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-c372c2b [2018-10-02 12:08:40,182 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-02 12:08:40,187 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-02 12:08:40,200 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-02 12:08:40,200 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-02 12:08:40,201 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-02 12:08:40,202 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-02 12:08:40,204 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-02 12:08:40,206 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-02 12:08:40,207 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-02 12:08:40,208 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-02 12:08:40,232 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf [2018-10-02 12:08:40,254 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-02 12:08:40,255 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-02 12:08:40,256 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-02 12:08:40,256 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-02 12:08:40,260 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-02 12:08:40,260 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-02 12:08:40,260 INFO L133 SettingsManager]: * Use SBE=true [2018-10-02 12:08:40,260 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-02 12:08:40,260 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-02 12:08:40,261 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-02 12:08:40,261 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-02 12:08:40,261 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-02 12:08:40,261 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-02 12:08:40,262 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-02 12:08:40,263 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-02 12:08:40,263 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-02 12:08:40,263 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-02 12:08:40,263 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-02 12:08:40,265 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-02 12:08:40,265 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-02 12:08:40,265 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-02 12:08:40,265 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-02 12:08:40,265 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-02 12:08:40,266 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-02 12:08:40,266 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-02 12:08:40,266 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-02 12:08:40,266 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-02 12:08:40,267 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-02 12:08:40,267 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-02 12:08:40,267 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-02 12:08:40,267 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-02 12:08:40,324 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-02 12:08:40,340 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-02 12:08:40,346 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-02 12:08:40,348 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-02 12:08:40,348 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-02 12:08:40,349 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/array2.i_3.bpl [2018-10-02 12:08:40,349 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/array2.i_3.bpl' [2018-10-02 12:08:40,403 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-02 12:08:40,406 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-02 12:08:40,407 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-02 12:08:40,407 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-02 12:08:40,407 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-02 12:08:40,427 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 02.10 12:08:40" (1/1) ... [2018-10-02 12:08:40,442 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 02.10 12:08:40" (1/1) ... [2018-10-02 12:08:40,450 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-02 12:08:40,451 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-02 12:08:40,451 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-02 12:08:40,451 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-02 12:08:40,463 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "array2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:08:40" (1/1) ... [2018-10-02 12:08:40,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "array2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:08:40" (1/1) ... [2018-10-02 12:08:40,464 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "array2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:08:40" (1/1) ... [2018-10-02 12:08:40,464 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "array2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:08:40" (1/1) ... [2018-10-02 12:08:40,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "array2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:08:40" (1/1) ... [2018-10-02 12:08:40,469 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "array2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:08:40" (1/1) ... [2018-10-02 12:08:40,470 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "array2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:08:40" (1/1) ... [2018-10-02 12:08:40,472 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-02 12:08:40,473 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-02 12:08:40,473 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-02 12:08:40,473 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-02 12:08:40,475 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "array2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:08:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-02 12:08:40,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-02 12:08:40,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-02 12:08:40,763 INFO L340 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-02 12:08:40,764 INFO L202 PluginConnector]: Adding new model array2.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 12:08:40 BoogieIcfgContainer [2018-10-02 12:08:40,764 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-02 12:08:40,765 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-02 12:08:40,766 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-02 12:08:40,769 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-02 12:08:40,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "array2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:08:40" (1/2) ... [2018-10-02 12:08:40,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d0bab19 and model type array2.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 12:08:40, skipping insertion in model container [2018-10-02 12:08:40,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "array2.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 12:08:40" (2/2) ... [2018-10-02 12:08:40,773 INFO L112 eAbstractionObserver]: Analyzing ICFG array2.i_3.bpl [2018-10-02 12:08:40,783 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-02 12:08:40,790 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-02 12:08:40,842 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-02 12:08:40,843 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-02 12:08:40,843 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-02 12:08:40,843 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-02 12:08:40,843 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-02 12:08:40,844 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-02 12:08:40,844 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-02 12:08:40,844 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-02 12:08:40,844 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-02 12:08:40,860 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2018-10-02 12:08:40,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-10-02 12:08:40,866 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:40,868 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-10-02 12:08:40,869 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:40,875 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:40,875 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, now seen corresponding path program 1 times [2018-10-02 12:08:40,878 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:40,878 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:40,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:40,924 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:08:40,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:40,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:41,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:41,029 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-02 12:08:41,030 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-02 12:08:41,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-02 12:08:41,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-02 12:08:41,052 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:41,054 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2018-10-02 12:08:41,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:41,190 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-10-02 12:08:41,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-02 12:08:41,193 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-10-02 12:08:41,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:41,210 INFO L225 Difference]: With dead ends: 11 [2018-10-02 12:08:41,211 INFO L226 Difference]: Without dead ends: 7 [2018-10-02 12:08:41,215 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:08:41,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-10-02 12:08:41,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-10-02 12:08:41,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-10-02 12:08:41,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-10-02 12:08:41,268 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-10-02 12:08:41,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:41,268 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-10-02 12:08:41,268 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-02 12:08:41,268 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-10-02 12:08:41,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-02 12:08:41,269 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:41,269 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-10-02 12:08:41,270 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:41,270 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:41,270 INFO L82 PathProgramCache]: Analyzing trace with hash 889591169, now seen corresponding path program 1 times [2018-10-02 12:08:41,270 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:41,270 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:41,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:41,272 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:08:41,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:41,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:41,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:41,360 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:41,361 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:41,373 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:08:41,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:41,397 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:41,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:41,530 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:41,531 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-10-02 12:08:41,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-02 12:08:41,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-02 12:08:41,532 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:41,532 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 4 states. [2018-10-02 12:08:41,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:41,617 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-10-02 12:08:41,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-02 12:08:41,618 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-10-02 12:08:41,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:41,619 INFO L225 Difference]: With dead ends: 11 [2018-10-02 12:08:41,619 INFO L226 Difference]: Without dead ends: 9 [2018-10-02 12:08:41,620 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:08:41,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-10-02 12:08:41,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-10-02 12:08:41,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-02 12:08:41,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-10-02 12:08:41,625 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2018-10-02 12:08:41,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:41,625 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-10-02 12:08:41,625 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-02 12:08:41,626 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-10-02 12:08:41,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-02 12:08:41,626 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:41,626 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2018-10-02 12:08:41,627 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:41,627 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:41,627 INFO L82 PathProgramCache]: Analyzing trace with hash 198673595, now seen corresponding path program 2 times [2018-10-02 12:08:41,627 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:41,627 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:41,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:41,629 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:08:41,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:41,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:41,723 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:41,724 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:41,724 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:41,742 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:08:41,784 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:08:41,784 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:41,786 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:41,845 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:41,865 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:41,866 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-02 12:08:41,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-02 12:08:41,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-02 12:08:41,866 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:41,867 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-10-02 12:08:42,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:42,131 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-10-02 12:08:42,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-02 12:08:42,132 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2018-10-02 12:08:42,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:42,133 INFO L225 Difference]: With dead ends: 13 [2018-10-02 12:08:42,133 INFO L226 Difference]: Without dead ends: 11 [2018-10-02 12:08:42,134 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:08:42,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-02 12:08:42,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-02 12:08:42,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-02 12:08:42,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-10-02 12:08:42,139 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-10-02 12:08:42,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:42,139 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-10-02 12:08:42,139 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-02 12:08:42,140 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-10-02 12:08:42,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-02 12:08:42,140 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:42,140 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1] [2018-10-02 12:08:42,141 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:42,141 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:42,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1946815861, now seen corresponding path program 3 times [2018-10-02 12:08:42,141 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:42,142 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:42,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:42,143 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:42,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:42,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:42,267 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:42,268 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:42,268 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:42,286 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:08:42,336 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-02 12:08:42,337 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:42,338 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:42,387 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:42,409 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:42,409 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-02 12:08:42,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-02 12:08:42,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-02 12:08:42,410 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:42,411 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 6 states. [2018-10-02 12:08:42,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:42,486 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-10-02 12:08:42,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-02 12:08:42,489 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2018-10-02 12:08:42,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:42,490 INFO L225 Difference]: With dead ends: 15 [2018-10-02 12:08:42,490 INFO L226 Difference]: Without dead ends: 13 [2018-10-02 12:08:42,491 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:08:42,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-02 12:08:42,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-02 12:08:42,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-02 12:08:42,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-10-02 12:08:42,494 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-10-02 12:08:42,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:42,495 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-10-02 12:08:42,495 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-02 12:08:42,495 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-10-02 12:08:42,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-02 12:08:42,496 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:42,496 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1] [2018-10-02 12:08:42,496 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:42,496 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:42,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1715646545, now seen corresponding path program 4 times [2018-10-02 12:08:42,497 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:42,497 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:42,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:42,498 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:42,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:42,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:42,673 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:42,674 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:42,674 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:42,683 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:08:42,721 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:08:42,722 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:42,724 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:42,790 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:42,811 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:42,811 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-02 12:08:42,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-02 12:08:42,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-02 12:08:42,812 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:42,812 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 7 states. [2018-10-02 12:08:42,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:42,880 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-10-02 12:08:42,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-02 12:08:42,881 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2018-10-02 12:08:42,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:42,881 INFO L225 Difference]: With dead ends: 17 [2018-10-02 12:08:42,882 INFO L226 Difference]: Without dead ends: 15 [2018-10-02 12:08:42,882 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:08:42,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-02 12:08:42,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-10-02 12:08:42,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-02 12:08:42,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-10-02 12:08:42,886 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-10-02 12:08:42,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:42,886 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-10-02 12:08:42,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-02 12:08:42,886 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-10-02 12:08:42,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-02 12:08:42,887 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:42,887 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1] [2018-10-02 12:08:42,887 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:42,888 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:42,888 INFO L82 PathProgramCache]: Analyzing trace with hash 531164009, now seen corresponding path program 5 times [2018-10-02 12:08:42,888 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:42,888 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:42,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:42,889 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:42,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:42,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:43,046 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:43,046 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:43,047 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:43,061 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:08:43,160 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-10-02 12:08:43,161 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:43,165 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:43,517 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:43,538 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:43,539 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-02 12:08:43,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-02 12:08:43,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-02 12:08:43,539 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:43,540 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 8 states. [2018-10-02 12:08:43,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:43,604 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-10-02 12:08:43,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-02 12:08:43,605 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-10-02 12:08:43,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:43,605 INFO L225 Difference]: With dead ends: 19 [2018-10-02 12:08:43,606 INFO L226 Difference]: Without dead ends: 17 [2018-10-02 12:08:43,606 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.0s impTime [2018-10-02 12:08:43,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-10-02 12:08:43,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-10-02 12:08:43,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-02 12:08:43,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-10-02 12:08:43,610 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2018-10-02 12:08:43,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:43,610 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-10-02 12:08:43,611 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-02 12:08:43,611 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-10-02 12:08:43,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-02 12:08:43,611 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:43,612 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1] [2018-10-02 12:08:43,612 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:43,612 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:43,612 INFO L82 PathProgramCache]: Analyzing trace with hash -652443485, now seen corresponding path program 6 times [2018-10-02 12:08:43,612 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:43,613 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:43,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:43,614 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:43,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:43,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:43,729 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:43,730 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:43,730 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:43,743 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:08:43,760 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-02 12:08:43,760 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:43,763 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:43,857 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:43,879 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:43,879 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:08:43,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:08:43,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:08:43,880 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:43,880 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 9 states. [2018-10-02 12:08:44,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:44,015 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-10-02 12:08:44,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:08:44,016 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-10-02 12:08:44,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:44,017 INFO L225 Difference]: With dead ends: 21 [2018-10-02 12:08:44,017 INFO L226 Difference]: Without dead ends: 19 [2018-10-02 12:08:44,017 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:08:44,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-02 12:08:44,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-02 12:08:44,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-02 12:08:44,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-10-02 12:08:44,022 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2018-10-02 12:08:44,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:44,022 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-10-02 12:08:44,023 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:08:44,023 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-10-02 12:08:44,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-02 12:08:44,024 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:44,024 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1] [2018-10-02 12:08:44,025 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:44,025 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:44,025 INFO L82 PathProgramCache]: Analyzing trace with hash 67088221, now seen corresponding path program 7 times [2018-10-02 12:08:44,025 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:44,025 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:44,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:44,027 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:44,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:44,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:44,336 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:44,336 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:44,336 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:44,345 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:08:44,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:44,360 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:44,474 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:44,499 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:44,499 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:08:44,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:08:44,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:08:44,500 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:44,500 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 10 states. [2018-10-02 12:08:44,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:44,579 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-10-02 12:08:44,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:08:44,580 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2018-10-02 12:08:44,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:44,581 INFO L225 Difference]: With dead ends: 23 [2018-10-02 12:08:44,581 INFO L226 Difference]: Without dead ends: 21 [2018-10-02 12:08:44,582 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime [2018-10-02 12:08:44,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-02 12:08:44,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-02 12:08:44,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-02 12:08:44,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-10-02 12:08:44,586 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2018-10-02 12:08:44,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:44,587 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-10-02 12:08:44,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:08:44,588 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-10-02 12:08:44,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-02 12:08:44,588 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:44,588 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1] [2018-10-02 12:08:44,589 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:44,589 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:44,589 INFO L82 PathProgramCache]: Analyzing trace with hash 47323031, now seen corresponding path program 8 times [2018-10-02 12:08:44,589 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:44,589 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:44,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:44,590 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:08:44,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:44,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:44,754 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:44,755 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:44,755 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:44,773 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:08:44,792 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:08:44,792 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:44,794 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:44,867 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:44,890 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:44,890 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:08:44,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:08:44,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:08:44,891 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:44,891 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 11 states. [2018-10-02 12:08:44,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:44,992 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-10-02 12:08:44,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:08:44,996 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2018-10-02 12:08:44,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:44,997 INFO L225 Difference]: With dead ends: 25 [2018-10-02 12:08:44,997 INFO L226 Difference]: Without dead ends: 23 [2018-10-02 12:08:44,997 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:08:44,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-02 12:08:45,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-02 12:08:45,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-02 12:08:45,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-10-02 12:08:45,001 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 20 [2018-10-02 12:08:45,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:45,002 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-10-02 12:08:45,002 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:08:45,002 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-10-02 12:08:45,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-02 12:08:45,004 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:45,004 INFO L375 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1] [2018-10-02 12:08:45,004 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:45,004 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:45,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1767155375, now seen corresponding path program 9 times [2018-10-02 12:08:45,005 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:45,005 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:45,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:45,006 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:45,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:45,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:45,142 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:45,143 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:45,143 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:45,155 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:08:45,177 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-10-02 12:08:45,177 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:45,179 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:45,245 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:45,266 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:45,266 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-10-02 12:08:45,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-02 12:08:45,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-02 12:08:45,267 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:45,267 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 12 states. [2018-10-02 12:08:45,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:45,359 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-10-02 12:08:45,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-02 12:08:45,361 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2018-10-02 12:08:45,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:45,362 INFO L225 Difference]: With dead ends: 27 [2018-10-02 12:08:45,362 INFO L226 Difference]: Without dead ends: 25 [2018-10-02 12:08:45,362 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:08:45,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-02 12:08:45,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-10-02 12:08:45,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-02 12:08:45,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-10-02 12:08:45,367 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2018-10-02 12:08:45,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:45,367 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-10-02 12:08:45,367 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-02 12:08:45,367 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-10-02 12:08:45,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-02 12:08:45,368 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:45,368 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1] [2018-10-02 12:08:45,368 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:45,368 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:45,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1724181365, now seen corresponding path program 10 times [2018-10-02 12:08:45,369 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:45,369 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:45,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:45,370 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:45,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:45,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:45,571 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:45,571 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:45,571 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:45,587 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:08:45,614 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:08:45,615 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:45,617 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:45,697 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:45,719 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:45,719 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-10-02 