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/array1.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-9f4048f-m [2018-10-04 14:24:54,089 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-04 14:24:54,091 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-04 14:24:54,106 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-04 14:24:54,106 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-04 14:24:54,108 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-04 14:24:54,109 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-04 14:24:54,111 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-04 14:24:54,114 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-04 14:24:54,115 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-04 14:24:54,115 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-04 14:24:54,164 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 [2018-10-04 14:24:54,180 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-04 14:24:54,180 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-04 14:24:54,181 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-04 14:24:54,181 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-04 14:24:54,182 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-04 14:24:54,182 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-04 14:24:54,182 INFO L133 SettingsManager]: * Use SBE=true [2018-10-04 14:24:54,182 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-04 14:24:54,182 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-04 14:24:54,183 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-04 14:24:54,183 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-04 14:24:54,183 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-04 14:24:54,183 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-04 14:24:54,183 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-04 14:24:54,183 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-04 14:24:54,184 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-04 14:24:54,184 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-04 14:24:54,184 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-04 14:24:54,184 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-04 14:24:54,184 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-04 14:24:54,185 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-04 14:24:54,185 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-04 14:24:54,185 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-04 14:24:54,185 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-04 14:24:54,185 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-04 14:24:54,186 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-04 14:24:54,186 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-04 14:24:54,186 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-04 14:24:54,186 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-04 14:24:54,186 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-04 14:24:54,187 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-04 14:24:54,238 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-04 14:24:54,251 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-04 14:24:54,255 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-04 14:24:54,257 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-04 14:24:54,257 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-04 14:24:54,258 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/array1.i_3.bpl [2018-10-04 14:24:54,259 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/array1.i_3.bpl' [2018-10-04 14:24:54,317 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-04 14:24:54,319 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-04 14:24:54,320 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-04 14:24:54,321 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-04 14:24:54,321 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-04 14:24:54,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "array1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:24:54" (1/1) ... [2018-10-04 14:24:54,360 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "array1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:24:54" (1/1) ... [2018-10-04 14:24:54,369 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-04 14:24:54,370 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-04 14:24:54,370 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-04 14:24:54,371 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-04 14:24:54,383 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "array1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:24:54" (1/1) ... [2018-10-04 14:24:54,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "array1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:24:54" (1/1) ... [2018-10-04 14:24:54,385 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "array1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:24:54" (1/1) ... [2018-10-04 14:24:54,385 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "array1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:24:54" (1/1) ... [2018-10-04 14:24:54,389 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "array1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:24:54" (1/1) ... [2018-10-04 14:24:54,391 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "array1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:24:54" (1/1) ... [2018-10-04 14:24:54,392 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "array1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:24:54" (1/1) ... [2018-10-04 14:24:54,393 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-04 14:24:54,394 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-04 14:24:54,394 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-04 14:24:54,395 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-04 14:24:54,396 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "array1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:24:54" (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 [2018-10-04 14:24:54,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-04 14:24:54,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-04 14:24:54,630 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-04 14:24:54,630 INFO L202 PluginConnector]: Adding new model array1.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 02:24:54 BoogieIcfgContainer [2018-10-04 14:24:54,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-04 14:24:54,632 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-04 14:24:54,632 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-04 14:24:54,635 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-04 14:24:54,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "array1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:24:54" (1/2) ... [2018-10-04 14:24:54,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@161b4544 and model type array1.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 02:24:54, skipping insertion in model container [2018-10-04 14:24:54,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "array1.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 02:24:54" (2/2) ... [2018-10-04 14:24:54,639 INFO L112 eAbstractionObserver]: Analyzing ICFG array1.i_3.bpl [2018-10-04 14:24:54,649 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-04 14:24:54,657 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-04 14:24:54,709 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-04 14:24:54,710 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-04 14:24:54,710 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-04 14:24:54,710 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-04 14:24:54,710 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-04 14:24:54,711 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-04 14:24:54,711 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-04 14:24:54,711 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-04 14:24:54,711 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-04 14:24:54,727 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2018-10-04 14:24:54,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-10-04 14:24:54,734 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:54,735 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-10-04 14:24:54,736 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:54,743 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:54,744 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, now seen corresponding path program 1 times [2018-10-04 14:24:54,746 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:54,747 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:54,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:54,797 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:24:54,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:54,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:54,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:54,895 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-04 14:24:54,895 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-04 14:24:54,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-04 14:24:54,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-04 14:24:54,917 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:54,919 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2018-10-04 14:24:54,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:54,973 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-10-04 14:24:54,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-04 14:24:54,977 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-10-04 14:24:54,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:54,995 INFO L225 Difference]: With dead ends: 11 [2018-10-04 14:24:54,995 INFO L226 Difference]: Without dead ends: 7 [2018-10-04 14:24:54,999 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 1 [2018-10-04 14:24:55,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-10-04 14:24:55,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-10-04 14:24:55,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-10-04 14:24:55,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-10-04 14:24:55,038 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-10-04 14:24:55,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:55,039 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-10-04 14:24:55,039 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-04 14:24:55,039 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-10-04 14:24:55,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-04 14:24:55,040 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:55,040 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-10-04 14:24:55,040 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:55,040 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:55,041 INFO L82 PathProgramCache]: Analyzing trace with hash 889591169, now seen corresponding path program 1 times [2018-10-04 14:24:55,041 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:55,041 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:55,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:55,043 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:24:55,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:55,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:55,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:55,189 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:24:55,190 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:24:55,206 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:24:55,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:55,246 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:55,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:55,384 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:24:55,384 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-10-04 14:24:55,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-04 14:24:55,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-04 14:24:55,385 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:55,385 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 4 states. [2018-10-04 14:24:55,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:55,447 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-10-04 14:24:55,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-04 14:24:55,448 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-10-04 14:24:55,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:55,449 INFO L225 Difference]: With dead ends: 11 [2018-10-04 14:24:55,449 INFO L226 Difference]: Without dead ends: 9 [2018-10-04 14:24:55,450 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 2 [2018-10-04 14:24:55,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-10-04 14:24:55,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-10-04 14:24:55,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-04 14:24:55,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-10-04 14:24:55,453 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2018-10-04 14:24:55,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:55,453 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-10-04 14:24:55,453 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-04 14:24:55,454 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-10-04 14:24:55,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-04 14:24:55,454 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:55,454 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2018-10-04 14:24:55,455 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:55,455 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:55,455 INFO L82 PathProgramCache]: Analyzing trace with hash 198673595, now seen corresponding path program 2 times [2018-10-04 14:24:55,455 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:55,455 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:55,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:55,457 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:24:55,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:55,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:55,593 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:55,593 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:24:55,593 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:24:55,603 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:24:55,624 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:24:55,624 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:55,625 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:55,673 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:55,693 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:24:55,694 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-04 14:24:55,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-04 14:24:55,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-04 14:24:55,694 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:55,694 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-10-04 14:24:55,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:55,745 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-10-04 14:24:55,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-04 14:24:55,746 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2018-10-04 14:24:55,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:55,747 INFO L225 Difference]: With dead ends: 13 [2018-10-04 14:24:55,747 INFO L226 Difference]: Without dead ends: 11 [2018-10-04 14:24:55,747 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 3 [2018-10-04 14:24:55,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-04 14:24:55,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-04 14:24:55,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-04 14:24:55,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-10-04 14:24:55,751 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-10-04 14:24:55,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:55,752 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-10-04 14:24:55,752 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-04 14:24:55,752 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-10-04 14:24:55,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-04 14:24:55,753 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:55,753 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1] [2018-10-04 14:24:55,753 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:55,753 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:55,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1946815861, now seen corresponding path program 3 times [2018-10-04 14:24:55,754 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:55,754 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:55,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:55,755 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:55,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:55,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:55,837 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:55,838 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:24:55,838 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:24:55,847 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:24:55,907 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-04 14:24:55,907 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:55,909 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:56,053 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:56,084 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:24:56,084 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-04 14:24:56,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-04 14:24:56,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-04 14:24:56,085 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:56,086 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 6 states. [2018-10-04 14:24:56,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:56,182 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-10-04 14:24:56,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-04 14:24:56,183 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2018-10-04 14:24:56,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:56,184 INFO L225 Difference]: With dead ends: 15 [2018-10-04 14:24:56,184 INFO L226 Difference]: Without dead ends: 13 [2018-10-04 14:24:56,185 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 4 [2018-10-04 14:24:56,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-04 14:24:56,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-04 14:24:56,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-04 14:24:56,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-10-04 14:24:56,189 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-10-04 14:24:56,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:56,189 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-10-04 14:24:56,190 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-04 14:24:56,190 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-10-04 14:24:56,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-04 14:24:56,190 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:56,191 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1] [2018-10-04 14:24:56,191 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:56,191 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:56,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1715646545, now seen corresponding path program 4 times [2018-10-04 14:24:56,192 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:56,192 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:56,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:56,193 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:56,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:56,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:56,345 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:56,345 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:24:56,345 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 [2018-10-04 14:24:56,353 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:24:56,370 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:24:56,370 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:56,372 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:56,460 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:56,481 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:24:56,481 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-04 14:24:56,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-04 14:24:56,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-04 14:24:56,482 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:56,482 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 7 states. [2018-10-04 14:24:56,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:56,514 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-10-04 14:24:56,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-04 14:24:56,515 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2018-10-04 14:24:56,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:56,516 INFO L225 Difference]: With dead ends: 17 [2018-10-04 14:24:56,516 INFO L226 Difference]: Without dead ends: 15 [2018-10-04 14:24:56,516 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 5 [2018-10-04 14:24:56,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-04 14:24:56,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-10-04 14:24:56,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-04 14:24:56,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-10-04 14:24:56,520 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-10-04 14:24:56,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:56,521 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-10-04 14:24:56,521 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-04 14:24:56,521 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-10-04 14:24:56,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-04 14:24:56,522 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:56,522 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1] [2018-10-04 14:24:56,522 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:56,522 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:56,522 INFO L82 PathProgramCache]: Analyzing trace with hash 531164009, now seen corresponding path program 5 times [2018-10-04 14:24:56,523 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:56,523 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:56,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:56,524 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:56,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:56,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:56,724 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:56,724 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:24:56,724 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:24:56,739 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:24:56,754 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-10-04 14:24:56,754 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:56,756 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:56,810 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:56,830 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:24:56,830 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-04 14:24:56,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-04 14:24:56,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-04 14:24:56,831 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:56,831 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 8 states. [2018-10-04 14:24:56,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:56,856 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-10-04 14:24:56,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-04 14:24:56,857 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-10-04 14:24:56,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:56,858 INFO L225 Difference]: With dead ends: 19 [2018-10-04 14:24:56,858 INFO L226 Difference]: Without dead ends: 17 [2018-10-04 14:24:56,858 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 6 [2018-10-04 14:24:56,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-10-04 14:24:56,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-10-04 14:24:56,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-04 14:24:56,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-10-04 14:24:56,863 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2018-10-04 14:24:56,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:56,863 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-10-04 14:24:56,864 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-04 14:24:56,864 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-10-04 14:24:56,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-04 14:24:56,865 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:56,865 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1] [2018-10-04 14:24:56,865 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:56,865 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:56,865 INFO L82 PathProgramCache]: Analyzing trace with hash -652443485, now seen corresponding path program 6 times [2018-10-04 14:24:56,866 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:56,866 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:56,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:56,867 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:56,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:56,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:57,040 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:57,041 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:24:57,041 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:24:57,054 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:24:57,069 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-04 14:24:57,069 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:57,072 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:57,492 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:57,525 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:24:57,526 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-04 14:24:57,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-04 14:24:57,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-04 14:24:57,527 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:57,527 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 9 states. [2018-10-04 14:24:57,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:57,616 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-10-04 14:24:57,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-04 14:24:57,618 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-10-04 14:24:57,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:57,619 INFO L225 Difference]: With dead ends: 21 [2018-10-04 14:24:57,619 INFO L226 Difference]: Without dead ends: 19 [2018-10-04 14:24:57,619 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.0s impTime 7 [2018-10-04 14:24:57,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-04 14:24:57,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-04 14:24:57,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-04 14:24:57,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-10-04 14:24:57,623 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2018-10-04 14:24:57,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:57,623 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-10-04 14:24:57,623 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-04 14:24:57,623 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-10-04 14:24:57,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-04 14:24:57,624 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:57,625 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1] [2018-10-04 14:24:57,625 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:57,625 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:57,625 INFO L82 PathProgramCache]: Analyzing trace with hash 67088221, now seen corresponding path program 7 times [2018-10-04 14:24:57,625 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:57,625 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:57,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:57,626 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:57,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:57,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:57,760 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:57,761 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:24:57,761 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 [2018-10-04 14:24:57,771 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:24:57,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:57,791 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:57,874 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:57,894 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:24:57,895 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-04 14:24:57,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-04 14:24:57,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-04 14:24:57,895 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:57,895 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 10 states. [2018-10-04 14:24:57,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:57,931 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-10-04 14:24:57,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-04 14:24:57,932 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2018-10-04 14:24:57,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:57,933 INFO L225 Difference]: With dead ends: 23 [2018-10-04 14:24:57,933 INFO L226 Difference]: Without dead ends: 21 [2018-10-04 14:24:57,934 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8 [2018-10-04 14:24:57,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-04 14:24:57,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-04 14:24:57,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-04 14:24:57,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-10-04 14:24:57,939 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2018-10-04 14:24:57,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:57,939 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-10-04 14:24:57,939 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-04 14:24:57,939 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-10-04 14:24:57,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-04 14:24:57,940 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:57,940 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1] [2018-10-04 14:24:57,940 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:57,941 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:57,941 INFO L82 PathProgramCache]: Analyzing trace with hash 47323031, now seen corresponding path program 8 times [2018-10-04 14:24:57,941 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:57,941 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:57,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:57,942 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:24:57,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:57,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:58,102 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:58,102 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:24:58,103 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:24:58,119 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:24:58,134 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:24:58,135 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:58,136 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:58,355 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:58,375 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:24:58,376 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-04 14:24:58,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-04 14:24:58,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-04 14:24:58,377 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:58,377 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 11 states. [2018-10-04 14:24:58,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:58,426 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-10-04 14:24:58,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-04 14:24:58,427 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2018-10-04 14:24:58,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:58,428 INFO L225 Difference]: With dead ends: 25 [2018-10-04 14:24:58,428 INFO L226 Difference]: Without dead ends: 23 [2018-10-04 14:24:58,428 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.0s impTime 9 [2018-10-04 14:24:58,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-04 14:24:58,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-04 14:24:58,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-04 14:24:58,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-10-04 14:24:58,434 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 20 [2018-10-04 14:24:58,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:58,434 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-10-04 14:24:58,434 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-04 14:24:58,434 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-10-04 14:24:58,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-04 14:24:58,435 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:58,435 INFO L375 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1] [2018-10-04 14:24:58,435 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:58,436 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:58,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1767155375, now seen corresponding path program 9 times [2018-10-04 14:24:58,436 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:58,436 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:58,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:58,437 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:58,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:58,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:58,628 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:58,629 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:24:58,629 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 [2018-10-04 14:24:58,641 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:24:58,664 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-10-04 14:24:58,664 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:58,666 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:58,756 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:58,776 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:24:58,776 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-10-04 14:24:58,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-04 14:24:58,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-04 14:24:58,777 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:58,777 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 12 states. [2018-10-04 14:24:58,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:58,819 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-10-04 14:24:58,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-04 14:24:58,820 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2018-10-04 14:24:58,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:58,820 INFO L225 Difference]: With dead ends: 27 [2018-10-04 14:24:58,820 INFO L226 Difference]: Without dead ends: 25 [2018-10-04 14:24:58,821 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 10 [2018-10-04 14:24:58,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-04 14:24:58,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-10-04 14:24:58,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-04 14:24:58,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-10-04 14:24:58,824 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2018-10-04 14:24:58,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:58,825 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-10-04 14:24:58,825 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-04 14:24:58,825 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-10-04 14:24:58,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-04 14:24:58,826 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:58,826 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1] [2018-10-04 14:24:58,826 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:58,826 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:58,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1724181365, now seen corresponding path program 10 times [2018-10-04 14:24:58,826 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:58,827 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:58,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:58,827 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:58,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:58,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:59,033 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:59,034 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:24:59,034 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:24:59,051 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:24:59,065 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:24:59,065 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:59,067 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:59,155 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:59,176 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:24:59,176 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-10-04 14:24:59,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-04 14:24:59,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-04 14:24:59,177 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:59,177 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 13 states. [2018-10-04 14:24:59,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:59,211 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-10-04 14:24:59,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-04 14:24:59,211 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 24 [2018-10-04 14:24:59,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:59,212 INFO L225 Difference]: With dead ends: 29 [2018-10-04 14:24:59,212 INFO L226 Difference]: Without dead ends: 27 [2018-10-04 14:24:59,213 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 11 [2018-10-04 14:24:59,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-04 14:24:59,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-10-04 14:24:59,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-10-04 14:24:59,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-10-04 14:24:59,220 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 24 [2018-10-04 14:24:59,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:59,220 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-10-04 14:24:59,220 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-04 