java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/array2.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1cc990c [2018-09-30 20:39:31,665 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-30 20:39:31,667 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-30 20:39:31,680 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-09-30 20:39:31,712 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf [2018-09-30 20:39:31,727 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-30 20:39:31,728 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-30 20:39:31,729 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-30 20:39:31,729 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-30 20:39:31,730 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-30 20:39:31,730 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-30 20:39:31,730 INFO L133 SettingsManager]: * Use SBE=true [2018-09-30 20:39:31,730 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-30 20:39:31,730 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-30 20:39:31,731 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-30 20:39:31,731 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-30 20:39:31,731 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-30 20:39:31,731 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-30 20:39:31,731 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-30 20:39:31,731 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-30 20:39:31,732 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-30 20:39:31,732 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-30 20:39:31,732 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-30 20:39:31,732 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-30 20:39:31,733 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-30 20:39:31,733 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-30 20:39:31,733 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-30 20:39:31,733 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-30 20:39:31,733 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-30 20:39:31,734 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-30 20:39:31,734 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-30 20:39:31,734 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-30 20:39:31,734 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-30 20:39:31,734 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-30 20:39:31,735 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-30 20:39:31,735 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-09-30 20:39:31,793 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-30 20:39:31,811 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-30 20:39:31,817 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-30 20:39:31,819 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-30 20:39:31,820 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-30 20:39:31,820 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/array2.i_3.bpl [2018-09-30 20:39:31,821 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/array2.i_3.bpl' [2018-09-30 20:39:31,882 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-30 20:39:31,886 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-30 20:39:31,886 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-30 20:39:31,887 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-30 20:39:31,887 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-30 20:39:31,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "array2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:39:31" (1/1) ... [2018-09-30 20:39:31,921 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "array2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:39:31" (1/1) ... [2018-09-30 20:39:31,928 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-30 20:39:31,929 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-30 20:39:31,929 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-30 20:39:31,929 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-30 20:39:31,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "array2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:39:31" (1/1) ... [2018-09-30 20:39:31,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "array2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:39:31" (1/1) ... [2018-09-30 20:39:31,941 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "array2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:39:31" (1/1) ... [2018-09-30 20:39:31,941 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "array2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:39:31" (1/1) ... [2018-09-30 20:39:31,944 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "array2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:39:31" (1/1) ... [2018-09-30 20:39:31,946 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "array2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:39:31" (1/1) ... [2018-09-30 20:39:31,947 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "array2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:39:31" (1/1) ... [2018-09-30 20:39:31,948 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-30 20:39:31,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-30 20:39:31,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-30 20:39:31,949 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-30 20:39:31,950 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "array2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:39:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-30 20:39:32,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-30 20:39:32,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-30 20:39:32,236 INFO L348 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-30 20:39:32,236 INFO L202 PluginConnector]: Adding new model array2.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 08:39:32 BoogieIcfgContainer [2018-09-30 20:39:32,237 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-30 20:39:32,238 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-30 20:39:32,238 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-30 20:39:32,241 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-30 20:39:32,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "array2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:39:31" (1/2) ... [2018-09-30 20:39:32,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ae0b695 and model type array2.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.09 08:39:32, skipping insertion in model container [2018-09-30 20:39:32,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "array2.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 08:39:32" (2/2) ... [2018-09-30 20:39:32,245 INFO L112 eAbstractionObserver]: Analyzing ICFG array2.i_3.bpl [2018-09-30 20:39:32,255 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-30 20:39:32,264 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-30 20:39:32,319 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-30 20:39:32,320 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-30 20:39:32,320 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-30 20:39:32,321 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-30 20:39:32,321 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-30 20:39:32,321 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-30 20:39:32,321 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-30 20:39:32,321 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-30 20:39:32,322 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-30 20:39:32,338 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2018-09-30 20:39:32,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-09-30 20:39:32,346 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:32,347 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-09-30 20:39:32,348 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:32,355 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:32,356 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, now seen corresponding path program 1 times [2018-09-30 20:39:32,358 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:32,359 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:32,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:32,418 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:39:32,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:32,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:32,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:32,539 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-30 20:39:32,540 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-30 20:39:32,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-30 20:39:32,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-30 20:39:32,558 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:32,560 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2018-09-30 20:39:32,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:32,701 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-09-30 20:39:32,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-30 20:39:32,703 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-09-30 20:39:32,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:32,731 INFO L225 Difference]: With dead ends: 11 [2018-09-30 20:39:32,732 INFO L226 Difference]: Without dead ends: 7 [2018-09-30 20:39:32,736 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 20:39:32,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-09-30 20:39:32,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-09-30 20:39:32,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-09-30 20:39:32,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-09-30 20:39:32,772 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-09-30 20:39:32,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:32,772 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-09-30 20:39:32,772 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-30 20:39:32,772 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-09-30 20:39:32,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-09-30 20:39:32,773 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:32,773 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-09-30 20:39:32,773 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:32,773 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:32,773 INFO L82 PathProgramCache]: Analyzing trace with hash 889591169, now seen corresponding path program 1 times [2018-09-30 20:39:32,774 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:32,774 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:32,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:32,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:39:32,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:32,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:32,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:32,863 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:32,863 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:32,872 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:39:32,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:32,893 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:33,066 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:33,100 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:33,100 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-09-30 20:39:33,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-30 20:39:33,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-30 20:39:33,102 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:33,102 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 4 states. [2018-09-30 20:39:33,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:33,247 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-09-30 20:39:33,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-30 20:39:33,248 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-09-30 20:39:33,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:33,248 INFO L225 Difference]: With dead ends: 11 [2018-09-30 20:39:33,249 INFO L226 Difference]: Without dead ends: 9 [2018-09-30 20:39:33,250 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-09-30 20:39:33,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-09-30 20:39:33,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-09-30 20:39:33,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-09-30 20:39:33,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-09-30 20:39:33,254 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2018-09-30 20:39:33,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:33,254 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-09-30 20:39:33,254 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-30 20:39:33,254 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-09-30 20:39:33,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-09-30 20:39:33,255 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:33,255 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2018-09-30 20:39:33,255 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:33,256 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:33,256 INFO L82 PathProgramCache]: Analyzing trace with hash 198673595, now seen corresponding path program 2 times [2018-09-30 20:39:33,256 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:33,256 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:33,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:33,257 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:39:33,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:33,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:33,342 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:33,343 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:33,343 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:33,359 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:39:33,383 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:39:33,383 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:33,386 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:33,462 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:33,487 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:33,488 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-09-30 20:39:33,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-30 20:39:33,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-30 20:39:33,488 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:33,489 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-09-30 20:39:33,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:33,679 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-09-30 20:39:33,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-30 20:39:33,681 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2018-09-30 20:39:33,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:33,682 INFO L225 Difference]: With dead ends: 13 [2018-09-30 20:39:33,682 INFO L226 Difference]: Without dead ends: 11 [2018-09-30 20:39:33,682 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-09-30 20:39:33,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-09-30 20:39:33,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-09-30 20:39:33,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-09-30 20:39:33,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-09-30 20:39:33,688 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-09-30 20:39:33,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:33,688 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-09-30 20:39:33,690 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-30 20:39:33,690 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-09-30 20:39:33,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-30 20:39:33,691 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:33,691 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1] [2018-09-30 20:39:33,692 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:33,693 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:33,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1946815861, now seen corresponding path program 3 times [2018-09-30 20:39:33,695 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:33,696 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:33,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:33,697 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:33,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:33,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:33,858 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:33,859 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:33,859 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:33,871 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:39:33,893 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-09-30 20:39:33,894 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:33,895 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:33,988 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:34,012 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:34,012 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-09-30 20:39:34,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-30 20:39:34,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-30 20:39:34,013 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:34,014 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 6 states. [2018-09-30 20:39:34,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:34,179 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-09-30 20:39:34,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-30 20:39:34,180 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2018-09-30 20:39:34,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:34,180 INFO L225 Difference]: With dead ends: 15 [2018-09-30 20:39:34,180 INFO L226 Difference]: Without dead ends: 13 [2018-09-30 20:39:34,181 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-09-30 20:39:34,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-09-30 20:39:34,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-09-30 20:39:34,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-09-30 20:39:34,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-09-30 20:39:34,185 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-09-30 20:39:34,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:34,185 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-09-30 20:39:34,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-30 20:39:34,186 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-09-30 20:39:34,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-09-30 20:39:34,186 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:34,186 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1] [2018-09-30 20:39:34,187 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:34,187 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:34,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1715646545, now seen corresponding path program 4 times [2018-09-30 20:39:34,187 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:34,187 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:34,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:34,189 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:34,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:34,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:34,290 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:34,290 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:34,291 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:34,301 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:39:34,327 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:39:34,328 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:34,329 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:34,406 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:34,432 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:34,432 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-09-30 20:39:34,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-30 20:39:34,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-30 20:39:34,433 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:34,433 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 7 states. [2018-09-30 20:39:34,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:34,490 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-09-30 20:39:34,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-30 20:39:34,491 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2018-09-30 20:39:34,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:34,492 INFO L225 Difference]: With dead ends: 17 [2018-09-30 20:39:34,493 INFO L226 Difference]: Without dead ends: 15 [2018-09-30 20:39:34,493 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-09-30 20:39:34,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-09-30 20:39:34,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-09-30 20:39:34,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-09-30 20:39:34,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-09-30 20:39:34,498 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-09-30 20:39:34,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:34,498 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-09-30 20:39:34,498 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-30 20:39:34,498 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-09-30 20:39:34,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-30 20:39:34,499 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:34,499 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1] [2018-09-30 20:39:34,499 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:34,500 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:34,500 INFO L82 PathProgramCache]: Analyzing trace with hash 531164009, now seen corresponding path program 5 times [2018-09-30 20:39:34,500 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:34,500 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:34,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:34,502 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:34,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:34,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:34,629 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:34,629 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:34,630 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:34,638 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:39:34,676 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-09-30 20:39:34,676 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:34,679 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:35,075 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:35,109 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:35,110 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-09-30 20:39:35,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-30 20:39:35,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-30 20:39:35,111 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:35,111 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 8 states. [2018-09-30 20:39:35,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:35,281 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-09-30 20:39:35,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-30 20:39:35,283 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-09-30 20:39:35,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:35,284 INFO L225 Difference]: With dead ends: 19 [2018-09-30 20:39:35,284 INFO L226 Difference]: Without dead ends: 17 [2018-09-30 20:39:35,284 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-09-30 20:39:35,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-09-30 20:39:35,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-09-30 20:39:35,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-09-30 20:39:35,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-09-30 20:39:35,288 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2018-09-30 20:39:35,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:35,289 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-09-30 20:39:35,289 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-30 20:39:35,289 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-09-30 20:39:35,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-09-30 20:39:35,290 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:35,290 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1] [2018-09-30 20:39:35,290 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:35,290 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:35,290 INFO L82 PathProgramCache]: Analyzing trace with hash -652443485, now seen corresponding path program 6 times [2018-09-30 20:39:35,291 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:35,291 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:35,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:35,292 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:35,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:35,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:35,389 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:35,389 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:35,389 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:35,412 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:39:35,429 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-09-30 20:39:35,429 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:35,431 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:35,501 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:35,522 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:35,522 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-09-30 20:39:35,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-30 20:39:35,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-30 20:39:35,523 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:35,523 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 9 states. [2018-09-30 20:39:35,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:35,623 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-09-30 20:39:35,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-30 20:39:35,624 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-09-30 20:39:35,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:35,624 INFO L225 Difference]: With dead ends: 21 [2018-09-30 20:39:35,625 INFO L226 Difference]: Without dead ends: 19 [2018-09-30 20:39:35,625 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-09-30 20:39:35,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-09-30 20:39:35,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-09-30 20:39:35,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-09-30 20:39:35,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-09-30 20:39:35,629 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2018-09-30 20:39:35,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:35,629 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-09-30 20:39:35,630 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-30 20:39:35,630 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-09-30 20:39:35,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-30 20:39:35,630 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:35,631 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1] [2018-09-30 20:39:35,631 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:35,631 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:35,631 INFO L82 PathProgramCache]: Analyzing trace with hash 67088221, now seen corresponding path program 7 times [2018-09-30 20:39:35,631 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:35,631 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:35,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:35,633 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:35,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:35,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:35,727 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:35,728 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:35,728 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:35,736 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:39:35,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:35,769 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:35,890 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:35,911 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:35,912 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-09-30 20:39:35,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-30 20:39:35,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-30 20:39:35,913 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:35,913 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 10 states. [2018-09-30 20:39:36,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:36,006 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-09-30 20:39:36,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-30 20:39:36,007 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2018-09-30 20:39:36,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:36,008 INFO L225 Difference]: With dead ends: 23 [2018-09-30 20:39:36,008 INFO L226 Difference]: Without dead ends: 21 [2018-09-30 20:39:36,008 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-09-30 20:39:36,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-09-30 20:39:36,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-09-30 20:39:36,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-09-30 20:39:36,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-09-30 20:39:36,014 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2018-09-30 20:39:36,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:36,015 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-09-30 20:39:36,015 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-30 20:39:36,015 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-09-30 20:39:36,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-09-30 20:39:36,016 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:36,016 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1] [2018-09-30 20:39:36,016 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:36,016 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:36,016 INFO L82 PathProgramCache]: Analyzing trace with hash 47323031, now seen corresponding path program 8 times [2018-09-30 20:39:36,017 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:36,017 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:36,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:36,018 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:39:36,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:36,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:36,154 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:36,155 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:36,155 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:36,170 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:39:36,197 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:39:36,198 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:36,199 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:36,407 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:36,431 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:36,432 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-09-30 20:39:36,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-30 20:39:36,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-30 20:39:36,433 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:36,433 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 11 states. [2018-09-30 20:39:36,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:36,575 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-09-30 20:39:36,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-30 20:39:36,579 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2018-09-30 20:39:36,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:36,580 INFO L225 Difference]: With dead ends: 25 [2018-09-30 20:39:36,580 INFO L226 Difference]: Without dead ends: 23 [2018-09-30 20:39:36,580 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-09-30 20:39:36,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-09-30 20:39:36,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-09-30 20:39:36,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-09-30 20:39:36,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-09-30 20:39:36,587 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 20 [2018-09-30 20:39:36,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:36,587 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-09-30 20:39:36,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-30 20:39:36,587 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-09-30 20:39:36,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-09-30 20:39:36,588 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:36,588 INFO L375 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1] [2018-09-30 20:39:36,588 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:36,588 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:36,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1767155375, now seen corresponding path program 9 times [2018-09-30 20:39:36,589 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:36,589 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:36,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:36,590 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:36,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:36,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:36,731 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:36,732 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:36,732 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:36,744 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:39:36,766 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-09-30 20:39:36,766 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:36,769 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:36,827 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:36,849 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:36,849 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-09-30 20:39:36,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-30 20:39:36,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-30 20:39:36,850 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:36,850 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 12 states. [2018-09-30 20:39:36,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:36,939 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-09-30 20:39:36,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-30 20:39:36,942 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2018-09-30 20:39:36,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:36,943 INFO L225 Difference]: With dead ends: 27 [2018-09-30 20:39:36,944 INFO L226 Difference]: Without dead ends: 25 [2018-09-30 20:39:36,944 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-09-30 20:39:36,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-09-30 20:39:36,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-09-30 20:39:36,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-09-30 20:39:36,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-09-30 20:39:36,949 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2018-09-30 20:39:36,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:36,950 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-09-30 20:39:36,950 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-30 20:39:36,950 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-09-30 20:39:36,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-09-30 20:39:36,951 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:36,951 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1] [2018-09-30 20:39:36,951 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:36,951 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:36,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1724181365, now seen corresponding path program 10 times [2018-09-30 20:39:36,951 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:36,952 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:36,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:36,953 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:36,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:36,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:37,093 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:37,094 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:37,094 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:37,101 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:39:37,119 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:39:37,119 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:37,121 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:37,215 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:37,236 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:37,236 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-09-30 20:39:37,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-30 20:39:37,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-30 20:39:37,237 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:37,237 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 13 states. [2018-09-30 20:39:37,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:37,327 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-09-30 20:39:37,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-30 20:39:37,327 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 24 [2018-09-30 20:39:37,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:37,328 INFO L225 Difference]: With dead ends: 29 [2018-09-30 20:39:37,328 INFO L226 Difference]: Without dead ends: 27 [2018-09-30 20:39:37,328 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-09-30 20:39:37,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-09-30 20:39:37,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-09-30 20:39:37,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-09-30 20:39:37,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-09-30 20:39:37,333 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 24 [2018-09-30 20:39:37,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:37,333 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-09-30 20:39:37,333 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-30 20:39:37,333 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-09-30 20:39:37,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-09-30 20:39:37,334 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:37,334 INFO L375 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1] [2018-09-30 20:39:37,335 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:37,335 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:37,335 INFO L82 PathProgramCache]: Analyzing trace with hash 919136581, now seen corresponding path program 11 times [2018-09-30 20:39:37,335 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:37,335 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:37,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:37,336 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:37,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:37,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:37,442 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:37,442 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:37,442 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:37,451 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:39:37,481 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-09-30 20:39:37,482 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:37,485 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:37,560 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:37,590 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:37,590 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-09-30 20:39:37,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-30 20:39:37,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-30 20:39:37,591 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:37,591 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 14 states. [2018-09-30 20:39:37,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:37,835 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-09-30 20:39:37,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-30 20:39:37,837 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 26 [2018-09-30 20:39:37,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:37,837 INFO L225 Difference]: With dead ends: 31 [2018-09-30 20:39:37,838 INFO L226 Difference]: Without dead ends: 29 [2018-09-30 20:39:37,838 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-09-30 20:39:37,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-09-30 20:39:37,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-09-30 20:39:37,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-09-30 20:39:37,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-09-30 20:39:37,843 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 26 [2018-09-30 20:39:37,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:37,843 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-09-30 20:39:37,843 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-30 20:39:37,844 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-09-30 20:39:37,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-09-30 20:39:37,844 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:37,844 INFO L375 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1] [2018-09-30 20:39:37,845 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:37,845 