12:08:45,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-02 12:08:45,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-02 12:08:45,720 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:45,720 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 13 states. [2018-10-02 12:08:45,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:45,794 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-10-02 12:08:45,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-02 12:08:45,795 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 24 [2018-10-02 12:08:45,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:45,796 INFO L225 Difference]: With dead ends: 29 [2018-10-02 12:08:45,797 INFO L226 Difference]: Without dead ends: 27 [2018-10-02 12:08:45,797 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime [2018-10-02 12:08:45,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-02 12:08:45,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-10-02 12:08:45,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-10-02 12:08:45,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-10-02 12:08:45,802 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 24 [2018-10-02 12:08:45,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:45,803 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-10-02 12:08:45,803 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-02 12:08:45,803 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-10-02 12:08:45,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-02 12:08:45,804 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:45,804 INFO L375 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1] [2018-10-02 12:08:45,805 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:45,805 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:45,805 INFO L82 PathProgramCache]: Analyzing trace with hash 919136581, now seen corresponding path program 11 times [2018-10-02 12:08:45,805 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:45,805 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:45,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:45,806 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:45,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:45,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:45,937 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:45,938 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:45,938 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:45,946 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:08:45,985 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-10-02 12:08:45,986 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:45,989 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:46,063 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:46,092 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:46,092 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-10-02 12:08:46,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-02 12:08:46,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-02 12:08:46,093 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:46,093 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 14 states. [2018-10-02 12:08:46,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:46,372 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-10-02 12:08:46,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-02 12:08:46,374 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 26 [2018-10-02 12:08:46,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:46,375 INFO L225 Difference]: With dead ends: 31 [2018-10-02 12:08:46,375 INFO L226 Difference]: Without dead ends: 29 [2018-10-02 12:08:46,375 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:08:46,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-02 12:08:46,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-10-02 12:08:46,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-10-02 12:08:46,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-10-02 12:08:46,380 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 26 [2018-10-02 12:08:46,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:46,380 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-10-02 12:08:46,380 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-02 12:08:46,380 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-10-02 12:08:46,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-02 12:08:46,381 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:46,381 INFO L375 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1] [2018-10-02 12:08:46,381 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:46,382 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:46,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1472956545, now seen corresponding path program 12 times [2018-10-02 12:08:46,382 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:46,382 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:46,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:46,383 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:46,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:46,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:46,558 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:46,558 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:46,558 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:46,566 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:08:46,745 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-10-02 12:08:46,745 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:46,748 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:47,025 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:47,046 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:47,047 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-10-02 12:08:47,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-02 12:08:47,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-02 12:08:47,048 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:47,048 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 15 states. [2018-10-02 12:08:47,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:47,148 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-10-02 12:08:47,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-02 12:08:47,151 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 28 [2018-10-02 12:08:47,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:47,153 INFO L225 Difference]: With dead ends: 33 [2018-10-02 12:08:47,154 INFO L226 Difference]: Without dead ends: 31 [2018-10-02 12:08:47,154 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.0s impTime [2018-10-02 12:08:47,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-02 12:08:47,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-02 12:08:47,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-02 12:08:47,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-10-02 12:08:47,159 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 28 [2018-10-02 12:08:47,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:47,160 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-10-02 12:08:47,160 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-02 12:08:47,160 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-10-02 12:08:47,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-02 12:08:47,161 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:47,161 INFO L375 BasicCegarLoop]: trace histogram [14, 13, 1, 1, 1] [2018-10-02 12:08:47,161 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:47,161 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:47,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1828020025, now seen corresponding path program 13 times [2018-10-02 12:08:47,162 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:47,162 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:47,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:47,163 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:47,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:47,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:47,409 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:47,410 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:47,410 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:47,420 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:08:47,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:47,440 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:47,548 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:47,571 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:47,571 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-10-02 12:08:47,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-02 12:08:47,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-02 12:08:47,572 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:47,572 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 16 states. [2018-10-02 12:08:47,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:47,725 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-10-02 12:08:47,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-02 12:08:47,726 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 30 [2018-10-02 12:08:47,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:47,727 INFO L225 Difference]: With dead ends: 35 [2018-10-02 12:08:47,727 INFO L226 Difference]: Without dead ends: 33 [2018-10-02 12:08:47,727 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime [2018-10-02 12:08:47,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-02 12:08:47,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-10-02 12:08:47,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-02 12:08:47,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-10-02 12:08:47,731 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 30 [2018-10-02 12:08:47,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:47,732 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-10-02 12:08:47,732 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-02 12:08:47,732 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-10-02 12:08:47,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-02 12:08:47,733 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:47,733 INFO L375 BasicCegarLoop]: trace histogram [15, 14, 1, 1, 1] [2018-10-02 12:08:47,733 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:47,733 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:47,734 INFO L82 PathProgramCache]: Analyzing trace with hash 85672051, now seen corresponding path program 14 times [2018-10-02 12:08:47,734 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:47,734 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:47,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:47,735 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:08:47,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:47,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:48,112 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:48,112 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:48,113 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:48,123 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:08:48,173 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:08:48,173 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:48,175 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:48,344 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:48,366 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:48,366 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-10-02 12:08:48,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-02 12:08:48,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-02 12:08:48,367 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:48,367 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 17 states. [2018-10-02 12:08:48,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:48,503 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-10-02 12:08:48,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-02 12:08:48,503 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 32 [2018-10-02 12:08:48,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:48,504 INFO L225 Difference]: With dead ends: 37 [2018-10-02 12:08:48,505 INFO L226 Difference]: Without dead ends: 35 [2018-10-02 12:08:48,505 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime [2018-10-02 12:08:48,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-02 12:08:48,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-10-02 12:08:48,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-02 12:08:48,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-10-02 12:08:48,511 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 32 [2018-10-02 12:08:48,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:48,511 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-10-02 12:08:48,511 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-02 12:08:48,511 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-10-02 12:08:48,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-02 12:08:48,512 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:48,512 INFO L375 BasicCegarLoop]: trace histogram [16, 15, 1, 1, 1] [2018-10-02 12:08:48,512 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:48,513 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:48,513 INFO L82 PathProgramCache]: Analyzing trace with hash 726514477, now seen corresponding path program 15 times [2018-10-02 12:08:48,513 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:48,513 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:48,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:48,514 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:48,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:48,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:48,809 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:48,810 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:48,810 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:48,819 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:08:48,858 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-10-02 12:08:48,859 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:48,862 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:49,182 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:49,201 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:49,201 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-10-02 12:08:49,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-02 12:08:49,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-02 12:08:49,202 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:49,202 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 18 states. [2018-10-02 12:08:49,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:49,435 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-10-02 12:08:49,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-02 12:08:49,436 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 34 [2018-10-02 12:08:49,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:49,437 INFO L225 Difference]: With dead ends: 39 [2018-10-02 12:08:49,437 INFO L226 Difference]: Without dead ends: 37 [2018-10-02 12:08:49,437 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.1s impTime [2018-10-02 12:08:49,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-02 12:08:49,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-10-02 12:08:49,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-02 12:08:49,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-10-02 12:08:49,441 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 34 [2018-10-02 12:08:49,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:49,442 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-10-02 12:08:49,442 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-02 12:08:49,442 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-10-02 12:08:49,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-02 12:08:49,443 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:49,443 INFO L375 BasicCegarLoop]: trace histogram [17, 16, 1, 1, 1] [2018-10-02 12:08:49,443 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:49,443 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:49,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1899204761, now seen corresponding path program 16 times [2018-10-02 12:08:49,443 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:49,443 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:49,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:49,444 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:49,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:49,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:50,368 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:50,368 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:50,368 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:50,377 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:08:50,405 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:08:50,406 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:50,408 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:50,572 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:50,593 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:50,593 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-10-02 12:08:50,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-02 12:08:50,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-02 12:08:50,594 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:50,594 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 19 states. [2018-10-02 12:08:50,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:50,779 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-10-02 12:08:50,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-02 12:08:50,779 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 36 [2018-10-02 12:08:50,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:50,780 INFO L225 Difference]: With dead ends: 41 [2018-10-02 12:08:50,780 INFO L226 Difference]: Without dead ends: 39 [2018-10-02 12:08:50,781 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.6s impTime [2018-10-02 12:08:50,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-02 12:08:50,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-10-02 12:08:50,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-02 12:08:50,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-10-02 12:08:50,786 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 36 [2018-10-02 12:08:50,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:50,787 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-10-02 12:08:50,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-02 12:08:50,787 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-10-02 12:08:50,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-02 12:08:50,788 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:50,788 INFO L375 BasicCegarLoop]: trace histogram [18, 17, 1, 1, 1] [2018-10-02 12:08:50,788 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:50,788 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:50,788 INFO L82 PathProgramCache]: Analyzing trace with hash 225377569, now seen corresponding path program 17 times [2018-10-02 12:08:50,788 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:50,789 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:50,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:50,789 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:50,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:50,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:51,069 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:51,070 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:51,070 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:51,081 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:08:51,134 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-10-02 12:08:51,134 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:51,137 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:51,417 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:51,438 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:51,439 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-10-02 12:08:51,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-02 12:08:51,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-02 12:08:51,440 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:51,440 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 20 states. [2018-10-02 12:08:51,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:51,561 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-10-02 12:08:51,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-02 12:08:51,561 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 38 [2018-10-02 12:08:51,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:51,561 INFO L225 Difference]: With dead ends: 43 [2018-10-02 12:08:51,562 INFO L226 Difference]: Without dead ends: 41 [2018-10-02 12:08:51,562 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.1s impTime [2018-10-02 12:08:51,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-02 12:08:51,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-10-02 12:08:51,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-02 12:08:51,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-10-02 12:08:51,567 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 38 [2018-10-02 12:08:51,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:51,567 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-10-02 12:08:51,567 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-02 12:08:51,567 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-10-02 12:08:51,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-02 12:08:51,568 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:51,568 INFO L375 BasicCegarLoop]: trace histogram [19, 18, 1, 1, 1] [2018-10-02 12:08:51,568 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:51,568 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:51,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1839531099, now seen corresponding path program 18 times [2018-10-02 12:08:51,569 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:51,569 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:51,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:51,570 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:51,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:51,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:52,522 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:52,522 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:52,523 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:52,531 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:08:52,603 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-10-02 12:08:52,603 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:52,606 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:53,042 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:53,078 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:53,078 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-10-02 12:08:53,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-02 12:08:53,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-02 12:08:53,079 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:53,079 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 21 states. [2018-10-02 12:08:53,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:53,352 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-10-02 12:08:53,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-02 12:08:53,352 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 40 [2018-10-02 12:08:53,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:53,353 INFO L225 Difference]: With dead ends: 45 [2018-10-02 12:08:53,353 INFO L226 Difference]: Without dead ends: 43 [2018-10-02 12:08:53,354 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.6s impTime [2018-10-02 12:08:53,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-02 12:08:53,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-10-02 12:08:53,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-02 12:08:53,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-10-02 12:08:53,358 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 40 [2018-10-02 12:08:53,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:53,358 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-10-02 12:08:53,358 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-02 12:08:53,358 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-10-02 12:08:53,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-02 12:08:53,359 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:53,359 INFO L375 BasicCegarLoop]: trace histogram [20, 19, 1, 1, 1] [2018-10-02 12:08:53,359 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:53,360 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:53,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1737087723, now seen corresponding path program 19 times [2018-10-02 12:08:53,360 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:53,360 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:53,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:53,361 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:53,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:53,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:53,661 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:53,662 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:53,662 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:53,670 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:08:53,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:53,690 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:53,769 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:53,791 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:53,791 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-10-02 12:08:53,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-02 12:08:53,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-02 12:08:53,792 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:53,792 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 22 states. [2018-10-02 12:08:53,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:53,946 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-10-02 12:08:53,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-02 12:08:53,947 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 42 [2018-10-02 12:08:53,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:53,948 INFO L225 Difference]: With dead ends: 47 [2018-10-02 12:08:53,948 INFO L226 Difference]: Without dead ends: 45 [2018-10-02 12:08:53,948 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime [2018-10-02 12:08:53,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-02 12:08:53,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-10-02 12:08:53,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-02 12:08:53,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-10-02 12:08:53,954 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 42 [2018-10-02 12:08:53,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:53,955 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-10-02 12:08:53,955 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-02 12:08:53,955 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-10-02 12:08:53,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-02 12:08:53,956 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:53,956 INFO L375 BasicCegarLoop]: trace histogram [21, 20, 1, 1, 1] [2018-10-02 12:08:53,956 INFO L423 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:53,956 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:53,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1401028431, now seen corresponding path program 20 times [2018-10-02 12:08:53,957 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:53,957 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:53,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:53,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:08:53,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:53,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:54,362 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:54,362 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:54,362 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:54,376 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:08:54,400 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:08:54,400 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:54,404 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:54,593 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:54,613 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:54,613 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-10-02 12:08:54,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-02 12:08:54,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-02 12:08:54,614 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:54,614 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 23 states. [2018-10-02 12:08:54,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:54,842 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-10-02 12:08:54,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-02 12:08:54,843 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 44 [2018-10-02 12:08:54,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:54,843 INFO L225 Difference]: With dead ends: 49 [2018-10-02 12:08:54,844 INFO L226 Difference]: Without dead ends: 47 [2018-10-02 12:08:54,844 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.2s impTime [2018-10-02 12:08:54,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-02 12:08:54,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-02 12:08:54,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-02 12:08:54,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-10-02 12:08:54,848 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 44 [2018-10-02 12:08:54,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:54,848 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-10-02 12:08:54,849 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-02 12:08:54,849 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-10-02 12:08:54,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-02 12:08:54,849 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:54,849 INFO L375 BasicCegarLoop]: trace histogram [22, 21, 1, 1, 1] [2018-10-02 12:08:54,850 INFO L423 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:54,850 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:54,850 INFO L82 PathProgramCache]: Analyzing trace with hash 2063610633, now seen corresponding path program 21 times [2018-10-02 12:08:54,850 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:54,850 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:54,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:54,851 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:54,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:54,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:55,160 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:55,161 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:55,161 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:55,169 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:08:55,227 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-10-02 12:08:55,227 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:55,230 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:55,333 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:55,354 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:55,354 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-10-02 12:08:55,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-02 12:08:55,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-02 12:08:55,355 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:55,355 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 24 states. [2018-10-02 12:08:55,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:55,486 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-10-02 12:08:55,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-02 12:08:55,488 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 46 [2018-10-02 12:08:55,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:55,489 INFO L225 Difference]: With dead ends: 51 [2018-10-02 12:08:55,489 INFO L226 Difference]: Without dead ends: 49 [2018-10-02 12:08:55,490 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.2s impTime [2018-10-02 12:08:55,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-02 12:08:55,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-10-02 12:08:55,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-02 12:08:55,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-10-02 12:08:55,493 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 46 [2018-10-02 12:08:55,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:55,493 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-10-02 12:08:55,493 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-02 12:08:55,493 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-10-02 12:08:55,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-02 12:08:55,494 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:55,494 INFO L375 BasicCegarLoop]: trace histogram [23, 22, 1, 1, 1] [2018-10-02 12:08:55,494 INFO L423 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:55,495 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:55,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1145020349, now seen corresponding path program 22 times [2018-10-02 12:08:55,495 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:55,495 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:55,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:55,496 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:55,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:55,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:55,785 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:55,785 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:55,785 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:55,793 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:08:55,820 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:08:55,820 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:55,822 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:55,928 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:55,949 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:55,949 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-10-02 12:08:55,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-02 12:08:55,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-02 12:08:55,950 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:55,950 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 25 states. [2018-10-02 12:08:56,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:56,078 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-10-02 12:08:56,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-02 12:08:56,079 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 48 [2018-10-02 12:08:56,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:56,080 INFO L225 Difference]: With dead ends: 53 [2018-10-02 12:08:56,080 INFO L226 Difference]: Without dead ends: 51 [2018-10-02 12:08:56,080 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime [2018-10-02 12:08:56,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-02 12:08:56,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-02 12:08:56,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-02 12:08:56,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-10-02 12:08:56,085 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 48 [2018-10-02 12:08:56,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:56,085 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-10-02 12:08:56,085 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-02 12:08:56,085 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-10-02 12:08:56,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-02 12:08:56,086 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:56,086 INFO L375 BasicCegarLoop]: trace histogram [24, 23, 1, 1, 1] [2018-10-02 12:08:56,087 INFO L423 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:56,088 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:56,088 INFO L82 PathProgramCache]: Analyzing trace with hash -852875523, now seen corresponding path program 23 times [2018-10-02 12:08:56,088 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:56,088 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:56,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:56,089 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:56,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:56,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:56,842 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:56,842 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:56,842 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:56,849 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:08:56,950 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-10-02 12:08:56,950 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:56,953 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:57,091 