14:24:59,220 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-10-04 14:24:59,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-04 14:24:59,221 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:59,221 INFO L375 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1] [2018-10-04 14:24:59,221 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:59,222 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:59,222 INFO L82 PathProgramCache]: Analyzing trace with hash 919136581, now seen corresponding path program 11 times [2018-10-04 14:24:59,222 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:59,222 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:59,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:59,223 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:59,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:59,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:59,350 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:59,351 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:24:59,351 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 [2018-10-04 14:24:59,360 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:24:59,386 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-10-04 14:24:59,387 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:59,389 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:59,455 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:59,485 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:24:59,485 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-10-04 14:24:59,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-04 14:24:59,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-04 14:24:59,486 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:59,486 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 14 states. [2018-10-04 14:24:59,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:59,585 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-10-04 14:24:59,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-04 14:24:59,585 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 26 [2018-10-04 14:24:59,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:59,586 INFO L225 Difference]: With dead ends: 31 [2018-10-04 14:24:59,586 INFO L226 Difference]: Without dead ends: 29 [2018-10-04 14:24:59,587 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 12 [2018-10-04 14:24:59,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-04 14:24:59,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-10-04 14:24:59,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-10-04 14:24:59,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-10-04 14:24:59,591 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 26 [2018-10-04 14:24:59,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:59,592 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-10-04 14:24:59,592 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-04 14:24:59,592 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-10-04 14:24:59,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-04 14:24:59,593 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:59,593 INFO L375 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1] [2018-10-04 14:24:59,593 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:59,593 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:59,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1472956545, now seen corresponding path program 12 times [2018-10-04 14:24:59,594 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:59,594 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:59,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:59,595 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:59,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:59,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:59,807 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:59,808 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:24:59,808 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 [2018-10-04 14:24:59,815 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:24:59,852 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-10-04 14:24:59,852 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:59,854 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:00,057 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:00,078 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:00,078 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-10-04 14:25:00,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-04 14:25:00,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-04 14:25:00,079 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:00,079 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 15 states. [2018-10-04 14:25:00,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:00,126 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-10-04 14:25:00,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-04 14:25:00,129 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 28 [2018-10-04 14:25:00,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:00,130 INFO L225 Difference]: With dead ends: 33 [2018-10-04 14:25:00,130 INFO L226 Difference]: Without dead ends: 31 [2018-10-04 14:25:00,130 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 13 [2018-10-04 14:25:00,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-04 14:25:00,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-04 14:25:00,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-04 14:25:00,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-10-04 14:25:00,135 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 28 [2018-10-04 14:25:00,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:00,135 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-10-04 14:25:00,136 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-04 14:25:00,136 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-10-04 14:25:00,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-04 14:25:00,136 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:00,137 INFO L375 BasicCegarLoop]: trace histogram [14, 13, 1, 1, 1] [2018-10-04 14:25:00,137 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:00,137 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:00,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1828020025, now seen corresponding path program 13 times [2018-10-04 14:25:00,137 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:00,138 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:00,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:00,138 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:00,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:00,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:00,366 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:00,366 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:00,367 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:25:00,377 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:25:00,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:00,395 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:00,528 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:00,548 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:00,548 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-10-04 14:25:00,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-04 14:25:00,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-04 14:25:00,549 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:00,549 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 16 states. [2018-10-04 14:25:00,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:00,646 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-10-04 14:25:00,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-04 14:25:00,647 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 30 [2018-10-04 14:25:00,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:00,648 INFO L225 Difference]: With dead ends: 35 [2018-10-04 14:25:00,648 INFO L226 Difference]: Without dead ends: 33 [2018-10-04 14:25:00,648 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 14 [2018-10-04 14:25:00,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-04 14:25:00,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-10-04 14:25:00,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-04 14:25:00,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-10-04 14:25:00,653 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 30 [2018-10-04 14:25:00,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:00,654 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-10-04 14:25:00,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-04 14:25:00,654 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-10-04 14:25:00,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-04 14:25:00,655 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:00,655 INFO L375 BasicCegarLoop]: trace histogram [15, 14, 1, 1, 1] [2018-10-04 14:25:00,655 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:00,655 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:00,655 INFO L82 PathProgramCache]: Analyzing trace with hash 85672051, now seen corresponding path program 14 times [2018-10-04 14:25:00,656 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:00,656 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:00,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:00,657 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:25:00,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:00,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:00,941 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:00,941 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:00,941 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 [2018-10-04 14:25:00,954 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:25:01,000 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:25:01,000 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:01,003 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:01,440 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:01,461 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:01,461 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-10-04 14:25:01,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-04 14:25:01,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-04 14:25:01,462 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:01,462 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 17 states. [2018-10-04 14:25:01,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:01,535 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-10-04 14:25:01,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-04 14:25:01,536 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 32 [2018-10-04 14:25:01,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:01,536 INFO L225 Difference]: With dead ends: 37 [2018-10-04 14:25:01,536 INFO L226 Difference]: Without dead ends: 35 [2018-10-04 14:25:01,537 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.1s impTime 15 [2018-10-04 14:25:01,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-04 14:25:01,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-10-04 14:25:01,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-04 14:25:01,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-10-04 14:25:01,541 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 32 [2018-10-04 14:25:01,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:01,541 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-10-04 14:25:01,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-04 14:25:01,541 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-10-04 14:25:01,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-04 14:25:01,542 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:01,542 INFO L375 BasicCegarLoop]: trace histogram [16, 15, 1, 1, 1] [2018-10-04 14:25:01,542 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:01,542 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:01,542 INFO L82 PathProgramCache]: Analyzing trace with hash 726514477, now seen corresponding path program 15 times [2018-10-04 14:25:01,543 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:01,543 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:01,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:01,544 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:01,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:01,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:01,864 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:01,864 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:01,864 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:25:01,873 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:25:01,941 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-10-04 14:25:01,942 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:01,943 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:02,244 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:02,265 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:02,265 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-10-04 14:25:02,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-04 14:25:02,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-04 14:25:02,266 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:02,266 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 18 states. [2018-10-04 14:25:02,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:02,308 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-10-04 14:25:02,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-04 14:25:02,309 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 34 [2018-10-04 14:25:02,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:02,310 INFO L225 Difference]: With dead ends: 39 [2018-10-04 14:25:02,310 INFO L226 Difference]: Without dead ends: 37 [2018-10-04 14:25:02,311 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.2s impTime 16 [2018-10-04 14:25:02,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-04 14:25:02,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-10-04 14:25:02,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-04 14:25:02,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-10-04 14:25:02,315 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 34 [2018-10-04 14:25:02,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:02,316 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-10-04 14:25:02,316 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-04 14:25:02,316 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-10-04 14:25:02,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-04 14:25:02,317 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:02,317 INFO L375 BasicCegarLoop]: trace histogram [17, 16, 1, 1, 1] [2018-10-04 14:25:02,317 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:02,317 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:02,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1899204761, now seen corresponding path program 16 times [2018-10-04 14:25:02,318 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:02,318 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:02,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:02,319 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:02,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:02,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:02,620 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:02,620 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:02,620 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:25:02,628 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:25:02,656 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:25:02,656 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:02,659 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:02,890 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:02,910 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:02,911 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-10-04 14:25:02,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-04 14:25:02,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-04 14:25:02,911 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:02,912 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 19 states. [2018-10-04 14:25:02,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:02,954 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-10-04 14:25:02,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-04 14:25:02,955 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 36 [2018-10-04 14:25:02,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:02,956 INFO L225 Difference]: With dead ends: 41 [2018-10-04 14:25:02,956 INFO L226 Difference]: Without dead ends: 39 [2018-10-04 14:25:02,957 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.1s impTime 17 [2018-10-04 14:25:02,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-04 14:25:02,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-10-04 14:25:02,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-04 14:25:02,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-10-04 14:25:02,962 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 36 [2018-10-04 14:25:02,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:02,963 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-10-04 14:25:02,963 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-04 14:25:02,963 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-10-04 14:25:02,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-04 14:25:02,964 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:02,964 INFO L375 BasicCegarLoop]: trace histogram [18, 17, 1, 1, 1] [2018-10-04 14:25:02,964 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:02,965 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:02,965 INFO L82 PathProgramCache]: Analyzing trace with hash 225377569, now seen corresponding path program 17 times [2018-10-04 14:25:02,965 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:02,965 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:02,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:02,966 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:02,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:02,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:03,726 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:03,726 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:03,726 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:25:03,736 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:25:03,780 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-10-04 14:25:03,780 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:03,782 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:04,029 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:04,050 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:04,051 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-10-04 14:25:04,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-04 14:25:04,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-04 14:25:04,051 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:04,051 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 20 states. [2018-10-04 14:25:04,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:04,086 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-10-04 14:25:04,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-04 14:25:04,087 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 38 [2018-10-04 14:25:04,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:04,088 INFO L225 Difference]: With dead ends: 43 [2018-10-04 14:25:04,088 INFO L226 Difference]: Without dead ends: 41 [2018-10-04 14:25:04,088 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.4s impTime 18 [2018-10-04 14:25:04,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-04 14:25:04,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-10-04 14:25:04,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-04 14:25:04,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-10-04 14:25:04,094 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 38 [2018-10-04 14:25:04,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:04,094 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-10-04 14:25:04,094 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-04 14:25:04,094 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-10-04 14:25:04,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-04 14:25:04,095 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:04,095 INFO L375 BasicCegarLoop]: trace histogram [19, 18, 1, 1, 1] [2018-10-04 14:25:04,095 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:04,096 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:04,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1839531099, now seen corresponding path program 18 times [2018-10-04 14:25:04,096 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:04,096 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:04,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:04,097 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:04,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:04,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:04,365 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:04,366 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:04,366 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:25:04,374 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:25:04,416 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-10-04 14:25:04,416 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:04,419 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:04,877 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:04,912 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:04,912 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-10-04 14:25:04,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-04 14:25:04,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-04 14:25:04,913 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:04,913 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 21 states. [2018-10-04 14:25:05,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:05,119 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-10-04 14:25:05,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-04 14:25:05,120 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 40 [2018-10-04 14:25:05,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:05,121 INFO L225 Difference]: With dead ends: 45 [2018-10-04 14:25:05,121 INFO L226 Difference]: Without dead ends: 43 [2018-10-04 14:25:05,121 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.1s impTime 19 [2018-10-04 14:25:05,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-04 14:25:05,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-10-04 14:25:05,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-04 14:25:05,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-10-04 14:25:05,127 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 40 [2018-10-04 14:25:05,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:05,128 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-10-04 14:25:05,128 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-04 14:25:05,128 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-10-04 14:25:05,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-04 14:25:05,129 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:05,129 INFO L375 BasicCegarLoop]: trace histogram [20, 19, 1, 1, 1] [2018-10-04 14:25:05,129 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:05,129 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:05,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1737087723, now seen corresponding path program 19 times [2018-10-04 14:25:05,129 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:05,130 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:05,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:05,130 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:05,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:05,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:05,499 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:05,500 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:05,500 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:25:05,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:25:05,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:05,528 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:05,624 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:05,645 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:05,645 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-10-04 14:25:05,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-04 14:25:05,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-04 14:25:05,645 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:05,646 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 22 states. [2018-10-04 14:25:05,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:05,724 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-10-04 14:25:05,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-04 14:25:05,724 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 42 [2018-10-04 14:25:05,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:05,725 INFO L225 Difference]: With dead ends: 47 [2018-10-04 14:25:05,725 INFO L226 Difference]: Without dead ends: 45 [2018-10-04 14:25:05,725 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 20 [2018-10-04 14:25:05,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-04 14:25:05,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-10-04 14:25:05,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-04 14:25:05,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-10-04 14:25:05,731 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 42 [2018-10-04 14:25:05,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:05,731 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-10-04 14:25:05,731 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-04 14:25:05,731 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-10-04 14:25:05,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-04 14:25:05,732 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:05,732 INFO L375 BasicCegarLoop]: trace histogram [21, 20, 1, 1, 1] [2018-10-04 14:25:05,732 INFO L423 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:05,733 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:05,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1401028431, now seen corresponding path program 20 times [2018-10-04 14:25:05,733 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:05,733 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:05,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:05,734 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:25:05,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:05,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:06,204 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:06,204 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:06,204 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 [2018-10-04 14:25:06,218 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:25:06,234 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:25:06,234 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:06,236 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:06,343 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:06,362 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:06,362 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-10-04 14:25:06,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-04 14:25:06,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-04 14:25:06,363 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:06,363 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 23 states. [2018-10-04 14:25:06,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:06,429 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-10-04 14:25:06,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-04 14:25:06,430 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 44 [2018-10-04 14:25:06,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:06,431 INFO L225 Difference]: With dead ends: 49 [2018-10-04 14:25:06,431 INFO L226 Difference]: Without dead ends: 47 [2018-10-04 14:25:06,431 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 21 [2018-10-04 14:25:06,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-04 14:25:06,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-04 14:25:06,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-04 14:25:06,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-10-04 14:25:06,437 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 44 [2018-10-04 14:25:06,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:06,437 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-10-04 14:25:06,437 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-04 14:25:06,437 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-10-04 14:25:06,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-04 14:25:06,438 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:06,438 INFO L375 BasicCegarLoop]: trace histogram [22, 21, 1, 1, 1] [2018-10-04 14:25:06,438 INFO L423 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:06,438 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:06,438 INFO L82 PathProgramCache]: Analyzing trace with hash 2063610633, now seen corresponding path program 21 times [2018-10-04 14:25:06,438 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:06,438 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:06,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:06,439 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:06,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:06,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:06,699 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:06,699 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:06,699 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 [2018-10-04 14:25:06,706 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:25:06,830 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-10-04 14:25:06,830 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:06,834 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:06,959 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:06,979 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:06,979 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-10-04 14:25:06,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-04 14:25:06,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-04 14:25:06,980 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:06,980 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 24 states. [2018-10-04 14:25:07,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:07,129 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-10-04 14:25:07,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-04 14:25:07,130 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 46 [2018-10-04 14:25:07,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:07,131 INFO L225 Difference]: With dead ends: 51 [2018-10-04 14:25:07,131 INFO L226 Difference]: Without dead ends: 49 [2018-10-04 14:25:07,131 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 22 [2018-10-04 14:25:07,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-04 14:25:07,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-10-04 14:25:07,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-04 14:25:07,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-10-04 14:25:07,134 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 46 [2018-10-04 14:25:07,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:07,135 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-10-04 14:25:07,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-04 14:25:07,135 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-10-04 14:25:07,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-04 14:25:07,135 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:07,136 INFO L375 BasicCegarLoop]: trace histogram [23, 22, 1, 1, 1] [2018-10-04 14:25:07,136 INFO L423 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:07,136 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:07,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1145020349, now seen corresponding path program 22 times [2018-10-04 14:25:07,136 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:07,136 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:07,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:07,137 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:07,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:07,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:07,486 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:07,486 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:07,487 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:25:07,495 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:25:07,515 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:25:07,515 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:07,518 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:07,621 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:07,642 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:07,642 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-10-04 14:25:07,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-04 14:25:07,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-04 14:25:07,643 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:07,643 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 25 states. [2018-10-04 14:25:07,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:07,703 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-10-04 14:25:07,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-04 14:25:07,704 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 48 [2018-10-04 14:25:07,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:07,705 INFO L225 Difference]: With dead ends: 53 [2018-10-04 14:25:07,705 INFO L226 Difference]: Without dead ends: 51 [2018-10-04 14:25:07,705 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 23 [2018-10-04 14:25:07,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-04 14:25:07,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-04 14:25:07,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-04 14:25:07,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-10-04 14:25:07,710 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 48 [2018-10-04 14:25:07,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:07,711 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-10-04 14:25:07,711 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-04 14:25:07,711 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-10-04 14:25:07,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-04 14:25:07,712 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:07,712 INFO L375 BasicCegarLoop]: trace histogram [24, 23, 1, 1, 1] [2018-10-04 14:25:07,712 INFO L423 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:07,712 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:07,713 INFO L82 PathProgramCache]: Analyzing trace with hash -852875523, now seen corresponding path program 23 times [2018-10-04 14:25:07,713 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:07,713 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:07,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:07,714 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:07,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:07,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:08,277 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:08,278 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:08,278 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:25:08,286 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:25:08,370 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-10-04 14:25:08,370 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:08,373 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:08,489 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:08,510 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:08,510 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-10-04 14:25:08,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-04 14:25:08,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-04 14:25:08,511 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:08,511 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 26 states. [2018-10-04 14:25:08,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:08,556 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-10-04 14:25:08,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-04 14:25:08,557 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 50 [2018-10-04 14:25:08,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:08,557 INFO L225 Difference]: With dead ends: 55 [2018-10-04 14:25:08,557 INFO L226 Difference]: Without dead ends: 53 [2018-10-04 14:25:08,558 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.3s impTime 24 [2018-10-04 14:25:08,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-04 14:25:08,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-10-04 14:25:08,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-10-04 14:25:08,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-10-04 14:25:08,562 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 50 [2018-10-04 14:25:08,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:08,563 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-10-04 14:25:08,563 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-04 14:25:08,563 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-10-04 14:25:08,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-04 14:25:08,563 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:08,563 INFO L375 BasicCegarLoop]: trace histogram [25, 24, 1, 1, 1] [2018-10-04 14:25:08,564 INFO L423 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:08,564 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:08,564 INFO L82 PathProgramCache]: Analyzing trace with hash 725428023, now seen corresponding path program 24 times [2018-10-04 14:25:08,564 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:08,564 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:08,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:08,565 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:08,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:08,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:08,844 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:08,844 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:08,845 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:25:08,853 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:25:08,919 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-10-04 14:25:08,920 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:08,922 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:09,037 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:09,058 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:09,058 