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:37,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1472956545, now seen corresponding path program 12 times [2018-09-30 20:39:37,845 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:37,845 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:37,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:37,846 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:37,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:37,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:37,963 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:37,963 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:37,963 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:37,971 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:39:38,159 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-09-30 20:39:38,160 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:38,162 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:38,471 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:38,492 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:38,492 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-09-30 20:39:38,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-30 20:39:38,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-30 20:39:38,493 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:38,493 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 15 states. [2018-09-30 20:39:38,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:38,615 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-09-30 20:39:38,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-30 20:39:38,617 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 28 [2018-09-30 20:39:38,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:38,618 INFO L225 Difference]: With dead ends: 33 [2018-09-30 20:39:38,618 INFO L226 Difference]: Without dead ends: 31 [2018-09-30 20:39:38,619 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-09-30 20:39:38,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-09-30 20:39:38,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-09-30 20:39:38,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-09-30 20:39:38,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-09-30 20:39:38,625 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 28 [2018-09-30 20:39:38,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:38,625 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-09-30 20:39:38,625 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-30 20:39:38,625 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-09-30 20:39:38,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-09-30 20:39:38,626 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:38,626 INFO L375 BasicCegarLoop]: trace histogram [14, 13, 1, 1, 1] [2018-09-30 20:39:38,627 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:38,627 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:38,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1828020025, now seen corresponding path program 13 times [2018-09-30 20:39:38,627 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:38,627 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:38,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:38,628 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:38,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:38,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:38,755 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:38,756 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:38,756 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:38,786 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:39:38,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:38,807 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:38,951 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:38,972 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:38,972 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-09-30 20:39:38,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-30 20:39:38,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-30 20:39:38,973 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:38,973 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 16 states. [2018-09-30 20:39:39,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:39,194 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-09-30 20:39:39,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-30 20:39:39,195 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 30 [2018-09-30 20:39:39,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:39,195 INFO L225 Difference]: With dead ends: 35 [2018-09-30 20:39:39,196 INFO L226 Difference]: Without dead ends: 33 [2018-09-30 20:39:39,196 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-09-30 20:39:39,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-09-30 20:39:39,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-09-30 20:39:39,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-09-30 20:39:39,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-09-30 20:39:39,201 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 30 [2018-09-30 20:39:39,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:39,201 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-09-30 20:39:39,201 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-30 20:39:39,201 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-09-30 20:39:39,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-09-30 20:39:39,202 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:39,202 INFO L375 BasicCegarLoop]: trace histogram [15, 14, 1, 1, 1] [2018-09-30 20:39:39,203 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:39,203 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:39,203 INFO L82 PathProgramCache]: Analyzing trace with hash 85672051, now seen corresponding path program 14 times [2018-09-30 20:39:39,203 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:39,203 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:39,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:39,204 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:39:39,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:39,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:39,377 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:39,377 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:39,378 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:39,390 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:39:39,444 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:39:39,445 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:39,447 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:39,603 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:39,625 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:39,625 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-09-30 20:39:39,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-30 20:39:39,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-30 20:39:39,626 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:39,626 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 17 states. [2018-09-30 20:39:39,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:39,759 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-09-30 20:39:39,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-30 20:39:39,759 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 32 [2018-09-30 20:39:39,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:39,760 INFO L225 Difference]: With dead ends: 37 [2018-09-30 20:39:39,761 INFO L226 Difference]: Without dead ends: 35 [2018-09-30 20:39:39,761 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-09-30 20:39:39,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-09-30 20:39:39,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-09-30 20:39:39,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-09-30 20:39:39,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-09-30 20:39:39,766 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 32 [2018-09-30 20:39:39,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:39,766 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-09-30 20:39:39,766 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-30 20:39:39,767 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-09-30 20:39:39,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-09-30 20:39:39,767 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:39,768 INFO L375 BasicCegarLoop]: trace histogram [16, 15, 1, 1, 1] [2018-09-30 20:39:39,768 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:39,768 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:39,768 INFO L82 PathProgramCache]: Analyzing trace with hash 726514477, now seen corresponding path program 15 times [2018-09-30 20:39:39,768 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:39,768 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:39,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:39,769 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:39,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:39,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:39,999 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:39,999 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:40,000 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:40,017 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:39:40,122 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-09-30 20:39:40,122 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:40,125 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:40,284 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:40,304 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:40,304 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-09-30 20:39:40,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-09-30 20:39:40,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-09-30 20:39:40,305 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:40,305 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 18 states. [2018-09-30 20:39:40,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:40,593 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-09-30 20:39:40,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-30 20:39:40,594 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 34 [2018-09-30 20:39:40,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:40,595 INFO L225 Difference]: With dead ends: 39 [2018-09-30 20:39:40,595 INFO L226 Difference]: Without dead ends: 37 [2018-09-30 20:39:40,596 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-09-30 20:39:40,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-09-30 20:39:40,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-09-30 20:39:40,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-09-30 20:39:40,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-09-30 20:39:40,600 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 34 [2018-09-30 20:39:40,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:40,601 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-09-30 20:39:40,601 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-09-30 20:39:40,601 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-09-30 20:39:40,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-09-30 20:39:40,602 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:40,602 INFO L375 BasicCegarLoop]: trace histogram [17, 16, 1, 1, 1] [2018-09-30 20:39:40,602 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:40,602 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:40,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1899204761, now seen corresponding path program 16 times [2018-09-30 20:39:40,602 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:40,602 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:40,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:40,603 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:40,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:40,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:40,860 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:40,860 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:40,860 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:40,868 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:39:40,900 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:39:40,901 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:40,906 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:41,043 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:41,065 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:41,065 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-09-30 20:39:41,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-09-30 20:39:41,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-09-30 20:39:41,066 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:41,066 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 19 states. [2018-09-30 20:39:41,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:41,258 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-09-30 20:39:41,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-09-30 20:39:41,259 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 36 [2018-09-30 20:39:41,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:41,259 INFO L225 Difference]: With dead ends: 41 [2018-09-30 20:39:41,259 INFO L226 Difference]: Without dead ends: 39 [2018-09-30 20:39:41,260 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-09-30 20:39:41,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-09-30 20:39:41,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-09-30 20:39:41,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-09-30 20:39:41,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-09-30 20:39:41,265 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 36 [2018-09-30 20:39:41,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:41,265 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-09-30 20:39:41,265 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-09-30 20:39:41,265 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-09-30 20:39:41,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-30 20:39:41,266 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:41,266 INFO L375 BasicCegarLoop]: trace histogram [18, 17, 1, 1, 1] [2018-09-30 20:39:41,267 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:41,267 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:41,267 INFO L82 PathProgramCache]: Analyzing trace with hash 225377569, now seen corresponding path program 17 times [2018-09-30 20:39:41,267 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:41,267 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:41,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:41,268 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:41,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:41,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:41,543 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:41,544 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:41,544 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:41,555 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:39:41,609 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-09-30 20:39:41,609 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:41,612 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:41,886 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:41,908 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:41,908 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-09-30 20:39:41,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-09-30 20:39:41,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-09-30 20:39:41,909 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:41,909 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 20 states. [2018-09-30 20:39:42,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:42,052 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-09-30 20:39:42,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-30 20:39:42,053 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 38 [2018-09-30 20:39:42,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:42,054 INFO L225 Difference]: With dead ends: 43 [2018-09-30 20:39:42,054 INFO L226 Difference]: Without dead ends: 41 [2018-09-30 20:39:42,054 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-09-30 20:39:42,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-09-30 20:39:42,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-09-30 20:39:42,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-09-30 20:39:42,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-09-30 20:39:42,059 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 38 [2018-09-30 20:39:42,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:42,059 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-09-30 20:39:42,060 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-09-30 20:39:42,060 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-09-30 20:39:42,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-09-30 20:39:42,060 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:42,061 INFO L375 BasicCegarLoop]: trace histogram [19, 18, 1, 1, 1] [2018-09-30 20:39:42,061 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:42,061 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:42,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1839531099, now seen corresponding path program 18 times [2018-09-30 20:39:42,061 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:42,062 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:42,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:42,063 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:42,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:42,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:42,189 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:42,190 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:42,190 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:42,197 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:39:42,243 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-09-30 20:39:42,243 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:42,246 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:42,644 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:42,682 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:42,682 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-09-30 20:39:42,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-09-30 20:39:42,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-09-30 20:39:42,683 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:42,683 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 21 states. [2018-09-30 20:39:43,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:43,054 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-09-30 20:39:43,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-09-30 20:39:43,055 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 40 [2018-09-30 20:39:43,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:43,055 INFO L225 Difference]: With dead ends: 45 [2018-09-30 20:39:43,056 INFO L226 Difference]: Without dead ends: 43 [2018-09-30 20:39:43,056 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-09-30 20:39:43,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-09-30 20:39:43,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-09-30 20:39:43,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-09-30 20:39:43,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-09-30 20:39:43,061 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 40 [2018-09-30 20:39:43,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:43,061 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-09-30 20:39:43,061 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-09-30 20:39:43,061 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-09-30 20:39:43,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-09-30 20:39:43,062 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:43,062 INFO L375 BasicCegarLoop]: trace histogram [20, 19, 1, 1, 1] [2018-09-30 20:39:43,062 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:43,062 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:43,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1737087723, now seen corresponding path program 19 times [2018-09-30 20:39:43,062 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:43,063 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:43,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:43,063 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:43,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:43,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:43,921 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:43,922 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:43,922 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:43,931 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:39:43,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:43,957 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:44,071 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:44,092 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:44,092 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-09-30 20:39:44,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-09-30 20:39:44,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-09-30 20:39:44,093 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:44,093 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 22 states. [2018-09-30 20:39:44,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:44,340 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-09-30 20:39:44,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-09-30 20:39:44,340 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 42 [2018-09-30 20:39:44,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:44,340 INFO L225 Difference]: With dead ends: 47 [2018-09-30 20:39:44,341 INFO L226 Difference]: Without dead ends: 45 [2018-09-30 20:39:44,341 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-09-30 20:39:44,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-09-30 20:39:44,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-09-30 20:39:44,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-09-30 20:39:44,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-09-30 20:39:44,346 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 42 [2018-09-30 20:39:44,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:44,346 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-09-30 20:39:44,346 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-09-30 20:39:44,346 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-09-30 20:39:44,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-09-30 20:39:44,347 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:44,347 INFO L375 BasicCegarLoop]: trace histogram [21, 20, 1, 1, 1] [2018-09-30 20:39:44,348 INFO L423 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:44,348 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:44,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1401028431, now seen corresponding path program 20 times [2018-09-30 20:39:44,348 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:44,348 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:44,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:44,349 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:39:44,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:44,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:44,645 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:44,646 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:44,647 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:44,657 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:39:44,680 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:39:44,680 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:44,682 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:44,792 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:44,813 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:44,813 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-09-30 20:39:44,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-09-30 20:39:44,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-09-30 20:39:44,814 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:44,814 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 23 states. [2018-09-30 20:39:44,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:44,941 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-09-30 20:39:44,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-09-30 20:39:44,942 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 44 [2018-09-30 20:39:44,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:44,942 INFO L225 Difference]: With dead ends: 49 [2018-09-30 20:39:44,942 INFO L226 Difference]: Without dead ends: 47 [2018-09-30 20:39:44,943 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-09-30 20:39:44,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-09-30 20:39:44,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-09-30 20:39:44,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-09-30 20:39:44,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-09-30 20:39:44,948 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 44 [2018-09-30 20:39:44,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:44,948 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-09-30 20:39:44,949 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-09-30 20:39:44,949 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-09-30 20:39:44,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-09-30 20:39:44,949 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:44,949 INFO L375 BasicCegarLoop]: trace histogram [22, 21, 1, 1, 1] [2018-09-30 20:39:44,950 INFO L423 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:44,950 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:44,950 INFO L82 PathProgramCache]: Analyzing trace with hash 2063610633, now seen corresponding path program 21 times [2018-09-30 20:39:44,950 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:44,950 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:44,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:44,951 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:44,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:44,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:45,127 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:45,128 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:45,128 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:45,136 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:39:45,190 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-09-30 20:39:45,190 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:45,194 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:45,320 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:45,342 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:45,342 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-09-30 20:39:45,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-09-30 20:39:45,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-09-30 20:39:45,343 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:45,343 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 24 states. [2018-09-30 20:39:45,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:45,545 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-09-30 20:39:45,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-09-30 20:39:45,546 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 46 [2018-09-30 20:39:45,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:45,547 INFO L225 Difference]: With dead ends: 51 [2018-09-30 20:39:45,547 INFO L226 Difference]: Without dead ends: 49 [2018-09-30 20:39:45,548 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-09-30 20:39:45,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-09-30 20:39:45,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-09-30 20:39:45,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-09-30 20:39:45,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-09-30 20:39:45,553 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 46 [2018-09-30 20:39:45,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:45,554 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-09-30 20:39:45,554 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-09-30 20:39:45,554 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-09-30 20:39:45,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-09-30 20:39:45,555 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:45,555 INFO L375 BasicCegarLoop]: trace histogram [23, 22, 1, 1, 1] [2018-09-30 20:39:45,555 INFO L423 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:45,555 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:45,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1145020349, now seen corresponding path program 22 times [2018-09-30 20:39:45,556 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:45,556 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:45,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:45,557 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:45,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:45,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:45,802 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:45,802 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:45,802 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:45,810 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:39:45,837 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:39:45,837 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:45,840 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:45,978 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:45,999 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:45,999 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-09-30 20:39:46,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-09-30 20:39:46,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-09-30 20:39:46,000 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:46,000 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 25 states. [2018-09-30 20:39:46,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:46,128 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-09-30 20:39:46,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-09-30 20:39:46,128 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 48 [2018-09-30 20:39:46,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:46,129 INFO L225 Difference]: With dead ends: 53 [2018-09-30 20:39:46,129 INFO L226 Difference]: Without dead ends: 51 [2018-09-30 20:39:46,129 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-09-30 20:39:46,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-30 20:39:46,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-09-30 20:39:46,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-09-30 20:39:46,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-09-30 20:39:46,134 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 48 [2018-09-30 20:39:46,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:46,134 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-09-30 20:39:46,134 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-09-30 20:39:46,134 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-09-30 20:39:46,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-09-30 20:39:46,135 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:46,135 INFO L375 BasicCegarLoop]: trace histogram [24, 23, 1, 1, 1] [2018-09-30 20:39:46,135 INFO L423 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:46,135 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:46,135 INFO L82 PathProgramCache]: Analyzing trace with hash -852875523, now seen corresponding path program 23 times [2018-09-30 20:39:46,135 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:46,136 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:46,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:46,137 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:46,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:46,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:46,665 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:46,665 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:46,666 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:46,677 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:39:46,774 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-09-30 20:39:46,774 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:46,776 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:46,923 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:46,943 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:46,944 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-09-30 20:39:46,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-09-30 20:39:46,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-09-30 20:39:46,944 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:46,944 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 26 states. [2018-09-30 20:39:47,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:47,038 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-09-30 20:39:47,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-09-30 20:39:47,038 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 50 [2018-09-30 20:39:47,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:47,039 INFO L225 Difference]: With dead ends: 55 [2018-09-30 20:39:47,039 INFO L226 Difference]: Without dead ends: 53 [2018-09-30 20:39:47,040 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-09-30 20:39:47,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-09-30 20:39:47,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-09-30 20:39:47,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-09-30 20:39:47,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-09-30 20:39:47,044 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 50 [2018-09-30 20:39:47,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:47,044 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-09-30 20:39:47,044 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-09-30 20:39:47,044 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-09-30 20:39:47,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-09-30 20:39:47,045 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:47,045 INFO L375 BasicCegarLoop]: trace histogram [25, 24, 1, 1, 1] [2018-09-30 20:39:47,045 INFO L423 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:47,046 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:47,046 INFO L82 PathProgramCache]: Analyzing trace with hash 725428023, now seen corresponding path program 24 times [2018-09-30 20:39:47,046 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:47,046 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:47,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:47,047 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:47,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:47,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:47,329 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:47,330 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:47,330 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:47,337 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:39:47,410 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-09-30 20:39:47,410 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:47,412 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:47,545 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:47,566 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:47,566 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-09-30 20:39:47,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-09-30 20:39:47,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-09-30 20:39:47,567 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:47,567 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 27 states. [2018-09-30 20:39:47,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:47,698 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-09-30 20:39:47,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-09-30 20:39:47,698 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 52 [2018-09-30 20:39:47,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:47,699 INFO L225 Difference]: With dead ends: 57 [2018-09-30 20:39:47,699 INFO L226 Difference]: Without dead ends: 55 [2018-09-30 20:39:47,700 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-09-30 20:39:47,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-09-30 20:39:47,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-09-30 20:39:47,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-09-30 20:39:47,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-09-30 20:39:47,704 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 52 [2018-09-30 20:39:47,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:47,704 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-09-30 20:39:47,704 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-09-30 20:39:47,704 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-09-30 20:39:47,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-09-30 20:39:47,705 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:47,705 INFO L375 BasicCegarLoop]: trace histogram [26, 25, 1, 1, 1] [2018-09-30 20:39:47,705 INFO L423 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:47,706 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:47,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1351680241, now seen corresponding path program 25 times [2018-09-30 20:39:47,706 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:47,706 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:47,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:47,707 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:47,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:47,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:47,962 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:47,962 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:47,962 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:47,970 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:39:47,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:47,998 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:48,087 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:48,106 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:48,106 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-09-30 20:39:48,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-09-30 20:39:48,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-09-30 20:39:48,107 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:48,107 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 28 states. [2018-09-30 20:39:48,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:48,266 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-09-30 20:39:48,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-09-30 20:39:48,266 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 54 [2018-09-30 20:39:48,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:48,267 INFO L225 Difference]: With dead ends: 59 [2018-09-30 20:39:48,267 INFO L226 Difference]: Without dead ends: 57 [2018-09-30 20:39:48,268 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-09-30 20:39:48,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-09-30 20:39:48,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-09-30 20:39:48,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-09-30 20:39:48,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-09-30 20:39:48,271 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 54 [2018-09-30 20:39:48,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:48,272 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-09-30 20:39:48,272 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-09-30 20:39:48,272 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-09-30 20:39:48,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-09-30 20:39:48,272 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:48,272 INFO L375 BasicCegarLoop]: trace histogram [27, 26, 1, 1, 1] [2018-09-30 20:39:48,272 INFO L423 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:48,272 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:48,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1884640299, now seen corresponding path program 26 times [2018-09-30 20:39:48,273 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:48,273 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:48,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:48,273 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:39:48,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:48,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:48,794 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:48,794 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:48,794 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:48,804 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:39:48,833 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:39:48,833 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:48,835 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:48,976 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:48,996 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:48,996 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-09-30 20:39:48,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-09-30 20:39:48,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-09-30 20:39:48,997 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:48,997 