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:57,112 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:57,112 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-10-02 12:08:57,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-02 12:08:57,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-02 12:08:57,113 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:57,113 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 26 states. [2018-10-02 12:08:57,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:57,210 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-10-02 12:08:57,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-02 12:08:57,211 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 50 [2018-10-02 12:08:57,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:57,211 INFO L225 Difference]: With dead ends: 55 [2018-10-02 12:08:57,212 INFO L226 Difference]: Without dead ends: 53 [2018-10-02 12:08:57,212 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.5s impTime [2018-10-02 12:08:57,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-02 12:08:57,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-10-02 12:08:57,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-10-02 12:08:57,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-10-02 12:08:57,216 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 50 [2018-10-02 12:08:57,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:57,216 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-10-02 12:08:57,216 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-02 12:08:57,216 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-10-02 12:08:57,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-02 12:08:57,216 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:57,217 INFO L375 BasicCegarLoop]: trace histogram [25, 24, 1, 1, 1] [2018-10-02 12:08:57,217 INFO L423 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:57,217 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:57,217 INFO L82 PathProgramCache]: Analyzing trace with hash 725428023, now seen corresponding path program 24 times [2018-10-02 12:08:57,217 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:57,217 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:57,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:57,218 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:57,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:57,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:57,487 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:57,487 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:57,487 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:57,494 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:08:57,564 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-10-02 12:08:57,565 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:57,566 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:57,709 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:57,730 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:57,730 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-10-02 12:08:57,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-02 12:08:57,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-02 12:08:57,731 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:57,731 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 27 states. [2018-10-02 12:08:57,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:57,860 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-10-02 12:08:57,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-02 12:08:57,860 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 52 [2018-10-02 12:08:57,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:57,861 INFO L225 Difference]: With dead ends: 57 [2018-10-02 12:08:57,861 INFO L226 Difference]: Without dead ends: 55 [2018-10-02 12:08:57,862 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime [2018-10-02 12:08:57,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-02 12:08:57,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-10-02 12:08:57,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-02 12:08:57,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-10-02 12:08:57,866 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 52 [2018-10-02 12:08:57,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:57,866 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-10-02 12:08:57,866 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-02 12:08:57,866 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-10-02 12:08:57,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-02 12:08:57,867 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:57,867 INFO L375 BasicCegarLoop]: trace histogram [26, 25, 1, 1, 1] [2018-10-02 12:08:57,867 INFO L423 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:57,867 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:57,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1351680241, now seen corresponding path program 25 times [2018-10-02 12:08:57,868 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:57,868 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:57,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:57,868 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:57,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:57,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:58,295 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:58,296 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:58,296 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:58,305 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:08:58,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:58,335 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:58,428 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:58,448 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:58,448 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-10-02 12:08:58,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-02 12:08:58,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-02 12:08:58,449 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:58,449 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 28 states. [2018-10-02 12:08:58,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:58,608 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-10-02 12:08:58,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-02 12:08:58,608 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 54 [2018-10-02 12:08:58,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:58,609 INFO L225 Difference]: With dead ends: 59 [2018-10-02 12:08:58,609 INFO L226 Difference]: Without dead ends: 57 [2018-10-02 12:08:58,610 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.3s impTime [2018-10-02 12:08:58,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-02 12:08:58,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-10-02 12:08:58,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-02 12:08:58,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-10-02 12:08:58,614 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 54 [2018-10-02 12:08:58,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:58,614 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-10-02 12:08:58,614 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-02 12:08:58,614 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-10-02 12:08:58,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-02 12:08:58,615 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:58,615 INFO L375 BasicCegarLoop]: trace histogram [27, 26, 1, 1, 1] [2018-10-02 12:08:58,615 INFO L423 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:58,615 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:58,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1884640299, now seen corresponding path program 26 times [2018-10-02 12:08:58,616 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:58,616 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:58,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:58,616 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:08:58,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:58,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:59,205 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:59,205 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:59,205 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:59,213 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:08:59,243 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:08:59,244 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:59,248 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:59,440 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:08:59,461 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:59,461 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-10-02 12:08:59,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-02 12:08:59,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-02 12:08:59,462 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:59,462 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 29 states. [2018-10-02 12:08:59,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:59,756 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-10-02 12:08:59,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-02 12:08:59,757 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 56 [2018-10-02 12:08:59,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:59,757 INFO L225 Difference]: With dead ends: 61 [2018-10-02 12:08:59,757 INFO L226 Difference]: Without dead ends: 59 [2018-10-02 12:08:59,758 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.3s impTime [2018-10-02 12:08:59,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-02 12:08:59,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-10-02 12:08:59,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-02 12:08:59,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-10-02 12:08:59,761 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 56 [2018-10-02 12:08:59,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:59,761 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-10-02 12:08:59,761 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-02 12:08:59,761 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-10-02 12:08:59,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-02 12:08:59,762 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:59,762 INFO L375 BasicCegarLoop]: trace histogram [28, 27, 1, 1, 1] [2018-10-02 12:08:59,762 INFO L423 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:59,762 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:59,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1336819483, now seen corresponding path program 27 times [2018-10-02 12:08:59,768 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:59,768 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:59,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:59,769 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:59,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:59,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:00,142 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:00,142 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:00,142 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:00,150 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:09:00,243 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-10-02 12:09:00,244 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:00,246 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:00,381 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:00,410 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:00,411 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-10-02 12:09:00,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-02 12:09:00,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-02 12:09:00,412 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:00,412 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 30 states. [2018-10-02 12:09:00,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:00,669 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-10-02 12:09:00,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-02 12:09:00,670 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 58 [2018-10-02 12:09:00,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:00,670 INFO L225 Difference]: With dead ends: 63 [2018-10-02 12:09:00,671 INFO L226 Difference]: Without dead ends: 61 [2018-10-02 12:09:00,671 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime [2018-10-02 12:09:00,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-10-02 12:09:00,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-10-02 12:09:00,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-10-02 12:09:00,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-10-02 12:09:00,673 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 58 [2018-10-02 12:09:00,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:00,674 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-10-02 12:09:00,674 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-02 12:09:00,674 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-10-02 12:09:00,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-10-02 12:09:00,674 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:00,674 INFO L375 BasicCegarLoop]: trace histogram [29, 28, 1, 1, 1] [2018-10-02 12:09:00,674 INFO L423 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:00,675 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:00,675 INFO L82 PathProgramCache]: Analyzing trace with hash -488249569, now seen corresponding path program 28 times [2018-10-02 12:09:00,675 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:00,675 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:00,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:00,676 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:00,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:00,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:01,223 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:01,223 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:01,223 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:01,230 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:09:01,270 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:09:01,271 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:01,273 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:01,543 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:01,563 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:01,563 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-10-02 12:09:01,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-02 12:09:01,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-02 12:09:01,563 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:01,564 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 31 states. [2018-10-02 12:09:01,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:01,805 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-10-02 12:09:01,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-02 12:09:01,805 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 60 [2018-10-02 12:09:01,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:01,806 INFO L225 Difference]: With dead ends: 65 [2018-10-02 12:09:01,806 INFO L226 Difference]: Without dead ends: 63 [2018-10-02 12:09:01,807 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.4s impTime [2018-10-02 12:09:01,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-10-02 12:09:01,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-10-02 12:09:01,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-10-02 12:09:01,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-10-02 12:09:01,810 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 60 [2018-10-02 12:09:01,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:01,811 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-10-02 12:09:01,811 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-02 12:09:01,811 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-10-02 12:09:01,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-02 12:09:01,811 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:01,812 INFO L375 BasicCegarLoop]: trace histogram [30, 29, 1, 1, 1] [2018-10-02 12:09:01,812 INFO L423 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:01,812 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:01,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1056348455, now seen corresponding path program 29 times [2018-10-02 12:09:01,812 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:01,812 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:01,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:01,813 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:01,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:01,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:02,141 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:02,142 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:02,142 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:02,150 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:09:02,329 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-10-02 12:09:02,329 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:02,332 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:02,471 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:02,496 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:02,496 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-10-02 12:09:02,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-02 12:09:02,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-02 12:09:02,497 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:02,497 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 32 states. [2018-10-02 12:09:02,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:02,632 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-10-02 12:09:02,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-02 12:09:02,633 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 62 [2018-10-02 12:09:02,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:02,634 INFO L225 Difference]: With dead ends: 67 [2018-10-02 12:09:02,634 INFO L226 Difference]: Without dead ends: 65 [2018-10-02 12:09:02,634 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime [2018-10-02 12:09:02,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-10-02 12:09:02,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-10-02 12:09:02,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-10-02 12:09:02,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-10-02 12:09:02,637 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 62 [2018-10-02 12:09:02,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:02,637 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-10-02 12:09:02,637 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-02 12:09:02,637 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-10-02 12:09:02,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-10-02 12:09:02,638 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:02,638 INFO L375 BasicCegarLoop]: trace histogram [31, 30, 1, 1, 1] [2018-10-02 12:09:02,638 INFO L423 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:02,638 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:02,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1538531309, now seen corresponding path program 30 times [2018-10-02 12:09:02,638 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:02,638 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:02,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:02,639 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:02,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:02,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:03,210 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:03,211 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:03,211 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:03,219 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:09:03,325 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-10-02 12:09:03,325 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:03,329 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:03,478 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:03,499 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:03,499 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-10-02 12:09:03,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-02 12:09:03,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-02 12:09:03,500 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:03,500 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 33 states. [2018-10-02 12:09:03,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:03,614 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-10-02 12:09:03,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-02 12:09:03,614 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 64 [2018-10-02 12:09:03,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:03,615 INFO L225 Difference]: With dead ends: 69 [2018-10-02 12:09:03,616 INFO L226 Difference]: Without dead ends: 67 [2018-10-02 12:09:03,616 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.4s impTime [2018-10-02 12:09:03,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-10-02 12:09:03,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-10-02 12:09:03,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-10-02 12:09:03,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-10-02 12:09:03,619 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 64 [2018-10-02 12:09:03,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:03,620 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-10-02 12:09:03,620 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-02 12:09:03,620 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-10-02 12:09:03,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-02 12:09:03,620 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:03,620 INFO L375 BasicCegarLoop]: trace histogram [32, 31, 1, 1, 1] [2018-10-02 12:09:03,621 INFO L423 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:03,621 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:03,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1059786035, now seen corresponding path program 31 times [2018-10-02 12:09:03,621 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:03,621 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:03,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:03,622 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:03,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:04,256 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:04,257 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:04,257 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:04,264 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:09:04,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:04,300 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:04,585 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:04,606 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:04,606 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-10-02 12:09:04,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-02 12:09:04,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-02 12:09:04,606 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:04,607 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 34 states. [2018-10-02 12:09:04,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:04,836 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-10-02 12:09:04,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-02 12:09:04,836 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 66 [2018-10-02 12:09:04,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:04,837 INFO L225 Difference]: With dead ends: 71 [2018-10-02 12:09:04,837 INFO L226 Difference]: Without dead ends: 69 [2018-10-02 12:09:04,838 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.4s impTime [2018-10-02 12:09:04,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-10-02 12:09:04,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-10-02 12:09:04,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-10-02 12:09:04,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-10-02 12:09:04,840 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 66 [2018-10-02 12:09:04,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:04,840 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-10-02 12:09:04,840 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-02 12:09:04,841 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-10-02 12:09:04,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-02 12:09:04,841 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:04,841 INFO L375 BasicCegarLoop]: trace histogram [33, 32, 1, 1, 1] [2018-10-02 12:09:04,841 INFO L423 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:04,841 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:04,841 INFO L82 PathProgramCache]: Analyzing trace with hash -547078393, now seen corresponding path program 32 times [2018-10-02 12:09:04,841 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:04,842 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:04,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:04,842 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:09:04,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:04,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:05,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:05,714 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:05,714 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:05,722 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:09:05,766 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:09:05,766 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:05,768 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:05,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:05,922 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:05,922 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-10-02 12:09:05,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-02 12:09:05,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-02 12:09:05,923 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:05,923 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 35 states. [2018-10-02 12:09:06,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:06,177 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-10-02 12:09:06,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-02 12:09:06,177 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 68 [2018-10-02 12:09:06,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:06,178 INFO L225 Difference]: With dead ends: 73 [2018-10-02 12:09:06,178 INFO L226 Difference]: Without dead ends: 71 [2018-10-02 12:09:06,179 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.6s impTime [2018-10-02 12:09:06,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-02 12:09:06,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-10-02 12:09:06,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-10-02 12:09:06,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-10-02 12:09:06,183 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 68 [2018-10-02 12:09:06,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:06,183 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-10-02 12:09:06,183 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-02 12:09:06,183 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-10-02 12:09:06,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-02 12:09:06,184 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:06,184 INFO L375 BasicCegarLoop]: trace histogram [34, 33, 1, 1, 1] [2018-10-02 12:09:06,184 INFO L423 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:06,184 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:06,184 INFO L82 PathProgramCache]: Analyzing trace with hash -1756273471, now seen corresponding path program 33 times [2018-10-02 12:09:06,185 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:06,185 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:06,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:06,185 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:06,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:06,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:06,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:06,561 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:06,561 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:06,570 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:09:06,706 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2018-10-02 12:09:06,707 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:06,709 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:06,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:06,855 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:06,855 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-10-02 12:09:06,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-02 12:09:06,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-02 12:09:06,856 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:06,856 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 36 states. [2018-10-02 12:09:07,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:07,037 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-10-02 12:09:07,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-02 12:09:07,037 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 70 [2018-10-02 12:09:07,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:07,038 INFO L225 Difference]: With dead ends: 75 [2018-10-02 12:09:07,038 INFO L226 Difference]: Without dead ends: 73 [2018-10-02 12:09:07,039 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime [2018-10-02 12:09:07,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-10-02 12:09:07,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-10-02 12:09:07,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-10-02 12:09:07,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-10-02 12:09:07,042 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 70 [2018-10-02 12:09:07,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:07,042 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-10-02 12:09:07,042 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-02 12:09:07,042 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-10-02 12:09:07,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-10-02 12:09:07,043 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:07,043 INFO L375 BasicCegarLoop]: trace histogram [35, 34, 1, 1, 1] [2018-10-02 12:09:07,043 INFO L423 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:07,043 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:07,043 INFO L82 PathProgramCache]: Analyzing trace with hash 143393787, now seen corresponding path program 34 times [2018-10-02 12:09:07,044 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:07,044 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:07,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:07,044 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:07,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:07,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:07,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:07,656 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:07,656 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:07,667 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:09:07,700 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:09:07,701 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:07,702 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:07,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:07,828 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:07,828 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-10-02 12:09:07,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-02 12:09:07,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-02 12:09:07,829 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:07,829 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 37 states. [2018-10-02 12:09:08,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:08,096 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-10-02 12:09:08,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-02 12:09:08,096 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 72 [2018-10-02 12:09:08,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:08,097 INFO L225 Difference]: With dead ends: 77 [2018-10-02 12:09:08,097 INFO L226 Difference]: Without dead ends: 75 [2018-10-02 12:09:08,098 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.4s impTime [2018-10-02 12:09:08,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-10-02 12:09:08,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-10-02 12:09:08,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-02 12:09:08,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-10-02 12:09:08,101 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 72 [2018-10-02 12:09:08,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:08,101 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-10-02 12:09:08,101 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-02 12:09:08,101 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-10-02 12:09:08,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-02 12:09:08,102 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:08,102 INFO L375 BasicCegarLoop]: trace histogram [36, 35, 1, 1, 1] [2018-10-02 12:09:08,102 INFO L423 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:08,102 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:08,103 INFO L82 PathProgramCache]: Analyzing trace with hash 362527925, now seen corresponding path program 35 times [2018-10-02 12:09:08,103 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:08,103 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:08,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:08,103 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:08,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:08,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:09,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:09,079 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:09,079 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:09,087 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:09:09,398 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-10-02 12:09:09,398 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:09,401 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:09,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:09,565 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:09,565 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-10-02 12:09:09,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-02 12:09:09,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-02 12:09:09,566 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:09,566 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 38 states. [2018-10-02 12:09:09,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:09,966 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-10-02 12:09:09,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-02 12:09:09,967 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 74 [2018-10-02 12:09:09,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:09,967 INFO L225 Difference]: With dead ends: 79 [2018-10-02 12:09:09,967 INFO L226 Difference]: Without dead ends: 77 [2018-10-02 12:09:09,968 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.7s impTime [2018-10-02 12:09:09,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-10-02 12:09:09,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-10-02 12:09:09,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-10-02 12:09:09,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-10-02 12:09:09,970 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 74 [2018-10-02 12:09:09,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:09,971 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-10-02 12:09:09,971 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-02 12:09:09,971 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-10-02 12:09:09,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-10-02 12:09:09,971 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:09,971 INFO L375 BasicCegarLoop]: trace histogram [37, 36, 1, 1, 1] [2018-10-02 12:09:09,972 INFO L423 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:09,972 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:09,972 INFO L82 PathProgramCache]: Analyzing trace with hash 497037039, now seen corresponding path program 36 times [2018-10-02 12:09:09,972 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:09,972 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:09,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:09,973 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:09,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:09,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:10,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:10,646 