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-10-04 14:25:09,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-04 14:25:09,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-04 14:25:09,059 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:09,059 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 27 states. [2018-10-04 14:25:09,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:09,105 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-10-04 14:25:09,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-04 14:25:09,106 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 52 [2018-10-04 14:25:09,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:09,106 INFO L225 Difference]: With dead ends: 57 [2018-10-04 14:25:09,106 INFO L226 Difference]: Without dead ends: 55 [2018-10-04 14:25:09,107 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 25 [2018-10-04 14:25:09,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-04 14:25:09,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-10-04 14:25:09,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-04 14:25:09,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-10-04 14:25:09,111 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 52 [2018-10-04 14:25:09,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:09,112 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-10-04 14:25:09,112 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-04 14:25:09,112 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-10-04 14:25:09,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-04 14:25:09,113 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:09,113 INFO L375 BasicCegarLoop]: trace histogram [26, 25, 1, 1, 1] [2018-10-04 14:25:09,113 INFO L423 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:09,113 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:09,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1351680241, now seen corresponding path program 25 times [2018-10-04 14:25:09,114 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:09,114 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:09,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:09,115 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:09,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:09,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:09,536 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:09,537 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:09,537 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 [2018-10-04 14:25:09,546 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:25:09,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:09,567 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:09,699 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:09,719 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:09,719 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-10-04 14:25:09,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-04 14:25:09,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-04 14:25:09,719 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:09,720 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 28 states. [2018-10-04 14:25:09,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:09,766 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-10-04 14:25:09,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-04 14:25:09,767 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 54 [2018-10-04 14:25:09,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:09,767 INFO L225 Difference]: With dead ends: 59 [2018-10-04 14:25:09,768 INFO L226 Difference]: Without dead ends: 57 [2018-10-04 14:25:09,768 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 26 [2018-10-04 14:25:09,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-04 14:25:09,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-10-04 14:25:09,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-04 14:25:09,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-10-04 14:25:09,772 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 54 [2018-10-04 14:25:09,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:09,772 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-10-04 14:25:09,773 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-04 14:25:09,773 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-10-04 14:25:09,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-04 14:25:09,773 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:09,773 INFO L375 BasicCegarLoop]: trace histogram [27, 26, 1, 1, 1] [2018-10-04 14:25:09,774 INFO L423 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:09,774 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:09,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1884640299, now seen corresponding path program 26 times [2018-10-04 14:25:09,774 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:09,774 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:09,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:09,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:25:09,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:09,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:11,149 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:11,149 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:11,149 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:25:11,158 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:25:11,179 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:25:11,180 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:11,181 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:11,314 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:11,334 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:11,335 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-10-04 14:25:11,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-04 14:25:11,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-04 14:25:11,336 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:11,336 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 29 states. [2018-10-04 14:25:11,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:11,381 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-10-04 14:25:11,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-04 14:25:11,382 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 56 [2018-10-04 14:25:11,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:11,382 INFO L225 Difference]: With dead ends: 61 [2018-10-04 14:25:11,383 INFO L226 Difference]: Without dead ends: 59 [2018-10-04 14:25:11,383 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.0s impTime 27 [2018-10-04 14:25:11,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-04 14:25:11,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-10-04 14:25:11,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-04 14:25:11,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-10-04 14:25:11,385 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 56 [2018-10-04 14:25:11,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:11,386 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-10-04 14:25:11,386 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-04 14:25:11,386 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-10-04 14:25:11,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-04 14:25:11,386 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:11,386 INFO L375 BasicCegarLoop]: trace histogram [28, 27, 1, 1, 1] [2018-10-04 14:25:11,387 INFO L423 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:11,387 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:11,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1336819483, now seen corresponding path program 27 times [2018-10-04 14:25:11,387 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:11,387 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:11,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:11,388 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:11,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:11,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:11,757 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:11,757 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:11,757 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 [2018-10-04 14:25:11,771 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:25:11,849 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-10-04 14:25:11,849 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:11,851 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:11,981 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:12,001 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:12,001 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-10-04 14:25:12,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-04 14:25:12,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-04 14:25:12,002 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:12,002 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 30 states. [2018-10-04 14:25:12,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:12,047 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-10-04 14:25:12,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-04 14:25:12,047 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 58 [2018-10-04 14:25:12,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:12,048 INFO L225 Difference]: With dead ends: 63 [2018-10-04 14:25:12,048 INFO L226 Difference]: Without dead ends: 61 [2018-10-04 14:25:12,049 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 28 [2018-10-04 14:25:12,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-10-04 14:25:12,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-10-04 14:25:12,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-10-04 14:25:12,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-10-04 14:25:12,052 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 58 [2018-10-04 14:25:12,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:12,052 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-10-04 14:25:12,053 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-04 14:25:12,053 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-10-04 14:25:12,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-10-04 14:25:12,053 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:12,053 INFO L375 BasicCegarLoop]: trace histogram [29, 28, 1, 1, 1] [2018-10-04 14:25:12,054 INFO L423 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:12,054 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:12,054 INFO L82 PathProgramCache]: Analyzing trace with hash -488249569, now seen corresponding path program 28 times [2018-10-04 14:25:12,054 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:12,054 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:12,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:12,055 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:12,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:12,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:12,691 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:12,691 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:12,691 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 [2018-10-04 14:25:12,698 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:25:12,722 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:25:12,722 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:12,724 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:12,814 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:12,834 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:12,834 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-10-04 14:25:12,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-04 14:25:12,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-04 14:25:12,835 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:12,835 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 31 states. [2018-10-04 14:25:12,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:12,936 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-10-04 14:25:12,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-04 14:25:12,936 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 60 [2018-10-04 14:25:12,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:12,937 INFO L225 Difference]: With dead ends: 65 [2018-10-04 14:25:12,937 INFO L226 Difference]: Without dead ends: 63 [2018-10-04 14:25:12,938 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.4s impTime 29 [2018-10-04 14:25:12,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-10-04 14:25:12,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-10-04 14:25:12,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-10-04 14:25:12,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-10-04 14:25:12,941 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 60 [2018-10-04 14:25:12,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:12,942 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-10-04 14:25:12,942 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-04 14:25:12,942 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-10-04 14:25:12,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-04 14:25:12,942 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:12,942 INFO L375 BasicCegarLoop]: trace histogram [30, 29, 1, 1, 1] [2018-10-04 14:25:12,943 INFO L423 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:12,943 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:12,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1056348455, now seen corresponding path program 29 times [2018-10-04 14:25:12,943 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:12,943 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:12,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:12,944 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:12,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:12,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:13,313 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:13,314 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:13,314 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:25:13,321 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:25:13,489 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-10-04 14:25:13,489 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:13,493 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:13,613 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:13,635 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:13,636 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-10-04 14:25:13,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-04 14:25:13,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-04 14:25:13,637 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:13,637 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 32 states. [2018-10-04 14:25:13,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:13,693 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-10-04 14:25:13,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-04 14:25:13,693 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 62 [2018-10-04 14:25:13,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:13,694 INFO L225 Difference]: With dead ends: 67 [2018-10-04 14:25:13,694 INFO L226 Difference]: Without dead ends: 65 [2018-10-04 14:25:13,695 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 30 [2018-10-04 14:25:13,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-10-04 14:25:13,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-10-04 14:25:13,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-10-04 14:25:13,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-10-04 14:25:13,698 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 62 [2018-10-04 14:25:13,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:13,698 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-10-04 14:25:13,698 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-04 14:25:13,698 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-10-04 14:25:13,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-10-04 14:25:13,698 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:13,699 INFO L375 BasicCegarLoop]: trace histogram [31, 30, 1, 1, 1] [2018-10-04 14:25:13,699 INFO L423 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:13,699 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:13,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1538531309, now seen corresponding path program 30 times [2018-10-04 14:25:13,699 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:13,699 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:13,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:13,700 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:13,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:13,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:14,541 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:14,541 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:14,541 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:25:14,550 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:25:14,636 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-10-04 14:25:14,636 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:14,639 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:14,749 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:14,769 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:14,769 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-10-04 14:25:14,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-04 14:25:14,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-04 14:25:14,769 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:14,770 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 33 states. [2018-10-04 14:25:14,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:14,827 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-10-04 14:25:14,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-04 14:25:14,827 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 64 [2018-10-04 14:25:14,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:14,828 INFO L225 Difference]: With dead ends: 69 [2018-10-04 14:25:14,828 INFO L226 Difference]: Without dead ends: 67 [2018-10-04 14:25:14,828 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.6s impTime 31 [2018-10-04 14:25:14,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-10-04 14:25:14,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-10-04 14:25:14,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-10-04 14:25:14,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-10-04 14:25:14,831 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 64 [2018-10-04 14:25:14,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:14,831 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-10-04 14:25:14,832 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-04 14:25:14,832 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-10-04 14:25:14,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-04 14:25:14,832 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:14,832 INFO L375 BasicCegarLoop]: trace histogram [32, 31, 1, 1, 1] [2018-10-04 14:25:14,833 INFO L423 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:14,833 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:14,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1059786035, now seen corresponding path program 31 times [2018-10-04 14:25:14,833 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:14,833 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:14,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:14,834 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:14,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:14,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:15,254 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:15,255 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:15,255 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:25:15,263 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:25:15,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:15,287 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:15,512 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:15,532 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:15,532 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-10-04 14:25:15,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-04 14:25:15,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-04 14:25:15,532 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:15,533 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 34 states. [2018-10-04 14:25:15,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:15,577 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-10-04 14:25:15,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-04 14:25:15,577 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 66 [2018-10-04 14:25:15,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:15,578 INFO L225 Difference]: With dead ends: 71 [2018-10-04 14:25:15,578 INFO L226 Difference]: Without dead ends: 69 [2018-10-04 14:25:15,579 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.2s impTime 32 [2018-10-04 14:25:15,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-10-04 14:25:15,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-10-04 14:25:15,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-10-04 14:25:15,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-10-04 14:25:15,582 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 66 [2018-10-04 14:25:15,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:15,582 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-10-04 14:25:15,582 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-04 14:25:15,582 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-10-04 14:25:15,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-04 14:25:15,583 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:15,583 INFO L375 BasicCegarLoop]: trace histogram [33, 32, 1, 1, 1] [2018-10-04 14:25:15,583 INFO L423 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:15,583 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:15,583 INFO L82 PathProgramCache]: Analyzing trace with hash -547078393, now seen corresponding path program 32 times [2018-10-04 14:25:15,583 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:15,583 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:15,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:15,584 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:25:15,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:15,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:16,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:16,545 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:16,545 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 [2018-10-04 14:25:16,552 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:25:16,577 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:25:16,578 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:16,579 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:16,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:16,742 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:16,742 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-10-04 14:25:16,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-04 14:25:16,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-04 14:25:16,743 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:16,743 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 35 states. [2018-10-04 14:25:16,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:16,814 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-10-04 14:25:16,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-04 14:25:16,814 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 68 [2018-10-04 14:25:16,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:16,815 INFO L225 Difference]: With dead ends: 73 [2018-10-04 14:25:16,815 INFO L226 Difference]: Without dead ends: 71 [2018-10-04 14:25:16,815 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.7s impTime 33 [2018-10-04 14:25:16,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-04 14:25:16,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-10-04 14:25:16,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-10-04 14:25:16,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-10-04 14:25:16,818 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 68 [2018-10-04 14:25:16,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:16,818 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-10-04 14:25:16,818 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-04 14:25:16,818 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-10-04 14:25:16,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-04 14:25:16,819 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:16,819 INFO L375 BasicCegarLoop]: trace histogram [34, 33, 1, 1, 1] [2018-10-04 14:25:16,819 INFO L423 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:16,819 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:16,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1756273471, now seen corresponding path program 33 times [2018-10-04 14:25:16,820 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:16,820 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:16,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:16,821 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:16,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:16,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:17,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:17,298 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:17,298 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:25:17,305 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:25:17,419 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2018-10-04 14:25:17,419 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:17,422 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:17,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:17,582 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:17,583 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-10-04 14:25:17,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-04 14:25:17,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-04 14:25:17,583 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:17,583 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 36 states. [2018-10-04 14:25:17,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:17,632 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-10-04 14:25:17,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-04 14:25:17,633 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 70 [2018-10-04 14:25:17,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:17,634 INFO L225 Difference]: With dead ends: 75 [2018-10-04 14:25:17,634 INFO L226 Difference]: Without dead ends: 73 [2018-10-04 14:25:17,634 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 34 [2018-10-04 14:25:17,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-10-04 14:25:17,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-10-04 14:25:17,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-10-04 14:25:17,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-10-04 14:25:17,638 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 70 [2018-10-04 14:25:17,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:17,639 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-10-04 14:25:17,639 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-04 14:25:17,639 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-10-04 14:25:17,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-10-04 14:25:17,639 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:17,639 INFO L375 BasicCegarLoop]: trace histogram [35, 34, 1, 1, 1] [2018-10-04 14:25:17,640 INFO L423 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:17,640 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:17,640 INFO L82 PathProgramCache]: Analyzing trace with hash 143393787, now seen corresponding path program 34 times [2018-10-04 14:25:17,640 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:17,640 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:17,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:17,641 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:17,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:17,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:18,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:18,333 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:18,333 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:25:18,341 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:25:18,369 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:25:18,369 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:18,370 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:18,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:18,513 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:18,514 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-10-04 14:25:18,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-04 14:25:18,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-04 14:25:18,514 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:18,514 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 37 states. [2018-10-04 14:25:18,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:18,667 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-10-04 14:25:18,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-04 14:25:18,667 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 72 [2018-10-04 14:25:18,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:18,669 INFO L225 Difference]: With dead ends: 77 [2018-10-04 14:25:18,669 INFO L226 Difference]: Without dead ends: 75 [2018-10-04 14:25:18,669 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.4s impTime 35 [2018-10-04 14:25:18,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-10-04 14:25:18,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-10-04 14:25:18,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-04 14:25:18,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-10-04 14:25:18,674 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 72 [2018-10-04 14:25:18,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:18,674 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-10-04 14:25:18,674 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-04 14:25:18,674 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-10-04 14:25:18,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-04 14:25:18,675 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:18,675 INFO L375 BasicCegarLoop]: trace histogram [36, 35, 1, 1, 1] [2018-10-04 14:25:18,675 INFO L423 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:18,676 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:18,676 INFO L82 PathProgramCache]: Analyzing trace with hash 362527925, now seen corresponding path program 35 times [2018-10-04 14:25:18,676 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:18,676 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:18,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:18,677 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:18,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:18,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:19,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:19,301 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:19,301 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 [2018-10-04 14:25:19,308 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:25:19,622 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-10-04 14:25:19,622 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:19,625 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:19,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:19,770 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:19,770 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-10-04 14:25:19,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-04 14:25:19,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-04 14:25:19,770 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:19,771 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 38 states. [2018-10-04 14:25:19,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:19,889 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-10-04 14:25:19,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-04 14:25:19,890 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 74 [2018-10-04 14:25:19,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:19,891 INFO L225 Difference]: With dead ends: 79 [2018-10-04 14:25:19,891 INFO L226 Difference]: Without dead ends: 77 [2018-10-04 14:25:19,891 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.4s impTime 36 [2018-10-04 14:25:19,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-10-04 14:25:19,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-10-04 14:25:19,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-10-04 14:25:19,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-10-04 14:25:19,894 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 74 [2018-10-04 14:25:19,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:19,894 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-10-04 14:25:19,894 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-04 14:25:19,894 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-10-04 14:25:19,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-10-04 14:25:19,895 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:19,895 INFO L375 BasicCegarLoop]: trace histogram [37, 36, 1, 1, 1] [2018-10-04 14:25:19,895 INFO L423 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:19,895 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:19,895 INFO L82 PathProgramCache]: Analyzing trace with hash 497037039, now seen corresponding path program 36 times [2018-10-04 14:25:19,895 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:19,895 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:19,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:19,896 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:19,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:19,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:20,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:20,577 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:20,577 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:25:20,584 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:25:20,712 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-10-04 14:25:20,712 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:20,715 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:21,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:21,617 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:21,617 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-10-04 14:25:21,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-04 14:25:21,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-04 14:25:21,618 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:21,618 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 39 states. [2018-10-04 14:25:21,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:21,685 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-10-04 14:25:21,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-04 14:25:21,685 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 76 [2018-10-04 14:25:21,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:21,686 INFO L225 Difference]: With dead ends: 81 [2018-10-04 14:25:21,686 INFO L226 Difference]: Without dead ends: 79 [2018-10-04 14:25:21,687 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 0.5s impTime 37 [2018-10-04 14:25:21,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-10-04 14:25:21,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-10-04 14:25:21,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-10-04 14:25:21,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-10-04 14:25:21,689 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 76 [2018-10-04 14:25:21,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:21,690 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-10-04 14:25:21,690 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-04 14:25:21,690 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-10-04 14:25:21,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-04 14:25:21,690 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:21,691 INFO L375 BasicCegarLoop]: trace histogram [38, 37, 1, 1, 1] [2018-10-04 14:25:21,691 INFO L423 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:21,691 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:21,691 INFO L82 PathProgramCache]: Analyzing trace with hash 911276713, now seen corresponding path program 37 times [2018-10-04 14:25:21,691 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:21,691 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:21,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:21,692 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:21,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:21,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:22,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:22,382 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:22,382 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 [2018-10-04 14:25:22,389 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:25:22,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:22,419 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:22,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:22,574 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:22,575 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-10-04 14:25:22,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-04 14:25:22,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-04 14:25:22,575 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:22,575 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 40 states. [2018-10-04 14:25:22,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:22,660 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-10-04 14:25:22,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-04 14:25:22,660 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 78 [2018-10-04 14:25:22,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:22,661 INFO L225 Difference]: With dead ends: 83 [2018-10-04 14:25:22,661 INFO L226 Difference]: Without dead ends: 81 [2018-10-04 14:25:22,661 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.5s impTime 38 [2018-10-04 14:25:22,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-10-04 14:25:22,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-10-04 14:25:22,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-10-04 14:25:22,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-10-04 14:25:22,664 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 78 [2018-10-04 14:25:22,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:22,664 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-10-04 14:25:22,664 