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 29 states. [2018-09-30 20:39:49,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:49,158 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-09-30 20:39:49,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-09-30 20:39:49,159 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 56 [2018-09-30 20:39:49,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:49,160 INFO L225 Difference]: With dead ends: 61 [2018-09-30 20:39:49,160 INFO L226 Difference]: Without dead ends: 59 [2018-09-30 20:39:49,160 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-09-30 20:39:49,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-09-30 20:39:49,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-09-30 20:39:49,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-09-30 20:39:49,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-09-30 20:39:49,164 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 56 [2018-09-30 20:39:49,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:49,164 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-09-30 20:39:49,164 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-09-30 20:39:49,164 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-09-30 20:39:49,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-09-30 20:39:49,165 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:49,165 INFO L375 BasicCegarLoop]: trace histogram [28, 27, 1, 1, 1] [2018-09-30 20:39:49,165 INFO L423 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:49,165 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:49,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1336819483, now seen corresponding path program 27 times [2018-09-30 20:39:49,166 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:49,166 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:49,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:49,167 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:49,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:49,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:49,590 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:49,591 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:49,591 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:49,598 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:39:49,692 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-09-30 20:39:49,692 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:49,694 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:49,813 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:49,835 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:49,835 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-09-30 20:39:49,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-09-30 20:39:49,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-09-30 20:39:49,835 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:49,836 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 30 states. [2018-09-30 20:39:50,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:50,026 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-09-30 20:39:50,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-09-30 20:39:50,026 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 58 [2018-09-30 20:39:50,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:50,027 INFO L225 Difference]: With dead ends: 63 [2018-09-30 20:39:50,027 INFO L226 Difference]: Without dead ends: 61 [2018-09-30 20:39:50,028 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-09-30 20:39:50,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-09-30 20:39:50,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-09-30 20:39:50,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-09-30 20:39:50,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-09-30 20:39:50,031 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 58 [2018-09-30 20:39:50,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:50,031 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-09-30 20:39:50,031 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-09-30 20:39:50,031 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-09-30 20:39:50,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-09-30 20:39:50,032 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:50,032 INFO L375 BasicCegarLoop]: trace histogram [29, 28, 1, 1, 1] [2018-09-30 20:39:50,032 INFO L423 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:50,033 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:50,033 INFO L82 PathProgramCache]: Analyzing trace with hash -488249569, now seen corresponding path program 28 times [2018-09-30 20:39:50,033 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:50,033 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:50,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:50,034 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:50,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:50,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:51,045 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:51,046 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:51,046 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:51,055 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:39:51,102 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:39:51,103 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:51,105 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:51,198 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:51,219 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:51,219 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-09-30 20:39:51,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-09-30 20:39:51,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-09-30 20:39:51,219 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:51,220 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 31 states. [2018-09-30 20:39:51,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:51,458 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-09-30 20:39:51,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-09-30 20:39:51,458 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 60 [2018-09-30 20:39:51,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:51,460 INFO L225 Difference]: With dead ends: 65 [2018-09-30 20:39:51,460 INFO L226 Difference]: Without dead ends: 63 [2018-09-30 20:39:51,461 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-09-30 20:39:51,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-30 20:39:51,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-09-30 20:39:51,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-30 20:39:51,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-09-30 20:39:51,463 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 60 [2018-09-30 20:39:51,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:51,464 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-09-30 20:39:51,464 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-09-30 20:39:51,464 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-09-30 20:39:51,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-09-30 20:39:51,464 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:51,464 INFO L375 BasicCegarLoop]: trace histogram [30, 29, 1, 1, 1] [2018-09-30 20:39:51,465 INFO L423 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:51,465 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:51,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1056348455, now seen corresponding path program 29 times [2018-09-30 20:39:51,465 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:51,465 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:51,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:51,466 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:51,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:51,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:51,742 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:51,742 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:51,742 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:51,749 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:39:51,933 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-09-30 20:39:51,933 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:51,937 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:52,076 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:52,100 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:52,101 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-09-30 20:39:52,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-09-30 20:39:52,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-09-30 20:39:52,102 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:52,102 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 32 states. [2018-09-30 20:39:52,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:52,256 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-09-30 20:39:52,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-09-30 20:39:52,257 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 62 [2018-09-30 20:39:52,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:52,258 INFO L225 Difference]: With dead ends: 67 [2018-09-30 20:39:52,258 INFO L226 Difference]: Without dead ends: 65 [2018-09-30 20:39:52,259 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-09-30 20:39:52,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-09-30 20:39:52,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-09-30 20:39:52,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-09-30 20:39:52,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-09-30 20:39:52,262 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 62 [2018-09-30 20:39:52,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:52,262 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-09-30 20:39:52,262 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-09-30 20:39:52,262 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-09-30 20:39:52,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-09-30 20:39:52,263 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:52,263 INFO L375 BasicCegarLoop]: trace histogram [31, 30, 1, 1, 1] [2018-09-30 20:39:52,263 INFO L423 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:52,263 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:52,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1538531309, now seen corresponding path program 30 times [2018-09-30 20:39:52,264 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:52,264 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:52,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:52,264 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:52,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:52,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:52,504 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:52,504 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:52,504 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:52,514 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:39:52,614 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-09-30 20:39:52,614 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:52,616 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:52,758 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:52,779 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:52,779 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-09-30 20:39:52,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-09-30 20:39:52,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-09-30 20:39:52,780 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:52,780 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 33 states. [2018-09-30 20:39:52,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:52,904 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-09-30 20:39:52,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-09-30 20:39:52,905 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 64 [2018-09-30 20:39:52,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:52,906 INFO L225 Difference]: With dead ends: 69 [2018-09-30 20:39:52,906 INFO L226 Difference]: Without dead ends: 67 [2018-09-30 20:39:52,906 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-09-30 20:39:52,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-09-30 20:39:52,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-09-30 20:39:52,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-09-30 20:39:52,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-09-30 20:39:52,909 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 64 [2018-09-30 20:39:52,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:52,910 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-09-30 20:39:52,910 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-09-30 20:39:52,910 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-09-30 20:39:52,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-09-30 20:39:52,910 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:52,910 INFO L375 BasicCegarLoop]: trace histogram [32, 31, 1, 1, 1] [2018-09-30 20:39:52,911 INFO L423 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:52,911 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:52,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1059786035, now seen corresponding path program 31 times [2018-09-30 20:39:52,911 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:52,911 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:52,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:52,912 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:52,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:52,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:53,132 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:53,133 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:53,133 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:53,140 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:39:53,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:53,172 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:53,411 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:53,431 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:53,431 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-09-30 20:39:53,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-09-30 20:39:53,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-09-30 20:39:53,432 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:53,432 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 34 states. [2018-09-30 20:39:53,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:53,570 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-09-30 20:39:53,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-09-30 20:39:53,571 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 66 [2018-09-30 20:39:53,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:53,571 INFO L225 Difference]: With dead ends: 71 [2018-09-30 20:39:53,572 INFO L226 Difference]: Without dead ends: 69 [2018-09-30 20:39:53,572 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-09-30 20:39:53,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-09-30 20:39:53,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-09-30 20:39:53,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-09-30 20:39:53,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-09-30 20:39:53,575 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 66 [2018-09-30 20:39:53,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:53,575 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-09-30 20:39:53,575 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-09-30 20:39:53,575 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-09-30 20:39:53,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-09-30 20:39:53,575 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:53,576 INFO L375 BasicCegarLoop]: trace histogram [33, 32, 1, 1, 1] [2018-09-30 20:39:53,576 INFO L423 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:53,576 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:53,576 INFO L82 PathProgramCache]: Analyzing trace with hash -547078393, now seen corresponding path program 32 times [2018-09-30 20:39:53,576 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:53,576 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:53,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:53,577 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:39:53,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:53,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:53,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:53,838 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:53,838 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:53,845 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:39:53,879 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:39:53,880 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:53,882 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:53,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:54,013 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:54,013 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-09-30 20:39:54,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-09-30 20:39:54,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-09-30 20:39:54,014 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:54,014 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 35 states. [2018-09-30 20:39:54,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:54,218 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-09-30 20:39:54,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-09-30 20:39:54,218 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 68 [2018-09-30 20:39:54,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:54,219 INFO L225 Difference]: With dead ends: 73 [2018-09-30 20:39:54,219 INFO L226 Difference]: Without dead ends: 71 [2018-09-30 20:39:54,219 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-09-30 20:39:54,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-09-30 20:39:54,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-09-30 20:39:54,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-09-30 20:39:54,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-09-30 20:39:54,222 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 68 [2018-09-30 20:39:54,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:54,222 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-09-30 20:39:54,223 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-09-30 20:39:54,223 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-09-30 20:39:54,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-09-30 20:39:54,223 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:54,223 INFO L375 BasicCegarLoop]: trace histogram [34, 33, 1, 1, 1] [2018-09-30 20:39:54,223 INFO L423 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:54,224 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:54,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1756273471, now seen corresponding path program 33 times [2018-09-30 20:39:54,224 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:54,224 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:54,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:54,225 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:54,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:54,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:54,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:54,755 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:54,755 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:54,762 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:39:54,897 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2018-09-30 20:39:54,897 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:54,900 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:55,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:55,057 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:55,058 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-09-30 20:39:55,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-09-30 20:39:55,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-09-30 20:39:55,058 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:55,058 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 36 states. [2018-09-30 20:39:55,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:55,238 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-09-30 20:39:55,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-09-30 20:39:55,238 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 70 [2018-09-30 20:39:55,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:55,239 INFO L225 Difference]: With dead ends: 75 [2018-09-30 20:39:55,240 INFO L226 Difference]: Without dead ends: 73 [2018-09-30 20:39:55,240 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-09-30 20:39:55,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-09-30 20:39:55,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-09-30 20:39:55,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-09-30 20:39:55,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-09-30 20:39:55,243 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 70 [2018-09-30 20:39:55,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:55,244 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-09-30 20:39:55,244 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-09-30 20:39:55,244 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-09-30 20:39:55,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-09-30 20:39:55,245 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:55,245 INFO L375 BasicCegarLoop]: trace histogram [35, 34, 1, 1, 1] [2018-09-30 20:39:55,245 INFO L423 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:55,245 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:55,245 INFO L82 PathProgramCache]: Analyzing trace with hash 143393787, now seen corresponding path program 34 times [2018-09-30 20:39:55,245 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:55,246 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:55,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:55,246 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:55,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:55,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:55,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:55,667 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:55,668 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:55,677 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:39:55,715 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:39:55,715 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:55,717 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:55,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:55,867 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:55,867 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-09-30 20:39:55,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-09-30 20:39:55,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-09-30 20:39:55,868 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:55,868 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 37 states. [2018-09-30 20:39:56,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:56,125 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-09-30 20:39:56,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-09-30 20:39:56,126 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 72 [2018-09-30 20:39:56,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:56,127 INFO L225 Difference]: With dead ends: 77 [2018-09-30 20:39:56,127 INFO L226 Difference]: Without dead ends: 75 [2018-09-30 20:39:56,127 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-09-30 20:39:56,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-09-30 20:39:56,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-09-30 20:39:56,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-09-30 20:39:56,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-09-30 20:39:56,131 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 72 [2018-09-30 20:39:56,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:56,132 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-09-30 20:39:56,132 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-09-30 20:39:56,132 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-09-30 20:39:56,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-09-30 20:39:56,132 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:56,133 INFO L375 BasicCegarLoop]: trace histogram [36, 35, 1, 1, 1] [2018-09-30 20:39:56,133 INFO L423 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:56,133 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:56,133 INFO L82 PathProgramCache]: Analyzing trace with hash 362527925, now seen corresponding path program 35 times [2018-09-30 20:39:56,133 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:56,133 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:56,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:56,134 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:56,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:56,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:56,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:56,848 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:56,848 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:56,855 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:39:57,171 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-09-30 20:39:57,171 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:57,174 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:57,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:57,328 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:57,328 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-09-30 20:39:57,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-09-30 20:39:57,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-09-30 20:39:57,329 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:57,329 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 38 states. [2018-09-30 20:39:57,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:57,532 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-09-30 20:39:57,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-09-30 20:39:57,533 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 74 [2018-09-30 20:39:57,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:57,534 INFO L225 Difference]: With dead ends: 79 [2018-09-30 20:39:57,534 INFO L226 Difference]: Without dead ends: 77 [2018-09-30 20:39:57,534 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-09-30 20:39:57,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-09-30 20:39:57,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-09-30 20:39:57,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-09-30 20:39:57,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-09-30 20:39:57,536 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 74 [2018-09-30 20:39:57,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:57,536 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-09-30 20:39:57,536 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-09-30 20:39:57,536 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-09-30 20:39:57,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-09-30 20:39:57,537 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:57,537 INFO L375 BasicCegarLoop]: trace histogram [37, 36, 1, 1, 1] [2018-09-30 20:39:57,538 INFO L423 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:57,538 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:57,538 INFO L82 PathProgramCache]: Analyzing trace with hash 497037039, now seen corresponding path program 36 times [2018-09-30 20:39:57,538 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:57,538 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:57,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:57,539 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:57,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:57,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:57,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:57,988 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:57,989 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:39:57,997 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:39:58,156 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-09-30 20:39:58,156 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:58,161 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:58,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:39:58,781 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:58,782 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-09-30 20:39:58,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-09-30 20:39:58,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-09-30 20:39:58,783 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:58,783 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 39 states. [2018-09-30 20:39:59,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:59,051 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-09-30 20:39:59,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-09-30 20:39:59,051 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 76 [2018-09-30 20:39:59,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:59,052 INFO L225 Difference]: With dead ends: 81 [2018-09-30 20:39:59,053 INFO L226 Difference]: Without dead ends: 79 [2018-09-30 20:39:59,053 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-09-30 20:39:59,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-09-30 20:39:59,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-09-30 20:39:59,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-09-30 20:39:59,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-09-30 20:39:59,057 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 76 [2018-09-30 20:39:59,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:59,058 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-09-30 20:39:59,058 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-09-30 20:39:59,058 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-09-30 20:39:59,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-09-30 20:39:59,058 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:59,059 INFO L375 BasicCegarLoop]: trace histogram [38, 37, 1, 1, 1] [2018-09-30 20:39:59,059 INFO L423 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:59,059 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:59,059 INFO L82 PathProgramCache]: Analyzing trace with hash 911276713, now seen corresponding path program 37 times [2018-09-30 20:39:59,059 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:59,059 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:59,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:59,060 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:59,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:59,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:00,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:00,276 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:00,276 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:00,283 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:40:00,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:00,324 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:00,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:00,509 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:00,510 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-09-30 20:40:00,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-09-30 20:40:00,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-09-30 20:40:00,510 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:00,511 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 40 states. [2018-09-30 20:40:00,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:00,787 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-09-30 20:40:00,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-09-30 20:40:00,788 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 78 [2018-09-30 20:40:00,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:00,789 INFO L225 Difference]: With dead ends: 83 [2018-09-30 20:40:00,789 INFO L226 Difference]: Without dead ends: 81 [2018-09-30 20:40:00,789 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-09-30 20:40:00,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-09-30 20:40:00,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-09-30 20:40:00,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-09-30 20:40:00,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-09-30 20:40:00,792 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 78 [2018-09-30 20:40:00,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:00,792 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-09-30 20:40:00,792 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-09-30 20:40:00,792 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-09-30 20:40:00,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-09-30 20:40:00,793 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:00,793 INFO L375 BasicCegarLoop]: trace histogram [39, 38, 1, 1, 1] [2018-09-30 20:40:00,793 INFO L423 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:00,793 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:00,793 INFO L82 PathProgramCache]: Analyzing trace with hash -436355101, now seen corresponding path program 38 times [2018-09-30 20:40:00,793 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:00,793 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:00,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:00,794 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:40:00,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:00,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:01,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:01,033 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:01,033 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:01,040 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:40:01,088 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:40:01,088 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:01,090 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:01,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:01,271 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:01,271 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-09-30 20:40:01,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-09-30 20:40:01,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-09-30 20:40:01,272 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:01,272 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 41 states. [2018-09-30 20:40:01,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:01,523 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-09-30 20:40:01,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-09-30 20:40:01,523 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 80 [2018-09-30 20:40:01,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:01,524 INFO L225 Difference]: With dead ends: 85 [2018-09-30 20:40:01,525 INFO L226 Difference]: Without dead ends: 83 [2018-09-30 20:40:01,525 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-09-30 20:40:01,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-09-30 20:40:01,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-09-30 20:40:01,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-09-30 20:40:01,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-09-30 20:40:01,529 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 80 [2018-09-30 20:40:01,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:01,529 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-09-30 20:40:01,529 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-09-30 20:40:01,529 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-09-30 20:40:01,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-09-30 20:40:01,530 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:01,530 INFO L375 BasicCegarLoop]: trace histogram [40, 39, 1, 1, 1] [2018-09-30 20:40:01,530 INFO L423 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:01,530 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:01,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1569595037, now seen corresponding path program 39 times [2018-09-30 20:40:01,531 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:01,531 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:01,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:01,531 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:01,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:01,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:02,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:02,103 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:02,103 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:02,112 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:40:02,319 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2018-09-30 20:40:02,319 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:02,322 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:02,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:02,486 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:02,486 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-09-30 20:40:02,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-09-30 20:40:02,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-09-30 20:40:02,487 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:02,487 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 42 states. [2018-09-30 20:40:02,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:02,807 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-09-30 20:40:02,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-09-30 20:40:02,808 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 82 [2018-09-30 20:40:02,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:02,809 INFO L225 Difference]: With dead ends: 87 [2018-09-30 20:40:02,809 INFO L226 Difference]: Without dead ends: 85 [2018-09-30 20:40:02,810 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-09-30 20:40:02,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-09-30 20:40:02,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-09-30 20:40:02,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-09-30 20:40:02,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2018-09-30 20:40:02,813 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 82 [2018-09-30 20:40:02,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:02,813 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2018-09-30 20:40:02,813 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-09-30 20:40:02,813 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2018-09-30 20:40:02,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-09-30 20:40:02,813 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:02,813 INFO L375 BasicCegarLoop]: trace histogram [41, 40, 1, 1, 1] [2018-09-30 20:40:02,814 INFO L423 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:02,814 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:02,814 INFO L82 PathProgramCache]: Analyzing trace with hash 847361751, now seen corresponding path program 40 times [2018-09-30 20:40:02,814 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:02,814 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:02,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:02,815 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:02,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:02,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:03,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:03,150 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:03,150 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:03,158 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:40:03,198 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:40:03,198 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:03,200 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:03,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:03,365 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:03,365 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-09-30 20:40:03,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-09-30 20:40:03,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-09-30 20:40:03,365 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:03,366 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 43 states. [2018-09-30 20:40:03,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:03,700 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-09-30 20:40:03,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-09-30 20:40:03,701 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 84 [2018-09-30 20:40:03,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:03,702 INFO L225 Difference]: With dead ends: 89 [2018-09-30 20:40:03,702 INFO L226 Difference]: Without dead ends: 87 [2018-09-30 20:40:03,702 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-09-30 20:40:03,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-09-30 20:40:03,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-09-30 20:40:03,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-09-30 20:40:03,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-09-30 20:40:03,705 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 84 [2018-09-30 20:40:03,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:03,706 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-09-30 20:40:03,706 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-09-30 20:40:03,706 