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:10,646 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:10,654 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:09:10,805 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-10-02 12:09:10,806 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:10,810 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:11,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:11,479 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:11,479 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-10-02 12:09:11,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-02 12:09:11,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-02 12:09:11,480 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:11,480 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 39 states. [2018-10-02 12:09:11,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:11,713 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-10-02 12:09:11,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-02 12:09:11,714 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 76 [2018-10-02 12:09:11,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:11,715 INFO L225 Difference]: With dead ends: 81 [2018-10-02 12:09:11,715 INFO L226 Difference]: Without dead ends: 79 [2018-10-02 12:09:11,715 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.5s impTime [2018-10-02 12:09:11,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-10-02 12:09:11,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-10-02 12:09:11,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-10-02 12:09:11,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-10-02 12:09:11,718 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 76 [2018-10-02 12:09:11,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:11,719 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-10-02 12:09:11,719 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-02 12:09:11,719 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-10-02 12:09:11,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-02 12:09:11,719 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:11,719 INFO L375 BasicCegarLoop]: trace histogram [38, 37, 1, 1, 1] [2018-10-02 12:09:11,720 INFO L423 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:11,720 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:11,720 INFO L82 PathProgramCache]: Analyzing trace with hash 911276713, now seen corresponding path program 37 times [2018-10-02 12:09:11,720 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:11,720 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:11,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:11,721 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:11,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:11,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:12,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:12,501 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:12,501 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:12,509 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:09:12,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:12,556 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:12,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:12,756 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:12,756 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-10-02 12:09:12,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-02 12:09:12,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-02 12:09:12,756 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:12,757 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 40 states. [2018-10-02 12:09:13,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:13,009 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-10-02 12:09:13,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-02 12:09:13,010 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 78 [2018-10-02 12:09:13,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:13,011 INFO L225 Difference]: With dead ends: 83 [2018-10-02 12:09:13,011 INFO L226 Difference]: Without dead ends: 81 [2018-10-02 12:09:13,011 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.6s impTime [2018-10-02 12:09:13,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-10-02 12:09:13,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-10-02 12:09:13,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-10-02 12:09:13,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-10-02 12:09:13,014 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 78 [2018-10-02 12:09:13,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:13,015 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-10-02 12:09:13,015 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-02 12:09:13,015 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-10-02 12:09:13,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-10-02 12:09:13,015 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:13,015 INFO L375 BasicCegarLoop]: trace histogram [39, 38, 1, 1, 1] [2018-10-02 12:09:13,016 INFO L423 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:13,016 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:13,016 INFO L82 PathProgramCache]: Analyzing trace with hash -436355101, now seen corresponding path program 38 times [2018-10-02 12:09:13,016 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:13,016 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:13,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:13,017 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:09:13,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:13,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:13,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:13,709 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:13,709 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:13,716 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:09:13,767 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:09:13,767 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:13,770 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:13,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:13,955 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:13,955 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-10-02 12:09:13,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-02 12:09:13,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-02 12:09:13,956 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:13,956 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 41 states. [2018-10-02 12:09:14,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:14,260 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-10-02 12:09:14,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-02 12:09:14,261 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 80 [2018-10-02 12:09:14,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:14,262 INFO L225 Difference]: With dead ends: 85 [2018-10-02 12:09:14,262 INFO L226 Difference]: Without dead ends: 83 [2018-10-02 12:09:14,262 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.5s impTime [2018-10-02 12:09:14,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-10-02 12:09:14,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-10-02 12:09:14,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-10-02 12:09:14,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-10-02 12:09:14,266 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 80 [2018-10-02 12:09:14,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:14,267 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-10-02 12:09:14,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-02 12:09:14,267 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-10-02 12:09:14,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-02 12:09:14,267 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:14,268 INFO L375 BasicCegarLoop]: trace histogram [40, 39, 1, 1, 1] [2018-10-02 12:09:14,268 INFO L423 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:14,268 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:14,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1569595037, now seen corresponding path program 39 times [2018-10-02 12:09:14,268 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:14,268 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:14,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:14,269 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:14,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:14,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:14,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:14,999 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:14,999 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:15,006 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:09:15,219 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2018-10-02 12:09:15,220 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:15,223 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:15,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:15,390 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:15,391 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-10-02 12:09:15,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-02 12:09:15,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-02 12:09:15,391 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:15,391 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 42 states. [2018-10-02 12:09:15,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:15,641 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-10-02 12:09:15,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-02 12:09:15,642 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 82 [2018-10-02 12:09:15,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:15,642 INFO L225 Difference]: With dead ends: 87 [2018-10-02 12:09:15,642 INFO L226 Difference]: Without dead ends: 85 [2018-10-02 12:09:15,643 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.5s impTime [2018-10-02 12:09:15,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-10-02 12:09:15,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-10-02 12:09:15,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-10-02 12:09:15,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2018-10-02 12:09:15,645 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 82 [2018-10-02 12:09:15,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:15,645 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2018-10-02 12:09:15,645 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-02 12:09:15,645 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2018-10-02 12:09:15,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-10-02 12:09:15,646 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:15,646 INFO L375 BasicCegarLoop]: trace histogram [41, 40, 1, 1, 1] [2018-10-02 12:09:15,646 INFO L423 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:15,646 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:15,646 INFO L82 PathProgramCache]: Analyzing trace with hash 847361751, now seen corresponding path program 40 times [2018-10-02 12:09:15,646 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:15,646 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:15,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:15,647 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:15,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:15,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:17,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:17,035 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:17,035 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:17,042 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:09:17,082 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:09:17,082 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:17,084 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:17,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:17,230 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:17,230 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-10-02 12:09:17,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-02 12:09:17,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-02 12:09:17,231 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:17,231 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 43 states. [2018-10-02 12:09:17,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:17,566 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-10-02 12:09:17,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-02 12:09:17,566 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 84 [2018-10-02 12:09:17,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:17,568 INFO L225 Difference]: With dead ends: 89 [2018-10-02 12:09:17,568 INFO L226 Difference]: Without dead ends: 87 [2018-10-02 12:09:17,568 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.1s impTime [2018-10-02 12:09:17,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-10-02 12:09:17,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-10-02 12:09:17,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-10-02 12:09:17,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-10-02 12:09:17,571 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 84 [2018-10-02 12:09:17,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:17,572 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-10-02 12:09:17,572 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-02 12:09:17,572 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-10-02 12:09:17,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-02 12:09:17,573 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:17,573 INFO L375 BasicCegarLoop]: trace histogram [42, 41, 1, 1, 1] [2018-10-02 12:09:17,573 INFO L423 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:17,573 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:17,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1729091439, now seen corresponding path program 41 times [2018-10-02 12:09:17,573 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:17,573 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:17,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:17,574 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:17,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:17,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:19,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:19,213 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:19,213 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:19,220 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:09:19,757 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2018-10-02 12:09:19,757 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:19,762 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:20,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:20,146 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:20,146 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-10-02 12:09:20,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-02 12:09:20,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-02 12:09:20,147 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:20,147 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 44 states. [2018-10-02 12:09:20,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:20,456 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-10-02 12:09:20,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-02 12:09:20,457 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 86 [2018-10-02 12:09:20,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:20,458 INFO L225 Difference]: With dead ends: 91 [2018-10-02 12:09:20,458 INFO L226 Difference]: Without dead ends: 89 [2018-10-02 12:09:20,458 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.2s impTime [2018-10-02 12:09:20,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-10-02 12:09:20,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-10-02 12:09:20,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-10-02 12:09:20,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-10-02 12:09:20,461 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 86 [2018-10-02 12:09:20,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:20,461 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-10-02 12:09:20,461 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-02 12:09:20,461 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-10-02 12:09:20,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-02 12:09:20,462 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:20,462 INFO L375 BasicCegarLoop]: trace histogram [43, 42, 1, 1, 1] [2018-10-02 12:09:20,462 INFO L423 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:20,462 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:20,462 INFO L82 PathProgramCache]: Analyzing trace with hash 495522763, now seen corresponding path program 42 times [2018-10-02 12:09:20,462 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:20,462 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:20,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:20,463 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:20,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:20,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:21,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:21,244 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:21,244 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:21,251 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:09:21,471 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-10-02 12:09:21,471 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:21,474 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:21,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:21,663 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:21,664 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-10-02 12:09:21,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-02 12:09:21,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-02 12:09:21,664 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:21,665 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 45 states. [2018-10-02 12:09:21,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:21,847 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-10-02 12:09:21,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-02 12:09:21,847 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 88 [2018-10-02 12:09:21,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:21,848 INFO L225 Difference]: With dead ends: 93 [2018-10-02 12:09:21,848 INFO L226 Difference]: Without dead ends: 91 [2018-10-02 12:09:21,848 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.6s impTime [2018-10-02 12:09:21,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-02 12:09:21,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-10-02 12:09:21,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-10-02 12:09:21,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-10-02 12:09:21,851 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 88 [2018-10-02 12:09:21,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:21,852 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-10-02 12:09:21,852 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-02 12:09:21,852 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-10-02 12:09:21,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-02 12:09:21,852 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:21,852 INFO L375 BasicCegarLoop]: trace histogram [44, 43, 1, 1, 1] [2018-10-02 12:09:21,853 INFO L423 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:21,853 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:21,853 INFO L82 PathProgramCache]: Analyzing trace with hash -543942523, now seen corresponding path program 43 times [2018-10-02 12:09:21,853 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:21,853 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:21,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:21,853 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:21,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:21,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:22,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:22,582 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:22,582 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:22,592 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:09:22,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:22,634 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:22,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:22,795 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:22,795 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-10-02 12:09:22,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-02 12:09:22,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-02 12:09:22,796 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:22,796 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 46 states. [2018-10-02 12:09:23,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:23,079 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-10-02 12:09:23,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-02 12:09:23,080 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 90 [2018-10-02 12:09:23,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:23,080 INFO L225 Difference]: With dead ends: 95 [2018-10-02 12:09:23,080 INFO L226 Difference]: Without dead ends: 93 [2018-10-02 12:09:23,081 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.6s impTime [2018-10-02 12:09:23,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-10-02 12:09:23,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-10-02 12:09:23,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-10-02 12:09:23,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-10-02 12:09:23,083 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 90 [2018-10-02 12:09:23,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:23,083 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-10-02 12:09:23,083 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-02 12:09:23,084 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-10-02 12:09:23,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-02 12:09:23,084 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:23,084 INFO L375 BasicCegarLoop]: trace histogram [45, 44, 1, 1, 1] [2018-10-02 12:09:23,084 INFO L423 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:23,084 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:23,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1257297599, now seen corresponding path program 44 times [2018-10-02 12:09:23,084 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:23,085 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:23,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:23,085 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:09:23,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:23,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:23,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:23,776 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:23,776 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:23,786 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:09:23,835 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:09:23,835 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:23,838 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:24,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:24,228 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:24,228 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-10-02 12:09:24,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-02 12:09:24,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-02 12:09:24,229 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:24,229 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 47 states. [2018-10-02 12:09:24,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:24,619 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-10-02 12:09:24,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-02 12:09:24,619 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 92 [2018-10-02 12:09:24,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:24,620 INFO L225 Difference]: With dead ends: 97 [2018-10-02 12:09:24,621 INFO L226 Difference]: Without dead ends: 95 [2018-10-02 12:09:24,621 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.5s impTime [2018-10-02 12:09:24,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-10-02 12:09:24,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-10-02 12:09:24,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-10-02 12:09:24,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-10-02 12:09:24,625 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 92 [2018-10-02 12:09:24,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:24,625 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-10-02 12:09:24,625 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-02 12:09:24,625 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-10-02 12:09:24,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-10-02 12:09:24,626 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:24,626 INFO L375 BasicCegarLoop]: trace histogram [46, 45, 1, 1, 1] [2018-10-02 12:09:24,626 INFO L423 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:24,626 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:24,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1377234553, now seen corresponding path program 45 times [2018-10-02 12:09:24,626 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:24,626 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:24,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:24,627 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:24,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:24,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:26,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:26,724 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:26,724 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:26,733 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:09:27,065 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2018-10-02 12:09:27,066 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:27,069 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:27,253 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:27,275 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:27,276 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-10-02 12:09:27,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-02 12:09:27,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-02 12:09:27,276 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:27,276 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 48 states. [2018-10-02 12:09:27,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:27,521 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-10-02 12:09:27,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-02 12:09:27,522 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 94 [2018-10-02 12:09:27,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:27,523 INFO L225 Difference]: With dead ends: 99 [2018-10-02 12:09:27,523 INFO L226 Difference]: Without dead ends: 97 [2018-10-02 12:09:27,523 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.5s impTime [2018-10-02 12:09:27,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-10-02 12:09:27,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-10-02 12:09:27,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-10-02 12:09:27,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-10-02 12:09:27,527 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 94 [2018-10-02 12:09:27,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:27,527 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-10-02 12:09:27,527 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-02 12:09:27,527 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-10-02 12:09:27,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-02 12:09:27,528 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:27,528 INFO L375 BasicCegarLoop]: trace histogram [47, 46, 1, 1, 1] [2018-10-02 12:09:27,528 INFO L423 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:27,528 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:27,529 INFO L82 PathProgramCache]: Analyzing trace with hash 672530355, now seen corresponding path program 46 times [2018-10-02 12:09:27,529 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:27,529 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:27,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:27,529 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:27,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:27,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:28,765 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:28,765 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:28,765 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:28,772 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:09:28,819 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:09:28,819 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:28,821 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:28,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:29,018 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:29,018 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-10-02 12:09:29,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-02 12:09:29,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-02 12:09:29,019 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:29,019 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 49 states. [2018-10-02 12:09:29,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:29,312 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-10-02 12:09:29,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-02 12:09:29,312 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 96 [2018-10-02 12:09:29,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:29,313 INFO L225 Difference]: With dead ends: 101 [2018-10-02 12:09:29,314 INFO L226 Difference]: Without dead ends: 99 [2018-10-02 12:09:29,314 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 1.0s impTime [2018-10-02 12:09:29,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-10-02 12:09:29,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-10-02 12:09:29,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-10-02 12:09:29,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-10-02 12:09:29,316 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 96 [2018-10-02 12:09:29,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:29,316 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-10-02 12:09:29,316 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-02 12:09:29,316 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-10-02 12:09:29,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-02 12:09:29,317 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:29,317 INFO L375 BasicCegarLoop]: trace histogram [48, 47, 1, 1, 1] [2018-10-02 12:09:29,317 INFO L423 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:29,317 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:29,317 INFO L82 PathProgramCache]: Analyzing trace with hash 2056628845, now seen corresponding path program 47 times [2018-10-02 12:09:29,317 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:29,317 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:29,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:29,318 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:29,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:29,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:30,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:30,086 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:30,086 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:30,095 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:09:30,961 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2018-10-02 12:09:30,961 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:30,965 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:31,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:31,227 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:31,228 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-10-02 12:09:31,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-02 12:09:31,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-02 12:09:31,228 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:31,228 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 50 states. [2018-10-02 12:09:31,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:31,477 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-10-02 12:09:31,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-02 12:09:31,478 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 98 [2018-10-02 12:09:31,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:31,479 INFO L225 Difference]: With dead ends: 103 [2018-10-02 12:09:31,479 INFO L226 Difference]: Without dead ends: 101 [2018-10-02 12:09:31,479 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.5s impTime [2018-10-02 12:09:31,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-10-02 12:09:31,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-10-02 12:09:31,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-10-02 12:09:31,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2018-10-02 12:09:31,482 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 98 [2018-10-02 12:09:31,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:31,482 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2018-10-02 12:09:31,482 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-02 12:09:31,482 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2018-10-02 12:09:31,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-02 12:09:31,482 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:31,483 INFO L375 BasicCegarLoop]: trace histogram [49, 48, 1, 1, 1] [2018-10-02 12:09:31,483 INFO L423 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:31,483 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:31,483 INFO L82 PathProgramCache]: Analyzing trace with hash 735415975, now seen corresponding path program 48 times [2018-10-02 12:09:31,483 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:31,483 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:31,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:31,484 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:31,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:31,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:32,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:32,283 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:32,283 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:32,291 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:09:32,601 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-10-02 12:09:32,601 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:32,605 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:32,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:32,835 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:32,836 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-10-02 12:09:32,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-02 12:09:32,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-02 12:09:32,836 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:32,836 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 51 states. [2018-10-02 12:09:33,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:33,107 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-10-02 12:09:33,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-02 12:09:33,108 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 100 [2018-10-02 12:09:33,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:33,109 INFO L225 Difference]: With dead ends: 105 [2018-10-02 12:09:33,109 INFO L226 Difference]: Without dead ends: 103 [2018-10-02 12:09:33,110 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.6s impTime [2018-10-02 12:09:33,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-10-02 12:09:33,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-10-02 12:09:33,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-10-02 12:09:33,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-10-02 12:09:33,113 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 100 [2018-10-02 12:09:33,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:33,113 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-10-02 12:09:33,113 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-02 12:09:33,114 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-10-02 12:09:33,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-02 12:09:33,114 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:33,114 INFO L375 BasicCegarLoop]: trace histogram [50, 49, 1, 1, 1] [2018-10-02 12:09:33,114 INFO L423 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:33,115 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:33,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1934799775, now seen corresponding path program 49 times [2018-10-02 12:09:33,115 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:33,115 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:33,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:33,116 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:33,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:33,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:34,494 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:34,495 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:34,495 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:34,502 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:09:34,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:34,557 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:35,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:35,650 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:35,650 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-10-02 12:09:35,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-02 12:09:35,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-02 12:09:35,651 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:35,651 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 52 states. [2018-10-02 12:09:35,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:35,949 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-10-02 12:09:35,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-02 12:09:35,949 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 102 [2018-10-02 12:09:35,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:35,950 INFO L225 Difference]: With dead ends: 107 [2018-10-02 12:09:35,950 INFO L226 Difference]: Without dead ends: 105 [2018-10-02 12:09:35,950 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.0s impTime [2018-10-02 12:09:35,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-10-02 12:09:35,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-10-02 12:09:35,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-10-02 12:09:35,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-10-02 12:09:35,954 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 102 [2018-10-02 12:09:35,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:35,954 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-10-02 12:09:35,954 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-02 12:09:35,954 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-10-02 12:09:35,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-02 12:09:35,955 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:35,955 INFO L375 BasicCegarLoop]: trace histogram [51, 50, 1, 1, 1] [2018-10-02 12:09:35,955 INFO L423 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:35,955 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:35,956 INFO L82 PathProgramCache]: Analyzing trace with hash 378307483, now seen corresponding path program 50 times [2018-10-02 12:09:35,956 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:35,956 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:35,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:35,957 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:09:35,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:35,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:37,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:37,587 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:37,587 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:37,595 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:09:37,666 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:09:37,667 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:37,670 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:37,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:37,981 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:37,981 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-10-02 12:09:37,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-02 12:09:37,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-02 12:09:37,982 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:37,982 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 53 states. [2018-10-02 12:09:38,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:38,414 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-10-02 12:09:38,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-02 12:09:38,415 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 104 [2018-10-02 12:09:38,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:38,416 INFO L225 Difference]: With dead ends: 109 [2018-10-02 12:09:38,416 INFO L226 Difference]: Without dead ends: 107 [2018-10-02 12:09:38,416 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.3s impTime [2018-10-02 12:09:38,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-10-02 12:09:38,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-10-02 12:09:38,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-10-02 12:09:38,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-10-02 12:09:38,419 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 104 [2018-10-02 12:09:38,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:38,420 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-10-02 12:09:38,420 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-02 12:09:38,420 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-10-02 12:09:38,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-02 12:09:38,420 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:38,421 INFO L375 BasicCegarLoop]: trace histogram [52, 51, 1, 1, 1] [2018-10-02 12:09:38,421 INFO L423 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:38,421 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:38,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1518676907, now seen corresponding path program 51 times [2018-10-02 12:09:38,421 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:38,421 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:38,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:38,422 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:38,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:38,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:39,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2652 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:39,665 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:39,665 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:39,672 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:09:40,102 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2018-10-02 12:09:40,102 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:40,106 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:40,616 INFO L134 CoverageAnalysis]: Checked inductivity of 2652 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:40,638 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:40,638 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-10-02 12:09:40,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-02 12:09:40,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-02 12:09:40,639 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:40,639 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 54 states. [2018-10-02 12:09:41,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:41,002 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-10-02 12:09:41,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-02 12:09:41,002 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 106 [2018-10-02 12:09:41,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:41,003 INFO L225 Difference]: With dead ends: 111 [2018-10-02 12:09:41,003 INFO L226 Difference]: Without dead ends: 109 [2018-10-02 12:09:41,003 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.0s impTime [2018-10-02 12:09:41,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-10-02 12:09:41,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-10-02 12:09:41,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-10-02 12:09:41,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-10-02 12:09:41,007 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 106 [2018-10-02 12:09:41,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:41,007 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-10-02 12:09:41,007 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-02 12:09:41,007 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-10-02 12:09:41,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-02 12:09:41,008 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:41,008 INFO L375 BasicCegarLoop]: trace histogram [53, 52, 1, 1, 1] [2018-10-02 12:09:41,008 INFO L423 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:41,008 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:41,008 INFO L82 PathProgramCache]: Analyzing trace with hash 840425103, now seen corresponding path program 52 times [2018-10-02 12:09:41,008 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:41,008 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:41,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:41,009 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:41,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:41,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:42,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2756 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:42,732 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:42,732 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:42,761 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:09:42,830 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:09:42,831 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:42,833 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:43,060 INFO L134 CoverageAnalysis]: Checked inductivity of 2756 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:43,081 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:43,082 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-10-02 12:09:43,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-02 12:09:43,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-02 12:09:43,082 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:43,082 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 55 states. [2018-10-02 12:09:43,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:43,404 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-10-02 12:09:43,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-02 12:09:43,405 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 108 [2018-10-02 12:09:43,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:43,406 INFO L225 Difference]: With dead ends: 113 [2018-10-02 12:09:43,406 INFO L226 Difference]: Without dead ends: 111 [2018-10-02 12:09:43,406 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.4s impTime [2018-10-02 12:09:43,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-10-02 12:09:43,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-10-02 12:09:43,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-10-02 12:09:43,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-10-02 12:09:43,409 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 108 [2018-10-02 12:09:43,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:43,410 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-10-02 12:09:43,410 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-02 12:09:43,410 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-10-02 12:09:43,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-02 12:09:43,410 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:43,410 INFO L375 BasicCegarLoop]: trace histogram [54, 53, 1, 1, 1] [2018-10-02 12:09:43,411 INFO L423 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:43,411 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:43,411 INFO L82 PathProgramCache]: Analyzing trace with hash 194724425, now seen corresponding path program 53 times [2018-10-02 12:09:43,411 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:43,411 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:43,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:43,412 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:43,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:43,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:44,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:44,839 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:44,839 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) [2018-10-02 12:09:44,855 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:46,247 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2018-10-02 12:09:46,247 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:46,251 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:46,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:46,494 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:46,494 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-10-02 12:09:46,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-02 12:09:46,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-02 12:09:46,495 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:46,495 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 56 states. [2018-10-02 12:09:46,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:46,710 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-10-02 12:09:46,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-02 12:09:46,710 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 110 [2018-10-02 12:09:46,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:46,711 INFO L225 Difference]: With dead ends: 115 [2018-10-02 12:09:46,711 INFO L226 Difference]: Without dead ends: 113 [2018-10-02 12:09:46,712 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.2s impTime [2018-10-02 12:09:46,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-10-02 12:09:46,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-10-02 12:09:46,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-10-02 12:09:46,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2018-10-02 12:09:46,715 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 110 [2018-10-02 12:09:46,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:46,716 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2018-10-02 12:09:46,716 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-02 12:09:46,716 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2018-10-02 12:09:46,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-02 12:09:46,717 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:46,717 INFO L375 BasicCegarLoop]: trace histogram [55, 54, 1, 1, 1] [2018-10-02 12:09:46,717 INFO L423 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:46,717 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:46,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1848336509, now seen corresponding path program 54 times [2018-10-02 12:09:46,717 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:46,717 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:46,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:46,718 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:46,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:46,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:47,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:47,815 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:47,815 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:47,823 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:09:48,253 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2018-10-02 12:09:48,253 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:48,257 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:48,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:48,556 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:48,556 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2018-10-02 12:09:48,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-02 12:09:48,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-02 12:09:48,557 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:48,557 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 57 states. [2018-10-02 12:09:49,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:49,269 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-10-02 12:09:49,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-02 12:09:49,270 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 112 [2018-10-02 12:09:49,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:49,271 INFO L225 Difference]: With dead ends: 117 [2018-10-02 12:09:49,271 INFO L226 Difference]: Without dead ends: 115 [2018-10-02 12:09:49,272 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.9s impTime [2018-10-02 12:09:49,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-10-02 12:09:49,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-10-02 12:09:49,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-10-02 12:09:49,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-10-02 12:09:49,275 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 112 [2018-10-02 12:09:49,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:49,275 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-10-02 12:09:49,275 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-02 12:09:49,276 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-10-02 12:09:49,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-02 12:09:49,276 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:49,276 INFO L375 BasicCegarLoop]: trace histogram [56, 55, 1, 1, 1] [2018-10-02 12:09:49,277 INFO L423 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:49,277 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:49,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1865127485, now seen corresponding path program 55 times [2018-10-02 12:09:49,277 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:49,277 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:49,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:49,278 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:49,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:49,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:50,655 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:50,656 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:50,656 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:50,679 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:09:50,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:50,737 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:51,052 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:51,073 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:51,073 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-10-02 12:09:51,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-02 12:09:51,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-02 12:09:51,074 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:51,074 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 58 states. [2018-10-02 12:09:51,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:51,607 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2018-10-02 12:09:51,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-02 12:09:51,607 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 114 [2018-10-02 12:09:51,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:51,609 INFO L225 Difference]: With dead ends: 119 [2018-10-02 12:09:51,609 INFO L226 Difference]: Without dead ends: 117 [2018-10-02 12:09:51,609 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.1s impTime [2018-10-02 12:09:51,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-10-02 12:09:51,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-10-02 12:09:51,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-10-02 12:09:51,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2018-10-02 12:09:51,612 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 114 [2018-10-02 12:09:51,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:51,613 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2018-10-02 12:09:51,613 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-02 12:09:51,613 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2018-10-02 12:09:51,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-02 12:09:51,614 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:51,614 INFO L375 BasicCegarLoop]: trace histogram [57, 56, 1, 1, 1] [2018-10-02 12:09:51,614 INFO L423 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:51,614 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:51,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1386202743, now seen corresponding path program 56 times [2018-10-02 12:09:51,615 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:51,615 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:51,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:51,615 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:09:51,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:51,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:52,774 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:52,775 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:52,775 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:52,782 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:09:52,840 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:09:52,840 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:52,843 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:53,900 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:53,921 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:53,921 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-10-02 12:09:53,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-02 12:09:53,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-02 12:09:53,922 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:53,922 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand 59 states. [2018-10-02 12:09:54,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:54,288 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-10-02 12:09:54,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-02 12:09:54,288 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 116 [2018-10-02 12:09:54,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:54,289 INFO L225 Difference]: With dead ends: 121 [2018-10-02 12:09:54,289 INFO L226 Difference]: Without dead ends: 119 [2018-10-02 12:09:54,289 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.0s impTime [2018-10-02 12:09:54,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-10-02 12:09:54,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-10-02 12:09:54,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-10-02 12:09:54,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-10-02 12:09:54,292 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 116 [2018-10-02 12:09:54,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:54,293 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-10-02 12:09:54,293 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-02 12:09:54,293 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-10-02 12:09:54,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-02 12:09:54,294 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:54,294 INFO L375 BasicCegarLoop]: trace histogram [58, 57, 1, 1, 1] [2018-10-02 12:09:54,294 INFO L423 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:54,294 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:54,294 INFO L82 PathProgramCache]: Analyzing trace with hash 701026353, now seen corresponding path program 57 times [2018-10-02 12:09:54,294 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:54,295 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:54,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:54,295 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:54,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:54,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:55,681 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:55,682 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:55,682 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:55,688 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:09:56,296 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2018-10-02 12:09:56,296 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:56,301 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:56,700 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:56,722 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:56,722 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-10-02 12:09:56,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-02 12:09:56,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-02 12:09:56,723 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:56,723 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 60 states. [2018-10-02 12:09:56,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:56,964 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2018-10-02 12:09:56,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-02 12:09:56,964 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 118 [2018-10-02 12:09:56,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:56,965 INFO L225 Difference]: With dead ends: 123 [2018-10-02 12:09:56,965 INFO L226 Difference]: Without dead ends: 121 [2018-10-02 12:09:56,965 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.1s impTime [2018-10-02 12:09:56,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-10-02 12:09:56,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-10-02 12:09:56,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-10-02 12:09:56,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2018-10-02 12:09:56,969 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 118 [2018-10-02 12:09:56,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:56,969 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2018-10-02 12:09:56,969 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-02 12:09:56,969 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2018-10-02 12:09:56,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-10-02 12:09:56,970 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:56,970 INFO L375 BasicCegarLoop]: trace histogram [59, 58, 1, 1, 1] [2018-10-02 12:09:56,970 INFO L423 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:56,970 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:56,970 INFO L82 PathProgramCache]: Analyzing trace with hash -623488149, now seen corresponding path program 58 times [2018-10-02 12:09:56,971 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:56,971 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:56,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:56,971 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:56,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:56,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:58,436 INFO L134 CoverageAnalysis]: Checked inductivity of 3422 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:58,436 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:58,436 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:58,445 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:09:58,503 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:09:58,503 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:58,506 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:58,719 INFO L134 CoverageAnalysis]: Checked inductivity of 3422 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:09:58,738 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:58,739 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-10-02 12:09:58,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-10-02 12:09:58,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-10-02 12:09:58,739 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:58,740 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand 61 states. [2018-10-02 12:09:59,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:59,099 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-10-02 12:09:59,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-02 12:09:59,100 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 120 [2018-10-02 12:09:59,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:59,100 INFO L225 Difference]: With dead ends: 125 [2018-10-02 12:09:59,100 INFO L226 Difference]: Without dead ends: 123 [2018-10-02 12:09:59,101 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.2s impTime [2018-10-02 12:09:59,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-10-02 12:09:59,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-10-02 12:09:59,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-10-02 12:09:59,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2018-10-02 12:09:59,105 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 120 [2018-10-02 12:09:59,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:59,105 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2018-10-02 12:09:59,105 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-10-02 12:09:59,105 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2018-10-02 12:09:59,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-02 12:09:59,106 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:59,106 INFO L375 BasicCegarLoop]: trace histogram [60, 59, 1, 1, 1] [2018-10-02 12:09:59,106 INFO L423 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:59,106 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:59,106 INFO L82 PathProgramCache]: Analyzing trace with hash 2123362341, now seen corresponding path program 59 times [2018-10-02 12:09:59,107 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:59,107 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:59,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:59,107 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:59,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:59,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:00,640 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:00,640 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:00,641 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:10:00,648 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:10:02,580 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2018-10-02 12:10:02,581 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:02,585 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:02,960 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:02,983 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:02,983 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-10-02 12:10:02,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-02 12:10:02,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-02 12:10:02,984 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:02,984 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 62 states. [2018-10-02 12:10:03,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:03,376 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2018-10-02 12:10:03,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-02 12:10:03,376 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 122 [2018-10-02 12:10:03,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:03,377 INFO L225 Difference]: With dead ends: 127 [2018-10-02 12:10:03,377 INFO L226 Difference]: Without dead ends: 125 [2018-10-02 12:10:03,377 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.3s impTime [2018-10-02 12:10:03,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-10-02 12:10:03,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-10-02 12:10:03,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-10-02 12:10:03,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 125 transitions. [2018-10-02 12:10:03,381 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 125 transitions. Word has length 122 [2018-10-02 12:10:03,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:03,381 INFO L480 AbstractCegarLoop]: Abstraction has 125 states and 125 transitions. [2018-10-02 12:10:03,381 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-02 12:10:03,381 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 125 transitions. [2018-10-02 12:10:03,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-02 12:10:03,382 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:03,382 INFO L375 BasicCegarLoop]: trace histogram [61, 60, 1, 1, 1] [2018-10-02 12:10:03,382 INFO L423 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:03,382 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:03,382 INFO L82 PathProgramCache]: Analyzing trace with hash 441796191, now seen corresponding path program 60 times [2018-10-02 12:10:03,383 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:03,383 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:03,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:03,384 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:03,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:03,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:05,226 INFO L134 CoverageAnalysis]: Checked inductivity of 3660 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:05,227 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:05,227 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:10:05,235 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:10:05,862 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2018-10-02 12:10:05,863 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:05,867 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:06,243 INFO L134 CoverageAnalysis]: Checked inductivity of 3660 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:06,265 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:06,265 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2018-10-02 12:10:06,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-02 12:10:06,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-02 12:10:06,266 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:06,266 INFO L87 Difference]: Start difference. First operand 125 states and 125 transitions. Second operand 63 states. [2018-10-02 12:10:06,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:06,718 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-10-02 12:10:06,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-02 12:10:06,718 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 124 [2018-10-02 12:10:06,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:06,719 INFO L225 Difference]: With dead ends: 129 [2018-10-02 12:10:06,719 INFO L226 Difference]: Without dead ends: 127 [2018-10-02 12:10:06,719 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.5s impTime [2018-10-02 12:10:06,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-10-02 12:10:06,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-10-02 12:10:06,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-10-02 12:10:06,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-10-02 12:10:06,722 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 124 [2018-10-02 12:10:06,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:06,722 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-10-02 12:10:06,722 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-02 12:10:06,722 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-10-02 12:10:06,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-02 12:10:06,722 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:06,723 INFO L375 BasicCegarLoop]: trace histogram [62, 61, 1, 1, 1] [2018-10-02 12:10:06,723 INFO L423 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:06,723 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:06,723 INFO L82 PathProgramCache]: Analyzing trace with hash -635570663, now seen corresponding path program 61 times [2018-10-02 12:10:06,723 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:06,723 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:06,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:06,724 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:06,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:06,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:07,789 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:07,789 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:07,790 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:10:07,798 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:10:07,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:07,861 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:08,081 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:08,102 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:08,103 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-10-02 12:10:08,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-02 12:10:08,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-02 12:10:08,104 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:08,104 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 64 states. [2018-10-02 12:10:08,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:08,462 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2018-10-02 12:10:08,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-02 12:10:08,462 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 126 [2018-10-02 12:10:08,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:08,464 INFO L225 Difference]: With dead ends: 131 [2018-10-02 12:10:08,464 INFO L226 Difference]: Without dead ends: 129 [2018-10-02 