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-04 14:25:22,664 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-10-04 14:25:22,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-10-04 14:25:22,665 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:22,665 INFO L375 BasicCegarLoop]: trace histogram [39, 38, 1, 1, 1] [2018-10-04 14:25:22,665 INFO L423 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:22,665 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:22,665 INFO L82 PathProgramCache]: Analyzing trace with hash -436355101, now seen corresponding path program 38 times [2018-10-04 14:25:22,665 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:22,665 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:22,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:22,666 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:25:22,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:22,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:23,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:23,437 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:23,437 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:25:23,444 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:25:23,475 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:25:23,476 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:23,477 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:23,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:23,679 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:23,679 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-10-04 14:25:23,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-04 14:25:23,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-04 14:25:23,680 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:23,680 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 41 states. [2018-10-04 14:25:23,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:23,807 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-10-04 14:25:23,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-04 14:25:23,807 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 80 [2018-10-04 14:25:23,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:23,808 INFO L225 Difference]: With dead ends: 85 [2018-10-04 14:25:23,808 INFO L226 Difference]: Without dead ends: 83 [2018-10-04 14:25:23,809 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.6s impTime 39 [2018-10-04 14:25:23,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-10-04 14:25:23,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-10-04 14:25:23,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-10-04 14:25:23,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-10-04 14:25:23,815 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 80 [2018-10-04 14:25:23,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:23,815 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-10-04 14:25:23,815 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-04 14:25:23,815 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-10-04 14:25:23,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-04 14:25:23,816 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:23,816 INFO L375 BasicCegarLoop]: trace histogram [40, 39, 1, 1, 1] [2018-10-04 14:25:23,816 INFO L423 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:23,816 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:23,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1569595037, now seen corresponding path program 39 times [2018-10-04 14:25:23,817 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:23,817 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:23,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:23,817 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:23,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:23,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:24,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:24,412 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:24,412 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:25:24,420 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:25:24,590 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2018-10-04 14:25:24,590 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:24,593 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:24,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:24,759 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:24,759 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-10-04 14:25:24,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-04 14:25:24,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-04 14:25:24,760 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:24,760 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 42 states. [2018-10-04 14:25:24,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:24,876 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-10-04 14:25:24,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-04 14:25:24,876 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 82 [2018-10-04 14:25:24,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:24,877 INFO L225 Difference]: With dead ends: 87 [2018-10-04 14:25:24,877 INFO L226 Difference]: Without dead ends: 85 [2018-10-04 14:25:24,877 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.4s impTime 40 [2018-10-04 14:25:24,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-10-04 14:25:24,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-10-04 14:25:24,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-10-04 14:25:24,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2018-10-04 14:25:24,880 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 82 [2018-10-04 14:25:24,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:24,880 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2018-10-04 14:25:24,880 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-04 14:25:24,881 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2018-10-04 14:25:24,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-10-04 14:25:24,881 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:24,881 INFO L375 BasicCegarLoop]: trace histogram [41, 40, 1, 1, 1] [2018-10-04 14:25:24,881 INFO L423 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:24,882 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:24,882 INFO L82 PathProgramCache]: Analyzing trace with hash 847361751, now seen corresponding path program 40 times [2018-10-04 14:25:24,882 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:24,882 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:24,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:24,883 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:24,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:24,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:26,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:26,488 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:26,488 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:25:26,496 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:25:26,552 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:25:26,552 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:26,555 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:27,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:27,386 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:27,386 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-10-04 14:25:27,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-04 14:25:27,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-04 14:25:27,386 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:27,387 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 43 states. [2018-10-04 14:25:27,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:27,539 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-10-04 14:25:27,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-04 14:25:27,540 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 84 [2018-10-04 14:25:27,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:27,541 INFO L225 Difference]: With dead ends: 89 [2018-10-04 14:25:27,541 INFO L226 Difference]: Without dead ends: 87 [2018-10-04 14:25:27,541 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.3s impTime 41 [2018-10-04 14:25:27,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-10-04 14:25:27,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-10-04 14:25:27,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-10-04 14:25:27,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-10-04 14:25:27,544 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 84 [2018-10-04 14:25:27,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:27,545 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-10-04 14:25:27,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-04 14:25:27,545 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-10-04 14:25:27,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-04 14:25:27,546 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:27,546 INFO L375 BasicCegarLoop]: trace histogram [42, 41, 1, 1, 1] [2018-10-04 14:25:27,546 INFO L423 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:27,546 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:27,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1729091439, now seen corresponding path program 41 times [2018-10-04 14:25:27,547 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:27,547 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:27,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:27,547 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:27,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:27,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:28,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:28,392 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:28,392 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 [2018-10-04 14:25:28,401 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:25:28,910 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2018-10-04 14:25:28,910 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:28,914 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:29,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:29,162 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:29,162 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-10-04 14:25:29,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-04 14:25:29,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-04 14:25:29,163 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:29,163 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 44 states. [2018-10-04 14:25:29,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:29,246 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-10-04 14:25:29,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-04 14:25:29,246 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 86 [2018-10-04 14:25:29,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:29,247 INFO L225 Difference]: With dead ends: 91 [2018-10-04 14:25:29,247 INFO L226 Difference]: Without dead ends: 89 [2018-10-04 14:25:29,248 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.6s impTime 42 [2018-10-04 14:25:29,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-10-04 14:25:29,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-10-04 14:25:29,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-10-04 14:25:29,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-10-04 14:25:29,251 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 86 [2018-10-04 14:25:29,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:29,251 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-10-04 14:25:29,252 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-04 14:25:29,252 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-10-04 14:25:29,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-04 14:25:29,252 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:29,252 INFO L375 BasicCegarLoop]: trace histogram [43, 42, 1, 1, 1] [2018-10-04 14:25:29,253 INFO L423 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:29,253 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:29,253 INFO L82 PathProgramCache]: Analyzing trace with hash 495522763, now seen corresponding path program 42 times [2018-10-04 14:25:29,253 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:29,253 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:29,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:29,254 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:29,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:29,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:30,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:30,011 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:30,011 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:25:30,018 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:25:30,198 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-10-04 14:25:30,198 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:30,201 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:30,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:30,406 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:30,406 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-10-04 14:25:30,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-04 14:25:30,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-04 14:25:30,407 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:30,407 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 45 states. [2018-10-04 14:25:30,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:30,465 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-10-04 14:25:30,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-04 14:25:30,465 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 88 [2018-10-04 14:25:30,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:30,466 INFO L225 Difference]: With dead ends: 93 [2018-10-04 14:25:30,466 INFO L226 Difference]: Without dead ends: 91 [2018-10-04 14:25:30,467 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.5s impTime 43 [2018-10-04 14:25:30,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-04 14:25:30,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-10-04 14:25:30,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-10-04 14:25:30,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-10-04 14:25:30,470 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 88 [2018-10-04 14:25:30,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:30,471 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-10-04 14:25:30,471 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-04 14:25:30,471 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-10-04 14:25:30,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-04 14:25:30,471 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:30,471 INFO L375 BasicCegarLoop]: trace histogram [44, 43, 1, 1, 1] [2018-10-04 14:25:30,471 INFO L423 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:30,471 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:30,472 INFO L82 PathProgramCache]: Analyzing trace with hash -543942523, now seen corresponding path program 43 times [2018-10-04 14:25:30,472 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:30,472 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:30,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:30,472 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:30,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:30,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:31,399 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:31,400 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:31,400 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 [2018-10-04 14:25:31,408 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:25:31,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:31,444 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:31,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:31,665 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:31,665 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-10-04 14:25:31,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-04 14:25:31,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-04 14:25:31,666 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:31,666 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 46 states. [2018-10-04 14:25:31,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:31,748 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-10-04 14:25:31,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-04 14:25:31,748 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 90 [2018-10-04 14:25:31,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:31,749 INFO L225 Difference]: With dead ends: 95 [2018-10-04 14:25:31,749 INFO L226 Difference]: Without dead ends: 93 [2018-10-04 14:25:31,749 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.7s impTime 44 [2018-10-04 14:25:31,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-10-04 14:25:31,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-10-04 14:25:31,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-10-04 14:25:31,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-10-04 14:25:31,752 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 90 [2018-10-04 14:25:31,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:31,752 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-10-04 14:25:31,752 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-04 14:25:31,752 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-10-04 14:25:31,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-04 14:25:31,752 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:31,752 INFO L375 BasicCegarLoop]: trace histogram [45, 44, 1, 1, 1] [2018-10-04 14:25:31,753 INFO L423 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:31,753 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:31,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1257297599, now seen corresponding path program 44 times [2018-10-04 14:25:31,753 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:31,753 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:31,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:31,754 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:25:31,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:31,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:33,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:33,294 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:33,294 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 [2018-10-04 14:25:33,316 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:25:33,348 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:25:33,349 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:33,351 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:33,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:33,673 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:33,674 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-10-04 14:25:33,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-04 14:25:33,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-04 14:25:33,674 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:33,674 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 47 states. [2018-10-04 14:25:33,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:33,941 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-10-04 14:25:33,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-04 14:25:33,942 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 92 [2018-10-04 14:25:33,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:33,943 INFO L225 Difference]: With dead ends: 97 [2018-10-04 14:25:33,943 INFO L226 Difference]: Without dead ends: 95 [2018-10-04 14:25:33,943 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.1s impTime 45 [2018-10-04 14:25:33,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-10-04 14:25:33,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-10-04 14:25:33,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-10-04 14:25:33,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-10-04 14:25:33,947 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 92 [2018-10-04 14:25:33,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:33,947 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-10-04 14:25:33,947 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-04 14:25:33,947 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-10-04 14:25:33,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-10-04 14:25:33,948 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:33,948 INFO L375 BasicCegarLoop]: trace histogram [46, 45, 1, 1, 1] [2018-10-04 14:25:33,948 INFO L423 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:33,948 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:33,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1377234553, now seen corresponding path program 45 times [2018-10-04 14:25:33,949 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:33,949 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:33,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:33,949 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:33,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:33,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:34,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:34,555 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:34,555 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 [2018-10-04 14:25:34,563 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:25:34,810 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2018-10-04 14:25:34,810 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:34,813 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:34,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:35,020 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:35,020 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-10-04 14:25:35,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-04 14:25:35,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-04 14:25:35,021 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:35,021 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 48 states. [2018-10-04 14:25:35,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:35,091 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-10-04 14:25:35,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-04 14:25:35,092 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 94 [2018-10-04 14:25:35,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:35,093 INFO L225 Difference]: With dead ends: 99 [2018-10-04 14:25:35,093 INFO L226 Difference]: Without dead ends: 97 [2018-10-04 14:25:35,093 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.4s impTime 46 [2018-10-04 14:25:35,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-10-04 14:25:35,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-10-04 14:25:35,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-10-04 14:25:35,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-10-04 14:25:35,095 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 94 [2018-10-04 14:25:35,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:35,095 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-10-04 14:25:35,095 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-04 14:25:35,095 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-10-04 14:25:35,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-04 14:25:35,096 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:35,096 INFO L375 BasicCegarLoop]: trace histogram [47, 46, 1, 1, 1] [2018-10-04 14:25:35,096 INFO L423 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:35,096 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:35,096 INFO L82 PathProgramCache]: Analyzing trace with hash 672530355, now seen corresponding path program 46 times [2018-10-04 14:25:35,096 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:35,097 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:35,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:35,097 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:35,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:35,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:36,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:36,522 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:36,522 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 [2018-10-04 14:25:36,529 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:25:36,569 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:25:36,569 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:36,571 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:36,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:36,831 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:36,831 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-10-04 14:25:36,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-04 14:25:36,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-04 14:25:36,832 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:36,832 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 49 states. [2018-10-04 14:25:36,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:36,922 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-10-04 14:25:36,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-04 14:25:36,922 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 96 [2018-10-04 14:25:36,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:36,923 INFO L225 Difference]: With dead ends: 101 [2018-10-04 14:25:36,924 INFO L226 Difference]: Without dead ends: 99 [2018-10-04 14:25:36,924 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.2s impTime 47 [2018-10-04 14:25:36,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-10-04 14:25:36,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-10-04 14:25:36,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-10-04 14:25:36,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-10-04 14:25:36,926 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 96 [2018-10-04 14:25:36,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:36,927 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-10-04 14:25:36,927 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-04 14:25:36,927 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-10-04 14:25:36,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-04 14:25:36,928 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:36,928 INFO L375 BasicCegarLoop]: trace histogram [48, 47, 1, 1, 1] [2018-10-04 14:25:36,928 INFO L423 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:36,928 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:36,928 INFO L82 PathProgramCache]: Analyzing trace with hash 2056628845, now seen corresponding path program 47 times [2018-10-04 14:25:36,928 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:36,929 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:36,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:36,929 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:36,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:36,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:37,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:37,626 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:37,626 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 [2018-10-04 14:25:37,633 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:25:38,452 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2018-10-04 14:25:38,453 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:38,456 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:38,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:38,639 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:38,640 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-10-04 14:25:38,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-04 14:25:38,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-04 14:25:38,640 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:38,641 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 50 states. [2018-10-04 14:25:38,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:38,715 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-10-04 14:25:38,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-04 14:25:38,716 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 98 [2018-10-04 14:25:38,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:38,717 INFO L225 Difference]: With dead ends: 103 [2018-10-04 14:25:38,717 INFO L226 Difference]: Without dead ends: 101 [2018-10-04 14:25:38,717 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.5s impTime 48 [2018-10-04 14:25:38,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-10-04 14:25:38,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-10-04 14:25:38,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-10-04 14:25:38,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2018-10-04 14:25:38,720 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 98 [2018-10-04 14:25:38,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:38,720 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2018-10-04 14:25:38,720 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-04 14:25:38,720 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2018-10-04 14:25:38,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-04 14:25:38,721 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:38,721 INFO L375 BasicCegarLoop]: trace histogram [49, 48, 1, 1, 1] [2018-10-04 14:25:38,721 INFO L423 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:38,721 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:38,722 INFO L82 PathProgramCache]: Analyzing trace with hash 735415975, now seen corresponding path program 48 times [2018-10-04 14:25:38,722 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:38,722 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:38,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:38,722 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:38,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:38,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:39,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:39,496 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:39,496 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 [2018-10-04 14:25:39,506 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:25:39,792 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-10-04 14:25:39,792 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:39,795 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:39,965 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:39,987 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:39,987 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-10-04 14:25:39,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-04 14:25:39,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-04 14:25:39,988 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:39,988 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 51 states. [2018-10-04 14:25:40,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:40,086 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-10-04 14:25:40,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-04 14:25:40,087 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 100 [2018-10-04 14:25:40,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:40,088 INFO L225 Difference]: With dead ends: 105 [2018-10-04 14:25:40,088 INFO L226 Difference]: Without dead ends: 103 [2018-10-04 14:25:40,088 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.6s impTime 49 [2018-10-04 14:25:40,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-10-04 14:25:40,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-10-04 14:25:40,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-10-04 14:25:40,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-10-04 14:25:40,093 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 100 [2018-10-04 14:25:40,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:40,094 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-10-04 14:25:40,094 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-04 14:25:40,094 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-10-04 14:25:40,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-04 14:25:40,094 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:40,095 INFO L375 BasicCegarLoop]: trace histogram [50, 49, 1, 1, 1] [2018-10-04 14:25:40,095 INFO L423 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:40,095 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:40,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1934799775, now seen corresponding path program 49 times [2018-10-04 14:25:40,095 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:40,095 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:40,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:40,096 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:40,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:40,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:41,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:41,238 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:41,239 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:25:41,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:25:41,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:41,283 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:41,477 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:41,498 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:41,498 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-10-04 14:25:41,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-04 14:25:41,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-04 14:25:41,499 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:41,499 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 52 states. [2018-10-04 14:25:41,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:41,666 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-10-04 14:25:41,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-04 14:25:41,666 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 102 [2018-10-04 14:25:41,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:41,667 INFO L225 Difference]: With dead ends: 107 [2018-10-04 14:25:41,667 INFO L226 Difference]: Without dead ends: 105 [2018-10-04 14:25:41,667 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.8s impTime 50 [2018-10-04 14:25:41,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-10-04 14:25:41,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-10-04 14:25:41,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-10-04 14:25:41,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-10-04 14:25:41,671 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 102 [2018-10-04 14:25:41,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:41,671 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-10-04 14:25:41,671 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-04 14:25:41,671 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-10-04 14:25:41,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-04 14:25:41,672 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:41,672 INFO L375 BasicCegarLoop]: trace histogram [51, 50, 1, 1, 1] [2018-10-04 14:25:41,672 INFO L423 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:41,673 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:41,673 INFO L82 PathProgramCache]: Analyzing trace with hash 378307483, now seen corresponding path program 50 times [2018-10-04 14:25:41,673 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:41,673 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:41,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:41,674 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:25:41,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:41,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:43,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:43,341 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:43,341 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 [2018-10-04 14:25:43,349 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:25:43,404 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:25:43,404 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:43,407 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:43,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:43,722 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:43,722 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-10-04 14:25:43,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-04 14:25:43,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-04 14:25:43,723 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:43,723 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 53 states. [2018-10-04 14:25:43,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:43,932 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-10-04 14:25:43,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-04 14:25:43,932 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 104 [2018-10-04 14:25:43,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:43,933 INFO L225 Difference]: With dead ends: 109 [2018-10-04 14:25:43,933 INFO L226 Difference]: Without dead ends: 107 [2018-10-04 14:25:43,933 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 51 [2018-10-04 14:25:43,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-10-04 14:25:43,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-10-04 14:25:43,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-10-04 14:25:43,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-10-04 14:25:43,937 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 104 [2018-10-04 14:25:43,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:43,937 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-10-04 14:25:43,937 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-04 14:25:43,937 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-10-04 14:25:43,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-04 14:25:43,938 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:43,938 INFO L375 BasicCegarLoop]: trace histogram [52, 51, 1, 1, 1] [2018-10-04 14:25:43,938 INFO L423 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:43,938 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:43,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1518676907, now seen corresponding path program 51 times [2018-10-04 14:25:43,939 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:43,939 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:43,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:43,940 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:43,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:43,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:45,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2652 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:45,055 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:45,055 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 [2018-10-04 14:25:45,062 