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-09-30 20:40:03,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-09-30 20:40:03,707 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:03,707 INFO L375 BasicCegarLoop]: trace histogram [42, 41, 1, 1, 1] [2018-09-30 20:40:03,707 INFO L423 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:03,707 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:03,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1729091439, now seen corresponding path program 41 times [2018-09-30 20:40:03,707 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:03,708 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:03,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:03,708 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:03,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:03,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:04,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:04,110 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:04,110 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:04,118 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:40:04,659 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2018-09-30 20:40:04,660 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:04,663 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:05,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:05,067 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:05,067 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-09-30 20:40:05,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-09-30 20:40:05,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-09-30 20:40:05,068 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:05,068 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 44 states. [2018-09-30 20:40:05,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:05,328 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-09-30 20:40:05,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-09-30 20:40:05,329 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 86 [2018-09-30 20:40:05,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:05,330 INFO L225 Difference]: With dead ends: 91 [2018-09-30 20:40:05,330 INFO L226 Difference]: Without dead ends: 89 [2018-09-30 20:40:05,330 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-09-30 20:40:05,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-09-30 20:40:05,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-09-30 20:40:05,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-09-30 20:40:05,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-09-30 20:40:05,333 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 86 [2018-09-30 20:40:05,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:05,333 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-09-30 20:40:05,333 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-09-30 20:40:05,333 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-09-30 20:40:05,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-09-30 20:40:05,334 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:05,334 INFO L375 BasicCegarLoop]: trace histogram [43, 42, 1, 1, 1] [2018-09-30 20:40:05,334 INFO L423 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:05,334 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:05,334 INFO L82 PathProgramCache]: Analyzing trace with hash 495522763, now seen corresponding path program 42 times [2018-09-30 20:40:05,334 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:05,335 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:05,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:05,335 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:05,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:05,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:05,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:05,787 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:05,787 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:05,795 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:40:06,034 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-09-30 20:40:06,034 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:06,037 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:06,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:06,222 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:06,222 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-09-30 20:40:06,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-09-30 20:40:06,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-09-30 20:40:06,223 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:06,223 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 45 states. [2018-09-30 20:40:06,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:06,388 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-09-30 20:40:06,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-09-30 20:40:06,389 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 88 [2018-09-30 20:40:06,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:06,390 INFO L225 Difference]: With dead ends: 93 [2018-09-30 20:40:06,390 INFO L226 Difference]: Without dead ends: 91 [2018-09-30 20:40:06,390 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-09-30 20:40:06,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-09-30 20:40:06,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-09-30 20:40:06,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-09-30 20:40:06,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-09-30 20:40:06,393 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 88 [2018-09-30 20:40:06,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:06,394 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-09-30 20:40:06,394 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-09-30 20:40:06,394 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-09-30 20:40:06,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-09-30 20:40:06,394 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:06,394 INFO L375 BasicCegarLoop]: trace histogram [44, 43, 1, 1, 1] [2018-09-30 20:40:06,394 INFO L423 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:06,394 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:06,395 INFO L82 PathProgramCache]: Analyzing trace with hash -543942523, now seen corresponding path program 43 times [2018-09-30 20:40:06,395 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:06,395 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:06,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:06,395 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:06,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:06,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:06,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:06,835 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:06,835 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:06,843 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:40:06,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:06,890 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:07,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:07,057 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:07,057 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-09-30 20:40:07,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-09-30 20:40:07,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-09-30 20:40:07,058 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:07,058 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 46 states. [2018-09-30 20:40:07,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:07,338 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-09-30 20:40:07,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-09-30 20:40:07,338 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 90 [2018-09-30 20:40:07,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:07,339 INFO L225 Difference]: With dead ends: 95 [2018-09-30 20:40:07,339 INFO L226 Difference]: Without dead ends: 93 [2018-09-30 20:40:07,339 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-09-30 20:40:07,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-09-30 20:40:07,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-09-30 20:40:07,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-09-30 20:40:07,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-09-30 20:40:07,342 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 90 [2018-09-30 20:40:07,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:07,342 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-09-30 20:40:07,342 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-09-30 20:40:07,342 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-09-30 20:40:07,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-09-30 20:40:07,342 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:07,342 INFO L375 BasicCegarLoop]: trace histogram [45, 44, 1, 1, 1] [2018-09-30 20:40:07,343 INFO L423 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:07,343 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:07,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1257297599, now seen corresponding path program 44 times [2018-09-30 20:40:07,343 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:07,343 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:07,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:07,344 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:40:07,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:07,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:08,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:08,442 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:08,442 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:08,450 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:40:08,499 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:40:08,499 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:08,501 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:08,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:08,882 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:08,882 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-09-30 20:40:08,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-09-30 20:40:08,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-09-30 20:40:08,883 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:08,883 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 47 states. [2018-09-30 20:40:09,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:09,284 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-09-30 20:40:09,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-09-30 20:40:09,285 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 92 [2018-09-30 20:40:09,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:09,286 INFO L225 Difference]: With dead ends: 97 [2018-09-30 20:40:09,286 INFO L226 Difference]: Without dead ends: 95 [2018-09-30 20:40:09,286 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-09-30 20:40:09,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-09-30 20:40:09,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-09-30 20:40:09,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-09-30 20:40:09,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-09-30 20:40:09,290 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 92 [2018-09-30 20:40:09,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:09,291 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-09-30 20:40:09,291 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-09-30 20:40:09,291 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-09-30 20:40:09,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-09-30 20:40:09,291 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:09,291 INFO L375 BasicCegarLoop]: trace histogram [46, 45, 1, 1, 1] [2018-09-30 20:40:09,292 INFO L423 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:09,292 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:09,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1377234553, now seen corresponding path program 45 times [2018-09-30 20:40:09,292 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:09,292 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:09,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:09,293 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:09,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:09,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:09,799 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:09,799 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:09,799 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:09,809 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:40:10,111 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2018-09-30 20:40:10,112 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:10,116 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:10,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:10,318 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:10,319 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-09-30 20:40:10,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-09-30 20:40:10,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-09-30 20:40:10,319 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:10,319 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 48 states. [2018-09-30 20:40:10,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:10,556 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-09-30 20:40:10,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-09-30 20:40:10,557 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 94 [2018-09-30 20:40:10,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:10,558 INFO L225 Difference]: With dead ends: 99 [2018-09-30 20:40:10,558 INFO L226 Difference]: Without dead ends: 97 [2018-09-30 20:40:10,558 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-09-30 20:40:10,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-09-30 20:40:10,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-09-30 20:40:10,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-09-30 20:40:10,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-09-30 20:40:10,562 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 94 [2018-09-30 20:40:10,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:10,562 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-09-30 20:40:10,562 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-09-30 20:40:10,563 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-09-30 20:40:10,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-09-30 20:40:10,563 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:10,563 INFO L375 BasicCegarLoop]: trace histogram [47, 46, 1, 1, 1] [2018-09-30 20:40:10,563 INFO L423 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:10,564 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:10,564 INFO L82 PathProgramCache]: Analyzing trace with hash 672530355, now seen corresponding path program 46 times [2018-09-30 20:40:10,564 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:10,564 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:10,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:10,565 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:10,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:10,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:10,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:10,862 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:10,862 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:10,870 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:40:10,919 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:40:10,919 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:10,922 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:11,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:11,118 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:11,118 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-09-30 20:40:11,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-09-30 20:40:11,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-09-30 20:40:11,119 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:11,119 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 49 states. [2018-09-30 20:40:11,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:11,413 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-09-30 20:40:11,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-09-30 20:40:11,413 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 96 [2018-09-30 20:40:11,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:11,414 INFO L225 Difference]: With dead ends: 101 [2018-09-30 20:40:11,414 INFO L226 Difference]: Without dead ends: 99 [2018-09-30 20:40:11,414 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-09-30 20:40:11,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-09-30 20:40:11,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-09-30 20:40:11,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-09-30 20:40:11,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-09-30 20:40:11,417 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 96 [2018-09-30 20:40:11,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:11,418 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-09-30 20:40:11,418 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-09-30 20:40:11,418 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-09-30 20:40:11,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-09-30 20:40:11,418 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:11,418 INFO L375 BasicCegarLoop]: trace histogram [48, 47, 1, 1, 1] [2018-09-30 20:40:11,418 INFO L423 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:11,419 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:11,419 INFO L82 PathProgramCache]: Analyzing trace with hash 2056628845, now seen corresponding path program 47 times [2018-09-30 20:40:11,419 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:11,419 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:11,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:11,419 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:11,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:11,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:11,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:11,801 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:11,801 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:11,808 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:40:12,679 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2018-09-30 20:40:12,679 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:12,683 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:12,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:12,973 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:12,974 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-09-30 20:40:12,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-09-30 20:40:12,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-09-30 20:40:12,975 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:12,975 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 50 states. [2018-09-30 20:40:13,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:13,252 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-09-30 20:40:13,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-09-30 20:40:13,252 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 98 [2018-09-30 20:40:13,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:13,254 INFO L225 Difference]: With dead ends: 103 [2018-09-30 20:40:13,254 INFO L226 Difference]: Without dead ends: 101 [2018-09-30 20:40:13,254 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-09-30 20:40:13,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-09-30 20:40:13,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-09-30 20:40:13,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-09-30 20:40:13,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2018-09-30 20:40:13,258 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 98 [2018-09-30 20:40:13,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:13,258 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2018-09-30 20:40:13,259 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-09-30 20:40:13,259 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2018-09-30 20:40:13,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-09-30 20:40:13,259 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:13,259 INFO L375 BasicCegarLoop]: trace histogram [49, 48, 1, 1, 1] [2018-09-30 20:40:13,260 INFO L423 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:13,260 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:13,260 INFO L82 PathProgramCache]: Analyzing trace with hash 735415975, now seen corresponding path program 48 times [2018-09-30 20:40:13,260 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:13,260 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:13,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:13,261 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:13,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:13,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:13,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:13,796 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:13,796 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:13,803 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:40:14,113 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-09-30 20:40:14,114 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:14,117 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:14,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:14,307 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:14,308 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-09-30 20:40:14,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-09-30 20:40:14,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-09-30 20:40:14,308 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:14,308 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 51 states. [2018-09-30 20:40:14,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:14,582 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-09-30 20:40:14,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-09-30 20:40:14,583 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 100 [2018-09-30 20:40:14,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:14,584 INFO L225 Difference]: With dead ends: 105 [2018-09-30 20:40:14,584 INFO L226 Difference]: Without dead ends: 103 [2018-09-30 20:40:14,584 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-09-30 20:40:14,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-09-30 20:40:14,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-09-30 20:40:14,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-09-30 20:40:14,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-09-30 20:40:14,588 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 100 [2018-09-30 20:40:14,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:14,588 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-09-30 20:40:14,588 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-09-30 20:40:14,589 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-09-30 20:40:14,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-09-30 20:40:14,589 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:14,589 INFO L375 BasicCegarLoop]: trace histogram [50, 49, 1, 1, 1] [2018-09-30 20:40:14,589 INFO L423 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:14,589 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:14,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1934799775, now seen corresponding path program 49 times [2018-09-30 20:40:14,590 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:14,590 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:14,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:14,590 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:14,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:14,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:14,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:14,923 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:14,923 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:14,930 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:40:14,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:14,985 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:15,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:15,997 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:15,997 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-09-30 20:40:15,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-09-30 20:40:15,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-09-30 20:40:15,998 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:15,998 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 52 states. [2018-09-30 20:40:16,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:16,260 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-09-30 20:40:16,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-09-30 20:40:16,260 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 102 [2018-09-30 20:40:16,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:16,261 INFO L225 Difference]: With dead ends: 107 [2018-09-30 20:40:16,261 INFO L226 Difference]: Without dead ends: 105 [2018-09-30 20:40:16,261 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-09-30 20:40:16,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-09-30 20:40:16,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-09-30 20:40:16,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-09-30 20:40:16,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-09-30 20:40:16,264 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 102 [2018-09-30 20:40:16,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:16,265 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-09-30 20:40:16,265 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-09-30 20:40:16,265 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-09-30 20:40:16,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-09-30 20:40:16,265 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:16,266 INFO L375 BasicCegarLoop]: trace histogram [51, 50, 1, 1, 1] [2018-09-30 20:40:16,266 INFO L423 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:16,266 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:16,266 INFO L82 PathProgramCache]: Analyzing trace with hash 378307483, now seen corresponding path program 50 times [2018-09-30 20:40:16,266 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:16,266 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:16,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:16,267 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:40:16,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:16,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:16,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:16,599 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:16,599 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:16,607 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:40:16,655 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:40:16,655 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:16,658 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:16,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:16,972 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:16,972 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-09-30 20:40:16,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-09-30 20:40:16,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-09-30 20:40:16,973 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:16,973 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 53 states. [2018-09-30 20:40:17,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:17,450 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-09-30 20:40:17,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-09-30 20:40:17,451 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 104 [2018-09-30 20:40:17,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:17,452 INFO L225 Difference]: With dead ends: 109 [2018-09-30 20:40:17,452 INFO L226 Difference]: Without dead ends: 107 [2018-09-30 20:40:17,452 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-09-30 20:40:17,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-09-30 20:40:17,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-09-30 20:40:17,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-09-30 20:40:17,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-09-30 20:40:17,455 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 104 [2018-09-30 20:40:17,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:17,456 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-09-30 20:40:17,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-09-30 20:40:17,456 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-09-30 20:40:17,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-09-30 20:40:17,457 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:17,457 INFO L375 BasicCegarLoop]: trace histogram [52, 51, 1, 1, 1] [2018-09-30 20:40:17,457 INFO L423 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:17,457 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:17,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1518676907, now seen corresponding path program 51 times [2018-09-30 20:40:17,457 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:17,457 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:17,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:17,458 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:17,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:17,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:17,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2652 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:17,817 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:17,817 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:17,825 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:40:18,251 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2018-09-30 20:40:18,251 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:18,255 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:18,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2652 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:18,659 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:18,659 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-09-30 20:40:18,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-09-30 20:40:18,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-09-30 20:40:18,660 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:18,660 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 54 states. [2018-09-30 20:40:18,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:18,991 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-09-30 20:40:18,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-09-30 20:40:18,991 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 106 [2018-09-30 20:40:18,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:18,992 INFO L225 Difference]: With dead ends: 111 [2018-09-30 20:40:18,992 INFO L226 Difference]: Without dead ends: 109 [2018-09-30 20:40:18,993 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-09-30 20:40:18,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-09-30 20:40:18,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-09-30 20:40:18,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-09-30 20:40:18,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-09-30 20:40:18,996 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 106 [2018-09-30 20:40:18,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:18,997 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-09-30 20:40:18,997 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-09-30 20:40:18,997 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-09-30 20:40:18,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-09-30 20:40:18,997 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:18,998 INFO L375 BasicCegarLoop]: trace histogram [53, 52, 1, 1, 1] [2018-09-30 20:40:18,998 INFO L423 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:18,998 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:18,998 INFO L82 PathProgramCache]: Analyzing trace with hash 840425103, now seen corresponding path program 52 times [2018-09-30 20:40:18,998 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:18,998 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:18,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:18,999 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:18,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:19,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:19,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2756 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:19,755 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:19,755 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:19,772 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:40:19,844 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:40:19,845 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:19,848 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:20,145 INFO L134 CoverageAnalysis]: Checked inductivity of 2756 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:20,165 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:20,166 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-09-30 20:40:20,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-09-30 20:40:20,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-09-30 20:40:20,166 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:20,166 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 55 states. [2018-09-30 20:40:20,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:20,596 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-09-30 20:40:20,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-09-30 20:40:20,597 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 108 [2018-09-30 20:40:20,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:20,597 INFO L225 Difference]: With dead ends: 113 [2018-09-30 20:40:20,597 INFO L226 Difference]: Without dead ends: 111 [2018-09-30 20:40:20,598 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-09-30 20:40:20,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-09-30 20:40:20,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-09-30 20:40:20,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-09-30 20:40:20,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-09-30 20:40:20,601 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 108 [2018-09-30 20:40:20,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:20,601 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-09-30 20:40:20,601 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-09-30 20:40:20,602 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-09-30 20:40:20,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-09-30 20:40:20,602 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:20,602 INFO L375 BasicCegarLoop]: trace histogram [54, 53, 1, 1, 1] [2018-09-30 20:40:20,602 INFO L423 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:20,602 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:20,602 INFO L82 PathProgramCache]: Analyzing trace with hash 194724425, now seen corresponding path program 53 times [2018-09-30 20:40:20,603 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:20,603 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:20,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:20,603 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:20,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:20,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:20,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:20,976 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:20,976 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:20,994 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:40:22,434 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2018-09-30 20:40:22,435 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:22,440 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:22,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:22,683 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:22,684 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-09-30 20:40:22,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-09-30 20:40:22,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-09-30 20:40:22,685 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:22,685 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 56 states. [2018-09-30 20:40:22,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:22,898 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-09-30 20:40:22,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-09-30 20:40:22,898 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 110 [2018-09-30 20:40:22,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:22,899 INFO L225 Difference]: With dead ends: 115 [2018-09-30 20:40:22,899 INFO L226 Difference]: Without dead ends: 113 [2018-09-30 20:40:22,900 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-09-30 20:40:22,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-09-30 20:40:22,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-09-30 20:40:22,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-09-30 20:40:22,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2018-09-30 20:40:22,903 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 110 [2018-09-30 20:40:22,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:22,903 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2018-09-30 20:40:22,904 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-09-30 20:40:22,904 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2018-09-30 20:40:22,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-09-30 20:40:22,904 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:22,904 INFO L375 BasicCegarLoop]: trace histogram [55, 54, 1, 1, 1] [2018-09-30 20:40:22,905 INFO L423 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:22,905 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:22,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1848336509, now seen corresponding path program 54 times [2018-09-30 20:40:22,905 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:22,905 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:22,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:22,906 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:22,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:23,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:23,300 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:23,300 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:23,307 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:40:23,744 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2018-09-30 20:40:23,744 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:23,748 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:24,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:24,050 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:24,050 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2018-09-30 20:40:24,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-09-30 20:40:24,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-09-30 20:40:24,051 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:24,051 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 57 states. [2018-09-30 20:40:24,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:24,471 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-09-30 20:40:24,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-09-30 20:40:24,472 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 112 [2018-09-30 20:40:24,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:24,472 INFO L225 Difference]: With dead ends: 117 [2018-09-30 20:40:24,473 INFO L226 Difference]: Without dead ends: 115 [2018-09-30 20:40:24,473 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-09-30 20:40:24,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-09-30 20:40:24,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-09-30 20:40:24,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-09-30 20:40:24,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-09-30 20:40:24,476 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 112 [2018-09-30 20:40:24,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:24,476 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-09-30 20:40:24,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-09-30 20:40:24,476 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-09-30 20:40:24,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-09-30 20:40:24,477 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:24,477 INFO L375 BasicCegarLoop]: trace histogram [56, 55, 1, 1, 1] [2018-09-30 20:40:24,477 INFO L423 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:24,478 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:24,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1865127485, now seen corresponding path program 55 times [2018-09-30 20:40:24,478 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:24,478 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:24,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:24,479 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:24,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:24,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:24,903 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:24,903 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:24,903 