12:10:08,464 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.8s impTime [2018-10-02 12:10:08,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-10-02 12:10:08,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-10-02 12:10:08,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-10-02 12:10:08,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 129 transitions. [2018-10-02 12:10:08,468 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 129 transitions. Word has length 126 [2018-10-02 12:10:08,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:08,468 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 129 transitions. [2018-10-02 12:10:08,468 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-02 12:10:08,468 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 129 transitions. [2018-10-02 12:10:08,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-02 12:10:08,469 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:08,469 INFO L375 BasicCegarLoop]: trace histogram [63, 62, 1, 1, 1] [2018-10-02 12:10:08,469 INFO L423 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:08,470 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:08,470 INFO L82 PathProgramCache]: Analyzing trace with hash -897999021, now seen corresponding path program 62 times [2018-10-02 12:10:08,470 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:08,470 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:08,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:08,471 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:10:08,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:08,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:09,533 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:09,533 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:09,533 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:10:09,541 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:10:09,601 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:10:09,601 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:09,604 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:09,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:09,844 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:09,844 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-10-02 12:10:09,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-02 12:10:09,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-02 12:10:09,845 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:09,845 INFO L87 Difference]: Start difference. First operand 129 states and 129 transitions. Second operand 65 states. [2018-10-02 12:10:10,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:10,165 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-10-02 12:10:10,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-02 12:10:10,165 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 128 [2018-10-02 12:10:10,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:10,166 INFO L225 Difference]: With dead ends: 133 [2018-10-02 12:10:10,166 INFO L226 Difference]: Without dead ends: 131 [2018-10-02 12:10:10,166 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.8s impTime [2018-10-02 12:10:10,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-10-02 12:10:10,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-10-02 12:10:10,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-10-02 12:10:10,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2018-10-02 12:10:10,169 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 128 [2018-10-02 12:10:10,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:10,169 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2018-10-02 12:10:10,169 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-02 12:10:10,170 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2018-10-02 12:10:10,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-02 12:10:10,170 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:10,170 INFO L375 BasicCegarLoop]: trace histogram [64, 63, 1, 1, 1] [2018-10-02 12:10:10,170 INFO L423 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:10,170 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:10,171 INFO L82 PathProgramCache]: Analyzing trace with hash 311419405, now seen corresponding path program 63 times [2018-10-02 12:10:10,171 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:10,171 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:10,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:10,171 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:10,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:10,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:11,551 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:11,551 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:11,551 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:10:11,561 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:10:12,428 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2018-10-02 12:10:12,428 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:12,432 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:12,687 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:12,708 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:12,708 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-10-02 12:10:12,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-02 12:10:12,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-02 12:10:12,712 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:12,712 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 66 states. [2018-10-02 12:10:13,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:13,078 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2018-10-02 12:10:13,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-02 12:10:13,079 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 130 [2018-10-02 12:10:13,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:13,080 INFO L225 Difference]: With dead ends: 135 [2018-10-02 12:10:13,080 INFO L226 Difference]: Without dead ends: 133 [2018-10-02 12:10:13,080 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.2s impTime [2018-10-02 12:10:13,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-10-02 12:10:13,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-10-02 12:10:13,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-10-02 12:10:13,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2018-10-02 12:10:13,083 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 130 [2018-10-02 12:10:13,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:13,083 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2018-10-02 12:10:13,083 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-02 12:10:13,083 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2018-10-02 12:10:13,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-02 12:10:13,084 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:13,084 INFO L375 BasicCegarLoop]: trace histogram [65, 64, 1, 1, 1] [2018-10-02 12:10:13,084 INFO L423 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:13,084 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:13,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1373610425, now seen corresponding path program 64 times [2018-10-02 12:10:13,085 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:13,085 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:13,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:13,085 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:13,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:13,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:15,007 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:15,007 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:15,008 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:10:15,017 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:10:15,100 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:10:15,101 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:15,105 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:15,628 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:15,649 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:15,649 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-10-02 12:10:15,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-02 12:10:15,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-02 12:10:15,650 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:15,650 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 67 states. [2018-10-02 12:10:16,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:16,091 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-10-02 12:10:16,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-02 12:10:16,092 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 132 [2018-10-02 12:10:16,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:16,093 INFO L225 Difference]: With dead ends: 137 [2018-10-02 12:10:16,093 INFO L226 Difference]: Without dead ends: 135 [2018-10-02 12:10:16,093 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.7s impTime [2018-10-02 12:10:16,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-10-02 12:10:16,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-10-02 12:10:16,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-10-02 12:10:16,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-10-02 12:10:16,096 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 132 [2018-10-02 12:10:16,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:16,096 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-10-02 12:10:16,097 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-02 12:10:16,097 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-10-02 12:10:16,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-02 12:10:16,097 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:16,097 INFO L375 BasicCegarLoop]: trace histogram [66, 65, 1, 1, 1] [2018-10-02 12:10:16,098 INFO L423 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:16,098 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:16,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1484606463, now seen corresponding path program 65 times [2018-10-02 12:10:16,098 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:16,098 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:16,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:16,099 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:16,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:16,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:17,924 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:17,925 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:17,925 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:10:17,932 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:10:20,860 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2018-10-02 12:10:20,860 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:20,865 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:21,110 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:21,134 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:21,134 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-10-02 12:10:21,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-02 12:10:21,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-02 12:10:21,135 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:21,135 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 68 states. [2018-10-02 12:10:21,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:21,789 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2018-10-02 12:10:21,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-02 12:10:21,789 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 134 [2018-10-02 12:10:21,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:21,790 INFO L225 Difference]: With dead ends: 139 [2018-10-02 12:10:21,790 INFO L226 Difference]: Without dead ends: 137 [2018-10-02 12:10:21,790 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.6s impTime [2018-10-02 12:10:21,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-10-02 12:10:21,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-10-02 12:10:21,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-10-02 12:10:21,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 137 transitions. [2018-10-02 12:10:21,793 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 137 transitions. Word has length 134 [2018-10-02 12:10:21,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:21,793 INFO L480 AbstractCegarLoop]: Abstraction has 137 states and 137 transitions. [2018-10-02 12:10:21,793 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-02 12:10:21,793 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 137 transitions. [2018-10-02 12:10:21,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-02 12:10:21,793 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:21,793 INFO L375 BasicCegarLoop]: trace histogram [67, 66, 1, 1, 1] [2018-10-02 12:10:21,794 INFO L423 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:21,794 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:21,794 INFO L82 PathProgramCache]: Analyzing trace with hash -777616581, now seen corresponding path program 66 times [2018-10-02 12:10:21,794 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:21,794 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:21,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:21,795 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:21,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:21,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:23,067 INFO L134 CoverageAnalysis]: Checked inductivity of 4422 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:23,067 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:23,067 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:10:23,074 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:10:23,864 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2018-10-02 12:10:23,864 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:23,869 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:24,149 INFO L134 CoverageAnalysis]: Checked inductivity of 4422 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:24,170 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:24,171 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 68 [2018-10-02 12:10:24,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-10-02 12:10:24,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-10-02 12:10:24,172 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:24,172 INFO L87 Difference]: Start difference. First operand 137 states and 137 transitions. Second operand 69 states. [2018-10-02 12:10:24,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:24,550 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-10-02 12:10:24,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-02 12:10:24,550 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 136 [2018-10-02 12:10:24,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:24,551 INFO L225 Difference]: With dead ends: 141 [2018-10-02 12:10:24,551 INFO L226 Difference]: Without dead ends: 139 [2018-10-02 12:10:24,551 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.0s impTime [2018-10-02 12:10:24,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-10-02 12:10:24,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-10-02 12:10:24,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-10-02 12:10:24,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2018-10-02 12:10:24,555 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 136 [2018-10-02 12:10:24,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:24,555 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2018-10-02 12:10:24,555 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-10-02 12:10:24,555 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2018-10-02 12:10:24,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-02 12:10:24,556 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:24,556 INFO L375 BasicCegarLoop]: trace histogram [68, 67, 1, 1, 1] [2018-10-02 12:10:24,556 INFO L423 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:24,556 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:24,556 INFO L82 PathProgramCache]: Analyzing trace with hash 34827253, now seen corresponding path program 67 times [2018-10-02 12:10:24,556 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:24,556 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:24,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:24,557 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:24,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:24,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:26,535 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:26,535 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:26,535 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:10:26,542 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:10:26,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:26,615 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:27,007 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:27,027 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:27,027 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-10-02 12:10:27,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-02 12:10:27,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-02 12:10:27,028 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:27,028 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 70 states. [2018-10-02 12:10:27,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:27,489 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-10-02 12:10:27,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-02 12:10:27,489 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 138 [2018-10-02 12:10:27,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:27,490 INFO L225 Difference]: With dead ends: 143 [2018-10-02 12:10:27,490 INFO L226 Difference]: Without dead ends: 141 [2018-10-02 12:10:27,490 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.7s impTime [2018-10-02 12:10:27,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-10-02 12:10:27,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-10-02 12:10:27,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-10-02 12:10:27,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2018-10-02 12:10:27,497 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 138 [2018-10-02 12:10:27,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:27,497 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2018-10-02 12:10:27,498 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-02 12:10:27,498 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2018-10-02 12:10:27,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-02 12:10:27,498 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:27,498 INFO L375 BasicCegarLoop]: trace histogram [69, 68, 1, 1, 1] [2018-10-02 12:10:27,499 INFO L423 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:27,499 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:27,499 INFO L82 PathProgramCache]: Analyzing trace with hash -890696145, now seen corresponding path program 68 times [2018-10-02 12:10:27,499 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:27,499 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:27,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:27,500 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:10:27,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:27,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:29,491 INFO L134 CoverageAnalysis]: Checked inductivity of 4692 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:29,492 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:29,492 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:10:29,500 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:10:29,570 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:10:29,570 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:29,573 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:29,804 INFO L134 CoverageAnalysis]: Checked inductivity of 4692 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:29,824 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:29,824 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-10-02 12:10:29,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-02 12:10:29,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-02 12:10:29,826 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:29,826 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 71 states. [2018-10-02 12:10:30,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:30,312 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-10-02 12:10:30,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-02 12:10:30,312 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 140 [2018-10-02 12:10:30,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:30,313 INFO L225 Difference]: With dead ends: 145 [2018-10-02 12:10:30,313 INFO L226 Difference]: Without dead ends: 143 [2018-10-02 12:10:30,313 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.7s impTime [2018-10-02 12:10:30,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-10-02 12:10:30,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-10-02 12:10:30,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-10-02 12:10:30,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2018-10-02 12:10:30,316 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 140 [2018-10-02 12:10:30,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:30,316 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2018-10-02 12:10:30,316 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-02 12:10:30,316 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2018-10-02 12:10:30,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-02 12:10:30,317 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:30,317 INFO L375 BasicCegarLoop]: trace histogram [70, 69, 1, 1, 1] [2018-10-02 12:10:30,317 INFO L423 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:30,317 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:30,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1260451351, now seen corresponding path program 69 times [2018-10-02 12:10:30,318 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:30,318 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:30,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:30,318 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:30,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:30,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:32,767 INFO L134 CoverageAnalysis]: Checked inductivity of 4830 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:32,768 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:32,768 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:10:32,775 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:10:33,927 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2018-10-02 12:10:33,927 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:33,932 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:34,409 INFO L134 CoverageAnalysis]: Checked inductivity of 4830 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:34,430 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:34,431 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2018-10-02 12:10:34,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-02 12:10:34,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-02 12:10:34,431 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:34,432 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand 72 states. [2018-10-02 12:10:34,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:34,938 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2018-10-02 12:10:34,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-02 12:10:34,940 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 142 [2018-10-02 12:10:34,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:34,941 INFO L225 Difference]: With dead ends: 147 [2018-10-02 12:10:34,941 INFO L226 Difference]: Without dead ends: 145 [2018-10-02 12:10:34,941 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 2.2s impTime [2018-10-02 12:10:34,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-10-02 12:10:34,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-10-02 12:10:34,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-10-02 12:10:34,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2018-10-02 12:10:34,944 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 142 [2018-10-02 12:10:34,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:34,944 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2018-10-02 12:10:34,944 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-02 12:10:34,944 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2018-10-02 12:10:34,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-02 12:10:34,945 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:34,945 INFO L375 BasicCegarLoop]: trace histogram [71, 70, 1, 1, 1] [2018-10-02 12:10:34,945 INFO L423 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:34,945 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:34,946 INFO L82 PathProgramCache]: Analyzing trace with hash -112918749, now seen corresponding path program 70 times [2018-10-02 12:10:34,946 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:34,946 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:34,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:34,946 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:34,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:34,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:37,478 INFO L134 CoverageAnalysis]: Checked inductivity of 4970 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:37,478 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:37,479 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:10:37,486 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:10:37,553 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:10:37,553 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:37,568 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:37,801 INFO L134 CoverageAnalysis]: Checked inductivity of 4970 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:37,821 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:37,821 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2018-10-02 12:10:37,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-02 12:10:37,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-02 12:10:37,822 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:37,822 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand 73 states. [2018-10-02 12:10:38,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:38,314 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-10-02 12:10:38,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-02 12:10:38,315 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 144 [2018-10-02 12:10:38,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:38,316 INFO L225 Difference]: With dead ends: 149 [2018-10-02 12:10:38,316 INFO L226 Difference]: Without dead ends: 147 [2018-10-02 12:10:38,316 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.2s impTime [2018-10-02 12:10:38,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-10-02 12:10:38,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-10-02 12:10:38,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-10-02 12:10:38,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2018-10-02 12:10:38,319 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 144 [2018-10-02 12:10:38,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:38,320 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2018-10-02 12:10:38,320 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-02 12:10:38,320 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2018-10-02 12:10:38,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-02 12:10:38,321 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:38,321 INFO L375 BasicCegarLoop]: trace histogram [72, 71, 1, 1, 1] [2018-10-02 12:10:38,321 INFO L423 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:38,321 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:38,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1140683299, now seen corresponding path program 71 times [2018-10-02 12:10:38,321 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:38,322 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:38,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:38,322 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:38,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:38,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:40,216 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:40,216 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:40,216 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:10:40,223 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:10:44,358 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 72 check-sat command(s) [2018-10-02 12:10:44,359 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:44,365 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:44,636 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:44,660 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:44,660 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2018-10-02 12:10:44,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-02 12:10:44,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-02 12:10:44,661 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:44,661 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 74 states. [2018-10-02 12:10:45,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:45,165 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2018-10-02 12:10:45,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-02 12:10:45,166 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 146 [2018-10-02 12:10:45,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:45,167 INFO L225 Difference]: With dead ends: 151 [2018-10-02 12:10:45,167 INFO L226 Difference]: Without dead ends: 149 [2018-10-02 12:10:45,167 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.7s impTime [2018-10-02 12:10:45,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-10-02 12:10:45,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-10-02 12:10:45,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-10-02 12:10:45,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 149 transitions. [2018-10-02 12:10:45,171 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 149 transitions. Word has length 146 [2018-10-02 12:10:45,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:45,171 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 149 transitions. [2018-10-02 12:10:45,171 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-02 12:10:45,171 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 149 transitions. [2018-10-02 12:10:45,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-02 12:10:45,172 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:45,172 INFO L375 BasicCegarLoop]: trace histogram [73, 72, 1, 1, 1] [2018-10-02 12:10:45,172 INFO L423 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:45,173 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:45,173 INFO L82 PathProgramCache]: Analyzing trace with hash -979937769, now seen corresponding path program 72 times [2018-10-02 12:10:45,173 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:45,173 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:45,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:45,174 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:45,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:45,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:46,517 INFO L134 CoverageAnalysis]: Checked inductivity of 5256 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:46,517 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:46,518 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:10:46,525 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:10:47,608 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2018-10-02 12:10:47,608 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:47,613 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:47,905 INFO L134 CoverageAnalysis]: Checked inductivity of 5256 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:47,927 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:47,928 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 74 [2018-10-02 12:10:47,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-10-02 12:10:47,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-10-02 12:10:47,929 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:47,929 INFO L87 Difference]: Start difference. First operand 149 states and 149 transitions. Second operand 75 states. [2018-10-02 12:10:48,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:48,285 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2018-10-02 12:10:48,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-02 12:10:48,286 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 148 [2018-10-02 12:10:48,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:48,287 INFO L225 Difference]: With dead ends: 153 [2018-10-02 12:10:48,287 INFO L226 Difference]: Without dead ends: 151 [2018-10-02 12:10:48,287 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.1s impTime [2018-10-02 12:10:48,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-10-02 12:10:48,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-10-02 12:10:48,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-10-02 12:10:48,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2018-10-02 12:10:48,290 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 148 [2018-10-02 12:10:48,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:48,291 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2018-10-02 12:10:48,291 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-10-02 12:10:48,291 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2018-10-02 12:10:48,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-10-02 12:10:48,292 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:48,292 INFO L375 BasicCegarLoop]: trace histogram [74, 73, 1, 1, 1] [2018-10-02 12:10:48,292 INFO L423 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:48,292 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:48,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1122306095, now seen corresponding path program 73 times [2018-10-02 12:10:48,292 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:48,293 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:48,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:48,293 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:48,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:48,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:50,770 INFO L134 CoverageAnalysis]: Checked inductivity of 5402 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:50,770 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:50,770 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:10:50,778 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:10:50,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:50,853 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:51,138 INFO L134 CoverageAnalysis]: Checked inductivity of 5402 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:51,158 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:51,159 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2018-10-02 12:10:51,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-02 12:10:51,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-02 12:10:51,160 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:51,160 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 76 states. [2018-10-02 12:10:51,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:51,694 INFO L93 Difference]: Finished difference Result 155 states and 155 transitions. [2018-10-02 12:10:51,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-02 12:10:51,694 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 150 [2018-10-02 12:10:51,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:51,695 INFO L225 Difference]: With dead ends: 155 [2018-10-02 12:10:51,695 INFO L226 Difference]: Without dead ends: 153 [2018-10-02 12:10:51,695 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.2s impTime [2018-10-02 12:10:51,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-10-02 12:10:51,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-10-02 12:10:51,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-10-02 12:10:51,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 153 transitions. [2018-10-02 12:10:51,697 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 153 transitions. Word has length 150 [2018-10-02 12:10:51,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:51,698 INFO L480 AbstractCegarLoop]: Abstraction has 153 states and 153 transitions. [2018-10-02 12:10:51,698 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-02 12:10:51,698 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 153 transitions. [2018-10-02 12:10:51,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-10-02 12:10:51,698 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:51,698 INFO L375 BasicCegarLoop]: trace histogram [75, 74, 1, 1, 1] [2018-10-02 12:10:51,699 INFO L423 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:51,699 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:51,699 INFO L82 PathProgramCache]: Analyzing trace with hash -499313909, now seen corresponding path program 74 times [2018-10-02 12:10:51,699 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:51,699 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:51,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:51,699 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:10:51,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:51,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:53,365 INFO L134 CoverageAnalysis]: Checked inductivity of 5550 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:53,365 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:53,365 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:10:53,372 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:10:53,448 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:10:53,448 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:53,451 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:53,741 INFO L134 CoverageAnalysis]: Checked inductivity of 5550 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:53,761 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:53,761 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2018-10-02 12:10:53,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-10-02 12:10:53,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-10-02 12:10:53,762 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:53,762 INFO L87 Difference]: Start difference. First operand 153 states and 153 transitions. Second operand 77 states. [2018-10-02 12:10:54,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:54,163 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-10-02 12:10:54,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-02 12:10:54,164 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 152 [2018-10-02 12:10:54,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:54,164 INFO L225 Difference]: With dead ends: 157 [2018-10-02 12:10:54,164 INFO L226 Difference]: Without dead ends: 155 [2018-10-02 12:10:54,165 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.4s impTime [2018-10-02 12:10:54,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-10-02 12:10:54,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-10-02 12:10:54,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-10-02 12:10:54,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 155 transitions. [2018-10-02 12:10:54,167 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 155 transitions. Word has length 152 [2018-10-02 12:10:54,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:54,168 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 155 transitions. [2018-10-02 12:10:54,168 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-10-02 12:10:54,168 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 155 transitions. [2018-10-02 12:10:54,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-10-02 12:10:54,168 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:54,168 INFO L375 BasicCegarLoop]: trace histogram [76, 75, 1, 1, 1] [2018-10-02 12:10:54,169 INFO L423 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:54,169 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:54,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1195722693, now seen corresponding path program 75 times [2018-10-02 12:10:54,169 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:54,169 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:54,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:54,169 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:54,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:54,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:56,309 INFO L134 CoverageAnalysis]: Checked inductivity of 5700 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:56,309 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:56,309 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:10:56,317 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:10:57,921 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 76 check-sat command(s) [2018-10-02 12:10:57,921 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:57,927 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:58,184 INFO L134 CoverageAnalysis]: Checked inductivity of 5700 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:10:58,206 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:58,206 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2018-10-02 12:10:58,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-10-02 12:10:58,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-10-02 12:10:58,207 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:58,207 INFO L87 Difference]: Start difference. First operand 155 states and 155 transitions. Second operand 78 states. [2018-10-02 12:10:58,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:58,569 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2018-10-02 12:10:58,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-10-02 12:10:58,569 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 154 [2018-10-02 12:10:58,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:58,570 INFO L225 Difference]: With dead ends: 159 [2018-10-02 12:10:58,570 INFO L226 Difference]: Without dead ends: 157 [2018-10-02 12:10:58,571 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.9s impTime [2018-10-02 12:10:58,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-10-02 12:10:58,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-10-02 12:10:58,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-10-02 12:10:58,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 157 transitions. [2018-10-02 12:10:58,574 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 157 transitions. Word has length 154 [2018-10-02 12:10:58,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:58,574 INFO L480 AbstractCegarLoop]: Abstraction has 157 states and 157 transitions. [2018-10-02 12:10:58,574 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-10-02 12:10:58,574 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 157 transitions. [2018-10-02 12:10:58,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-10-02 12:10:58,575 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:58,575 INFO L375 BasicCegarLoop]: trace histogram [77, 76, 1, 1, 1] [2018-10-02 12:10:58,575 INFO L423 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:58,575 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:58,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1961675265, now seen corresponding path program 76 times [2018-10-02 12:10:58,575 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:58,575 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:58,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:58,576 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:58,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:58,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:00,774 INFO L134 CoverageAnalysis]: Checked inductivity of 5852 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:00,774 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:11:00,774 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:11:00,783 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:11:00,857 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:11:00,857 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:11:00,860 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:11:01,136 INFO L134 CoverageAnalysis]: Checked inductivity of 5852 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:01,156 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:11:01,156 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2018-10-02 12:11:01,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-10-02 12:11:01,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-10-02 12:11:01,157 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:11:01,157 INFO L87 Difference]: Start difference. First operand 157 states and 157 transitions. Second operand 79 states. [2018-10-02 12:11:01,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:11:01,813 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2018-10-02 12:11:01,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-10-02 12:11:01,814 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 156 [2018-10-02 12:11:01,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:11:01,815 INFO L225 Difference]: With dead ends: 161 [2018-10-02 12:11:01,815 INFO L226 Difference]: Without dead ends: 159 [2018-10-02 12:11:01,815 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.9s impTime [2018-10-02 12:11:01,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-10-02 12:11:01,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-10-02 12:11:01,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-10-02 12:11:01,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2018-10-02 12:11:01,818 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 156 [2018-10-02 12:11:01,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:11:01,818 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2018-10-02 12:11:01,818 INFO L481 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-10-02 12:11:01,818 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2018-10-02 12:11:01,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-02 12:11:01,819 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:11:01,819 INFO L375 BasicCegarLoop]: trace histogram [78, 77, 1, 1, 1] [2018-10-02 12:11:01,819 INFO L423 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:11:01,819 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:11:01,819 INFO L82 PathProgramCache]: Analyzing trace with hash 320765369, now seen corresponding path program 77 times [2018-10-02 12:11:01,819 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:11:01,820 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:11:01,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:01,820 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:11:01,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:01,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:04,448 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:04,449 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:11:04,449 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:11:04,457 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:11:10,240 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 78 check-sat command(s) [2018-10-02 12:11:10,240 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:11:10,247 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:11:10,508 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:10,534 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:11:10,534 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2018-10-02 12:11:10,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-02 12:11:10,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-02 12:11:10,535 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:11:10,535 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand 80 states. [2018-10-02 12:11:11,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:11:11,214 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2018-10-02 12:11:11,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-10-02 12:11:11,214 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 158 [2018-10-02 12:11:11,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:11:11,215 INFO L225 Difference]: With dead ends: 163 [2018-10-02 12:11:11,215 INFO L226 Difference]: Without dead ends: 161 [2018-10-02 12:11:11,215 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.3s impTime [2018-10-02 12:11:11,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-10-02 12:11:11,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-10-02 12:11:11,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-10-02 12:11:11,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions. [2018-10-02 12:11:11,222 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 158 [2018-10-02 12:11:11,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:11:11,222 INFO L480 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions. [2018-10-02 12:11:11,222 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-02 12:11:11,222 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions. [2018-10-02 12:11:11,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-10-02 12:11:11,223 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:11:11,223 INFO L375 BasicCegarLoop]: trace histogram [79, 78, 1, 1, 1] [2018-10-02 12:11:11,223 INFO L423 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:11:11,223 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:11:11,223 INFO L82 PathProgramCache]: Analyzing trace with hash -982073613, now seen corresponding path program 78 times [2018-10-02 12:11:11,224 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:11:11,224 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:11:11,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:11,224 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:11:11,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:11,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:13,373 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:13,373 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:11:13,373 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:11:13,381 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:11:14,808 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2018-10-02 12:11:14,808 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:11:14,813 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:11:15,098 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:15,122 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:11:15,122 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 80 [2018-10-02 12:11:15,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-10-02 12:11:15,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-10-02 12:11:15,123 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:11:15,123 INFO L87 Difference]: Start difference. First operand 161 states and 161 transitions. Second operand 81 states. [2018-10-02 12:11:15,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:11:15,516 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2018-10-02 12:11:15,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-02 12:11:15,517 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 160 [2018-10-02 12:11:15,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:11:15,518 INFO L225 Difference]: With dead ends: 165 [2018-10-02 12:11:15,518 INFO L226 Difference]: Without dead ends: 163 [2018-10-02 12:11:15,518 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.9s impTime [2018-10-02 12:11:15,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-10-02 12:11:15,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-10-02 12:11:15,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-10-02 12:11:15,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 163 transitions. [2018-10-02 12:11:15,522 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 163 transitions. Word has length 160 [2018-10-02 12:11:15,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:11:15,522 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 163 transitions. [2018-10-02 12:11:15,522 INFO L481 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-10-02 12:11:15,522 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 163 transitions. [2018-10-02 12:11:15,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-10-02 12:11:15,523 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:11:15,523 INFO L375 BasicCegarLoop]: trace histogram [80, 79, 1, 1, 1] [2018-10-02 12:11:15,523 INFO L423 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:11:15,524 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:11:15,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1120115117, now seen corresponding path program 79 times [2018-10-02 12:11:15,524 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:11:15,524 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:11:15,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:15,525 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:11:15,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:15,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:17,320 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:17,320 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:11:17,320 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:11:17,327 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:11:17,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:17,407 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:11:17,784 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:17,804 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:11:17,804 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2018-10-02 12:11:17,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-10-02 12:11:17,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-10-02 12:11:17,805 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:11:17,805 INFO L87 Difference]: Start difference. First operand 163 states and 163 transitions. Second operand 82 states. [2018-10-02 12:11:18,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:11:18,392 INFO L93 Difference]: Finished difference Result 167 states and 167 transitions. [2018-10-02 12:11:18,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-10-02 12:11:18,392 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 162 [2018-10-02 12:11:18,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:11:18,393 INFO L225 Difference]: With dead ends: 167 [2018-10-02 12:11:18,393 INFO L226 Difference]: Without dead ends: 165 [2018-10-02 12:11:18,393 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.5s impTime [2018-10-02 12:11:18,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-10-02 12:11:18,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-10-02 12:11:18,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-10-02 12:11:18,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 165 transitions. [2018-10-02 12:11:18,396 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 165 transitions. Word has length 162 [2018-10-02 12:11:18,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:11:18,396 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 165 transitions. [2018-10-02 12:11:18,396 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-10-02 12:11:18,396 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 165 transitions. [2018-10-02 12:11:18,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-10-02 12:11:18,397 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:11:18,397 INFO L375 BasicCegarLoop]: trace histogram [81, 80, 1, 1, 1] [2018-10-02 12:11:18,397 INFO L423 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:11:18,398 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:11:18,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1606111769, now seen corresponding path program 80 times [2018-10-02 12:11:18,398 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:11:18,398 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:11:18,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:18,399 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:11:18,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:18,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:20,977 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:20,977 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:11:20,978 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:11:20,985 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:11:21,065 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:11:21,065 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:11:21,069 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:11:21,341 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:21,361 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:11:21,362 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 82 [2018-10-02 12:11:21,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-10-02 12:11:21,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-10-02 12:11:21,363 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:11:21,363 INFO L87 Difference]: Start difference. First operand 165 states and 165 transitions. Second operand 83 states. [2018-10-02 12:11:21,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:11:21,975 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-10-02 12:11:21,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-10-02 12:11:21,976 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 164 [2018-10-02 12:11:21,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:11:21,976 INFO L225 Difference]: With dead ends: 169 [2018-10-02 12:11:21,976 INFO L226 Difference]: Without dead ends: 167 [2018-10-02 12:11:21,977 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.3s impTime [2018-10-02 12:11:21,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-10-02 12:11:21,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-10-02 12:11:21,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-10-02 12:11:21,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2018-10-02 12:11:21,979 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 164 [2018-10-02 12:11:21,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:11:21,979 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2018-10-02 12:11:21,979 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-10-02 12:11:21,980 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2018-10-02 12:11:21,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-10-02 12:11:21,980 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:11:21,980 INFO L375 BasicCegarLoop]: trace histogram [82, 81, 1, 1, 1] [2018-10-02 12:11:21,980 INFO L423 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:11:21,981 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:11:21,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1580098655, now seen corresponding path program 81 times [2018-10-02 12:11:21,981 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:11:21,981 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:11:21,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:21,982 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:11:21,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:22,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:24,541 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:24,541 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:11:24,541 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:11:24,548 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:11:26,790 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 82 check-sat command(s) [2018-10-02 12:11:26,790 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:11:26,797 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:11:27,088 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:27,112 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:11:27,112 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2018-10-02 12:11:27,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-10-02 12:11:27,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-10-02 12:11:27,113 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:11:27,113 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 84 states. [2018-10-02 12:11:27,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:11:27,709 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2018-10-02 12:11:27,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-10-02 12:11:27,709 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 166 [2018-10-02 12:11:27,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:11:27,710 INFO L225 Difference]: With dead ends: 171 [2018-10-02 12:11:27,710 INFO L226 Difference]: Without dead ends: 169 [2018-10-02 12:11:27,710 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.2s impTime [2018-10-02 12:11:27,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-10-02 12:11:27,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-10-02 12:11:27,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-10-02 12:11:27,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 169 transitions. [2018-10-02 12:11:27,713 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 169 transitions. Word has length 166 [2018-10-02 12:11:27,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:11:27,713 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 169 transitions. [2018-10-02 12:11:27,714 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-10-02 12:11:27,714 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 169 transitions. [2018-10-02 12:11:27,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-10-02 12:11:27,714 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:11:27,714 INFO L375 BasicCegarLoop]: trace histogram [83, 82, 1, 1, 1] [2018-10-02 12:11:27,715 INFO L423 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:11:27,715 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:11:27,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1943667419, now seen corresponding path program 82 times [2018-10-02 12:11:27,715 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:11:27,715 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:11:27,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:27,715 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:11:27,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:27,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:29,872 INFO L134 CoverageAnalysis]: Checked inductivity of 6806 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:29,873 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:11:29,873 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:11:29,882 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:11:29,967 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:11:29,968 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:11:29,971 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:11:30,353 INFO L134 CoverageAnalysis]: Checked inductivity of 6806 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:30,373 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:11:30,374 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 84 [2018-10-02 12:11:30,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-10-02 12:11:30,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-10-02 12:11:30,375 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:11:30,375 INFO L87 Difference]: Start difference. First operand 169 states and 169 transitions. Second operand 85 states. [2018-10-02 12:11:30,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:11:30,811 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2018-10-02 12:11:30,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-10-02 12:11:30,811 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 168 [2018-10-02 12:11:30,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:11:30,813 INFO L225 Difference]: With dead ends: 173 [2018-10-02 12:11:30,813 INFO L226 Difference]: Without dead ends: 171 [2018-10-02 12:11:30,813 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.8s impTime [2018-10-02 12:11:30,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-10-02 12:11:30,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-10-02 12:11:30,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-10-02 12:11:30,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2018-10-02 12:11:30,817 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 168 [2018-10-02 12:11:30,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:11:30,817 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2018-10-02 12:11:30,817 INFO L481 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-10-02 12:11:30,817 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2018-10-02 12:11:30,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-02 12:11:30,818 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:11:30,818 INFO L375 BasicCegarLoop]: trace histogram [84, 83, 1, 1, 1] [2018-10-02 12:11:30,818 INFO L423 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:11:30,818 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:11:30,818 INFO L82 PathProgramCache]: Analyzing trace with hash -446332011, now seen corresponding path program 83 times [2018-10-02 12:11:30,819 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:11:30,819 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:11:30,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:30,819 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:11:30,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:30,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:33,316 INFO L134 CoverageAnalysis]: Checked inductivity of 6972 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:33,316 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:11:33,317 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:11:33,323 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:11:41,224 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 84 check-sat command(s) [2018-10-02 12:11:41,224 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:11:41,231 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:11:41,530 INFO L134 CoverageAnalysis]: Checked inductivity of 6972 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:41,556 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:11:41,556 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2018-10-02 12:11:41,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-10-02 12:11:41,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-10-02 12:11:41,557 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:11:41,557 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 86 states. [2018-10-02 12:11:42,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:11:42,003 INFO L93 Difference]: Finished difference Result 175 states and 175 transitions. [2018-10-02 12:11:42,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-10-02 12:11:42,004 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 170 [2018-10-02 12:11:42,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:11:42,005 INFO L225 Difference]: With dead ends: 175 [2018-10-02 12:11:42,005 INFO L226 Difference]: Without dead ends: 173 [2018-10-02 12:11:42,005 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.2s impTime [2018-10-02 12:11:42,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-10-02 12:11:42,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-10-02 12:11:42,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-10-02 12:11:42,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 173 transitions. [2018-10-02 12:11:42,008 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 173 transitions. Word has length 170 [2018-10-02 12:11:42,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:11:42,009 INFO L480 AbstractCegarLoop]: Abstraction has 173 states and 173 transitions. [2018-10-02 12:11:42,009 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-10-02 12:11:42,009 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 173 transitions. [2018-10-02 12:11:42,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-10-02 12:11:42,010 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:11:42,010 INFO L375 BasicCegarLoop]: trace histogram [85, 84, 1, 1, 1] [2018-10-02 12:11:42,010 INFO L423 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:11:42,010 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:11:42,010 INFO L82 PathProgramCache]: Analyzing trace with hash 571719119, now seen corresponding path program 84 times [2018-10-02 12:11:42,010 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:11:42,011 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:11:42,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:42,011 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:11:42,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:42,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:43,469 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:43,469 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:11:43,469 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:11:43,479 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:11:45,402 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 85 check-sat command(s) [2018-10-02 12:11:45,402 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:11:45,408 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:11:45,712 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:45,735 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:11:45,735 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 86 [2018-10-02 12:11:45,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-10-02 12:11:45,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-10-02 12:11:45,737 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:11:45,737 INFO L87 Difference]: Start difference. First operand 173 states and 173 transitions. Second operand 87 states. [2018-10-02 12:11:46,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:11:46,638 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-10-02 12:11:46,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-10-02 12:11:46,638 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 172 [2018-10-02 12:11:46,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:11:46,639 INFO L225 Difference]: With dead ends: 177 [2018-10-02 12:11:46,639 INFO L226 Difference]: Without dead ends: 175 [2018-10-02 12:11:46,639 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.2s impTime [2018-10-02 12:11:46,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-10-02 12:11:46,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-10-02 12:11:46,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-10-02 12:11:46,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 175 transitions. [2018-10-02 12:11:46,643 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 175 transitions. Word has length 172 [2018-10-02 12:11:46,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:11:46,643 INFO L480 AbstractCegarLoop]: Abstraction has 175 states and 175 transitions. [2018-10-02 12:11:46,643 INFO L481 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-10-02 12:11:46,643 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 175 transitions. [2018-10-02 12:11:46,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-10-02 12:11:46,644 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:11:46,644 INFO L375 BasicCegarLoop]: trace histogram [86, 85, 1, 1, 1] [2018-10-02 12:11:46,646 INFO L423 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:11:46,646 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:11:46,646 INFO L82 PathProgramCache]: Analyzing trace with hash -333688439, now seen corresponding path program 85 times [2018-10-02 12:11:46,646 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:11:46,646 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:11:46,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:46,647 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:11:46,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:46,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:47,936 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:47,937 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:11:47,937 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:11:47,945 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:11:48,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:48,032 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:11:48,333 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:48,356 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:11:48,356 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2018-10-02 12:11:48,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-02 12:11:48,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-02 12:11:48,358 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:11:48,358 INFO L87 Difference]: Start difference. First operand 175 states and 175 transitions. Second operand 88 states. [2018-10-02 12:11:48,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:11:48,898 INFO L93 Difference]: Finished difference Result 179 states and 179 transitions. [2018-10-02 12:11:48,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-10-02 12:11:48,899 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 174 [2018-10-02 12:11:48,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:11:48,900 INFO L225 Difference]: With dead ends: 179 [2018-10-02 12:11:48,900 INFO L226 Difference]: Without dead ends: 177 [2018-10-02 12:11:48,900 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 0.9s impTime [2018-10-02 12:11:48,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-10-02 12:11:48,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-10-02 12:11:48,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-10-02 12:11:48,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 177 transitions. [2018-10-02 12:11:48,903 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 177 transitions. Word has length 174 [2018-10-02 