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:25:45,427 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2018-10-04 14:25:45,428 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:45,431 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:45,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2652 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:45,851 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:45,852 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-10-04 14:25:45,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-04 14:25:45,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-04 14:25:45,853 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:45,853 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 54 states. [2018-10-04 14:25:45,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:45,959 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-10-04 14:25:45,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-04 14:25:45,959 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 106 [2018-10-04 14:25:45,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:45,960 INFO L225 Difference]: With dead ends: 111 [2018-10-04 14:25:45,960 INFO L226 Difference]: Without dead ends: 109 [2018-10-04 14:25:45,961 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 0.9s impTime 52 [2018-10-04 14:25:45,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-10-04 14:25:45,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-10-04 14:25:45,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-10-04 14:25:45,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-10-04 14:25:45,964 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 106 [2018-10-04 14:25:45,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:45,965 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-10-04 14:25:45,965 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-04 14:25:45,965 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-10-04 14:25:45,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-04 14:25:45,965 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:45,965 INFO L375 BasicCegarLoop]: trace histogram [53, 52, 1, 1, 1] [2018-10-04 14:25:45,966 INFO L423 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:45,966 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:45,966 INFO L82 PathProgramCache]: Analyzing trace with hash 840425103, now seen corresponding path program 52 times [2018-10-04 14:25:45,966 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:45,966 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:45,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:45,967 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:45,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:45,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:47,707 INFO L134 CoverageAnalysis]: Checked inductivity of 2756 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:47,707 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:47,707 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:25:47,722 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:25:47,778 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:25:47,778 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:47,781 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:47,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2756 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:47,977 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:47,977 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-10-04 14:25:47,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-04 14:25:47,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-04 14:25:47,978 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:47,978 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 55 states. [2018-10-04 14:25:48,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:48,081 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-10-04 14:25:48,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-04 14:25:48,082 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 108 [2018-10-04 14:25:48,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:48,082 INFO L225 Difference]: With dead ends: 113 [2018-10-04 14:25:48,083 INFO L226 Difference]: Without dead ends: 111 [2018-10-04 14:25:48,083 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 53 [2018-10-04 14:25:48,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-10-04 14:25:48,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-10-04 14:25:48,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-10-04 14:25:48,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-10-04 14:25:48,086 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 108 [2018-10-04 14:25:48,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:48,086 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-10-04 14:25:48,086 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-04 14:25:48,086 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-10-04 14:25:48,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-04 14:25:48,086 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:48,087 INFO L375 BasicCegarLoop]: trace histogram [54, 53, 1, 1, 1] [2018-10-04 14:25:48,087 INFO L423 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:48,087 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:48,087 INFO L82 PathProgramCache]: Analyzing trace with hash 194724425, now seen corresponding path program 53 times [2018-10-04 14:25:48,087 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:48,087 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:48,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:48,088 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:48,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:48,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:50,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:50,116 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:50,116 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:25:50,132 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:25:51,459 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2018-10-04 14:25:51,459 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:51,463 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:51,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:51,719 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:51,719 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-10-04 14:25:51,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-04 14:25:51,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-04 14:25:51,720 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:51,720 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 56 states. [2018-10-04 14:25:51,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:51,831 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-10-04 14:25:51,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-04 14:25:51,831 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 110 [2018-10-04 14:25:51,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:51,832 INFO L225 Difference]: With dead ends: 115 [2018-10-04 14:25:51,832 INFO L226 Difference]: Without dead ends: 113 [2018-10-04 14:25:51,832 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.6s impTime 54 [2018-10-04 14:25:51,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-10-04 14:25:51,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-10-04 14:25:51,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-10-04 14:25:51,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2018-10-04 14:25:51,835 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 110 [2018-10-04 14:25:51,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:51,835 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2018-10-04 14:25:51,835 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-04 14:25:51,836 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2018-10-04 14:25:51,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-04 14:25:51,836 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:51,836 INFO L375 BasicCegarLoop]: trace histogram [55, 54, 1, 1, 1] [2018-10-04 14:25:51,836 INFO L423 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:51,837 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:51,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1848336509, now seen corresponding path program 54 times [2018-10-04 14:25:51,837 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:51,837 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:51,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:51,837 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:51,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:51,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:53,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:53,742 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:53,743 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 [2018-10-04 14:25:53,749 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:25:54,127 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2018-10-04 14:25:54,127 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:54,131 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:54,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:54,495 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:54,495 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2018-10-04 14:25:54,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-04 14:25:54,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-04 14:25:54,496 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:54,496 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 57 states. [2018-10-04 14:25:55,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:55,088 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-10-04 14:25:55,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-04 14:25:55,088 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 112 [2018-10-04 14:25:55,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:55,089 INFO L225 Difference]: With dead ends: 117 [2018-10-04 14:25:55,089 INFO L226 Difference]: Without dead ends: 115 [2018-10-04 14:25:55,089 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.5s impTime 55 [2018-10-04 14:25:55,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-10-04 14:25:55,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-10-04 14:25:55,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-10-04 14:25:55,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-10-04 14:25:55,092 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 112 [2018-10-04 14:25:55,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:55,093 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-10-04 14:25:55,093 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-04 14:25:55,093 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-10-04 14:25:55,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-04 14:25:55,094 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:55,094 INFO L375 BasicCegarLoop]: trace histogram [56, 55, 1, 1, 1] [2018-10-04 14:25:55,094 INFO L423 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:55,094 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:55,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1865127485, now seen corresponding path program 55 times [2018-10-04 14:25:55,094 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:55,094 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:55,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:55,095 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:55,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:55,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:56,704 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:56,704 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:56,704 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 [2018-10-04 14:25:56,713 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:25:56,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:56,752 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:57,132 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:57,151 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:57,151 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-10-04 14:25:57,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-04 14:25:57,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-04 14:25:57,152 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:57,152 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 58 states. [2018-10-04 14:25:57,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:57,433 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2018-10-04 14:25:57,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-04 14:25:57,433 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 114 [2018-10-04 14:25:57,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:57,435 INFO L225 Difference]: With dead ends: 119 [2018-10-04 14:25:57,435 INFO L226 Difference]: Without dead ends: 117 [2018-10-04 14:25:57,435 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.2s impTime 56 [2018-10-04 14:25:57,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-10-04 14:25:57,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-10-04 14:25:57,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-10-04 14:25:57,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2018-10-04 14:25:57,438 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 114 [2018-10-04 14:25:57,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:57,438 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2018-10-04 14:25:57,439 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-04 14:25:57,439 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2018-10-04 14:25:57,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-04 14:25:57,439 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:57,439 INFO L375 BasicCegarLoop]: trace histogram [57, 56, 1, 1, 1] [2018-10-04 14:25:57,440 INFO L423 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:57,440 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:57,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1386202743, now seen corresponding path program 56 times [2018-10-04 14:25:57,440 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:57,440 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:57,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:57,441 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:25:57,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:57,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:58,610 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:58,610 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:58,611 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 [2018-10-04 14:25:58,619 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:25:58,660 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:25:58,661 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:58,663 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:59,704 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:59,725 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:59,725 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-10-04 14:25:59,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-04 14:25:59,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-04 14:25:59,726 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:59,726 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand 59 states. [2018-10-04 14:25:59,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:59,841 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-10-04 14:25:59,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-04 14:25:59,841 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 116 [2018-10-04 14:25:59,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:59,842 INFO L225 Difference]: With dead ends: 121 [2018-10-04 14:25:59,842 INFO L226 Difference]: Without dead ends: 119 [2018-10-04 14:25:59,842 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 57 [2018-10-04 14:25:59,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-10-04 14:25:59,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-10-04 14:25:59,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-10-04 14:25:59,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-10-04 14:25:59,845 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 116 [2018-10-04 14:25:59,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:59,845 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-10-04 14:25:59,845 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-04 14:25:59,845 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-10-04 14:25:59,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-04 14:25:59,846 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:59,846 INFO L375 BasicCegarLoop]: trace histogram [58, 57, 1, 1, 1] [2018-10-04 14:25:59,846 INFO L423 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:59,846 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:59,847 INFO L82 PathProgramCache]: Analyzing trace with hash 701026353, now seen corresponding path program 57 times [2018-10-04 14:25:59,847 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:59,847 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:59,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:59,847 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:59,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:59,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:26:01,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:01,273 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:26:01,273 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 [2018-10-04 14:26:01,280 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:26:01,806 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2018-10-04 14:26:01,806 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:26:01,810 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:26:03,919 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:03,940 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:26:03,940 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-10-04 14:26:03,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-04 14:26:03,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-04 14:26:03,941 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:26:03,941 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 60 states. [2018-10-04 14:26:04,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:26:04,031 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2018-10-04 14:26:04,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-04 14:26:04,031 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 118 [2018-10-04 14:26:04,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:26:04,032 INFO L225 Difference]: With dead ends: 123 [2018-10-04 14:26:04,032 INFO L226 Difference]: Without dead ends: 121 [2018-10-04 14:26:04,032 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4s Time 1.2s impTime 58 [2018-10-04 14:26:04,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-10-04 14:26:04,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-10-04 14:26:04,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-10-04 14:26:04,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2018-10-04 14:26:04,035 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 118 [2018-10-04 14:26:04,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:26:04,035 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2018-10-04 14:26:04,035 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-04 14:26:04,036 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2018-10-04 14:26:04,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-10-04 14:26:04,036 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:26:04,036 INFO L375 BasicCegarLoop]: trace histogram [59, 58, 1, 1, 1] [2018-10-04 14:26:04,037 INFO L423 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:26:04,037 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:26:04,037 INFO L82 PathProgramCache]: Analyzing trace with hash -623488149, now seen corresponding path program 58 times [2018-10-04 14:26:04,037 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:26:04,037 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:26:04,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:04,038 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:26:04,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:04,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:26:05,470 INFO L134 CoverageAnalysis]: Checked inductivity of 3422 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:05,470 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:26:05,470 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:26:05,479 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:26:05,522 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:26:05,523 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:26:05,526 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:26:05,741 INFO L134 CoverageAnalysis]: Checked inductivity of 3422 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:05,760 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:26:05,761 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-10-04 14:26:05,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-10-04 14:26:05,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-10-04 14:26:05,761 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:26:05,761 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand 61 states. [2018-10-04 14:26:05,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:26:05,886 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-10-04 14:26:05,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-04 14:26:05,886 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 120 [2018-10-04 14:26:05,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:26:05,887 INFO L225 Difference]: With dead ends: 125 [2018-10-04 14:26:05,887 INFO L226 Difference]: Without dead ends: 123 [2018-10-04 14:26:05,888 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 59 [2018-10-04 14:26:05,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-10-04 14:26:05,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-10-04 14:26:05,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-10-04 14:26:05,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2018-10-04 14:26:05,890 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 120 [2018-10-04 14:26:05,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:26:05,890 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2018-10-04 14:26:05,890 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-10-04 14:26:05,891 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2018-10-04 14:26:05,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-04 14:26:05,891 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:26:05,891 INFO L375 BasicCegarLoop]: trace histogram [60, 59, 1, 1, 1] [2018-10-04 14:26:05,892 INFO L423 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:26:05,892 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:26:05,892 INFO L82 PathProgramCache]: Analyzing trace with hash 2123362341, now seen corresponding path program 59 times [2018-10-04 14:26:05,892 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:26:05,892 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:26:05,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:05,893 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:26:05,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:05,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:26:07,610 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:07,611 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:26:07,611 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 [2018-10-04 14:26:07,618 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:26:09,542 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2018-10-04 14:26:09,542 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:26:09,547 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:26:09,909 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:09,931 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:26:09,931 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-10-04 14:26:09,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-04 14:26:09,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-04 14:26:09,932 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:26:09,932 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 62 states. [2018-10-04 14:26:10,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:26:10,067 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2018-10-04 14:26:10,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-04 14:26:10,067 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 122 [2018-10-04 14:26:10,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:26:10,068 INFO L225 Difference]: With dead ends: 127 [2018-10-04 14:26:10,068 INFO L226 Difference]: Without dead ends: 125 [2018-10-04 14:26:10,068 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.5s impTime 60 [2018-10-04 14:26:10,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-10-04 14:26:10,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-10-04 14:26:10,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-10-04 14:26:10,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 125 transitions. [2018-10-04 14:26:10,071 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 125 transitions. Word has length 122 [2018-10-04 14:26:10,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:26:10,071 INFO L480 AbstractCegarLoop]: Abstraction has 125 states and 125 transitions. [2018-10-04 14:26:10,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-04 14:26:10,072 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 125 transitions. [2018-10-04 14:26:10,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-04 14:26:10,072 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:26:10,073 INFO L375 BasicCegarLoop]: trace histogram [61, 60, 1, 1, 1] [2018-10-04 14:26:10,073 INFO L423 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:26:10,073 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:26:10,073 INFO L82 PathProgramCache]: Analyzing trace with hash 441796191, now seen corresponding path program 60 times [2018-10-04 14:26:10,073 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:26:10,073 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:26:10,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:10,074 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:26:10,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:10,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:26:11,813 INFO L134 CoverageAnalysis]: Checked inductivity of 3660 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:11,813 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:26:11,813 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 [2018-10-04 14:26:11,822 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:26:12,352 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2018-10-04 14:26:12,353 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:26:12,357 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:26:12,689 INFO L134 CoverageAnalysis]: Checked inductivity of 3660 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:12,710 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:26:12,710 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2018-10-04 14:26:12,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-04 14:26:12,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-04 14:26:12,711 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:26:12,711 INFO L87 Difference]: Start difference. First operand 125 states and 125 transitions. Second operand 63 states. [2018-10-04 14:26:12,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:26:12,869 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-10-04 14:26:12,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-04 14:26:12,869 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 124 [2018-10-04 14:26:12,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:26:12,870 INFO L225 Difference]: With dead ends: 129 [2018-10-04 14:26:12,870 INFO L226 Difference]: Without dead ends: 127 [2018-10-04 14:26:12,870 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.5s impTime 61 [2018-10-04 14:26:12,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-10-04 14:26:12,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-10-04 14:26:12,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-10-04 14:26:12,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-10-04 14:26:12,874 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 124 [2018-10-04 14:26:12,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:26:12,874 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-10-04 14:26:12,874 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-04 14:26:12,874 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-10-04 14:26:12,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-04 14:26:12,875 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:26:12,875 INFO L375 BasicCegarLoop]: trace histogram [62, 61, 1, 1, 1] [2018-10-04 14:26:12,875 INFO L423 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:26:12,875 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:26:12,876 INFO L82 PathProgramCache]: Analyzing trace with hash -635570663, now seen corresponding path program 61 times [2018-10-04 14:26:12,876 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:26:12,876 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:26:12,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:12,876 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:26:12,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:12,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:26:13,952 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:13,952 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:26:13,952 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 [2018-10-04 14:26:13,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:26:14,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:26:14,010 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:26:14,231 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:14,252 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:26:14,252 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-10-04 14:26:14,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-04 14:26:14,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-04 14:26:14,253 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:26:14,253 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 64 states. [2018-10-04 14:26:14,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:26:14,365 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2018-10-04 14:26:14,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-04 14:26:14,365 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 126 [2018-10-04 14:26:14,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:26:14,366 INFO L225 Difference]: With dead ends: 131 [2018-10-04 14:26:14,366 INFO L226 Difference]: Without dead ends: 129 [2018-10-04 14:26:14,366 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.9s impTime 62 [2018-10-04 14:26:14,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-10-04 14:26:14,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-10-04 14:26:14,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-10-04 14:26:14,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 129 transitions. [2018-10-04 14:26:14,369 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 129 transitions. Word has length 126 [2018-10-04 14:26:14,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:26:14,369 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 129 transitions. [2018-10-04 14:26:14,369 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-04 14:26:14,369 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 129 transitions. [2018-10-04 14:26:14,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-04 14:26:14,370 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:26:14,370 INFO L375 BasicCegarLoop]: trace histogram [63, 62, 1, 1, 1] [2018-10-04 14:26:14,370 INFO L423 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:26:14,370 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:26:14,370 INFO L82 PathProgramCache]: Analyzing trace with hash -897999021, now seen corresponding path program 62 times [2018-10-04 14:26:14,370 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:26:14,370 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:26:14,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:14,371 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:26:14,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:14,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:26:15,524 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:15,524 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:26:15,524 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 [2018-10-04 14:26:15,534 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:26:15,580 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:26:15,580 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:26:15,583 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:26:15,819 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:15,840 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:26:15,840 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-10-04 14:26:15,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-04 14:26:15,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-04 14:26:15,841 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:26:15,841 INFO L87 Difference]: Start difference. First operand 129 states and 129 transitions. Second operand 65 states. [2018-10-04 14:26:15,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:26:15,956 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-10-04 14:26:15,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-04 14:26:15,956 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 128 [2018-10-04 14:26:15,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:26:15,957 INFO L225 Difference]: With dead ends: 133 [2018-10-04 14:26:15,957 INFO L226 Difference]: Without dead ends: 131 [2018-10-04 14:26:15,958 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.9s impTime 63 [2018-10-04 14:26:15,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-10-04 14:26:15,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-10-04 14:26:15,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-10-04 14:26:15,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2018-10-04 14:26:15,961 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 128 [2018-10-04 14:26:15,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:26:15,961 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2018-10-04 14:26:15,961 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-04 14:26:15,961 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2018-10-04 14:26:15,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-04 14:26:15,962 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:26:15,962 INFO L375 BasicCegarLoop]: trace histogram [64, 63, 1, 1, 1] [2018-10-04 14:26:15,962 INFO L423 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:26:15,962 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:26:15,962 INFO L82 PathProgramCache]: Analyzing trace with hash 311419405, now seen corresponding path program 63 times [2018-10-04 14:26:15,963 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:26:15,963 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:26:15,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:15,963 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:26:15,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:15,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:26:17,069 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:17,069 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:26:17,070 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:26:17,079 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:26:17,805 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2018-10-04 14:26:17,805 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:26:17,809 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:26:18,063 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:18,084 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:26:18,084 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-10-04 14:26:18,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-04 14:26:18,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-04 14:26:18,085 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:26:18,086 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 66 states. [2018-10-04 14:26:18,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:26:18,247 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2018-10-04 14:26:18,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-04 14:26:18,247 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 130 [2018-10-04 14:26:18,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:26:18,248 INFO L225 Difference]: With dead ends: 135 [2018-10-04 14:26:18,248 INFO L226 Difference]: Without dead ends: 133 [2018-10-04 14:26:18,248 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.9s impTime 64 [2018-10-04 14:26:18,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-10-04 14:26:18,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-10-04 14:26:18,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-10-04 14:26:18,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2018-10-04 14:26:18,251 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 130 [2018-10-04 14:26:18,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:26:18,252 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2018-10-04 14:26:18,252 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-04 14:26:18,252 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2018-10-04 14:26:18,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-04 14:26:18,253 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:26:18,253 INFO L375 BasicCegarLoop]: trace histogram [65, 64, 1, 1, 1] [2018-10-04 14:26:18,253 INFO L423 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:26:18,253 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:26:18,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1373610425, now seen corresponding path program 64 times [2018-10-04 14:26:18,253 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:26:18,253 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:26:18,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:18,255 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:26:18,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:18,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:26:20,208 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:20,209 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:26:20,209 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 [2018-10-04 14:26:20,218 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:26:20,287 