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:24,910 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:40:24,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:24,967 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:25,248 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:25,271 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:25,271 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-09-30 20:40:25,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-09-30 20:40:25,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-09-30 20:40:25,272 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:25,272 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 58 states. [2018-09-30 20:40:26,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:26,200 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2018-09-30 20:40:26,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-09-30 20:40:26,201 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 114 [2018-09-30 20:40:26,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:26,202 INFO L225 Difference]: With dead ends: 119 [2018-09-30 20:40:26,202 INFO L226 Difference]: Without dead ends: 117 [2018-09-30 20:40:26,202 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-09-30 20:40:26,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-09-30 20:40:26,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-09-30 20:40:26,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-09-30 20:40:26,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2018-09-30 20:40:26,206 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 114 [2018-09-30 20:40:26,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:26,206 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2018-09-30 20:40:26,206 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-09-30 20:40:26,206 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2018-09-30 20:40:26,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-09-30 20:40:26,207 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:26,207 INFO L375 BasicCegarLoop]: trace histogram [57, 56, 1, 1, 1] [2018-09-30 20:40:26,207 INFO L423 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:26,207 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:26,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1386202743, now seen corresponding path program 56 times [2018-09-30 20:40:26,208 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:26,208 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:26,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:26,209 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:40:26,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:26,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:26,580 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:26,581 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:26,581 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:26,590 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:40:26,649 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:40:26,649 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:26,652 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:27,825 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:27,844 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:27,845 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-09-30 20:40:27,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-09-30 20:40:27,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-09-30 20:40:27,846 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:27,846 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand 59 states. [2018-09-30 20:40:28,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:28,221 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-09-30 20:40:28,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-09-30 20:40:28,221 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 116 [2018-09-30 20:40:28,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:28,222 INFO L225 Difference]: With dead ends: 121 [2018-09-30 20:40:28,222 INFO L226 Difference]: Without dead ends: 119 [2018-09-30 20:40:28,222 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-09-30 20:40:28,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-09-30 20:40:28,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-09-30 20:40:28,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-09-30 20:40:28,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-09-30 20:40:28,227 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 116 [2018-09-30 20:40:28,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:28,227 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-09-30 20:40:28,227 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-09-30 20:40:28,228 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-09-30 20:40:28,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-09-30 20:40:28,228 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:28,229 INFO L375 BasicCegarLoop]: trace histogram [58, 57, 1, 1, 1] [2018-09-30 20:40:28,229 INFO L423 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:28,229 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:28,229 INFO L82 PathProgramCache]: Analyzing trace with hash 701026353, now seen corresponding path program 57 times [2018-09-30 20:40:28,229 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:28,230 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:28,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:28,230 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:28,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:28,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:28,598 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:28,599 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:28,599 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:28,606 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:40:29,220 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2018-09-30 20:40:29,220 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:29,224 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:29,526 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:29,547 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:29,547 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-09-30 20:40:29,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-09-30 20:40:29,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-09-30 20:40:29,548 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:29,548 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 60 states. [2018-09-30 20:40:29,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:29,785 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2018-09-30 20:40:29,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-09-30 20:40:29,785 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 118 [2018-09-30 20:40:29,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:29,786 INFO L225 Difference]: With dead ends: 123 [2018-09-30 20:40:29,787 INFO L226 Difference]: Without dead ends: 121 [2018-09-30 20:40:29,787 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-09-30 20:40:29,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-09-30 20:40:29,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-09-30 20:40:29,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-09-30 20:40:29,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2018-09-30 20:40:29,791 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 118 [2018-09-30 20:40:29,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:29,791 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2018-09-30 20:40:29,792 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-09-30 20:40:29,792 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2018-09-30 20:40:29,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-09-30 20:40:29,792 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:29,793 INFO L375 BasicCegarLoop]: trace histogram [59, 58, 1, 1, 1] [2018-09-30 20:40:29,793 INFO L423 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:29,793 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:29,793 INFO L82 PathProgramCache]: Analyzing trace with hash -623488149, now seen corresponding path program 58 times [2018-09-30 20:40:29,793 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:29,793 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:29,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:29,794 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:29,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:29,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:30,192 INFO L134 CoverageAnalysis]: Checked inductivity of 3422 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:30,192 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:30,192 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:30,201 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:40:30,262 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:40:30,262 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:30,264 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:30,618 INFO L134 CoverageAnalysis]: Checked inductivity of 3422 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:30,637 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:30,638 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-09-30 20:40:30,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-09-30 20:40:30,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-09-30 20:40:30,639 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:30,639 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand 61 states. [2018-09-30 20:40:31,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:31,013 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-09-30 20:40:31,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-09-30 20:40:31,013 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 120 [2018-09-30 20:40:31,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:31,014 INFO L225 Difference]: With dead ends: 125 [2018-09-30 20:40:31,014 INFO L226 Difference]: Without dead ends: 123 [2018-09-30 20:40:31,014 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-09-30 20:40:31,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-09-30 20:40:31,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-09-30 20:40:31,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-09-30 20:40:31,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2018-09-30 20:40:31,017 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 120 [2018-09-30 20:40:31,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:31,017 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2018-09-30 20:40:31,018 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-09-30 20:40:31,018 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2018-09-30 20:40:31,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-09-30 20:40:31,018 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:31,018 INFO L375 BasicCegarLoop]: trace histogram [60, 59, 1, 1, 1] [2018-09-30 20:40:31,019 INFO L423 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:31,019 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:31,019 INFO L82 PathProgramCache]: Analyzing trace with hash 2123362341, now seen corresponding path program 59 times [2018-09-30 20:40:31,019 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:31,019 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:31,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:31,020 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:31,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:31,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:31,433 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:31,433 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:31,433 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:31,441 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:40:33,492 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2018-09-30 20:40:33,492 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:33,496 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:33,850 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:33,873 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:33,874 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-09-30 20:40:33,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-09-30 20:40:33,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-09-30 20:40:33,875 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:33,875 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 62 states. [2018-09-30 20:40:34,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:34,291 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2018-09-30 20:40:34,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-09-30 20:40:34,292 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 122 [2018-09-30 20:40:34,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:34,292 INFO L225 Difference]: With dead ends: 127 [2018-09-30 20:40:34,292 INFO L226 Difference]: Without dead ends: 125 [2018-09-30 20:40:34,292 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-09-30 20:40:34,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-09-30 20:40:34,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-09-30 20:40:34,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-09-30 20:40:34,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 125 transitions. [2018-09-30 20:40:34,295 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 125 transitions. Word has length 122 [2018-09-30 20:40:34,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:34,295 INFO L480 AbstractCegarLoop]: Abstraction has 125 states and 125 transitions. [2018-09-30 20:40:34,295 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-09-30 20:40:34,295 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 125 transitions. [2018-09-30 20:40:34,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-09-30 20:40:34,296 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:34,296 INFO L375 BasicCegarLoop]: trace histogram [61, 60, 1, 1, 1] [2018-09-30 20:40:34,296 INFO L423 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:34,296 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:34,296 INFO L82 PathProgramCache]: Analyzing trace with hash 441796191, now seen corresponding path program 60 times [2018-09-30 20:40:34,296 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:34,296 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:34,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:34,297 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:34,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:34,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:35,278 INFO L134 CoverageAnalysis]: Checked inductivity of 3660 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:35,278 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:35,278 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:35,287 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:40:35,893 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2018-09-30 20:40:35,893 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:35,898 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:36,118 INFO L134 CoverageAnalysis]: Checked inductivity of 3660 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:36,141 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:36,141 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2018-09-30 20:40:36,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-09-30 20:40:36,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-09-30 20:40:36,142 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:36,142 INFO L87 Difference]: Start difference. First operand 125 states and 125 transitions. Second operand 63 states. [2018-09-30 20:40:36,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:36,579 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-09-30 20:40:36,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-09-30 20:40:36,579 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 124 [2018-09-30 20:40:36,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:36,580 INFO L225 Difference]: With dead ends: 129 [2018-09-30 20:40:36,580 INFO L226 Difference]: Without dead ends: 127 [2018-09-30 20:40:36,580 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-09-30 20:40:36,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-09-30 20:40:36,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-09-30 20:40:36,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-09-30 20:40:36,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-09-30 20:40:36,583 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 124 [2018-09-30 20:40:36,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:36,583 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-09-30 20:40:36,583 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-09-30 20:40:36,583 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-09-30 20:40:36,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-09-30 20:40:36,583 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:36,584 INFO L375 BasicCegarLoop]: trace histogram [62, 61, 1, 1, 1] [2018-09-30 20:40:36,584 INFO L423 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:36,584 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:36,584 INFO L82 PathProgramCache]: Analyzing trace with hash -635570663, now seen corresponding path program 61 times [2018-09-30 20:40:36,584 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:36,584 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:36,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:36,585 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:36,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:36,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:36,944 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:36,944 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:36,944 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:36,952 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:40:37,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:37,018 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:37,243 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:37,263 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:37,263 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-09-30 20:40:37,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-09-30 20:40:37,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-09-30 20:40:37,264 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:37,264 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 64 states. [2018-09-30 20:40:37,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:37,610 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2018-09-30 20:40:37,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-09-30 20:40:37,610 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 126 [2018-09-30 20:40:37,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:37,612 INFO L225 Difference]: With dead ends: 131 [2018-09-30 20:40:37,612 INFO L226 Difference]: Without dead ends: 129 [2018-09-30 20:40:37,612 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-09-30 20:40:37,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-09-30 20:40:37,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-09-30 20:40:37,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-09-30 20:40:37,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 129 transitions. [2018-09-30 20:40:37,615 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 129 transitions. Word has length 126 [2018-09-30 20:40:37,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:37,615 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 129 transitions. [2018-09-30 20:40:37,615 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-09-30 20:40:37,615 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 129 transitions. [2018-09-30 20:40:37,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-09-30 20:40:37,616 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:37,616 INFO L375 BasicCegarLoop]: trace histogram [63, 62, 1, 1, 1] [2018-09-30 20:40:37,616 INFO L423 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:37,616 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:37,616 INFO L82 PathProgramCache]: Analyzing trace with hash -897999021, now seen corresponding path program 62 times [2018-09-30 20:40:37,616 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:37,616 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:37,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:37,617 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:40:37,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:37,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:38,000 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:38,001 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:38,001 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:38,010 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:40:38,073 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:40:38,074 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:38,076 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:38,285 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:38,306 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:38,306 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-09-30 20:40:38,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-09-30 20:40:38,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-09-30 20:40:38,307 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:38,307 INFO L87 Difference]: Start difference. First operand 129 states and 129 transitions. Second operand 65 states. [2018-09-30 20:40:38,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:38,629 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-09-30 20:40:38,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-09-30 20:40:38,630 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 128 [2018-09-30 20:40:38,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:38,631 INFO L225 Difference]: With dead ends: 133 [2018-09-30 20:40:38,631 INFO L226 Difference]: Without dead ends: 131 [2018-09-30 20:40:38,631 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-09-30 20:40:38,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-09-30 20:40:38,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-09-30 20:40:38,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-09-30 20:40:38,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2018-09-30 20:40:38,634 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 128 [2018-09-30 20:40:38,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:38,634 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2018-09-30 20:40:38,634 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-09-30 20:40:38,634 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2018-09-30 20:40:38,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-09-30 20:40:38,635 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:38,635 INFO L375 BasicCegarLoop]: trace histogram [64, 63, 1, 1, 1] [2018-09-30 20:40:38,635 INFO L423 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:38,635 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:38,635 INFO L82 PathProgramCache]: Analyzing trace with hash 311419405, now seen corresponding path program 63 times [2018-09-30 20:40:38,636 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:38,636 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:38,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:38,636 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:38,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:38,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:39,042 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:39,043 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:39,043 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:39,053 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:40:39,919 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2018-09-30 20:40:39,920 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:39,925 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:40,171 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:40,194 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:40,194 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-09-30 20:40:40,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-09-30 20:40:40,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-09-30 20:40:40,195 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:40,195 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 66 states. [2018-09-30 20:40:40,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:40,714 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2018-09-30 20:40:40,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-09-30 20:40:40,714 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 130 [2018-09-30 20:40:40,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:40,715 INFO L225 Difference]: With dead ends: 135 [2018-09-30 20:40:40,715 INFO L226 Difference]: Without dead ends: 133 [2018-09-30 20:40:40,715 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-09-30 20:40:40,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-09-30 20:40:40,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-09-30 20:40:40,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-09-30 20:40:40,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2018-09-30 20:40:40,718 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 130 [2018-09-30 20:40:40,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:40,718 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2018-09-30 20:40:40,718 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-09-30 20:40:40,718 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2018-09-30 20:40:40,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-09-30 20:40:40,719 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:40,719 INFO L375 BasicCegarLoop]: trace histogram [65, 64, 1, 1, 1] [2018-09-30 20:40:40,719 INFO L423 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:40,720 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:40,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1373610425, now seen corresponding path program 64 times [2018-09-30 20:40:40,720 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:40,720 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:40,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:40,721 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:40,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:40,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:41,100 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:41,100 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:41,100 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:41,108 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:40:41,189 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:40:41,190 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:41,194 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:41,718 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:41,738 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:41,738 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-09-30 20:40:41,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-09-30 20:40:41,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-09-30 20:40:41,739 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:41,739 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 67 states. [2018-09-30 20:40:42,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:42,186 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-09-30 20:40:42,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-09-30 20:40:42,186 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 132 [2018-09-30 20:40:42,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:42,187 INFO L225 Difference]: With dead ends: 137 [2018-09-30 20:40:42,187 INFO L226 Difference]: Without dead ends: 135 [2018-09-30 20:40:42,187 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-09-30 20:40:42,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-09-30 20:40:42,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-09-30 20:40:42,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-09-30 20:40:42,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-09-30 20:40:42,191 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 132 [2018-09-30 20:40:42,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:42,191 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-09-30 20:40:42,191 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-09-30 20:40:42,191 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-09-30 20:40:42,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-09-30 20:40:42,192 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:42,192 INFO L375 BasicCegarLoop]: trace histogram [66, 65, 1, 1, 1] [2018-09-30 20:40:42,192 INFO L423 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:42,193 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:42,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1484606463, now seen corresponding path program 65 times [2018-09-30 20:40:42,193 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:42,193 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:42,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:42,194 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:42,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:42,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:42,591 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:42,591 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:42,591 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:42,598 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:40:45,483 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2018-09-30 20:40:45,483 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:45,490 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:45,925 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:45,948 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:45,948 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-09-30 20:40:45,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-09-30 20:40:45,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-09-30 20:40:45,949 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:45,949 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 68 states. [2018-09-30 20:40:46,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:46,405 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2018-09-30 20:40:46,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-09-30 20:40:46,406 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 134 [2018-09-30 20:40:46,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:46,406 INFO L225 Difference]: With dead ends: 139 [2018-09-30 20:40:46,406 INFO L226 Difference]: Without dead ends: 137 [2018-09-30 20:40:46,407 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-09-30 20:40:46,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-09-30 20:40:46,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-09-30 20:40:46,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-09-30 20:40:46,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 137 transitions. [2018-09-30 20:40:46,410 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 137 transitions. Word has length 134 [2018-09-30 20:40:46,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:46,411 INFO L480 AbstractCegarLoop]: Abstraction has 137 states and 137 transitions. [2018-09-30 20:40:46,411 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-09-30 20:40:46,411 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 137 transitions. [2018-09-30 20:40:46,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-09-30 20:40:46,411 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:46,412 INFO L375 BasicCegarLoop]: trace histogram [67, 66, 1, 1, 1] [2018-09-30 20:40:46,412 INFO L423 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:46,412 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:46,412 INFO L82 PathProgramCache]: Analyzing trace with hash -777616581, now seen corresponding path program 66 times [2018-09-30 20:40:46,412 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:46,412 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:46,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:46,413 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:46,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:46,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:46,880 INFO L134 CoverageAnalysis]: Checked inductivity of 4422 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:46,881 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:46,881 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:46,888 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:40:47,706 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2018-09-30 20:40:47,706 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:47,712 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:48,041 INFO L134 CoverageAnalysis]: Checked inductivity of 4422 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:48,063 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:48,063 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 68 [2018-09-30 20:40:48,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-09-30 20:40:48,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-09-30 20:40:48,064 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:48,064 INFO L87 Difference]: Start difference. First operand 137 states and 137 transitions. Second operand 69 states. [2018-09-30 20:40:48,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:48,447 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-09-30 20:40:48,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-09-30 20:40:48,448 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 136 [2018-09-30 20:40:48,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:48,449 INFO L225 Difference]: With dead ends: 141 [2018-09-30 20:40:48,449 INFO L226 Difference]: Without dead ends: 139 [2018-09-30 20:40:48,449 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-09-30 20:40:48,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-09-30 20:40:48,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-09-30 20:40:48,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-09-30 20:40:48,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2018-09-30 20:40:48,453 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 136 [2018-09-30 20:40:48,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:48,453 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2018-09-30 20:40:48,453 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-09-30 20:40:48,453 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2018-09-30 20:40:48,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-09-30 20:40:48,454 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:48,454 INFO L375 BasicCegarLoop]: trace histogram [68, 67, 1, 1, 1] [2018-09-30 20:40:48,454 INFO L423 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:48,454 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:48,455 INFO L82 PathProgramCache]: Analyzing trace with hash 34827253, now seen corresponding path program 67 times [2018-09-30 20:40:48,455 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:48,455 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:48,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:48,455 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:48,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:48,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:48,835 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:48,835 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:48,835 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:48,842 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:40:48,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:48,912 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:49,782 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:49,803 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:49,803 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-09-30 20:40:49,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-09-30 20:40:49,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-09-30 20:40:49,804 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:49,804 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 70 states. [2018-09-30 20:40:50,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:50,271 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-09-30 20:40:50,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-09-30 20:40:50,272 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 138 [2018-09-30 20:40:50,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:50,273 INFO L225 Difference]: With dead ends: 143 [2018-09-30 20:40:50,273 INFO L226 Difference]: Without dead ends: 141 [2018-09-30 20:40:50,273 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-09-30 20:40:50,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-09-30 20:40:50,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-09-30 20:40:50,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-09-30 20:40:50,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2018-09-30 20:40:50,275 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 138 [2018-09-30 20:40:50,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:50,276 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2018-09-30 20:40:50,276 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-09-30 20:40:50,276 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2018-09-30 20:40:50,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-09-30 20:40:50,276 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:50,277 INFO L375 BasicCegarLoop]: trace histogram [69, 68, 1, 1, 1] [2018-09-30 20:40:50,277 INFO L423 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:50,277 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:50,277 INFO L82 PathProgramCache]: Analyzing trace with hash -890696145, now seen corresponding path program 68 times [2018-09-30 20:40:50,277 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:50,277 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:50,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:50,278 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:40:50,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:50,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:50,669 INFO L134 CoverageAnalysis]: Checked inductivity of 4692 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:50,669 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:50,669 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:50,677 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:40:50,749 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:40:50,749 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:50,752 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:51,106 INFO L134 CoverageAnalysis]: Checked inductivity of 4692 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:51,126 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:51,127 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-09-30 20:40:51,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-09-30 20:40:51,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-09-30 20:40:51,128 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:51,128 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 71 states. [2018-09-30 20:40:51,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:51,618 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-09-30 20:40:51,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-09-30 20:40:51,619 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 140 [2018-09-30 20:40:51,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:51,619 INFO L225 Difference]: With dead ends: 145 [2018-09-30 20:40:51,619 INFO L226 Difference]: Without dead ends: 143 [2018-09-30 20:40:51,620 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-09-30 20:40:51,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-09-30 20:40:51,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-09-30 20:40:51,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-09-30 20:40:51,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2018-09-30 20:40:51,623 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 140 [2018-09-30 20:40:51,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:51,623 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2018-09-30 20:40:51,623 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-09-30 20:40:51,623 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2018-09-30 20:40:51,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-09-30 20:40:51,624 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:51,624 INFO L375 BasicCegarLoop]: trace histogram [70, 69, 1, 1, 1] [2018-09-30 20:40:51,624 INFO L423 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:51,624 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:51,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1260451351, now seen corresponding path program 69 times [2018-09-30 20:40:51,624 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:51,625 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:51,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:51,625 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:51,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:51,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:52,011 INFO L134 CoverageAnalysis]: Checked inductivity of 4830 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:52,011 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:52,011 