12:11:48,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:11:48,904 INFO L480 AbstractCegarLoop]: Abstraction has 177 states and 177 transitions. [2018-10-02 12:11:48,904 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-10-02 12:11:48,904 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 177 transitions. [2018-10-02 12:11:48,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-10-02 12:11:48,905 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:11:48,905 INFO L375 BasicCegarLoop]: trace histogram [87, 86, 1, 1, 1] [2018-10-02 12:11:48,905 INFO L423 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:11:48,905 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:11:48,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1448009411, now seen corresponding path program 86 times [2018-10-02 12:11:48,906 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:11:48,906 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:11:48,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:48,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:11:48,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:48,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:50,380 INFO L134 CoverageAnalysis]: Checked inductivity of 7482 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:50,381 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:11:50,381 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:11:50,388 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:11:50,470 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:11:50,470 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:11:50,474 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:11:50,765 INFO L134 CoverageAnalysis]: Checked inductivity of 7482 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:50,785 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:11:50,786 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 88 [2018-10-02 12:11:50,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-10-02 12:11:50,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-10-02 12:11:50,787 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:11:50,787 INFO L87 Difference]: Start difference. First operand 177 states and 177 transitions. Second operand 89 states. [2018-10-02 12:11:51,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:11:51,342 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2018-10-02 12:11:51,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-02 12:11:51,342 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 176 [2018-10-02 12:11:51,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:11:51,343 INFO L225 Difference]: With dead ends: 181 [2018-10-02 12:11:51,343 INFO L226 Difference]: Without dead ends: 179 [2018-10-02 12:11:51,343 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.1s impTime [2018-10-02 12:11:51,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-10-02 12:11:51,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-10-02 12:11:51,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-10-02 12:11:51,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2018-10-02 12:11:51,346 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 176 [2018-10-02 12:11:51,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:11:51,346 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2018-10-02 12:11:51,346 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-10-02 12:11:51,346 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2018-10-02 12:11:51,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-02 12:11:51,347 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:11:51,347 INFO L375 BasicCegarLoop]: trace histogram [88, 87, 1, 1, 1] [2018-10-02 12:11:51,347 INFO L423 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:11:51,347 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:11:51,347 INFO L82 PathProgramCache]: Analyzing trace with hash -32307843, now seen corresponding path program 87 times [2018-10-02 12:11:51,348 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:11:51,348 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:11:51,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:51,348 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:11:51,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:51,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:53,063 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:53,063 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:11:53,063 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:11:53,071 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:11:55,740 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 88 check-sat command(s) [2018-10-02 12:11:55,740 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:11:55,746 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:11:56,068 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:56,092 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:11:56,092 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2018-10-02 12:11:56,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-10-02 12:11:56,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-10-02 12:11:56,093 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:11:56,093 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand 90 states. [2018-10-02 12:11:56,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:11:56,610 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2018-10-02 12:11:56,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-10-02 12:11:56,611 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 178 [2018-10-02 12:11:56,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:11:56,611 INFO L225 Difference]: With dead ends: 183 [2018-10-02 12:11:56,612 INFO L226 Difference]: Without dead ends: 181 [2018-10-02 12:11:56,612 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.4s impTime [2018-10-02 12:11:56,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-10-02 12:11:56,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-10-02 12:11:56,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-10-02 12:11:56,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 181 transitions. [2018-10-02 12:11:56,615 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 181 transitions. Word has length 178 [2018-10-02 12:11:56,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:11:56,616 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 181 transitions. [2018-10-02 12:11:56,616 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-10-02 12:11:56,616 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 181 transitions. [2018-10-02 12:11:56,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-10-02 12:11:56,616 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:11:56,616 INFO L375 BasicCegarLoop]: trace histogram [89, 88, 1, 1, 1] [2018-10-02 12:11:56,617 INFO L423 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:11:56,617 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:11:56,617 INFO L82 PathProgramCache]: Analyzing trace with hash -983013961, now seen corresponding path program 88 times [2018-10-02 12:11:56,617 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:11:56,617 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:11:56,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:56,618 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:11:56,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:56,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:58,192 INFO L134 CoverageAnalysis]: Checked inductivity of 7832 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:58,192 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:11:58,192 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:11:58,204 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:11:58,290 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:11:58,290 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:11:58,294 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:11:58,617 INFO L134 CoverageAnalysis]: Checked inductivity of 7832 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:11:58,638 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:11:58,638 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 90 [2018-10-02 12:11:58,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-10-02 12:11:58,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-10-02 12:11:58,639 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:11:58,639 INFO L87 Difference]: Start difference. First operand 181 states and 181 transitions. Second operand 91 states. [2018-10-02 12:11:59,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:11:59,350 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2018-10-02 12:11:59,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-10-02 12:11:59,351 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 180 [2018-10-02 12:11:59,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:11:59,352 INFO L225 Difference]: With dead ends: 185 [2018-10-02 12:11:59,352 INFO L226 Difference]: Without dead ends: 183 [2018-10-02 12:11:59,352 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.3s impTime [2018-10-02 12:11:59,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-10-02 12:11:59,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-10-02 12:11:59,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-10-02 12:11:59,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 183 transitions. [2018-10-02 12:11:59,355 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 183 transitions. Word has length 180 [2018-10-02 12:11:59,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:11:59,355 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 183 transitions. [2018-10-02 12:11:59,355 INFO L481 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-10-02 12:11:59,355 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 183 transitions. [2018-10-02 12:11:59,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-10-02 12:11:59,356 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:11:59,356 INFO L375 BasicCegarLoop]: trace histogram [90, 89, 1, 1, 1] [2018-10-02 12:11:59,356 INFO L423 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:11:59,356 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:11:59,356 INFO L82 PathProgramCache]: Analyzing trace with hash 216440689, now seen corresponding path program 89 times [2018-10-02 12:11:59,356 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:11:59,357 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:11:59,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:59,357 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:11:59,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:59,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:12:00,530 INFO L134 CoverageAnalysis]: Checked inductivity of 8010 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:00,530 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:12:00,530 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:12:00,538 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:12:10,084 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 90 check-sat command(s) [2018-10-02 12:12:10,084 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:12:10,091 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:12:10,408 INFO L134 CoverageAnalysis]: Checked inductivity of 8010 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:10,433 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:12:10,434 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2018-10-02 12:12:10,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-10-02 12:12:10,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-10-02 12:12:10,435 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:12:10,435 INFO L87 Difference]: Start difference. First operand 183 states and 183 transitions. Second operand 92 states. [2018-10-02 12:12:10,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:12:10,898 INFO L93 Difference]: Finished difference Result 187 states and 187 transitions. [2018-10-02 12:12:10,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-10-02 12:12:10,898 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 182 [2018-10-02 12:12:10,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:12:10,899 INFO L225 Difference]: With dead ends: 187 [2018-10-02 12:12:10,899 INFO L226 Difference]: Without dead ends: 185 [2018-10-02 12:12:10,899 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.9s impTime [2018-10-02 12:12:10,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-10-02 12:12:10,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-10-02 12:12:10,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-10-02 12:12:10,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2018-10-02 12:12:10,902 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 182 [2018-10-02 12:12:10,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:12:10,902 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2018-10-02 12:12:10,902 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-10-02 12:12:10,902 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2018-10-02 12:12:10,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-10-02 12:12:10,903 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:12:10,903 INFO L375 BasicCegarLoop]: trace histogram [91, 90, 1, 1, 1] [2018-10-02 12:12:10,903 INFO L423 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:12:10,903 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:12:10,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1841124011, now seen corresponding path program 90 times [2018-10-02 12:12:10,904 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:12:10,904 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:12:10,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:12:10,904 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:12:10,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:12:10,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:12:12,387 INFO L134 CoverageAnalysis]: Checked inductivity of 8190 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:12,388 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:12:12,388 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:12:12,396 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:12:14,686 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 91 check-sat command(s) [2018-10-02 12:12:14,686 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:12:14,693 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:12:15,011 INFO L134 CoverageAnalysis]: Checked inductivity of 8190 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:15,035 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:12:15,035 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 92 [2018-10-02 12:12:15,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-10-02 12:12:15,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-10-02 12:12:15,036 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:12:15,036 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand 93 states. [2018-10-02 12:12:15,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:12:15,528 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2018-10-02 12:12:15,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-10-02 12:12:15,528 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 184 [2018-10-02 12:12:15,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:12:15,530 INFO L225 Difference]: With dead ends: 189 [2018-10-02 12:12:15,530 INFO L226 Difference]: Without dead ends: 187 [2018-10-02 12:12:15,530 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.1s impTime [2018-10-02 12:12:15,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-10-02 12:12:15,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-10-02 12:12:15,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-10-02 12:12:15,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2018-10-02 12:12:15,534 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 184 [2018-10-02 12:12:15,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:12:15,534 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2018-10-02 12:12:15,534 INFO L481 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-10-02 12:12:15,534 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2018-10-02 12:12:15,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-02 12:12:15,535 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:12:15,535 INFO L375 BasicCegarLoop]: trace histogram [92, 91, 1, 1, 1] [2018-10-02 12:12:15,536 INFO L423 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:12:15,536 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:12:15,536 INFO L82 PathProgramCache]: Analyzing trace with hash -206299291, now seen corresponding path program 91 times [2018-10-02 12:12:15,536 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:12:15,536 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:12:15,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:12:15,537 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:12:15,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:12:15,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:12:16,968 INFO L134 CoverageAnalysis]: Checked inductivity of 8372 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:16,968 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:12:16,968 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:12:16,977 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:12:17,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:12:17,077 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:12:17,405 INFO L134 CoverageAnalysis]: Checked inductivity of 8372 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:17,426 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:12:17,426 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2018-10-02 12:12:17,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-10-02 12:12:17,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-10-02 12:12:17,427 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:12:17,428 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand 94 states. [2018-10-02 12:12:17,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:12:17,926 INFO L93 Difference]: Finished difference Result 191 states and 191 transitions. [2018-10-02 12:12:17,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-02 12:12:17,927 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 186 [2018-10-02 12:12:17,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:12:17,928 INFO L225 Difference]: With dead ends: 191 [2018-10-02 12:12:17,928 INFO L226 Difference]: Without dead ends: 189 [2018-10-02 12:12:17,928 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.1s impTime [2018-10-02 12:12:17,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-10-02 12:12:17,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-10-02 12:12:17,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-10-02 12:12:17,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 189 transitions. [2018-10-02 12:12:17,932 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 189 transitions. Word has length 186 [2018-10-02 12:12:17,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:12:17,932 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 189 transitions. [2018-10-02 12:12:17,932 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-10-02 12:12:17,932 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 189 transitions. [2018-10-02 12:12:17,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-10-02 12:12:17,933 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:12:17,933 INFO L375 BasicCegarLoop]: trace histogram [93, 92, 1, 1, 1] [2018-10-02 12:12:17,933 INFO L423 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:12:17,934 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:12:17,934 INFO L82 PathProgramCache]: Analyzing trace with hash -685070945, now seen corresponding path program 92 times [2018-10-02 12:12:17,934 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:12:17,934 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:12:17,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:12:17,935 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:12:17,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:12:17,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:12:19,532 INFO L134 CoverageAnalysis]: Checked inductivity of 8556 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:19,533 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:12:19,533 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:12:19,539 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:12:19,633 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:12:19,633 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:12:19,637 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:12:20,012 INFO L134 CoverageAnalysis]: Checked inductivity of 8556 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:20,032 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:12:20,032 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 94 [2018-10-02 12:12:20,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-10-02 12:12:20,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-10-02 12:12:20,033 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:12:20,033 INFO L87 Difference]: Start difference. First operand 189 states and 189 transitions. Second operand 95 states. [2018-10-02 12:12:20,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:12:20,539 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2018-10-02 12:12:20,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-10-02 12:12:20,539 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 188 [2018-10-02 12:12:20,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:12:20,540 INFO L225 Difference]: With dead ends: 193 [2018-10-02 12:12:20,540 INFO L226 Difference]: Without dead ends: 191 [2018-10-02 12:12:20,541 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.3s impTime [2018-10-02 12:12:20,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-10-02 12:12:20,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-10-02 12:12:20,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-10-02 12:12:20,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 191 transitions. [2018-10-02 12:12:20,543 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 191 transitions. Word has length 188 [2018-10-02 12:12:20,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:12:20,544 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 191 transitions. [2018-10-02 12:12:20,544 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-10-02 12:12:20,544 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 191 transitions. [2018-10-02 12:12:20,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-10-02 12:12:20,544 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:12:20,545 INFO L375 BasicCegarLoop]: trace histogram [94, 93, 1, 1, 1] [2018-10-02 12:12:20,545 INFO L423 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:12:20,545 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:12:20,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1223129767, now seen corresponding path program 93 times [2018-10-02 12:12:20,545 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:12:20,545 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:12:20,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:12:20,546 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:12:20,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:12:20,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:12:22,141 INFO L134 CoverageAnalysis]: Checked inductivity of 8742 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:22,142 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:12:22,142 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:12:22,149 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:12:25,533 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 94 check-sat command(s) [2018-10-02 12:12:25,534 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:12:25,540 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:12:25,875 INFO L134 CoverageAnalysis]: Checked inductivity of 8742 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:25,898 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:12:25,898 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2018-10-02 12:12:25,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-10-02 12:12:25,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-10-02 12:12:25,899 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:12:25,899 INFO L87 Difference]: Start difference. First operand 191 states and 191 transitions. Second operand 96 states. [2018-10-02 12:12:26,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:12:26,563 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-10-02 12:12:26,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-10-02 12:12:26,563 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 190 [2018-10-02 12:12:26,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:12:26,564 INFO L225 Difference]: With dead ends: 195 [2018-10-02 12:12:26,564 INFO L226 Difference]: Without dead ends: 193 [2018-10-02 12:12:26,565 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.3s impTime [2018-10-02 12:12:26,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-10-02 12:12:26,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-10-02 12:12:26,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-10-02 12:12:26,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 193 transitions. [2018-10-02 12:12:26,567 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 193 transitions. Word has length 190 [2018-10-02 12:12:26,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:12:26,568 INFO L480 AbstractCegarLoop]: Abstraction has 193 states and 193 transitions. [2018-10-02 12:12:26,568 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-10-02 12:12:26,568 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 193 transitions. [2018-10-02 12:12:26,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-02 12:12:26,568 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:12:26,569 INFO L375 BasicCegarLoop]: trace histogram [95, 94, 1, 1, 1] [2018-10-02 12:12:26,569 INFO L423 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:12:26,569 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:12:26,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1393385107, now seen corresponding path program 94 times [2018-10-02 12:12:26,569 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:12:26,569 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:12:26,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:12:26,570 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:12:26,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:12:26,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:12:28,707 INFO L134 CoverageAnalysis]: Checked inductivity of 8930 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:28,707 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:12:28,707 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:12:28,715 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:12:28,811 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:12:28,811 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:12:28,815 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:12:29,150 INFO L134 CoverageAnalysis]: Checked inductivity of 8930 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:29,170 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:12:29,170 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 96 [2018-10-02 12:12:29,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-10-02 12:12:29,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-10-02 12:12:29,172 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:12:29,172 INFO L87 Difference]: Start difference. First operand 193 states and 193 transitions. Second operand 97 states. [2018-10-02 12:12:29,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:12:29,855 INFO L93 Difference]: Finished difference Result 197 states and 197 transitions. [2018-10-02 12:12:29,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-10-02 12:12:29,855 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 192 [2018-10-02 12:12:29,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:12:29,856 INFO L225 Difference]: With dead ends: 197 [2018-10-02 12:12:29,856 INFO L226 Difference]: Without dead ends: 195 [2018-10-02 12:12:29,856 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.8s impTime [2018-10-02 12:12:29,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-10-02 12:12:29,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-10-02 12:12:29,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-10-02 12:12:29,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 195 transitions. [2018-10-02 12:12:29,859 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 195 transitions. Word has length 192 [2018-10-02 12:12:29,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:12:29,859 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 195 transitions. [2018-10-02 12:12:29,860 INFO L481 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-10-02 12:12:29,860 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 195 transitions. [2018-10-02 12:12:29,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-10-02 12:12:29,860 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:12:29,860 INFO L375 BasicCegarLoop]: trace histogram [96, 95, 1, 1, 1] [2018-10-02 12:12:29,861 INFO L423 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:12:29,861 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:12:29,861 INFO L82 PathProgramCache]: Analyzing trace with hash -986656435, now seen corresponding path program 95 times [2018-10-02 12:12:29,861 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:12:29,861 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:12:29,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:12:29,862 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:12:29,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:12:29,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:12:31,414 INFO L134 CoverageAnalysis]: Checked inductivity of 9120 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:31,414 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:12:31,414 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:12:31,423 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:12:44,715 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 96 check-sat command(s) [2018-10-02 12:12:44,715 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:12:44,723 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:12:45,277 INFO L134 CoverageAnalysis]: Checked inductivity of 9120 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:45,303 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:12:45,304 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2018-10-02 12:12:45,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-10-02 12:12:45,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-10-02 12:12:45,305 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:12:45,305 INFO L87 Difference]: Start difference. First operand 195 states and 195 transitions. Second operand 98 states. [2018-10-02 12:12:45,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:12:45,939 INFO L93 Difference]: Finished difference Result 199 states and 199 transitions. [2018-10-02 12:12:45,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-10-02 12:12:45,939 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 194 [2018-10-02 12:12:45,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:12:45,940 INFO L225 Difference]: With dead ends: 199 [2018-10-02 12:12:45,940 INFO L226 Difference]: Without dead ends: 197 [2018-10-02 12:12:45,940 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.2s impTime [2018-10-02 12:12:45,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-10-02 12:12:45,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-10-02 12:12:45,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-10-02 12:12:45,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 197 transitions. [2018-10-02 12:12:45,944 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 197 transitions. Word has length 194 [2018-10-02 12:12:45,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:12:45,944 INFO L480 AbstractCegarLoop]: Abstraction has 197 states and 197 transitions. [2018-10-02 12:12:45,944 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-10-02 12:12:45,944 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 197 transitions. [2018-10-02 12:12:45,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-10-02 12:12:45,945 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:12:45,946 INFO L375 BasicCegarLoop]: trace histogram [97, 96, 1, 1, 1] [2018-10-02 12:12:45,946 INFO L423 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:12:45,946 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:12:45,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1010990471, now seen corresponding path program 96 times [2018-10-02 12:12:45,946 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:12:45,946 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:12:45,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:12:45,947 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:12:45,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:12:45,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:12:47,424 INFO L134 CoverageAnalysis]: Checked inductivity of 9312 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:12:47,424 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:12:47,424 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 Received shutdown request... [2018-10-02 12:12:47,433 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:12:50,476 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 97 check-sat command(s) [2018-10-02 12:12:50,476 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:12:50,484 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:12:50,496 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-02 12:12:50,697 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:12:50,697 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-02 12:12:50,703 WARN L205 ceAbstractionStarter]: Timeout [2018-10-02 12:12:50,703 INFO L202 PluginConnector]: Adding new model array2.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 12:12:50 BoogieIcfgContainer [2018-10-02 12:12:50,703 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-02 12:12:50,704 INFO L168 Benchmark]: Toolchain (without parser) took 250300.43 ms. Allocated memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: -13.6 MB). Free memory was 1.5 GB in the beginning and 909.6 MB in the end (delta: 553.4 MB). Peak memory consumption was 539.8 MB. Max. memory is 7.1 GB. [2018-10-02 12:12:50,705 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-02 12:12:50,706 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.61 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-02 12:12:50,706 INFO L168 Benchmark]: Boogie Preprocessor took 21.72 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-02 12:12:50,706 INFO L168 Benchmark]: RCFGBuilder took 291.58 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-02 12:12:50,707 INFO L168 Benchmark]: TraceAbstraction took 249937.75 ms. Allocated memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: -13.6 MB). Free memory was 1.4 GB in the beginning and 909.6 MB in the end (delta: 532.3 MB). Peak memory consumption was 518.6 MB. Max. memory is 7.1 GB. [2018-10-02 12:12:50,710 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 43.61 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 21.72 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 291.58 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 249937.75 ms. Allocated memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: -13.6 MB). Free memory was 1.4 GB in the beginning and 909.6 MB in the end (delta: 532.3 MB). Peak memory consumption was 518.6 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 197 with TraceHistMax 97, 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, 249.8s OverallTime, 97 OverallIterations, 97 TraceHistogramMax, 32.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 384 SDtfs, 0 SDslu, 7451 SDs, 0 SdLazy, 7547 SolverSat, 166 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14157 GetRequests, 9501 SyntacticMatches, 0 SemanticMatches, 4656 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 124.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=197occurred in iteration=96, 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, 96 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.1s SsaConstructionTime, 75.5s SatisfiabilityAnalysisTime, 130.5s InterpolantComputationTime, 19004 NumberOfCodeBlocks, 19004 NumberOfCodeBlocksAsserted, 2511 NumberOfCheckSat, 18813 ConstructedInterpolants, 0 QuantifiedInterpolants, 7263531 SizeOfPredicates, 95 NumberOfNonLiveVariables, 33155 ConjunctsInSsa, 4750 ConjunctsInUnsatCore, 191 InterpolantComputations, 1 PerfectInterpolantSequences, 0/589760 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-0-2018-10-02_12-12-50-720.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-0-2018-10-02_12-12-50-720.csv Completed graceful shutdown