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:26:20,287 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:26:20,291 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:26:20,716 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:20,736 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:26:20,736 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-10-04 14:26:20,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-04 14:26:20,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-04 14:26:20,737 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:26:20,737 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 67 states. [2018-10-04 14:26:20,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:26:20,897 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-10-04 14:26:20,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-04 14:26:20,898 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 132 [2018-10-04 14:26:20,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:26:20,899 INFO L225 Difference]: With dead ends: 137 [2018-10-04 14:26:20,899 INFO L226 Difference]: Without dead ends: 135 [2018-10-04 14:26:20,899 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.7s impTime 65 [2018-10-04 14:26:20,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-10-04 14:26:20,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-10-04 14:26:20,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-10-04 14:26:20,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-10-04 14:26:20,902 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 132 [2018-10-04 14:26:20,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:26:20,902 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-10-04 14:26:20,902 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-04 14:26:20,902 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-10-04 14:26:20,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-04 14:26:20,903 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:26:20,903 INFO L375 BasicCegarLoop]: trace histogram [66, 65, 1, 1, 1] [2018-10-04 14:26:20,903 INFO L423 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:26:20,903 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:26:20,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1484606463, now seen corresponding path program 65 times [2018-10-04 14:26:20,904 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:26:20,904 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:26:20,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:20,904 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:26:20,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:20,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:26:22,542 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:22,542 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:26:22,542 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:26:22,549 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:26:25,383 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2018-10-04 14:26:25,383 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:26:25,388 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:26:25,664 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:25,687 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:26:25,688 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-10-04 14:26:25,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-04 14:26:25,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-04 14:26:25,689 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:26:25,689 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 68 states. [2018-10-04 14:26:25,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:26:25,852 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2018-10-04 14:26:25,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-04 14:26:25,852 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 134 [2018-10-04 14:26:25,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:26:25,853 INFO L225 Difference]: With dead ends: 139 [2018-10-04 14:26:25,853 INFO L226 Difference]: Without dead ends: 137 [2018-10-04 14:26:25,853 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.4s impTime 66 [2018-10-04 14:26:25,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-10-04 14:26:25,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-10-04 14:26:25,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-10-04 14:26:25,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 137 transitions. [2018-10-04 14:26:25,855 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 137 transitions. Word has length 134 [2018-10-04 14:26:25,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:26:25,856 INFO L480 AbstractCegarLoop]: Abstraction has 137 states and 137 transitions. [2018-10-04 14:26:25,856 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-04 14:26:25,856 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 137 transitions. [2018-10-04 14:26:25,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-04 14:26:25,856 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:26:25,856 INFO L375 BasicCegarLoop]: trace histogram [67, 66, 1, 1, 1] [2018-10-04 14:26:25,857 INFO L423 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:26:25,857 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:26:25,857 INFO L82 PathProgramCache]: Analyzing trace with hash -777616581, now seen corresponding path program 66 times [2018-10-04 14:26:25,857 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:26:25,857 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:26:25,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:25,858 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:26:25,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:25,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:26:27,102 INFO L134 CoverageAnalysis]: Checked inductivity of 4422 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:27,103 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:26:27,103 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:26:27,109 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:26:27,837 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2018-10-04 14:26:27,837 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:26:27,842 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:26:28,139 INFO L134 CoverageAnalysis]: Checked inductivity of 4422 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:28,161 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:26:28,162 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 68 [2018-10-04 14:26:28,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-10-04 14:26:28,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-10-04 14:26:28,163 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:26:28,163 INFO L87 Difference]: Start difference. First operand 137 states and 137 transitions. Second operand 69 states. [2018-10-04 14:26:28,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:26:28,304 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-10-04 14:26:28,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-04 14:26:28,304 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 136 [2018-10-04 14:26:28,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:26:28,305 INFO L225 Difference]: With dead ends: 141 [2018-10-04 14:26:28,305 INFO L226 Difference]: Without dead ends: 139 [2018-10-04 14:26:28,305 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 67 [2018-10-04 14:26:28,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-10-04 14:26:28,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-10-04 14:26:28,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-10-04 14:26:28,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2018-10-04 14:26:28,308 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 136 [2018-10-04 14:26:28,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:26:28,309 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2018-10-04 14:26:28,309 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-10-04 14:26:28,309 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2018-10-04 14:26:28,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-04 14:26:28,309 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:26:28,309 INFO L375 BasicCegarLoop]: trace histogram [68, 67, 1, 1, 1] [2018-10-04 14:26:28,310 INFO L423 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:26:28,310 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:26:28,310 INFO L82 PathProgramCache]: Analyzing trace with hash 34827253, now seen corresponding path program 67 times [2018-10-04 14:26:28,310 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:26:28,310 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:26:28,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:28,310 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:26:28,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:28,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:26:30,186 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:30,186 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:26:30,186 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:26:30,194 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:26:30,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:26:30,244 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:26:30,505 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:30,525 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:26:30,525 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-10-04 14:26:30,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-04 14:26:30,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-04 14:26:30,526 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:26:30,526 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 70 states. [2018-10-04 14:26:30,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:26:30,706 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-10-04 14:26:30,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-04 14:26:30,706 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 138 [2018-10-04 14:26:30,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:26:30,707 INFO L225 Difference]: With dead ends: 143 [2018-10-04 14:26:30,707 INFO L226 Difference]: Without dead ends: 141 [2018-10-04 14:26:30,707 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.6s impTime 68 [2018-10-04 14:26:30,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-10-04 14:26:30,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-10-04 14:26:30,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-10-04 14:26:30,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2018-10-04 14:26:30,711 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 138 [2018-10-04 14:26:30,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:26:30,711 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2018-10-04 14:26:30,711 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-04 14:26:30,711 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2018-10-04 14:26:30,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-04 14:26:30,712 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:26:30,712 INFO L375 BasicCegarLoop]: trace histogram [69, 68, 1, 1, 1] [2018-10-04 14:26:30,712 INFO L423 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:26:30,712 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:26:30,713 INFO L82 PathProgramCache]: Analyzing trace with hash -890696145, now seen corresponding path program 68 times [2018-10-04 14:26:30,713 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:26:30,713 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:26:30,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:30,713 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:26:30,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:30,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:26:32,544 INFO L134 CoverageAnalysis]: Checked inductivity of 4692 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:32,544 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:26:32,544 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:26:32,551 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:26:32,604 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:26:32,604 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:26:32,606 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:26:33,064 INFO L134 CoverageAnalysis]: Checked inductivity of 4692 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:33,084 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:26:33,084 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-10-04 14:26:33,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-04 14:26:33,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-04 14:26:33,085 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:26:33,085 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 71 states. [2018-10-04 14:26:33,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:26:33,277 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-10-04 14:26:33,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-04 14:26:33,277 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 140 [2018-10-04 14:26:33,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:26:33,278 INFO L225 Difference]: With dead ends: 145 [2018-10-04 14:26:33,278 INFO L226 Difference]: Without dead ends: 143 [2018-10-04 14:26:33,279 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.6s impTime 69 [2018-10-04 14:26:33,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-10-04 14:26:33,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-10-04 14:26:33,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-10-04 14:26:33,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2018-10-04 14:26:33,283 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 140 [2018-10-04 14:26:33,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:26:33,283 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2018-10-04 14:26:33,283 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-04 14:26:33,283 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2018-10-04 14:26:33,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-04 14:26:33,284 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:26:33,284 INFO L375 BasicCegarLoop]: trace histogram [70, 69, 1, 1, 1] [2018-10-04 14:26:33,284 INFO L423 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:26:33,285 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:26:33,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1260451351, now seen corresponding path program 69 times [2018-10-04 14:26:33,285 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:26:33,285 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:26:33,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:33,286 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:26:33,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:33,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:26:35,419 INFO L134 CoverageAnalysis]: Checked inductivity of 4830 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:35,420 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:26:35,420 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 [2018-10-04 14:26:35,427 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:26:36,466 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2018-10-04 14:26:36,466 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:26:36,472 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:26:36,951 INFO L134 CoverageAnalysis]: Checked inductivity of 4830 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:36,971 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:26:36,972 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2018-10-04 14:26:36,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-04 14:26:36,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-04 14:26:36,973 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:26:36,973 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand 72 states. [2018-10-04 14:26:37,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:26:37,179 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2018-10-04 14:26:37,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-04 14:26:37,179 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 142 [2018-10-04 14:26:37,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:26:37,180 INFO L225 Difference]: With dead ends: 147 [2018-10-04 14:26:37,180 INFO L226 Difference]: Without dead ends: 145 [2018-10-04 14:26:37,180 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 1.9s impTime 70 [2018-10-04 14:26:37,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-10-04 14:26:37,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-10-04 14:26:37,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-10-04 14:26:37,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2018-10-04 14:26:37,183 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 142 [2018-10-04 14:26:37,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:26:37,183 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2018-10-04 14:26:37,183 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-04 14:26:37,184 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2018-10-04 14:26:37,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-04 14:26:37,184 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:26:37,184 INFO L375 BasicCegarLoop]: trace histogram [71, 70, 1, 1, 1] [2018-10-04 14:26:37,184 INFO L423 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:26:37,185 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:26:37,185 INFO L82 PathProgramCache]: Analyzing trace with hash -112918749, now seen corresponding path program 70 times [2018-10-04 14:26:37,185 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:26:37,185 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:26:37,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:37,186 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:26:37,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:37,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:26:39,665 INFO L134 CoverageAnalysis]: Checked inductivity of 4970 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:39,665 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:26:39,665 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:26:39,673 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:26:39,737 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:26:39,737 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:26:39,740 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:26:39,974 INFO L134 CoverageAnalysis]: Checked inductivity of 4970 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:39,993 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:26:39,994 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2018-10-04 14:26:39,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-04 14:26:39,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-04 14:26:39,995 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:26:39,995 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand 73 states. [2018-10-04 14:26:40,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:26:40,197 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-10-04 14:26:40,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-04 14:26:40,197 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 144 [2018-10-04 14:26:40,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:26:40,198 INFO L225 Difference]: With dead ends: 149 [2018-10-04 14:26:40,198 INFO L226 Difference]: Without dead ends: 147 [2018-10-04 14:26:40,198 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 71 [2018-10-04 14:26:40,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-10-04 14:26:40,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-10-04 14:26:40,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-10-04 14:26:40,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2018-10-04 14:26:40,202 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 144 [2018-10-04 14:26:40,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:26:40,203 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2018-10-04 14:26:40,203 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-04 14:26:40,203 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2018-10-04 14:26:40,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-04 14:26:40,204 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:26:40,204 INFO L375 BasicCegarLoop]: trace histogram [72, 71, 1, 1, 1] [2018-10-04 14:26:40,204 INFO L423 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:26:40,204 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:26:40,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1140683299, now seen corresponding path program 71 times [2018-10-04 14:26:40,204 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:26:40,205 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:26:40,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:40,205 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:26:40,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:40,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:26:42,057 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:42,057 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:26:42,058 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:26:42,065 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:26:45,945 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 72 check-sat command(s) [2018-10-04 14:26:45,945 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:26:45,950 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:26:46,215 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:46,239 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:26:46,240 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2018-10-04 14:26:46,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-04 14:26:46,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-04 14:26:46,240 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:26:46,241 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 74 states. [2018-10-04 14:26:46,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:26:46,432 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2018-10-04 14:26:46,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-04 14:26:46,432 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 146 [2018-10-04 14:26:46,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:26:46,433 INFO L225 Difference]: With dead ends: 151 [2018-10-04 14:26:46,433 INFO L226 Difference]: Without dead ends: 149 [2018-10-04 14:26:46,433 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.6s impTime 72 [2018-10-04 14:26:46,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-10-04 14:26:46,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-10-04 14:26:46,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-10-04 14:26:46,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 149 transitions. [2018-10-04 14:26:46,437 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 149 transitions. Word has length 146 [2018-10-04 14:26:46,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:26:46,437 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 149 transitions. [2018-10-04 14:26:46,437 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-04 14:26:46,437 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 149 transitions. [2018-10-04 14:26:46,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-04 14:26:46,438 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:26:46,438 INFO L375 BasicCegarLoop]: trace histogram [73, 72, 1, 1, 1] [2018-10-04 14:26:46,438 INFO L423 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:26:46,438 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:26:46,439 INFO L82 PathProgramCache]: Analyzing trace with hash -979937769, now seen corresponding path program 72 times [2018-10-04 14:26:46,439 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:26:46,439 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:26:46,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:46,439 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:26:46,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:46,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:26:47,874 INFO L134 CoverageAnalysis]: Checked inductivity of 5256 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:47,874 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:26:47,874 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:26:47,881 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:26:48,818 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2018-10-04 14:26:48,819 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:26:48,824 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:26:49,113 INFO L134 CoverageAnalysis]: Checked inductivity of 5256 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:49,134 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:26:49,135 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 74 [2018-10-04 14:26:49,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-10-04 14:26:49,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-10-04 14:26:49,136 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:26:49,136 INFO L87 Difference]: Start difference. First operand 149 states and 149 transitions. Second operand 75 states. [2018-10-04 14:26:49,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:26:49,269 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2018-10-04 14:26:49,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-04 14:26:49,269 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 148 [2018-10-04 14:26:49,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:26:49,270 INFO L225 Difference]: With dead ends: 153 [2018-10-04 14:26:49,270 INFO L226 Difference]: Without dead ends: 151 [2018-10-04 14:26:49,270 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 73 [2018-10-04 14:26:49,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-10-04 14:26:49,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-10-04 14:26:49,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-10-04 14:26:49,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2018-10-04 14:26:49,275 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 148 [2018-10-04 14:26:49,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:26:49,275 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2018-10-04 14:26:49,276 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-10-04 14:26:49,276 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2018-10-04 14:26:49,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-10-04 14:26:49,276 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:26:49,277 INFO L375 BasicCegarLoop]: trace histogram [74, 73, 1, 1, 1] [2018-10-04 14:26:49,277 INFO L423 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:26:49,277 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:26:49,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1122306095, now seen corresponding path program 73 times [2018-10-04 14:26:49,277 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:26:49,277 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:26:49,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:49,278 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:26:49,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:49,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:26:51,747 INFO L134 CoverageAnalysis]: Checked inductivity of 5402 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:51,748 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:26:51,748 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:26:51,754 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:26:51,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:26:51,808 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:26:52,093 INFO L134 CoverageAnalysis]: Checked inductivity of 5402 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:52,113 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:26:52,113 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2018-10-04 14:26:52,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-04 14:26:52,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-04 14:26:52,114 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:26:52,114 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 76 states. [2018-10-04 14:26:52,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:26:52,328 INFO L93 Difference]: Finished difference Result 155 states and 155 transitions. [2018-10-04 14:26:52,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-04 14:26:52,328 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 150 [2018-10-04 14:26:52,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:26:52,329 INFO L225 Difference]: With dead ends: 155 [2018-10-04 14:26:52,329 INFO L226 Difference]: Without dead ends: 153 [2018-10-04 14:26:52,329 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 74 [2018-10-04 14:26:52,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-10-04 14:26:52,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-10-04 14:26:52,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-10-04 14:26:52,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 153 transitions. [2018-10-04 14:26:52,333 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 153 transitions. Word has length 150 [2018-10-04 14:26:52,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:26:52,333 INFO L480 AbstractCegarLoop]: Abstraction has 153 states and 153 transitions. [2018-10-04 14:26:52,333 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-04 14:26:52,334 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 153 transitions. [2018-10-04 14:26:52,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-10-04 14:26:52,334 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:26:52,334 INFO L375 BasicCegarLoop]: trace histogram [75, 74, 1, 1, 1] [2018-10-04 14:26:52,335 INFO L423 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:26:52,335 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:26:52,335 INFO L82 PathProgramCache]: Analyzing trace with hash -499313909, now seen corresponding path program 74 times [2018-10-04 14:26:52,335 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:26:52,335 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:26:52,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:52,336 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:26:52,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:52,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:26:54,023 INFO L134 CoverageAnalysis]: Checked inductivity of 5550 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:54,024 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:26:54,024 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 [2018-10-04 14:26:54,031 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:26:54,084 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:26:54,084 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:26:54,087 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:26:54,351 INFO L134 CoverageAnalysis]: Checked inductivity of 5550 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:54,371 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:26:54,371 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2018-10-04 14:26:54,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-10-04 14:26:54,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-10-04 14:26:54,372 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:26:54,372 INFO L87 Difference]: Start difference. First operand 153 states and 153 transitions. Second operand 77 states. [2018-10-04 14:26:54,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:26:54,528 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-10-04 14:26:54,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-04 14:26:54,528 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 152 [2018-10-04 14:26:54,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:26:54,529 INFO L225 Difference]: With dead ends: 157 [2018-10-04 14:26:54,529 INFO L226 Difference]: Without dead ends: 155 [2018-10-04 14:26:54,529 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 75 [2018-10-04 14:26:54,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-10-04 14:26:54,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-10-04 14:26:54,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-10-04 14:26:54,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 155 transitions. [2018-10-04 14:26:54,532 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 155 transitions. Word has length 152 [2018-10-04 14:26:54,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:26:54,533 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 155 transitions. [2018-10-04 14:26:54,533 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-10-04 14:26:54,533 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 155 transitions. [2018-10-04 14:26:54,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-10-04 14:26:54,533 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:26:54,533 INFO L375 BasicCegarLoop]: trace histogram [76, 75, 1, 1, 1] [2018-10-04 14:26:54,534 INFO L423 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:26:54,534 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:26:54,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1195722693, now seen corresponding path program 75 times [2018-10-04 14:26:54,534 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:26:54,534 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:26:54,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:54,534 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:26:54,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:54,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:26:56,655 INFO L134 CoverageAnalysis]: Checked inductivity of 5700 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:56,655 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:26:56,655 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 [2018-10-04 14:26:56,662 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:26:58,048 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 76 check-sat command(s) [2018-10-04 14:26:58,048 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:26:58,053 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:26:58,415 INFO L134 CoverageAnalysis]: Checked inductivity of 5700 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:58,437 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:26:58,437 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2018-10-04 14:26:58,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-10-04 14:26:58,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-10-04 14:26:58,438 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:26:58,438 INFO L87 Difference]: Start difference. First operand 155 states and 155 transitions. Second operand 78 states. [2018-10-04 14:26:58,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:26:58,650 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2018-10-04 14:26:58,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-10-04 14:26:58,651 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 154 [2018-10-04 14:26:58,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:26:58,651 INFO L225 Difference]: With dead ends: 159 [2018-10-04 14:26:58,651 INFO L226 Difference]: Without dead ends: 157 [2018-10-04 14:26:58,652 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.9s impTime 76 [2018-10-04 14:26:58,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-10-04 14:26:58,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-10-04 14:26:58,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-10-04 14:26:58,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 157 transitions. [2018-10-04 14:26:58,655 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 157 transitions. Word has length 154 [2018-10-04 14:26:58,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:26:58,655 INFO L480 AbstractCegarLoop]: Abstraction has 157 states and 157 transitions. [2018-10-04 14:26:58,655 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-10-04 14:26:58,655 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 157 transitions. [2018-10-04 14:26:58,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-10-04 14:26:58,656 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:26:58,656 INFO L375 BasicCegarLoop]: trace histogram [77, 76, 1, 1, 1] [2018-10-04 14:26:58,656 INFO L423 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:26:58,656 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:26:58,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1961675265, now seen corresponding path program 76 times [2018-10-04 14:26:58,657 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:26:58,657 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:26:58,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:58,657 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:26:58,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:58,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:27:00,844 INFO L134 CoverageAnalysis]: Checked inductivity of 5852 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:27:00,844 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:27:00,844 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 [2018-10-04 14:27:00,853 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:27:00,908 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:27:00,909 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:27:00,911 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:27:01,178 INFO L134 CoverageAnalysis]: Checked inductivity of 5852 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:27:01,198 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:27:01,198 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2018-10-04 14:27:01,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-10-04 14:27:01,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-10-04 14:27:01,199 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:27:01,199 INFO L87 Difference]: Start difference. First operand 157 states and 157 transitions. Second operand 79 states. [2018-10-04 14:27:01,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:27:01,846 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2018-10-04 14:27:01,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-10-04 14:27:01,847 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 156 [2018-10-04 14:27:01,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:27:01,848 INFO L225 Difference]: With dead ends: 161 [2018-10-04 14:27:01,848 INFO L226 Difference]: Without dead ends: 159 [2018-10-04 14:27:01,848 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 77 [2018-10-04 14:27:01,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-10-04 14:27:01,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-10-04 14:27:01,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-10-04 14:27:01,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2018-10-04 14:27:01,853 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 