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:52,018 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:40:53,204 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2018-09-30 20:40:53,205 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:53,211 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:53,723 INFO L134 CoverageAnalysis]: Checked inductivity of 4830 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:53,745 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:53,745 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2018-09-30 20:40:53,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-09-30 20:40:53,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-09-30 20:40:53,746 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:53,746 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand 72 states. [2018-09-30 20:40:54,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:54,304 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2018-09-30 20:40:54,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-09-30 20:40:54,307 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 142 [2018-09-30 20:40:54,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:54,307 INFO L225 Difference]: With dead ends: 147 [2018-09-30 20:40:54,308 INFO L226 Difference]: Without dead ends: 145 [2018-09-30 20:40:54,308 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-09-30 20:40:54,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-09-30 20:40:54,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-09-30 20:40:54,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-09-30 20:40:54,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2018-09-30 20:40:54,311 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 142 [2018-09-30 20:40:54,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:54,311 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2018-09-30 20:40:54,311 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-09-30 20:40:54,311 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2018-09-30 20:40:54,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-09-30 20:40:54,312 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:54,312 INFO L375 BasicCegarLoop]: trace histogram [71, 70, 1, 1, 1] [2018-09-30 20:40:54,312 INFO L423 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:54,312 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:54,313 INFO L82 PathProgramCache]: Analyzing trace with hash -112918749, now seen corresponding path program 70 times [2018-09-30 20:40:54,313 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:54,313 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:54,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:54,313 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:54,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:54,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:54,780 INFO L134 CoverageAnalysis]: Checked inductivity of 4970 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:54,781 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:54,781 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:54,788 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:40:54,857 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:40:54,857 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:54,860 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:55,090 INFO L134 CoverageAnalysis]: Checked inductivity of 4970 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:55,110 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:55,110 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2018-09-30 20:40:55,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-09-30 20:40:55,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-09-30 20:40:55,111 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:55,112 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand 73 states. [2018-09-30 20:40:55,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:55,619 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-09-30 20:40:55,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-09-30 20:40:55,619 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 144 [2018-09-30 20:40:55,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:55,620 INFO L225 Difference]: With dead ends: 149 [2018-09-30 20:40:55,620 INFO L226 Difference]: Without dead ends: 147 [2018-09-30 20:40:55,620 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-09-30 20:40:55,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-09-30 20:40:55,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-09-30 20:40:55,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-09-30 20:40:55,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2018-09-30 20:40:55,624 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 144 [2018-09-30 20:40:55,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:55,624 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2018-09-30 20:40:55,624 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-09-30 20:40:55,624 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2018-09-30 20:40:55,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-09-30 20:40:55,625 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:55,625 INFO L375 BasicCegarLoop]: trace histogram [72, 71, 1, 1, 1] [2018-09-30 20:40:55,626 INFO L423 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:55,626 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:55,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1140683299, now seen corresponding path program 71 times [2018-09-30 20:40:55,626 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:55,628 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:55,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:55,629 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:55,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:55,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:56,404 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:40:56,404 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:56,404 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:40:56,411 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:41:00,596 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 72 check-sat command(s) [2018-09-30 20:41:00,596 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:41:00,603 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:41:00,863 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:41:00,889 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:41:00,889 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2018-09-30 20:41:00,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-09-30 20:41:00,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-09-30 20:41:00,890 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:41:00,890 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 74 states. [2018-09-30 20:41:01,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:41:01,571 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2018-09-30 20:41:01,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-09-30 20:41:01,571 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 146 [2018-09-30 20:41:01,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:41:01,572 INFO L225 Difference]: With dead ends: 151 [2018-09-30 20:41:01,572 INFO L226 Difference]: Without dead ends: 149 [2018-09-30 20:41:01,573 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-09-30 20:41:01,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-09-30 20:41:01,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-09-30 20:41:01,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-09-30 20:41:01,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 149 transitions. [2018-09-30 20:41:01,576 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 149 transitions. Word has length 146 [2018-09-30 20:41:01,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:41:01,576 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 149 transitions. [2018-09-30 20:41:01,576 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-09-30 20:41:01,576 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 149 transitions. [2018-09-30 20:41:01,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-09-30 20:41:01,577 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:41:01,577 INFO L375 BasicCegarLoop]: trace histogram [73, 72, 1, 1, 1] [2018-09-30 20:41:01,578 INFO L423 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:41:01,578 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:41:01,578 INFO L82 PathProgramCache]: Analyzing trace with hash -979937769, now seen corresponding path program 72 times [2018-09-30 20:41:01,578 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:41:01,578 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:41:01,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:01,579 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:41:01,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:01,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:02,113 INFO L134 CoverageAnalysis]: Checked inductivity of 5256 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:41:02,114 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:41:02,114 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:41:02,121 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:41:03,193 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2018-09-30 20:41:03,193 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:41:03,198 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:41:03,501 INFO L134 CoverageAnalysis]: Checked inductivity of 5256 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:41:03,524 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:41:03,524 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 74 [2018-09-30 20:41:03,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-09-30 20:41:03,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-09-30 20:41:03,525 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:41:03,525 INFO L87 Difference]: Start difference. First operand 149 states and 149 transitions. Second operand 75 states. [2018-09-30 20:41:03,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:41:03,880 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2018-09-30 20:41:03,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-09-30 20:41:03,880 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 148 [2018-09-30 20:41:03,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:41:03,881 INFO L225 Difference]: With dead ends: 153 [2018-09-30 20:41:03,881 INFO L226 Difference]: Without dead ends: 151 [2018-09-30 20:41:03,882 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-09-30 20:41:03,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-09-30 20:41:03,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-09-30 20:41:03,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-09-30 20:41:03,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2018-09-30 20:41:03,886 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 148 [2018-09-30 20:41:03,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:41:03,886 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2018-09-30 20:41:03,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-09-30 20:41:03,887 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2018-09-30 20:41:03,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-09-30 20:41:03,887 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:41:03,887 INFO L375 BasicCegarLoop]: trace histogram [74, 73, 1, 1, 1] [2018-09-30 20:41:03,888 INFO L423 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:41:03,888 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:41:03,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1122306095, now seen corresponding path program 73 times [2018-09-30 20:41:03,888 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:41:03,888 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:41:03,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:03,889 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:41:03,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:03,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:04,355 INFO L134 CoverageAnalysis]: Checked inductivity of 5402 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:41:04,355 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:41:04,355 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:41:04,362 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:41:04,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:04,438 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:41:04,697 INFO L134 CoverageAnalysis]: Checked inductivity of 5402 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:41:04,717 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:41:04,717 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2018-09-30 20:41:04,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-09-30 20:41:04,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-09-30 20:41:04,718 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:41:04,718 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 76 states. [2018-09-30 20:41:05,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:41:05,265 INFO L93 Difference]: Finished difference Result 155 states and 155 transitions. [2018-09-30 20:41:05,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-09-30 20:41:05,265 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 150 [2018-09-30 20:41:05,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:41:05,266 INFO L225 Difference]: With dead ends: 155 [2018-09-30 20:41:05,266 INFO L226 Difference]: Without dead ends: 153 [2018-09-30 20:41:05,266 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-09-30 20:41:05,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-09-30 20:41:05,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-09-30 20:41:05,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-09-30 20:41:05,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 153 transitions. [2018-09-30 20:41:05,269 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 153 transitions. Word has length 150 [2018-09-30 20:41:05,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:41:05,269 INFO L480 AbstractCegarLoop]: Abstraction has 153 states and 153 transitions. [2018-09-30 20:41:05,269 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-09-30 20:41:05,269 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 153 transitions. [2018-09-30 20:41:05,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-09-30 20:41:05,270 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:41:05,270 INFO L375 BasicCegarLoop]: trace histogram [75, 74, 1, 1, 1] [2018-09-30 20:41:05,270 INFO L423 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:41:05,270 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:41:05,270 INFO L82 PathProgramCache]: Analyzing trace with hash -499313909, now seen corresponding path program 74 times [2018-09-30 20:41:05,270 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:41:05,270 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:41:05,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:05,271 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:41:05,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:05,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:05,779 INFO L134 CoverageAnalysis]: Checked inductivity of 5550 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:41:05,780 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:41:05,780 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:41:05,788 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:41:05,861 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:41:05,861 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:41:05,865 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:41:06,283 INFO L134 CoverageAnalysis]: Checked inductivity of 5550 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:41:06,303 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:41:06,304 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2018-09-30 20:41:06,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-09-30 20:41:06,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-09-30 20:41:06,305 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:41:06,305 INFO L87 Difference]: Start difference. First operand 153 states and 153 transitions. Second operand 77 states. [2018-09-30 20:41:06,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:41:06,779 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-09-30 20:41:06,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-09-30 20:41:06,779 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 152 [2018-09-30 20:41:06,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:41:06,780 INFO L225 Difference]: With dead ends: 157 [2018-09-30 20:41:06,780 INFO L226 Difference]: Without dead ends: 155 [2018-09-30 20:41:06,780 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-09-30 20:41:06,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-09-30 20:41:06,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-09-30 20:41:06,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-09-30 20:41:06,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 155 transitions. [2018-09-30 20:41:06,783 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 155 transitions. Word has length 152 [2018-09-30 20:41:06,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:41:06,783 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 155 transitions. [2018-09-30 20:41:06,783 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-09-30 20:41:06,784 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 155 transitions. [2018-09-30 20:41:06,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-09-30 20:41:06,784 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:41:06,784 INFO L375 BasicCegarLoop]: trace histogram [76, 75, 1, 1, 1] [2018-09-30 20:41:06,784 INFO L423 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:41:06,785 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:41:06,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1195722693, now seen corresponding path program 75 times [2018-09-30 20:41:06,785 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:41:06,785 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:41:06,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:06,785 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:41:06,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:06,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:07,194 INFO L134 CoverageAnalysis]: Checked inductivity of 5700 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:41:07,194 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:41:07,194 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:41:07,204 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:41:08,803 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 76 check-sat command(s) [2018-09-30 20:41:08,803 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:41:08,808 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:41:09,063 INFO L134 CoverageAnalysis]: Checked inductivity of 5700 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:41:09,085 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:41:09,086 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2018-09-30 20:41:09,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-09-30 20:41:09,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-09-30 20:41:09,087 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:41:09,087 INFO L87 Difference]: Start difference. First operand 155 states and 155 transitions. Second operand 78 states. [2018-09-30 20:41:09,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:41:09,451 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2018-09-30 20:41:09,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-09-30 20:41:09,452 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 154 [2018-09-30 20:41:09,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:41:09,453 INFO L225 Difference]: With dead ends: 159 [2018-09-30 20:41:09,453 INFO L226 Difference]: Without dead ends: 157 [2018-09-30 20:41:09,453 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-09-30 20:41:09,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-09-30 20:41:09,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-09-30 20:41:09,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-09-30 20:41:09,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 157 transitions. [2018-09-30 20:41:09,457 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 157 transitions. Word has length 154 [2018-09-30 20:41:09,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:41:09,457 INFO L480 AbstractCegarLoop]: Abstraction has 157 states and 157 transitions. [2018-09-30 20:41:09,457 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-09-30 20:41:09,457 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 157 transitions. [2018-09-30 20:41:09,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-09-30 20:41:09,458 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:41:09,458 INFO L375 BasicCegarLoop]: trace histogram [77, 76, 1, 1, 1] [2018-09-30 20:41:09,458 INFO L423 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:41:09,458 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:41:09,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1961675265, now seen corresponding path program 76 times [2018-09-30 20:41:09,458 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:41:09,458 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:41:09,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:09,459 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:41:09,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:09,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:09,920 INFO L134 CoverageAnalysis]: Checked inductivity of 5852 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:41:09,920 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:41:09,920 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:41:09,929 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:41:10,004 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:41:10,004 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:41:10,008 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:41:10,264 INFO L134 CoverageAnalysis]: Checked inductivity of 5852 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:41:10,284 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:41:10,284 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2018-09-30 20:41:10,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-09-30 20:41:10,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-09-30 20:41:10,285 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:41:10,286 INFO L87 Difference]: Start difference. First operand 157 states and 157 transitions. Second operand 79 states. [2018-09-30 20:41:11,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:41:11,480 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2018-09-30 20:41:11,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-09-30 20:41:11,480 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 156 [2018-09-30 20:41:11,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:41:11,481 INFO L225 Difference]: With dead ends: 161 [2018-09-30 20:41:11,481 INFO L226 Difference]: Without dead ends: 159 [2018-09-30 20:41:11,482 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-09-30 20:41:11,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-09-30 20:41:11,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-09-30 20:41:11,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-09-30 20:41:11,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2018-09-30 20:41:11,484 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 156 [2018-09-30 20:41:11,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:41:11,485 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2018-09-30 20:41:11,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-09-30 20:41:11,485 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2018-09-30 20:41:11,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-09-30 20:41:11,485 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:41:11,485 INFO L375 BasicCegarLoop]: trace histogram [78, 77, 1, 1, 1] [2018-09-30 20:41:11,486 INFO L423 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:41:11,486 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:41:11,486 INFO L82 PathProgramCache]: Analyzing trace with hash 320765369, now seen corresponding path program 77 times [2018-09-30 20:41:11,486 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:41:11,486 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:41:11,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:11,487 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:41:11,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:11,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:11,929 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:41:11,930 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:41:11,930 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:41:11,937 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:41:17,792 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 78 check-sat command(s) [2018-09-30 20:41:17,792 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:41:17,798 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:41:18,063 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:41:18,087 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:41:18,088 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2018-09-30 20:41:18,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-09-30 20:41:18,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-09-30 20:41:18,089 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:41:18,089 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand 80 states. [2018-09-30 20:41:18,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:41:18,734 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2018-09-30 20:41:18,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-09-30 20:41:18,734 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 158 [2018-09-30 20:41:18,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:41:18,735 INFO L225 Difference]: With dead ends: 163 [2018-09-30 20:41:18,735 INFO L226 Difference]: Without dead ends: 161 [2018-09-30 20:41:18,735 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-09-30 20:41:18,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-09-30 20:41:18,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-09-30 20:41:18,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-09-30 20:41:18,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions. [2018-09-30 20:41:18,739 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 158 [2018-09-30 20:41:18,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:41:18,739 INFO L480 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions. [2018-09-30 20:41:18,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-09-30 20:41:18,739 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions. [2018-09-30 20:41:18,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-09-30 20:41:18,740 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:41:18,740 INFO L375 BasicCegarLoop]: trace histogram [79, 78, 1, 1, 1] [2018-09-30 20:41:18,741 INFO L423 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:41:18,741 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:41:18,741 INFO L82 PathProgramCache]: Analyzing trace with hash -982073613, now seen corresponding path program 78 times [2018-09-30 20:41:18,741 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:41:18,741 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:41:18,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:18,742 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:41:18,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:18,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:19,187 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:41:19,187 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:41:19,187 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:41:19,195 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:41:20,626 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2018-09-30 20:41:20,627 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:41:20,632 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:41:20,914 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:41:20,937 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:41:20,938 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 80 [2018-09-30 20:41:20,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-09-30 20:41:20,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-09-30 20:41:20,939 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:41:20,939 INFO L87 Difference]: Start difference. First operand 161 states and 161 transitions. Second operand 81 states. [2018-09-30 20:41:21,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:41:21,344 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2018-09-30 20:41:21,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-09-30 20:41:21,344 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 160 [2018-09-30 20:41:21,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:41:21,345 INFO L225 Difference]: With dead ends: 165 [2018-09-30 20:41:21,345 INFO L226 Difference]: Without dead ends: 163 [2018-09-30 20:41:21,345 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-09-30 20:41:21,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-09-30 20:41:21,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-09-30 20:41:21,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-09-30 20:41:21,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 163 transitions. [2018-09-30 20:41:21,350 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 163 transitions. Word has length 160 [2018-09-30 20:41:21,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:41:21,350 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 163 transitions. [2018-09-30 20:41:21,350 INFO L481 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-09-30 20:41:21,350 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 163 transitions. [2018-09-30 20:41:21,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-09-30 20:41:21,351 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:41:21,351 INFO L375 BasicCegarLoop]: trace histogram [80, 79, 1, 1, 1] [2018-09-30 20:41:21,351 INFO L423 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:41:21,352 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:41:21,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1120115117, now seen corresponding path program 79 times [2018-09-30 20:41:21,352 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:41:21,352 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:41:21,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:21,353 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:41:21,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:21,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:22,081 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:41:22,081 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:41:22,081 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:41:22,088 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:41:22,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:22,171 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:41:22,512 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:41:22,532 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:41:22,532 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2018-09-30 20:41:22,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-09-30 20:41:22,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-09-30 20:41:22,533 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:41:22,533 INFO L87 Difference]: Start difference. First operand 163 states and 163 transitions. Second operand 82 states. [2018-09-30 20:41:23,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:41:23,080 INFO L93 Difference]: Finished difference Result 167 states and 167 transitions. [2018-09-30 20:41:23,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-09-30 20:41:23,081 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 162 [2018-09-30 20:41:23,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:41:23,082 INFO L225 Difference]: With dead ends: 167 [2018-09-30 20:41:23,082 INFO L226 Difference]: Without dead ends: 165 [2018-09-30 20:41:23,082 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-09-30 20:41:23,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-09-30 20:41:23,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-09-30 20:41:23,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-09-30 20:41:23,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 165 transitions. [2018-09-30 20:41:23,085 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 165 transitions. Word has length 162 [2018-09-30 20:41:23,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:41:23,085 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 165 transitions. [2018-09-30 20:41:23,085 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-09-30 20:41:23,085 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 165 transitions. [2018-09-30 20:41:23,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-09-30 20:41:23,086 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:41:23,086 INFO L375 BasicCegarLoop]: trace histogram [81, 80, 1, 1, 1] [2018-09-30 20:41:23,086 INFO L423 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:41:23,086 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:41:23,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1606111769, now seen corresponding path program 80 times [2018-09-30 20:41:23,086 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:41:23,086 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:41:23,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:23,089 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:41:23,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:23,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:23,569 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:41:23,569 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:41:23,569 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:41:23,576 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:41:23,667 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:41:23,667 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:41:23,670 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:41:23,980 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:41:24,000 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:41:24,000 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 82 [2018-09-30 20:41:24,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-09-30 20:41:24,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-09-30 20:41:24,001 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:41:24,002 INFO L87 Difference]: Start difference. First operand 165 states and 165 transitions. Second operand 83 states. [2018-09-30 20:41:24,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:41:24,647 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-09-30 20:41:24,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-09-30 20:41:24,647 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 164 [2018-09-30 20:41:24,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:41:24,648 INFO L225 Difference]: With dead ends: 169 [2018-09-30 20:41:24,648 INFO L226 Difference]: Without dead ends: 167 [2018-09-30 20:41:24,648 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-09-30 20:41:24,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-09-30 20:41:24,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-09-30 20:41:24,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-09-30 20:41:24,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2018-09-30 20:41:24,651 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 164 [2018-09-30 20:41:24,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:41:24,651 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2018-09-30 20:41:24,651 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-09-30 20:41:24,651 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2018-09-30 20:41:24,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-09-30 20:41:24,652 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:41:24,652 INFO L375 BasicCegarLoop]: trace histogram [82, 81, 1, 1, 1] [2018-09-30 20:41:24,652 INFO L423 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:41:24,652 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:41:24,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1580098655, now seen corresponding path program 81 times [2018-09-30 20:41:24,653 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:41:24,653 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:41:24,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:24,654 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:41:24,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:24,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:25,127 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:41:25,127 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:41:25,127 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:41:25,134 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:41:27,253 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 82 check-sat command(s) [2018-09-30 20:41:27,253 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:41:27,259 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:41:27,539 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:41:27,561 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:41:27,561 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2018-09-30 20:41:27,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-09-30 20:41:27,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-09-30 20:41:27,562 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:41:27,562 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 84 states. [2018-09-30 20:41:28,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:41:28,147 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2018-09-30 20:41:28,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-09-30 20:41:28,148 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 166 [2018-09-30 20:41:28,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:41:28,148 INFO L225 Difference]: With dead ends: 171 [2018-09-30 20:41:28,149 INFO L226 Difference]: Without dead ends: 169 [2018-09-30 20:41:28,149 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-09-30 20:41:28,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-09-30 20:41:28,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-09-30 20:41:28,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-09-30 20:41:28,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 169 transitions. [2018-09-30 20:41:28,151 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 169 transitions. Word has length 166 [2018-09-30 20:41:28,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:41:28,151 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 169 transitions. [2018-09-30 20:41:28,151 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-09-30 20:41:28,152 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 169 transitions. [2018-09-30 20:41:28,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-09-30 20:41:28,152 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:41:28,152 INFO L375 BasicCegarLoop]: trace histogram [83, 82, 1, 1, 1] [2018-09-30 20:41:28,152 INFO L423 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:41:28,152 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:41:28,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1943667419, now seen corresponding path program 82 times [2018-09-30 20:41:28,153 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:41:28,153 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:41:28,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:28,153 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:41:28,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:28,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:28,651 INFO L134 CoverageAnalysis]: Checked inductivity of 6806 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:41:28,651 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:41:28,652 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:41:28,661 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:41:28,743 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:41:28,743 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:41:28,747 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:41:29,104 INFO L134 CoverageAnalysis]: Checked inductivity of 6806 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:41:29,124 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:41:29,124 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 84 [2018-09-30 20:41:29,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-09-30 20:41:29,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-09-30 20:41:29,126 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:41:29,126 INFO L87 Difference]: Start difference. First operand 169 states and 169 transitions. Second operand 85 states. [2018-09-30 20:41:29,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:41:29,582 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2018-09-30 20:41:29,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-09-30 20:41:29,583 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 168 [2018-09-30 20:41:29,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:41:29,584 INFO L225 Difference]: With dead ends: 173 [2018-09-30 20:41:29,584 INFO L226 Difference]: Without dead ends: 171 [2018-09-30 20:41:29,584 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-09-30 20:41:29,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-09-30 20:41:29,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-09-30 20:41:29,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-09-30 20:41:29,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2018-09-30 20:41:29,588 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 168 [2018-09-30 20:41:29,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:41:29,588 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2018-09-30 20:41:29,588 INFO L481 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-09-30 20:41:29,588 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2018-09-30 20:41:29,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-09-30 20:41:29,588 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:41:29,589 INFO L375 BasicCegarLoop]: trace histogram [84, 83, 1, 1, 1] [2018-09-30 20:41:29,589 INFO L423 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:41:29,589 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:41:29,589 INFO L82 PathProgramCache]: Analyzing trace with hash -446332011, now seen corresponding path program 83 times [2018-09-30 20:41:29,589 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:41:29,589 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:41:29,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:29,590 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:41:29,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:29,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:30,271 INFO L134 CoverageAnalysis]: Checked inductivity of 6972 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:41:30,271 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:41:30,271 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:41:30,281 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:41:38,028 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 84 check-sat command(s) [2018-09-30 20:41:38,028 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:41:38,036 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:41:38,315 INFO L134 CoverageAnalysis]: Checked inductivity of 6972 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:41:38,340 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:41:38,341 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2018-09-30 20:41:38,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-09-30 20:41:38,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-09-30 20:41:38,342 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:41:38,342 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 86 states. [2018-09-30 20:41:38,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:41:38,788 INFO L93 Difference]: Finished difference Result 175 states and 175 transitions. [2018-09-30 20:41:38,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-09-30 20:41:38,789 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 170 [2018-09-30 20:41:38,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:41:38,790 INFO L225 Difference]: With dead ends: 175 [2018-09-30 20:41:38,790 INFO L226 Difference]: Without dead ends: 173 [2018-09-30 20:41:38,790 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-09-30 20:41:38,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-09-30 20:41:38,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-09-30 20:41:38,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-09-30 20:41:38,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 173 transitions. [2018-09-30 20:41:38,794 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 173 transitions. Word has length 170 [2018-09-30 20:41:38,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:41:38,794 INFO L480 AbstractCegarLoop]: Abstraction has 173 states and 173 transitions. [2018-09-30 20:41:38,794 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-09-30 20:41:38,794 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 173 transitions. [2018-09-30 20:41:38,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-09-30 20:41:38,795 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:41:38,795 INFO L375 BasicCegarLoop]: trace histogram [85, 84, 1, 1, 1] [2018-09-30 20:41:38,795 INFO L423 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:41:38,795 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:41:38,795 INFO L82 PathProgramCache]: Analyzing trace with hash 571719119, now seen corresponding path program 84 times [2018-09-30 20:41:38,795 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:41:38,795 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:41:38,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:38,796 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:41:38,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:38,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:39,276 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:41:39,277 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:41:39,277 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:41:39,287 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:41:41,193 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 85 check-sat command(s) [2018-09-30 20:41:41,193 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:41:41,200 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:41:41,485 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:41:41,507 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:41:41,507 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 86 [2018-09-30 20:41:41,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-09-30 20:41:41,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-09-30 20:41:41,509 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:41:41,509 INFO L87 Difference]: Start difference. First operand 173 states and 173 transitions. Second operand 87 states. [2018-09-30 20:41:42,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:41:42,011 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-09-30 20:41:42,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-09-30 20:41:42,011 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 172 [2018-09-30 20:41:42,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:41:42,012 INFO L225 Difference]: With dead ends: 177 [2018-09-30 20:41:42,012 INFO L226 Difference]: Without dead ends: 175 [2018-09-30 20:41:42,012 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-09-30 20:41:42,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-09-30 20:41:42,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-09-30 20:41:42,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-09-30 20:41:42,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 175 transitions. [2018-09-30 20:41:42,016 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 175 transitions. Word has length 172 [2018-09-30 20:41:42,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:41:42,017 INFO L480 AbstractCegarLoop]: Abstraction has 175 states and 175 transitions. [2018-09-30 20:41:42,017 INFO L481 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-09-30 20:41:42,017 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 175 transitions. [2018-09-30 20:41:42,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-09-30 20:41:42,018 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:41:42,018 INFO L375 BasicCegarLoop]: trace histogram [86, 85, 1, 1, 1] [2018-09-30 20:41:42,018 INFO L423 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:41:42,018 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:41:42,019 INFO L82 PathProgramCache]: Analyzing trace with hash -333688439, now seen corresponding path program 85 times [2018-09-30 20:41:42,019 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:41:42,019 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:41:42,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:42,019 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:41:42,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:42,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:42,671 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:41:42,671 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:41:42,672 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:41:42,679 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:41:42,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:42,767 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:41:43,051 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:41:43,071 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:41:43,071 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2018-09-30 20:41:43,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-09-30 20:41:43,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-09-30 20:41:43,073 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:41:43,073 INFO L87 Difference]: Start difference. First operand 175 states and 175 transitions. Second operand 88 states. [2018-09-30 20:41:43,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:41:43,488 INFO L93 Difference]: Finished difference Result 179 states and 179 transitions. [2018-09-30 20:41:43,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-09-30 20:41:43,488 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 174 [2018-09-30 20:41:43,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:41:43,489 INFO L225 Difference]: With dead ends: 179 [2018-09-30 20:41:43,489 INFO L226 Difference]: Without dead ends: 177 [2018-09-30 20:41:43,490 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-09-30 20:41:43,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-09-30 20:41:43,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-09-30 20:41:43,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-09-30 20:41:43,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 177 transitions. [2018-09-30 20:41:43,493 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 177 transitions. Word has length 174 [2018-09-30 20:41:43,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:41:43,495 INFO L480 AbstractCegarLoop]: Abstraction has 177 states and 177 transitions. [2018-09-30 20:41:43,495 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-09-30 20:41:43,495 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 177 transitions. [2018-09-30 20:41:43,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-09-30 20:41:43,496 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:41:43,496 INFO L375 BasicCegarLoop]: trace histogram [87, 86, 1, 1, 1] [2018-09-30 20:41:43,496 INFO L423 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:41:43,496 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:41:43,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1448009411, now seen corresponding path program 86 times [2018-09-30 20:41:43,497 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:41:43,497 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:41:43,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:43,497 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:41:43,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:43,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:44,044 INFO L134 CoverageAnalysis]: Checked inductivity of 7482 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:41:44,045 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:41:44,045 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:41:44,052 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:41:44,138 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:41:44,138 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:41:44,142 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:41:44,434 INFO L134 CoverageAnalysis]: Checked inductivity of 7482 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:41:44,454 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:41:44,454 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 88 [2018-09-30 20:41:44,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-09-30 20:41:44,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-09-30 20:41:44,456 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:41:44,456 INFO L87 Difference]: Start difference. First operand 177 states and 177 transitions. Second operand 89 states. [2018-09-30 20:41:45,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:41:45,058 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2018-09-30 20:41:45,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-09-30 20:41:45,059 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 176 [2018-09-30 20:41:45,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:41:45,060 INFO L225 Difference]: With dead ends: 181 [2018-09-30 20:41:45,060 INFO L226 Difference]: Without dead ends: 179 [2018-09-30 20:41:45,060 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-09-30 20:41:45,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-09-30 20:41:45,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-09-30 20:41:45,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-09-30 20:41:45,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2018-09-30 20:41:45,063 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 176 [2018-09-30 20:41:45,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:41:45,063 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2018-09-30 20:41:45,063 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-09-30 20:41:45,063 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2018-09-30 20:41:45,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-09-30 20:41:45,064 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:41:45,064 INFO L375 BasicCegarLoop]: trace histogram [88, 87, 1, 1, 1] [2018-09-30 20:41:45,064 INFO L423 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:41:45,064 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:41:45,064 INFO L82 PathProgramCache]: Analyzing trace with hash -32307843, now seen corresponding path program 87 times [2018-09-30 20:41:45,064 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:41:45,064 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:41:45,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:45,065 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:41:45,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:45,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:45,563 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:41:45,563 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:41:45,563 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:41:45,571 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:41:48,330 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 88 check-sat command(s) [2018-09-30 20:41:48,330 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:41:48,337 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:41:48,652 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:41:48,675 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:41:48,675 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2018-09-30 20:41:48,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-09-30 20:41:48,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-09-30 20:41:48,676 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:41:48,676 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand 90 states. [2018-09-30 20:41:49,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:41:49,165 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2018-09-30 20:41:49,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-09-30 20:41:49,165 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 178 [2018-09-30 20:41:49,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:41:49,166 INFO L225 Difference]: With dead ends: 183 [2018-09-30 20:41:49,166 INFO L226 Difference]: Without dead ends: 181 [2018-09-30 20:41:49,166 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-09-30 20:41:49,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-09-30 20:41:49,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-09-30 20:41:49,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-09-30 20:41:49,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 181 transitions. [2018-09-30 20:41:49,170 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 181 transitions. Word has length 178 [2018-09-30 20:41:49,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:41:49,170 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 181 transitions. [2018-09-30 20:41:49,170 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-09-30 20:41:49,170 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 181 transitions. [2018-09-30 20:41:49,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-09-30 20:41:49,171 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:41:49,171 INFO L375 BasicCegarLoop]: trace histogram [89, 88, 1, 1, 1] [2018-09-30 20:41:49,171 INFO L423 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:41:49,171 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:41:49,171 INFO L82 PathProgramCache]: Analyzing trace with hash -983013961, now seen corresponding path program 88 times [2018-09-30 20:41:49,171 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:41:49,171 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:41:49,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:49,172 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:41:49,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:49,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:49,705 INFO L134 CoverageAnalysis]: Checked inductivity of 7832 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:41:49,705 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:41:49,705 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:41:49,719 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:41:49,806 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:41:49,806 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:41:49,810 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:41:50,106 INFO L134 CoverageAnalysis]: Checked inductivity of 7832 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:41:50,127 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:41:50,127 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 90 [2018-09-30 20:41:50,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-09-30 20:41:50,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-09-30 20:41:50,128 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:41:50,128 INFO L87 Difference]: Start difference. First operand 181 states and 181 transitions. Second operand 91 states. [2018-09-30 20:41:50,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:41:50,748 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2018-09-30 20:41:50,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-09-30 20:41:50,748 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 180 [2018-09-30 20:41:50,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:41:50,749 INFO L225 Difference]: With dead ends: 185 [2018-09-30 20:41:50,749 INFO L226 Difference]: Without dead ends: 183 [2018-09-30 20:41:50,749 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-09-30 20:41:50,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-09-30 20:41:50,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-09-30 20:41:50,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-09-30 20:41:50,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 183 transitions. [2018-09-30 20:41:50,752 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 183 transitions. Word has length 180 [2018-09-30 20:41:50,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:41:50,753 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 183 transitions. [2018-09-30 20:41:50,753 INFO L481 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-09-30 20:41:50,753 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 183 transitions. [2018-09-30 20:41:50,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-09-30 20:41:50,753 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:41:50,753 INFO L375 BasicCegarLoop]: trace histogram [90, 89, 1, 1, 1] [2018-09-30 20:41:50,754 INFO L423 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:41:50,754 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:41:50,754 INFO L82 PathProgramCache]: Analyzing trace with hash 216440689, now seen corresponding path program 89 times [2018-09-30 20:41:50,754 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:41:50,754 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:41:50,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:50,755 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:41:50,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:50,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:51,276 INFO L134 CoverageAnalysis]: Checked inductivity of 8010 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:41:51,276 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:41:51,276 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:41:51,284 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:42:01,608 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 90 check-sat command(s) [2018-09-30 20:42:01,608 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:42:01,617 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:42:02,000 INFO L134 CoverageAnalysis]: Checked inductivity of 8010 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:42:02,024 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:42:02,024 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2018-09-30 20:42:02,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-09-30 20:42:02,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-09-30 20:42:02,026 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:42:02,026 INFO L87 Difference]: Start difference. First operand 183 states and 183 transitions. Second operand 92 states. [2018-09-30 20:42:02,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:42:02,569 INFO L93 Difference]: Finished difference Result 187 states and 187 transitions. [2018-09-30 20:42:02,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-09-30 20:42:02,569 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 182 [2018-09-30 20:42:02,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:42:02,570 INFO L225 Difference]: With dead ends: 187 [2018-09-30 20:42:02,571 INFO L226 Difference]: Without dead ends: 185 [2018-09-30 20:42:02,571 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-09-30 20:42:02,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-09-30 20:42:02,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-09-30 20:42:02,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-09-30 20:42:02,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2018-09-30 20:42:02,574 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 182 [2018-09-30 20:42:02,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:42:02,574 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2018-09-30 20:42:02,574 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-09-30 20:42:02,574 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2018-09-30 20:42:02,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-09-30 20:42:02,575 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:42:02,575 INFO L375 BasicCegarLoop]: trace histogram [91, 90, 1, 1, 1] [2018-09-30 20:42:02,575 INFO L423 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:42:02,575 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:42:02,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1841124011, now seen corresponding path program 90 times [2018-09-30 20:42:02,576 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:42:02,576 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:42:02,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:42:02,576 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:42:02,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:42:02,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:42:03,247 INFO L134 CoverageAnalysis]: Checked inductivity of 8190 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:42:03,247 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:42:03,247 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:42:03,254 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:42:05,665 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 91 check-sat command(s) [2018-09-30 20:42:05,665 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:42:05,673 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:42:05,977 INFO L134 CoverageAnalysis]: Checked inductivity of 8190 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:42:06,000 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:42:06,000 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 92 [2018-09-30 20:42:06,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-09-30 20:42:06,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-09-30 20:42:06,002 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:42:06,002 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand 93 states. [2018-09-30 20:42:06,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:42:06,500 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2018-09-30 20:42:06,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-09-30 20:42:06,500 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 184 [2018-09-30 20:42:06,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:42:06,501 INFO L225 Difference]: With dead ends: 189 [2018-09-30 20:42:06,501 INFO L226 Difference]: Without dead ends: 187 [2018-09-30 20:42:06,501 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-09-30 20:42:06,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-09-30 20:42:06,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-09-30 20:42:06,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-09-30 20:42:06,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2018-09-30 20:42:06,506 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 184 [2018-09-30 20:42:06,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:42:06,506 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2018-09-30 20:42:06,506 INFO L481 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-09-30 20:42:06,506 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2018-09-30 20:42:06,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-09-30 20:42:06,507 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:42:06,507 INFO L375 BasicCegarLoop]: trace histogram [92, 91, 1, 1, 1] [2018-09-30 20:42:06,507 INFO L423 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:42:06,507 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:42:06,508 INFO L82 PathProgramCache]: Analyzing trace with hash -206299291, now seen corresponding path program 91 times [2018-09-30 20:42:06,508 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:42:06,508 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:42:06,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:42:06,508 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:42:06,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:42:06,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:42:07,059 INFO L134 CoverageAnalysis]: Checked inductivity of 8372 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:42:07,059 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:42:07,059 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:42:07,067 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:42:07,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:42:07,161 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:42:07,491 INFO L134 CoverageAnalysis]: Checked inductivity of 8372 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:42:07,511 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:42:07,512 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2018-09-30 20:42:07,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-09-30 20:42:07,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-09-30 20:42:07,513 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:42:07,513 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand 94 states. [2018-09-30 20:42:08,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:42:08,141 INFO L93 Difference]: Finished difference Result 191 states and 191 transitions. [2018-09-30 20:42:08,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-09-30 20:42:08,142 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 186 [2018-09-30 20:42:08,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:42:08,142 INFO L225 Difference]: With dead ends: 191 [2018-09-30 20:42:08,142 INFO L226 Difference]: Without dead ends: 189 [2018-09-30 20:42:08,143 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-09-30 20:42:08,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-09-30 20:42:08,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-09-30 20:42:08,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-09-30 20:42:08,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 189 transitions. [2018-09-30 20:42:08,147 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 189 transitions. Word has length 186 [2018-09-30 20:42:08,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:42:08,147 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 189 transitions. [2018-09-30 20:42:08,147 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-09-30 20:42:08,147 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 189 transitions. [2018-09-30 20:42:08,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-09-30 20:42:08,148 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:42:08,148 INFO L375 BasicCegarLoop]: trace histogram [93, 92, 1, 1, 1] [2018-09-30 20:42:08,148 INFO L423 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:42:08,148 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:42:08,149 INFO L82 PathProgramCache]: Analyzing trace with hash -685070945, now seen corresponding path program 92 times [2018-09-30 20:42:08,149 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:42:08,149 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:42:08,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:42:08,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:42:08,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:42:08,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:42:08,720 INFO L134 CoverageAnalysis]: Checked inductivity of 8556 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:42:08,721 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:42:08,721 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:42:08,727 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:42:08,817 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:42:08,817 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:42:08,821 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:42:09,185 INFO L134 CoverageAnalysis]: Checked inductivity of 8556 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:42:09,206 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:42:09,206 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 94 [2018-09-30 20:42:09,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-09-30 20:42:09,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-09-30 20:42:09,207 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:42:09,207 INFO L87 Difference]: Start difference. First operand 189 states and 189 transitions. Second operand 95 states. [2018-09-30 20:42:09,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:42:09,686 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2018-09-30 20:42:09,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-09-30 20:42:09,687 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 188 [2018-09-30 20:42:09,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:42:09,688 INFO L225 Difference]: With dead ends: 193 [2018-09-30 20:42:09,688 INFO L226 Difference]: Without dead ends: 191 [2018-09-30 20:42:09,688 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-09-30 20:42:09,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-09-30 20:42:09,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-09-30 20:42:09,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-09-30 20:42:09,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 191 transitions. [2018-09-30 20:42:09,691 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 191 transitions. Word has length 188 [2018-09-30 20:42:09,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:42:09,692 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 191 transitions. [2018-09-30 20:42:09,692 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-09-30 20:42:09,692 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 191 transitions. [2018-09-30 20:42:09,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-09-30 20:42:09,693 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:42:09,693 INFO L375 BasicCegarLoop]: trace histogram [94, 93, 1, 1, 1] [2018-09-30 20:42:09,693 INFO L423 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:42:09,693 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:42:09,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1223129767, now seen corresponding path program 93 times [2018-09-30 20:42:09,693 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:42:09,694 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:42:09,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:42:09,694 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:42:09,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:42:09,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:42:10,260 INFO L134 CoverageAnalysis]: Checked inductivity of 8742 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:42:10,260 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:42:10,260 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:42:10,268 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:42:13,827 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 94 check-sat command(s) [2018-09-30 20:42:13,827 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:42:13,834 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:42:14,169 INFO L134 CoverageAnalysis]: Checked inductivity of 8742 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:42:14,195 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:42:14,195 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2018-09-30 20:42:14,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-09-30 20:42:14,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-09-30 20:42:14,197 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:42:14,197 INFO L87 Difference]: Start difference. First operand 191 states and 191 transitions. Second operand 96 states. [2018-09-30 20:42:14,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:42:14,858 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-09-30 20:42:14,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-09-30 20:42:14,859 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 190 [2018-09-30 20:42:14,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:42:14,860 INFO L225 Difference]: With dead ends: 195 [2018-09-30 20:42:14,860 INFO L226 Difference]: Without dead ends: 193 [2018-09-30 20:42:14,860 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-09-30 20:42:14,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-09-30 20:42:14,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-09-30 20:42:14,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-09-30 20:42:14,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 193 transitions. [2018-09-30 20:42:14,863 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 193 transitions. Word has length 190 [2018-09-30 20:42:14,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:42:14,863 INFO L480 AbstractCegarLoop]: Abstraction has 193 states and 193 transitions. [2018-09-30 20:42:14,863 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-09-30 20:42:14,863 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 193 transitions. [2018-09-30 20:42:14,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-09-30 20:42:14,864 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:42:14,864 INFO L375 BasicCegarLoop]: trace histogram [95, 94, 1, 1, 1] [2018-09-30 20:42:14,864 INFO L423 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:42:14,864 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:42:14,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1393385107, now seen corresponding path program 94 times [2018-09-30 20:42:14,864 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:42:14,865 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:42:14,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:42:14,865 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:42:14,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:42:14,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:42:15,422 INFO L134 CoverageAnalysis]: Checked inductivity of 8930 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:42:15,422 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:42:15,422 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:42:15,431 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:42:15,524 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:42:15,524 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:42:15,528 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:42:15,846 INFO L134 CoverageAnalysis]: Checked inductivity of 8930 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:42:15,867 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:42:15,867 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 96 [2018-09-30 20:42:15,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-09-30 20:42:15,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-09-30 20:42:15,868 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:42:15,869 INFO L87 Difference]: Start difference. First operand 193 states and 193 transitions. Second operand 97 states. [2018-09-30 20:42:16,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:42:16,512 INFO L93 Difference]: Finished difference Result 197 states and 197 transitions. [2018-09-30 20:42:16,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-09-30 20:42:16,512 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 192 [2018-09-30 20:42:16,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:42:16,513 INFO L225 Difference]: With dead ends: 197 [2018-09-30 20:42:16,513 INFO L226 Difference]: Without dead ends: 195 [2018-09-30 20:42:16,513 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-09-30 20:42:16,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-09-30 20:42:16,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-09-30 20:42:16,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-09-30 20:42:16,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 195 transitions. [2018-09-30 20:42:16,516 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 195 transitions. Word has length 192 [2018-09-30 20:42:16,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:42:16,516 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 195 transitions. [2018-09-30 20:42:16,516 INFO L481 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-09-30 20:42:16,517 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 195 transitions. [2018-09-30 20:42:16,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-09-30 20:42:16,517 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:42:16,517 INFO L375 BasicCegarLoop]: trace histogram [96, 95, 1, 1, 1] [2018-09-30 20:42:16,517 INFO L423 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:42:16,518 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:42:16,518 INFO L82 PathProgramCache]: Analyzing trace with hash -986656435, now seen corresponding path program 95 times [2018-09-30 20:42:16,518 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:42:16,518 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:42:16,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:42:16,519 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:42:16,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:42:16,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:42:17,118 INFO L134 CoverageAnalysis]: Checked inductivity of 9120 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:42:17,119 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:42:17,119 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:42:17,127 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:42:30,303 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 96 check-sat command(s) [2018-09-30 20:42:30,303 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:42:30,311 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:42:30,633 INFO L134 CoverageAnalysis]: Checked inductivity of 9120 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:42:30,659 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:42:30,659 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2018-09-30 20:42:30,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-09-30 20:42:30,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-09-30 20:42:30,660 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:42:30,661 INFO L87 Difference]: Start difference. First operand 195 states and 195 transitions. Second operand 98 states. [2018-09-30 20:42:31,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:42:31,329 INFO L93 Difference]: Finished difference Result 199 states and 199 transitions. [2018-09-30 20:42:31,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-09-30 20:42:31,329 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 194 [2018-09-30 20:42:31,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:42:31,330 INFO L225 Difference]: With dead ends: 199 [2018-09-30 20:42:31,330 INFO L226 Difference]: Without dead ends: 197 [2018-09-30 20:42:31,331 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-09-30 20:42:31,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-09-30 20:42:31,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-09-30 20:42:31,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-09-30 20:42:31,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 197 transitions. [2018-09-30 20:42:31,335 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 197 transitions. Word has length 194 [2018-09-30 20:42:31,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:42:31,335 INFO L480 AbstractCegarLoop]: Abstraction has 197 states and 197 transitions. [2018-09-30 20:42:31,335 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-09-30 20:42:31,335 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 197 transitions. [2018-09-30 20:42:31,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-09-30 20:42:31,336 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:42:31,336 INFO L375 BasicCegarLoop]: trace histogram [97, 96, 1, 1, 1] [2018-09-30 20:42:31,336 INFO L423 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:42:31,337 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:42:31,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1010990471, now seen corresponding path program 96 times [2018-09-30 20:42:31,337 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:42:31,337 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:42:31,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:42:31,338 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:42:31,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:42:31,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:42:31,975 INFO L134 CoverageAnalysis]: Checked inductivity of 9312 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:42:31,975 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:42:31,975 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:42:31,983 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:42:35,024 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 97 check-sat command(s) [2018-09-30 20:42:35,025 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:42:35,033 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:42:35,358 INFO L134 CoverageAnalysis]: Checked inductivity of 9312 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:42:35,383 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:42:35,384 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 98 [2018-09-30 20:42:35,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-09-30 20:42:35,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-09-30 20:42:35,385 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:42:35,385 INFO L87 Difference]: Start difference. First operand 197 states and 197 transitions. Second operand 99 states. [2018-09-30 20:42:35,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:42:35,918 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2018-09-30 20:42:35,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-09-30 20:42:35,918 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 196 [2018-09-30 20:42:35,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:42:35,919 INFO L225 Difference]: With dead ends: 201 [2018-09-30 20:42:35,919 INFO L226 Difference]: Without dead ends: 199 [2018-09-30 20:42:35,919 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-09-30 20:42:35,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-09-30 20:42:35,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-09-30 20:42:35,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-09-30 20:42:35,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 199 transitions. [2018-09-30 20:42:35,924 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 199 transitions. Word has length 196 [2018-09-30 20:42:35,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:42:35,924 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 199 transitions. [2018-09-30 20:42:35,924 INFO L481 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-09-30 20:42:35,924 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 199 transitions. [2018-09-30 20:42:35,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-09-30 20:42:35,925 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:42:35,925 INFO L375 BasicCegarLoop]: trace histogram [98, 97, 1, 1, 1] [2018-09-30 20:42:35,925 INFO L423 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:42:35,925 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:42:35,926 INFO L82 PathProgramCache]: Analyzing trace with hash 899285825, now seen corresponding path program 97 times [2018-09-30 20:42:35,926 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:42:35,926 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:42:35,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:42:35,926 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:42:35,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:42:35,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:42:36,519 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:42:36,519 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:42:36,519 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:42:36,526 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:42:36,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:42:36,630 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:42:36,975 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:42:36,996 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:42:36,997 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2018-09-30 20:42:36,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-09-30 20:42:36,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-09-30 20:42:36,998 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:42:36,998 INFO L87 Difference]: Start difference. First operand 199 states and 199 transitions. Second operand 100 states. [2018-09-30 20:42:37,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:42:37,615 INFO L93 Difference]: Finished difference Result 203 states and 203 transitions. [2018-09-30 20:42:37,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-09-30 20:42:37,615 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 198 [2018-09-30 20:42:37,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:42:37,616 INFO L225 Difference]: With dead ends: 203 [2018-09-30 20:42:37,616 INFO L226 Difference]: Without dead ends: 201 [2018-09-30 20:42:37,616 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-09-30 20:42:37,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-09-30 20:42:37,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-09-30 20:42:37,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-09-30 20:42:37,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 201 transitions. [2018-09-30 20:42:37,620 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 201 transitions. Word has length 198 [2018-09-30 20:42:37,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:42:37,620 INFO L480 AbstractCegarLoop]: Abstraction has 201 states and 201 transitions. [2018-09-30 20:42:37,620 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-09-30 20:42:37,620 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 201 transitions. [2018-09-30 20:42:37,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-09-30 20:42:37,621 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:42:37,621 INFO L375 BasicCegarLoop]: trace histogram [99, 98, 1, 1, 1] [2018-09-30 20:42:37,621 INFO L423 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:42:37,621 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:42:37,621 INFO L82 PathProgramCache]: Analyzing trace with hash 925303419, now seen corresponding path program 98 times [2018-09-30 20:42:37,621 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:42:37,622 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:42:37,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:42:37,622 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:42:37,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:42:37,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:42:38,283 INFO L134 CoverageAnalysis]: Checked inductivity of 9702 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:42:38,283 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:42:38,283 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:42:38,290 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:42:38,392 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:42:38,393 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:42:38,399 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:42:38,894 INFO L134 CoverageAnalysis]: Checked inductivity of 9702 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:42:38,915 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:42:38,915 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 100 [2018-09-30 20:42:38,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-09-30 20:42:38,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-09-30 20:42:38,916 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:42:38,917 INFO L87 Difference]: Start difference. First operand 201 states and 201 transitions. Second operand 101 states. [2018-09-30 20:42:39,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:42:39,512 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2018-09-30 20:42:39,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-09-30 20:42:39,512 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 200 [2018-09-30 20:42:39,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:42:39,513 INFO L225 Difference]: With dead ends: 205 [2018-09-30 20:42:39,513 INFO L226 Difference]: Without dead ends: 203 [2018-09-30 20:42:39,514 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-09-30 20:42:39,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-09-30 20:42:39,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-09-30 20:42:39,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-09-30 20:42:39,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2018-09-30 20:42:39,518 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 200 [2018-09-30 20:42:39,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:42:39,518 INFO L480 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2018-09-30 20:42:39,518 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-09-30 20:42:39,518 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2018-09-30 20:42:39,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-09-30 20:42:39,519 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:42:39,519 INFO L375 BasicCegarLoop]: trace histogram [100, 99, 1, 1, 1] [2018-09-30 20:42:39,519 INFO L423 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:42:39,519 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:42:39,519 INFO L82 PathProgramCache]: Analyzing trace with hash 158407477, now seen corresponding path program 99 times [2018-09-30 20:42:39,519 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:42:39,520 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:42:39,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:42:39,520 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:42:39,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:42:39,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:42:40,172 INFO L134 CoverageAnalysis]: Checked inductivity of 9900 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:42:40,172 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:42:40,172 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:42:40,179 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:42:44,941 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 100 check-sat command(s) [2018-09-30 20:42:44,942 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:42:44,951 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:42:45,320 INFO L134 CoverageAnalysis]: Checked inductivity of 9900 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:42:45,345 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:42:45,345 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2018-09-30 20:42:45,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-09-30 20:42:45,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-09-30 20:42:45,347 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:42:45,347 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand 102 states. [2018-09-30 20:42:46,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:42:46,016 INFO L93 Difference]: Finished difference Result 207 states and 207 transitions. [2018-09-30 20:42:46,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-09-30 20:42:46,016 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 202 [2018-09-30 20:42:46,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:42:46,017 INFO L225 Difference]: With dead ends: 207 [2018-09-30 20:42:46,017 INFO L226 Difference]: Without dead ends: 205 [2018-09-30 20:42:46,017 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-09-30 20:42:46,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-09-30 20:42:46,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-09-30 20:42:46,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-09-30 20:42:46,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 205 transitions. [2018-09-30 20:42:46,020 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 205 transitions. Word has length 202 [2018-09-30 20:42:46,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:42:46,021 INFO L480 AbstractCegarLoop]: Abstraction has 205 states and 205 transitions. [2018-09-30 20:42:46,021 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-09-30 20:42:46,021 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 205 transitions. [2018-09-30 20:42:46,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-09-30 20:42:46,021 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:42:46,022 INFO L375 BasicCegarLoop]: trace histogram [101, 100, 1, 1, 1] [2018-09-30 20:42:46,022 INFO L423 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:42:46,022 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:42:46,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1905782127, now seen corresponding path program 100 times [2018-09-30 20:42:46,022 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:42:46,022 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:42:46,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:42:46,023 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:42:46,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:42:46,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:42:46,815 INFO L134 CoverageAnalysis]: Checked inductivity of 10100 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:42:46,815 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:42:46,815 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:42:46,822 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:42:46,927 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:42:46,928 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:42:46,932 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:42:47,294 INFO L134 CoverageAnalysis]: Checked inductivity of 10100 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:42:47,315 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:42:47,315 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 102 [2018-09-30 20:42:47,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-09-30 20:42:47,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-09-30 20:42:47,317 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:42:47,317 INFO L87 Difference]: Start difference. First operand 205 states and 205 transitions. Second operand 103 states. [2018-09-30 20:42:48,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:42:48,033 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2018-09-30 20:42:48,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-09-30 20:42:48,033 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 204 [2018-09-30 20:42:48,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:42:48,035 INFO L225 Difference]: With dead ends: 209 [2018-09-30 20:42:48,035 INFO L226 Difference]: Without dead ends: 207 [2018-09-30 20:42:48,035 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-09-30 20:42:48,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-09-30 20:42:48,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-09-30 20:42:48,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-09-30 20:42:48,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 207 transitions. [2018-09-30 20:42:48,039 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 207 transitions. Word has length 204 [2018-09-30 20:42:48,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:42:48,040 INFO L480 AbstractCegarLoop]: Abstraction has 207 states and 207 transitions. [2018-09-30 20:42:48,040 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-09-30 20:42:48,040 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 207 transitions. [2018-09-30 20:42:48,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-09-30 20:42:48,041 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:42:48,041 INFO L375 BasicCegarLoop]: trace histogram [102, 101, 1, 1, 1] [2018-09-30 20:42:48,041 INFO L423 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:42:48,041 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:42:48,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1800608041, now seen corresponding path program 101 times [2018-09-30 20:42:48,042 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:42:48,042 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:42:48,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:42:48,043 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:42:48,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:42:48,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:42:49,071 INFO L134 CoverageAnalysis]: Checked inductivity of 10302 backedges. 0 proven. 10302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:42:49,071 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:42:49,071 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:42:49,079 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:43:06,492 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 102 check-sat command(s) [2018-09-30 20:43:06,492 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:43:06,500 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:43:06,965 INFO L134 CoverageAnalysis]: Checked inductivity of 10302 backedges. 0 proven. 10302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:43:06,994 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:43:06,994 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 103 [2018-09-30 20:43:06,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-09-30 20:43:06,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-09-30 20:43:06,997 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:43:06,997 INFO L87 Difference]: Start difference. First operand 207 states and 207 transitions. Second operand 104 states. [2018-09-30 20:43:07,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:43:07,894 INFO L93 Difference]: Finished difference Result 211 states and 211 transitions. [2018-09-30 20:43:07,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-09-30 20:43:07,894 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 206 [2018-09-30 20:43:07,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:43:07,895 INFO L225 Difference]: With dead ends: 211 [2018-09-30 20:43:07,895 INFO L226 Difference]: Without dead ends: 209 [2018-09-30 20:43:07,895 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-09-30 20:43:07,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-09-30 20:43:07,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-09-30 20:43:07,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-09-30 20:43:07,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 209 transitions. [2018-09-30 20:43:07,899 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 209 transitions. Word has length 206 [2018-09-30 20:43:07,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:43:07,899 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 209 transitions. [2018-09-30 20:43:07,899 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-09-30 20:43:07,899 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 209 transitions. [2018-09-30 20:43:07,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-09-30 20:43:07,900 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:43:07,900 INFO L375 BasicCegarLoop]: trace histogram [103, 102, 1, 1, 1] [2018-09-30 20:43:07,900 INFO L423 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:43:07,900 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:43:07,900 INFO L82 PathProgramCache]: Analyzing trace with hash -487440797, now seen corresponding path program 102 times [2018-09-30 20:43:07,900 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:43:07,900 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:43:07,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:43:07,901 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:43:07,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:43:07,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:43:08,570 INFO L134 CoverageAnalysis]: Checked inductivity of 10506 backedges. 0 proven. 10506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:43:08,570 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:43:08,570 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:43:08,578 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:43:12,447 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 103 check-sat command(s) [2018-09-30 20:43:12,447 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:43:12,456 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:43:12,806 INFO L134 CoverageAnalysis]: Checked inductivity of 10506 backedges. 0 proven. 10506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:43:12,829 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:43:12,830 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 104 [2018-09-30 20:43:12,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-09-30 20:43:12,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-09-30 20:43:12,831 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:43:12,831 INFO L87 Difference]: Start difference. First operand 209 states and 209 transitions. Second operand 105 states. [2018-09-30 20:43:13,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:43:13,562 INFO L93 Difference]: Finished difference Result 213 states and 213 transitions. [2018-09-30 20:43:13,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-09-30 20:43:13,562 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 208 [2018-09-30 20:43:13,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:43:13,563 INFO L225 Difference]: With dead ends: 213 [2018-09-30 20:43:13,563 INFO L226 Difference]: Without dead ends: 211 [2018-09-30 20:43:13,563 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-09-30 20:43:13,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-09-30 20:43:13,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-09-30 20:43:13,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-09-30 20:43:13,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 211 transitions. [2018-09-30 20:43:13,567 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 211 transitions. Word has length 208 [2018-09-30 20:43:13,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:43:13,567 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 211 transitions. [2018-09-30 20:43:13,567 INFO L481 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-09-30 20:43:13,567 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 211 transitions. [2018-09-30 20:43:13,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-09-30 20:43:13,568 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:43:13,568 INFO L375 BasicCegarLoop]: trace histogram [104, 103, 1, 1, 1] [2018-09-30 20:43:13,569 INFO L423 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:43:13,569 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:43:13,569 INFO L82 PathProgramCache]: Analyzing trace with hash -279118563, now seen corresponding path program 103 times [2018-09-30 20:43:13,569 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:43:13,569 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:43:13,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:43:13,570 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:43:13,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:43:13,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:43:14,424 INFO L134 CoverageAnalysis]: Checked inductivity of 10712 backedges. 0 proven. 10712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:43:14,424 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:43:14,424 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:43:14,433 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:43:14,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:43:14,540 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:43:14,907 INFO L134 CoverageAnalysis]: Checked inductivity of 10712 backedges. 0 proven. 10712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:43:14,928 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:43:14,928 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 105 [2018-09-30 20:43:14,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-09-30 20:43:14,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-09-30 20:43:14,929 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:43:14,929 INFO L87 Difference]: Start difference. First operand 211 states and 211 transitions. Second operand 106 states. [2018-09-30 20:43:15,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:43:15,617 INFO L93 Difference]: Finished difference Result 215 states and 215 transitions. [2018-09-30 20:43:15,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-09-30 20:43:15,617 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 210 [2018-09-30 20:43:15,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:43:15,617 INFO L225 Difference]: With dead ends: 215 [2018-09-30 20:43:15,618 INFO L226 Difference]: Without dead ends: 213 [2018-09-30 20:43:15,618 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-09-30 20:43:15,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-09-30 20:43:15,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2018-09-30 20:43:15,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-09-30 20:43:15,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 213 transitions. [2018-09-30 20:43:15,622 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 213 transitions. Word has length 210 [2018-09-30 20:43:15,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:43:15,622 INFO L480 AbstractCegarLoop]: Abstraction has 213 states and 213 transitions. [2018-09-30 20:43:15,622 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-09-30 20:43:15,623 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 213 transitions. [2018-09-30 20:43:15,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-09-30 20:43:15,623 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:43:15,624 INFO L375 BasicCegarLoop]: trace histogram [105, 104, 1, 1, 1] [2018-09-30 20:43:15,624 INFO L423 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:43:15,624 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:43:15,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1944914601, now seen corresponding path program 104 times [2018-09-30 20:43:15,624 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:43:15,625 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:43:15,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:43:15,625 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:43:15,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:43:15,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:43:16,318 INFO L134 CoverageAnalysis]: Checked inductivity of 10920 backedges. 0 proven. 10920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:43:16,318 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:43:16,318 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:43:16,326 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:43:16,429 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:43:16,429 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:43:16,434 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:43:16,858 INFO L134 CoverageAnalysis]: Checked inductivity of 10920 backedges. 0 proven. 10920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:43:16,878 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:43:16,878 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 106 [2018-09-30 20:43:16,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-09-30 20:43:16,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-09-30 20:43:16,880 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:43:16,880 INFO L87 Difference]: Start difference. First operand 213 states and 213 transitions. Second operand 107 states. [2018-09-30 20:43:17,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:43:17,879 INFO L93 Difference]: Finished difference Result 217 states and 217 transitions. [2018-09-30 20:43:17,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-09-30 20:43:17,880 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 212 [2018-09-30 20:43:17,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:43:17,880 INFO L225 Difference]: With dead ends: 217 [2018-09-30 20:43:17,881 INFO L226 Difference]: Without dead ends: 215 [2018-09-30 20:43:17,881 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-09-30 20:43:17,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-09-30 20:43:17,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-09-30 20:43:17,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-09-30 20:43:17,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 215 transitions. [2018-09-30 20:43:17,885 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 215 transitions. Word has length 212 [2018-09-30 20:43:17,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:43:17,886 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 215 transitions. [2018-09-30 20:43:17,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-09-30 20:43:17,886 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 215 transitions. [2018-09-30 20:43:17,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-09-30 20:43:17,887 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:43:17,887 INFO L375 BasicCegarLoop]: trace histogram [106, 105, 1, 1, 1] [2018-09-30 20:43:17,887 INFO L423 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:43:17,887 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:43:17,887 INFO L82 PathProgramCache]: Analyzing trace with hash -752105711, now seen corresponding path program 105 times [2018-09-30 20:43:17,887 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:43:17,887 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:43:17,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:43:17,888 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:43:17,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:43:17,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:43:18,569 INFO L134 CoverageAnalysis]: Checked inductivity of 11130 backedges. 0 proven. 11130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:43:18,570 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:43:18,570 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:43:18,577 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:43:24,455 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 106 check-sat command(s) [2018-09-30 20:43:24,456 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:43:24,464 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:43:24,951 INFO L134 CoverageAnalysis]: Checked inductivity of 11130 backedges. 0 proven. 11130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:43:24,974 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:43:24,974 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 107 [2018-09-30 20:43:24,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-09-30 20:43:24,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-09-30 20:43:24,976 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:43:24,976 INFO L87 Difference]: Start difference. First operand 215 states and 215 transitions. Second operand 108 states. [2018-09-30 20:43:25,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:43:25,942 INFO L93 Difference]: Finished difference Result 219 states and 219 transitions. [2018-09-30 20:43:25,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-09-30 20:43:25,943 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 214 [2018-09-30 20:43:25,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:43:25,944 INFO L225 Difference]: With dead ends: 219 [2018-09-30 20:43:25,944 INFO L226 Difference]: Without dead ends: 217 [2018-09-30 20:43:25,944 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-09-30 20:43:25,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-09-30 20:43:25,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-09-30 20:43:25,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-09-30 20:43:25,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 217 transitions. [2018-09-30 20:43:25,948 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 217 transitions. Word has length 214 [2018-09-30 20:43:25,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:43:25,948 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 217 transitions. [2018-09-30 20:43:25,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-09-30 20:43:25,948 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 217 transitions. [2018-09-30 20:43:25,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-09-30 20:43:25,949 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:43:25,949 INFO L375 BasicCegarLoop]: trace histogram [107, 106, 1, 1, 1] [2018-09-30 20:43:25,949 INFO L423 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:43:25,950 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:43:25,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1219030453, now seen corresponding path program 106 times [2018-09-30 20:43:25,950 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:43:25,950 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:43:25,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:43:25,951 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:43:25,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:43:25,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:43:26,607 INFO L134 CoverageAnalysis]: Checked inductivity of 11342 backedges. 0 proven. 11342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:43:26,607 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:43:26,607 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:43:26,614 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:43:26,733 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:43:26,733 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:43:26,737 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:43:27,096 INFO L134 CoverageAnalysis]: Checked inductivity of 11342 backedges. 0 proven. 11342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:43:27,116 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:43:27,116 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 108 [2018-09-30 20:43:27,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-09-30 20:43:27,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-09-30 20:43:27,117 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:43:27,117 INFO L87 Difference]: Start difference. First operand 217 states and 217 transitions. Second operand 109 states. [2018-09-30 20:43:28,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:43:28,101 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2018-09-30 20:43:28,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-09-30 20:43:28,101 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 216 [2018-09-30 20:43:28,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:43:28,101 INFO L225 Difference]: With dead ends: 221 [2018-09-30 20:43:28,102 INFO L226 Difference]: Without dead ends: 219 [2018-09-30 20:43:28,102 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-09-30 20:43:28,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-09-30 20:43:28,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-09-30 20:43:28,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-09-30 20:43:28,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 219 transitions. [2018-09-30 20:43:28,105 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 219 transitions. Word has length 216 [2018-09-30 20:43:28,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:43:28,106 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 219 transitions. [2018-09-30 20:43:28,106 INFO L481 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-09-30 20:43:28,106 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 219 transitions. [2018-09-30 20:43:28,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-09-30 20:43:28,107 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:43:28,107 INFO L375 BasicCegarLoop]: trace histogram [108, 107, 1, 1, 1] [2018-09-30 20:43:28,107 INFO L423 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:43:28,107 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:43:28,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1037858565, now seen corresponding path program 107 times [2018-09-30 20:43:28,107 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:43:28,108 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:43:28,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:43:28,108 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:43:28,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:43:28,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:43:28,824 INFO L134 CoverageAnalysis]: Checked inductivity of 11556 backedges. 0 proven. 11556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:43:28,824 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:43:28,824 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:43:28,834 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 Received shutdown request... [2018-09-30 20:43:49,986 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 108 check-sat command(s) [2018-09-30 20:43:49,986 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:43:49,996 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:43:50,009 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-09-30 20:43:50,210 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:43:50,210 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-30 20:43:50,217 WARN L206 ceAbstractionStarter]: Timeout [2018-09-30 20:43:50,217 INFO L202 PluginConnector]: Adding new model array2.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.09 08:43:50 BoogieIcfgContainer [2018-09-30 20:43:50,217 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-30 20:43:50,218 INFO L168 Benchmark]: Toolchain (without parser) took 258335.45 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 102.8 MB). Free memory was 1.5 GB in the beginning and 911.4 MB in the end (delta: 549.5 MB). Peak memory consumption was 652.3 MB. Max. memory is 7.1 GB. [2018-09-30 20:43:50,220 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-30 20:43:50,220 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.63 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-30 20:43:50,222 INFO L168 Benchmark]: Boogie Preprocessor took 19.86 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-30 20:43:50,222 INFO L168 Benchmark]: RCFGBuilder took 287.89 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. [2018-09-30 20:43:50,223 INFO L168 Benchmark]: TraceAbstraction took 257979.57 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 102.8 MB). Free memory was 1.4 GB in the beginning and 911.4 MB in the end (delta: 528.4 MB). Peak memory consumption was 631.2 MB. Max. memory is 7.1 GB. [2018-09-30 20:43:50,226 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 41.63 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 19.86 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 287.89 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 257979.57 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 102.8 MB). Free memory was 1.4 GB in the beginning and 911.4 MB in the end (delta: 528.4 MB). Peak memory consumption was 631.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 42]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 42). Cancelled while BasicCegarLoop was analyzing trace of length 219 with TraceHistMax 108, 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, 257.9s OverallTime, 108 OverallIterations, 108 TraceHistogramMax, 41.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 428 SDtfs, 0 SDslu, 8927 SDs, 0 SdLazy, 9034 SolverSat, 194 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17545 GetRequests, 11767 SyntacticMatches, 0 SemanticMatches, 5778 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 67.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=219occurred in iteration=107, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 107 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.4s SsaConstructionTime, 112.1s SatisfiabilityAnalysisTime, 74.5s InterpolantComputationTime, 23536 NumberOfCodeBlocks, 23536 NumberOfCodeBlocksAsserted, 3040 NumberOfCheckSat, 23323 ConstructedInterpolants, 0 QuantifiedInterpolants, 10030801 SizeOfPredicates, 106 NumberOfNonLiveVariables, 41075 ConjunctsInSsa, 5883 ConjunctsInUnsatCore, 213 InterpolantComputations, 1 PerfectInterpolantSequences, 0/816624 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/array2.i_3.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-09-30_20-43-50-248.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/array2.i_3.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-30_20-43-50-248.csv Completed graceful shutdown