156 [2018-10-04 14:27:01,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:27:01,854 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2018-10-04 14:27:01,854 INFO L481 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-10-04 14:27:01,854 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2018-10-04 14:27:01,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-04 14:27:01,855 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:27:01,855 INFO L375 BasicCegarLoop]: trace histogram [78, 77, 1, 1, 1] [2018-10-04 14:27:01,855 INFO L423 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:27:01,855 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:27:01,855 INFO L82 PathProgramCache]: Analyzing trace with hash 320765369, now seen corresponding path program 77 times [2018-10-04 14:27:01,856 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:27:01,856 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:27:01,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:27:01,856 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:27:01,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:27:01,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:27:04,419 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:27:04,419 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:27:04,419 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:27:04,427 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:27:09,884 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 78 check-sat command(s) [2018-10-04 14:27:09,884 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:27:09,889 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:27:10,147 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:27:10,171 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:27:10,172 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2018-10-04 14:27:10,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-04 14:27:10,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-04 14:27:10,173 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:27:10,173 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand 80 states. [2018-10-04 14:27:10,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:27:10,414 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2018-10-04 14:27:10,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-10-04 14:27:10,414 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 158 [2018-10-04 14:27:10,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:27:10,415 INFO L225 Difference]: With dead ends: 163 [2018-10-04 14:27:10,415 INFO L226 Difference]: Without dead ends: 161 [2018-10-04 14:27:10,415 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 78 [2018-10-04 14:27:10,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-10-04 14:27:10,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-10-04 14:27:10,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-10-04 14:27:10,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions. [2018-10-04 14:27:10,419 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 158 [2018-10-04 14:27:10,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:27:10,420 INFO L480 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions. [2018-10-04 14:27:10,420 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-04 14:27:10,420 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions. [2018-10-04 14:27:10,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-10-04 14:27:10,421 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:27:10,421 INFO L375 BasicCegarLoop]: trace histogram [79, 78, 1, 1, 1] [2018-10-04 14:27:10,421 INFO L423 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:27:10,421 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:27:10,421 INFO L82 PathProgramCache]: Analyzing trace with hash -982073613, now seen corresponding path program 78 times [2018-10-04 14:27:10,421 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:27:10,422 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:27:10,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:27:10,422 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:27:10,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:27:10,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:27:12,434 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:27:12,435 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:27:12,435 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:27:12,442 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:27:13,728 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2018-10-04 14:27:13,728 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:27:13,733 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:27:14,132 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:27:14,154 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:27:14,154 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 80 [2018-10-04 14:27:14,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-10-04 14:27:14,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-10-04 14:27:14,155 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:27:14,155 INFO L87 Difference]: Start difference. First operand 161 states and 161 transitions. Second operand 81 states. [2018-10-04 14:27:14,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:27:14,319 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2018-10-04 14:27:14,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-04 14:27:14,319 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 160 [2018-10-04 14:27:14,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:27:14,320 INFO L225 Difference]: With dead ends: 165 [2018-10-04 14:27:14,320 INFO L226 Difference]: Without dead ends: 163 [2018-10-04 14:27:14,320 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.7s impTime 79 [2018-10-04 14:27:14,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-10-04 14:27:14,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-10-04 14:27:14,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-10-04 14:27:14,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 163 transitions. [2018-10-04 14:27:14,324 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 163 transitions. Word has length 160 [2018-10-04 14:27:14,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:27:14,324 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 163 transitions. [2018-10-04 14:27:14,324 INFO L481 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-10-04 14:27:14,324 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 163 transitions. [2018-10-04 14:27:14,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-10-04 14:27:14,325 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:27:14,325 INFO L375 BasicCegarLoop]: trace histogram [80, 79, 1, 1, 1] [2018-10-04 14:27:14,325 INFO L423 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:27:14,325 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:27:14,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1120115117, now seen corresponding path program 79 times [2018-10-04 14:27:14,326 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:27:14,326 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:27:14,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:27:14,327 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:27:14,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:27:14,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:27:16,284 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:27:16,284 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:27:16,284 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 [2018-10-04 14:27:16,291 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:27:16,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:27:16,350 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:27:16,682 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:27:16,702 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:27:16,702 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2018-10-04 14:27:16,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-10-04 14:27:16,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-10-04 14:27:16,703 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:27:16,703 INFO L87 Difference]: Start difference. First operand 163 states and 163 transitions. Second operand 82 states. [2018-10-04 14:27:16,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:27:16,915 INFO L93 Difference]: Finished difference Result 167 states and 167 transitions. [2018-10-04 14:27:16,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-10-04 14:27:16,915 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 162 [2018-10-04 14:27:16,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:27:16,916 INFO L225 Difference]: With dead ends: 167 [2018-10-04 14:27:16,916 INFO L226 Difference]: Without dead ends: 165 [2018-10-04 14:27:16,917 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.6s impTime 80 [2018-10-04 14:27:16,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-10-04 14:27:16,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-10-04 14:27:16,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-10-04 14:27:16,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 165 transitions. [2018-10-04 14:27:16,919 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 165 transitions. Word has length 162 [2018-10-04 14:27:16,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:27:16,919 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 165 transitions. [2018-10-04 14:27:16,920 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-10-04 14:27:16,920 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 165 transitions. [2018-10-04 14:27:16,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-10-04 14:27:16,920 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:27:16,921 INFO L375 BasicCegarLoop]: trace histogram [81, 80, 1, 1, 1] [2018-10-04 14:27:16,921 INFO L423 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:27:16,921 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:27:16,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1606111769, now seen corresponding path program 80 times [2018-10-04 14:27:16,921 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:27:16,921 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:27:16,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:27:16,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:27:16,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:27:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:27:19,776 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:27:19,776 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:27:19,777 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:27:19,784 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:27:19,837 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:27:19,838 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:27:19,840 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:27:20,114 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:27:20,135 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:27:20,135 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 82 [2018-10-04 14:27:20,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-10-04 14:27:20,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-10-04 14:27:20,136 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:27:20,136 INFO L87 Difference]: Start difference. First operand 165 states and 165 transitions. Second operand 83 states. [2018-10-04 14:27:20,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:27:20,413 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-10-04 14:27:20,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-10-04 14:27:20,413 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 164 [2018-10-04 14:27:20,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:27:20,414 INFO L225 Difference]: With dead ends: 169 [2018-10-04 14:27:20,414 INFO L226 Difference]: Without dead ends: 167 [2018-10-04 14:27:20,414 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time 2.6s impTime 81 [2018-10-04 14:27:20,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-10-04 14:27:20,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-10-04 14:27:20,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-10-04 14:27:20,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2018-10-04 14:27:20,417 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 164 [2018-10-04 14:27:20,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:27:20,417 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2018-10-04 14:27:20,417 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-10-04 14:27:20,417 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2018-10-04 14:27:20,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-10-04 14:27:20,418 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:27:20,418 INFO L375 BasicCegarLoop]: trace histogram [82, 81, 1, 1, 1] [2018-10-04 14:27:20,418 INFO L423 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:27:20,418 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:27:20,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1580098655, now seen corresponding path program 81 times [2018-10-04 14:27:20,418 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:27:20,418 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:27:20,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:27:20,419 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:27:20,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:27:20,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:27:22,399 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:27:22,399 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:27:22,399 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:27:22,407 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:27:24,319 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 82 check-sat command(s) [2018-10-04 14:27:24,319 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:27:24,326 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:27:24,597 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:27:24,619 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:27:24,620 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2018-10-04 14:27:24,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-10-04 14:27:24,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-10-04 14:27:24,621 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:27:24,621 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 84 states. [2018-10-04 14:27:24,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:27:24,857 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2018-10-04 14:27:24,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-10-04 14:27:24,857 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 166 [2018-10-04 14:27:24,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:27:24,858 INFO L225 Difference]: With dead ends: 171 [2018-10-04 14:27:24,858 INFO L226 Difference]: Without dead ends: 169 [2018-10-04 14:27:24,858 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.7s impTime 82 [2018-10-04 14:27:24,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-10-04 14:27:24,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-10-04 14:27:24,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-10-04 14:27:24,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 169 transitions. [2018-10-04 14:27:24,862 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 169 transitions. Word has length 166 [2018-10-04 14:27:24,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:27:24,862 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 169 transitions. [2018-10-04 14:27:24,862 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-10-04 14:27:24,862 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 169 transitions. [2018-10-04 14:27:24,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-10-04 14:27:24,862 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:27:24,863 INFO L375 BasicCegarLoop]: trace histogram [83, 82, 1, 1, 1] [2018-10-04 14:27:24,863 INFO L423 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:27:24,863 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:27:24,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1943667419, now seen corresponding path program 82 times [2018-10-04 14:27:24,863 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:27:24,863 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:27:24,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:27:24,864 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:27:24,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:27:24,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:27:26,804 INFO L134 CoverageAnalysis]: Checked inductivity of 6806 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:27:26,805 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:27:26,805 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:27:26,814 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:27:26,871 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:27:26,871 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:27:26,874 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:27:27,266 INFO L134 CoverageAnalysis]: Checked inductivity of 6806 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:27:27,286 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:27:27,287 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 84 [2018-10-04 14:27:27,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-10-04 14:27:27,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-10-04 14:27:27,288 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:27:27,288 INFO L87 Difference]: Start difference. First operand 169 states and 169 transitions. Second operand 85 states. [2018-10-04 14:27:27,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:27:27,465 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2018-10-04 14:27:27,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-10-04 14:27:27,465 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 168 [2018-10-04 14:27:27,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:27:27,466 INFO L225 Difference]: With dead ends: 173 [2018-10-04 14:27:27,466 INFO L226 Difference]: Without dead ends: 171 [2018-10-04 14:27:27,466 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.6s impTime 83 [2018-10-04 14:27:27,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-10-04 14:27:27,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-10-04 14:27:27,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-10-04 14:27:27,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2018-10-04 14:27:27,469 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 168 [2018-10-04 14:27:27,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:27:27,469 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2018-10-04 14:27:27,469 INFO L481 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-10-04 14:27:27,469 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2018-10-04 14:27:27,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-04 14:27:27,470 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:27:27,470 INFO L375 BasicCegarLoop]: trace histogram [84, 83, 1, 1, 1] [2018-10-04 14:27:27,470 INFO L423 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:27:27,470 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:27:27,470 INFO L82 PathProgramCache]: Analyzing trace with hash -446332011, now seen corresponding path program 83 times [2018-10-04 14:27:27,471 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:27:27,471 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:27:27,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:27:27,471 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:27:27,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:27:27,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:27:29,915 INFO L134 CoverageAnalysis]: Checked inductivity of 6972 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:27:29,915 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:27:29,915 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 [2018-10-04 14:27:29,923 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:27:37,044 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 84 check-sat command(s) [2018-10-04 14:27:37,044 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:27:37,049 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:27:37,343 INFO L134 CoverageAnalysis]: Checked inductivity of 6972 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:27:37,367 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:27:37,367 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2018-10-04 14:27:37,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-10-04 14:27:37,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-10-04 14:27:37,368 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:27:37,369 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 86 states. [2018-10-04 14:27:37,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:27:37,596 INFO L93 Difference]: Finished difference Result 175 states and 175 transitions. [2018-10-04 14:27:37,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-10-04 14:27:37,597 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 170 [2018-10-04 14:27:37,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:27:37,597 INFO L225 Difference]: With dead ends: 175 [2018-10-04 14:27:37,598 INFO L226 Difference]: Without dead ends: 173 [2018-10-04 14:27:37,598 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 84 [2018-10-04 14:27:37,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-10-04 14:27:37,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-10-04 14:27:37,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-10-04 14:27:37,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 173 transitions. [2018-10-04 14:27:37,601 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 173 transitions. Word has length 170 [2018-10-04 14:27:37,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:27:37,601 INFO L480 AbstractCegarLoop]: Abstraction has 173 states and 173 transitions. [2018-10-04 14:27:37,601 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-10-04 14:27:37,601 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 173 transitions. [2018-10-04 14:27:37,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-10-04 14:27:37,602 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:27:37,602 INFO L375 BasicCegarLoop]: trace histogram [85, 84, 1, 1, 1] [2018-10-04 14:27:37,602 INFO L423 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:27:37,602 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:27:37,603 INFO L82 PathProgramCache]: Analyzing trace with hash 571719119, now seen corresponding path program 84 times [2018-10-04 14:27:37,603 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:27:37,603 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:27:37,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:27:37,603 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:27:37,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:27:37,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:27:38,879 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:27:38,880 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:27:38,880 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:27:38,889 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:27:40,511 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 85 check-sat command(s) [2018-10-04 14:27:40,511 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:27:40,517 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:27:40,798 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:27:40,821 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:27:40,822 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 86 [2018-10-04 14:27:40,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-10-04 14:27:40,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-10-04 14:27:40,823 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:27:40,823 INFO L87 Difference]: Start difference. First operand 173 states and 173 transitions. Second operand 87 states. [2018-10-04 14:27:41,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:27:41,193 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-10-04 14:27:41,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-10-04 14:27:41,194 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 172 [2018-10-04 14:27:41,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:27:41,195 INFO L225 Difference]: With dead ends: 177 [2018-10-04 14:27:41,195 INFO L226 Difference]: Without dead ends: 175 [2018-10-04 14:27:41,195 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.0s impTime 85 [2018-10-04 14:27:41,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-10-04 14:27:41,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-10-04 14:27:41,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-10-04 14:27:41,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 175 transitions. [2018-10-04 14:27:41,198 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 175 transitions. Word has length 172 [2018-10-04 14:27:41,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:27:41,199 INFO L480 AbstractCegarLoop]: Abstraction has 175 states and 175 transitions. [2018-10-04 14:27:41,199 INFO L481 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-10-04 14:27:41,199 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 175 transitions. [2018-10-04 14:27:41,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-10-04 14:27:41,200 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:27:41,200 INFO L375 BasicCegarLoop]: trace histogram [86, 85, 1, 1, 1] [2018-10-04 14:27:41,203 INFO L423 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:27:41,203 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:27:41,203 INFO L82 PathProgramCache]: Analyzing trace with hash -333688439, now seen corresponding path program 85 times [2018-10-04 14:27:41,203 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:27:41,203 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:27:41,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:27:41,204 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:27:41,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:27:41,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:27:42,271 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:27:42,272 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:27:42,272 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:27:42,279 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:27:42,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:27:42,342 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:27:42,655 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:27:42,675 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:27:42,675 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2018-10-04 14:27:42,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-04 14:27:42,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-04 14:27:42,677 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:27:42,677 INFO L87 Difference]: Start difference. First operand 175 states and 175 transitions. Second operand 88 states. [2018-10-04 14:27:42,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:27:42,869 INFO L93 Difference]: Finished difference Result 179 states and 179 transitions. [2018-10-04 14:27:42,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-10-04 14:27:42,869 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 174 [2018-10-04 14:27:42,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:27:42,870 INFO L225 Difference]: With dead ends: 179 [2018-10-04 14:27:42,870 INFO L226 Difference]: Without dead ends: 177 [2018-10-04 14:27:42,870 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.8s impTime 86 [2018-10-04 14:27:42,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-10-04 14:27:42,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-10-04 14:27:42,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-10-04 14:27:42,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 177 transitions. [2018-10-04 14:27:42,874 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 177 transitions. Word has length 174 [2018-10-04 14:27:42,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:27:42,874 INFO L480 AbstractCegarLoop]: Abstraction has 177 states and 177 transitions. [2018-10-04 14:27:42,874 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-10-04 14:27:42,875 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 177 transitions. [2018-10-04 14:27:42,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-10-04 14:27:42,875 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:27:42,875 INFO L375 BasicCegarLoop]: trace histogram [87, 86, 1, 1, 1] [2018-10-04 14:27:42,876 INFO L423 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:27:42,876 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:27:42,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1448009411, now seen corresponding path program 86 times [2018-10-04 14:27:42,876 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:27:42,876 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:27:42,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:27:42,876 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:27:42,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:27:42,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:27:44,465 INFO L134 CoverageAnalysis]: Checked inductivity of 7482 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:27:44,465 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:27:44,465 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:27:44,473 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:27:44,535 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:27:44,535 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:27:44,538 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:27:44,937 INFO L134 CoverageAnalysis]: Checked inductivity of 7482 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:27:44,957 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:27:44,958 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 88 [2018-10-04 14:27:44,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-10-04 14:27:44,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-10-04 14:27:44,959 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:27:44,959 INFO L87 Difference]: Start difference. First operand 177 states and 177 transitions. Second operand 89 states. [2018-10-04 14:27:45,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:27:45,268 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2018-10-04 14:27:45,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-04 14:27:45,268 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 176 [2018-10-04 14:27:45,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:27:45,269 INFO L225 Difference]: With dead ends: 181 [2018-10-04 14:27:45,269 INFO L226 Difference]: Without dead ends: 179 [2018-10-04 14:27:45,270 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.3s impTime 87 [2018-10-04 14:27:45,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-10-04 14:27:45,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-10-04 14:27:45,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-10-04 14:27:45,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2018-10-04 14:27:45,272 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 176 [2018-10-04 14:27:45,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:27:45,273 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2018-10-04 14:27:45,273 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-10-04 14:27:45,273 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2018-10-04 14:27:45,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-04 14:27:45,273 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:27:45,273 INFO L375 BasicCegarLoop]: trace histogram [88, 87, 1, 1, 1] [2018-10-04 14:27:45,274 INFO L423 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:27:45,274 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:27:45,274 INFO L82 PathProgramCache]: Analyzing trace with hash -32307843, now seen corresponding path program 87 times [2018-10-04 14:27:45,274 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:27:45,274 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:27:45,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:27:45,275 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:27:45,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:27:45,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:27:47,022 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:27:47,022 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:27:47,022 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 [2018-10-04 14:27:47,030 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:27:49,620 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 88 check-sat command(s) [2018-10-04 14:27:49,620 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:27:49,626 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:27:50,039 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:27:50,063 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:27:50,064 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2018-10-04 14:27:50,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-10-04 14:27:50,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-10-04 14:27:50,065 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:27:50,065 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand 90 states. [2018-10-04 14:27:50,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:27:50,323 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2018-10-04 14:27:50,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-10-04 14:27:50,324 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 178 [2018-10-04 14:27:50,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:27:50,325 INFO L225 Difference]: With dead ends: 183 [2018-10-04 14:27:50,325 INFO L226 Difference]: Without dead ends: 181 [2018-10-04 14:27:50,326 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.5s impTime 88 [2018-10-04 14:27:50,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-10-04 14:27:50,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-10-04 14:27:50,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-10-04 14:27:50,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 181 transitions. [2018-10-04 14:27:50,330 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 181 transitions. Word has length 178 [2018-10-04 14:27:50,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:27:50,330 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 181 transitions. [2018-10-04 14:27:50,330 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-10-04 14:27:50,331 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 181 transitions. [2018-10-04 14:27:50,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-10-04 14:27:50,331 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:27:50,331 INFO L375 BasicCegarLoop]: trace histogram [89, 88, 1, 1, 1] [2018-10-04 14:27:50,331 INFO L423 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:27:50,332 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:27:50,332 INFO L82 PathProgramCache]: Analyzing trace with hash -983013961, now seen corresponding path program 88 times [2018-10-04 14:27:50,332 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:27:50,332 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:27:50,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:27:50,333 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:27:50,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:27:50,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:27:51,881 INFO L134 CoverageAnalysis]: Checked inductivity of 7832 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:27:51,881 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:27:51,881 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:27:51,889 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:27:51,954 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:27:51,954 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:27:51,958 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:27:52,268 INFO L134 CoverageAnalysis]: Checked inductivity of 7832 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:27:52,288 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:27:52,288 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 90 [2018-10-04 14:27:52,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-10-04 14:27:52,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-10-04 14:27:52,289 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:27:52,289 INFO L87 Difference]: Start difference. First operand 181 states and 181 transitions. Second operand 91 states. [2018-10-04 14:27:52,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:27:52,582 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2018-10-04 14:27:52,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-10-04 14:27:52,582 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 180 [2018-10-04 14:27:52,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:27:52,583 INFO L225 Difference]: With dead ends: 185 [2018-10-04 14:27:52,583 INFO L226 Difference]: Without dead ends: 183 [2018-10-04 14:27:52,584 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 89 [2018-10-04 14:27:52,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-10-04 14:27:52,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-10-04 14:27:52,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-10-04 14:27:52,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 183 transitions. [2018-10-04 14:27:52,586 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 183 transitions. Word has length 180 [2018-10-04 14:27:52,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:27:52,586 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 183 transitions. [2018-10-04 14:27:52,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-10-04 14:27:52,587 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 183 transitions. [2018-10-04 14:27:52,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-10-04 14:27:52,587 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:27:52,587 INFO L375 BasicCegarLoop]: trace histogram [90, 89, 1, 1, 1] [2018-10-04 14:27:52,588 INFO L423 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:27:52,588 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:27:52,588 INFO L82 PathProgramCache]: Analyzing trace with hash 216440689, now seen corresponding path program 89 times [2018-10-04 14:27:52,588 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:27:52,588 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:27:52,588 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:27:52,588 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:27:52,588 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:27:52,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:27:53,750 INFO L134 CoverageAnalysis]: Checked inductivity of 8010 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:27:53,750 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:27:53,750 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:27:53,759 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:28:03,793 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 90 check-sat command(s) [2018-10-04 14:28:03,793 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:28:03,800 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:28:04,112 INFO L134 CoverageAnalysis]: Checked inductivity of 8010 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:04,138 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:28:04,138 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2018-10-04 14:28:04,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-10-04 14:28:04,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-10-04 14:28:04,139 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:28:04,139 INFO L87 Difference]: Start difference. First operand 183 states and 183 transitions. Second operand 92 states. [2018-10-04 14:28:04,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:28:04,335 INFO L93 Difference]: Finished difference Result 187 states and 187 transitions. [2018-10-04 14:28:04,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-10-04 14:28:04,335 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 182 [2018-10-04 14:28:04,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:28:04,336 INFO L225 Difference]: With dead ends: 187 [2018-10-04 14:28:04,336 INFO L226 Difference]: Without dead ends: 185 [2018-10-04 14:28:04,336 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 90 [2018-10-04 14:28:04,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-10-04 14:28:04,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-10-04 14:28:04,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-10-04 14:28:04,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2018-10-04 14:28:04,339 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 182 [2018-10-04 14:28:04,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:28:04,340 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2018-10-04 14:28:04,340 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-10-04 14:28:04,340 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2018-10-04 14:28:04,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-10-04 14:28:04,340 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:28:04,341 INFO L375 BasicCegarLoop]: trace histogram [91, 90, 1, 1, 1] [2018-10-04 14:28:04,341 INFO L423 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:28:04,341 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:28:04,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1841124011, now seen corresponding path program 90 times [2018-10-04 14:28:04,341 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:28:04,341 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:28:04,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:04,342 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:28:04,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:04,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:28:06,010 INFO L134 CoverageAnalysis]: Checked inductivity of 8190 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:06,010 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:28:06,010 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 [2018-10-04 14:28:06,019 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:28:08,169 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 91 check-sat command(s) [2018-10-04 14:28:08,169 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:28:08,175 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:28:08,490 INFO L134 CoverageAnalysis]: Checked inductivity of 8190 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:08,512 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:28:08,513 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 92 [2018-10-04 14:28:08,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-10-04 14:28:08,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-10-04 14:28:08,514 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:28:08,514 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand 93 states. [2018-10-04 14:28:08,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:28:08,751 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2018-10-04 14:28:08,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-10-04 14:28:08,751 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 184 [2018-10-04 14:28:08,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:28:08,752 INFO L225 Difference]: With dead ends: 189 [2018-10-04 14:28:08,752 INFO L226 Difference]: Without dead ends: 187 [2018-10-04 14:28:08,753 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.3s impTime 91 [2018-10-04 14:28:08,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-10-04 14:28:08,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-10-04 14:28:08,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-10-04 14:28:08,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2018-10-04 14:28:08,756 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 184 [2018-10-04 14:28:08,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:28:08,757 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2018-10-04 14:28:08,757 INFO L481 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-10-04 14:28:08,757 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2018-10-04 14:28:08,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-04 14:28:08,758 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:28:08,758 INFO L375 BasicCegarLoop]: trace histogram [92, 91, 1, 1, 1] [2018-10-04 14:28:08,758 INFO L423 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:28:08,758 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:28:08,759 INFO L82 PathProgramCache]: Analyzing trace with hash -206299291, now seen corresponding path program 91 times [2018-10-04 14:28:08,759 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:28:08,759 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:28:08,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:08,759 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:28:08,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:08,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:28:10,381 INFO L134 CoverageAnalysis]: Checked inductivity of 8372 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:10,381 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:28:10,381 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:28:10,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:28:10,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:28:10,462 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:28:10,772 INFO L134 CoverageAnalysis]: Checked inductivity of 8372 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:10,792 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:28:10,792 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2018-10-04 14:28:10,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-10-04 14:28:10,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-10-04 14:28:10,793 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:28:10,793 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand 94 states. [2018-10-04 14:28:11,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:28:11,043 INFO L93 Difference]: Finished difference Result 191 states and 191 transitions. [2018-10-04 14:28:11,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-04 14:28:11,043 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 186 [2018-10-04 14:28:11,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:28:11,044 INFO L225 Difference]: With dead ends: 191 [2018-10-04 14:28:11,044 INFO L226 Difference]: Without dead ends: 189 [2018-10-04 14:28:11,044 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.3s impTime 92 [2018-10-04 14:28:11,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-10-04 14:28:11,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-10-04 14:28:11,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-10-04 14:28:11,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 189 transitions. [2018-10-04 14:28:11,048 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 189 transitions. Word has length 186 [2018-10-04 14:28:11,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:28:11,049 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 189 transitions. [2018-10-04 14:28:11,049 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-10-04 14:28:11,049 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 189 transitions. [2018-10-04 14:28:11,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-10-04 14:28:11,050 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:28:11,050 INFO L375 BasicCegarLoop]: trace histogram [93, 92, 1, 1, 1] [2018-10-04 14:28:11,050 INFO L423 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:28:11,050 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:28:11,050 INFO L82 PathProgramCache]: Analyzing trace with hash -685070945, now seen corresponding path program 92 times [2018-10-04 14:28:11,051 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:28:11,051 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:28:11,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:11,051 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:28:11,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:11,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:28:12,348 INFO L134 CoverageAnalysis]: Checked inductivity of 8556 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:12,348 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:28:12,348 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:28:12,355 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:28:12,419 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:28:12,419 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:28:12,423 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:28:12,784 INFO L134 CoverageAnalysis]: Checked inductivity of 8556 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:12,803 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:28:12,804 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 94 [2018-10-04 14:28:12,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-10-04 14:28:12,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-10-04 14:28:12,805 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:28:12,805 INFO L87 Difference]: Start difference. First operand 189 states and 189 transitions. Second operand 95 states. [2018-10-04 14:28:13,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:28:13,006 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2018-10-04 14:28:13,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-10-04 14:28:13,007 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 188 [2018-10-04 14:28:13,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:28:13,007 INFO L225 Difference]: With dead ends: 193 [2018-10-04 14:28:13,007 INFO L226 Difference]: Without dead ends: 191 [2018-10-04 14:28:13,008 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.0s impTime 93 [2018-10-04 14:28:13,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-10-04 14:28:13,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-10-04 14:28:13,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-10-04 14:28:13,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 191 transitions. [2018-10-04 14:28:13,011 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 191 transitions. Word has length 188 [2018-10-04 14:28:13,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:28:13,011 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 191 transitions. [2018-10-04 14:28:13,011 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-10-04 14:28:13,011 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 191 transitions. [2018-10-04 14:28:13,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-10-04 14:28:13,012 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:28:13,012 INFO L375 BasicCegarLoop]: trace histogram [94, 93, 1, 1, 1] [2018-10-04 14:28:13,012 INFO L423 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:28:13,013 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:28:13,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1223129767, now seen corresponding path program 93 times [2018-10-04 14:28:13,013 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:28:13,013 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:28:13,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:13,014 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:28:13,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:13,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:28:14,642 INFO L134 CoverageAnalysis]: Checked inductivity of 8742 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:14,643 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:28:14,643 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 [2018-10-04 14:28:14,650 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:28:17,950 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 94 check-sat command(s) [2018-10-04 14:28:17,950 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:28:17,957 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:28:18,295 INFO L134 CoverageAnalysis]: Checked inductivity of 8742 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:18,318 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:28:18,318 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2018-10-04 14:28:18,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-10-04 14:28:18,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-10-04 14:28:18,319 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:28:18,319 INFO L87 Difference]: Start difference. First operand 191 states and 191 transitions. Second operand 96 states. [2018-10-04 14:28:18,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:28:18,628 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-10-04 14:28:18,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-10-04 14:28:18,628 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 190 [2018-10-04 14:28:18,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:28:18,629 INFO L225 Difference]: With dead ends: 195 [2018-10-04 14:28:18,629 INFO L226 Difference]: Without dead ends: 193 [2018-10-04 14:28:18,629 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.3s impTime 94 [2018-10-04 14:28:18,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-10-04 14:28:18,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-10-04 14:28:18,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-10-04 14:28:18,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 193 transitions. [2018-10-04 14:28:18,632 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 193 transitions. Word has length 190 [2018-10-04 14:28:18,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:28:18,633 INFO L480 AbstractCegarLoop]: Abstraction has 193 states and 193 transitions. [2018-10-04 14:28:18,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-10-04 14:28:18,633 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 193 transitions. [2018-10-04 14:28:18,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-04 14:28:18,633 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:28:18,633 INFO L375 BasicCegarLoop]: trace histogram [95, 94, 1, 1, 1] [2018-10-04 14:28:18,634 INFO L423 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:28:18,634 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:28:18,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1393385107, now seen corresponding path program 94 times [2018-10-04 14:28:18,634 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:28:18,634 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:28:18,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:18,634 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:28:18,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:18,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:28:20,905 INFO L134 CoverageAnalysis]: Checked inductivity of 8930 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:20,905 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:28:20,905 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 [2018-10-04 14:28:20,913 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:28:20,980 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:28:20,980 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:28:20,984 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:28:21,324 INFO L134 CoverageAnalysis]: Checked inductivity of 8930 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:21,344 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:28:21,344 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 96 [2018-10-04 14:28:21,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-10-04 14:28:21,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-10-04 14:28:21,345 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:28:21,346 INFO L87 Difference]: Start difference. First operand 193 states and 193 transitions. Second operand 97 states. [2018-10-04 14:28:21,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:28:21,649 INFO L93 Difference]: Finished difference Result 197 states and 197 transitions. [2018-10-04 14:28:21,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-10-04 14:28:21,649 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 192 [2018-10-04 14:28:21,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:28:21,650 INFO L225 Difference]: With dead ends: 197 [2018-10-04 14:28:21,650 INFO L226 Difference]: Without dead ends: 195 [2018-10-04 14:28:21,651 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 2.0s impTime 95 [2018-10-04 14:28:21,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-10-04 14:28:21,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-10-04 14:28:21,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-10-04 14:28:21,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 195 transitions. [2018-10-04 14:28:21,653 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 195 transitions. Word has length 192 [2018-10-04 14:28:21,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:28:21,654 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 195 transitions. [2018-10-04 14:28:21,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-10-04 14:28:21,654 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 195 transitions. [2018-10-04 14:28:21,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-10-04 14:28:21,654 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:28:21,654 INFO L375 BasicCegarLoop]: trace histogram [96, 95, 1, 1, 1] [2018-10-04 14:28:21,655 INFO L423 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:28:21,655 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:28:21,655 INFO L82 PathProgramCache]: Analyzing trace with hash -986656435, now seen corresponding path program 95 times [2018-10-04 14:28:21,655 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:28:21,655 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:28:21,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:21,656 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:28:21,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:21,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:28:23,198 INFO L134 CoverageAnalysis]: Checked inductivity of 9120 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:23,198 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:28:23,198 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:28:23,206 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:28:35,740 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 96 check-sat command(s) [2018-10-04 14:28:35,740 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:28:35,746 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:28:36,148 INFO L134 CoverageAnalysis]: Checked inductivity of 9120 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:36,173 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:28:36,174 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2018-10-04 14:28:36,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-10-04 14:28:36,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-10-04 14:28:36,175 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:28:36,175 INFO L87 Difference]: Start difference. First operand 195 states and 195 transitions. Second operand 98 states. [2018-10-04 14:28:36,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:28:36,485 INFO L93 Difference]: Finished difference Result 199 states and 199 transitions. [2018-10-04 14:28:36,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-10-04 14:28:36,485 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 194 [2018-10-04 14:28:36,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:28:36,486 INFO L225 Difference]: With dead ends: 199 [2018-10-04 14:28:36,486 INFO L226 Difference]: Without dead ends: 197 [2018-10-04 14:28:36,486 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.2s impTime 96 [2018-10-04 14:28:36,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-10-04 14:28:36,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-10-04 14:28:36,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-10-04 14:28:36,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 197 transitions. [2018-10-04 14:28:36,490 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 197 transitions. Word has length 194 [2018-10-04 14:28:36,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:28:36,490 INFO L480 AbstractCegarLoop]: Abstraction has 197 states and 197 transitions. [2018-10-04 14:28:36,490 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-10-04 14:28:36,491 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 197 transitions. [2018-10-04 14:28:36,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-10-04 14:28:36,491 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:28:36,492 INFO L375 BasicCegarLoop]: trace histogram [97, 96, 1, 1, 1] [2018-10-04 14:28:36,492 INFO L423 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:28:36,492 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:28:36,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1010990471, now seen corresponding path program 96 times [2018-10-04 14:28:36,492 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:28:36,492 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:28:36,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:36,493 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:28:36,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:36,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:28:37,961 INFO L134 CoverageAnalysis]: Checked inductivity of 9312 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:37,961 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:28:37,961 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:28:37,969 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:28:40,707 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 97 check-sat command(s) [2018-10-04 14:28:40,708 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:28:40,714 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:28:41,219 INFO L134 CoverageAnalysis]: Checked inductivity of 9312 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:41,243 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:28:41,244 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 98 [2018-10-04 14:28:41,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-10-04 14:28:41,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-10-04 14:28:41,245 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:28:41,245 INFO L87 Difference]: Start difference. First operand 197 states and 197 transitions. Second operand 99 states. [2018-10-04 14:28:41,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:28:41,482 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2018-10-04 14:28:41,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-10-04 14:28:41,483 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 196 [2018-10-04 14:28:41,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:28:41,484 INFO L225 Difference]: With dead ends: 201 [2018-10-04 14:28:41,484 INFO L226 Difference]: Without dead ends: 199 [2018-10-04 14:28:41,484 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.1s impTime 97 [2018-10-04 14:28:41,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-10-04 14:28:41,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-10-04 14:28:41,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-10-04 14:28:41,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 199 transitions. [2018-10-04 14:28:41,488 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 199 transitions. Word has length 196 [2018-10-04 14:28:41,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:28:41,488 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 199 transitions. [2018-10-04 14:28:41,488 INFO L481 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-10-04 14:28:41,488 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 199 transitions. [2018-10-04 14:28:41,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-04 14:28:41,489 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:28:41,489 INFO L375 BasicCegarLoop]: trace histogram [98, 97, 1, 1, 1] [2018-10-04 14:28:41,490 INFO L423 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:28:41,490 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:28:41,490 INFO L82 PathProgramCache]: Analyzing trace with hash 899285825, now seen corresponding path program 97 times [2018-10-04 14:28:41,490 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:28:41,490 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:28:41,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:41,491 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:28:41,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:41,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:28:43,157 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:43,157 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:28:43,157 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:28:43,165 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:28:43,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:28:43,235 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:28:43,594 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:43,614 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:28:43,615 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2018-10-04 14:28:43,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-10-04 14:28:43,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-10-04 14:28:43,616 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:28:43,616 INFO L87 Difference]: Start difference. First operand 199 states and 199 transitions. Second operand 100 states. [2018-10-04 14:28:43,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:28:43,891 INFO L93 Difference]: Finished difference Result 203 states and 203 transitions. [2018-10-04 14:28:43,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-10-04 14:28:43,891 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 198 [2018-10-04 14:28:43,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:28:43,892 INFO L225 Difference]: With dead ends: 203 [2018-10-04 14:28:43,892 INFO L226 Difference]: Without dead ends: 201 [2018-10-04 14:28:43,892 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.3s impTime 98 [2018-10-04 14:28:43,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-10-04 14:28:43,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-10-04 14:28:43,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-10-04 14:28:43,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 201 transitions. [2018-10-04 14:28:43,896 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 201 transitions. Word has length 198 [2018-10-04 14:28:43,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:28:43,896 INFO L480 AbstractCegarLoop]: Abstraction has 201 states and 201 transitions. [2018-10-04 14:28:43,896 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-10-04 14:28:43,896 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 201 transitions. [2018-10-04 14:28:43,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-10-04 14:28:43,897 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:28:43,897 INFO L375 BasicCegarLoop]: trace histogram [99, 98, 1, 1, 1] [2018-10-04 14:28:43,897 INFO L423 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:28:43,897 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:28:43,897 INFO L82 PathProgramCache]: Analyzing trace with hash 925303419, now seen corresponding path program 98 times [2018-10-04 14:28:43,898 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:28:43,898 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:28:43,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:43,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:28:43,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:43,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:28:45,611 INFO L134 CoverageAnalysis]: Checked inductivity of 9702 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:45,611 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:28:45,611 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:28:45,618 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:28:45,686 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:28:45,686 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:28:45,690 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:28:46,314 INFO L134 CoverageAnalysis]: Checked inductivity of 9702 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:46,334 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:28:46,334 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 100 [2018-10-04 14:28:46,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-10-04 14:28:46,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-10-04 14:28:46,335 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:28:46,335 INFO L87 Difference]: Start difference. First operand 201 states and 201 transitions. Second operand 101 states. [2018-10-04 14:28:46,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:28:46,651 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2018-10-04 14:28:46,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-10-04 14:28:46,651 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 200 [2018-10-04 14:28:46,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:28:46,652 INFO L225 Difference]: With dead ends: 205 [2018-10-04 14:28:46,652 INFO L226 Difference]: Without dead ends: 203 [2018-10-04 14:28:46,652 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.4s impTime 99 [2018-10-04 14:28:46,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-10-04 14:28:46,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-10-04 14:28:46,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-10-04 14:28:46,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2018-10-04 14:28:46,655 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 200 [2018-10-04 14:28:46,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:28:46,655 INFO L480 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2018-10-04 14:28:46,656 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-10-04 14:28:46,656 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2018-10-04 14:28:46,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-10-04 14:28:46,656 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:28:46,656 INFO L375 BasicCegarLoop]: trace histogram [100, 99, 1, 1, 1] [2018-10-04 14:28:46,657 INFO L423 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:28:46,657 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:28:46,657 INFO L82 PathProgramCache]: Analyzing trace with hash 158407477, now seen corresponding path program 99 times [2018-10-04 14:28:46,657 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:28:46,657 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:28:46,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:46,658 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:28:46,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:46,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:28:48,191 INFO L134 CoverageAnalysis]: Checked inductivity of 9900 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:48,191 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:28:48,191 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:28:48,199 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:28:52,419 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 100 check-sat command(s) [2018-10-04 14:28:52,420 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:28:52,427 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:28:52,778 INFO L134 CoverageAnalysis]: Checked inductivity of 9900 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:52,802 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:28:52,802 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2018-10-04 14:28:52,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-10-04 14:28:52,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-10-04 14:28:52,803 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:28:52,804 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand 102 states. [2018-10-04 14:28:53,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:28:53,065 INFO L93 Difference]: Finished difference Result 207 states and 207 transitions. [2018-10-04 14:28:53,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-10-04 14:28:53,065 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 202 [2018-10-04 14:28:53,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:28:53,066 INFO L225 Difference]: With dead ends: 207 [2018-10-04 14:28:53,067 INFO L226 Difference]: Without dead ends: 205 [2018-10-04 14:28:53,067 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.2s impTime 100 [2018-10-04 14:28:53,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-10-04 14:28:53,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-10-04 14:28:53,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-10-04 14:28:53,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 205 transitions. [2018-10-04 14:28:53,070 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 205 transitions. Word has length 202 [2018-10-04 14:28:53,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:28:53,070 INFO L480 AbstractCegarLoop]: Abstraction has 205 states and 205 transitions. [2018-10-04 14:28:53,070 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-10-04 14:28:53,070 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 205 transitions. [2018-10-04 14:28:53,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-10-04 14:28:53,071 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:28:53,071 INFO L375 BasicCegarLoop]: trace histogram [101, 100, 1, 1, 1] [2018-10-04 14:28:53,071 INFO L423 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:28:53,071 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:28:53,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1905782127, now seen corresponding path program 100 times [2018-10-04 14:28:53,071 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:28:53,071 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:28:53,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:53,072 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:28:53,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:53,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:28:54,518 INFO L134 CoverageAnalysis]: Checked inductivity of 10100 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:54,518 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:28:54,518 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:28:54,526 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:28:54,595 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:28:54,596 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:28:54,599 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:28:54,979 INFO L134 CoverageAnalysis]: Checked inductivity of 10100 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:55,001 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:28:55,001 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 102 [2018-10-04 14:28:55,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-10-04 14:28:55,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-10-04 14:28:55,002 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:28:55,002 INFO L87 Difference]: Start difference. First operand 205 states and 205 transitions. Second operand 103 states. [2018-10-04 14:28:55,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:28:55,269 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2018-10-04 14:28:55,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-10-04 14:28:55,269 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 204 [2018-10-04 14:28:55,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:28:55,270 INFO L225 Difference]: With dead ends: 209 [2018-10-04 14:28:55,271 INFO L226 Difference]: Without dead ends: 207 [2018-10-04 14:28:55,271 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.1s impTime 101 [2018-10-04 14:28:55,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-10-04 14:28:55,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-10-04 14:28:55,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-10-04 14:28:55,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 207 transitions. [2018-10-04 14:28:55,275 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 207 transitions. Word has length 204 [2018-10-04 14:28:55,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:28:55,275 INFO L480 AbstractCegarLoop]: Abstraction has 207 states and 207 transitions. [2018-10-04 14:28:55,275 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-10-04 14:28:55,275 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 207 transitions. [2018-10-04 14:28:55,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-10-04 14:28:55,276 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:28:55,276 INFO L375 BasicCegarLoop]: trace histogram [102, 101, 1, 1, 1] [2018-10-04 14:28:55,282 INFO L423 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:28:55,282 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:28:55,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1800608041, now seen corresponding path program 101 times [2018-10-04 14:28:55,282 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:28:55,283 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:28:55,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:55,283 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:28:55,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:55,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:28:58,269 INFO L134 CoverageAnalysis]: Checked inductivity of 10302 backedges. 0 proven. 10302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:58,269 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:28:58,269 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:28:58,277 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown