java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/up.i_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 13:29:33,142 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 13:29:33,144 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 13:29:33,157 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 13:29:33,158 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 13:29:33,159 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 13:29:33,160 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 13:29:33,162 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 13:29:33,164 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 13:29:33,165 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 13:29:33,166 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 13:29:33,167 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 13:29:33,168 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 13:29:33,169 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 13:29:33,170 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 13:29:33,171 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 13:29:33,172 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 13:29:33,174 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 13:29:33,176 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 13:29:33,178 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 13:29:33,179 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 13:29:33,181 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 13:29:33,183 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 13:29:33,184 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 13:29:33,184 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 13:29:33,185 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 13:29:33,186 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 13:29:33,187 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 13:29:33,188 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 13:29:33,189 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 13:29:33,190 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 13:29:33,191 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-25 13:29:33,193 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-07-25 13:29:33,206 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 13:29:33,207 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 13:29:33,209 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 13:29:33,209 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 13:29:33,210 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 13:29:33,210 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-25 13:29:33,210 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 13:29:33,210 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 13:29:33,280 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 13:29:33,298 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 13:29:33,304 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 13:29:33,306 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 13:29:33,307 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 13:29:33,308 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/up.i_4.bpl [2018-07-25 13:29:33,308 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/up.i_4.bpl' [2018-07-25 13:29:33,380 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 13:29:33,382 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 13:29:33,383 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 13:29:33,383 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 13:29:33,383 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 13:29:33,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "up.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:29:33" (1/1) ... [2018-07-25 13:29:33,420 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "up.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:29:33" (1/1) ... [2018-07-25 13:29:33,429 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 13:29:33,430 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 13:29:33,430 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 13:29:33,430 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 13:29:33,443 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "up.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:29:33" (1/1) ... [2018-07-25 13:29:33,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "up.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:29:33" (1/1) ... [2018-07-25 13:29:33,445 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "up.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:29:33" (1/1) ... [2018-07-25 13:29:33,445 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "up.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:29:33" (1/1) ... [2018-07-25 13:29:33,449 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "up.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:29:33" (1/1) ... [2018-07-25 13:29:33,452 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "up.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:29:33" (1/1) ... [2018-07-25 13:29:33,453 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "up.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:29:33" (1/1) ... [2018-07-25 13:29:33,455 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 13:29:33,456 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 13:29:33,456 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 13:29:33,456 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 13:29:33,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "up.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:29:33" (1/1) ... [2018-07-25 13:29:33,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-25 13:29:33,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-25 13:29:33,725 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-25 13:29:33,726 INFO L202 PluginConnector]: Adding new model up.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 01:29:33 BoogieIcfgContainer [2018-07-25 13:29:33,726 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 13:29:33,727 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 13:29:33,727 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 13:29:33,731 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 13:29:33,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "up.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:29:33" (1/2) ... [2018-07-25 13:29:33,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f3ef425 and model type up.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 01:29:33, skipping insertion in model container [2018-07-25 13:29:33,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "up.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 01:29:33" (2/2) ... [2018-07-25 13:29:33,736 INFO L112 eAbstractionObserver]: Analyzing ICFG up.i_4.bpl [2018-07-25 13:29:33,746 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-25 13:29:33,754 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 13:29:33,800 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 13:29:33,801 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 13:29:33,802 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 13:29:33,802 INFO L376 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-25 13:29:33,802 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 13:29:33,802 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 13:29:33,803 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 13:29:33,803 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 13:29:33,803 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 13:29:33,820 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2018-07-25 13:29:33,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-25 13:29:33,829 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:33,830 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-25 13:29:33,831 INFO L415 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:33,837 INFO L82 PathProgramCache]: Analyzing trace with hash 889539593, now seen corresponding path program 1 times [2018-07-25 13:29:33,844 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:33,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:33,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:33,952 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 13:29:33,953 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-25 13:29:33,958 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 13:29:33,975 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 13:29:33,976 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 13:29:33,979 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 4 states. [2018-07-25 13:29:34,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:34,034 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2018-07-25 13:29:34,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 13:29:34,038 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-07-25 13:29:34,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:34,051 INFO L225 Difference]: With dead ends: 15 [2018-07-25 13:29:34,051 INFO L226 Difference]: Without dead ends: 9 [2018-07-25 13:29:34,056 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-07-25 13:29:34,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-07-25 13:29:34,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-07-25 13:29:34,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-25 13:29:34,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2018-07-25 13:29:34,101 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2018-07-25 13:29:34,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:34,102 INFO L472 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2018-07-25 13:29:34,102 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 13:29:34,104 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2018-07-25 13:29:34,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-25 13:29:34,104 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:34,105 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2018-07-25 13:29:34,105 INFO L415 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:34,105 INFO L82 PathProgramCache]: Analyzing trace with hash 198622019, now seen corresponding path program 1 times [2018-07-25 13:29:34,106 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:34,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:34,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:34,154 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 13:29:34,155 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-25 13:29:34,159 INFO L451 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-25 13:29:34,160 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-25 13:29:34,160 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-25 13:29:34,161 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 5 states. [2018-07-25 13:29:34,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:34,220 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2018-07-25 13:29:34,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 13:29:34,221 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2018-07-25 13:29:34,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:34,222 INFO L225 Difference]: With dead ends: 17 [2018-07-25 13:29:34,222 INFO L226 Difference]: Without dead ends: 15 [2018-07-25 13:29:34,223 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-07-25 13:29:34,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-07-25 13:29:34,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 11. [2018-07-25 13:29:34,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-07-25 13:29:34,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2018-07-25 13:29:34,228 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2018-07-25 13:29:34,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:34,229 INFO L472 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-07-25 13:29:34,229 INFO L473 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-25 13:29:34,229 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2018-07-25 13:29:34,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-25 13:29:34,229 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:34,230 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2018-07-25 13:29:34,230 INFO L415 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:34,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1897132479, now seen corresponding path program 1 times [2018-07-25 13:29:34,231 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:34,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:34,282 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:34,282 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:34,283 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 13:29:34,283 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 13:29:34,283 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 13:29:34,284 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-25 13:29:34,284 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 6 states. [2018-07-25 13:29:34,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:34,334 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2018-07-25 13:29:34,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 13:29:34,334 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2018-07-25 13:29:34,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:34,335 INFO L225 Difference]: With dead ends: 20 [2018-07-25 13:29:34,336 INFO L226 Difference]: Without dead ends: 13 [2018-07-25 13:29:34,336 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-07-25 13:29:34,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-07-25 13:29:34,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-07-25 13:29:34,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-07-25 13:29:34,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-07-25 13:29:34,341 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2018-07-25 13:29:34,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:34,342 INFO L472 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-07-25 13:29:34,342 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 13:29:34,342 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2018-07-25 13:29:34,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-25 13:29:34,343 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:34,343 INFO L354 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2018-07-25 13:29:34,343 INFO L415 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:34,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1765329927, now seen corresponding path program 2 times [2018-07-25 13:29:34,344 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:34,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:34,407 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:34,407 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:34,407 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 13:29:34,408 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 13:29:34,408 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 13:29:34,408 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-07-25 13:29:34,409 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 7 states. [2018-07-25 13:29:34,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:34,483 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2018-07-25 13:29:34,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-25 13:29:34,483 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2018-07-25 13:29:34,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:34,484 INFO L225 Difference]: With dead ends: 21 [2018-07-25 13:29:34,484 INFO L226 Difference]: Without dead ends: 19 [2018-07-25 13:29:34,485 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2018-07-25 13:29:34,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-07-25 13:29:34,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15. [2018-07-25 13:29:34,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-07-25 13:29:34,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-07-25 13:29:34,495 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2018-07-25 13:29:34,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:34,496 INFO L472 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2018-07-25 13:29:34,496 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 13:29:34,496 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2018-07-25 13:29:34,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-25 13:29:34,497 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:34,497 INFO L354 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1] [2018-07-25 13:29:34,499 INFO L415 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:34,500 INFO L82 PathProgramCache]: Analyzing trace with hash 29955317, now seen corresponding path program 3 times [2018-07-25 13:29:34,500 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:34,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:34,550 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:34,550 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:34,550 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 13:29:34,551 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 13:29:34,553 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 13:29:34,554 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-25 13:29:34,554 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 8 states. [2018-07-25 13:29:34,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:34,605 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2018-07-25 13:29:34,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-25 13:29:34,605 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-07-25 13:29:34,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:34,606 INFO L225 Difference]: With dead ends: 26 [2018-07-25 13:29:34,606 INFO L226 Difference]: Without dead ends: 17 [2018-07-25 13:29:34,607 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2018-07-25 13:29:34,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-07-25 13:29:34,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-07-25 13:29:34,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-07-25 13:29:34,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-07-25 13:29:34,616 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 14 [2018-07-25 13:29:34,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:34,619 INFO L472 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-07-25 13:29:34,619 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 13:29:34,620 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2018-07-25 13:29:34,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-25 13:29:34,620 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:34,621 INFO L354 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1] [2018-07-25 13:29:34,621 INFO L415 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:34,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1153652177, now seen corresponding path program 4 times [2018-07-25 13:29:34,625 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:34,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:34,692 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:34,692 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:34,692 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 13:29:34,693 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 13:29:34,695 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 13:29:34,695 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-07-25 13:29:34,696 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 8 states. [2018-07-25 13:29:34,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:34,809 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2018-07-25 13:29:34,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 13:29:34,810 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2018-07-25 13:29:34,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:34,810 INFO L225 Difference]: With dead ends: 25 [2018-07-25 13:29:34,811 INFO L226 Difference]: Without dead ends: 23 [2018-07-25 13:29:34,811 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2018-07-25 13:29:34,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-07-25 13:29:34,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2018-07-25 13:29:34,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-07-25 13:29:34,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-07-25 13:29:34,820 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 16 [2018-07-25 13:29:34,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:34,824 INFO L472 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2018-07-25 13:29:34,824 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 13:29:34,825 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2018-07-25 13:29:34,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 13:29:34,826 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:34,826 INFO L354 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1] [2018-07-25 13:29:34,826 INFO L415 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:34,827 INFO L82 PathProgramCache]: Analyzing trace with hash -558246485, now seen corresponding path program 5 times [2018-07-25 13:29:34,827 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:34,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:34,915 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:34,915 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:34,915 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 13:29:34,916 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 13:29:34,916 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 13:29:34,916 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-07-25 13:29:34,917 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 10 states. [2018-07-25 13:29:35,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:35,012 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2018-07-25 13:29:35,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-25 13:29:35,012 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2018-07-25 13:29:35,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:35,013 INFO L225 Difference]: With dead ends: 32 [2018-07-25 13:29:35,013 INFO L226 Difference]: Without dead ends: 21 [2018-07-25 13:29:35,014 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2018-07-25 13:29:35,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-07-25 13:29:35,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-07-25 13:29:35,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-07-25 13:29:35,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-07-25 13:29:35,020 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 18 [2018-07-25 13:29:35,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:35,021 INFO L472 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2018-07-25 13:29:35,021 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 13:29:35,021 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2018-07-25 13:29:35,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-25 13:29:35,022 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:35,022 INFO L354 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 1, 1, 1, 1] [2018-07-25 13:29:35,023 INFO L415 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:35,023 INFO L82 PathProgramCache]: Analyzing trace with hash -578011675, now seen corresponding path program 6 times [2018-07-25 13:29:35,023 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:35,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:35,062 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:35,063 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:35,063 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 13:29:35,063 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 13:29:35,064 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 13:29:35,064 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-07-25 13:29:35,065 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 9 states. [2018-07-25 13:29:35,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:35,138 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2018-07-25 13:29:35,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 13:29:35,138 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2018-07-25 13:29:35,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:35,139 INFO L225 Difference]: With dead ends: 29 [2018-07-25 13:29:35,140 INFO L226 Difference]: Without dead ends: 27 [2018-07-25 13:29:35,140 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2018-07-25 13:29:35,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-07-25 13:29:35,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2018-07-25 13:29:35,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-07-25 13:29:35,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-07-25 13:29:35,152 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 20 [2018-07-25 13:29:35,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:35,153 INFO L472 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2018-07-25 13:29:35,153 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 13:29:35,153 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2018-07-25 13:29:35,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-25 13:29:35,154 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:35,154 INFO L354 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1] [2018-07-25 13:29:35,155 INFO L415 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:35,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1418505247, now seen corresponding path program 7 times [2018-07-25 13:29:35,155 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:35,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:35,210 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 20 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:35,211 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:35,215 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 13:29:35,216 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 13:29:35,216 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 13:29:35,217 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-07-25 13:29:35,218 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 12 states. [2018-07-25 13:29:35,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:35,282 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2018-07-25 13:29:35,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-25 13:29:35,282 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2018-07-25 13:29:35,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:35,283 INFO L225 Difference]: With dead ends: 38 [2018-07-25 13:29:35,284 INFO L226 Difference]: Without dead ends: 25 [2018-07-25 13:29:35,290 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2018-07-25 13:29:35,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-07-25 13:29:35,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-07-25 13:29:35,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-07-25 13:29:35,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-07-25 13:29:35,298 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 22 [2018-07-25 13:29:35,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:35,302 INFO L472 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2018-07-25 13:29:35,302 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 13:29:35,303 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2018-07-25 13:29:35,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-25 13:29:35,303 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:35,304 INFO L354 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 1, 1, 1, 1] [2018-07-25 13:29:35,304 INFO L415 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:35,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1375531237, now seen corresponding path program 8 times [2018-07-25 13:29:35,305 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:35,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:35,361 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:35,362 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:35,362 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 13:29:35,363 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 13:29:35,364 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 13:29:35,364 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2018-07-25 13:29:35,365 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 10 states. [2018-07-25 13:29:35,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:35,425 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2018-07-25 13:29:35,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-25 13:29:35,426 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2018-07-25 13:29:35,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:35,427 INFO L225 Difference]: With dead ends: 33 [2018-07-25 13:29:35,427 INFO L226 Difference]: Without dead ends: 31 [2018-07-25 13:29:35,427 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2018-07-25 13:29:35,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-07-25 13:29:35,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27. [2018-07-25 13:29:35,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-07-25 13:29:35,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-07-25 13:29:35,435 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 24 [2018-07-25 13:29:35,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:35,435 INFO L472 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2018-07-25 13:29:35,436 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 13:29:35,436 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2018-07-25 13:29:35,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-25 13:29:35,437 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:35,437 INFO L354 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1] [2018-07-25 13:29:35,437 INFO L415 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:35,437 INFO L82 PathProgramCache]: Analyzing trace with hash 964341655, now seen corresponding path program 9 times [2018-07-25 13:29:35,438 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:35,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:35,489 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 30 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:35,489 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:35,490 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-07-25 13:29:35,490 INFO L451 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-25 13:29:35,490 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-25 13:29:35,491 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2018-07-25 13:29:35,491 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 14 states. [2018-07-25 13:29:35,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:35,562 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2018-07-25 13:29:35,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-25 13:29:35,562 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 26 [2018-07-25 13:29:35,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:35,563 INFO L225 Difference]: With dead ends: 44 [2018-07-25 13:29:35,564 INFO L226 Difference]: Without dead ends: 29 [2018-07-25 13:29:35,564 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2018-07-25 13:29:35,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-07-25 13:29:35,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-07-25 13:29:35,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-07-25 13:29:35,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2018-07-25 13:29:35,572 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 26 [2018-07-25 13:29:35,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:35,572 INFO L472 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2018-07-25 13:29:35,572 INFO L473 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-25 13:29:35,573 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2018-07-25 13:29:35,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-07-25 13:29:35,574 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:35,574 INFO L354 BasicCegarLoop]: trace histogram [7, 6, 6, 5, 1, 1, 1, 1] [2018-07-25 13:29:35,574 INFO L415 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:35,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1427751471, now seen corresponding path program 10 times [2018-07-25 13:29:35,575 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:35,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:35,620 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 42 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:35,620 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:35,621 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 13:29:35,621 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 13:29:35,621 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 13:29:35,622 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2018-07-25 13:29:35,622 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 11 states. [2018-07-25 13:29:35,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:35,695 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2018-07-25 13:29:35,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-25 13:29:35,697 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2018-07-25 13:29:35,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:35,698 INFO L225 Difference]: With dead ends: 37 [2018-07-25 13:29:35,698 INFO L226 Difference]: Without dead ends: 35 [2018-07-25 13:29:35,699 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=118, Invalid=188, Unknown=0, NotChecked=0, Total=306 [2018-07-25 13:29:35,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-07-25 13:29:35,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2018-07-25 13:29:35,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-07-25 13:29:35,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2018-07-25 13:29:35,714 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 28 [2018-07-25 13:29:35,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:35,715 INFO L472 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2018-07-25 13:29:35,715 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 13:29:35,715 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2018-07-25 13:29:35,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-07-25 13:29:35,716 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:35,716 INFO L354 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1] [2018-07-25 13:29:35,719 INFO L415 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:35,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1974662963, now seen corresponding path program 11 times [2018-07-25 13:29:35,720 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:35,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:35,787 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 42 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:35,787 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:35,788 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-25 13:29:35,788 INFO L451 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-25 13:29:35,789 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-25 13:29:35,789 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2018-07-25 13:29:35,790 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 16 states. [2018-07-25 13:29:35,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:35,878 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2018-07-25 13:29:35,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 13:29:35,879 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 30 [2018-07-25 13:29:35,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:35,882 INFO L225 Difference]: With dead ends: 50 [2018-07-25 13:29:35,883 INFO L226 Difference]: Without dead ends: 33 [2018-07-25 13:29:35,884 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2018-07-25 13:29:35,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-07-25 13:29:35,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-07-25 13:29:35,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-07-25 13:29:35,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2018-07-25 13:29:35,892 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 30 [2018-07-25 13:29:35,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:35,892 INFO L472 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2018-07-25 13:29:35,892 INFO L473 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-25 13:29:35,893 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2018-07-25 13:29:35,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-07-25 13:29:35,894 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:35,894 INFO L354 BasicCegarLoop]: trace histogram [8, 7, 7, 6, 1, 1, 1, 1] [2018-07-25 13:29:35,895 INFO L415 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:35,895 INFO L82 PathProgramCache]: Analyzing trace with hash 577956359, now seen corresponding path program 12 times [2018-07-25 13:29:35,895 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:35,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:35,967 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 56 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:35,968 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:35,968 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 13:29:35,968 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 13:29:35,969 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 13:29:35,969 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2018-07-25 13:29:35,972 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 12 states. [2018-07-25 13:29:36,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:36,043 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2018-07-25 13:29:36,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-25 13:29:36,044 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2018-07-25 13:29:36,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:36,045 INFO L225 Difference]: With dead ends: 41 [2018-07-25 13:29:36,045 INFO L226 Difference]: Without dead ends: 39 [2018-07-25 13:29:36,048 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=146, Invalid=234, Unknown=0, NotChecked=0, Total=380 [2018-07-25 13:29:36,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-07-25 13:29:36,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2018-07-25 13:29:36,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-07-25 13:29:36,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2018-07-25 13:29:36,059 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 32 [2018-07-25 13:29:36,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:36,059 INFO L472 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2018-07-25 13:29:36,060 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 13:29:36,060 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2018-07-25 13:29:36,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-07-25 13:29:36,060 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:36,061 INFO L354 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1] [2018-07-25 13:29:36,061 INFO L415 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:36,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1365213059, now seen corresponding path program 13 times [2018-07-25 13:29:36,061 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:36,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:36,131 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 56 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:36,132 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:36,132 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-07-25 13:29:36,133 INFO L451 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-25 13:29:36,133 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-25 13:29:36,133 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2018-07-25 13:29:36,134 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 18 states. [2018-07-25 13:29:36,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:36,226 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2018-07-25 13:29:36,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 13:29:36,226 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 34 [2018-07-25 13:29:36,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:36,227 INFO L225 Difference]: With dead ends: 56 [2018-07-25 13:29:36,227 INFO L226 Difference]: Without dead ends: 37 [2018-07-25 13:29:36,228 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=177, Invalid=473, Unknown=0, NotChecked=0, Total=650 [2018-07-25 13:29:36,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-07-25 13:29:36,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-07-25 13:29:36,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-07-25 13:29:36,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2018-07-25 13:29:36,239 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 34 [2018-07-25 13:29:36,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:36,240 INFO L472 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2018-07-25 13:29:36,240 INFO L473 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-25 13:29:36,240 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2018-07-25 13:29:36,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-07-25 13:29:36,242 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:36,242 INFO L354 BasicCegarLoop]: trace histogram [9, 8, 8, 7, 1, 1, 1, 1] [2018-07-25 13:29:36,242 INFO L415 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:36,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1260506179, now seen corresponding path program 14 times [2018-07-25 13:29:36,243 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:36,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:36,304 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 72 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:36,304 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:36,305 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-07-25 13:29:36,305 INFO L451 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-25 13:29:36,305 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-25 13:29:36,306 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2018-07-25 13:29:36,306 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 13 states. [2018-07-25 13:29:36,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:36,383 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2018-07-25 13:29:36,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-25 13:29:36,384 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2018-07-25 13:29:36,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:36,384 INFO L225 Difference]: With dead ends: 45 [2018-07-25 13:29:36,384 INFO L226 Difference]: Without dead ends: 43 [2018-07-25 13:29:36,385 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=177, Invalid=285, Unknown=0, NotChecked=0, Total=462 [2018-07-25 13:29:36,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-07-25 13:29:36,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2018-07-25 13:29:36,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-07-25 13:29:36,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2018-07-25 13:29:36,403 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 36 [2018-07-25 13:29:36,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:36,403 INFO L472 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2018-07-25 13:29:36,404 INFO L473 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-25 13:29:36,404 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2018-07-25 13:29:36,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-07-25 13:29:36,404 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:36,405 INFO L354 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 1, 1, 1, 1] [2018-07-25 13:29:36,405 INFO L415 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:36,407 INFO L82 PathProgramCache]: Analyzing trace with hash -165727303, now seen corresponding path program 15 times [2018-07-25 13:29:36,407 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:36,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:36,502 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 72 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:36,502 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:36,502 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-25 13:29:36,503 INFO L451 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-25 13:29:36,503 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-25 13:29:36,504 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2018-07-25 13:29:36,504 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 20 states. [2018-07-25 13:29:36,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:36,609 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2018-07-25 13:29:36,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 13:29:36,610 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 38 [2018-07-25 13:29:36,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:36,610 INFO L225 Difference]: With dead ends: 62 [2018-07-25 13:29:36,611 INFO L226 Difference]: Without dead ends: 41 [2018-07-25 13:29:36,612 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=217, Invalid=595, Unknown=0, NotChecked=0, Total=812 [2018-07-25 13:29:36,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-07-25 13:29:36,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-07-25 13:29:36,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-07-25 13:29:36,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2018-07-25 13:29:36,624 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 38 [2018-07-25 13:29:36,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:36,625 INFO L472 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2018-07-25 13:29:36,626 INFO L473 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-25 13:29:36,626 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2018-07-25 13:29:36,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-07-25 13:29:36,627 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:36,627 INFO L354 BasicCegarLoop]: trace histogram [10, 9, 9, 8, 1, 1, 1, 1] [2018-07-25 13:29:36,631 INFO L415 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:36,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1448426227, now seen corresponding path program 16 times [2018-07-25 13:29:36,632 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:36,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:36,693 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 90 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:36,694 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:36,694 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-07-25 13:29:36,694 INFO L451 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-25 13:29:36,695 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-25 13:29:36,695 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2018-07-25 13:29:36,695 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 14 states. [2018-07-25 13:29:36,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:36,772 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2018-07-25 13:29:36,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-25 13:29:36,773 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 40 [2018-07-25 13:29:36,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:36,774 INFO L225 Difference]: With dead ends: 49 [2018-07-25 13:29:36,774 INFO L226 Difference]: Without dead ends: 47 [2018-07-25 13:29:36,775 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=211, Invalid=341, Unknown=0, NotChecked=0, Total=552 [2018-07-25 13:29:36,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-07-25 13:29:36,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2018-07-25 13:29:36,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-07-25 13:29:36,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2018-07-25 13:29:36,785 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 40 [2018-07-25 13:29:36,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:36,785 INFO L472 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2018-07-25 13:29:36,785 INFO L473 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-25 13:29:36,786 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2018-07-25 13:29:36,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-07-25 13:29:36,786 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:36,787 INFO L354 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 1, 1, 1, 1] [2018-07-25 13:29:36,787 INFO L415 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:36,787 INFO L82 PathProgramCache]: Analyzing trace with hash 368133487, now seen corresponding path program 17 times [2018-07-25 13:29:36,787 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:36,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:36,885 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 90 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:36,885 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:36,886 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-07-25 13:29:36,886 INFO L451 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-25 13:29:36,886 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-25 13:29:36,887 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2018-07-25 13:29:36,887 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 22 states. [2018-07-25 13:29:37,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:37,024 INFO L93 Difference]: Finished difference Result 68 states and 70 transitions. [2018-07-25 13:29:37,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 13:29:37,025 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 42 [2018-07-25 13:29:37,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:37,026 INFO L225 Difference]: With dead ends: 68 [2018-07-25 13:29:37,026 INFO L226 Difference]: Without dead ends: 45 [2018-07-25 13:29:37,027 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=261, Invalid=731, Unknown=0, NotChecked=0, Total=992 [2018-07-25 13:29:37,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-07-25 13:29:37,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-07-25 13:29:37,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-07-25 13:29:37,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2018-07-25 13:29:37,040 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 42 [2018-07-25 13:29:37,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:37,041 INFO L472 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2018-07-25 13:29:37,041 INFO L473 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-25 13:29:37,041 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2018-07-25 13:29:37,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-07-25 13:29:37,041 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:37,042 INFO L354 BasicCegarLoop]: trace histogram [11, 10, 10, 9, 1, 1, 1, 1] [2018-07-25 13:29:37,042 INFO L415 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:37,044 INFO L82 PathProgramCache]: Analyzing trace with hash -788717655, now seen corresponding path program 18 times [2018-07-25 13:29:37,044 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:37,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:37,121 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 110 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:37,122 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:37,122 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-07-25 13:29:37,122 INFO L451 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-25 13:29:37,122 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-25 13:29:37,123 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2018-07-25 13:29:37,123 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 15 states. [2018-07-25 13:29:37,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:37,198 INFO L93 Difference]: Finished difference Result 53 states and 54 transitions. [2018-07-25 13:29:37,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-07-25 13:29:37,199 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 44 [2018-07-25 13:29:37,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:37,200 INFO L225 Difference]: With dead ends: 53 [2018-07-25 13:29:37,200 INFO L226 Difference]: Without dead ends: 51 [2018-07-25 13:29:37,201 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=248, Invalid=402, Unknown=0, NotChecked=0, Total=650 [2018-07-25 13:29:37,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-07-25 13:29:37,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 47. [2018-07-25 13:29:37,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-07-25 13:29:37,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2018-07-25 13:29:37,214 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 44 [2018-07-25 13:29:37,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:37,215 INFO L472 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2018-07-25 13:29:37,215 INFO L473 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-25 13:29:37,215 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2018-07-25 13:29:37,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-07-25 13:29:37,216 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:37,216 INFO L354 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1] [2018-07-25 13:29:37,216 INFO L415 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:37,218 INFO L82 PathProgramCache]: Analyzing trace with hash -2043489115, now seen corresponding path program 19 times [2018-07-25 13:29:37,218 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:37,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:37,317 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 110 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:37,317 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:37,318 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-25 13:29:37,318 INFO L451 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-25 13:29:37,318 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-25 13:29:37,319 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2018-07-25 13:29:37,321 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 24 states. [2018-07-25 13:29:37,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:37,427 INFO L93 Difference]: Finished difference Result 74 states and 76 transitions. [2018-07-25 13:29:37,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-25 13:29:37,428 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 46 [2018-07-25 13:29:37,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:37,429 INFO L225 Difference]: With dead ends: 74 [2018-07-25 13:29:37,429 INFO L226 Difference]: Without dead ends: 49 [2018-07-25 13:29:37,430 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=309, Invalid=881, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 13:29:37,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-07-25 13:29:37,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-07-25 13:29:37,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-07-25 13:29:37,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2018-07-25 13:29:37,447 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 46 [2018-07-25 13:29:37,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:37,447 INFO L472 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2018-07-25 13:29:37,447 INFO L473 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-25 13:29:37,448 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2018-07-25 13:29:37,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-07-25 13:29:37,448 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:37,448 INFO L354 BasicCegarLoop]: trace histogram [12, 11, 11, 10, 1, 1, 1, 1] [2018-07-25 13:29:37,449 INFO L415 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:37,449 INFO L82 PathProgramCache]: Analyzing trace with hash -957152801, now seen corresponding path program 20 times [2018-07-25 13:29:37,449 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:37,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:37,524 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 132 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:37,525 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:37,525 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-25 13:29:37,525 INFO L451 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-25 13:29:37,526 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-25 13:29:37,526 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2018-07-25 13:29:37,526 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand 16 states. [2018-07-25 13:29:37,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:37,612 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2018-07-25 13:29:37,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-07-25 13:29:37,612 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 48 [2018-07-25 13:29:37,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:37,613 INFO L225 Difference]: With dead ends: 57 [2018-07-25 13:29:37,613 INFO L226 Difference]: Without dead ends: 55 [2018-07-25 13:29:37,614 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=288, Invalid=468, Unknown=0, NotChecked=0, Total=756 [2018-07-25 13:29:37,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-07-25 13:29:37,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 51. [2018-07-25 13:29:37,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-07-25 13:29:37,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2018-07-25 13:29:37,626 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 48 [2018-07-25 13:29:37,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:37,626 INFO L472 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2018-07-25 13:29:37,626 INFO L473 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-25 13:29:37,626 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2018-07-25 13:29:37,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-07-25 13:29:37,627 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:37,627 INFO L354 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 1, 1, 1, 1] [2018-07-25 13:29:37,627 INFO L415 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:37,628 INFO L82 PathProgramCache]: Analyzing trace with hash -700907173, now seen corresponding path program 21 times [2018-07-25 13:29:37,628 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:37,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:37,731 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 132 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:37,732 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:37,732 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-07-25 13:29:37,732 INFO L451 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-25 13:29:37,733 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-25 13:29:37,733 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2018-07-25 13:29:37,733 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 26 states. [2018-07-25 13:29:37,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:37,870 INFO L93 Difference]: Finished difference Result 80 states and 82 transitions. [2018-07-25 13:29:37,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-25 13:29:37,870 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 50 [2018-07-25 13:29:37,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:37,871 INFO L225 Difference]: With dead ends: 80 [2018-07-25 13:29:37,871 INFO L226 Difference]: Without dead ends: 53 [2018-07-25 13:29:37,873 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=361, Invalid=1045, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 13:29:37,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-07-25 13:29:37,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-07-25 13:29:37,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-07-25 13:29:37,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2018-07-25 13:29:37,885 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 50 [2018-07-25 13:29:37,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:37,885 INFO L472 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2018-07-25 13:29:37,885 INFO L473 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-07-25 13:29:37,885 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2018-07-25 13:29:37,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-07-25 13:29:37,886 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:37,886 INFO L354 BasicCegarLoop]: trace histogram [13, 12, 12, 11, 1, 1, 1, 1] [2018-07-25 13:29:37,887 INFO L415 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:37,887 INFO L82 PathProgramCache]: Analyzing trace with hash 877396373, now seen corresponding path program 22 times [2018-07-25 13:29:37,887 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:37,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:37,962 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 156 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:37,963 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:37,963 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-07-25 13:29:37,963 INFO L451 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-25 13:29:37,963 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-25 13:29:37,964 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2018-07-25 13:29:37,964 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 17 states. [2018-07-25 13:29:38,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:38,057 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2018-07-25 13:29:38,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-25 13:29:38,057 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 52 [2018-07-25 13:29:38,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:38,058 INFO L225 Difference]: With dead ends: 61 [2018-07-25 13:29:38,058 INFO L226 Difference]: Without dead ends: 59 [2018-07-25 13:29:38,059 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=331, Invalid=539, Unknown=0, NotChecked=0, Total=870 [2018-07-25 13:29:38,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-07-25 13:29:38,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2018-07-25 13:29:38,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-07-25 13:29:38,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2018-07-25 13:29:38,073 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 52 [2018-07-25 13:29:38,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:38,074 INFO L472 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2018-07-25 13:29:38,074 INFO L473 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-25 13:29:38,074 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2018-07-25 13:29:38,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-07-25 13:29:38,075 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:38,075 INFO L354 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 1, 1, 1, 1] [2018-07-25 13:29:38,075 INFO L415 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:38,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1364257681, now seen corresponding path program 23 times [2018-07-25 13:29:38,075 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:38,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:38,261 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 156 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:38,262 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:38,262 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-25 13:29:38,262 INFO L451 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-25 13:29:38,263 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-25 13:29:38,263 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2018-07-25 13:29:38,263 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 28 states. [2018-07-25 13:29:38,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:38,418 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2018-07-25 13:29:38,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-25 13:29:38,418 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 54 [2018-07-25 13:29:38,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:38,419 INFO L225 Difference]: With dead ends: 86 [2018-07-25 13:29:38,419 INFO L226 Difference]: Without dead ends: 57 [2018-07-25 13:29:38,421 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=417, Invalid=1223, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 13:29:38,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-07-25 13:29:38,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-07-25 13:29:38,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-07-25 13:29:38,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2018-07-25 13:29:38,434 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 54 [2018-07-25 13:29:38,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:38,434 INFO L472 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2018-07-25 13:29:38,435 INFO L473 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-25 13:29:38,435 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2018-07-25 13:29:38,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-07-25 13:29:38,435 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:38,435 INFO L354 BasicCegarLoop]: trace histogram [14, 13, 13, 12, 1, 1, 1, 1] [2018-07-25 13:29:38,436 INFO L415 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:38,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1897217739, now seen corresponding path program 24 times [2018-07-25 13:29:38,436 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:38,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:38,506 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 182 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:38,507 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:38,507 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-07-25 13:29:38,507 INFO L451 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-25 13:29:38,508 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-25 13:29:38,508 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2018-07-25 13:29:38,508 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand 18 states. [2018-07-25 13:29:38,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:38,597 INFO L93 Difference]: Finished difference Result 65 states and 66 transitions. [2018-07-25 13:29:38,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-07-25 13:29:38,597 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 56 [2018-07-25 13:29:38,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:38,598 INFO L225 Difference]: With dead ends: 65 [2018-07-25 13:29:38,598 INFO L226 Difference]: Without dead ends: 63 [2018-07-25 13:29:38,599 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=377, Invalid=615, Unknown=0, NotChecked=0, Total=992 [2018-07-25 13:29:38,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-07-25 13:29:38,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2018-07-25 13:29:38,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-07-25 13:29:38,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2018-07-25 13:29:38,612 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 56 [2018-07-25 13:29:38,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:38,613 INFO L472 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2018-07-25 13:29:38,613 INFO L473 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-25 13:29:38,613 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2018-07-25 13:29:38,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-07-25 13:29:38,613 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:38,613 INFO L354 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 1, 1, 1, 1] [2018-07-25 13:29:38,614 INFO L415 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:38,614 INFO L82 PathProgramCache]: Analyzing trace with hash -2134920377, now seen corresponding path program 25 times [2018-07-25 13:29:38,614 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:38,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:38,726 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 182 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:38,726 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:38,726 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-07-25 13:29:38,727 INFO L451 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-07-25 13:29:38,727 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-07-25 13:29:38,727 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2018-07-25 13:29:38,728 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand 30 states. [2018-07-25 13:29:38,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:38,902 INFO L93 Difference]: Finished difference Result 92 states and 94 transitions. [2018-07-25 13:29:38,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-25 13:29:38,902 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 58 [2018-07-25 13:29:38,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:38,903 INFO L225 Difference]: With dead ends: 92 [2018-07-25 13:29:38,903 INFO L226 Difference]: Without dead ends: 61 [2018-07-25 13:29:38,904 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=477, Invalid=1415, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 13:29:38,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-07-25 13:29:38,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-07-25 13:29:38,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-07-25 13:29:38,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2018-07-25 13:29:38,917 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 58 [2018-07-25 13:29:38,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:38,917 INFO L472 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2018-07-25 13:29:38,918 INFO L473 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-07-25 13:29:38,918 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2018-07-25 13:29:38,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-07-25 13:29:38,918 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:38,918 INFO L354 BasicCegarLoop]: trace histogram [15, 14, 14, 13, 1, 1, 1, 1] [2018-07-25 13:29:38,919 INFO L415 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:38,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1286350463, now seen corresponding path program 26 times [2018-07-25 13:29:38,919 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:38,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:38,996 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 210 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:38,996 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:38,997 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-07-25 13:29:38,997 INFO L451 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-25 13:29:38,997 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-25 13:29:38,997 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2018-07-25 13:29:38,998 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand 19 states. [2018-07-25 13:29:39,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:39,085 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2018-07-25 13:29:39,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-25 13:29:39,086 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 60 [2018-07-25 13:29:39,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:39,086 INFO L225 Difference]: With dead ends: 69 [2018-07-25 13:29:39,086 INFO L226 Difference]: Without dead ends: 67 [2018-07-25 13:29:39,087 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=426, Invalid=696, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 13:29:39,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-07-25 13:29:39,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2018-07-25 13:29:39,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-07-25 13:29:39,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2018-07-25 13:29:39,101 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 60 [2018-07-25 13:29:39,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:39,101 INFO L472 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2018-07-25 13:29:39,101 INFO L473 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-25 13:29:39,101 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2018-07-25 13:29:39,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-07-25 13:29:39,102 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:39,102 INFO L354 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 1, 1, 1, 1] [2018-07-25 13:29:39,102 INFO L415 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:39,103 INFO L82 PathProgramCache]: Analyzing trace with hash 767719549, now seen corresponding path program 27 times [2018-07-25 13:29:39,103 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:39,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:39,215 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 210 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:39,215 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:39,215 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-25 13:29:39,215 INFO L451 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-25 13:29:39,216 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-25 13:29:39,216 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2018-07-25 13:29:39,217 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 32 states. [2018-07-25 13:29:39,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:39,390 INFO L93 Difference]: Finished difference Result 98 states and 100 transitions. [2018-07-25 13:29:39,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-07-25 13:29:39,390 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 62 [2018-07-25 13:29:39,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:39,391 INFO L225 Difference]: With dead ends: 98 [2018-07-25 13:29:39,391 INFO L226 Difference]: Without dead ends: 65 [2018-07-25 13:29:39,393 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=541, Invalid=1621, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 13:29:39,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-07-25 13:29:39,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-07-25 13:29:39,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-07-25 13:29:39,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2018-07-25 13:29:39,408 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 62 [2018-07-25 13:29:39,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:39,408 INFO L472 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2018-07-25 13:29:39,409 INFO L473 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-25 13:29:39,409 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2018-07-25 13:29:39,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-07-25 13:29:39,409 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:39,409 INFO L354 BasicCegarLoop]: trace histogram [16, 15, 15, 14, 1, 1, 1, 1] [2018-07-25 13:29:39,410 INFO L415 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:39,410 INFO L82 PathProgramCache]: Analyzing trace with hash 285536695, now seen corresponding path program 28 times [2018-07-25 13:29:39,410 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:39,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:39,492 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 240 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:39,493 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:39,493 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-25 13:29:39,493 INFO L451 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-25 13:29:39,494 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-25 13:29:39,494 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2018-07-25 13:29:39,494 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand 20 states. [2018-07-25 13:29:39,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:39,585 INFO L93 Difference]: Finished difference Result 73 states and 74 transitions. [2018-07-25 13:29:39,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-07-25 13:29:39,585 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 64 [2018-07-25 13:29:39,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:39,586 INFO L225 Difference]: With dead ends: 73 [2018-07-25 13:29:39,586 INFO L226 Difference]: Without dead ends: 71 [2018-07-25 13:29:39,587 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=478, Invalid=782, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 13:29:39,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-07-25 13:29:39,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 67. [2018-07-25 13:29:39,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-07-25 13:29:39,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2018-07-25 13:29:39,603 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 64 [2018-07-25 13:29:39,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:39,603 INFO L472 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2018-07-25 13:29:39,603 INFO L473 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-25 13:29:39,604 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2018-07-25 13:29:39,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-07-25 13:29:39,604 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:39,604 INFO L354 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 1, 1, 1, 1] [2018-07-25 13:29:39,605 INFO L415 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:39,605 INFO L82 PathProgramCache]: Analyzing trace with hash -477209805, now seen corresponding path program 29 times [2018-07-25 13:29:39,605 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:39,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:39,730 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 240 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:39,730 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:39,731 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-07-25 13:29:39,731 INFO L451 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-07-25 13:29:39,731 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-07-25 13:29:39,732 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 13:29:39,732 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand 34 states. [2018-07-25 13:29:39,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:39,942 INFO L93 Difference]: Finished difference Result 104 states and 106 transitions. [2018-07-25 13:29:39,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-25 13:29:39,942 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 66 [2018-07-25 13:29:39,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:39,943 INFO L225 Difference]: With dead ends: 104 [2018-07-25 13:29:39,943 INFO L226 Difference]: Without dead ends: 69 [2018-07-25 13:29:39,945 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=609, Invalid=1841, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 13:29:39,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-07-25 13:29:39,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-07-25 13:29:39,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-07-25 13:29:39,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2018-07-25 13:29:39,962 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 66 [2018-07-25 13:29:39,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:39,962 INFO L472 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2018-07-25 13:29:39,963 INFO L473 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-07-25 13:29:39,963 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2018-07-25 13:29:39,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-07-25 13:29:39,963 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:39,963 INFO L354 BasicCegarLoop]: trace histogram [17, 16, 16, 15, 1, 1, 1, 1] [2018-07-25 13:29:39,964 INFO L415 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:39,964 INFO L82 PathProgramCache]: Analyzing trace with hash 35497837, now seen corresponding path program 30 times [2018-07-25 13:29:39,964 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:39,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:40,063 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 272 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:40,063 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:40,063 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-07-25 13:29:40,064 INFO L451 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-07-25 13:29:40,064 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-07-25 13:29:40,064 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2018-07-25 13:29:40,065 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand 21 states. [2018-07-25 13:29:40,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:40,167 INFO L93 Difference]: Finished difference Result 77 states and 78 transitions. [2018-07-25 13:29:40,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-07-25 13:29:40,168 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 68 [2018-07-25 13:29:40,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:40,168 INFO L225 Difference]: With dead ends: 77 [2018-07-25 13:29:40,169 INFO L226 Difference]: Without dead ends: 75 [2018-07-25 13:29:40,170 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=533, Invalid=873, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 13:29:40,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-07-25 13:29:40,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 71. [2018-07-25 13:29:40,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-07-25 13:29:40,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2018-07-25 13:29:40,188 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 68 [2018-07-25 13:29:40,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:40,189 INFO L472 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2018-07-25 13:29:40,189 INFO L473 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-07-25 13:29:40,189 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2018-07-25 13:29:40,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-07-25 13:29:40,190 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:40,191 INFO L354 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 1, 1, 1, 1] [2018-07-25 13:29:40,191 INFO L415 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:40,191 INFO L82 PathProgramCache]: Analyzing trace with hash -246383767, now seen corresponding path program 31 times [2018-07-25 13:29:40,191 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:40,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:40,336 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 272 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:40,337 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:40,337 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-25 13:29:40,337 INFO L451 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-25 13:29:40,338 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-25 13:29:40,338 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=919, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 13:29:40,339 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand 36 states. [2018-07-25 13:29:40,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:40,564 INFO L93 Difference]: Finished difference Result 110 states and 112 transitions. [2018-07-25 13:29:40,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-07-25 13:29:40,564 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 70 [2018-07-25 13:29:40,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:40,565 INFO L225 Difference]: With dead ends: 110 [2018-07-25 13:29:40,565 INFO L226 Difference]: Without dead ends: 73 [2018-07-25 13:29:40,567 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=681, Invalid=2075, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 13:29:40,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-07-25 13:29:40,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-07-25 13:29:40,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-07-25 13:29:40,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2018-07-25 13:29:40,585 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 70 [2018-07-25 13:29:40,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:40,586 INFO L472 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2018-07-25 13:29:40,586 INFO L473 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-25 13:29:40,586 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2018-07-25 13:29:40,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-07-25 13:29:40,586 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:40,587 INFO L354 BasicCegarLoop]: trace histogram [18, 17, 17, 16, 1, 1, 1, 1] [2018-07-25 13:29:40,587 INFO L415 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:40,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1653283491, now seen corresponding path program 32 times [2018-07-25 13:29:40,591 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:40,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:40,700 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 306 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:40,701 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:40,701 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-07-25 13:29:40,702 INFO L451 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-25 13:29:40,702 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-25 13:29:40,702 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2018-07-25 13:29:40,703 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand 22 states. [2018-07-25 13:29:40,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:40,827 INFO L93 Difference]: Finished difference Result 81 states and 82 transitions. [2018-07-25 13:29:40,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-25 13:29:40,827 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 72 [2018-07-25 13:29:40,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:40,828 INFO L225 Difference]: With dead ends: 81 [2018-07-25 13:29:40,828 INFO L226 Difference]: Without dead ends: 79 [2018-07-25 13:29:40,830 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=591, Invalid=969, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 13:29:40,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-07-25 13:29:40,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2018-07-25 13:29:40,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-07-25 13:29:40,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2018-07-25 13:29:40,853 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 72 [2018-07-25 13:29:40,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:40,854 INFO L472 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2018-07-25 13:29:40,854 INFO L473 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-25 13:29:40,854 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2018-07-25 13:29:40,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-07-25 13:29:40,855 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:40,855 INFO L354 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 1, 1, 1, 1] [2018-07-25 13:29:40,855 INFO L415 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:40,856 INFO L82 PathProgramCache]: Analyzing trace with hash -332531425, now seen corresponding path program 33 times [2018-07-25 13:29:40,856 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:40,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:41,059 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 306 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:41,059 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:41,059 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-07-25 13:29:41,060 INFO L451 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-07-25 13:29:41,060 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-07-25 13:29:41,061 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=1027, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 13:29:41,061 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand 38 states. [2018-07-25 13:29:41,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:41,361 INFO L93 Difference]: Finished difference Result 116 states and 118 transitions. [2018-07-25 13:29:41,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-25 13:29:41,361 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 74 [2018-07-25 13:29:41,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:41,362 INFO L225 Difference]: With dead ends: 116 [2018-07-25 13:29:41,362 INFO L226 Difference]: Without dead ends: 77 [2018-07-25 13:29:41,365 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=757, Invalid=2323, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 13:29:41,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-07-25 13:29:41,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-07-25 13:29:41,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-07-25 13:29:41,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2018-07-25 13:29:41,384 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 74 [2018-07-25 13:29:41,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:41,385 INFO L472 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2018-07-25 13:29:41,385 INFO L473 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-07-25 13:29:41,385 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2018-07-25 13:29:41,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-07-25 13:29:41,386 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:41,386 INFO L354 BasicCegarLoop]: trace histogram [19, 18, 18, 17, 1, 1, 1, 1] [2018-07-25 13:29:41,386 INFO L415 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:41,386 INFO L82 PathProgramCache]: Analyzing trace with hash -198022311, now seen corresponding path program 34 times [2018-07-25 13:29:41,386 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:41,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:41,486 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 342 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:41,486 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:41,487 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-07-25 13:29:41,487 INFO L451 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-07-25 13:29:41,487 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-07-25 13:29:41,488 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2018-07-25 13:29:41,488 INFO L87 Difference]: Start difference. First operand 77 states and 78 transitions. Second operand 23 states. [2018-07-25 13:29:41,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:41,605 INFO L93 Difference]: Finished difference Result 85 states and 86 transitions. [2018-07-25 13:29:41,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-07-25 13:29:41,606 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 76 [2018-07-25 13:29:41,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:41,607 INFO L225 Difference]: With dead ends: 85 [2018-07-25 13:29:41,607 INFO L226 Difference]: Without dead ends: 83 [2018-07-25 13:29:41,608 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=652, Invalid=1070, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 13:29:41,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-07-25 13:29:41,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2018-07-25 13:29:41,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-07-25 13:29:41,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2018-07-25 13:29:41,630 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 76 [2018-07-25 13:29:41,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:41,630 INFO L472 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2018-07-25 13:29:41,631 INFO L473 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-07-25 13:29:41,631 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2018-07-25 13:29:41,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-07-25 13:29:41,631 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:41,632 INFO L354 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 1, 1, 1, 1] [2018-07-25 13:29:41,632 INFO L415 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:41,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1320946603, now seen corresponding path program 35 times [2018-07-25 13:29:41,632 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:41,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:41,820 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 342 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:41,821 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:41,821 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-25 13:29:41,821 INFO L451 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-25 13:29:41,822 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-25 13:29:41,822 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=1141, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 13:29:41,823 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand 40 states. [2018-07-25 13:29:42,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:42,094 INFO L93 Difference]: Finished difference Result 122 states and 124 transitions. [2018-07-25 13:29:42,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-07-25 13:29:42,094 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 78 [2018-07-25 13:29:42,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:42,095 INFO L225 Difference]: With dead ends: 122 [2018-07-25 13:29:42,095 INFO L226 Difference]: Without dead ends: 81 [2018-07-25 13:29:42,097 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=837, Invalid=2585, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 13:29:42,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-07-25 13:29:42,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-07-25 13:29:42,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-07-25 13:29:42,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2018-07-25 13:29:42,120 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 78 [2018-07-25 13:29:42,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:42,121 INFO L472 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2018-07-25 13:29:42,121 INFO L473 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-25 13:29:42,121 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2018-07-25 13:29:42,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-07-25 13:29:42,123 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:42,124 INFO L354 BasicCegarLoop]: trace histogram [20, 19, 19, 18, 1, 1, 1, 1] [2018-07-25 13:29:42,124 INFO L415 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:42,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1626388879, now seen corresponding path program 36 times [2018-07-25 13:29:42,124 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:42,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:42,254 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 380 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:42,255 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:42,255 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-25 13:29:42,255 INFO L451 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-25 13:29:42,255 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-25 13:29:42,256 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2018-07-25 13:29:42,256 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand 24 states. [2018-07-25 13:29:42,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:42,390 INFO L93 Difference]: Finished difference Result 89 states and 90 transitions. [2018-07-25 13:29:42,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-07-25 13:29:42,390 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 80 [2018-07-25 13:29:42,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:42,391 INFO L225 Difference]: With dead ends: 89 [2018-07-25 13:29:42,391 INFO L226 Difference]: Without dead ends: 87 [2018-07-25 13:29:42,392 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=716, Invalid=1176, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 13:29:42,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-07-25 13:29:42,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 83. [2018-07-25 13:29:42,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-07-25 13:29:42,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2018-07-25 13:29:42,418 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 80 [2018-07-25 13:29:42,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:42,418 INFO L472 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2018-07-25 13:29:42,419 INFO L473 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-25 13:29:42,419 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2018-07-25 13:29:42,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-07-25 13:29:42,420 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:42,420 INFO L354 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 1, 1, 1, 1] [2018-07-25 13:29:42,420 INFO L415 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:42,420 INFO L82 PathProgramCache]: Analyzing trace with hash -408449781, now seen corresponding path program 37 times [2018-07-25 13:29:42,420 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:42,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:42,626 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 380 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:42,626 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:42,627 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-07-25 13:29:42,627 INFO L451 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-07-25 13:29:42,627 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-07-25 13:29:42,628 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=1261, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 13:29:42,628 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand 42 states. [2018-07-25 13:29:42,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:42,933 INFO L93 Difference]: Finished difference Result 128 states and 130 transitions. [2018-07-25 13:29:42,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-07-25 13:29:42,934 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 82 [2018-07-25 13:29:42,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:42,934 INFO L225 Difference]: With dead ends: 128 [2018-07-25 13:29:42,935 INFO L226 Difference]: Without dead ends: 85 [2018-07-25 13:29:42,937 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=921, Invalid=2861, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 13:29:42,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-07-25 13:29:42,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-07-25 13:29:42,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-07-25 13:29:42,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions. [2018-07-25 13:29:42,961 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 82 [2018-07-25 13:29:42,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:42,962 INFO L472 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions. [2018-07-25 13:29:42,962 INFO L473 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-07-25 13:29:42,962 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions. [2018-07-25 13:29:42,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-07-25 13:29:42,963 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:42,963 INFO L354 BasicCegarLoop]: trace histogram [21, 20, 20, 19, 1, 1, 1, 1] [2018-07-25 13:29:42,963 INFO L415 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:42,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1130683067, now seen corresponding path program 38 times [2018-07-25 13:29:42,964 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:42,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:43,098 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 420 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:43,099 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:43,099 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-07-25 13:29:43,100 INFO L451 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-07-25 13:29:43,100 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-07-25 13:29:43,100 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2018-07-25 13:29:43,101 INFO L87 Difference]: Start difference. First operand 85 states and 86 transitions. Second operand 25 states. [2018-07-25 13:29:43,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:43,242 INFO L93 Difference]: Finished difference Result 93 states and 94 transitions. [2018-07-25 13:29:43,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-07-25 13:29:43,243 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 84 [2018-07-25 13:29:43,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:43,244 INFO L225 Difference]: With dead ends: 93 [2018-07-25 13:29:43,244 INFO L226 Difference]: Without dead ends: 91 [2018-07-25 13:29:43,245 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=783, Invalid=1287, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 13:29:43,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-07-25 13:29:43,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2018-07-25 13:29:43,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-07-25 13:29:43,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2018-07-25 13:29:43,273 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 84 [2018-07-25 13:29:43,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:43,273 INFO L472 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2018-07-25 13:29:43,273 INFO L473 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-07-25 13:29:43,273 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2018-07-25 13:29:43,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-07-25 13:29:43,274 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:43,274 INFO L354 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 1, 1, 1, 1] [2018-07-25 13:29:43,274 INFO L415 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:43,275 INFO L82 PathProgramCache]: Analyzing trace with hash 40231745, now seen corresponding path program 39 times [2018-07-25 13:29:43,275 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:43,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:43,500 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 420 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:43,500 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:43,500 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-25 13:29:43,501 INFO L451 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-25 13:29:43,501 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-25 13:29:43,502 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=505, Invalid=1387, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 13:29:43,502 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand 44 states. [2018-07-25 13:29:43,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:43,739 INFO L93 Difference]: Finished difference Result 134 states and 136 transitions. [2018-07-25 13:29:43,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-25 13:29:43,739 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 86 [2018-07-25 13:29:43,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:43,740 INFO L225 Difference]: With dead ends: 134 [2018-07-25 13:29:43,740 INFO L226 Difference]: Without dead ends: 89 [2018-07-25 13:29:43,742 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1009, Invalid=3151, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 13:29:43,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-07-25 13:29:43,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-07-25 13:29:43,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-07-25 13:29:43,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2018-07-25 13:29:43,769 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 86 [2018-07-25 13:29:43,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:43,770 INFO L472 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2018-07-25 13:29:43,770 INFO L473 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-25 13:29:43,770 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2018-07-25 13:29:43,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-07-25 13:29:43,771 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:43,771 INFO L354 BasicCegarLoop]: trace histogram [22, 21, 21, 20, 1, 1, 1, 1] [2018-07-25 13:29:43,771 INFO L415 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:43,772 INFO L82 PathProgramCache]: Analyzing trace with hash -2030121349, now seen corresponding path program 40 times [2018-07-25 13:29:43,772 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:43,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:43,924 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 462 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:43,924 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:43,924 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-07-25 13:29:43,925 INFO L451 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-25 13:29:43,925 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-25 13:29:43,925 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2018-07-25 13:29:43,926 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand 26 states. [2018-07-25 13:29:44,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:44,082 INFO L93 Difference]: Finished difference Result 97 states and 98 transitions. [2018-07-25 13:29:44,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-07-25 13:29:44,082 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 88 [2018-07-25 13:29:44,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:44,083 INFO L225 Difference]: With dead ends: 97 [2018-07-25 13:29:44,083 INFO L226 Difference]: Without dead ends: 95 [2018-07-25 13:29:44,084 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=853, Invalid=1403, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 13:29:44,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-07-25 13:29:44,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 91. [2018-07-25 13:29:44,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-07-25 13:29:44,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2018-07-25 13:29:44,116 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 88 [2018-07-25 13:29:44,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:44,116 INFO L472 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2018-07-25 13:29:44,116 INFO L473 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-07-25 13:29:44,117 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2018-07-25 13:29:44,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-07-25 13:29:44,118 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:44,118 INFO L354 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 1, 1, 1, 1] [2018-07-25 13:29:44,118 INFO L415 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:44,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1031530761, now seen corresponding path program 41 times [2018-07-25 13:29:44,119 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:44,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:44,377 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 462 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:44,378 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:44,378 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-07-25 13:29:44,378 INFO L451 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-07-25 13:29:44,379 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-07-25 13:29:44,380 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 13:29:44,380 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand 46 states. [2018-07-25 13:29:44,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:44,797 INFO L93 Difference]: Finished difference Result 140 states and 142 transitions. [2018-07-25 13:29:44,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-07-25 13:29:44,797 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 90 [2018-07-25 13:29:44,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:44,798 INFO L225 Difference]: With dead ends: 140 [2018-07-25 13:29:44,798 INFO L226 Difference]: Without dead ends: 93 [2018-07-25 13:29:44,800 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=1101, Invalid=3455, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 13:29:44,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-07-25 13:29:44,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-07-25 13:29:44,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-07-25 13:29:44,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 94 transitions. [2018-07-25 13:29:44,831 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 94 transitions. Word has length 90 [2018-07-25 13:29:44,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:44,832 INFO L472 AbstractCegarLoop]: Abstraction has 93 states and 94 transitions. [2018-07-25 13:29:44,832 INFO L473 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-07-25 13:29:44,832 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 94 transitions. [2018-07-25 13:29:44,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-07-25 13:29:44,862 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:44,863 INFO L354 BasicCegarLoop]: trace histogram [23, 22, 22, 21, 1, 1, 1, 1] [2018-07-25 13:29:44,863 INFO L415 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:44,863 INFO L82 PathProgramCache]: Analyzing trace with hash 769709361, now seen corresponding path program 42 times [2018-07-25 13:29:44,867 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:44,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:44,991 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 506 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:44,992 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:44,992 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-07-25 13:29:44,993 INFO L451 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-07-25 13:29:44,993 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-07-25 13:29:44,993 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2018-07-25 13:29:44,994 INFO L87 Difference]: Start difference. First operand 93 states and 94 transitions. Second operand 27 states. [2018-07-25 13:29:45,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:45,141 INFO L93 Difference]: Finished difference Result 101 states and 102 transitions. [2018-07-25 13:29:45,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-07-25 13:29:45,141 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 92 [2018-07-25 13:29:45,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:45,142 INFO L225 Difference]: With dead ends: 101 [2018-07-25 13:29:45,142 INFO L226 Difference]: Without dead ends: 99 [2018-07-25 13:29:45,143 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=926, Invalid=1524, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 13:29:45,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-07-25 13:29:45,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 95. [2018-07-25 13:29:45,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-07-25 13:29:45,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2018-07-25 13:29:45,174 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 92 [2018-07-25 13:29:45,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:45,174 INFO L472 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2018-07-25 13:29:45,174 INFO L473 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-07-25 13:29:45,174 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2018-07-25 13:29:45,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-07-25 13:29:45,175 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:45,175 INFO L354 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 1, 1, 1, 1] [2018-07-25 13:29:45,175 INFO L415 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:45,176 INFO L82 PathProgramCache]: Analyzing trace with hash 956254253, now seen corresponding path program 43 times [2018-07-25 13:29:45,176 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:45,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:45,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 506 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:45,392 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:45,392 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-25 13:29:45,392 INFO L451 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-25 13:29:45,393 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-25 13:29:45,393 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 13:29:45,394 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand 48 states. [2018-07-25 13:29:45,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:45,765 INFO L93 Difference]: Finished difference Result 146 states and 148 transitions. [2018-07-25 13:29:45,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-07-25 13:29:45,766 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 94 [2018-07-25 13:29:45,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:45,767 INFO L225 Difference]: With dead ends: 146 [2018-07-25 13:29:45,767 INFO L226 Difference]: Without dead ends: 97 [2018-07-25 13:29:45,768 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1197, Invalid=3773, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 13:29:45,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-07-25 13:29:45,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-07-25 13:29:45,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-07-25 13:29:45,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 98 transitions. [2018-07-25 13:29:45,796 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 98 transitions. Word has length 94 [2018-07-25 13:29:45,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:45,797 INFO L472 AbstractCegarLoop]: Abstraction has 97 states and 98 transitions. [2018-07-25 13:29:45,797 INFO L473 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-25 13:29:45,797 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 98 transitions. [2018-07-25 13:29:45,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-07-25 13:29:45,798 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:45,798 INFO L354 BasicCegarLoop]: trace histogram [24, 23, 23, 22, 1, 1, 1, 1] [2018-07-25 13:29:45,798 INFO L415 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:45,798 INFO L82 PathProgramCache]: Analyzing trace with hash 251550055, now seen corresponding path program 44 times [2018-07-25 13:29:45,799 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:45,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:45,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 552 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:45,920 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:45,921 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-25 13:29:45,921 INFO L451 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-25 13:29:45,921 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-25 13:29:45,922 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2018-07-25 13:29:45,922 INFO L87 Difference]: Start difference. First operand 97 states and 98 transitions. Second operand 28 states. [2018-07-25 13:29:46,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:46,062 INFO L93 Difference]: Finished difference Result 105 states and 106 transitions. [2018-07-25 13:29:46,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-07-25 13:29:46,063 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 96 [2018-07-25 13:29:46,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:46,064 INFO L225 Difference]: With dead ends: 105 [2018-07-25 13:29:46,064 INFO L226 Difference]: Without dead ends: 103 [2018-07-25 13:29:46,065 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1002, Invalid=1650, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 13:29:46,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-07-25 13:29:46,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 99. [2018-07-25 13:29:46,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-07-25 13:29:46,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2018-07-25 13:29:46,093 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 96 [2018-07-25 13:29:46,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:46,094 INFO L472 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2018-07-25 13:29:46,094 INFO L473 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-25 13:29:46,094 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2018-07-25 13:29:46,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-07-25 13:29:46,095 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:46,095 INFO L354 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 1, 1, 1, 1] [2018-07-25 13:29:46,095 INFO L415 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:46,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1221367523, now seen corresponding path program 45 times [2018-07-25 13:29:46,095 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:46,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:46,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 552 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:46,312 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:46,312 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-07-25 13:29:46,313 INFO L451 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-07-25 13:29:46,313 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-07-25 13:29:46,314 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=649, Invalid=1801, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 13:29:46,314 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand 50 states. [2018-07-25 13:29:46,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:46,700 INFO L93 Difference]: Finished difference Result 152 states and 154 transitions. [2018-07-25 13:29:46,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-07-25 13:29:46,700 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 98 [2018-07-25 13:29:46,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:46,701 INFO L225 Difference]: With dead ends: 152 [2018-07-25 13:29:46,701 INFO L226 Difference]: Without dead ends: 101 [2018-07-25 13:29:46,703 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 805 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1297, Invalid=4105, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 13:29:46,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-07-25 13:29:46,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-07-25 13:29:46,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-07-25 13:29:46,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 102 transitions. [2018-07-25 13:29:46,732 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 102 transitions. Word has length 98 [2018-07-25 13:29:46,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:46,732 INFO L472 AbstractCegarLoop]: Abstraction has 101 states and 102 transitions. [2018-07-25 13:29:46,732 INFO L473 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-07-25 13:29:46,732 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 102 transitions. [2018-07-25 13:29:46,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-07-25 13:29:46,733 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:46,733 INFO L354 BasicCegarLoop]: trace histogram [25, 24, 24, 23, 1, 1, 1, 1] [2018-07-25 13:29:46,734 INFO L415 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:46,734 INFO L82 PathProgramCache]: Analyzing trace with hash -99845347, now seen corresponding path program 46 times [2018-07-25 13:29:46,734 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:46,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:46,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 600 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:46,853 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:46,853 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-07-25 13:29:46,854 INFO L451 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-07-25 13:29:46,854 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-07-25 13:29:46,854 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2018-07-25 13:29:46,855 INFO L87 Difference]: Start difference. First operand 101 states and 102 transitions. Second operand 29 states. [2018-07-25 13:29:47,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:47,013 INFO L93 Difference]: Finished difference Result 109 states and 110 transitions. [2018-07-25 13:29:47,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-07-25 13:29:47,013 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 100 [2018-07-25 13:29:47,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:47,014 INFO L225 Difference]: With dead ends: 109 [2018-07-25 13:29:47,014 INFO L226 Difference]: Without dead ends: 107 [2018-07-25 13:29:47,016 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1081, Invalid=1781, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 13:29:47,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-07-25 13:29:47,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 103. [2018-07-25 13:29:47,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-07-25 13:29:47,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2018-07-25 13:29:47,048 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 100 [2018-07-25 13:29:47,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:47,049 INFO L472 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2018-07-25 13:29:47,049 INFO L473 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-07-25 13:29:47,049 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2018-07-25 13:29:47,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-07-25 13:29:47,050 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:47,050 INFO L354 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 1, 1, 1, 1] [2018-07-25 13:29:47,051 INFO L415 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:47,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1462164711, now seen corresponding path program 47 times [2018-07-25 13:29:47,051 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:47,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:47,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 600 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:47,276 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:47,277 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-25 13:29:47,277 INFO L451 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-25 13:29:47,277 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-25 13:29:47,278 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 13:29:47,278 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand 52 states. [2018-07-25 13:29:47,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:47,617 INFO L93 Difference]: Finished difference Result 158 states and 160 transitions. [2018-07-25 13:29:47,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-07-25 13:29:47,617 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 102 [2018-07-25 13:29:47,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:47,619 INFO L225 Difference]: With dead ends: 158 [2018-07-25 13:29:47,619 INFO L226 Difference]: Without dead ends: 105 [2018-07-25 13:29:47,620 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1401, Invalid=4451, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 13:29:47,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-07-25 13:29:47,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-07-25 13:29:47,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-07-25 13:29:47,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions. [2018-07-25 13:29:47,650 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 102 [2018-07-25 13:29:47,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:47,651 INFO L472 AbstractCegarLoop]: Abstraction has 105 states and 106 transitions. [2018-07-25 13:29:47,651 INFO L473 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-25 13:29:47,651 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 106 transitions. [2018-07-25 13:29:47,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-07-25 13:29:47,652 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:47,652 INFO L354 BasicCegarLoop]: trace histogram [26, 25, 25, 24, 1, 1, 1, 1] [2018-07-25 13:29:47,652 INFO L415 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:47,653 INFO L82 PathProgramCache]: Analyzing trace with hash 850942547, now seen corresponding path program 48 times [2018-07-25 13:29:47,653 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:47,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:47,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1250 backedges. 650 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:47,778 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:47,778 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-07-25 13:29:47,779 INFO L451 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-07-25 13:29:47,779 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-07-25 13:29:47,779 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2018-07-25 13:29:47,780 INFO L87 Difference]: Start difference. First operand 105 states and 106 transitions. Second operand 30 states. [2018-07-25 13:29:47,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:47,943 INFO L93 Difference]: Finished difference Result 113 states and 114 transitions. [2018-07-25 13:29:47,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-07-25 13:29:47,944 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 104 [2018-07-25 13:29:47,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:47,945 INFO L225 Difference]: With dead ends: 113 [2018-07-25 13:29:47,945 INFO L226 Difference]: Without dead ends: 111 [2018-07-25 13:29:47,946 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1163, Invalid=1917, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 13:29:47,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-07-25 13:29:47,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 107. [2018-07-25 13:29:47,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-07-25 13:29:47,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 108 transitions. [2018-07-25 13:29:47,986 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 108 transitions. Word has length 104 [2018-07-25 13:29:47,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:47,986 INFO L472 AbstractCegarLoop]: Abstraction has 107 states and 108 transitions. [2018-07-25 13:29:47,986 INFO L473 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-07-25 13:29:47,986 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 108 transitions. [2018-07-25 13:29:47,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-07-25 13:29:47,988 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:47,988 INFO L354 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 1, 1, 1, 1] [2018-07-25 13:29:47,988 INFO L415 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:47,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1711934671, now seen corresponding path program 49 times [2018-07-25 13:29:47,989 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:48,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:48,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 650 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:48,260 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:48,261 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-07-25 13:29:48,261 INFO L451 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-07-25 13:29:48,262 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-07-25 13:29:48,262 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=755, Invalid=2107, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 13:29:48,263 INFO L87 Difference]: Start difference. First operand 107 states and 108 transitions. Second operand 54 states. [2018-07-25 13:29:48,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:48,709 INFO L93 Difference]: Finished difference Result 164 states and 166 transitions. [2018-07-25 13:29:48,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-07-25 13:29:48,710 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 106 [2018-07-25 13:29:48,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:48,711 INFO L225 Difference]: With dead ends: 164 [2018-07-25 13:29:48,711 INFO L226 Difference]: Without dead ends: 109 [2018-07-25 13:29:48,712 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=1509, Invalid=4811, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 13:29:48,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-07-25 13:29:48,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-07-25 13:29:48,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-07-25 13:29:48,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 110 transitions. [2018-07-25 13:29:48,747 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 110 transitions. Word has length 106 [2018-07-25 13:29:48,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:48,747 INFO L472 AbstractCegarLoop]: Abstraction has 109 states and 110 transitions. [2018-07-25 13:29:48,747 INFO L473 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-07-25 13:29:48,747 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 110 transitions. [2018-07-25 13:29:48,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-07-25 13:29:48,748 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:48,749 INFO L354 BasicCegarLoop]: trace histogram [27, 26, 26, 25, 1, 1, 1, 1] [2018-07-25 13:29:48,749 INFO L415 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:48,749 INFO L82 PathProgramCache]: Analyzing trace with hash -223930615, now seen corresponding path program 50 times [2018-07-25 13:29:48,749 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:48,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:48,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1352 backedges. 702 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:48,873 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:48,874 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-07-25 13:29:48,874 INFO L451 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-07-25 13:29:48,874 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-07-25 13:29:48,875 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2018-07-25 13:29:48,875 INFO L87 Difference]: Start difference. First operand 109 states and 110 transitions. Second operand 31 states. [2018-07-25 13:29:49,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:49,027 INFO L93 Difference]: Finished difference Result 117 states and 118 transitions. [2018-07-25 13:29:49,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-07-25 13:29:49,028 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 108 [2018-07-25 13:29:49,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:49,029 INFO L225 Difference]: With dead ends: 117 [2018-07-25 13:29:49,029 INFO L226 Difference]: Without dead ends: 115 [2018-07-25 13:29:49,030 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 729 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1248, Invalid=2058, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 13:29:49,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-07-25 13:29:49,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 111. [2018-07-25 13:29:49,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-07-25 13:29:49,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2018-07-25 13:29:49,064 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 108 [2018-07-25 13:29:49,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:49,064 INFO L472 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2018-07-25 13:29:49,065 INFO L473 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-07-25 13:29:49,065 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2018-07-25 13:29:49,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-07-25 13:29:49,066 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:49,066 INFO L354 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 1, 1, 1, 1] [2018-07-25 13:29:49,066 INFO L415 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:49,066 INFO L82 PathProgramCache]: Analyzing trace with hash -449022971, now seen corresponding path program 51 times [2018-07-25 13:29:49,066 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:49,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:49,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 702 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:49,289 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:49,289 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-25 13:29:49,290 INFO L451 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-25 13:29:49,290 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-25 13:29:49,291 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=811, Invalid=2269, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 13:29:49,291 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand 56 states. [2018-07-25 13:29:49,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:49,705 INFO L93 Difference]: Finished difference Result 170 states and 172 transitions. [2018-07-25 13:29:49,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-07-25 13:29:49,705 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 110 [2018-07-25 13:29:49,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:49,706 INFO L225 Difference]: With dead ends: 170 [2018-07-25 13:29:49,706 INFO L226 Difference]: Without dead ends: 113 [2018-07-25 13:29:49,708 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1027 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1621, Invalid=5185, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 13:29:49,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-07-25 13:29:49,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-07-25 13:29:49,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-07-25 13:29:49,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 114 transitions. [2018-07-25 13:29:49,741 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 114 transitions. Word has length 110 [2018-07-25 13:29:49,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:49,741 INFO L472 AbstractCegarLoop]: Abstraction has 113 states and 114 transitions. [2018-07-25 13:29:49,741 INFO L473 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-25 13:29:49,741 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 114 transitions. [2018-07-25 13:29:49,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-07-25 13:29:49,742 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:49,742 INFO L354 BasicCegarLoop]: trace histogram [28, 27, 27, 26, 1, 1, 1, 1] [2018-07-25 13:29:49,743 INFO L415 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:49,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1802883391, now seen corresponding path program 52 times [2018-07-25 13:29:49,743 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:49,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:49,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 756 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:49,870 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:49,871 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-25 13:29:49,871 INFO L451 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-25 13:29:49,871 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-25 13:29:49,871 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2018-07-25 13:29:49,872 INFO L87 Difference]: Start difference. First operand 113 states and 114 transitions. Second operand 32 states. [2018-07-25 13:29:50,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:50,030 INFO L93 Difference]: Finished difference Result 121 states and 122 transitions. [2018-07-25 13:29:50,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-07-25 13:29:50,030 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 112 [2018-07-25 13:29:50,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:50,031 INFO L225 Difference]: With dead ends: 121 [2018-07-25 13:29:50,031 INFO L226 Difference]: Without dead ends: 119 [2018-07-25 13:29:50,032 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1336, Invalid=2204, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 13:29:50,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-07-25 13:29:50,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 115. [2018-07-25 13:29:50,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-07-25 13:29:50,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 116 transitions. [2018-07-25 13:29:50,068 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 116 transitions. Word has length 112 [2018-07-25 13:29:50,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:50,069 INFO L472 AbstractCegarLoop]: Abstraction has 115 states and 116 transitions. [2018-07-25 13:29:50,069 INFO L473 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-25 13:29:50,069 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 116 transitions. [2018-07-25 13:29:50,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-07-25 13:29:50,070 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:50,070 INFO L354 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 1, 1, 1, 1] [2018-07-25 13:29:50,070 INFO L415 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:50,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1699051707, now seen corresponding path program 53 times [2018-07-25 13:29:50,071 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:50,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:50,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 756 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:50,290 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:50,291 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-07-25 13:29:50,291 INFO L451 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-07-25 13:29:50,291 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-07-25 13:29:50,292 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=869, Invalid=2437, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 13:29:50,292 INFO L87 Difference]: Start difference. First operand 115 states and 116 transitions. Second operand 58 states. [2018-07-25 13:29:50,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:50,651 INFO L93 Difference]: Finished difference Result 176 states and 178 transitions. [2018-07-25 13:29:50,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-07-25 13:29:50,652 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 114 [2018-07-25 13:29:50,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:50,653 INFO L225 Difference]: With dead ends: 176 [2018-07-25 13:29:50,653 INFO L226 Difference]: Without dead ends: 117 [2018-07-25 13:29:50,655 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1107 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1737, Invalid=5573, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 13:29:50,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-07-25 13:29:50,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-07-25 13:29:50,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-07-25 13:29:50,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 118 transitions. [2018-07-25 13:29:50,687 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 118 transitions. Word has length 114 [2018-07-25 13:29:50,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:50,687 INFO L472 AbstractCegarLoop]: Abstraction has 117 states and 118 transitions. [2018-07-25 13:29:50,687 INFO L473 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-07-25 13:29:50,687 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 118 transitions. [2018-07-25 13:29:50,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-07-25 13:29:50,688 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:50,688 INFO L354 BasicCegarLoop]: trace histogram [29, 28, 28, 27, 1, 1, 1, 1] [2018-07-25 13:29:50,689 INFO L415 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:50,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1220126965, now seen corresponding path program 54 times [2018-07-25 13:29:50,689 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:50,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:50,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 812 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:50,818 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:50,818 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-07-25 13:29:50,818 INFO L451 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-07-25 13:29:50,819 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-07-25 13:29:50,819 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 13:29:50,819 INFO L87 Difference]: Start difference. First operand 117 states and 118 transitions. Second operand 33 states. [2018-07-25 13:29:50,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:50,978 INFO L93 Difference]: Finished difference Result 125 states and 126 transitions. [2018-07-25 13:29:50,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-07-25 13:29:50,978 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 116 [2018-07-25 13:29:50,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:50,979 INFO L225 Difference]: With dead ends: 125 [2018-07-25 13:29:50,979 INFO L226 Difference]: Without dead ends: 123 [2018-07-25 13:29:50,980 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 841 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1427, Invalid=2355, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 13:29:50,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-07-25 13:29:51,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2018-07-25 13:29:51,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-07-25 13:29:51,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 120 transitions. [2018-07-25 13:29:51,013 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 120 transitions. Word has length 116 [2018-07-25 13:29:51,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:51,013 INFO L472 AbstractCegarLoop]: Abstraction has 119 states and 120 transitions. [2018-07-25 13:29:51,013 INFO L473 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-07-25 13:29:51,013 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 120 transitions. [2018-07-25 13:29:51,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-07-25 13:29:51,015 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:51,015 INFO L354 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 1, 1, 1, 1] [2018-07-25 13:29:51,015 INFO L415 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:51,015 INFO L82 PathProgramCache]: Analyzing trace with hash 15874801, now seen corresponding path program 55 times [2018-07-25 13:29:51,015 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:51,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:51,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 812 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:51,250 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:51,250 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-25 13:29:51,250 INFO L451 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-25 13:29:51,251 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-25 13:29:51,251 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=929, Invalid=2611, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 13:29:51,252 INFO L87 Difference]: Start difference. First operand 119 states and 120 transitions. Second operand 60 states. [2018-07-25 13:29:51,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:51,617 INFO L93 Difference]: Finished difference Result 182 states and 184 transitions. [2018-07-25 13:29:51,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-07-25 13:29:51,617 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 118 [2018-07-25 13:29:51,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:51,618 INFO L225 Difference]: With dead ends: 182 [2018-07-25 13:29:51,618 INFO L226 Difference]: Without dead ends: 121 [2018-07-25 13:29:51,620 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1190 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1857, Invalid=5975, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 13:29:51,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-07-25 13:29:51,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-07-25 13:29:51,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-07-25 13:29:51,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 122 transitions. [2018-07-25 13:29:51,653 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 122 transitions. Word has length 118 [2018-07-25 13:29:51,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:51,653 INFO L472 AbstractCegarLoop]: Abstraction has 121 states and 122 transitions. [2018-07-25 13:29:51,653 INFO L473 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-25 13:29:51,653 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 122 transitions. [2018-07-25 13:29:51,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-07-25 13:29:51,654 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:51,655 INFO L354 BasicCegarLoop]: trace histogram [30, 29, 29, 28, 1, 1, 1, 1] [2018-07-25 13:29:51,655 INFO L415 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:51,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1308639701, now seen corresponding path program 56 times [2018-07-25 13:29:51,655 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:51,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:51,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 870 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:51,842 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:51,842 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-07-25 13:29:51,843 INFO L451 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-07-25 13:29:51,843 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-07-25 13:29:51,843 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 13:29:51,844 INFO L87 Difference]: Start difference. First operand 121 states and 122 transitions. Second operand 34 states. [2018-07-25 13:29:51,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:51,995 INFO L93 Difference]: Finished difference Result 129 states and 130 transitions. [2018-07-25 13:29:51,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-07-25 13:29:51,996 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 120 [2018-07-25 13:29:51,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:51,997 INFO L225 Difference]: With dead ends: 129 [2018-07-25 13:29:51,997 INFO L226 Difference]: Without dead ends: 127 [2018-07-25 13:29:51,998 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 900 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1521, Invalid=2511, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 13:29:51,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-07-25 13:29:52,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 123. [2018-07-25 13:29:52,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-07-25 13:29:52,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 124 transitions. [2018-07-25 13:29:52,033 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 124 transitions. Word has length 120 [2018-07-25 13:29:52,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:52,033 INFO L472 AbstractCegarLoop]: Abstraction has 123 states and 124 transitions. [2018-07-25 13:29:52,033 INFO L473 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-07-25 13:29:52,033 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 124 transitions. [2018-07-25 13:29:52,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-07-25 13:29:52,034 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:52,035 INFO L354 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 1, 1, 1, 1] [2018-07-25 13:29:52,035 INFO L415 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:52,035 INFO L82 PathProgramCache]: Analyzing trace with hash 822598311, now seen corresponding path program 57 times [2018-07-25 13:29:52,035 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:52,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:52,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 870 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:52,263 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:52,263 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-07-25 13:29:52,264 INFO L451 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-07-25 13:29:52,264 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-07-25 13:29:52,265 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=991, Invalid=2791, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 13:29:52,265 INFO L87 Difference]: Start difference. First operand 123 states and 124 transitions. Second operand 62 states. [2018-07-25 13:29:52,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:52,720 INFO L93 Difference]: Finished difference Result 188 states and 190 transitions. [2018-07-25 13:29:52,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-07-25 13:29:52,721 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 122 [2018-07-25 13:29:52,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:52,722 INFO L225 Difference]: With dead ends: 188 [2018-07-25 13:29:52,722 INFO L226 Difference]: Without dead ends: 125 [2018-07-25 13:29:52,723 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1276 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1981, Invalid=6391, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 13:29:52,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-07-25 13:29:52,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-07-25 13:29:52,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-07-25 13:29:52,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 126 transitions. [2018-07-25 13:29:52,756 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 126 transitions. Word has length 122 [2018-07-25 13:29:52,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:52,756 INFO L472 AbstractCegarLoop]: Abstraction has 125 states and 126 transitions. [2018-07-25 13:29:52,756 INFO L473 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-07-25 13:29:52,756 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 126 transitions. [2018-07-25 13:29:52,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-07-25 13:29:52,757 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:52,758 INFO L354 BasicCegarLoop]: trace histogram [31, 30, 30, 29, 1, 1, 1, 1] [2018-07-25 13:29:52,758 INFO L415 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:52,758 INFO L82 PathProgramCache]: Analyzing trace with hash -858967839, now seen corresponding path program 58 times [2018-07-25 13:29:52,758 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:52,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:52,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 930 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:52,886 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:52,886 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-07-25 13:29:52,887 INFO L451 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-07-25 13:29:52,887 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-07-25 13:29:52,887 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 13:29:52,888 INFO L87 Difference]: Start difference. First operand 125 states and 126 transitions. Second operand 35 states. [2018-07-25 13:29:53,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:53,055 INFO L93 Difference]: Finished difference Result 133 states and 134 transitions. [2018-07-25 13:29:53,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-07-25 13:29:53,055 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 124 [2018-07-25 13:29:53,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:53,056 INFO L225 Difference]: With dead ends: 133 [2018-07-25 13:29:53,056 INFO L226 Difference]: Without dead ends: 131 [2018-07-25 13:29:53,057 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 961 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1618, Invalid=2672, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 13:29:53,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-07-25 13:29:53,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 127. [2018-07-25 13:29:53,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-07-25 13:29:53,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2018-07-25 13:29:53,099 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 124 [2018-07-25 13:29:53,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:53,100 INFO L472 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions. [2018-07-25 13:29:53,100 INFO L473 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-07-25 13:29:53,100 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions. [2018-07-25 13:29:53,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-07-25 13:29:53,101 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:53,102 INFO L354 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 1, 1, 1, 1] [2018-07-25 13:29:53,102 INFO L415 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:53,102 INFO L82 PathProgramCache]: Analyzing trace with hash -834439203, now seen corresponding path program 59 times [2018-07-25 13:29:53,102 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:53,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:53,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 930 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:53,343 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:53,343 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-25 13:29:53,344 INFO L451 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-25 13:29:53,344 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-25 13:29:53,345 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1055, Invalid=2977, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 13:29:53,345 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand 64 states. [2018-07-25 13:29:53,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:53,748 INFO L93 Difference]: Finished difference Result 194 states and 196 transitions. [2018-07-25 13:29:53,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-07-25 13:29:53,749 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 126 [2018-07-25 13:29:53,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:53,750 INFO L225 Difference]: With dead ends: 194 [2018-07-25 13:29:53,750 INFO L226 Difference]: Without dead ends: 129 [2018-07-25 13:29:53,753 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1365 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2109, Invalid=6821, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 13:29:53,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-07-25 13:29:53,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-07-25 13:29:53,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-07-25 13:29:53,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 130 transitions. [2018-07-25 13:29:53,796 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 130 transitions. Word has length 126 [2018-07-25 13:29:53,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:53,796 INFO L472 AbstractCegarLoop]: Abstraction has 129 states and 130 transitions. [2018-07-25 13:29:53,796 INFO L473 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-25 13:29:53,796 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 130 transitions. [2018-07-25 13:29:53,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-07-25 13:29:53,797 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:53,798 INFO L354 BasicCegarLoop]: trace histogram [32, 31, 31, 30, 1, 1, 1, 1] [2018-07-25 13:29:53,798 INFO L415 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:53,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1096867561, now seen corresponding path program 60 times [2018-07-25 13:29:53,798 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:53,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:53,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1922 backedges. 992 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:53,947 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:53,947 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-25 13:29:53,948 INFO L451 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-25 13:29:53,948 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-25 13:29:53,948 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 13:29:53,949 INFO L87 Difference]: Start difference. First operand 129 states and 130 transitions. Second operand 36 states. [2018-07-25 13:29:54,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:54,124 INFO L93 Difference]: Finished difference Result 137 states and 138 transitions. [2018-07-25 13:29:54,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-07-25 13:29:54,124 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 128 [2018-07-25 13:29:54,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:54,125 INFO L225 Difference]: With dead ends: 137 [2018-07-25 13:29:54,126 INFO L226 Difference]: Without dead ends: 135 [2018-07-25 13:29:54,127 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1024 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1718, Invalid=2838, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 13:29:54,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-07-25 13:29:54,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 131. [2018-07-25 13:29:54,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-07-25 13:29:54,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 132 transitions. [2018-07-25 13:29:54,166 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 132 transitions. Word has length 128 [2018-07-25 13:29:54,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:54,167 INFO L472 AbstractCegarLoop]: Abstraction has 131 states and 132 transitions. [2018-07-25 13:29:54,167 INFO L473 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-25 13:29:54,167 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 132 transitions. [2018-07-25 13:29:54,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-07-25 13:29:54,168 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:54,168 INFO L354 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 1, 1, 1, 1] [2018-07-25 13:29:54,168 INFO L415 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:54,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1822805357, now seen corresponding path program 61 times [2018-07-25 13:29:54,169 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:54,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:54,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 992 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:54,417 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:54,417 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-07-25 13:29:54,417 INFO L451 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-07-25 13:29:54,418 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-07-25 13:29:54,419 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1121, Invalid=3169, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 13:29:54,420 INFO L87 Difference]: Start difference. First operand 131 states and 132 transitions. Second operand 66 states. [2018-07-25 13:29:54,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:54,879 INFO L93 Difference]: Finished difference Result 200 states and 202 transitions. [2018-07-25 13:29:54,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-07-25 13:29:54,880 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 130 [2018-07-25 13:29:54,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:54,881 INFO L225 Difference]: With dead ends: 200 [2018-07-25 13:29:54,881 INFO L226 Difference]: Without dead ends: 133 [2018-07-25 13:29:54,883 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1457 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=2241, Invalid=7265, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 13:29:54,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-07-25 13:29:54,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-07-25 13:29:54,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-07-25 13:29:54,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 134 transitions. [2018-07-25 13:29:54,935 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 134 transitions. Word has length 130 [2018-07-25 13:29:54,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:54,935 INFO L472 AbstractCegarLoop]: Abstraction has 133 states and 134 transitions. [2018-07-25 13:29:54,936 INFO L473 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-07-25 13:29:54,936 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 134 transitions. [2018-07-25 13:29:54,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-07-25 13:29:54,939 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:54,939 INFO L354 BasicCegarLoop]: trace histogram [33, 32, 32, 31, 1, 1, 1, 1] [2018-07-25 13:29:54,940 INFO L415 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:54,940 INFO L82 PathProgramCache]: Analyzing trace with hash 787132109, now seen corresponding path program 62 times [2018-07-25 13:29:54,940 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:54,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:55,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2048 backedges. 1056 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:55,132 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:55,132 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-07-25 13:29:55,132 INFO L451 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-07-25 13:29:55,133 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-07-25 13:29:55,133 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 13:29:55,137 INFO L87 Difference]: Start difference. First operand 133 states and 134 transitions. Second operand 37 states. [2018-07-25 13:29:55,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:55,417 INFO L93 Difference]: Finished difference Result 141 states and 142 transitions. [2018-07-25 13:29:55,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-07-25 13:29:55,417 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 132 [2018-07-25 13:29:55,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:55,418 INFO L225 Difference]: With dead ends: 141 [2018-07-25 13:29:55,418 INFO L226 Difference]: Without dead ends: 139 [2018-07-25 13:29:55,419 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1089 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1821, Invalid=3009, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 13:29:55,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-07-25 13:29:55,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 135. [2018-07-25 13:29:55,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-07-25 13:29:55,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 136 transitions. [2018-07-25 13:29:55,464 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 136 transitions. Word has length 132 [2018-07-25 13:29:55,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:55,464 INFO L472 AbstractCegarLoop]: Abstraction has 135 states and 136 transitions. [2018-07-25 13:29:55,465 INFO L473 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-07-25 13:29:55,465 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 136 transitions. [2018-07-25 13:29:55,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-07-25 13:29:55,467 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:55,467 INFO L354 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 1, 1, 1, 1] [2018-07-25 13:29:55,467 INFO L415 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:55,468 INFO L82 PathProgramCache]: Analyzing trace with hash 519645897, now seen corresponding path program 63 times [2018-07-25 13:29:55,468 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:55,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:55,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 1056 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:55,729 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:55,729 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-25 13:29:55,729 INFO L451 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-25 13:29:55,730 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-25 13:29:55,730 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1189, Invalid=3367, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 13:29:55,731 INFO L87 Difference]: Start difference. First operand 135 states and 136 transitions. Second operand 68 states. [2018-07-25 13:29:56,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:56,241 INFO L93 Difference]: Finished difference Result 206 states and 208 transitions. [2018-07-25 13:29:56,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-07-25 13:29:56,241 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 134 [2018-07-25 13:29:56,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:56,242 INFO L225 Difference]: With dead ends: 206 [2018-07-25 13:29:56,242 INFO L226 Difference]: Without dead ends: 137 [2018-07-25 13:29:56,244 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1552 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=2377, Invalid=7723, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 13:29:56,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-07-25 13:29:56,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-07-25 13:29:56,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-07-25 13:29:56,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 138 transitions. [2018-07-25 13:29:56,283 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 138 transitions. Word has length 134 [2018-07-25 13:29:56,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:56,284 INFO L472 AbstractCegarLoop]: Abstraction has 137 states and 138 transitions. [2018-07-25 13:29:56,284 INFO L473 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-25 13:29:56,284 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 138 transitions. [2018-07-25 13:29:56,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-07-25 13:29:56,285 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:56,285 INFO L354 BasicCegarLoop]: trace histogram [34, 33, 33, 32, 1, 1, 1, 1] [2018-07-25 13:29:56,285 INFO L415 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:56,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1226635779, now seen corresponding path program 64 times [2018-07-25 13:29:56,286 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:56,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:56,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2178 backedges. 1122 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:56,424 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:56,424 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-07-25 13:29:56,424 INFO L451 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-07-25 13:29:56,425 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-07-25 13:29:56,425 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 13:29:56,425 INFO L87 Difference]: Start difference. First operand 137 states and 138 transitions. Second operand 38 states. [2018-07-25 13:29:56,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:56,596 INFO L93 Difference]: Finished difference Result 145 states and 146 transitions. [2018-07-25 13:29:56,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-07-25 13:29:56,596 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 136 [2018-07-25 13:29:56,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:56,597 INFO L225 Difference]: With dead ends: 145 [2018-07-25 13:29:56,598 INFO L226 Difference]: Without dead ends: 143 [2018-07-25 13:29:56,599 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1156 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1927, Invalid=3185, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 13:29:56,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-07-25 13:29:56,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 139. [2018-07-25 13:29:56,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-07-25 13:29:56,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 140 transitions. [2018-07-25 13:29:56,638 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 140 transitions. Word has length 136 [2018-07-25 13:29:56,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:56,638 INFO L472 AbstractCegarLoop]: Abstraction has 139 states and 140 transitions. [2018-07-25 13:29:56,638 INFO L473 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-07-25 13:29:56,639 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 140 transitions. [2018-07-25 13:29:56,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-07-25 13:29:56,640 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:56,640 INFO L354 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 1, 1, 1, 1] [2018-07-25 13:29:56,640 INFO L415 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:56,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1975877759, now seen corresponding path program 65 times [2018-07-25 13:29:56,641 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:56,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:56,887 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1122 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:56,887 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:56,888 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-07-25 13:29:56,888 INFO L451 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-07-25 13:29:56,888 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-07-25 13:29:56,889 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1259, Invalid=3571, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 13:29:56,889 INFO L87 Difference]: Start difference. First operand 139 states and 140 transitions. Second operand 70 states. [2018-07-25 13:29:57,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:57,374 INFO L93 Difference]: Finished difference Result 212 states and 214 transitions. [2018-07-25 13:29:57,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-07-25 13:29:57,374 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 138 [2018-07-25 13:29:57,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:57,376 INFO L225 Difference]: With dead ends: 212 [2018-07-25 13:29:57,376 INFO L226 Difference]: Without dead ends: 141 [2018-07-25 13:29:57,378 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1650 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=2517, Invalid=8195, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 13:29:57,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-07-25 13:29:57,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-07-25 13:29:57,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-07-25 13:29:57,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 142 transitions. [2018-07-25 13:29:57,421 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 142 transitions. Word has length 138 [2018-07-25 13:29:57,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:57,421 INFO L472 AbstractCegarLoop]: Abstraction has 141 states and 142 transitions. [2018-07-25 13:29:57,421 INFO L473 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-07-25 13:29:57,421 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 142 transitions. [2018-07-25 13:29:57,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-07-25 13:29:57,423 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:57,423 INFO L354 BasicCegarLoop]: trace histogram [35, 34, 34, 33, 1, 1, 1, 1] [2018-07-25 13:29:57,423 INFO L415 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:57,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1050354361, now seen corresponding path program 66 times [2018-07-25 13:29:57,423 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:57,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:57,571 INFO L134 CoverageAnalysis]: Checked inductivity of 2312 backedges. 1190 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:57,572 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:57,572 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-07-25 13:29:57,572 INFO L451 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-07-25 13:29:57,573 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-07-25 13:29:57,573 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 13:29:57,573 INFO L87 Difference]: Start difference. First operand 141 states and 142 transitions. Second operand 39 states. [2018-07-25 13:29:57,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:57,757 INFO L93 Difference]: Finished difference Result 149 states and 150 transitions. [2018-07-25 13:29:57,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-07-25 13:29:57,758 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 140 [2018-07-25 13:29:57,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:57,759 INFO L225 Difference]: With dead ends: 149 [2018-07-25 13:29:57,759 INFO L226 Difference]: Without dead ends: 147 [2018-07-25 13:29:57,762 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1225 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2036, Invalid=3366, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 13:29:57,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-07-25 13:29:57,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 143. [2018-07-25 13:29:57,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-07-25 13:29:57,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 144 transitions. [2018-07-25 13:29:57,807 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 144 transitions. Word has length 140 [2018-07-25 13:29:57,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:57,807 INFO L472 AbstractCegarLoop]: Abstraction has 143 states and 144 transitions. [2018-07-25 13:29:57,808 INFO L473 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-07-25 13:29:57,808 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 144 transitions. [2018-07-25 13:29:57,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-07-25 13:29:57,810 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:57,810 INFO L354 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 1, 1, 1, 1] [2018-07-25 13:29:57,810 INFO L415 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:57,811 INFO L82 PathProgramCache]: Analyzing trace with hash 73159605, now seen corresponding path program 67 times [2018-07-25 13:29:57,811 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:57,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:58,092 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 1190 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:58,095 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:58,096 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-25 13:29:58,096 INFO L451 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-25 13:29:58,097 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-25 13:29:58,097 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1331, Invalid=3781, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 13:29:58,098 INFO L87 Difference]: Start difference. First operand 143 states and 144 transitions. Second operand 72 states. [2018-07-25 13:29:58,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:58,585 INFO L93 Difference]: Finished difference Result 218 states and 220 transitions. [2018-07-25 13:29:58,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-07-25 13:29:58,585 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 142 [2018-07-25 13:29:58,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:58,586 INFO L225 Difference]: With dead ends: 218 [2018-07-25 13:29:58,587 INFO L226 Difference]: Without dead ends: 145 [2018-07-25 13:29:58,589 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1751 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=2661, Invalid=8681, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 13:29:58,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-07-25 13:29:58,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-07-25 13:29:58,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-07-25 13:29:58,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 146 transitions. [2018-07-25 13:29:58,637 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 146 transitions. Word has length 142 [2018-07-25 13:29:58,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:58,638 INFO L472 AbstractCegarLoop]: Abstraction has 145 states and 146 transitions. [2018-07-25 13:29:58,638 INFO L473 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-25 13:29:58,638 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 146 transitions. [2018-07-25 13:29:58,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-07-25 13:29:58,639 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:58,639 INFO L354 BasicCegarLoop]: trace histogram [36, 35, 35, 34, 1, 1, 1, 1] [2018-07-25 13:29:58,640 INFO L415 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:58,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1220692207, now seen corresponding path program 68 times [2018-07-25 13:29:58,640 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:58,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:58,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 1260 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:58,834 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:58,835 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-25 13:29:58,835 INFO L451 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-25 13:29:58,839 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-25 13:29:58,839 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 13:29:58,840 INFO L87 Difference]: Start difference. First operand 145 states and 146 transitions. Second operand 40 states. [2018-07-25 13:29:59,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:59,008 INFO L93 Difference]: Finished difference Result 153 states and 154 transitions. [2018-07-25 13:29:59,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-07-25 13:29:59,009 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 144 [2018-07-25 13:29:59,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:59,010 INFO L225 Difference]: With dead ends: 153 [2018-07-25 13:29:59,010 INFO L226 Difference]: Without dead ends: 151 [2018-07-25 13:29:59,013 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1296 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2148, Invalid=3552, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 13:29:59,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-07-25 13:29:59,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 147. [2018-07-25 13:29:59,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-07-25 13:29:59,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 148 transitions. [2018-07-25 13:29:59,058 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 148 transitions. Word has length 144 [2018-07-25 13:29:59,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:59,059 INFO L472 AbstractCegarLoop]: Abstraction has 147 states and 148 transitions. [2018-07-25 13:29:59,059 INFO L473 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-25 13:29:59,059 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 148 transitions. [2018-07-25 13:29:59,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-07-25 13:29:59,060 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:59,060 INFO L354 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 1, 1, 1, 1] [2018-07-25 13:29:59,060 INFO L415 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:59,061 INFO L82 PathProgramCache]: Analyzing trace with hash 559072363, now seen corresponding path program 69 times [2018-07-25 13:29:59,061 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:59,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:59,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 1260 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:59,324 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:59,324 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-07-25 13:29:59,324 INFO L451 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-07-25 13:29:59,325 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-07-25 13:29:59,326 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1405, Invalid=3997, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 13:29:59,326 INFO L87 Difference]: Start difference. First operand 147 states and 148 transitions. Second operand 74 states. [2018-07-25 13:29:59,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:59,876 INFO L93 Difference]: Finished difference Result 224 states and 226 transitions. [2018-07-25 13:29:59,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-07-25 13:29:59,876 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 146 [2018-07-25 13:29:59,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:59,878 INFO L225 Difference]: With dead ends: 224 [2018-07-25 13:29:59,878 INFO L226 Difference]: Without dead ends: 149 [2018-07-25 13:29:59,880 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1855 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=2809, Invalid=9181, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 13:29:59,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-07-25 13:29:59,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-07-25 13:29:59,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-07-25 13:29:59,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 150 transitions. [2018-07-25 13:29:59,924 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 150 transitions. Word has length 146 [2018-07-25 13:29:59,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:59,925 INFO L472 AbstractCegarLoop]: Abstraction has 149 states and 150 transitions. [2018-07-25 13:29:59,925 INFO L473 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-07-25 13:29:59,925 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 150 transitions. [2018-07-25 13:29:59,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-07-25 13:29:59,926 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:59,926 INFO L354 BasicCegarLoop]: trace histogram [37, 36, 36, 35, 1, 1, 1, 1] [2018-07-25 13:29:59,927 INFO L415 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:59,927 INFO L82 PathProgramCache]: Analyzing trace with hash 719817893, now seen corresponding path program 70 times [2018-07-25 13:29:59,927 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:59,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:00,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2592 backedges. 1332 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:00,070 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:00,071 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-07-25 13:30:00,071 INFO L451 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-07-25 13:30:00,071 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-07-25 13:30:00,072 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 13:30:00,072 INFO L87 Difference]: Start difference. First operand 149 states and 150 transitions. Second operand 41 states. [2018-07-25 13:30:00,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:00,259 INFO L93 Difference]: Finished difference Result 157 states and 158 transitions. [2018-07-25 13:30:00,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-07-25 13:30:00,259 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 148 [2018-07-25 13:30:00,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:00,261 INFO L225 Difference]: With dead ends: 157 [2018-07-25 13:30:00,261 INFO L226 Difference]: Without dead ends: 155 [2018-07-25 13:30:00,262 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1369 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2263, Invalid=3743, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 13:30:00,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-07-25 13:30:00,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 151. [2018-07-25 13:30:00,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-07-25 13:30:00,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2018-07-25 13:30:00,316 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 148 [2018-07-25 13:30:00,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:00,316 INFO L472 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2018-07-25 13:30:00,316 INFO L473 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-07-25 13:30:00,316 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2018-07-25 13:30:00,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-07-25 13:30:00,317 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:00,318 INFO L354 BasicCegarLoop]: trace histogram [37, 37, 36, 36, 1, 1, 1, 1] [2018-07-25 13:30:00,318 INFO L415 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:00,318 INFO L82 PathProgramCache]: Analyzing trace with hash 255193761, now seen corresponding path program 71 times [2018-07-25 13:30:00,318 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:00,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:00,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 1332 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:00,623 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:00,624 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-25 13:30:00,624 INFO L451 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-25 13:30:00,625 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-25 13:30:00,626 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1481, Invalid=4219, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 13:30:00,626 INFO L87 Difference]: Start difference. First operand 151 states and 152 transitions. Second operand 76 states. [2018-07-25 13:30:01,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:01,169 INFO L93 Difference]: Finished difference Result 230 states and 232 transitions. [2018-07-25 13:30:01,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-07-25 13:30:01,169 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 150 [2018-07-25 13:30:01,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:01,171 INFO L225 Difference]: With dead ends: 230 [2018-07-25 13:30:01,171 INFO L226 Difference]: Without dead ends: 153 [2018-07-25 13:30:01,173 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1962 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=2961, Invalid=9695, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 13:30:01,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-07-25 13:30:01,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-07-25 13:30:01,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-07-25 13:30:01,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 154 transitions. [2018-07-25 13:30:01,218 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 154 transitions. Word has length 150 [2018-07-25 13:30:01,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:01,218 INFO L472 AbstractCegarLoop]: Abstraction has 153 states and 154 transitions. [2018-07-25 13:30:01,218 INFO L473 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-25 13:30:01,219 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 154 transitions. [2018-07-25 13:30:01,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-07-25 13:30:01,219 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:01,219 INFO L354 BasicCegarLoop]: trace histogram [38, 37, 37, 36, 1, 1, 1, 1] [2018-07-25 13:30:01,220 INFO L415 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:01,220 INFO L82 PathProgramCache]: Analyzing trace with hash 878185947, now seen corresponding path program 72 times [2018-07-25 13:30:01,220 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:01,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:01,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2738 backedges. 1406 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:01,369 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:01,369 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-07-25 13:30:01,369 INFO L451 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-07-25 13:30:01,369 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-07-25 13:30:01,370 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 13:30:01,370 INFO L87 Difference]: Start difference. First operand 153 states and 154 transitions. Second operand 42 states. [2018-07-25 13:30:01,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:01,542 INFO L93 Difference]: Finished difference Result 161 states and 162 transitions. [2018-07-25 13:30:01,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-07-25 13:30:01,543 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 152 [2018-07-25 13:30:01,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:01,544 INFO L225 Difference]: With dead ends: 161 [2018-07-25 13:30:01,544 INFO L226 Difference]: Without dead ends: 159 [2018-07-25 13:30:01,545 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1444 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2381, Invalid=3939, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 13:30:01,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-07-25 13:30:01,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 155. [2018-07-25 13:30:01,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-07-25 13:30:01,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 156 transitions. [2018-07-25 13:30:01,592 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 156 transitions. Word has length 152 [2018-07-25 13:30:01,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:01,593 INFO L472 AbstractCegarLoop]: Abstraction has 155 states and 156 transitions. [2018-07-25 13:30:01,593 INFO L473 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-07-25 13:30:01,593 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 156 transitions. [2018-07-25 13:30:01,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-07-25 13:30:01,594 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:01,594 INFO L354 BasicCegarLoop]: trace histogram [38, 38, 37, 37, 1, 1, 1, 1] [2018-07-25 13:30:01,594 INFO L415 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:01,595 INFO L82 PathProgramCache]: Analyzing trace with hash 2123038295, now seen corresponding path program 73 times [2018-07-25 13:30:01,595 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:01,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:01,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 1406 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:01,983 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:01,983 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-07-25 13:30:01,984 INFO L451 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-07-25 13:30:01,984 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-07-25 13:30:01,985 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1559, Invalid=4447, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 13:30:01,985 INFO L87 Difference]: Start difference. First operand 155 states and 156 transitions. Second operand 78 states. [2018-07-25 13:30:02,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:02,653 INFO L93 Difference]: Finished difference Result 236 states and 238 transitions. [2018-07-25 13:30:02,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-07-25 13:30:02,653 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 154 [2018-07-25 13:30:02,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:02,654 INFO L225 Difference]: With dead ends: 236 [2018-07-25 13:30:02,654 INFO L226 Difference]: Without dead ends: 157 [2018-07-25 13:30:02,655 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2072 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3117, Invalid=10223, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 13:30:02,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-07-25 13:30:02,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-07-25 13:30:02,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-07-25 13:30:02,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 158 transitions. [2018-07-25 13:30:02,697 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 158 transitions. Word has length 154 [2018-07-25 13:30:02,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:02,697 INFO L472 AbstractCegarLoop]: Abstraction has 157 states and 158 transitions. [2018-07-25 13:30:02,697 INFO L473 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-07-25 13:30:02,698 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 158 transitions. [2018-07-25 13:30:02,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-07-25 13:30:02,699 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:02,699 INFO L354 BasicCegarLoop]: trace histogram [39, 38, 38, 37, 1, 1, 1, 1] [2018-07-25 13:30:02,699 INFO L415 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:02,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1034359663, now seen corresponding path program 74 times [2018-07-25 13:30:02,699 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:02,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:02,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2888 backedges. 1482 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:02,856 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:02,856 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-07-25 13:30:02,856 INFO L451 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-07-25 13:30:02,857 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-07-25 13:30:02,857 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 13:30:02,857 INFO L87 Difference]: Start difference. First operand 157 states and 158 transitions. Second operand 43 states. [2018-07-25 13:30:03,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:03,005 INFO L93 Difference]: Finished difference Result 165 states and 166 transitions. [2018-07-25 13:30:03,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-07-25 13:30:03,005 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 156 [2018-07-25 13:30:03,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:03,007 INFO L225 Difference]: With dead ends: 165 [2018-07-25 13:30:03,007 INFO L226 Difference]: Without dead ends: 163 [2018-07-25 13:30:03,008 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1521 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2502, Invalid=4140, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 13:30:03,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-07-25 13:30:03,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 159. [2018-07-25 13:30:03,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-07-25 13:30:03,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 160 transitions. [2018-07-25 13:30:03,053 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 160 transitions. Word has length 156 [2018-07-25 13:30:03,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:03,054 INFO L472 AbstractCegarLoop]: Abstraction has 159 states and 160 transitions. [2018-07-25 13:30:03,054 INFO L473 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-07-25 13:30:03,054 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 160 transitions. [2018-07-25 13:30:03,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-07-25 13:30:03,055 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:03,055 INFO L354 BasicCegarLoop]: trace histogram [39, 39, 38, 38, 1, 1, 1, 1] [2018-07-25 13:30:03,055 INFO L415 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:03,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1882257523, now seen corresponding path program 75 times [2018-07-25 13:30:03,056 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:03,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:03,333 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 1482 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:03,334 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:03,334 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-25 13:30:03,335 INFO L451 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-25 13:30:03,335 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-25 13:30:03,336 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1639, Invalid=4681, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 13:30:03,336 INFO L87 Difference]: Start difference. First operand 159 states and 160 transitions. Second operand 80 states. [2018-07-25 13:30:03,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:03,917 INFO L93 Difference]: Finished difference Result 242 states and 244 transitions. [2018-07-25 13:30:03,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-07-25 13:30:03,917 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 158 [2018-07-25 13:30:03,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:03,919 INFO L225 Difference]: With dead ends: 242 [2018-07-25 13:30:03,919 INFO L226 Difference]: Without dead ends: 161 [2018-07-25 13:30:03,921 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2185 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3277, Invalid=10765, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 13:30:03,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-07-25 13:30:03,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-07-25 13:30:03,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-07-25 13:30:03,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 162 transitions. [2018-07-25 13:30:03,980 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 162 transitions. Word has length 158 [2018-07-25 13:30:03,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:03,980 INFO L472 AbstractCegarLoop]: Abstraction has 161 states and 162 transitions. [2018-07-25 13:30:03,980 INFO L473 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-25 13:30:03,980 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 162 transitions. [2018-07-25 13:30:03,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-07-25 13:30:03,981 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:03,982 INFO L354 BasicCegarLoop]: trace histogram [40, 39, 39, 38, 1, 1, 1, 1] [2018-07-25 13:30:03,982 INFO L415 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:03,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1109870791, now seen corresponding path program 76 times [2018-07-25 13:30:03,982 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:04,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:04,153 INFO L134 CoverageAnalysis]: Checked inductivity of 3042 backedges. 1560 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:04,153 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:04,153 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-25 13:30:04,154 INFO L451 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-25 13:30:04,154 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-25 13:30:04,154 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 13:30:04,155 INFO L87 Difference]: Start difference. First operand 161 states and 162 transitions. Second operand 44 states. [2018-07-25 13:30:04,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:04,353 INFO L93 Difference]: Finished difference Result 169 states and 170 transitions. [2018-07-25 13:30:04,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-07-25 13:30:04,353 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 160 [2018-07-25 13:30:04,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:04,355 INFO L225 Difference]: With dead ends: 169 [2018-07-25 13:30:04,355 INFO L226 Difference]: Without dead ends: 167 [2018-07-25 13:30:04,356 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1600 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2626, Invalid=4346, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 13:30:04,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-07-25 13:30:04,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 163. [2018-07-25 13:30:04,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-07-25 13:30:04,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 164 transitions. [2018-07-25 13:30:04,416 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 164 transitions. Word has length 160 [2018-07-25 13:30:04,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:04,416 INFO L472 AbstractCegarLoop]: Abstraction has 163 states and 164 transitions. [2018-07-25 13:30:04,416 INFO L473 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-25 13:30:04,417 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 164 transitions. [2018-07-25 13:30:04,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-07-25 13:30:04,417 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:04,418 INFO L354 BasicCegarLoop]: trace histogram [40, 40, 39, 39, 1, 1, 1, 1] [2018-07-25 13:30:04,418 INFO L415 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:04,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1433873987, now seen corresponding path program 77 times [2018-07-25 13:30:04,418 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:04,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:04,752 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1560 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:04,752 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:04,752 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-07-25 13:30:04,753 INFO L451 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-07-25 13:30:04,753 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-07-25 13:30:04,754 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1721, Invalid=4921, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 13:30:04,754 INFO L87 Difference]: Start difference. First operand 163 states and 164 transitions. Second operand 82 states. [2018-07-25 13:30:05,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:05,410 INFO L93 Difference]: Finished difference Result 248 states and 250 transitions. [2018-07-25 13:30:05,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-07-25 13:30:05,410 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 162 [2018-07-25 13:30:05,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:05,411 INFO L225 Difference]: With dead ends: 248 [2018-07-25 13:30:05,411 INFO L226 Difference]: Without dead ends: 165 [2018-07-25 13:30:05,413 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2301 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3441, Invalid=11321, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 13:30:05,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-07-25 13:30:05,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-07-25 13:30:05,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-07-25 13:30:05,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 166 transitions. [2018-07-25 13:30:05,452 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 166 transitions. Word has length 162 [2018-07-25 13:30:05,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:05,453 INFO L472 AbstractCegarLoop]: Abstraction has 165 states and 166 transitions. [2018-07-25 13:30:05,453 INFO L473 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-07-25 13:30:05,453 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 166 transitions. [2018-07-25 13:30:05,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-07-25 13:30:05,454 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:05,454 INFO L354 BasicCegarLoop]: trace histogram [41, 40, 40, 39, 1, 1, 1, 1] [2018-07-25 13:30:05,454 INFO L415 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:05,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1292352899, now seen corresponding path program 78 times [2018-07-25 13:30:05,455 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:05,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:05,624 INFO L134 CoverageAnalysis]: Checked inductivity of 3200 backedges. 1640 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:05,625 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:05,625 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-07-25 13:30:05,625 INFO L451 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-07-25 13:30:05,626 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-07-25 13:30:05,626 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 13:30:05,626 INFO L87 Difference]: Start difference. First operand 165 states and 166 transitions. Second operand 45 states. [2018-07-25 13:30:05,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:05,782 INFO L93 Difference]: Finished difference Result 173 states and 174 transitions. [2018-07-25 13:30:05,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-07-25 13:30:05,783 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 164 [2018-07-25 13:30:05,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:05,784 INFO L225 Difference]: With dead ends: 173 [2018-07-25 13:30:05,784 INFO L226 Difference]: Without dead ends: 171 [2018-07-25 13:30:05,785 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1681 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2753, Invalid=4557, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 13:30:05,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-07-25 13:30:05,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 167. [2018-07-25 13:30:05,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-07-25 13:30:05,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 168 transitions. [2018-07-25 13:30:05,835 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 168 transitions. Word has length 164 [2018-07-25 13:30:05,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:05,835 INFO L472 AbstractCegarLoop]: Abstraction has 167 states and 168 transitions. [2018-07-25 13:30:05,835 INFO L473 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-07-25 13:30:05,835 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 168 transitions. [2018-07-25 13:30:05,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-07-25 13:30:05,836 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:05,836 INFO L354 BasicCegarLoop]: trace histogram [41, 41, 40, 40, 1, 1, 1, 1] [2018-07-25 13:30:05,836 INFO L415 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:05,837 INFO L82 PathProgramCache]: Analyzing trace with hash -705654151, now seen corresponding path program 79 times [2018-07-25 13:30:05,837 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:05,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:06,096 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 1640 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:06,096 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:06,096 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-07-25 13:30:06,097 INFO L451 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-07-25 13:30:06,097 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-07-25 13:30:06,098 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1805, Invalid=5167, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 13:30:06,098 INFO L87 Difference]: Start difference. First operand 167 states and 168 transitions. Second operand 84 states. [2018-07-25 13:30:06,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:06,621 INFO L93 Difference]: Finished difference Result 254 states and 256 transitions. [2018-07-25 13:30:06,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-07-25 13:30:06,621 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 166 [2018-07-25 13:30:06,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:06,622 INFO L225 Difference]: With dead ends: 254 [2018-07-25 13:30:06,622 INFO L226 Difference]: Without dead ends: 169 [2018-07-25 13:30:06,624 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2420 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3609, Invalid=11891, Unknown=0, NotChecked=0, Total=15500 [2018-07-25 13:30:06,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-07-25 13:30:06,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-07-25 13:30:06,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-07-25 13:30:06,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 170 transitions. [2018-07-25 13:30:06,672 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 170 transitions. Word has length 166 [2018-07-25 13:30:06,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:06,672 INFO L472 AbstractCegarLoop]: Abstraction has 169 states and 170 transitions. [2018-07-25 13:30:06,672 INFO L473 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-07-25 13:30:06,672 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 170 transitions. [2018-07-25 13:30:06,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-07-25 13:30:06,673 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:06,673 INFO L354 BasicCegarLoop]: trace histogram [42, 41, 41, 40, 1, 1, 1, 1] [2018-07-25 13:30:06,673 INFO L415 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:06,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1476855373, now seen corresponding path program 80 times [2018-07-25 13:30:06,674 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:06,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:06,845 INFO L134 CoverageAnalysis]: Checked inductivity of 3362 backedges. 1722 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:06,845 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:06,845 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-07-25 13:30:06,846 INFO L451 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-07-25 13:30:06,846 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-07-25 13:30:06,846 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 13:30:06,847 INFO L87 Difference]: Start difference. First operand 169 states and 170 transitions. Second operand 46 states. [2018-07-25 13:30:07,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:07,047 INFO L93 Difference]: Finished difference Result 177 states and 178 transitions. [2018-07-25 13:30:07,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-07-25 13:30:07,047 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 168 [2018-07-25 13:30:07,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:07,049 INFO L225 Difference]: With dead ends: 177 [2018-07-25 13:30:07,049 INFO L226 Difference]: Without dead ends: 175 [2018-07-25 13:30:07,050 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1764 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2883, Invalid=4773, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 13:30:07,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-07-25 13:30:07,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 171. [2018-07-25 13:30:07,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-07-25 13:30:07,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 172 transitions. [2018-07-25 13:30:07,094 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 172 transitions. Word has length 168 [2018-07-25 13:30:07,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:07,094 INFO L472 AbstractCegarLoop]: Abstraction has 171 states and 172 transitions. [2018-07-25 13:30:07,094 INFO L473 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-07-25 13:30:07,094 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 172 transitions. [2018-07-25 13:30:07,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-07-25 13:30:07,095 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:07,095 INFO L354 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 1, 1, 1, 1] [2018-07-25 13:30:07,095 INFO L415 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:07,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1918872529, now seen corresponding path program 81 times [2018-07-25 13:30:07,095 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:07,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:07,325 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 1722 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:07,326 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:07,326 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-07-25 13:30:07,326 INFO L451 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-07-25 13:30:07,327 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-07-25 13:30:07,327 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=5419, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 13:30:07,327 INFO L87 Difference]: Start difference. First operand 171 states and 172 transitions. Second operand 86 states. [2018-07-25 13:30:07,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:07,860 INFO L93 Difference]: Finished difference Result 260 states and 262 transitions. [2018-07-25 13:30:07,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-07-25 13:30:07,861 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 170 [2018-07-25 13:30:07,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:07,862 INFO L225 Difference]: With dead ends: 260 [2018-07-25 13:30:07,862 INFO L226 Difference]: Without dead ends: 173 [2018-07-25 13:30:07,863 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2542 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3781, Invalid=12475, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 13:30:07,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-07-25 13:30:07,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-07-25 13:30:07,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-07-25 13:30:07,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 174 transitions. [2018-07-25 13:30:07,905 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 174 transitions. Word has length 170 [2018-07-25 13:30:07,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:07,905 INFO L472 AbstractCegarLoop]: Abstraction has 173 states and 174 transitions. [2018-07-25 13:30:07,905 INFO L473 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-07-25 13:30:07,905 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 174 transitions. [2018-07-25 13:30:07,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-07-25 13:30:07,906 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:07,906 INFO L354 BasicCegarLoop]: trace histogram [43, 42, 42, 41, 1, 1, 1, 1] [2018-07-25 13:30:07,906 INFO L415 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:07,906 INFO L82 PathProgramCache]: Analyzing trace with hash -900821399, now seen corresponding path program 82 times [2018-07-25 13:30:07,906 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:07,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:08,050 INFO L134 CoverageAnalysis]: Checked inductivity of 3528 backedges. 1806 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:08,051 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:08,051 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-07-25 13:30:08,051 INFO L451 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-07-25 13:30:08,051 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-07-25 13:30:08,052 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 13:30:08,052 INFO L87 Difference]: Start difference. First operand 173 states and 174 transitions. Second operand 47 states. [2018-07-25 13:30:08,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:08,252 INFO L93 Difference]: Finished difference Result 181 states and 182 transitions. [2018-07-25 13:30:08,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-07-25 13:30:08,252 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 172 [2018-07-25 13:30:08,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:08,253 INFO L225 Difference]: With dead ends: 181 [2018-07-25 13:30:08,253 INFO L226 Difference]: Without dead ends: 179 [2018-07-25 13:30:08,254 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1849 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3016, Invalid=4994, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 13:30:08,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-07-25 13:30:08,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 175. [2018-07-25 13:30:08,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-07-25 13:30:08,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 176 transitions. [2018-07-25 13:30:08,297 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 176 transitions. Word has length 172 [2018-07-25 13:30:08,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:08,298 INFO L472 AbstractCegarLoop]: Abstraction has 175 states and 176 transitions. [2018-07-25 13:30:08,298 INFO L473 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-07-25 13:30:08,298 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 176 transitions. [2018-07-25 13:30:08,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-07-25 13:30:08,299 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:08,299 INFO L354 BasicCegarLoop]: trace histogram [43, 43, 42, 42, 1, 1, 1, 1] [2018-07-25 13:30:08,299 INFO L415 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:08,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1893962597, now seen corresponding path program 83 times [2018-07-25 13:30:08,299 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:08,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:08,546 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 1806 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:08,546 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:08,546 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-07-25 13:30:08,547 INFO L451 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-07-25 13:30:08,547 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-07-25 13:30:08,548 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1979, Invalid=5677, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 13:30:08,548 INFO L87 Difference]: Start difference. First operand 175 states and 176 transitions. Second operand 88 states. [2018-07-25 13:30:09,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:09,240 INFO L93 Difference]: Finished difference Result 266 states and 268 transitions. [2018-07-25 13:30:09,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-07-25 13:30:09,241 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 174 [2018-07-25 13:30:09,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:09,242 INFO L225 Difference]: With dead ends: 266 [2018-07-25 13:30:09,242 INFO L226 Difference]: Without dead ends: 177 [2018-07-25 13:30:09,243 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2667 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3957, Invalid=13073, Unknown=0, NotChecked=0, Total=17030 [2018-07-25 13:30:09,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-07-25 13:30:09,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-07-25 13:30:09,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-07-25 13:30:09,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 178 transitions. [2018-07-25 13:30:09,287 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 178 transitions. Word has length 174 [2018-07-25 13:30:09,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:09,287 INFO L472 AbstractCegarLoop]: Abstraction has 177 states and 178 transitions. [2018-07-25 13:30:09,287 INFO L473 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-07-25 13:30:09,287 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 178 transitions. [2018-07-25 13:30:09,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-07-25 13:30:09,288 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:09,288 INFO L354 BasicCegarLoop]: trace histogram [44, 43, 43, 42, 1, 1, 1, 1] [2018-07-25 13:30:09,288 INFO L415 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:09,289 INFO L82 PathProgramCache]: Analyzing trace with hash -619306849, now seen corresponding path program 84 times [2018-07-25 13:30:09,289 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:09,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:09,427 INFO L134 CoverageAnalysis]: Checked inductivity of 3698 backedges. 1892 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:09,427 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:09,427 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-25 13:30:09,427 INFO L451 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-25 13:30:09,428 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-25 13:30:09,428 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 13:30:09,428 INFO L87 Difference]: Start difference. First operand 177 states and 178 transitions. Second operand 48 states. [2018-07-25 13:30:09,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:09,577 INFO L93 Difference]: Finished difference Result 185 states and 186 transitions. [2018-07-25 13:30:09,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-07-25 13:30:09,577 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 176 [2018-07-25 13:30:09,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:09,578 INFO L225 Difference]: With dead ends: 185 [2018-07-25 13:30:09,578 INFO L226 Difference]: Without dead ends: 183 [2018-07-25 13:30:09,579 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1936 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3152, Invalid=5220, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 13:30:09,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-07-25 13:30:09,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 179. [2018-07-25 13:30:09,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-07-25 13:30:09,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 180 transitions. [2018-07-25 13:30:09,624 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 180 transitions. Word has length 176 [2018-07-25 13:30:09,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:09,625 INFO L472 AbstractCegarLoop]: Abstraction has 179 states and 180 transitions. [2018-07-25 13:30:09,625 INFO L473 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-25 13:30:09,625 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 180 transitions. [2018-07-25 13:30:09,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-07-25 13:30:09,626 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:09,626 INFO L354 BasicCegarLoop]: trace histogram [44, 44, 43, 43, 1, 1, 1, 1] [2018-07-25 13:30:09,627 INFO L415 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:09,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1846505499, now seen corresponding path program 85 times [2018-07-25 13:30:09,627 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:09,894 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1892 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:09,895 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:09,895 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-07-25 13:30:09,895 INFO L451 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-07-25 13:30:09,896 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-07-25 13:30:09,897 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2069, Invalid=5941, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 13:30:09,897 INFO L87 Difference]: Start difference. First operand 179 states and 180 transitions. Second operand 90 states. [2018-07-25 13:30:10,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:10,578 INFO L93 Difference]: Finished difference Result 272 states and 274 transitions. [2018-07-25 13:30:10,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-07-25 13:30:10,578 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 178 [2018-07-25 13:30:10,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:10,579 INFO L225 Difference]: With dead ends: 272 [2018-07-25 13:30:10,579 INFO L226 Difference]: Without dead ends: 181 [2018-07-25 13:30:10,581 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2795 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=4137, Invalid=13685, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 13:30:10,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-07-25 13:30:10,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-07-25 13:30:10,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-07-25 13:30:10,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 182 transitions. [2018-07-25 13:30:10,632 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 182 transitions. Word has length 178 [2018-07-25 13:30:10,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:10,632 INFO L472 AbstractCegarLoop]: Abstraction has 181 states and 182 transitions. [2018-07-25 13:30:10,632 INFO L473 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-07-25 13:30:10,632 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 182 transitions. [2018-07-25 13:30:10,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-07-25 13:30:10,633 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:10,633 INFO L354 BasicCegarLoop]: trace histogram [45, 44, 44, 43, 1, 1, 1, 1] [2018-07-25 13:30:10,633 INFO L415 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:10,633 INFO L82 PathProgramCache]: Analyzing trace with hash 895799381, now seen corresponding path program 86 times [2018-07-25 13:30:10,633 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:10,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:10,782 INFO L134 CoverageAnalysis]: Checked inductivity of 3872 backedges. 1980 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:10,782 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:10,783 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-07-25 13:30:10,783 INFO L451 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-07-25 13:30:10,783 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-07-25 13:30:10,783 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 13:30:10,784 INFO L87 Difference]: Start difference. First operand 181 states and 182 transitions. Second operand 49 states. [2018-07-25 13:30:10,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:10,946 INFO L93 Difference]: Finished difference Result 189 states and 190 transitions. [2018-07-25 13:30:10,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-07-25 13:30:10,946 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 180 [2018-07-25 13:30:10,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:10,947 INFO L225 Difference]: With dead ends: 189 [2018-07-25 13:30:10,947 INFO L226 Difference]: Without dead ends: 187 [2018-07-25 13:30:10,948 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2025 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3291, Invalid=5451, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 13:30:10,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-07-25 13:30:11,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 183. [2018-07-25 13:30:11,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-07-25 13:30:11,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 184 transitions. [2018-07-25 13:30:11,007 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 184 transitions. Word has length 180 [2018-07-25 13:30:11,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:11,007 INFO L472 AbstractCegarLoop]: Abstraction has 183 states and 184 transitions. [2018-07-25 13:30:11,008 INFO L473 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-07-25 13:30:11,008 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 184 transitions. [2018-07-25 13:30:11,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-07-25 13:30:11,009 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:11,009 INFO L354 BasicCegarLoop]: trace histogram [45, 45, 44, 44, 1, 1, 1, 1] [2018-07-25 13:30:11,009 INFO L415 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:11,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1869679185, now seen corresponding path program 87 times [2018-07-25 13:30:11,009 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:11,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:11,277 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 1980 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:11,278 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:11,278 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-07-25 13:30:11,278 INFO L451 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-07-25 13:30:11,279 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-07-25 13:30:11,279 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2161, Invalid=6211, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 13:30:11,280 INFO L87 Difference]: Start difference. First operand 183 states and 184 transitions. Second operand 92 states. [2018-07-25 13:30:11,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:11,955 INFO L93 Difference]: Finished difference Result 278 states and 280 transitions. [2018-07-25 13:30:11,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-07-25 13:30:11,956 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 182 [2018-07-25 13:30:11,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:11,957 INFO L225 Difference]: With dead ends: 278 [2018-07-25 13:30:11,957 INFO L226 Difference]: Without dead ends: 185 [2018-07-25 13:30:11,959 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2926 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=4321, Invalid=14311, Unknown=0, NotChecked=0, Total=18632 [2018-07-25 13:30:11,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-07-25 13:30:12,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-07-25 13:30:12,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-07-25 13:30:12,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 186 transitions. [2018-07-25 13:30:12,010 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 186 transitions. Word has length 182 [2018-07-25 13:30:12,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:12,011 INFO L472 AbstractCegarLoop]: Abstraction has 185 states and 186 transitions. [2018-07-25 13:30:12,011 INFO L473 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-07-25 13:30:12,011 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 186 transitions. [2018-07-25 13:30:12,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-07-25 13:30:12,012 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:12,012 INFO L354 BasicCegarLoop]: trace histogram [46, 45, 45, 44, 1, 1, 1, 1] [2018-07-25 13:30:12,013 INFO L415 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:12,013 INFO L82 PathProgramCache]: Analyzing trace with hash -800604789, now seen corresponding path program 88 times [2018-07-25 13:30:12,013 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:12,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:12,184 INFO L134 CoverageAnalysis]: Checked inductivity of 4050 backedges. 2070 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:12,184 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:12,184 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-07-25 13:30:12,185 INFO L451 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-07-25 13:30:12,185 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-07-25 13:30:12,185 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 13:30:12,185 INFO L87 Difference]: Start difference. First operand 185 states and 186 transitions. Second operand 50 states. [2018-07-25 13:30:12,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:12,383 INFO L93 Difference]: Finished difference Result 193 states and 194 transitions. [2018-07-25 13:30:12,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-07-25 13:30:12,384 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 184 [2018-07-25 13:30:12,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:12,385 INFO L225 Difference]: With dead ends: 193 [2018-07-25 13:30:12,385 INFO L226 Difference]: Without dead ends: 191 [2018-07-25 13:30:12,386 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2116 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3433, Invalid=5687, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 13:30:12,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-07-25 13:30:12,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 187. [2018-07-25 13:30:12,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-07-25 13:30:12,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 188 transitions. [2018-07-25 13:30:12,442 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 188 transitions. Word has length 184 [2018-07-25 13:30:12,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:12,442 INFO L472 AbstractCegarLoop]: Abstraction has 187 states and 188 transitions. [2018-07-25 13:30:12,442 INFO L473 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-07-25 13:30:12,442 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 188 transitions. [2018-07-25 13:30:12,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-07-25 13:30:12,443 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:12,443 INFO L354 BasicCegarLoop]: trace histogram [46, 46, 45, 45, 1, 1, 1, 1] [2018-07-25 13:30:12,443 INFO L415 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:12,443 INFO L82 PathProgramCache]: Analyzing trace with hash -582123001, now seen corresponding path program 89 times [2018-07-25 13:30:12,443 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:12,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:12,706 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 2070 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:12,706 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:12,706 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-07-25 13:30:12,707 INFO L451 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-07-25 13:30:12,707 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-07-25 13:30:12,708 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2255, Invalid=6487, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 13:30:12,708 INFO L87 Difference]: Start difference. First operand 187 states and 188 transitions. Second operand 94 states. [2018-07-25 13:30:13,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:13,334 INFO L93 Difference]: Finished difference Result 284 states and 286 transitions. [2018-07-25 13:30:13,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-07-25 13:30:13,334 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 186 [2018-07-25 13:30:13,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:13,335 INFO L225 Difference]: With dead ends: 284 [2018-07-25 13:30:13,335 INFO L226 Difference]: Without dead ends: 189 [2018-07-25 13:30:13,337 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3060 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=4509, Invalid=14951, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 13:30:13,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-07-25 13:30:13,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-07-25 13:30:13,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-07-25 13:30:13,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 190 transitions. [2018-07-25 13:30:13,386 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 190 transitions. Word has length 186 [2018-07-25 13:30:13,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:13,386 INFO L472 AbstractCegarLoop]: Abstraction has 189 states and 190 transitions. [2018-07-25 13:30:13,386 INFO L473 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-07-25 13:30:13,386 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 190 transitions. [2018-07-25 13:30:13,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-07-25 13:30:13,387 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:13,387 INFO L354 BasicCegarLoop]: trace histogram [47, 46, 46, 45, 1, 1, 1, 1] [2018-07-25 13:30:13,387 INFO L415 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:13,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1060894655, now seen corresponding path program 90 times [2018-07-25 13:30:13,387 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:13,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:13,563 INFO L134 CoverageAnalysis]: Checked inductivity of 4232 backedges. 2162 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:13,563 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:13,563 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-07-25 13:30:13,564 INFO L451 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-07-25 13:30:13,564 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-07-25 13:30:13,564 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 13:30:13,564 INFO L87 Difference]: Start difference. First operand 189 states and 190 transitions. Second operand 51 states. [2018-07-25 13:30:13,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:13,773 INFO L93 Difference]: Finished difference Result 197 states and 198 transitions. [2018-07-25 13:30:13,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-07-25 13:30:13,773 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 188 [2018-07-25 13:30:13,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:13,774 INFO L225 Difference]: With dead ends: 197 [2018-07-25 13:30:13,774 INFO L226 Difference]: Without dead ends: 195 [2018-07-25 13:30:13,775 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2209 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3578, Invalid=5928, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 13:30:13,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-07-25 13:30:13,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 191. [2018-07-25 13:30:13,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-07-25 13:30:13,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 192 transitions. [2018-07-25 13:30:13,826 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 192 transitions. Word has length 188 [2018-07-25 13:30:13,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:13,826 INFO L472 AbstractCegarLoop]: Abstraction has 191 states and 192 transitions. [2018-07-25 13:30:13,826 INFO L473 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-07-25 13:30:13,826 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 192 transitions. [2018-07-25 13:30:13,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-07-25 13:30:13,827 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:13,827 INFO L354 BasicCegarLoop]: trace histogram [47, 47, 46, 46, 1, 1, 1, 1] [2018-07-25 13:30:13,827 INFO L415 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:13,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1612581059, now seen corresponding path program 91 times [2018-07-25 13:30:13,828 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:13,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:14,113 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 2162 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:14,114 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:14,114 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-07-25 13:30:14,114 INFO L451 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-07-25 13:30:14,114 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-07-25 13:30:14,115 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2351, Invalid=6769, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 13:30:14,115 INFO L87 Difference]: Start difference. First operand 191 states and 192 transitions. Second operand 96 states. [2018-07-25 13:30:14,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:14,795 INFO L93 Difference]: Finished difference Result 290 states and 292 transitions. [2018-07-25 13:30:14,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-07-25 13:30:14,795 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 190 [2018-07-25 13:30:14,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:14,796 INFO L225 Difference]: With dead ends: 290 [2018-07-25 13:30:14,796 INFO L226 Difference]: Without dead ends: 193 [2018-07-25 13:30:14,798 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3197 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=4701, Invalid=15605, Unknown=0, NotChecked=0, Total=20306 [2018-07-25 13:30:14,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-07-25 13:30:14,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-07-25 13:30:14,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-07-25 13:30:14,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 194 transitions. [2018-07-25 13:30:14,848 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 194 transitions. Word has length 190 [2018-07-25 13:30:14,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:14,849 INFO L472 AbstractCegarLoop]: Abstraction has 193 states and 194 transitions. [2018-07-25 13:30:14,849 INFO L473 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-07-25 13:30:14,849 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 194 transitions. [2018-07-25 13:30:14,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-07-25 13:30:14,849 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:14,850 INFO L354 BasicCegarLoop]: trace histogram [48, 47, 47, 46, 1, 1, 1, 1] [2018-07-25 13:30:14,850 INFO L415 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:14,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1003933815, now seen corresponding path program 92 times [2018-07-25 13:30:14,850 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:15,016 INFO L134 CoverageAnalysis]: Checked inductivity of 4418 backedges. 2256 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:15,017 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:15,017 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-25 13:30:15,017 INFO L451 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-25 13:30:15,018 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-25 13:30:15,018 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 13:30:15,018 INFO L87 Difference]: Start difference. First operand 193 states and 194 transitions. Second operand 52 states. [2018-07-25 13:30:15,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:15,208 INFO L93 Difference]: Finished difference Result 201 states and 202 transitions. [2018-07-25 13:30:15,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-07-25 13:30:15,208 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 192 [2018-07-25 13:30:15,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:15,209 INFO L225 Difference]: With dead ends: 201 [2018-07-25 13:30:15,209 INFO L226 Difference]: Without dead ends: 199 [2018-07-25 13:30:15,210 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2304 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3726, Invalid=6174, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 13:30:15,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-07-25 13:30:15,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 195. [2018-07-25 13:30:15,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-07-25 13:30:15,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 196 transitions. [2018-07-25 13:30:15,272 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 196 transitions. Word has length 192 [2018-07-25 13:30:15,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:15,273 INFO L472 AbstractCegarLoop]: Abstraction has 195 states and 196 transitions. [2018-07-25 13:30:15,273 INFO L473 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-25 13:30:15,273 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 196 transitions. [2018-07-25 13:30:15,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-07-25 13:30:15,274 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:15,275 INFO L354 BasicCegarLoop]: trace histogram [48, 48, 47, 47, 1, 1, 1, 1] [2018-07-25 13:30:15,275 INFO L415 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:15,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1587312141, now seen corresponding path program 93 times [2018-07-25 13:30:15,276 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:15,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:15,736 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 2256 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:15,737 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:15,737 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-07-25 13:30:15,737 INFO L451 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-07-25 13:30:15,738 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-07-25 13:30:15,738 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2449, Invalid=7057, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 13:30:15,739 INFO L87 Difference]: Start difference. First operand 195 states and 196 transitions. Second operand 98 states. [2018-07-25 13:30:16,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:16,425 INFO L93 Difference]: Finished difference Result 296 states and 298 transitions. [2018-07-25 13:30:16,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-07-25 13:30:16,425 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 194 [2018-07-25 13:30:16,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:16,426 INFO L225 Difference]: With dead ends: 296 [2018-07-25 13:30:16,426 INFO L226 Difference]: Without dead ends: 197 [2018-07-25 13:30:16,427 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3337 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=4897, Invalid=16273, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 13:30:16,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-07-25 13:30:16,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-07-25 13:30:16,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-07-25 13:30:16,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 198 transitions. [2018-07-25 13:30:16,478 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 198 transitions. Word has length 194 [2018-07-25 13:30:16,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:16,478 INFO L472 AbstractCegarLoop]: Abstraction has 197 states and 198 transitions. [2018-07-25 13:30:16,478 INFO L473 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-07-25 13:30:16,478 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 198 transitions. [2018-07-25 13:30:16,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-07-25 13:30:16,479 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:16,479 INFO L354 BasicCegarLoop]: trace histogram [49, 48, 48, 47, 1, 1, 1, 1] [2018-07-25 13:30:16,479 INFO L415 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:16,479 INFO L82 PathProgramCache]: Analyzing trace with hash 410334765, now seen corresponding path program 94 times [2018-07-25 13:30:16,480 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:16,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:16,644 INFO L134 CoverageAnalysis]: Checked inductivity of 4608 backedges. 2352 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:16,645 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:16,645 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-07-25 13:30:16,645 INFO L451 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-07-25 13:30:16,646 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-07-25 13:30:16,646 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 13:30:16,646 INFO L87 Difference]: Start difference. First operand 197 states and 198 transitions. Second operand 53 states. [2018-07-25 13:30:16,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:16,819 INFO L93 Difference]: Finished difference Result 205 states and 206 transitions. [2018-07-25 13:30:16,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-07-25 13:30:16,819 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 196 [2018-07-25 13:30:16,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:16,820 INFO L225 Difference]: With dead ends: 205 [2018-07-25 13:30:16,820 INFO L226 Difference]: Without dead ends: 203 [2018-07-25 13:30:16,821 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2401 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3877, Invalid=6425, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 13:30:16,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-07-25 13:30:16,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 199. [2018-07-25 13:30:16,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-07-25 13:30:16,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 200 transitions. [2018-07-25 13:30:16,879 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 200 transitions. Word has length 196 [2018-07-25 13:30:16,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:16,879 INFO L472 AbstractCegarLoop]: Abstraction has 199 states and 200 transitions. [2018-07-25 13:30:16,879 INFO L473 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-07-25 13:30:16,879 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 200 transitions. [2018-07-25 13:30:16,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-07-25 13:30:16,880 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:16,880 INFO L354 BasicCegarLoop]: trace histogram [49, 49, 48, 48, 1, 1, 1, 1] [2018-07-25 13:30:16,880 INFO L415 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:16,881 INFO L82 PathProgramCache]: Analyzing trace with hash -805348823, now seen corresponding path program 95 times [2018-07-25 13:30:16,881 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:16,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:17,181 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 2352 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:17,182 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:17,182 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-07-25 13:30:17,182 INFO L451 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-07-25 13:30:17,183 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-07-25 13:30:17,184 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2549, Invalid=7351, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 13:30:17,184 INFO L87 Difference]: Start difference. First operand 199 states and 200 transitions. Second operand 100 states. [2018-07-25 13:30:17,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:17,914 INFO L93 Difference]: Finished difference Result 302 states and 304 transitions. [2018-07-25 13:30:17,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-07-25 13:30:17,914 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 198 [2018-07-25 13:30:17,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:17,915 INFO L225 Difference]: With dead ends: 302 [2018-07-25 13:30:17,915 INFO L226 Difference]: Without dead ends: 201 [2018-07-25 13:30:17,917 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3480 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5097, Invalid=16955, Unknown=0, NotChecked=0, Total=22052 [2018-07-25 13:30:17,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-07-25 13:30:17,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-07-25 13:30:17,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-07-25 13:30:17,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 202 transitions. [2018-07-25 13:30:17,966 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 202 transitions. Word has length 198 [2018-07-25 13:30:17,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:17,966 INFO L472 AbstractCegarLoop]: Abstraction has 201 states and 202 transitions. [2018-07-25 13:30:17,966 INFO L473 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-07-25 13:30:17,966 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 202 transitions. [2018-07-25 13:30:17,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-07-25 13:30:17,967 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:17,967 INFO L354 BasicCegarLoop]: trace histogram [50, 49, 49, 48, 1, 1, 1, 1] [2018-07-25 13:30:17,967 INFO L415 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:17,967 INFO L82 PathProgramCache]: Analyzing trace with hash -779331229, now seen corresponding path program 96 times [2018-07-25 13:30:17,968 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:18,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:18,141 INFO L134 CoverageAnalysis]: Checked inductivity of 4802 backedges. 2450 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:18,141 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:18,141 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-07-25 13:30:18,141 INFO L451 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-07-25 13:30:18,142 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-07-25 13:30:18,142 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 13:30:18,142 INFO L87 Difference]: Start difference. First operand 201 states and 202 transitions. Second operand 54 states. [2018-07-25 13:30:18,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:18,340 INFO L93 Difference]: Finished difference Result 209 states and 210 transitions. [2018-07-25 13:30:18,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-07-25 13:30:18,340 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 200 [2018-07-25 13:30:18,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:18,341 INFO L225 Difference]: With dead ends: 209 [2018-07-25 13:30:18,341 INFO L226 Difference]: Without dead ends: 207 [2018-07-25 13:30:18,342 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2500 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4031, Invalid=6681, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 13:30:18,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-07-25 13:30:18,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 203. [2018-07-25 13:30:18,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-07-25 13:30:18,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 204 transitions. [2018-07-25 13:30:18,409 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 204 transitions. Word has length 200 [2018-07-25 13:30:18,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:18,410 INFO L472 AbstractCegarLoop]: Abstraction has 203 states and 204 transitions. [2018-07-25 13:30:18,410 INFO L473 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-07-25 13:30:18,410 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 204 transitions. [2018-07-25 13:30:18,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-07-25 13:30:18,411 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:18,411 INFO L354 BasicCegarLoop]: trace histogram [50, 50, 49, 49, 1, 1, 1, 1] [2018-07-25 13:30:18,411 INFO L415 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:18,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1613068321, now seen corresponding path program 97 times [2018-07-25 13:30:18,412 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:18,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:18,737 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 2450 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:18,737 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:18,738 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-07-25 13:30:18,738 INFO L451 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-07-25 13:30:18,739 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-07-25 13:30:18,739 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2651, Invalid=7651, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 13:30:18,740 INFO L87 Difference]: Start difference. First operand 203 states and 204 transitions. Second operand 102 states. [2018-07-25 13:30:19,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:19,531 INFO L93 Difference]: Finished difference Result 308 states and 310 transitions. [2018-07-25 13:30:19,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-07-25 13:30:19,531 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 202 [2018-07-25 13:30:19,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:19,532 INFO L225 Difference]: With dead ends: 308 [2018-07-25 13:30:19,532 INFO L226 Difference]: Without dead ends: 205 [2018-07-25 13:30:19,533 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3626 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5301, Invalid=17651, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 13:30:19,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-07-25 13:30:19,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-07-25 13:30:19,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-07-25 13:30:19,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 206 transitions. [2018-07-25 13:30:19,588 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 206 transitions. Word has length 202 [2018-07-25 13:30:19,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:19,589 INFO L472 AbstractCegarLoop]: Abstraction has 205 states and 206 transitions. [2018-07-25 13:30:19,589 INFO L473 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-07-25 13:30:19,589 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 206 transitions. [2018-07-25 13:30:19,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-07-25 13:30:19,590 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:19,590 INFO L354 BasicCegarLoop]: trace histogram [51, 50, 50, 49, 1, 1, 1, 1] [2018-07-25 13:30:19,590 INFO L415 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:19,591 INFO L82 PathProgramCache]: Analyzing trace with hash 134306329, now seen corresponding path program 98 times [2018-07-25 13:30:19,591 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:19,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:19,764 INFO L134 CoverageAnalysis]: Checked inductivity of 5000 backedges. 2550 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:19,764 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:19,764 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-07-25 13:30:19,765 INFO L451 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-07-25 13:30:19,765 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-07-25 13:30:19,765 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 13:30:19,765 INFO L87 Difference]: Start difference. First operand 205 states and 206 transitions. Second operand 55 states. [2018-07-25 13:30:19,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:19,946 INFO L93 Difference]: Finished difference Result 213 states and 214 transitions. [2018-07-25 13:30:19,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-07-25 13:30:19,947 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 204 [2018-07-25 13:30:19,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:19,948 INFO L225 Difference]: With dead ends: 213 [2018-07-25 13:30:19,948 INFO L226 Difference]: Without dead ends: 211 [2018-07-25 13:30:19,949 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2601 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4188, Invalid=6942, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 13:30:19,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-07-25 13:30:20,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 207. [2018-07-25 13:30:20,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-07-25 13:30:20,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 208 transitions. [2018-07-25 13:30:20,003 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 208 transitions. Word has length 204 [2018-07-25 13:30:20,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:20,003 INFO L472 AbstractCegarLoop]: Abstraction has 207 states and 208 transitions. [2018-07-25 13:30:20,003 INFO L473 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-07-25 13:30:20,003 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 208 transitions. [2018-07-25 13:30:20,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-07-25 13:30:20,004 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:20,004 INFO L354 BasicCegarLoop]: trace histogram [51, 51, 50, 50, 1, 1, 1, 1] [2018-07-25 13:30:20,004 INFO L415 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:20,004 INFO L82 PathProgramCache]: Analyzing trace with hash 219296533, now seen corresponding path program 99 times [2018-07-25 13:30:20,004 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:20,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:20,310 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 2550 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:20,311 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:20,311 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-07-25 13:30:20,311 INFO L451 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-07-25 13:30:20,312 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-07-25 13:30:20,312 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2755, Invalid=7957, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 13:30:20,312 INFO L87 Difference]: Start difference. First operand 207 states and 208 transitions. Second operand 104 states. [2018-07-25 13:30:20,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:20,785 INFO L93 Difference]: Finished difference Result 314 states and 316 transitions. [2018-07-25 13:30:20,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-07-25 13:30:20,785 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 206 [2018-07-25 13:30:20,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:20,786 INFO L225 Difference]: With dead ends: 314 [2018-07-25 13:30:20,786 INFO L226 Difference]: Without dead ends: 209 [2018-07-25 13:30:20,789 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3775 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5509, Invalid=18361, Unknown=0, NotChecked=0, Total=23870 [2018-07-25 13:30:20,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-07-25 13:30:20,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-07-25 13:30:20,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-07-25 13:30:20,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 210 transitions. [2018-07-25 13:30:20,854 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 210 transitions. Word has length 206 [2018-07-25 13:30:20,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:20,854 INFO L472 AbstractCegarLoop]: Abstraction has 209 states and 210 transitions. [2018-07-25 13:30:20,854 INFO L473 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-07-25 13:30:20,854 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 210 transitions. [2018-07-25 13:30:20,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-07-25 13:30:20,855 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:20,855 INFO L354 BasicCegarLoop]: trace histogram [52, 51, 51, 50, 1, 1, 1, 1] [2018-07-25 13:30:20,855 INFO L415 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:20,856 INFO L82 PathProgramCache]: Analyzing trace with hash -2068752305, now seen corresponding path program 100 times [2018-07-25 13:30:20,856 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:20,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:21,051 INFO L134 CoverageAnalysis]: Checked inductivity of 5202 backedges. 2652 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:21,051 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:21,051 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-25 13:30:21,052 INFO L451 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-25 13:30:21,052 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-25 13:30:21,052 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 13:30:21,053 INFO L87 Difference]: Start difference. First operand 209 states and 210 transitions. Second operand 56 states. [2018-07-25 13:30:21,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:21,248 INFO L93 Difference]: Finished difference Result 217 states and 218 transitions. [2018-07-25 13:30:21,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-07-25 13:30:21,248 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 208 [2018-07-25 13:30:21,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:21,249 INFO L225 Difference]: With dead ends: 217 [2018-07-25 13:30:21,249 INFO L226 Difference]: Without dead ends: 215 [2018-07-25 13:30:21,250 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2704 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4348, Invalid=7208, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 13:30:21,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-07-25 13:30:21,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 211. [2018-07-25 13:30:21,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-07-25 13:30:21,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 212 transitions. [2018-07-25 13:30:21,310 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 212 transitions. Word has length 208 [2018-07-25 13:30:21,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:21,310 INFO L472 AbstractCegarLoop]: Abstraction has 211 states and 212 transitions. [2018-07-25 13:30:21,310 INFO L473 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-25 13:30:21,310 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 212 transitions. [2018-07-25 13:30:21,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-07-25 13:30:21,311 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:21,311 INFO L354 BasicCegarLoop]: trace histogram [52, 52, 51, 51, 1, 1, 1, 1] [2018-07-25 13:30:21,311 INFO L415 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:21,312 INFO L82 PathProgramCache]: Analyzing trace with hash 498826187, now seen corresponding path program 101 times [2018-07-25 13:30:21,312 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:21,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:21,641 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 2652 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:21,642 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:21,642 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2018-07-25 13:30:21,642 INFO L451 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-07-25 13:30:21,643 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-07-25 13:30:21,643 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2861, Invalid=8269, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 13:30:21,644 INFO L87 Difference]: Start difference. First operand 211 states and 212 transitions. Second operand 106 states. [2018-07-25 13:30:22,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:22,622 INFO L93 Difference]: Finished difference Result 320 states and 322 transitions. [2018-07-25 13:30:22,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-07-25 13:30:22,622 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 210 [2018-07-25 13:30:22,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:22,623 INFO L225 Difference]: With dead ends: 320 [2018-07-25 13:30:22,623 INFO L226 Difference]: Without dead ends: 213 [2018-07-25 13:30:22,626 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3927 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5721, Invalid=19085, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 13:30:22,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-07-25 13:30:22,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2018-07-25 13:30:22,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-07-25 13:30:22,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 214 transitions. [2018-07-25 13:30:22,711 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 214 transitions. Word has length 210 [2018-07-25 13:30:22,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:22,711 INFO L472 AbstractCegarLoop]: Abstraction has 213 states and 214 transitions. [2018-07-25 13:30:22,711 INFO L473 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-07-25 13:30:22,711 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 214 transitions. [2018-07-25 13:30:22,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-07-25 13:30:22,712 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:22,713 INFO L354 BasicCegarLoop]: trace histogram [53, 52, 52, 51, 1, 1, 1, 1] [2018-07-25 13:30:22,713 INFO L415 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:22,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1166969851, now seen corresponding path program 102 times [2018-07-25 13:30:22,713 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:22,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:22,971 INFO L134 CoverageAnalysis]: Checked inductivity of 5408 backedges. 2756 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:22,972 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:22,972 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-07-25 13:30:22,972 INFO L451 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-07-25 13:30:22,972 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-07-25 13:30:22,973 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 13:30:22,973 INFO L87 Difference]: Start difference. First operand 213 states and 214 transitions. Second operand 57 states. [2018-07-25 13:30:23,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:23,178 INFO L93 Difference]: Finished difference Result 221 states and 222 transitions. [2018-07-25 13:30:23,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-07-25 13:30:23,178 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 212 [2018-07-25 13:30:23,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:23,179 INFO L225 Difference]: With dead ends: 221 [2018-07-25 13:30:23,179 INFO L226 Difference]: Without dead ends: 219 [2018-07-25 13:30:23,181 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2809 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4511, Invalid=7479, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 13:30:23,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-07-25 13:30:23,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 215. [2018-07-25 13:30:23,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-07-25 13:30:23,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 216 transitions. [2018-07-25 13:30:23,244 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 216 transitions. Word has length 212 [2018-07-25 13:30:23,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:23,244 INFO L472 AbstractCegarLoop]: Abstraction has 215 states and 216 transitions. [2018-07-25 13:30:23,244 INFO L473 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-07-25 13:30:23,244 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 216 transitions. [2018-07-25 13:30:23,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-07-25 13:30:23,245 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:23,245 INFO L354 BasicCegarLoop]: trace histogram [53, 53, 52, 52, 1, 1, 1, 1] [2018-07-25 13:30:23,245 INFO L415 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:23,246 INFO L82 PathProgramCache]: Analyzing trace with hash -471629311, now seen corresponding path program 103 times [2018-07-25 13:30:23,246 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:23,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:23,689 INFO L134 CoverageAnalysis]: Checked inductivity of 5512 backedges. 2756 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:23,689 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:23,689 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2018-07-25 13:30:23,689 INFO L451 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-07-25 13:30:23,690 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-07-25 13:30:23,690 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2969, Invalid=8587, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 13:30:23,691 INFO L87 Difference]: Start difference. First operand 215 states and 216 transitions. Second operand 108 states. [2018-07-25 13:30:24,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:24,580 INFO L93 Difference]: Finished difference Result 326 states and 328 transitions. [2018-07-25 13:30:24,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-07-25 13:30:24,580 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 214 [2018-07-25 13:30:24,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:24,581 INFO L225 Difference]: With dead ends: 326 [2018-07-25 13:30:24,581 INFO L226 Difference]: Without dead ends: 217 [2018-07-25 13:30:24,584 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4082 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5937, Invalid=19823, Unknown=0, NotChecked=0, Total=25760 [2018-07-25 13:30:24,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-07-25 13:30:24,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-07-25 13:30:24,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-07-25 13:30:24,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 218 transitions. [2018-07-25 13:30:24,643 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 218 transitions. Word has length 214 [2018-07-25 13:30:24,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:24,644 INFO L472 AbstractCegarLoop]: Abstraction has 217 states and 218 transitions. [2018-07-25 13:30:24,644 INFO L473 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-07-25 13:30:24,644 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 218 transitions. [2018-07-25 13:30:24,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-07-25 13:30:24,645 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:24,645 INFO L354 BasicCegarLoop]: trace histogram [54, 53, 53, 52, 1, 1, 1, 1] [2018-07-25 13:30:24,645 INFO L415 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:24,645 INFO L82 PathProgramCache]: Analyzing trace with hash -938554053, now seen corresponding path program 104 times [2018-07-25 13:30:24,645 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:24,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:24,856 INFO L134 CoverageAnalysis]: Checked inductivity of 5618 backedges. 2862 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:24,857 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:24,857 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-07-25 13:30:24,857 INFO L451 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-07-25 13:30:24,857 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-07-25 13:30:24,858 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 13:30:24,858 INFO L87 Difference]: Start difference. First operand 217 states and 218 transitions. Second operand 58 states. [2018-07-25 13:30:25,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:25,075 INFO L93 Difference]: Finished difference Result 225 states and 226 transitions. [2018-07-25 13:30:25,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-07-25 13:30:25,075 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 216 [2018-07-25 13:30:25,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:25,076 INFO L225 Difference]: With dead ends: 225 [2018-07-25 13:30:25,076 INFO L226 Difference]: Without dead ends: 223 [2018-07-25 13:30:25,077 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2916 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4677, Invalid=7755, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 13:30:25,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-07-25 13:30:25,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 219. [2018-07-25 13:30:25,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-07-25 13:30:25,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 220 transitions. [2018-07-25 13:30:25,146 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 220 transitions. Word has length 216 [2018-07-25 13:30:25,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:25,146 INFO L472 AbstractCegarLoop]: Abstraction has 219 states and 220 transitions. [2018-07-25 13:30:25,146 INFO L473 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-07-25 13:30:25,146 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 220 transitions. [2018-07-25 13:30:25,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-07-25 13:30:25,147 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:25,147 INFO L354 BasicCegarLoop]: trace histogram [54, 54, 53, 53, 1, 1, 1, 1] [2018-07-25 13:30:25,147 INFO L415 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:25,147 INFO L82 PathProgramCache]: Analyzing trace with hash -7379529, now seen corresponding path program 105 times [2018-07-25 13:30:25,147 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:25,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:25,541 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 2862 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:25,541 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:25,541 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2018-07-25 13:30:25,541 INFO L451 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-07-25 13:30:25,542 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-07-25 13:30:25,543 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3079, Invalid=8911, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 13:30:25,543 INFO L87 Difference]: Start difference. First operand 219 states and 220 transitions. Second operand 110 states. [2018-07-25 13:30:26,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:26,178 INFO L93 Difference]: Finished difference Result 332 states and 334 transitions. [2018-07-25 13:30:26,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-07-25 13:30:26,178 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 218 [2018-07-25 13:30:26,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:26,179 INFO L225 Difference]: With dead ends: 332 [2018-07-25 13:30:26,179 INFO L226 Difference]: Without dead ends: 221 [2018-07-25 13:30:26,181 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4240 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6157, Invalid=20575, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 13:30:26,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-07-25 13:30:26,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2018-07-25 13:30:26,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-07-25 13:30:26,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 222 transitions. [2018-07-25 13:30:26,245 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 222 transitions. Word has length 218 [2018-07-25 13:30:26,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:26,245 INFO L472 AbstractCegarLoop]: Abstraction has 221 states and 222 transitions. [2018-07-25 13:30:26,245 INFO L473 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-07-25 13:30:26,245 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 222 transitions. [2018-07-25 13:30:26,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-07-25 13:30:26,246 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:26,246 INFO L354 BasicCegarLoop]: trace histogram [55, 54, 54, 53, 1, 1, 1, 1] [2018-07-25 13:30:26,247 INFO L415 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:26,247 INFO L82 PathProgramCache]: Analyzing trace with hash -95517711, now seen corresponding path program 106 times [2018-07-25 13:30:26,247 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:26,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:26,515 INFO L134 CoverageAnalysis]: Checked inductivity of 5832 backedges. 2970 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:26,516 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:26,516 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-07-25 13:30:26,516 INFO L451 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-07-25 13:30:26,516 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-07-25 13:30:26,516 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 13:30:26,517 INFO L87 Difference]: Start difference. First operand 221 states and 222 transitions. Second operand 59 states. [2018-07-25 13:30:26,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:26,726 INFO L93 Difference]: Finished difference Result 229 states and 230 transitions. [2018-07-25 13:30:26,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-07-25 13:30:26,726 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 220 [2018-07-25 13:30:26,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:26,727 INFO L225 Difference]: With dead ends: 229 [2018-07-25 13:30:26,727 INFO L226 Difference]: Without dead ends: 227 [2018-07-25 13:30:26,728 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3025 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4846, Invalid=8036, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 13:30:26,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-07-25 13:30:26,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 223. [2018-07-25 13:30:26,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-07-25 13:30:26,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 224 transitions. [2018-07-25 13:30:26,795 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 224 transitions. Word has length 220 [2018-07-25 13:30:26,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:26,795 INFO L472 AbstractCegarLoop]: Abstraction has 223 states and 224 transitions. [2018-07-25 13:30:26,795 INFO L473 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-07-25 13:30:26,795 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 224 transitions. [2018-07-25 13:30:26,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-07-25 13:30:26,796 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:26,796 INFO L354 BasicCegarLoop]: trace histogram [55, 55, 54, 54, 1, 1, 1, 1] [2018-07-25 13:30:26,796 INFO L415 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:26,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1598273811, now seen corresponding path program 107 times [2018-07-25 13:30:26,797 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:26,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:27,191 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 2970 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:27,191 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:27,191 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111] total 111 [2018-07-25 13:30:27,191 INFO L451 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-07-25 13:30:27,192 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-07-25 13:30:27,193 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3191, Invalid=9241, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 13:30:27,193 INFO L87 Difference]: Start difference. First operand 223 states and 224 transitions. Second operand 112 states. [2018-07-25 13:30:27,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:27,910 INFO L93 Difference]: Finished difference Result 338 states and 340 transitions. [2018-07-25 13:30:27,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-07-25 13:30:27,910 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 222 [2018-07-25 13:30:27,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:27,911 INFO L225 Difference]: With dead ends: 338 [2018-07-25 13:30:27,911 INFO L226 Difference]: Without dead ends: 225 [2018-07-25 13:30:27,914 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4401 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6381, Invalid=21341, Unknown=0, NotChecked=0, Total=27722 [2018-07-25 13:30:27,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-07-25 13:30:27,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2018-07-25 13:30:27,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-07-25 13:30:27,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 226 transitions. [2018-07-25 13:30:27,977 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 226 transitions. Word has length 222 [2018-07-25 13:30:27,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:27,977 INFO L472 AbstractCegarLoop]: Abstraction has 225 states and 226 transitions. [2018-07-25 13:30:27,977 INFO L473 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-07-25 13:30:27,977 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 226 transitions. [2018-07-25 13:30:27,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-07-25 13:30:27,978 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:27,978 INFO L354 BasicCegarLoop]: trace histogram [56, 55, 55, 54, 1, 1, 1, 1] [2018-07-25 13:30:27,978 INFO L415 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:27,979 INFO L82 PathProgramCache]: Analyzing trace with hash -840058841, now seen corresponding path program 108 times [2018-07-25 13:30:27,979 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:28,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:28,245 INFO L134 CoverageAnalysis]: Checked inductivity of 6050 backedges. 3080 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:28,245 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:28,245 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-25 13:30:28,246 INFO L451 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-25 13:30:28,246 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-25 13:30:28,246 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 13:30:28,246 INFO L87 Difference]: Start difference. First operand 225 states and 226 transitions. Second operand 60 states. [2018-07-25 13:30:28,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:28,473 INFO L93 Difference]: Finished difference Result 233 states and 234 transitions. [2018-07-25 13:30:28,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-07-25 13:30:28,473 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 224 [2018-07-25 13:30:28,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:28,474 INFO L225 Difference]: With dead ends: 233 [2018-07-25 13:30:28,474 INFO L226 Difference]: Without dead ends: 231 [2018-07-25 13:30:28,475 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3136 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5018, Invalid=8322, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 13:30:28,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-07-25 13:30:28,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 227. [2018-07-25 13:30:28,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-07-25 13:30:28,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 228 transitions. [2018-07-25 13:30:28,543 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 228 transitions. Word has length 224 [2018-07-25 13:30:28,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:28,543 INFO L472 AbstractCegarLoop]: Abstraction has 227 states and 228 transitions. [2018-07-25 13:30:28,543 INFO L473 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-25 13:30:28,543 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 228 transitions. [2018-07-25 13:30:28,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-07-25 13:30:28,544 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:28,544 INFO L354 BasicCegarLoop]: trace histogram [56, 56, 55, 55, 1, 1, 1, 1] [2018-07-25 13:30:28,544 INFO L415 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:28,544 INFO L82 PathProgramCache]: Analyzing trace with hash 157238691, now seen corresponding path program 109 times [2018-07-25 13:30:28,544 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:28,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:28,943 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 3080 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:28,943 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:28,943 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113] total 113 [2018-07-25 13:30:28,944 INFO L451 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-07-25 13:30:28,944 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-07-25 13:30:28,945 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3305, Invalid=9577, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 13:30:28,945 INFO L87 Difference]: Start difference. First operand 227 states and 228 transitions. Second operand 114 states. [2018-07-25 13:30:29,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:29,476 INFO L93 Difference]: Finished difference Result 344 states and 346 transitions. [2018-07-25 13:30:29,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-07-25 13:30:29,476 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 226 [2018-07-25 13:30:29,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:29,477 INFO L225 Difference]: With dead ends: 344 [2018-07-25 13:30:29,477 INFO L226 Difference]: Without dead ends: 229 [2018-07-25 13:30:29,480 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4565 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6609, Invalid=22121, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 13:30:29,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-07-25 13:30:29,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2018-07-25 13:30:29,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-07-25 13:30:29,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 230 transitions. [2018-07-25 13:30:29,548 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 230 transitions. Word has length 226 [2018-07-25 13:30:29,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:29,548 INFO L472 AbstractCegarLoop]: Abstraction has 229 states and 230 transitions. [2018-07-25 13:30:29,548 INFO L473 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-07-25 13:30:29,548 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 230 transitions. [2018-07-25 13:30:29,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-07-25 13:30:29,549 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:29,549 INFO L354 BasicCegarLoop]: trace histogram [57, 56, 56, 55, 1, 1, 1, 1] [2018-07-25 13:30:29,549 INFO L415 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:29,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1906411997, now seen corresponding path program 110 times [2018-07-25 13:30:29,550 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:29,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:29,771 INFO L134 CoverageAnalysis]: Checked inductivity of 6272 backedges. 3192 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:29,772 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:29,772 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-07-25 13:30:29,772 INFO L451 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-07-25 13:30:29,773 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-07-25 13:30:29,773 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 13:30:29,773 INFO L87 Difference]: Start difference. First operand 229 states and 230 transitions. Second operand 61 states. [2018-07-25 13:30:30,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:30,057 INFO L93 Difference]: Finished difference Result 237 states and 238 transitions. [2018-07-25 13:30:30,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-07-25 13:30:30,057 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 228 [2018-07-25 13:30:30,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:30,058 INFO L225 Difference]: With dead ends: 237 [2018-07-25 13:30:30,058 INFO L226 Difference]: Without dead ends: 235 [2018-07-25 13:30:30,060 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3249 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5193, Invalid=8613, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 13:30:30,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-07-25 13:30:30,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 231. [2018-07-25 13:30:30,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-07-25 13:30:30,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 232 transitions. [2018-07-25 13:30:30,194 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 232 transitions. Word has length 228 [2018-07-25 13:30:30,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:30,194 INFO L472 AbstractCegarLoop]: Abstraction has 231 states and 232 transitions. [2018-07-25 13:30:30,194 INFO L473 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-07-25 13:30:30,195 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 232 transitions. [2018-07-25 13:30:30,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-07-25 13:30:30,196 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:30,196 INFO L354 BasicCegarLoop]: trace histogram [57, 57, 56, 56, 1, 1, 1, 1] [2018-07-25 13:30:30,196 INFO L415 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:30,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1889173031, now seen corresponding path program 111 times [2018-07-25 13:30:30,197 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:30,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:30,805 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 3192 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:30,806 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:30,806 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115] total 115 [2018-07-25 13:30:30,806 INFO L451 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-07-25 13:30:30,807 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-07-25 13:30:30,807 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3421, Invalid=9919, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 13:30:30,808 INFO L87 Difference]: Start difference. First operand 231 states and 232 transitions. Second operand 116 states. [2018-07-25 13:30:31,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:31,558 INFO L93 Difference]: Finished difference Result 350 states and 352 transitions. [2018-07-25 13:30:31,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-07-25 13:30:31,558 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 230 [2018-07-25 13:30:31,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:31,559 INFO L225 Difference]: With dead ends: 350 [2018-07-25 13:30:31,559 INFO L226 Difference]: Without dead ends: 233 [2018-07-25 13:30:31,562 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4732 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=6841, Invalid=22915, Unknown=0, NotChecked=0, Total=29756 [2018-07-25 13:30:31,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-07-25 13:30:31,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2018-07-25 13:30:31,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-07-25 13:30:31,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 234 transitions. [2018-07-25 13:30:31,630 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 234 transitions. Word has length 230 [2018-07-25 13:30:31,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:31,630 INFO L472 AbstractCegarLoop]: Abstraction has 233 states and 234 transitions. [2018-07-25 13:30:31,630 INFO L473 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-07-25 13:30:31,630 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 234 transitions. [2018-07-25 13:30:31,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-07-25 13:30:31,631 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:31,631 INFO L354 BasicCegarLoop]: trace histogram [58, 57, 57, 56, 1, 1, 1, 1] [2018-07-25 13:30:31,631 INFO L415 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:31,632 INFO L82 PathProgramCache]: Analyzing trace with hash -938010349, now seen corresponding path program 112 times [2018-07-25 13:30:31,632 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:31,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:31,852 INFO L134 CoverageAnalysis]: Checked inductivity of 6498 backedges. 3306 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:31,852 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:31,852 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-07-25 13:30:31,853 INFO L451 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-07-25 13:30:31,853 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-07-25 13:30:31,853 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1832, Invalid=1950, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 13:30:31,854 INFO L87 Difference]: Start difference. First operand 233 states and 234 transitions. Second operand 62 states. [2018-07-25 13:30:32,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:32,084 INFO L93 Difference]: Finished difference Result 241 states and 242 transitions. [2018-07-25 13:30:32,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-07-25 13:30:32,084 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 232 [2018-07-25 13:30:32,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:32,085 INFO L225 Difference]: With dead ends: 241 [2018-07-25 13:30:32,085 INFO L226 Difference]: Without dead ends: 239 [2018-07-25 13:30:32,087 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3364 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5371, Invalid=8909, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 13:30:32,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-07-25 13:30:32,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 235. [2018-07-25 13:30:32,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-07-25 13:30:32,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 236 transitions. [2018-07-25 13:30:32,165 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 236 transitions. Word has length 232 [2018-07-25 13:30:32,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:32,165 INFO L472 AbstractCegarLoop]: Abstraction has 235 states and 236 transitions. [2018-07-25 13:30:32,165 INFO L473 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-07-25 13:30:32,165 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 236 transitions. [2018-07-25 13:30:32,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-07-25 13:30:32,166 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:32,166 INFO L354 BasicCegarLoop]: trace histogram [58, 58, 57, 57, 1, 1, 1, 1] [2018-07-25 13:30:32,166 INFO L415 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:32,166 INFO L82 PathProgramCache]: Analyzing trace with hash 515120015, now seen corresponding path program 113 times [2018-07-25 13:30:32,166 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:32,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:32,586 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 3306 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:32,586 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:32,586 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117] total 117 [2018-07-25 13:30:32,587 INFO L451 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-07-25 13:30:32,587 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-07-25 13:30:32,588 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3539, Invalid=10267, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 13:30:32,589 INFO L87 Difference]: Start difference. First operand 235 states and 236 transitions. Second operand 118 states. [2018-07-25 13:30:33,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:33,374 INFO L93 Difference]: Finished difference Result 356 states and 358 transitions. [2018-07-25 13:30:33,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-07-25 13:30:33,375 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 234 [2018-07-25 13:30:33,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:33,375 INFO L225 Difference]: With dead ends: 356 [2018-07-25 13:30:33,375 INFO L226 Difference]: Without dead ends: 237 [2018-07-25 13:30:33,378 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4902 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=7077, Invalid=23723, Unknown=0, NotChecked=0, Total=30800 [2018-07-25 13:30:33,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-07-25 13:30:33,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2018-07-25 13:30:33,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-07-25 13:30:33,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 238 transitions. [2018-07-25 13:30:33,453 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 238 transitions. Word has length 234 [2018-07-25 13:30:33,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:33,453 INFO L472 AbstractCegarLoop]: Abstraction has 237 states and 238 transitions. [2018-07-25 13:30:33,453 INFO L473 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-07-25 13:30:33,454 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 238 transitions. [2018-07-25 13:30:33,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-07-25 13:30:33,454 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:33,454 INFO L354 BasicCegarLoop]: trace histogram [59, 58, 58, 57, 1, 1, 1, 1] [2018-07-25 13:30:33,454 INFO L415 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:33,455 INFO L82 PathProgramCache]: Analyzing trace with hash -369916471, now seen corresponding path program 114 times [2018-07-25 13:30:33,455 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:33,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:33,684 INFO L134 CoverageAnalysis]: Checked inductivity of 6728 backedges. 3422 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:33,684 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:33,685 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-07-25 13:30:33,685 INFO L451 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-07-25 13:30:33,685 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-07-25 13:30:33,685 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 13:30:33,686 INFO L87 Difference]: Start difference. First operand 237 states and 238 transitions. Second operand 63 states. [2018-07-25 13:30:33,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:33,969 INFO L93 Difference]: Finished difference Result 245 states and 246 transitions. [2018-07-25 13:30:33,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-07-25 13:30:33,969 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 236 [2018-07-25 13:30:33,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:33,970 INFO L225 Difference]: With dead ends: 245 [2018-07-25 13:30:33,970 INFO L226 Difference]: Without dead ends: 243 [2018-07-25 13:30:33,971 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3481 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5552, Invalid=9210, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 13:30:33,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-07-25 13:30:34,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 239. [2018-07-25 13:30:34,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-07-25 13:30:34,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 240 transitions. [2018-07-25 13:30:34,044 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 240 transitions. Word has length 236 [2018-07-25 13:30:34,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:34,045 INFO L472 AbstractCegarLoop]: Abstraction has 239 states and 240 transitions. [2018-07-25 13:30:34,045 INFO L473 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-07-25 13:30:34,045 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 240 transitions. [2018-07-25 13:30:34,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-07-25 13:30:34,046 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:34,046 INFO L354 BasicCegarLoop]: trace histogram [59, 59, 58, 58, 1, 1, 1, 1] [2018-07-25 13:30:34,046 INFO L415 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:34,046 INFO L82 PathProgramCache]: Analyzing trace with hash 992490181, now seen corresponding path program 115 times [2018-07-25 13:30:34,046 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:34,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:34,536 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 3422 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:34,536 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:34,536 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119] total 119 [2018-07-25 13:30:34,537 INFO L451 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-07-25 13:30:34,537 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-07-25 13:30:34,538 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3659, Invalid=10621, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 13:30:34,538 INFO L87 Difference]: Start difference. First operand 239 states and 240 transitions. Second operand 120 states. [2018-07-25 13:30:35,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:35,284 INFO L93 Difference]: Finished difference Result 362 states and 364 transitions. [2018-07-25 13:30:35,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-07-25 13:30:35,284 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 238 [2018-07-25 13:30:35,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:35,284 INFO L225 Difference]: With dead ends: 362 [2018-07-25 13:30:35,285 INFO L226 Difference]: Without dead ends: 241 [2018-07-25 13:30:35,287 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5075 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=7317, Invalid=24545, Unknown=0, NotChecked=0, Total=31862 [2018-07-25 13:30:35,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-07-25 13:30:35,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2018-07-25 13:30:35,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-07-25 13:30:35,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 242 transitions. [2018-07-25 13:30:35,364 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 242 transitions. Word has length 238 [2018-07-25 13:30:35,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:35,364 INFO L472 AbstractCegarLoop]: Abstraction has 241 states and 242 transitions. [2018-07-25 13:30:35,364 INFO L473 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-07-25 13:30:35,364 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 242 transitions. [2018-07-25 13:30:35,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-07-25 13:30:35,365 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:35,365 INFO L354 BasicCegarLoop]: trace histogram [60, 59, 59, 58, 1, 1, 1, 1] [2018-07-25 13:30:35,365 INFO L415 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:35,365 INFO L82 PathProgramCache]: Analyzing trace with hash 668200959, now seen corresponding path program 116 times [2018-07-25 13:30:35,366 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:35,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:35,601 INFO L134 CoverageAnalysis]: Checked inductivity of 6962 backedges. 3540 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:35,601 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:35,601 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-25 13:30:35,601 INFO L451 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-25 13:30:35,602 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-25 13:30:35,602 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1955, Invalid=2077, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 13:30:35,602 INFO L87 Difference]: Start difference. First operand 241 states and 242 transitions. Second operand 64 states. [2018-07-25 13:30:35,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:35,852 INFO L93 Difference]: Finished difference Result 249 states and 250 transitions. [2018-07-25 13:30:35,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-07-25 13:30:35,852 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 240 [2018-07-25 13:30:35,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:35,853 INFO L225 Difference]: With dead ends: 249 [2018-07-25 13:30:35,854 INFO L226 Difference]: Without dead ends: 247 [2018-07-25 13:30:35,855 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3600 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5736, Invalid=9516, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 13:30:35,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-07-25 13:30:35,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 243. [2018-07-25 13:30:35,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-07-25 13:30:35,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 244 transitions. [2018-07-25 13:30:35,935 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 244 transitions. Word has length 240 [2018-07-25 13:30:35,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:35,935 INFO L472 AbstractCegarLoop]: Abstraction has 243 states and 244 transitions. [2018-07-25 13:30:35,935 INFO L473 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-25 13:30:35,935 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 244 transitions. [2018-07-25 13:30:35,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-07-25 13:30:35,936 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:35,936 INFO L354 BasicCegarLoop]: trace histogram [60, 60, 59, 59, 1, 1, 1, 1] [2018-07-25 13:30:35,936 INFO L415 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:35,936 INFO L82 PathProgramCache]: Analyzing trace with hash -2104039557, now seen corresponding path program 117 times [2018-07-25 13:30:35,936 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:36,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:36,386 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 3540 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:36,386 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:36,386 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121] total 121 [2018-07-25 13:30:36,386 INFO L451 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-07-25 13:30:36,387 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-07-25 13:30:36,388 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3781, Invalid=10981, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 13:30:36,388 INFO L87 Difference]: Start difference. First operand 243 states and 244 transitions. Second operand 122 states. [2018-07-25 13:30:37,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:37,344 INFO L93 Difference]: Finished difference Result 368 states and 370 transitions. [2018-07-25 13:30:37,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-07-25 13:30:37,344 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 242 [2018-07-25 13:30:37,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:37,345 INFO L225 Difference]: With dead ends: 368 [2018-07-25 13:30:37,345 INFO L226 Difference]: Without dead ends: 245 [2018-07-25 13:30:37,348 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5251 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=7561, Invalid=25381, Unknown=0, NotChecked=0, Total=32942 [2018-07-25 13:30:37,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-07-25 13:30:37,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2018-07-25 13:30:37,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-07-25 13:30:37,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 246 transitions. [2018-07-25 13:30:37,430 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 246 transitions. Word has length 242 [2018-07-25 13:30:37,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:37,430 INFO L472 AbstractCegarLoop]: Abstraction has 245 states and 246 transitions. [2018-07-25 13:30:37,430 INFO L473 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-07-25 13:30:37,431 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 246 transitions. [2018-07-25 13:30:37,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-07-25 13:30:37,431 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:37,431 INFO L354 BasicCegarLoop]: trace histogram [61, 60, 60, 59, 1, 1, 1, 1] [2018-07-25 13:30:37,431 INFO L415 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:37,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1941080139, now seen corresponding path program 118 times [2018-07-25 13:30:37,432 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:37,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:37,683 INFO L134 CoverageAnalysis]: Checked inductivity of 7200 backedges. 3660 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:37,683 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:37,684 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-07-25 13:30:37,684 INFO L451 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-07-25 13:30:37,684 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-07-25 13:30:37,684 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2018, Invalid=2142, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 13:30:37,685 INFO L87 Difference]: Start difference. First operand 245 states and 246 transitions. Second operand 65 states. [2018-07-25 13:30:37,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:37,957 INFO L93 Difference]: Finished difference Result 253 states and 254 transitions. [2018-07-25 13:30:37,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-07-25 13:30:37,958 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 244 [2018-07-25 13:30:37,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:37,958 INFO L225 Difference]: With dead ends: 253 [2018-07-25 13:30:37,958 INFO L226 Difference]: Without dead ends: 251 [2018-07-25 13:30:37,960 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3721 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5923, Invalid=9827, Unknown=0, NotChecked=0, Total=15750 [2018-07-25 13:30:37,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-07-25 13:30:38,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 247. [2018-07-25 13:30:38,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-07-25 13:30:38,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 248 transitions. [2018-07-25 13:30:38,047 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 248 transitions. Word has length 244 [2018-07-25 13:30:38,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:38,047 INFO L472 AbstractCegarLoop]: Abstraction has 247 states and 248 transitions. [2018-07-25 13:30:38,047 INFO L473 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-07-25 13:30:38,047 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 248 transitions. [2018-07-25 13:30:38,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-07-25 13:30:38,048 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:38,048 INFO L354 BasicCegarLoop]: trace histogram [61, 61, 60, 60, 1, 1, 1, 1] [2018-07-25 13:30:38,048 INFO L415 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:38,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1362273871, now seen corresponding path program 119 times [2018-07-25 13:30:38,048 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:38,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:38,510 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 3660 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:38,511 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:38,511 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123] total 123 [2018-07-25 13:30:38,511 INFO L451 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-07-25 13:30:38,512 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-07-25 13:30:38,513 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3905, Invalid=11347, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 13:30:38,513 INFO L87 Difference]: Start difference. First operand 247 states and 248 transitions. Second operand 124 states. [2018-07-25 13:30:39,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:39,487 INFO L93 Difference]: Finished difference Result 374 states and 376 transitions. [2018-07-25 13:30:39,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-07-25 13:30:39,488 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 246 [2018-07-25 13:30:39,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:39,488 INFO L225 Difference]: With dead ends: 374 [2018-07-25 13:30:39,488 INFO L226 Difference]: Without dead ends: 249 [2018-07-25 13:30:39,490 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5430 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=7809, Invalid=26231, Unknown=0, NotChecked=0, Total=34040 [2018-07-25 13:30:39,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2018-07-25 13:30:39,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2018-07-25 13:30:39,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-07-25 13:30:39,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 250 transitions. [2018-07-25 13:30:39,577 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 250 transitions. Word has length 246 [2018-07-25 13:30:39,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:39,577 INFO L472 AbstractCegarLoop]: Abstraction has 249 states and 250 transitions. [2018-07-25 13:30:39,577 INFO L473 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-07-25 13:30:39,577 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 250 transitions. [2018-07-25 13:30:39,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-07-25 13:30:39,578 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:39,578 INFO L354 BasicCegarLoop]: trace histogram [62, 61, 61, 60, 1, 1, 1, 1] [2018-07-25 13:30:39,578 INFO L415 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:39,579 INFO L82 PathProgramCache]: Analyzing trace with hash -571654933, now seen corresponding path program 120 times [2018-07-25 13:30:39,579 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:39,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:39,837 INFO L134 CoverageAnalysis]: Checked inductivity of 7442 backedges. 3782 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:39,837 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:39,837 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-07-25 13:30:39,837 INFO L451 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-07-25 13:30:39,838 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-07-25 13:30:39,838 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2082, Invalid=2208, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 13:30:39,838 INFO L87 Difference]: Start difference. First operand 249 states and 250 transitions. Second operand 66 states. [2018-07-25 13:30:40,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:40,095 INFO L93 Difference]: Finished difference Result 257 states and 258 transitions. [2018-07-25 13:30:40,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-07-25 13:30:40,095 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 248 [2018-07-25 13:30:40,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:40,096 INFO L225 Difference]: With dead ends: 257 [2018-07-25 13:30:40,096 INFO L226 Difference]: Without dead ends: 255 [2018-07-25 13:30:40,098 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3844 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6113, Invalid=10143, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 13:30:40,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-07-25 13:30:40,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 251. [2018-07-25 13:30:40,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-07-25 13:30:40,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 252 transitions. [2018-07-25 13:30:40,182 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 252 transitions. Word has length 248 [2018-07-25 13:30:40,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:40,183 INFO L472 AbstractCegarLoop]: Abstraction has 251 states and 252 transitions. [2018-07-25 13:30:40,183 INFO L473 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-07-25 13:30:40,183 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 252 transitions. [2018-07-25 13:30:40,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-07-25 13:30:40,184 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:40,184 INFO L354 BasicCegarLoop]: trace histogram [62, 62, 61, 61, 1, 1, 1, 1] [2018-07-25 13:30:40,184 INFO L415 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:40,184 INFO L82 PathProgramCache]: Analyzing trace with hash 395356519, now seen corresponding path program 121 times [2018-07-25 13:30:40,184 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:40,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:40,654 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 3782 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:40,654 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:40,654 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125] total 125 [2018-07-25 13:30:40,655 INFO L451 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-07-25 13:30:40,655 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-07-25 13:30:40,656 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4031, Invalid=11719, Unknown=0, NotChecked=0, Total=15750 [2018-07-25 13:30:40,657 INFO L87 Difference]: Start difference. First operand 251 states and 252 transitions. Second operand 126 states. [2018-07-25 13:30:41,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:41,662 INFO L93 Difference]: Finished difference Result 380 states and 382 transitions. [2018-07-25 13:30:41,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-07-25 13:30:41,662 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 250 [2018-07-25 13:30:41,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:41,662 INFO L225 Difference]: With dead ends: 380 [2018-07-25 13:30:41,663 INFO L226 Difference]: Without dead ends: 253 [2018-07-25 13:30:41,666 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5612 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=8061, Invalid=27095, Unknown=0, NotChecked=0, Total=35156 [2018-07-25 13:30:41,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-07-25 13:30:41,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2018-07-25 13:30:41,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-07-25 13:30:41,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 254 transitions. [2018-07-25 13:30:41,751 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 254 transitions. Word has length 250 [2018-07-25 13:30:41,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:41,751 INFO L472 AbstractCegarLoop]: Abstraction has 253 states and 254 transitions. [2018-07-25 13:30:41,751 INFO L473 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-07-25 13:30:41,752 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 254 transitions. [2018-07-25 13:30:41,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-07-25 13:30:41,752 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:41,753 INFO L354 BasicCegarLoop]: trace histogram [63, 62, 62, 61, 1, 1, 1, 1] [2018-07-25 13:30:41,753 INFO L415 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:41,753 INFO L82 PathProgramCache]: Analyzing trace with hash 557342625, now seen corresponding path program 122 times [2018-07-25 13:30:41,753 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:41,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:42,024 INFO L134 CoverageAnalysis]: Checked inductivity of 7688 backedges. 3906 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:42,025 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:42,025 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-07-25 13:30:42,025 INFO L451 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-07-25 13:30:42,025 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-07-25 13:30:42,025 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 13:30:42,026 INFO L87 Difference]: Start difference. First operand 253 states and 254 transitions. Second operand 67 states. [2018-07-25 13:30:42,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:42,301 INFO L93 Difference]: Finished difference Result 261 states and 262 transitions. [2018-07-25 13:30:42,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-07-25 13:30:42,301 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 252 [2018-07-25 13:30:42,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:42,302 INFO L225 Difference]: With dead ends: 261 [2018-07-25 13:30:42,302 INFO L226 Difference]: Without dead ends: 259 [2018-07-25 13:30:42,303 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3969 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6306, Invalid=10464, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 13:30:42,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-07-25 13:30:42,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 255. [2018-07-25 13:30:42,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-07-25 13:30:42,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 256 transitions. [2018-07-25 13:30:42,381 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 256 transitions. Word has length 252 [2018-07-25 13:30:42,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:42,381 INFO L472 AbstractCegarLoop]: Abstraction has 255 states and 256 transitions. [2018-07-25 13:30:42,381 INFO L473 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-07-25 13:30:42,381 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 256 transitions. [2018-07-25 13:30:42,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-07-25 13:30:42,382 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:42,382 INFO L354 BasicCegarLoop]: trace histogram [63, 63, 62, 62, 1, 1, 1, 1] [2018-07-25 13:30:42,382 INFO L415 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:42,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1264716131, now seen corresponding path program 123 times [2018-07-25 13:30:42,382 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:42,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:42,861 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 3906 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:42,861 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:42,861 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127] total 127 [2018-07-25 13:30:42,861 INFO L451 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-07-25 13:30:42,862 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-07-25 13:30:42,863 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4159, Invalid=12097, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 13:30:42,863 INFO L87 Difference]: Start difference. First operand 255 states and 256 transitions. Second operand 128 states. [2018-07-25 13:30:43,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:43,829 INFO L93 Difference]: Finished difference Result 386 states and 388 transitions. [2018-07-25 13:30:43,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-07-25 13:30:43,829 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 254 [2018-07-25 13:30:43,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:43,829 INFO L225 Difference]: With dead ends: 386 [2018-07-25 13:30:43,830 INFO L226 Difference]: Without dead ends: 257 [2018-07-25 13:30:43,832 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5797 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=8317, Invalid=27973, Unknown=0, NotChecked=0, Total=36290 [2018-07-25 13:30:43,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2018-07-25 13:30:43,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2018-07-25 13:30:43,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2018-07-25 13:30:43,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 258 transitions. [2018-07-25 13:30:43,915 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 258 transitions. Word has length 254 [2018-07-25 13:30:43,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:43,915 INFO L472 AbstractCegarLoop]: Abstraction has 257 states and 258 transitions. [2018-07-25 13:30:43,915 INFO L473 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-07-25 13:30:43,916 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 258 transitions. [2018-07-25 13:30:43,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-07-25 13:30:43,916 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:43,916 INFO L354 BasicCegarLoop]: trace histogram [64, 63, 63, 62, 1, 1, 1, 1] [2018-07-25 13:30:43,917 INFO L415 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:43,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1700003881, now seen corresponding path program 124 times [2018-07-25 13:30:43,917 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:43,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:44,249 INFO L134 CoverageAnalysis]: Checked inductivity of 7938 backedges. 4032 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:44,250 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:44,250 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-25 13:30:44,250 INFO L451 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-25 13:30:44,251 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-25 13:30:44,251 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2213, Invalid=2343, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 13:30:44,251 INFO L87 Difference]: Start difference. First operand 257 states and 258 transitions. Second operand 68 states. [2018-07-25 13:30:44,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:44,552 INFO L93 Difference]: Finished difference Result 265 states and 266 transitions. [2018-07-25 13:30:44,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-07-25 13:30:44,552 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 256 [2018-07-25 13:30:44,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:44,553 INFO L225 Difference]: With dead ends: 265 [2018-07-25 13:30:44,553 INFO L226 Difference]: Without dead ends: 263 [2018-07-25 13:30:44,555 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4096 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6502, Invalid=10790, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 13:30:44,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-07-25 13:30:44,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 259. [2018-07-25 13:30:44,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-07-25 13:30:44,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 260 transitions. [2018-07-25 13:30:44,639 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 260 transitions. Word has length 256 [2018-07-25 13:30:44,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:44,640 INFO L472 AbstractCegarLoop]: Abstraction has 259 states and 260 transitions. [2018-07-25 13:30:44,640 INFO L473 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-25 13:30:44,640 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 260 transitions. [2018-07-25 13:30:44,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-07-25 13:30:44,641 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:44,641 INFO L354 BasicCegarLoop]: trace histogram [64, 64, 63, 63, 1, 1, 1, 1] [2018-07-25 13:30:44,641 INFO L415 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:44,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1616223917, now seen corresponding path program 125 times [2018-07-25 13:30:44,642 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:44,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:45,143 INFO L134 CoverageAnalysis]: Checked inductivity of 8064 backedges. 4032 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:45,143 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:45,144 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129] total 129 [2018-07-25 13:30:45,144 INFO L451 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-07-25 13:30:45,145 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-07-25 13:30:45,146 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4289, Invalid=12481, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 13:30:45,146 INFO L87 Difference]: Start difference. First operand 259 states and 260 transitions. Second operand 130 states. [2018-07-25 13:30:46,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:46,205 INFO L93 Difference]: Finished difference Result 392 states and 394 transitions. [2018-07-25 13:30:46,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-07-25 13:30:46,205 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 258 [2018-07-25 13:30:46,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:46,206 INFO L225 Difference]: With dead ends: 392 [2018-07-25 13:30:46,206 INFO L226 Difference]: Without dead ends: 261 [2018-07-25 13:30:46,209 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5985 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=8577, Invalid=28865, Unknown=0, NotChecked=0, Total=37442 [2018-07-25 13:30:46,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2018-07-25 13:30:46,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2018-07-25 13:30:46,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2018-07-25 13:30:46,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 262 transitions. [2018-07-25 13:30:46,295 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 262 transitions. Word has length 258 [2018-07-25 13:30:46,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:46,295 INFO L472 AbstractCegarLoop]: Abstraction has 261 states and 262 transitions. [2018-07-25 13:30:46,295 INFO L473 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-07-25 13:30:46,295 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 262 transitions. [2018-07-25 13:30:46,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-07-25 13:30:46,296 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:46,296 INFO L354 BasicCegarLoop]: trace histogram [65, 64, 64, 63, 1, 1, 1, 1] [2018-07-25 13:30:46,297 INFO L415 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:46,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1354579341, now seen corresponding path program 126 times [2018-07-25 13:30:46,297 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:46,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:46,598 INFO L134 CoverageAnalysis]: Checked inductivity of 8192 backedges. 4160 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:46,598 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:46,598 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-07-25 13:30:46,599 INFO L451 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-07-25 13:30:46,599 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-07-25 13:30:46,600 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2280, Invalid=2412, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 13:30:46,600 INFO L87 Difference]: Start difference. First operand 261 states and 262 transitions. Second operand 69 states. [2018-07-25 13:30:46,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:46,914 INFO L93 Difference]: Finished difference Result 269 states and 270 transitions. [2018-07-25 13:30:46,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-07-25 13:30:46,914 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 260 [2018-07-25 13:30:46,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:46,915 INFO L225 Difference]: With dead ends: 269 [2018-07-25 13:30:46,915 INFO L226 Difference]: Without dead ends: 267 [2018-07-25 13:30:46,917 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4225 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6701, Invalid=11121, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 13:30:46,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-07-25 13:30:47,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 263. [2018-07-25 13:30:47,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2018-07-25 13:30:47,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 264 transitions. [2018-07-25 13:30:47,006 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 264 transitions. Word has length 260 [2018-07-25 13:30:47,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:47,007 INFO L472 AbstractCegarLoop]: Abstraction has 263 states and 264 transitions. [2018-07-25 13:30:47,007 INFO L473 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-07-25 13:30:47,007 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 264 transitions. [2018-07-25 13:30:47,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-07-25 13:30:47,008 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:47,008 INFO L354 BasicCegarLoop]: trace histogram [65, 65, 64, 64, 1, 1, 1, 1] [2018-07-25 13:30:47,008 INFO L415 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:47,009 INFO L82 PathProgramCache]: Analyzing trace with hash 375589257, now seen corresponding path program 127 times [2018-07-25 13:30:47,009 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:47,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:47,594 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 4160 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:47,594 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:47,594 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131] total 131 [2018-07-25 13:30:47,595 INFO L451 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-07-25 13:30:47,595 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-07-25 13:30:47,596 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4421, Invalid=12871, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 13:30:47,596 INFO L87 Difference]: Start difference. First operand 263 states and 264 transitions. Second operand 132 states. [2018-07-25 13:30:48,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:48,528 INFO L93 Difference]: Finished difference Result 398 states and 400 transitions. [2018-07-25 13:30:48,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-07-25 13:30:48,528 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 262 [2018-07-25 13:30:48,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:48,529 INFO L225 Difference]: With dead ends: 398 [2018-07-25 13:30:48,529 INFO L226 Difference]: Without dead ends: 265 [2018-07-25 13:30:48,532 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6176 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=8841, Invalid=29771, Unknown=0, NotChecked=0, Total=38612 [2018-07-25 13:30:48,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2018-07-25 13:30:48,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2018-07-25 13:30:48,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2018-07-25 13:30:48,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 266 transitions. [2018-07-25 13:30:48,609 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 266 transitions. Word has length 262 [2018-07-25 13:30:48,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:48,610 INFO L472 AbstractCegarLoop]: Abstraction has 265 states and 266 transitions. [2018-07-25 13:30:48,610 INFO L473 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-07-25 13:30:48,610 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 266 transitions. [2018-07-25 13:30:48,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-07-25 13:30:48,611 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:48,611 INFO L354 BasicCegarLoop]: trace histogram [66, 65, 65, 64, 1, 1, 1, 1] [2018-07-25 13:30:48,611 INFO L415 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:48,611 INFO L82 PathProgramCache]: Analyzing trace with hash 232339651, now seen corresponding path program 128 times [2018-07-25 13:30:48,612 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:48,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:48,865 INFO L134 CoverageAnalysis]: Checked inductivity of 8450 backedges. 4290 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:48,865 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:48,865 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-07-25 13:30:48,866 INFO L451 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-07-25 13:30:48,866 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-07-25 13:30:48,866 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2348, Invalid=2482, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 13:30:48,866 INFO L87 Difference]: Start difference. First operand 265 states and 266 transitions. Second operand 70 states. [2018-07-25 13:30:49,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:49,154 INFO L93 Difference]: Finished difference Result 273 states and 274 transitions. [2018-07-25 13:30:49,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2018-07-25 13:30:49,155 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 264 [2018-07-25 13:30:49,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:49,155 INFO L225 Difference]: With dead ends: 273 [2018-07-25 13:30:49,155 INFO L226 Difference]: Without dead ends: 271 [2018-07-25 13:30:49,157 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4356 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6903, Invalid=11457, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 13:30:49,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2018-07-25 13:30:49,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 267. [2018-07-25 13:30:49,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2018-07-25 13:30:49,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 268 transitions. [2018-07-25 13:30:49,237 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 268 transitions. Word has length 264 [2018-07-25 13:30:49,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:49,237 INFO L472 AbstractCegarLoop]: Abstraction has 267 states and 268 transitions. [2018-07-25 13:30:49,237 INFO L473 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-07-25 13:30:49,237 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 268 transitions. [2018-07-25 13:30:49,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-07-25 13:30:49,238 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:49,238 INFO L354 BasicCegarLoop]: trace histogram [66, 66, 65, 65, 1, 1, 1, 1] [2018-07-25 13:30:49,238 INFO L415 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:49,238 INFO L82 PathProgramCache]: Analyzing trace with hash -59961537, now seen corresponding path program 129 times [2018-07-25 13:30:49,238 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:49,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:49,742 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 4290 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:49,742 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:49,743 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [133] total 133 [2018-07-25 13:30:49,743 INFO L451 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-07-25 13:30:49,743 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-07-25 13:30:49,745 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4555, Invalid=13267, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 13:30:49,745 INFO L87 Difference]: Start difference. First operand 267 states and 268 transitions. Second operand 134 states. [2018-07-25 13:30:50,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:50,847 INFO L93 Difference]: Finished difference Result 404 states and 406 transitions. [2018-07-25 13:30:50,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-07-25 13:30:50,847 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 266 [2018-07-25 13:30:50,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:50,848 INFO L225 Difference]: With dead ends: 404 [2018-07-25 13:30:50,848 INFO L226 Difference]: Without dead ends: 269 [2018-07-25 13:30:50,853 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6370 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9109, Invalid=30691, Unknown=0, NotChecked=0, Total=39800 [2018-07-25 13:30:50,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2018-07-25 13:30:50,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2018-07-25 13:30:50,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2018-07-25 13:30:50,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 270 transitions. [2018-07-25 13:30:50,945 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 270 transitions. Word has length 266 [2018-07-25 13:30:50,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:50,945 INFO L472 AbstractCegarLoop]: Abstraction has 269 states and 270 transitions. [2018-07-25 13:30:50,945 INFO L473 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-07-25 13:30:50,945 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 270 transitions. [2018-07-25 13:30:50,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-07-25 13:30:50,946 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:50,946 INFO L354 BasicCegarLoop]: trace histogram [67, 66, 66, 65, 1, 1, 1, 1] [2018-07-25 13:30:50,946 INFO L415 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:50,946 INFO L82 PathProgramCache]: Analyzing trace with hash -496692871, now seen corresponding path program 130 times [2018-07-25 13:30:50,946 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:51,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:51,245 INFO L134 CoverageAnalysis]: Checked inductivity of 8712 backedges. 4422 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:51,245 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:51,246 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-07-25 13:30:51,246 INFO L451 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-07-25 13:30:51,246 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-07-25 13:30:51,247 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 13:30:51,247 INFO L87 Difference]: Start difference. First operand 269 states and 270 transitions. Second operand 71 states. [2018-07-25 13:30:51,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:51,550 INFO L93 Difference]: Finished difference Result 277 states and 278 transitions. [2018-07-25 13:30:51,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-07-25 13:30:51,551 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 268 [2018-07-25 13:30:51,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:51,551 INFO L225 Difference]: With dead ends: 277 [2018-07-25 13:30:51,552 INFO L226 Difference]: Without dead ends: 275 [2018-07-25 13:30:51,554 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4489 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7108, Invalid=11798, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 13:30:51,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2018-07-25 13:30:51,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 271. [2018-07-25 13:30:51,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-07-25 13:30:51,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 272 transitions. [2018-07-25 13:30:51,650 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 272 transitions. Word has length 268 [2018-07-25 13:30:51,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:51,650 INFO L472 AbstractCegarLoop]: Abstraction has 271 states and 272 transitions. [2018-07-25 13:30:51,650 INFO L473 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-07-25 13:30:51,650 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 272 transitions. [2018-07-25 13:30:51,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-07-25 13:30:51,651 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:51,651 INFO L354 BasicCegarLoop]: trace histogram [67, 67, 66, 66, 1, 1, 1, 1] [2018-07-25 13:30:51,651 INFO L415 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:51,651 INFO L82 PathProgramCache]: Analyzing trace with hash -580545931, now seen corresponding path program 131 times [2018-07-25 13:30:51,652 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:51,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:52,223 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 4422 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:52,223 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:52,223 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [135] total 135 [2018-07-25 13:30:52,224 INFO L451 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-07-25 13:30:52,224 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-07-25 13:30:52,225 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4691, Invalid=13669, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 13:30:52,226 INFO L87 Difference]: Start difference. First operand 271 states and 272 transitions. Second operand 136 states. [2018-07-25 13:30:52,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:52,954 INFO L93 Difference]: Finished difference Result 410 states and 412 transitions. [2018-07-25 13:30:52,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-07-25 13:30:52,954 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 270 [2018-07-25 13:30:52,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:52,955 INFO L225 Difference]: With dead ends: 410 [2018-07-25 13:30:52,955 INFO L226 Difference]: Without dead ends: 273 [2018-07-25 13:30:52,960 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6567 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9381, Invalid=31625, Unknown=0, NotChecked=0, Total=41006 [2018-07-25 13:30:52,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2018-07-25 13:30:53,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2018-07-25 13:30:53,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2018-07-25 13:30:53,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 274 transitions. [2018-07-25 13:30:53,053 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 274 transitions. Word has length 270 [2018-07-25 13:30:53,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:53,053 INFO L472 AbstractCegarLoop]: Abstraction has 273 states and 274 transitions. [2018-07-25 13:30:53,053 INFO L473 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-07-25 13:30:53,053 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 274 transitions. [2018-07-25 13:30:53,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-07-25 13:30:53,054 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:53,054 INFO L354 BasicCegarLoop]: trace histogram [68, 67, 67, 66, 1, 1, 1, 1] [2018-07-25 13:30:53,054 INFO L415 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:53,054 INFO L82 PathProgramCache]: Analyzing trace with hash 649979823, now seen corresponding path program 132 times [2018-07-25 13:30:53,054 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:53,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:53,408 INFO L134 CoverageAnalysis]: Checked inductivity of 8978 backedges. 4556 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:53,408 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:53,408 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-25 13:30:53,409 INFO L451 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-25 13:30:53,409 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-25 13:30:53,409 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2487, Invalid=2625, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 13:30:53,409 INFO L87 Difference]: Start difference. First operand 273 states and 274 transitions. Second operand 72 states. [2018-07-25 13:30:53,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:53,717 INFO L93 Difference]: Finished difference Result 281 states and 282 transitions. [2018-07-25 13:30:53,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-07-25 13:30:53,717 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 272 [2018-07-25 13:30:53,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:53,718 INFO L225 Difference]: With dead ends: 281 [2018-07-25 13:30:53,718 INFO L226 Difference]: Without dead ends: 279 [2018-07-25 13:30:53,720 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4624 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7316, Invalid=12144, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 13:30:53,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2018-07-25 13:30:53,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 275. [2018-07-25 13:30:53,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2018-07-25 13:30:53,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 276 transitions. [2018-07-25 13:30:53,823 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 276 transitions. Word has length 272 [2018-07-25 13:30:53,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:53,824 INFO L472 AbstractCegarLoop]: Abstraction has 275 states and 276 transitions. [2018-07-25 13:30:53,824 INFO L473 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-25 13:30:53,824 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 276 transitions. [2018-07-25 13:30:53,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-07-25 13:30:53,825 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:53,825 INFO L354 BasicCegarLoop]: trace histogram [68, 68, 67, 67, 1, 1, 1, 1] [2018-07-25 13:30:53,825 INFO L415 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:53,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1860285227, now seen corresponding path program 133 times [2018-07-25 13:30:53,826 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:53,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:54,418 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 4556 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:54,418 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:54,419 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [137] total 137 [2018-07-25 13:30:54,419 INFO L451 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-07-25 13:30:54,420 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-07-25 13:30:54,421 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4829, Invalid=14077, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 13:30:54,421 INFO L87 Difference]: Start difference. First operand 275 states and 276 transitions. Second operand 138 states. [2018-07-25 13:30:55,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:55,643 INFO L93 Difference]: Finished difference Result 416 states and 418 transitions. [2018-07-25 13:30:55,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2018-07-25 13:30:55,643 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 274 [2018-07-25 13:30:55,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:55,644 INFO L225 Difference]: With dead ends: 416 [2018-07-25 13:30:55,644 INFO L226 Difference]: Without dead ends: 277 [2018-07-25 13:30:55,649 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6767 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9657, Invalid=32573, Unknown=0, NotChecked=0, Total=42230 [2018-07-25 13:30:55,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2018-07-25 13:30:55,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2018-07-25 13:30:55,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2018-07-25 13:30:55,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 278 transitions. [2018-07-25 13:30:55,779 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 278 transitions. Word has length 274 [2018-07-25 13:30:55,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:55,779 INFO L472 AbstractCegarLoop]: Abstraction has 277 states and 278 transitions. [2018-07-25 13:30:55,779 INFO L473 AbstractCegarLoop]: Interpolant automaton has 138 states. [2018-07-25 13:30:55,779 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 278 transitions. [2018-07-25 13:30:55,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-07-25 13:30:55,780 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:55,780 INFO L354 BasicCegarLoop]: trace histogram [69, 68, 68, 67, 1, 1, 1, 1] [2018-07-25 13:30:55,780 INFO L415 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:55,781 INFO L82 PathProgramCache]: Analyzing trace with hash -46605467, now seen corresponding path program 134 times [2018-07-25 13:30:55,781 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:55,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:56,155 INFO L134 CoverageAnalysis]: Checked inductivity of 9248 backedges. 4692 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:56,155 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:56,155 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-07-25 13:30:56,156 INFO L451 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-07-25 13:30:56,156 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-07-25 13:30:56,156 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2558, Invalid=2698, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 13:30:56,157 INFO L87 Difference]: Start difference. First operand 277 states and 278 transitions. Second operand 73 states. [2018-07-25 13:30:56,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:56,491 INFO L93 Difference]: Finished difference Result 285 states and 286 transitions. [2018-07-25 13:30:56,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2018-07-25 13:30:56,491 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 276 [2018-07-25 13:30:56,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:56,492 INFO L225 Difference]: With dead ends: 285 [2018-07-25 13:30:56,492 INFO L226 Difference]: Without dead ends: 283 [2018-07-25 13:30:56,493 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4761 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7527, Invalid=12495, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 13:30:56,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-07-25 13:30:56,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 279. [2018-07-25 13:30:56,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2018-07-25 13:30:56,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 280 transitions. [2018-07-25 13:30:56,591 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 280 transitions. Word has length 276 [2018-07-25 13:30:56,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:56,591 INFO L472 AbstractCegarLoop]: Abstraction has 279 states and 280 transitions. [2018-07-25 13:30:56,591 INFO L473 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-07-25 13:30:56,591 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 280 transitions. [2018-07-25 13:30:56,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-07-25 13:30:56,592 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:56,592 INFO L354 BasicCegarLoop]: trace histogram [69, 69, 68, 68, 1, 1, 1, 1] [2018-07-25 13:30:56,592 INFO L415 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:56,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1838247583, now seen corresponding path program 135 times [2018-07-25 13:30:56,592 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:56,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:57,178 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 4692 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:57,179 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:57,179 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [139] total 139 [2018-07-25 13:30:57,179 INFO L451 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-07-25 13:30:57,180 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-07-25 13:30:57,181 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4969, Invalid=14491, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 13:30:57,182 INFO L87 Difference]: Start difference. First operand 279 states and 280 transitions. Second operand 140 states. [2018-07-25 13:30:58,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:58,442 INFO L93 Difference]: Finished difference Result 422 states and 424 transitions. [2018-07-25 13:30:58,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-07-25 13:30:58,442 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 278 [2018-07-25 13:30:58,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:58,443 INFO L225 Difference]: With dead ends: 422 [2018-07-25 13:30:58,443 INFO L226 Difference]: Without dead ends: 281 [2018-07-25 13:30:58,448 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6970 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9937, Invalid=33535, Unknown=0, NotChecked=0, Total=43472 [2018-07-25 13:30:58,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2018-07-25 13:30:58,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2018-07-25 13:30:58,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2018-07-25 13:30:58,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 282 transitions. [2018-07-25 13:30:58,599 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 282 transitions. Word has length 278 [2018-07-25 13:30:58,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:58,600 INFO L472 AbstractCegarLoop]: Abstraction has 281 states and 282 transitions. [2018-07-25 13:30:58,600 INFO L473 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-07-25 13:30:58,600 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 282 transitions. [2018-07-25 13:30:58,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2018-07-25 13:30:58,601 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:58,601 INFO L354 BasicCegarLoop]: trace histogram [70, 69, 69, 68, 1, 1, 1, 1] [2018-07-25 13:30:58,601 INFO L415 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:58,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1411583131, now seen corresponding path program 136 times [2018-07-25 13:30:58,602 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:58,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:58,948 INFO L134 CoverageAnalysis]: Checked inductivity of 9522 backedges. 4830 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:30:58,949 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:58,949 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-07-25 13:30:58,949 INFO L451 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-07-25 13:30:58,950 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-07-25 13:30:58,950 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2630, Invalid=2772, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 13:30:58,950 INFO L87 Difference]: Start difference. First operand 281 states and 282 transitions. Second operand 74 states. [2018-07-25 13:30:59,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:59,300 INFO L93 Difference]: Finished difference Result 289 states and 290 transitions. [2018-07-25 13:30:59,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2018-07-25 13:30:59,301 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 280 [2018-07-25 13:30:59,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:59,301 INFO L225 Difference]: With dead ends: 289 [2018-07-25 13:30:59,302 INFO L226 Difference]: Without dead ends: 287 [2018-07-25 13:30:59,304 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4900 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7741, Invalid=12851, Unknown=0, NotChecked=0, Total=20592 [2018-07-25 13:30:59,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2018-07-25 13:30:59,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 283. [2018-07-25 13:30:59,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2018-07-25 13:30:59,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 284 transitions. [2018-07-25 13:30:59,407 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 284 transitions. Word has length 280 [2018-07-25 13:30:59,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:59,407 INFO L472 AbstractCegarLoop]: Abstraction has 283 states and 284 transitions. [2018-07-25 13:30:59,407 INFO L473 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-07-25 13:30:59,408 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 284 transitions. [2018-07-25 13:30:59,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-07-25 13:30:59,408 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:59,408 INFO L354 BasicCegarLoop]: trace histogram [70, 70, 69, 69, 1, 1, 1, 1] [2018-07-25 13:30:59,409 INFO L415 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:59,409 INFO L82 PathProgramCache]: Analyzing trace with hash -678343401, now seen corresponding path program 137 times [2018-07-25 13:30:59,409 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:59,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:00,019 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 4830 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:00,019 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:00,020 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [141] total 141 [2018-07-25 13:31:00,020 INFO L451 AbstractCegarLoop]: Interpolant automaton has 142 states [2018-07-25 13:31:00,021 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2018-07-25 13:31:00,022 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5111, Invalid=14911, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 13:31:00,022 INFO L87 Difference]: Start difference. First operand 283 states and 284 transitions. Second operand 142 states. [2018-07-25 13:31:01,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:01,101 INFO L93 Difference]: Finished difference Result 428 states and 430 transitions. [2018-07-25 13:31:01,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-07-25 13:31:01,101 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 282 [2018-07-25 13:31:01,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:01,102 INFO L225 Difference]: With dead ends: 428 [2018-07-25 13:31:01,102 INFO L226 Difference]: Without dead ends: 285 [2018-07-25 13:31:01,105 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7176 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=10221, Invalid=34511, Unknown=0, NotChecked=0, Total=44732 [2018-07-25 13:31:01,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2018-07-25 13:31:01,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2018-07-25 13:31:01,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2018-07-25 13:31:01,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 286 transitions. [2018-07-25 13:31:01,206 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 286 transitions. Word has length 282 [2018-07-25 13:31:01,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:01,206 INFO L472 AbstractCegarLoop]: Abstraction has 285 states and 286 transitions. [2018-07-25 13:31:01,206 INFO L473 AbstractCegarLoop]: Interpolant automaton has 142 states. [2018-07-25 13:31:01,206 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 286 transitions. [2018-07-25 13:31:01,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-07-25 13:31:01,207 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:01,207 INFO L354 BasicCegarLoop]: trace histogram [71, 70, 70, 69, 1, 1, 1, 1] [2018-07-25 13:31:01,207 INFO L415 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:01,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1740741457, now seen corresponding path program 138 times [2018-07-25 13:31:01,207 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:01,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:01,571 INFO L134 CoverageAnalysis]: Checked inductivity of 9800 backedges. 4970 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:01,572 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:01,572 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2018-07-25 13:31:01,572 INFO L451 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-07-25 13:31:01,572 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-07-25 13:31:01,573 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 13:31:01,573 INFO L87 Difference]: Start difference. First operand 285 states and 286 transitions. Second operand 75 states. [2018-07-25 13:31:01,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:01,900 INFO L93 Difference]: Finished difference Result 293 states and 294 transitions. [2018-07-25 13:31:01,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2018-07-25 13:31:01,900 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 284 [2018-07-25 13:31:01,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:01,901 INFO L225 Difference]: With dead ends: 293 [2018-07-25 13:31:01,901 INFO L226 Difference]: Without dead ends: 291 [2018-07-25 13:31:01,903 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5041 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7958, Invalid=13212, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 13:31:01,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2018-07-25 13:31:02,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 287. [2018-07-25 13:31:02,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2018-07-25 13:31:02,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 288 transitions. [2018-07-25 13:31:02,008 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 288 transitions. Word has length 284 [2018-07-25 13:31:02,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:02,008 INFO L472 AbstractCegarLoop]: Abstraction has 287 states and 288 transitions. [2018-07-25 13:31:02,008 INFO L473 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-07-25 13:31:02,008 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 288 transitions. [2018-07-25 13:31:02,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-07-25 13:31:02,009 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:02,009 INFO L354 BasicCegarLoop]: trace histogram [71, 71, 70, 70, 1, 1, 1, 1] [2018-07-25 13:31:02,009 INFO L415 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:02,009 INFO L82 PathProgramCache]: Analyzing trace with hash 2110195277, now seen corresponding path program 139 times [2018-07-25 13:31:02,009 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:02,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:02,634 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 4970 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:02,634 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:02,634 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [143] total 143 [2018-07-25 13:31:02,634 INFO L451 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-07-25 13:31:02,635 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-07-25 13:31:02,636 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5255, Invalid=15337, Unknown=0, NotChecked=0, Total=20592 [2018-07-25 13:31:02,637 INFO L87 Difference]: Start difference. First operand 287 states and 288 transitions. Second operand 144 states. [2018-07-25 13:31:03,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:03,787 INFO L93 Difference]: Finished difference Result 434 states and 436 transitions. [2018-07-25 13:31:03,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2018-07-25 13:31:03,787 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 286 [2018-07-25 13:31:03,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:03,788 INFO L225 Difference]: With dead ends: 434 [2018-07-25 13:31:03,788 INFO L226 Difference]: Without dead ends: 289 [2018-07-25 13:31:03,791 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7385 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=10509, Invalid=35501, Unknown=0, NotChecked=0, Total=46010 [2018-07-25 13:31:03,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2018-07-25 13:31:03,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2018-07-25 13:31:03,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2018-07-25 13:31:03,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 290 transitions. [2018-07-25 13:31:03,883 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 290 transitions. Word has length 286 [2018-07-25 13:31:03,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:03,884 INFO L472 AbstractCegarLoop]: Abstraction has 289 states and 290 transitions. [2018-07-25 13:31:03,884 INFO L473 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-07-25 13:31:03,884 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 290 transitions. [2018-07-25 13:31:03,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-07-25 13:31:03,884 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:03,885 INFO L354 BasicCegarLoop]: trace histogram [72, 71, 71, 70, 1, 1, 1, 1] [2018-07-25 13:31:03,885 INFO L415 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:03,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1001281657, now seen corresponding path program 140 times [2018-07-25 13:31:03,885 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:03,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:04,189 INFO L134 CoverageAnalysis]: Checked inductivity of 10082 backedges. 5112 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:04,189 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:04,189 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-25 13:31:04,190 INFO L451 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-25 13:31:04,190 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-25 13:31:04,190 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2777, Invalid=2923, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 13:31:04,190 INFO L87 Difference]: Start difference. First operand 289 states and 290 transitions. Second operand 76 states. [2018-07-25 13:31:04,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:04,573 INFO L93 Difference]: Finished difference Result 297 states and 298 transitions. [2018-07-25 13:31:04,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2018-07-25 13:31:04,573 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 288 [2018-07-25 13:31:04,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:04,574 INFO L225 Difference]: With dead ends: 297 [2018-07-25 13:31:04,574 INFO L226 Difference]: Without dead ends: 295 [2018-07-25 13:31:04,576 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5184 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8178, Invalid=13578, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 13:31:04,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2018-07-25 13:31:04,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 291. [2018-07-25 13:31:04,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2018-07-25 13:31:04,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 292 transitions. [2018-07-25 13:31:04,682 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 292 transitions. Word has length 288 [2018-07-25 13:31:04,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:04,682 INFO L472 AbstractCegarLoop]: Abstraction has 291 states and 292 transitions. [2018-07-25 13:31:04,682 INFO L473 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-25 13:31:04,682 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 292 transitions. [2018-07-25 13:31:04,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-07-25 13:31:04,683 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:04,683 INFO L354 BasicCegarLoop]: trace histogram [72, 72, 71, 71, 1, 1, 1, 1] [2018-07-25 13:31:04,684 INFO L415 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:04,684 INFO L82 PathProgramCache]: Analyzing trace with hash -159064829, now seen corresponding path program 141 times [2018-07-25 13:31:04,684 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:04,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:05,315 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 5112 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:05,315 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:05,315 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [145] total 145 [2018-07-25 13:31:05,316 INFO L451 AbstractCegarLoop]: Interpolant automaton has 146 states [2018-07-25 13:31:05,317 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2018-07-25 13:31:05,318 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5401, Invalid=15769, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 13:31:05,318 INFO L87 Difference]: Start difference. First operand 291 states and 292 transitions. Second operand 146 states. [2018-07-25 13:31:06,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:06,533 INFO L93 Difference]: Finished difference Result 440 states and 442 transitions. [2018-07-25 13:31:06,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2018-07-25 13:31:06,533 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 290 [2018-07-25 13:31:06,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:06,534 INFO L225 Difference]: With dead ends: 440 [2018-07-25 13:31:06,534 INFO L226 Difference]: Without dead ends: 293 [2018-07-25 13:31:06,538 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7597 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=10801, Invalid=36505, Unknown=0, NotChecked=0, Total=47306 [2018-07-25 13:31:06,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-07-25 13:31:06,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2018-07-25 13:31:06,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-07-25 13:31:06,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 294 transitions. [2018-07-25 13:31:06,632 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 294 transitions. Word has length 290 [2018-07-25 13:31:06,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:06,632 INFO L472 AbstractCegarLoop]: Abstraction has 293 states and 294 transitions. [2018-07-25 13:31:06,632 INFO L473 AbstractCegarLoop]: Interpolant automaton has 146 states. [2018-07-25 13:31:06,632 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 294 transitions. [2018-07-25 13:31:06,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2018-07-25 13:31:06,633 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:06,633 INFO L354 BasicCegarLoop]: trace histogram [73, 72, 72, 71, 1, 1, 1, 1] [2018-07-25 13:31:06,633 INFO L415 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:06,633 INFO L82 PathProgramCache]: Analyzing trace with hash -938979011, now seen corresponding path program 142 times [2018-07-25 13:31:06,633 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:06,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:06,933 INFO L134 CoverageAnalysis]: Checked inductivity of 10368 backedges. 5256 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:06,933 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:06,933 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-07-25 13:31:06,934 INFO L451 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-07-25 13:31:06,934 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-07-25 13:31:06,934 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2852, Invalid=3000, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 13:31:06,935 INFO L87 Difference]: Start difference. First operand 293 states and 294 transitions. Second operand 77 states. [2018-07-25 13:31:07,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:07,279 INFO L93 Difference]: Finished difference Result 301 states and 302 transitions. [2018-07-25 13:31:07,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2018-07-25 13:31:07,279 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 292 [2018-07-25 13:31:07,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:07,280 INFO L225 Difference]: With dead ends: 301 [2018-07-25 13:31:07,280 INFO L226 Difference]: Without dead ends: 299 [2018-07-25 13:31:07,282 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5329 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8401, Invalid=13949, Unknown=0, NotChecked=0, Total=22350 [2018-07-25 13:31:07,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2018-07-25 13:31:07,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 295. [2018-07-25 13:31:07,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2018-07-25 13:31:07,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 296 transitions. [2018-07-25 13:31:07,382 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 296 transitions. Word has length 292 [2018-07-25 13:31:07,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:07,382 INFO L472 AbstractCegarLoop]: Abstraction has 295 states and 296 transitions. [2018-07-25 13:31:07,382 INFO L473 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-07-25 13:31:07,382 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 296 transitions. [2018-07-25 13:31:07,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-07-25 13:31:07,383 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:07,383 INFO L354 BasicCegarLoop]: trace histogram [73, 73, 72, 72, 1, 1, 1, 1] [2018-07-25 13:31:07,383 INFO L415 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:07,383 INFO L82 PathProgramCache]: Analyzing trace with hash -415764167, now seen corresponding path program 143 times [2018-07-25 13:31:07,383 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:07,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:07,997 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 5256 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:07,997 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:07,998 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [147] total 147 [2018-07-25 13:31:07,998 INFO L451 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-07-25 13:31:07,999 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-07-25 13:31:08,000 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5549, Invalid=16207, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 13:31:08,000 INFO L87 Difference]: Start difference. First operand 295 states and 296 transitions. Second operand 148 states. [2018-07-25 13:31:09,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:09,283 INFO L93 Difference]: Finished difference Result 446 states and 448 transitions. [2018-07-25 13:31:09,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-07-25 13:31:09,283 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 294 [2018-07-25 13:31:09,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:09,284 INFO L225 Difference]: With dead ends: 446 [2018-07-25 13:31:09,284 INFO L226 Difference]: Without dead ends: 297 [2018-07-25 13:31:09,287 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7812 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11097, Invalid=37523, Unknown=0, NotChecked=0, Total=48620 [2018-07-25 13:31:09,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2018-07-25 13:31:09,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2018-07-25 13:31:09,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2018-07-25 13:31:09,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 298 transitions. [2018-07-25 13:31:09,384 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 298 transitions. Word has length 294 [2018-07-25 13:31:09,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:09,384 INFO L472 AbstractCegarLoop]: Abstraction has 297 states and 298 transitions. [2018-07-25 13:31:09,384 INFO L473 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-07-25 13:31:09,385 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 298 transitions. [2018-07-25 13:31:09,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2018-07-25 13:31:09,385 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:09,385 INFO L354 BasicCegarLoop]: trace histogram [74, 73, 73, 72, 1, 1, 1, 1] [2018-07-25 13:31:09,386 INFO L415 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:09,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1525499789, now seen corresponding path program 144 times [2018-07-25 13:31:09,386 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:09,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:09,690 INFO L134 CoverageAnalysis]: Checked inductivity of 10658 backedges. 5402 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:09,691 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:09,691 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-07-25 13:31:09,691 INFO L451 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-07-25 13:31:09,691 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-07-25 13:31:09,692 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2928, Invalid=3078, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 13:31:09,692 INFO L87 Difference]: Start difference. First operand 297 states and 298 transitions. Second operand 78 states. [2018-07-25 13:31:10,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:10,025 INFO L93 Difference]: Finished difference Result 305 states and 306 transitions. [2018-07-25 13:31:10,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2018-07-25 13:31:10,025 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 296 [2018-07-25 13:31:10,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:10,026 INFO L225 Difference]: With dead ends: 305 [2018-07-25 13:31:10,026 INFO L226 Difference]: Without dead ends: 303 [2018-07-25 13:31:10,028 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5476 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8627, Invalid=14325, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 13:31:10,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2018-07-25 13:31:10,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 299. [2018-07-25 13:31:10,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-07-25 13:31:10,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 300 transitions. [2018-07-25 13:31:10,128 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 300 transitions. Word has length 296 [2018-07-25 13:31:10,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:10,128 INFO L472 AbstractCegarLoop]: Abstraction has 299 states and 300 transitions. [2018-07-25 13:31:10,128 INFO L473 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-07-25 13:31:10,128 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 300 transitions. [2018-07-25 13:31:10,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-07-25 13:31:10,129 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:10,129 INFO L354 BasicCegarLoop]: trace histogram [74, 74, 73, 73, 1, 1, 1, 1] [2018-07-25 13:31:10,129 INFO L415 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:10,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1421516049, now seen corresponding path program 145 times [2018-07-25 13:31:10,129 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:10,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:10,743 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 5402 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:10,744 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:10,744 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [149] total 149 [2018-07-25 13:31:10,744 INFO L451 AbstractCegarLoop]: Interpolant automaton has 150 states [2018-07-25 13:31:10,745 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2018-07-25 13:31:10,746 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5699, Invalid=16651, Unknown=0, NotChecked=0, Total=22350 [2018-07-25 13:31:10,747 INFO L87 Difference]: Start difference. First operand 299 states and 300 transitions. Second operand 150 states. [2018-07-25 13:31:12,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:12,088 INFO L93 Difference]: Finished difference Result 452 states and 454 transitions. [2018-07-25 13:31:12,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2018-07-25 13:31:12,088 INFO L78 Accepts]: Start accepts. Automaton has 150 states. Word has length 298 [2018-07-25 13:31:12,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:12,089 INFO L225 Difference]: With dead ends: 452 [2018-07-25 13:31:12,089 INFO L226 Difference]: Without dead ends: 301 [2018-07-25 13:31:12,094 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8030 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11397, Invalid=38555, Unknown=0, NotChecked=0, Total=49952 [2018-07-25 13:31:12,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2018-07-25 13:31:12,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2018-07-25 13:31:12,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2018-07-25 13:31:12,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 302 transitions. [2018-07-25 13:31:12,198 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 302 transitions. Word has length 298 [2018-07-25 13:31:12,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:12,199 INFO L472 AbstractCegarLoop]: Abstraction has 301 states and 302 transitions. [2018-07-25 13:31:12,199 INFO L473 AbstractCegarLoop]: Interpolant automaton has 150 states. [2018-07-25 13:31:12,199 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 302 transitions. [2018-07-25 13:31:12,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-07-25 13:31:12,199 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:12,200 INFO L354 BasicCegarLoop]: trace histogram [75, 74, 74, 73, 1, 1, 1, 1] [2018-07-25 13:31:12,200 INFO L415 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:12,200 INFO L82 PathProgramCache]: Analyzing trace with hash -476709591, now seen corresponding path program 146 times [2018-07-25 13:31:12,200 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:12,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:12,586 INFO L134 CoverageAnalysis]: Checked inductivity of 10952 backedges. 5550 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:12,586 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:12,586 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2018-07-25 13:31:12,587 INFO L451 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-07-25 13:31:12,587 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-07-25 13:31:12,587 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 13:31:12,587 INFO L87 Difference]: Start difference. First operand 301 states and 302 transitions. Second operand 79 states. [2018-07-25 13:31:12,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:12,945 INFO L93 Difference]: Finished difference Result 309 states and 310 transitions. [2018-07-25 13:31:12,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2018-07-25 13:31:12,945 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 300 [2018-07-25 13:31:12,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:12,946 INFO L225 Difference]: With dead ends: 309 [2018-07-25 13:31:12,946 INFO L226 Difference]: Without dead ends: 307 [2018-07-25 13:31:12,949 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5625 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8856, Invalid=14706, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 13:31:12,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2018-07-25 13:31:13,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 303. [2018-07-25 13:31:13,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2018-07-25 13:31:13,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 304 transitions. [2018-07-25 13:31:13,111 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 304 transitions. Word has length 300 [2018-07-25 13:31:13,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:13,112 INFO L472 AbstractCegarLoop]: Abstraction has 303 states and 304 transitions. [2018-07-25 13:31:13,112 INFO L473 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-07-25 13:31:13,112 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 304 transitions. [2018-07-25 13:31:13,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-07-25 13:31:13,113 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:13,113 INFO L354 BasicCegarLoop]: trace histogram [75, 75, 74, 74, 1, 1, 1, 1] [2018-07-25 13:31:13,113 INFO L415 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:13,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1443516965, now seen corresponding path program 147 times [2018-07-25 13:31:13,113 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:13,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:13,815 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 5550 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:13,815 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:13,815 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [151] total 151 [2018-07-25 13:31:13,815 INFO L451 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-07-25 13:31:13,816 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-07-25 13:31:13,818 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5851, Invalid=17101, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 13:31:13,818 INFO L87 Difference]: Start difference. First operand 303 states and 304 transitions. Second operand 152 states. [2018-07-25 13:31:14,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:14,975 INFO L93 Difference]: Finished difference Result 458 states and 460 transitions. [2018-07-25 13:31:14,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2018-07-25 13:31:14,976 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 302 [2018-07-25 13:31:14,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:14,976 INFO L225 Difference]: With dead ends: 458 [2018-07-25 13:31:14,976 INFO L226 Difference]: Without dead ends: 305 [2018-07-25 13:31:14,981 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8251 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11701, Invalid=39601, Unknown=0, NotChecked=0, Total=51302 [2018-07-25 13:31:14,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2018-07-25 13:31:15,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2018-07-25 13:31:15,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2018-07-25 13:31:15,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 306 transitions. [2018-07-25 13:31:15,097 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 306 transitions. Word has length 302 [2018-07-25 13:31:15,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:15,097 INFO L472 AbstractCegarLoop]: Abstraction has 305 states and 306 transitions. [2018-07-25 13:31:15,097 INFO L473 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-07-25 13:31:15,097 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 306 transitions. [2018-07-25 13:31:15,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-07-25 13:31:15,098 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:15,098 INFO L354 BasicCegarLoop]: trace histogram [76, 75, 75, 74, 1, 1, 1, 1] [2018-07-25 13:31:15,098 INFO L415 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:15,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1672429407, now seen corresponding path program 148 times [2018-07-25 13:31:15,098 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:15,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:15,475 INFO L134 CoverageAnalysis]: Checked inductivity of 11250 backedges. 5700 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:15,476 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:15,476 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-25 13:31:15,476 INFO L451 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-25 13:31:15,476 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-25 13:31:15,477 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3083, Invalid=3237, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 13:31:15,477 INFO L87 Difference]: Start difference. First operand 305 states and 306 transitions. Second operand 80 states. [2018-07-25 13:31:15,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:15,876 INFO L93 Difference]: Finished difference Result 313 states and 314 transitions. [2018-07-25 13:31:15,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2018-07-25 13:31:15,876 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 304 [2018-07-25 13:31:15,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:15,877 INFO L225 Difference]: With dead ends: 313 [2018-07-25 13:31:15,877 INFO L226 Difference]: Without dead ends: 311 [2018-07-25 13:31:15,879 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5776 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9088, Invalid=15092, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 13:31:15,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-07-25 13:31:15,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 307. [2018-07-25 13:31:15,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2018-07-25 13:31:15,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 308 transitions. [2018-07-25 13:31:15,998 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 308 transitions. Word has length 304 [2018-07-25 13:31:15,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:15,998 INFO L472 AbstractCegarLoop]: Abstraction has 307 states and 308 transitions. [2018-07-25 13:31:15,998 INFO L473 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-25 13:31:15,998 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 308 transitions. [2018-07-25 13:31:15,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-07-25 13:31:15,999 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:15,999 INFO L354 BasicCegarLoop]: trace histogram [76, 76, 75, 75, 1, 1, 1, 1] [2018-07-25 13:31:16,000 INFO L415 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:16,000 INFO L82 PathProgramCache]: Analyzing trace with hash 886824667, now seen corresponding path program 149 times [2018-07-25 13:31:16,000 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:16,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:16,733 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 5700 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:16,734 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:16,734 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [153] total 153 [2018-07-25 13:31:16,734 INFO L451 AbstractCegarLoop]: Interpolant automaton has 154 states [2018-07-25 13:31:16,735 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2018-07-25 13:31:16,736 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6005, Invalid=17557, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 13:31:16,736 INFO L87 Difference]: Start difference. First operand 307 states and 308 transitions. Second operand 154 states. [2018-07-25 13:31:17,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:17,556 INFO L93 Difference]: Finished difference Result 464 states and 466 transitions. [2018-07-25 13:31:17,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2018-07-25 13:31:17,556 INFO L78 Accepts]: Start accepts. Automaton has 154 states. Word has length 306 [2018-07-25 13:31:17,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:17,557 INFO L225 Difference]: With dead ends: 464 [2018-07-25 13:31:17,557 INFO L226 Difference]: Without dead ends: 309 [2018-07-25 13:31:17,562 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8475 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=12009, Invalid=40661, Unknown=0, NotChecked=0, Total=52670 [2018-07-25 13:31:17,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2018-07-25 13:31:17,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2018-07-25 13:31:17,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2018-07-25 13:31:17,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 310 transitions. [2018-07-25 13:31:17,721 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 310 transitions. Word has length 306 [2018-07-25 13:31:17,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:17,721 INFO L472 AbstractCegarLoop]: Abstraction has 309 states and 310 transitions. [2018-07-25 13:31:17,721 INFO L473 AbstractCegarLoop]: Interpolant automaton has 154 states. [2018-07-25 13:31:17,721 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 310 transitions. [2018-07-25 13:31:17,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-07-25 13:31:17,722 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:17,722 INFO L354 BasicCegarLoop]: trace histogram [77, 76, 76, 75, 1, 1, 1, 1] [2018-07-25 13:31:17,722 INFO L415 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:17,723 INFO L82 PathProgramCache]: Analyzing trace with hash -546070763, now seen corresponding path program 150 times [2018-07-25 13:31:17,723 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:17,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:18,080 INFO L134 CoverageAnalysis]: Checked inductivity of 11552 backedges. 5852 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:18,080 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:18,080 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-07-25 13:31:18,080 INFO L451 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-07-25 13:31:18,081 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-07-25 13:31:18,081 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3162, Invalid=3318, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 13:31:18,082 INFO L87 Difference]: Start difference. First operand 309 states and 310 transitions. Second operand 81 states. [2018-07-25 13:31:18,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:18,449 INFO L93 Difference]: Finished difference Result 317 states and 318 transitions. [2018-07-25 13:31:18,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2018-07-25 13:31:18,449 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 308 [2018-07-25 13:31:18,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:18,450 INFO L225 Difference]: With dead ends: 317 [2018-07-25 13:31:18,450 INFO L226 Difference]: Without dead ends: 315 [2018-07-25 13:31:18,451 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5929 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9323, Invalid=15483, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 13:31:18,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2018-07-25 13:31:18,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 311. [2018-07-25 13:31:18,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2018-07-25 13:31:18,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 312 transitions. [2018-07-25 13:31:18,559 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 312 transitions. Word has length 308 [2018-07-25 13:31:18,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:18,560 INFO L472 AbstractCegarLoop]: Abstraction has 311 states and 312 transitions. [2018-07-25 13:31:18,560 INFO L473 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-07-25 13:31:18,560 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 312 transitions. [2018-07-25 13:31:18,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-07-25 13:31:18,560 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:18,561 INFO L354 BasicCegarLoop]: trace histogram [77, 77, 76, 76, 1, 1, 1, 1] [2018-07-25 13:31:18,561 INFO L415 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:18,561 INFO L82 PathProgramCache]: Analyzing trace with hash -788059887, now seen corresponding path program 151 times [2018-07-25 13:31:18,561 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:18,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:19,217 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 5852 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:19,217 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:19,217 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [155] total 155 [2018-07-25 13:31:19,218 INFO L451 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-07-25 13:31:19,218 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-07-25 13:31:19,220 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6161, Invalid=18019, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 13:31:19,220 INFO L87 Difference]: Start difference. First operand 311 states and 312 transitions. Second operand 156 states. [2018-07-25 13:31:20,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:20,305 INFO L93 Difference]: Finished difference Result 470 states and 472 transitions. [2018-07-25 13:31:20,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2018-07-25 13:31:20,305 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 310 [2018-07-25 13:31:20,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:20,306 INFO L225 Difference]: With dead ends: 470 [2018-07-25 13:31:20,306 INFO L226 Difference]: Without dead ends: 313 [2018-07-25 13:31:20,308 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8702 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=12321, Invalid=41735, Unknown=0, NotChecked=0, Total=54056 [2018-07-25 13:31:20,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2018-07-25 13:31:20,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2018-07-25 13:31:20,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2018-07-25 13:31:20,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 314 transitions. [2018-07-25 13:31:20,416 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 314 transitions. Word has length 310 [2018-07-25 13:31:20,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:20,417 INFO L472 AbstractCegarLoop]: Abstraction has 313 states and 314 transitions. [2018-07-25 13:31:20,417 INFO L473 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-07-25 13:31:20,417 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 314 transitions. [2018-07-25 13:31:20,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-07-25 13:31:20,418 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:20,418 INFO L354 BasicCegarLoop]: trace histogram [78, 77, 77, 76, 1, 1, 1, 1] [2018-07-25 13:31:20,418 INFO L415 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:20,418 INFO L82 PathProgramCache]: Analyzing trace with hash -319800245, now seen corresponding path program 152 times [2018-07-25 13:31:20,418 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:20,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:20,784 INFO L134 CoverageAnalysis]: Checked inductivity of 11858 backedges. 6006 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:20,784 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:20,785 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-07-25 13:31:20,785 INFO L451 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-07-25 13:31:20,785 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-07-25 13:31:20,786 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3242, Invalid=3400, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 13:31:20,786 INFO L87 Difference]: Start difference. First operand 313 states and 314 transitions. Second operand 82 states. [2018-07-25 13:31:21,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:21,179 INFO L93 Difference]: Finished difference Result 321 states and 322 transitions. [2018-07-25 13:31:21,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2018-07-25 13:31:21,179 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 312 [2018-07-25 13:31:21,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:21,180 INFO L225 Difference]: With dead ends: 321 [2018-07-25 13:31:21,180 INFO L226 Difference]: Without dead ends: 319 [2018-07-25 13:31:21,182 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6084 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9561, Invalid=15879, Unknown=0, NotChecked=0, Total=25440 [2018-07-25 13:31:21,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-07-25 13:31:21,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 315. [2018-07-25 13:31:21,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2018-07-25 13:31:21,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 316 transitions. [2018-07-25 13:31:21,370 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 316 transitions. Word has length 312 [2018-07-25 13:31:21,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:21,370 INFO L472 AbstractCegarLoop]: Abstraction has 315 states and 316 transitions. [2018-07-25 13:31:21,370 INFO L473 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-07-25 13:31:21,370 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 316 transitions. [2018-07-25 13:31:21,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-07-25 13:31:21,371 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:21,372 INFO L354 BasicCegarLoop]: trace histogram [78, 78, 77, 77, 1, 1, 1, 1] [2018-07-25 13:31:21,372 INFO L415 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:21,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1909543111, now seen corresponding path program 153 times [2018-07-25 13:31:21,372 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:21,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:22,122 INFO L134 CoverageAnalysis]: Checked inductivity of 12012 backedges. 6006 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:22,122 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:22,123 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [157] total 157 [2018-07-25 13:31:22,123 INFO L451 AbstractCegarLoop]: Interpolant automaton has 158 states [2018-07-25 13:31:22,124 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2018-07-25 13:31:22,125 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6319, Invalid=18487, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 13:31:22,126 INFO L87 Difference]: Start difference. First operand 315 states and 316 transitions. Second operand 158 states. [2018-07-25 13:31:23,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:23,922 INFO L93 Difference]: Finished difference Result 476 states and 478 transitions. [2018-07-25 13:31:23,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2018-07-25 13:31:23,922 INFO L78 Accepts]: Start accepts. Automaton has 158 states. Word has length 314 [2018-07-25 13:31:23,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:23,922 INFO L225 Difference]: With dead ends: 476 [2018-07-25 13:31:23,922 INFO L226 Difference]: Without dead ends: 317 [2018-07-25 13:31:23,928 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8932 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=12637, Invalid=42823, Unknown=0, NotChecked=0, Total=55460 [2018-07-25 13:31:23,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2018-07-25 13:31:24,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2018-07-25 13:31:24,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2018-07-25 13:31:24,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 318 transitions. [2018-07-25 13:31:24,053 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 318 transitions. Word has length 314 [2018-07-25 13:31:24,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:24,053 INFO L472 AbstractCegarLoop]: Abstraction has 317 states and 318 transitions. [2018-07-25 13:31:24,053 INFO L473 AbstractCegarLoop]: Interpolant automaton has 158 states. [2018-07-25 13:31:24,054 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 318 transitions. [2018-07-25 13:31:24,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-07-25 13:31:24,055 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:24,055 INFO L354 BasicCegarLoop]: trace histogram [79, 78, 78, 77, 1, 1, 1, 1] [2018-07-25 13:31:24,055 INFO L415 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:24,055 INFO L82 PathProgramCache]: Analyzing trace with hash -2144717055, now seen corresponding path program 154 times [2018-07-25 13:31:24,055 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:24,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:24,499 INFO L134 CoverageAnalysis]: Checked inductivity of 12168 backedges. 6162 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:24,499 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:24,499 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2018-07-25 13:31:24,499 INFO L451 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-07-25 13:31:24,500 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-07-25 13:31:24,500 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3323, Invalid=3483, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 13:31:24,500 INFO L87 Difference]: Start difference. First operand 317 states and 318 transitions. Second operand 83 states. [2018-07-25 13:31:24,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:24,893 INFO L93 Difference]: Finished difference Result 325 states and 326 transitions. [2018-07-25 13:31:24,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2018-07-25 13:31:24,893 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 316 [2018-07-25 13:31:24,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:24,894 INFO L225 Difference]: With dead ends: 325 [2018-07-25 13:31:24,894 INFO L226 Difference]: Without dead ends: 323 [2018-07-25 13:31:24,896 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6241 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9802, Invalid=16280, Unknown=0, NotChecked=0, Total=26082 [2018-07-25 13:31:24,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2018-07-25 13:31:25,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 319. [2018-07-25 13:31:25,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-07-25 13:31:25,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 320 transitions. [2018-07-25 13:31:25,023 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 320 transitions. Word has length 316 [2018-07-25 13:31:25,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:25,024 INFO L472 AbstractCegarLoop]: Abstraction has 319 states and 320 transitions. [2018-07-25 13:31:25,024 INFO L473 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-07-25 13:31:25,024 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 320 transitions. [2018-07-25 13:31:25,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-07-25 13:31:25,025 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:25,025 INFO L354 BasicCegarLoop]: trace histogram [79, 79, 78, 78, 1, 1, 1, 1] [2018-07-25 13:31:25,025 INFO L415 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:25,025 INFO L82 PathProgramCache]: Analyzing trace with hash 511145469, now seen corresponding path program 155 times [2018-07-25 13:31:25,025 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:25,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:25,786 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 6162 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:25,787 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:25,787 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [159] total 159 [2018-07-25 13:31:25,787 INFO L451 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-07-25 13:31:25,788 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-07-25 13:31:25,789 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6479, Invalid=18961, Unknown=0, NotChecked=0, Total=25440 [2018-07-25 13:31:25,790 INFO L87 Difference]: Start difference. First operand 319 states and 320 transitions. Second operand 160 states. [2018-07-25 13:31:27,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:27,544 INFO L93 Difference]: Finished difference Result 482 states and 484 transitions. [2018-07-25 13:31:27,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2018-07-25 13:31:27,544 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 318 [2018-07-25 13:31:27,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:27,545 INFO L225 Difference]: With dead ends: 482 [2018-07-25 13:31:27,545 INFO L226 Difference]: Without dead ends: 321 [2018-07-25 13:31:27,550 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9165 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=12957, Invalid=43925, Unknown=0, NotChecked=0, Total=56882 [2018-07-25 13:31:27,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2018-07-25 13:31:27,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2018-07-25 13:31:27,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2018-07-25 13:31:27,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 322 transitions. [2018-07-25 13:31:27,678 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 322 transitions. Word has length 318 [2018-07-25 13:31:27,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:27,679 INFO L472 AbstractCegarLoop]: Abstraction has 321 states and 322 transitions. [2018-07-25 13:31:27,679 INFO L473 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-07-25 13:31:27,679 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 322 transitions. [2018-07-25 13:31:27,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2018-07-25 13:31:27,680 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:27,680 INFO L354 BasicCegarLoop]: trace histogram [80, 79, 79, 78, 1, 1, 1, 1] [2018-07-25 13:31:27,680 INFO L415 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:27,680 INFO L82 PathProgramCache]: Analyzing trace with hash -316756169, now seen corresponding path program 156 times [2018-07-25 13:31:27,680 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:27,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:28,104 INFO L134 CoverageAnalysis]: Checked inductivity of 12482 backedges. 6320 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:28,105 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:28,105 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-07-25 13:31:28,105 INFO L451 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-07-25 13:31:28,106 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-07-25 13:31:28,106 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3405, Invalid=3567, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 13:31:28,106 INFO L87 Difference]: Start difference. First operand 321 states and 322 transitions. Second operand 84 states. [2018-07-25 13:31:28,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:28,539 INFO L93 Difference]: Finished difference Result 329 states and 330 transitions. [2018-07-25 13:31:28,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2018-07-25 13:31:28,540 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 320 [2018-07-25 13:31:28,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:28,540 INFO L225 Difference]: With dead ends: 329 [2018-07-25 13:31:28,540 INFO L226 Difference]: Without dead ends: 327 [2018-07-25 13:31:28,543 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6400 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10046, Invalid=16686, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 13:31:28,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-07-25 13:31:28,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 323. [2018-07-25 13:31:28,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2018-07-25 13:31:28,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 324 transitions. [2018-07-25 13:31:28,675 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 324 transitions. Word has length 320 [2018-07-25 13:31:28,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:28,675 INFO L472 AbstractCegarLoop]: Abstraction has 323 states and 324 transitions. [2018-07-25 13:31:28,675 INFO L473 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-07-25 13:31:28,675 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 324 transitions. [2018-07-25 13:31:28,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-07-25 13:31:28,676 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:28,676 INFO L354 BasicCegarLoop]: trace histogram [80, 80, 79, 79, 1, 1, 1, 1] [2018-07-25 13:31:28,676 INFO L415 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:28,676 INFO L82 PathProgramCache]: Analyzing trace with hash 539932851, now seen corresponding path program 157 times [2018-07-25 13:31:28,676 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:28,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:29,480 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 6320 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:29,481 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:29,481 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [161] total 161 [2018-07-25 13:31:29,481 INFO L451 AbstractCegarLoop]: Interpolant automaton has 162 states [2018-07-25 13:31:29,482 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2018-07-25 13:31:29,484 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6641, Invalid=19441, Unknown=0, NotChecked=0, Total=26082 [2018-07-25 13:31:29,484 INFO L87 Difference]: Start difference. First operand 323 states and 324 transitions. Second operand 162 states. [2018-07-25 13:31:31,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:31,116 INFO L93 Difference]: Finished difference Result 488 states and 490 transitions. [2018-07-25 13:31:31,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2018-07-25 13:31:31,116 INFO L78 Accepts]: Start accepts. Automaton has 162 states. Word has length 322 [2018-07-25 13:31:31,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:31,117 INFO L225 Difference]: With dead ends: 488 [2018-07-25 13:31:31,117 INFO L226 Difference]: Without dead ends: 325 [2018-07-25 13:31:31,121 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9401 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=13281, Invalid=45041, Unknown=0, NotChecked=0, Total=58322 [2018-07-25 13:31:31,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2018-07-25 13:31:31,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2018-07-25 13:31:31,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2018-07-25 13:31:31,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 326 transitions. [2018-07-25 13:31:31,237 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 326 transitions. Word has length 322 [2018-07-25 13:31:31,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:31,237 INFO L472 AbstractCegarLoop]: Abstraction has 325 states and 326 transitions. [2018-07-25 13:31:31,237 INFO L473 AbstractCegarLoop]: Interpolant automaton has 162 states. [2018-07-25 13:31:31,237 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 326 transitions. [2018-07-25 13:31:31,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2018-07-25 13:31:31,238 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:31,238 INFO L354 BasicCegarLoop]: trace histogram [81, 80, 80, 79, 1, 1, 1, 1] [2018-07-25 13:31:31,238 INFO L415 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:31,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1774372077, now seen corresponding path program 158 times [2018-07-25 13:31:31,239 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:31,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:31,643 INFO L134 CoverageAnalysis]: Checked inductivity of 12800 backedges. 6480 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:31,643 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:31,643 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2018-07-25 13:31:31,644 INFO L451 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-07-25 13:31:31,644 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-07-25 13:31:31,644 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3488, Invalid=3652, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 13:31:31,645 INFO L87 Difference]: Start difference. First operand 325 states and 326 transitions. Second operand 85 states. [2018-07-25 13:31:32,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:32,086 INFO L93 Difference]: Finished difference Result 333 states and 334 transitions. [2018-07-25 13:31:32,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2018-07-25 13:31:32,086 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 324 [2018-07-25 13:31:32,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:32,087 INFO L225 Difference]: With dead ends: 333 [2018-07-25 13:31:32,087 INFO L226 Difference]: Without dead ends: 331 [2018-07-25 13:31:32,090 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6561 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10293, Invalid=17097, Unknown=0, NotChecked=0, Total=27390 [2018-07-25 13:31:32,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2018-07-25 13:31:32,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 327. [2018-07-25 13:31:32,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2018-07-25 13:31:32,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 328 transitions. [2018-07-25 13:31:32,225 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 328 transitions. Word has length 324 [2018-07-25 13:31:32,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:32,225 INFO L472 AbstractCegarLoop]: Abstraction has 327 states and 328 transitions. [2018-07-25 13:31:32,226 INFO L473 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-07-25 13:31:32,226 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 328 transitions. [2018-07-25 13:31:32,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-07-25 13:31:32,226 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:32,227 INFO L354 BasicCegarLoop]: trace histogram [81, 81, 80, 80, 1, 1, 1, 1] [2018-07-25 13:31:32,227 INFO L415 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:32,227 INFO L82 PathProgramCache]: Analyzing trace with hash 69482729, now seen corresponding path program 159 times [2018-07-25 13:31:32,227 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:32,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:33,036 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 6480 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:33,036 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:33,036 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [163] total 163 [2018-07-25 13:31:33,037 INFO L451 AbstractCegarLoop]: Interpolant automaton has 164 states [2018-07-25 13:31:33,037 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2018-07-25 13:31:33,038 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6805, Invalid=19927, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 13:31:33,039 INFO L87 Difference]: Start difference. First operand 327 states and 328 transitions. Second operand 164 states. [2018-07-25 13:31:34,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:34,081 INFO L93 Difference]: Finished difference Result 494 states and 496 transitions. [2018-07-25 13:31:34,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2018-07-25 13:31:34,081 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 326 [2018-07-25 13:31:34,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:34,082 INFO L225 Difference]: With dead ends: 494 [2018-07-25 13:31:34,082 INFO L226 Difference]: Without dead ends: 329 [2018-07-25 13:31:34,086 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9640 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=13609, Invalid=46171, Unknown=0, NotChecked=0, Total=59780 [2018-07-25 13:31:34,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2018-07-25 13:31:34,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2018-07-25 13:31:34,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2018-07-25 13:31:34,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 330 transitions. [2018-07-25 13:31:34,222 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 330 transitions. Word has length 326 [2018-07-25 13:31:34,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:34,222 INFO L472 AbstractCegarLoop]: Abstraction has 329 states and 330 transitions. [2018-07-25 13:31:34,222 INFO L473 AbstractCegarLoop]: Interpolant automaton has 164 states. [2018-07-25 13:31:34,222 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 330 transitions. [2018-07-25 13:31:34,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-07-25 13:31:34,223 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:34,223 INFO L354 BasicCegarLoop]: trace histogram [82, 81, 81, 80, 1, 1, 1, 1] [2018-07-25 13:31:34,224 INFO L415 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:34,224 INFO L82 PathProgramCache]: Analyzing trace with hash 268671011, now seen corresponding path program 160 times [2018-07-25 13:31:34,224 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:34,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:34,672 INFO L134 CoverageAnalysis]: Checked inductivity of 13122 backedges. 6642 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:34,673 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:34,673 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-07-25 13:31:34,673 INFO L451 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-07-25 13:31:34,674 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-07-25 13:31:34,674 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3572, Invalid=3738, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 13:31:34,674 INFO L87 Difference]: Start difference. First operand 329 states and 330 transitions. Second operand 86 states. [2018-07-25 13:31:35,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:35,104 INFO L93 Difference]: Finished difference Result 337 states and 338 transitions. [2018-07-25 13:31:35,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2018-07-25 13:31:35,104 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 328 [2018-07-25 13:31:35,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:35,104 INFO L225 Difference]: With dead ends: 337 [2018-07-25 13:31:35,105 INFO L226 Difference]: Without dead ends: 335 [2018-07-25 13:31:35,107 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6724 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10543, Invalid=17513, Unknown=0, NotChecked=0, Total=28056 [2018-07-25 13:31:35,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2018-07-25 13:31:35,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 331. [2018-07-25 13:31:35,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-07-25 13:31:35,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 332 transitions. [2018-07-25 13:31:35,330 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 332 transitions. Word has length 328 [2018-07-25 13:31:35,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:35,331 INFO L472 AbstractCegarLoop]: Abstraction has 331 states and 332 transitions. [2018-07-25 13:31:35,331 INFO L473 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-07-25 13:31:35,331 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 332 transitions. [2018-07-25 13:31:35,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-07-25 13:31:35,332 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:35,333 INFO L354 BasicCegarLoop]: trace histogram [82, 82, 81, 81, 1, 1, 1, 1] [2018-07-25 13:31:35,333 INFO L415 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:35,333 INFO L82 PathProgramCache]: Analyzing trace with hash 494737055, now seen corresponding path program 161 times [2018-07-25 13:31:35,333 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:35,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:36,233 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 6642 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:36,233 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:36,233 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [165] total 165 [2018-07-25 13:31:36,234 INFO L451 AbstractCegarLoop]: Interpolant automaton has 166 states [2018-07-25 13:31:36,235 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2018-07-25 13:31:36,237 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6971, Invalid=20419, Unknown=0, NotChecked=0, Total=27390 [2018-07-25 13:31:36,237 INFO L87 Difference]: Start difference. First operand 331 states and 332 transitions. Second operand 166 states. [2018-07-25 13:31:38,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:38,164 INFO L93 Difference]: Finished difference Result 500 states and 502 transitions. [2018-07-25 13:31:38,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2018-07-25 13:31:38,165 INFO L78 Accepts]: Start accepts. Automaton has 166 states. Word has length 330 [2018-07-25 13:31:38,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:38,165 INFO L225 Difference]: With dead ends: 500 [2018-07-25 13:31:38,165 INFO L226 Difference]: Without dead ends: 333 [2018-07-25 13:31:38,170 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 246 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9882 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=13941, Invalid=47315, Unknown=0, NotChecked=0, Total=61256 [2018-07-25 13:31:38,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2018-07-25 13:31:38,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2018-07-25 13:31:38,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2018-07-25 13:31:38,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 334 transitions. [2018-07-25 13:31:38,307 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 334 transitions. Word has length 330 [2018-07-25 13:31:38,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:38,307 INFO L472 AbstractCegarLoop]: Abstraction has 333 states and 334 transitions. [2018-07-25 13:31:38,307 INFO L473 AbstractCegarLoop]: Interpolant automaton has 166 states. [2018-07-25 13:31:38,307 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 334 transitions. [2018-07-25 13:31:38,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2018-07-25 13:31:38,308 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:38,308 INFO L354 BasicCegarLoop]: trace histogram [83, 82, 82, 81, 1, 1, 1, 1] [2018-07-25 13:31:38,309 INFO L415 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:38,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1606830297, now seen corresponding path program 162 times [2018-07-25 13:31:38,309 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:38,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:38,756 INFO L134 CoverageAnalysis]: Checked inductivity of 13448 backedges. 6806 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:38,757 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:38,757 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2018-07-25 13:31:38,757 INFO L451 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-07-25 13:31:38,758 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-07-25 13:31:38,758 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3657, Invalid=3825, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 13:31:38,758 INFO L87 Difference]: Start difference. First operand 333 states and 334 transitions. Second operand 87 states. [2018-07-25 13:31:39,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:39,219 INFO L93 Difference]: Finished difference Result 341 states and 342 transitions. [2018-07-25 13:31:39,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2018-07-25 13:31:39,219 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 332 [2018-07-25 13:31:39,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:39,220 INFO L225 Difference]: With dead ends: 341 [2018-07-25 13:31:39,220 INFO L226 Difference]: Without dead ends: 339 [2018-07-25 13:31:39,222 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6889 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10796, Invalid=17934, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 13:31:39,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2018-07-25 13:31:39,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 335. [2018-07-25 13:31:39,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2018-07-25 13:31:39,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 336 transitions. [2018-07-25 13:31:39,363 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 336 transitions. Word has length 332 [2018-07-25 13:31:39,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:39,363 INFO L472 AbstractCegarLoop]: Abstraction has 335 states and 336 transitions. [2018-07-25 13:31:39,363 INFO L473 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-07-25 13:31:39,363 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 336 transitions. [2018-07-25 13:31:39,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-07-25 13:31:39,364 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:39,364 INFO L354 BasicCegarLoop]: trace histogram [83, 83, 82, 82, 1, 1, 1, 1] [2018-07-25 13:31:39,364 INFO L415 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:39,364 INFO L82 PathProgramCache]: Analyzing trace with hash -2024377899, now seen corresponding path program 163 times [2018-07-25 13:31:39,365 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:39,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:40,222 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 6806 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:40,222 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:40,222 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [167] total 167 [2018-07-25 13:31:40,222 INFO L451 AbstractCegarLoop]: Interpolant automaton has 168 states [2018-07-25 13:31:40,223 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2018-07-25 13:31:40,225 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7139, Invalid=20917, Unknown=0, NotChecked=0, Total=28056 [2018-07-25 13:31:40,225 INFO L87 Difference]: Start difference. First operand 335 states and 336 transitions. Second operand 168 states. [2018-07-25 13:31:42,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:42,021 INFO L93 Difference]: Finished difference Result 506 states and 508 transitions. [2018-07-25 13:31:42,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2018-07-25 13:31:42,021 INFO L78 Accepts]: Start accepts. Automaton has 168 states. Word has length 334 [2018-07-25 13:31:42,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:42,022 INFO L225 Difference]: With dead ends: 506 [2018-07-25 13:31:42,022 INFO L226 Difference]: Without dead ends: 337 [2018-07-25 13:31:42,025 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10127 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=14277, Invalid=48473, Unknown=0, NotChecked=0, Total=62750 [2018-07-25 13:31:42,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2018-07-25 13:31:42,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2018-07-25 13:31:42,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2018-07-25 13:31:42,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 338 transitions. [2018-07-25 13:31:42,166 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 338 transitions. Word has length 334 [2018-07-25 13:31:42,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:42,166 INFO L472 AbstractCegarLoop]: Abstraction has 337 states and 338 transitions. [2018-07-25 13:31:42,166 INFO L473 AbstractCegarLoop]: Interpolant automaton has 168 states. [2018-07-25 13:31:42,166 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 338 transitions. [2018-07-25 13:31:42,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2018-07-25 13:31:42,167 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:42,167 INFO L354 BasicCegarLoop]: trace histogram [84, 83, 83, 82, 1, 1, 1, 1] [2018-07-25 13:31:42,167 INFO L415 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:42,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1088943887, now seen corresponding path program 164 times [2018-07-25 13:31:42,167 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:42,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:42,629 INFO L134 CoverageAnalysis]: Checked inductivity of 13778 backedges. 6972 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:42,629 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:42,629 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-07-25 13:31:42,630 INFO L451 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-07-25 13:31:42,630 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-07-25 13:31:42,630 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3743, Invalid=3913, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 13:31:42,631 INFO L87 Difference]: Start difference. First operand 337 states and 338 transitions. Second operand 88 states. [2018-07-25 13:31:43,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:43,100 INFO L93 Difference]: Finished difference Result 345 states and 346 transitions. [2018-07-25 13:31:43,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2018-07-25 13:31:43,101 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 336 [2018-07-25 13:31:43,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:43,101 INFO L225 Difference]: With dead ends: 345 [2018-07-25 13:31:43,101 INFO L226 Difference]: Without dead ends: 343 [2018-07-25 13:31:43,104 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7056 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11052, Invalid=18360, Unknown=0, NotChecked=0, Total=29412 [2018-07-25 13:31:43,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2018-07-25 13:31:43,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 339. [2018-07-25 13:31:43,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2018-07-25 13:31:43,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 340 transitions. [2018-07-25 13:31:43,249 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 340 transitions. Word has length 336 [2018-07-25 13:31:43,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:43,249 INFO L472 AbstractCegarLoop]: Abstraction has 339 states and 340 transitions. [2018-07-25 13:31:43,249 INFO L473 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-07-25 13:31:43,249 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 340 transitions. [2018-07-25 13:31:43,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-07-25 13:31:43,250 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:43,250 INFO L354 BasicCegarLoop]: trace histogram [84, 84, 83, 83, 1, 1, 1, 1] [2018-07-25 13:31:43,250 INFO L415 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:43,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1497011573, now seen corresponding path program 165 times [2018-07-25 13:31:43,251 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:43,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:44,141 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 6972 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:44,142 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:44,142 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [169] total 169 [2018-07-25 13:31:44,142 INFO L451 AbstractCegarLoop]: Interpolant automaton has 170 states [2018-07-25 13:31:44,144 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants. [2018-07-25 13:31:44,146 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7309, Invalid=21421, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 13:31:44,146 INFO L87 Difference]: Start difference. First operand 339 states and 340 transitions. Second operand 170 states. [2018-07-25 13:31:45,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:45,982 INFO L93 Difference]: Finished difference Result 512 states and 514 transitions. [2018-07-25 13:31:45,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2018-07-25 13:31:45,982 INFO L78 Accepts]: Start accepts. Automaton has 170 states. Word has length 338 [2018-07-25 13:31:45,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:45,982 INFO L225 Difference]: With dead ends: 512 [2018-07-25 13:31:45,983 INFO L226 Difference]: Without dead ends: 341 [2018-07-25 13:31:45,989 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10375 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=14617, Invalid=49645, Unknown=0, NotChecked=0, Total=64262 [2018-07-25 13:31:45,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2018-07-25 13:31:46,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2018-07-25 13:31:46,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2018-07-25 13:31:46,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 342 transitions. [2018-07-25 13:31:46,191 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 342 transitions. Word has length 338 [2018-07-25 13:31:46,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:46,191 INFO L472 AbstractCegarLoop]: Abstraction has 341 states and 342 transitions. [2018-07-25 13:31:46,191 INFO L473 AbstractCegarLoop]: Interpolant automaton has 170 states. [2018-07-25 13:31:46,191 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 342 transitions. [2018-07-25 13:31:46,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2018-07-25 13:31:46,192 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:46,193 INFO L354 BasicCegarLoop]: trace histogram [85, 84, 84, 83, 1, 1, 1, 1] [2018-07-25 13:31:46,193 INFO L415 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:46,193 INFO L82 PathProgramCache]: Analyzing trace with hash -2059550011, now seen corresponding path program 166 times [2018-07-25 13:31:46,193 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:46,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:46,666 INFO L134 CoverageAnalysis]: Checked inductivity of 14112 backedges. 7140 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:46,667 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:46,667 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-07-25 13:31:46,667 INFO L451 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-07-25 13:31:46,667 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-07-25 13:31:46,668 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3830, Invalid=4002, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 13:31:46,668 INFO L87 Difference]: Start difference. First operand 341 states and 342 transitions. Second operand 89 states. [2018-07-25 13:31:47,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:47,107 INFO L93 Difference]: Finished difference Result 349 states and 350 transitions. [2018-07-25 13:31:47,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2018-07-25 13:31:47,107 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 340 [2018-07-25 13:31:47,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:47,108 INFO L225 Difference]: With dead ends: 349 [2018-07-25 13:31:47,108 INFO L226 Difference]: Without dead ends: 347 [2018-07-25 13:31:47,110 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7225 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11311, Invalid=18791, Unknown=0, NotChecked=0, Total=30102 [2018-07-25 13:31:47,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2018-07-25 13:31:47,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 343. [2018-07-25 13:31:47,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2018-07-25 13:31:47,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 344 transitions. [2018-07-25 13:31:47,258 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 344 transitions. Word has length 340 [2018-07-25 13:31:47,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:47,258 INFO L472 AbstractCegarLoop]: Abstraction has 343 states and 344 transitions. [2018-07-25 13:31:47,258 INFO L473 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-07-25 13:31:47,258 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 344 transitions. [2018-07-25 13:31:47,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-07-25 13:31:47,259 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:47,259 INFO L354 BasicCegarLoop]: trace histogram [85, 85, 84, 84, 1, 1, 1, 1] [2018-07-25 13:31:47,260 INFO L415 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:47,260 INFO L82 PathProgramCache]: Analyzing trace with hash 752296129, now seen corresponding path program 167 times [2018-07-25 13:31:47,260 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:47,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:48,175 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 7140 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:48,176 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:48,176 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [171] total 171 [2018-07-25 13:31:48,176 INFO L451 AbstractCegarLoop]: Interpolant automaton has 172 states [2018-07-25 13:31:48,177 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2018-07-25 13:31:48,179 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7481, Invalid=21931, Unknown=0, NotChecked=0, Total=29412 [2018-07-25 13:31:48,179 INFO L87 Difference]: Start difference. First operand 343 states and 344 transitions. Second operand 172 states. [2018-07-25 13:31:50,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:50,348 INFO L93 Difference]: Finished difference Result 518 states and 520 transitions. [2018-07-25 13:31:50,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2018-07-25 13:31:50,348 INFO L78 Accepts]: Start accepts. Automaton has 172 states. Word has length 342 [2018-07-25 13:31:50,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:50,349 INFO L225 Difference]: With dead ends: 518 [2018-07-25 13:31:50,349 INFO L226 Difference]: Without dead ends: 345 [2018-07-25 13:31:50,355 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10626 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=14961, Invalid=50831, Unknown=0, NotChecked=0, Total=65792 [2018-07-25 13:31:50,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2018-07-25 13:31:50,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2018-07-25 13:31:50,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2018-07-25 13:31:50,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 346 transitions. [2018-07-25 13:31:50,506 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 346 transitions. Word has length 342 [2018-07-25 13:31:50,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:50,506 INFO L472 AbstractCegarLoop]: Abstraction has 345 states and 346 transitions. [2018-07-25 13:31:50,506 INFO L473 AbstractCegarLoop]: Interpolant automaton has 172 states. [2018-07-25 13:31:50,506 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 346 transitions. [2018-07-25 13:31:50,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2018-07-25 13:31:50,507 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:50,507 INFO L354 BasicCegarLoop]: trace histogram [86, 85, 85, 84, 1, 1, 1, 1] [2018-07-25 13:31:50,507 INFO L415 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:50,508 INFO L82 PathProgramCache]: Analyzing trace with hash -359347205, now seen corresponding path program 168 times [2018-07-25 13:31:50,508 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:50,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:51,048 INFO L134 CoverageAnalysis]: Checked inductivity of 14450 backedges. 7310 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:51,048 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:51,048 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-07-25 13:31:51,048 INFO L451 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-07-25 13:31:51,049 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-07-25 13:31:51,049 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3918, Invalid=4092, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 13:31:51,049 INFO L87 Difference]: Start difference. First operand 345 states and 346 transitions. Second operand 90 states. [2018-07-25 13:31:51,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:51,532 INFO L93 Difference]: Finished difference Result 353 states and 354 transitions. [2018-07-25 13:31:51,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2018-07-25 13:31:51,532 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 344 [2018-07-25 13:31:51,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:51,533 INFO L225 Difference]: With dead ends: 353 [2018-07-25 13:31:51,533 INFO L226 Difference]: Without dead ends: 351 [2018-07-25 13:31:51,536 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7396 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11573, Invalid=19227, Unknown=0, NotChecked=0, Total=30800 [2018-07-25 13:31:51,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2018-07-25 13:31:51,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 347. [2018-07-25 13:31:51,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2018-07-25 13:31:51,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 348 transitions. [2018-07-25 13:31:51,740 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 348 transitions. Word has length 344 [2018-07-25 13:31:51,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:51,741 INFO L472 AbstractCegarLoop]: Abstraction has 347 states and 348 transitions. [2018-07-25 13:31:51,741 INFO L473 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-07-25 13:31:51,741 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 348 transitions. [2018-07-25 13:31:51,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-07-25 13:31:51,742 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:51,742 INFO L354 BasicCegarLoop]: trace histogram [86, 86, 85, 85, 1, 1, 1, 1] [2018-07-25 13:31:51,742 INFO L415 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:51,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1735347081, now seen corresponding path program 169 times [2018-07-25 13:31:51,742 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:51,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:52,664 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 7310 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:52,664 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:52,665 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [173] total 173 [2018-07-25 13:31:52,665 INFO L451 AbstractCegarLoop]: Interpolant automaton has 174 states [2018-07-25 13:31:52,667 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 174 interpolants. [2018-07-25 13:31:52,669 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7655, Invalid=22447, Unknown=0, NotChecked=0, Total=30102 [2018-07-25 13:31:52,669 INFO L87 Difference]: Start difference. First operand 347 states and 348 transitions. Second operand 174 states. [2018-07-25 13:31:54,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:54,637 INFO L93 Difference]: Finished difference Result 524 states and 526 transitions. [2018-07-25 13:31:54,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2018-07-25 13:31:54,637 INFO L78 Accepts]: Start accepts. Automaton has 174 states. Word has length 346 [2018-07-25 13:31:54,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:54,638 INFO L225 Difference]: With dead ends: 524 [2018-07-25 13:31:54,638 INFO L226 Difference]: Without dead ends: 349 [2018-07-25 13:31:54,644 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 258 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10880 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=15309, Invalid=52031, Unknown=0, NotChecked=0, Total=67340 [2018-07-25 13:31:54,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2018-07-25 13:31:54,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 349. [2018-07-25 13:31:54,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2018-07-25 13:31:54,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 350 transitions. [2018-07-25 13:31:54,796 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 350 transitions. Word has length 346 [2018-07-25 13:31:54,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:54,796 INFO L472 AbstractCegarLoop]: Abstraction has 349 states and 350 transitions. [2018-07-25 13:31:54,796 INFO L473 AbstractCegarLoop]: Interpolant automaton has 174 states. [2018-07-25 13:31:54,796 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 350 transitions. [2018-07-25 13:31:54,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2018-07-25 13:31:54,797 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:54,797 INFO L354 BasicCegarLoop]: trace histogram [87, 86, 86, 85, 1, 1, 1, 1] [2018-07-25 13:31:54,798 INFO L415 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:54,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1666043215, now seen corresponding path program 170 times [2018-07-25 13:31:54,798 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:55,331 INFO L134 CoverageAnalysis]: Checked inductivity of 14792 backedges. 7482 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:55,331 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:55,331 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2018-07-25 13:31:55,331 INFO L451 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-07-25 13:31:55,332 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-07-25 13:31:55,332 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4007, Invalid=4183, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 13:31:55,332 INFO L87 Difference]: Start difference. First operand 349 states and 350 transitions. Second operand 91 states. [2018-07-25 13:31:55,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:55,799 INFO L93 Difference]: Finished difference Result 357 states and 358 transitions. [2018-07-25 13:31:55,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2018-07-25 13:31:55,799 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 348 [2018-07-25 13:31:55,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:55,800 INFO L225 Difference]: With dead ends: 357 [2018-07-25 13:31:55,801 INFO L226 Difference]: Without dead ends: 355 [2018-07-25 13:31:55,804 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7569 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11838, Invalid=19668, Unknown=0, NotChecked=0, Total=31506 [2018-07-25 13:31:55,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2018-07-25 13:31:55,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 351. [2018-07-25 13:31:55,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2018-07-25 13:31:55,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 352 transitions. [2018-07-25 13:31:55,953 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 352 transitions. Word has length 348 [2018-07-25 13:31:55,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:55,953 INFO L472 AbstractCegarLoop]: Abstraction has 351 states and 352 transitions. [2018-07-25 13:31:55,953 INFO L473 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-07-25 13:31:55,953 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 352 transitions. [2018-07-25 13:31:55,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-07-25 13:31:55,954 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:55,954 INFO L354 BasicCegarLoop]: trace histogram [87, 87, 86, 86, 1, 1, 1, 1] [2018-07-25 13:31:55,954 INFO L415 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:55,955 INFO L82 PathProgramCache]: Analyzing trace with hash 955205037, now seen corresponding path program 171 times [2018-07-25 13:31:55,955 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:56,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:56,875 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 7482 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:31:56,875 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:56,875 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [175] total 175 [2018-07-25 13:31:56,876 INFO L451 AbstractCegarLoop]: Interpolant automaton has 176 states [2018-07-25 13:31:56,877 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2018-07-25 13:31:56,879 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7831, Invalid=22969, Unknown=0, NotChecked=0, Total=30800 [2018-07-25 13:31:56,879 INFO L87 Difference]: Start difference. First operand 351 states and 352 transitions. Second operand 176 states. [2018-07-25 13:31:59,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:59,356 INFO L93 Difference]: Finished difference Result 530 states and 532 transitions. [2018-07-25 13:31:59,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2018-07-25 13:31:59,356 INFO L78 Accepts]: Start accepts. Automaton has 176 states. Word has length 350 [2018-07-25 13:31:59,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:59,357 INFO L225 Difference]: With dead ends: 530 [2018-07-25 13:31:59,357 INFO L226 Difference]: Without dead ends: 353 [2018-07-25 13:31:59,363 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 261 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11137 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=15661, Invalid=53245, Unknown=0, NotChecked=0, Total=68906 [2018-07-25 13:31:59,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2018-07-25 13:31:59,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 353. [2018-07-25 13:31:59,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2018-07-25 13:31:59,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 354 transitions. [2018-07-25 13:31:59,517 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 354 transitions. Word has length 350 [2018-07-25 13:31:59,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:59,518 INFO L472 AbstractCegarLoop]: Abstraction has 353 states and 354 transitions. [2018-07-25 13:31:59,518 INFO L473 AbstractCegarLoop]: Interpolant automaton has 176 states. [2018-07-25 13:31:59,518 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 354 transitions. [2018-07-25 13:31:59,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2018-07-25 13:31:59,519 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:59,519 INFO L354 BasicCegarLoop]: trace histogram [88, 87, 87, 86, 1, 1, 1, 1] [2018-07-25 13:31:59,519 INFO L415 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:59,519 INFO L82 PathProgramCache]: Analyzing trace with hash 928192231, now seen corresponding path program 172 times [2018-07-25 13:31:59,519 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:59,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:00,105 INFO L134 CoverageAnalysis]: Checked inductivity of 15138 backedges. 7656 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:00,105 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:00,105 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-07-25 13:32:00,105 INFO L451 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-07-25 13:32:00,106 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-07-25 13:32:00,106 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4097, Invalid=4275, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 13:32:00,106 INFO L87 Difference]: Start difference. First operand 353 states and 354 transitions. Second operand 92 states. [2018-07-25 13:32:00,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:00,750 INFO L93 Difference]: Finished difference Result 361 states and 362 transitions. [2018-07-25 13:32:00,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2018-07-25 13:32:00,750 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 352 [2018-07-25 13:32:00,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:00,751 INFO L225 Difference]: With dead ends: 361 [2018-07-25 13:32:00,751 INFO L226 Difference]: Without dead ends: 359 [2018-07-25 13:32:00,753 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7744 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12106, Invalid=20114, Unknown=0, NotChecked=0, Total=32220 [2018-07-25 13:32:00,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2018-07-25 13:32:00,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 355. [2018-07-25 13:32:00,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2018-07-25 13:32:00,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 356 transitions. [2018-07-25 13:32:00,909 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 356 transitions. Word has length 352 [2018-07-25 13:32:00,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:00,909 INFO L472 AbstractCegarLoop]: Abstraction has 355 states and 356 transitions. [2018-07-25 13:32:00,910 INFO L473 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-07-25 13:32:00,910 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 356 transitions. [2018-07-25 13:32:00,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-07-25 13:32:00,911 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:00,911 INFO L354 BasicCegarLoop]: trace histogram [88, 88, 87, 87, 1, 1, 1, 1] [2018-07-25 13:32:00,911 INFO L415 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:00,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1360530333, now seen corresponding path program 173 times [2018-07-25 13:32:00,911 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:01,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:01,866 INFO L134 CoverageAnalysis]: Checked inductivity of 15312 backedges. 7656 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:01,867 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:01,867 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [177] total 177 [2018-07-25 13:32:01,867 INFO L451 AbstractCegarLoop]: Interpolant automaton has 178 states [2018-07-25 13:32:01,868 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 178 interpolants. [2018-07-25 13:32:01,871 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8009, Invalid=23497, Unknown=0, NotChecked=0, Total=31506 [2018-07-25 13:32:01,872 INFO L87 Difference]: Start difference. First operand 355 states and 356 transitions. Second operand 178 states. [2018-07-25 13:32:04,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:04,464 INFO L93 Difference]: Finished difference Result 536 states and 538 transitions. [2018-07-25 13:32:04,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2018-07-25 13:32:04,465 INFO L78 Accepts]: Start accepts. Automaton has 178 states. Word has length 354 [2018-07-25 13:32:04,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:04,465 INFO L225 Difference]: With dead ends: 536 [2018-07-25 13:32:04,466 INFO L226 Difference]: Without dead ends: 357 [2018-07-25 13:32:04,473 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 264 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11397 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=16017, Invalid=54473, Unknown=0, NotChecked=0, Total=70490 [2018-07-25 13:32:04,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2018-07-25 13:32:04,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2018-07-25 13:32:04,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2018-07-25 13:32:04,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 358 transitions. [2018-07-25 13:32:04,643 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 358 transitions. Word has length 354 [2018-07-25 13:32:04,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:04,643 INFO L472 AbstractCegarLoop]: Abstraction has 357 states and 358 transitions. [2018-07-25 13:32:04,643 INFO L473 AbstractCegarLoop]: Interpolant automaton has 178 states. [2018-07-25 13:32:04,643 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 358 transitions. [2018-07-25 13:32:04,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2018-07-25 13:32:04,644 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:04,644 INFO L354 BasicCegarLoop]: trace histogram [89, 88, 88, 87, 1, 1, 1, 1] [2018-07-25 13:32:04,644 INFO L415 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:04,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1210882205, now seen corresponding path program 174 times [2018-07-25 13:32:04,645 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:04,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:05,244 INFO L134 CoverageAnalysis]: Checked inductivity of 15488 backedges. 7832 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:05,245 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:05,245 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2018-07-25 13:32:05,245 INFO L451 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-07-25 13:32:05,246 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-07-25 13:32:05,246 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4188, Invalid=4368, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 13:32:05,246 INFO L87 Difference]: Start difference. First operand 357 states and 358 transitions. Second operand 93 states. [2018-07-25 13:32:05,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:05,758 INFO L93 Difference]: Finished difference Result 365 states and 366 transitions. [2018-07-25 13:32:05,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2018-07-25 13:32:05,758 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 356 [2018-07-25 13:32:05,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:05,758 INFO L225 Difference]: With dead ends: 365 [2018-07-25 13:32:05,759 INFO L226 Difference]: Without dead ends: 363 [2018-07-25 13:32:05,761 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7921 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12377, Invalid=20565, Unknown=0, NotChecked=0, Total=32942 [2018-07-25 13:32:05,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2018-07-25 13:32:05,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 359. [2018-07-25 13:32:05,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2018-07-25 13:32:05,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 360 transitions. [2018-07-25 13:32:05,921 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 360 transitions. Word has length 356 [2018-07-25 13:32:05,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:05,921 INFO L472 AbstractCegarLoop]: Abstraction has 359 states and 360 transitions. [2018-07-25 13:32:05,921 INFO L473 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-07-25 13:32:05,921 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 360 transitions. [2018-07-25 13:32:05,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-07-25 13:32:05,922 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:05,923 INFO L354 BasicCegarLoop]: trace histogram [89, 89, 88, 88, 1, 1, 1, 1] [2018-07-25 13:32:05,923 INFO L415 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:05,923 INFO L82 PathProgramCache]: Analyzing trace with hash -278404967, now seen corresponding path program 175 times [2018-07-25 13:32:05,923 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:06,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:06,921 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 7832 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:06,921 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:06,921 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [179] total 179 [2018-07-25 13:32:06,922 INFO L451 AbstractCegarLoop]: Interpolant automaton has 180 states [2018-07-25 13:32:06,923 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2018-07-25 13:32:06,925 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8189, Invalid=24031, Unknown=0, NotChecked=0, Total=32220 [2018-07-25 13:32:06,925 INFO L87 Difference]: Start difference. First operand 359 states and 360 transitions. Second operand 180 states. [2018-07-25 13:32:09,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:09,579 INFO L93 Difference]: Finished difference Result 542 states and 544 transitions. [2018-07-25 13:32:09,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2018-07-25 13:32:09,579 INFO L78 Accepts]: Start accepts. Automaton has 180 states. Word has length 358 [2018-07-25 13:32:09,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:09,580 INFO L225 Difference]: With dead ends: 542 [2018-07-25 13:32:09,580 INFO L226 Difference]: Without dead ends: 361 [2018-07-25 13:32:09,587 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 267 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11660 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=16377, Invalid=55715, Unknown=0, NotChecked=0, Total=72092 [2018-07-25 13:32:09,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2018-07-25 13:32:09,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2018-07-25 13:32:09,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2018-07-25 13:32:09,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 362 transitions. [2018-07-25 13:32:09,747 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 362 transitions. Word has length 358 [2018-07-25 13:32:09,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:09,747 INFO L472 AbstractCegarLoop]: Abstraction has 361 states and 362 transitions. [2018-07-25 13:32:09,747 INFO L473 AbstractCegarLoop]: Interpolant automaton has 180 states. [2018-07-25 13:32:09,747 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 362 transitions. [2018-07-25 13:32:09,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-07-25 13:32:09,748 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:09,748 INFO L354 BasicCegarLoop]: trace histogram [90, 89, 89, 88, 1, 1, 1, 1] [2018-07-25 13:32:09,749 INFO L415 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:09,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1357633491, now seen corresponding path program 176 times [2018-07-25 13:32:09,749 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:09,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:10,321 INFO L134 CoverageAnalysis]: Checked inductivity of 15842 backedges. 8010 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:10,321 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:10,321 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-07-25 13:32:10,322 INFO L451 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-07-25 13:32:10,322 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-07-25 13:32:10,323 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4280, Invalid=4462, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 13:32:10,323 INFO L87 Difference]: Start difference. First operand 361 states and 362 transitions. Second operand 94 states. [2018-07-25 13:32:10,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:10,843 INFO L93 Difference]: Finished difference Result 369 states and 370 transitions. [2018-07-25 13:32:10,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2018-07-25 13:32:10,844 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 360 [2018-07-25 13:32:10,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:10,844 INFO L225 Difference]: With dead ends: 369 [2018-07-25 13:32:10,845 INFO L226 Difference]: Without dead ends: 367 [2018-07-25 13:32:10,848 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8100 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12651, Invalid=21021, Unknown=0, NotChecked=0, Total=33672 [2018-07-25 13:32:10,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2018-07-25 13:32:11,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 363. [2018-07-25 13:32:11,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2018-07-25 13:32:11,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 364 transitions. [2018-07-25 13:32:11,013 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 364 transitions. Word has length 360 [2018-07-25 13:32:11,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:11,013 INFO L472 AbstractCegarLoop]: Abstraction has 363 states and 364 transitions. [2018-07-25 13:32:11,013 INFO L473 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-07-25 13:32:11,013 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 364 transitions. [2018-07-25 13:32:11,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-07-25 13:32:11,014 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:11,014 INFO L354 BasicCegarLoop]: trace histogram [90, 90, 89, 89, 1, 1, 1, 1] [2018-07-25 13:32:11,015 INFO L415 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:11,015 INFO L82 PathProgramCache]: Analyzing trace with hash -984339889, now seen corresponding path program 177 times [2018-07-25 13:32:11,015 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:11,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:12,036 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 8010 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:12,037 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:12,037 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [181] total 181 [2018-07-25 13:32:12,037 INFO L451 AbstractCegarLoop]: Interpolant automaton has 182 states [2018-07-25 13:32:12,038 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 182 interpolants. [2018-07-25 13:32:12,041 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8371, Invalid=24571, Unknown=0, NotChecked=0, Total=32942 [2018-07-25 13:32:12,041 INFO L87 Difference]: Start difference. First operand 363 states and 364 transitions. Second operand 182 states. [2018-07-25 13:32:14,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:14,038 INFO L93 Difference]: Finished difference Result 548 states and 550 transitions. [2018-07-25 13:32:14,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2018-07-25 13:32:14,038 INFO L78 Accepts]: Start accepts. Automaton has 182 states. Word has length 362 [2018-07-25 13:32:14,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:14,039 INFO L225 Difference]: With dead ends: 548 [2018-07-25 13:32:14,039 INFO L226 Difference]: Without dead ends: 365 [2018-07-25 13:32:14,046 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 270 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11926 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=16741, Invalid=56971, Unknown=0, NotChecked=0, Total=73712 [2018-07-25 13:32:14,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2018-07-25 13:32:14,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2018-07-25 13:32:14,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2018-07-25 13:32:14,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 366 transitions. [2018-07-25 13:32:14,272 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 366 transitions. Word has length 362 [2018-07-25 13:32:14,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:14,273 INFO L472 AbstractCegarLoop]: Abstraction has 365 states and 366 transitions. [2018-07-25 13:32:14,273 INFO L473 AbstractCegarLoop]: Interpolant automaton has 182 states. [2018-07-25 13:32:14,273 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 366 transitions. [2018-07-25 13:32:14,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2018-07-25 13:32:14,274 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:14,274 INFO L354 BasicCegarLoop]: trace histogram [91, 90, 90, 89, 1, 1, 1, 1] [2018-07-25 13:32:14,274 INFO L415 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:14,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1228272777, now seen corresponding path program 178 times [2018-07-25 13:32:14,274 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:14,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:14,868 INFO L134 CoverageAnalysis]: Checked inductivity of 16200 backedges. 8190 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:14,868 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:14,868 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2018-07-25 13:32:14,869 INFO L451 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-07-25 13:32:14,869 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-07-25 13:32:14,870 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4373, Invalid=4557, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 13:32:14,870 INFO L87 Difference]: Start difference. First operand 365 states and 366 transitions. Second operand 95 states. [2018-07-25 13:32:15,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:15,430 INFO L93 Difference]: Finished difference Result 373 states and 374 transitions. [2018-07-25 13:32:15,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2018-07-25 13:32:15,430 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 364 [2018-07-25 13:32:15,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:15,430 INFO L225 Difference]: With dead ends: 373 [2018-07-25 13:32:15,431 INFO L226 Difference]: Without dead ends: 371 [2018-07-25 13:32:15,433 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8281 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12928, Invalid=21482, Unknown=0, NotChecked=0, Total=34410 [2018-07-25 13:32:15,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2018-07-25 13:32:15,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 367. [2018-07-25 13:32:15,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2018-07-25 13:32:15,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 368 transitions. [2018-07-25 13:32:15,601 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 368 transitions. Word has length 364 [2018-07-25 13:32:15,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:15,601 INFO L472 AbstractCegarLoop]: Abstraction has 367 states and 368 transitions. [2018-07-25 13:32:15,601 INFO L473 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-07-25 13:32:15,601 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 368 transitions. [2018-07-25 13:32:15,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-07-25 13:32:15,602 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:15,602 INFO L354 BasicCegarLoop]: trace histogram [91, 91, 90, 90, 1, 1, 1, 1] [2018-07-25 13:32:15,603 INFO L415 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:15,603 INFO L82 PathProgramCache]: Analyzing trace with hash -745934459, now seen corresponding path program 179 times [2018-07-25 13:32:15,603 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:15,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:16,635 INFO L134 CoverageAnalysis]: Checked inductivity of 16380 backedges. 8190 proven. 8190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:16,636 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:16,636 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [183] total 183 [2018-07-25 13:32:16,636 INFO L451 AbstractCegarLoop]: Interpolant automaton has 184 states [2018-07-25 13:32:16,637 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2018-07-25 13:32:16,640 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8555, Invalid=25117, Unknown=0, NotChecked=0, Total=33672 [2018-07-25 13:32:16,640 INFO L87 Difference]: Start difference. First operand 367 states and 368 transitions. Second operand 184 states. [2018-07-25 13:32:19,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:19,188 INFO L93 Difference]: Finished difference Result 554 states and 556 transitions. [2018-07-25 13:32:19,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2018-07-25 13:32:19,188 INFO L78 Accepts]: Start accepts. Automaton has 184 states. Word has length 366 [2018-07-25 13:32:19,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:19,189 INFO L225 Difference]: With dead ends: 554 [2018-07-25 13:32:19,189 INFO L226 Difference]: Without dead ends: 369 [2018-07-25 13:32:19,192 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 273 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12195 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=17109, Invalid=58241, Unknown=0, NotChecked=0, Total=75350 [2018-07-25 13:32:19,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2018-07-25 13:32:19,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2018-07-25 13:32:19,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2018-07-25 13:32:19,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 370 transitions. [2018-07-25 13:32:19,358 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 370 transitions. Word has length 366 [2018-07-25 13:32:19,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:19,359 INFO L472 AbstractCegarLoop]: Abstraction has 369 states and 370 transitions. [2018-07-25 13:32:19,359 INFO L473 AbstractCegarLoop]: Interpolant automaton has 184 states. [2018-07-25 13:32:19,359 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 370 transitions. [2018-07-25 13:32:19,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-07-25 13:32:19,360 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:19,360 INFO L354 BasicCegarLoop]: trace histogram [92, 91, 91, 90, 1, 1, 1, 1] [2018-07-25 13:32:19,360 INFO L415 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:19,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1599598913, now seen corresponding path program 180 times [2018-07-25 13:32:19,360 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:19,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:19,925 INFO L134 CoverageAnalysis]: Checked inductivity of 16562 backedges. 8372 proven. 8190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:19,926 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:19,926 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-07-25 13:32:19,926 INFO L451 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-07-25 13:32:19,926 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-07-25 13:32:19,927 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4467, Invalid=4653, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 13:32:19,927 INFO L87 Difference]: Start difference. First operand 369 states and 370 transitions. Second operand 96 states. [2018-07-25 13:32:20,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:20,470 INFO L93 Difference]: Finished difference Result 377 states and 378 transitions. [2018-07-25 13:32:20,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2018-07-25 13:32:20,470 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 368 [2018-07-25 13:32:20,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:20,471 INFO L225 Difference]: With dead ends: 377 [2018-07-25 13:32:20,471 INFO L226 Difference]: Without dead ends: 375 [2018-07-25 13:32:20,474 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8464 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13208, Invalid=21948, Unknown=0, NotChecked=0, Total=35156 [2018-07-25 13:32:20,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2018-07-25 13:32:20,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 371. [2018-07-25 13:32:20,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2018-07-25 13:32:20,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 372 transitions. [2018-07-25 13:32:20,645 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 372 transitions. Word has length 368 [2018-07-25 13:32:20,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:20,645 INFO L472 AbstractCegarLoop]: Abstraction has 371 states and 372 transitions. [2018-07-25 13:32:20,645 INFO L473 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-07-25 13:32:20,645 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 372 transitions. [2018-07-25 13:32:20,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-07-25 13:32:20,646 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:20,646 INFO L354 BasicCegarLoop]: trace histogram [92, 92, 91, 91, 1, 1, 1, 1] [2018-07-25 13:32:20,647 INFO L415 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:20,647 INFO L82 PathProgramCache]: Analyzing trace with hash 383669819, now seen corresponding path program 181 times [2018-07-25 13:32:20,647 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:20,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:21,726 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 8372 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:21,726 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:21,727 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [185] total 185 [2018-07-25 13:32:21,727 INFO L451 AbstractCegarLoop]: Interpolant automaton has 186 states [2018-07-25 13:32:21,728 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 186 interpolants. [2018-07-25 13:32:21,730 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8741, Invalid=25669, Unknown=0, NotChecked=0, Total=34410 [2018-07-25 13:32:21,731 INFO L87 Difference]: Start difference. First operand 371 states and 372 transitions. Second operand 186 states. [2018-07-25 13:32:23,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:23,667 INFO L93 Difference]: Finished difference Result 560 states and 562 transitions. [2018-07-25 13:32:23,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2018-07-25 13:32:23,667 INFO L78 Accepts]: Start accepts. Automaton has 186 states. Word has length 370 [2018-07-25 13:32:23,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:23,668 INFO L225 Difference]: With dead ends: 560 [2018-07-25 13:32:23,668 INFO L226 Difference]: Without dead ends: 373 [2018-07-25 13:32:23,671 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 276 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12467 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=17481, Invalid=59525, Unknown=0, NotChecked=0, Total=77006 [2018-07-25 13:32:23,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2018-07-25 13:32:23,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2018-07-25 13:32:23,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2018-07-25 13:32:23,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 374 transitions. [2018-07-25 13:32:23,843 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 374 transitions. Word has length 370 [2018-07-25 13:32:23,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:23,843 INFO L472 AbstractCegarLoop]: Abstraction has 373 states and 374 transitions. [2018-07-25 13:32:23,843 INFO L473 AbstractCegarLoop]: Interpolant automaton has 186 states. [2018-07-25 13:32:23,843 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 374 transitions. [2018-07-25 13:32:23,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2018-07-25 13:32:23,844 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:23,844 INFO L354 BasicCegarLoop]: trace histogram [93, 92, 92, 91, 1, 1, 1, 1] [2018-07-25 13:32:23,844 INFO L415 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:23,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1059633547, now seen corresponding path program 182 times [2018-07-25 13:32:23,845 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:24,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:24,423 INFO L134 CoverageAnalysis]: Checked inductivity of 16928 backedges. 8556 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:24,423 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:24,424 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96] total 96 [2018-07-25 13:32:24,424 INFO L451 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-07-25 13:32:24,424 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-07-25 13:32:24,425 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4562, Invalid=4750, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 13:32:24,425 INFO L87 Difference]: Start difference. First operand 373 states and 374 transitions. Second operand 97 states. [2018-07-25 13:32:24,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:24,988 INFO L93 Difference]: Finished difference Result 381 states and 382 transitions. [2018-07-25 13:32:24,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2018-07-25 13:32:24,988 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 372 [2018-07-25 13:32:24,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:24,989 INFO L225 Difference]: With dead ends: 381 [2018-07-25 13:32:24,989 INFO L226 Difference]: Without dead ends: 379 [2018-07-25 13:32:24,992 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8649 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13491, Invalid=22419, Unknown=0, NotChecked=0, Total=35910 [2018-07-25 13:32:24,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2018-07-25 13:32:25,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 375. [2018-07-25 13:32:25,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2018-07-25 13:32:25,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 376 transitions. [2018-07-25 13:32:25,166 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 376 transitions. Word has length 372 [2018-07-25 13:32:25,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:25,166 INFO L472 AbstractCegarLoop]: Abstraction has 375 states and 376 transitions. [2018-07-25 13:32:25,166 INFO L473 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-07-25 13:32:25,166 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 376 transitions. [2018-07-25 13:32:25,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2018-07-25 13:32:25,167 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:25,168 INFO L354 BasicCegarLoop]: trace histogram [93, 93, 92, 92, 1, 1, 1, 1] [2018-07-25 13:32:25,168 INFO L415 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:25,168 INFO L82 PathProgramCache]: Analyzing trace with hash -400656271, now seen corresponding path program 183 times [2018-07-25 13:32:25,168 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:25,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:26,240 INFO L134 CoverageAnalysis]: Checked inductivity of 17112 backedges. 8556 proven. 8556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:26,241 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:26,241 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [187] total 187 [2018-07-25 13:32:26,241 INFO L451 AbstractCegarLoop]: Interpolant automaton has 188 states [2018-07-25 13:32:26,242 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2018-07-25 13:32:26,244 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8929, Invalid=26227, Unknown=0, NotChecked=0, Total=35156 [2018-07-25 13:32:26,244 INFO L87 Difference]: Start difference. First operand 375 states and 376 transitions. Second operand 188 states. [2018-07-25 13:32:28,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:28,598 INFO L93 Difference]: Finished difference Result 566 states and 568 transitions. [2018-07-25 13:32:28,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2018-07-25 13:32:28,598 INFO L78 Accepts]: Start accepts. Automaton has 188 states. Word has length 374 [2018-07-25 13:32:28,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:28,599 INFO L225 Difference]: With dead ends: 566 [2018-07-25 13:32:28,599 INFO L226 Difference]: Without dead ends: 377 [2018-07-25 13:32:28,603 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 279 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12742 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=17857, Invalid=60823, Unknown=0, NotChecked=0, Total=78680 [2018-07-25 13:32:28,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2018-07-25 13:32:28,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2018-07-25 13:32:28,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2018-07-25 13:32:28,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 378 transitions. [2018-07-25 13:32:28,760 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 378 transitions. Word has length 374 [2018-07-25 13:32:28,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:28,760 INFO L472 AbstractCegarLoop]: Abstraction has 377 states and 378 transitions. [2018-07-25 13:32:28,760 INFO L473 AbstractCegarLoop]: Interpolant automaton has 188 states. [2018-07-25 13:32:28,760 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 378 transitions. [2018-07-25 13:32:28,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2018-07-25 13:32:28,762 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:28,762 INFO L354 BasicCegarLoop]: trace histogram [94, 93, 93, 92, 1, 1, 1, 1] [2018-07-25 13:32:28,762 INFO L415 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:28,762 INFO L82 PathProgramCache]: Analyzing trace with hash 256949163, now seen corresponding path program 184 times [2018-07-25 13:32:28,762 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:28,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:29,274 INFO L134 CoverageAnalysis]: Checked inductivity of 17298 backedges. 8742 proven. 8556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:29,274 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:29,274 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-07-25 13:32:29,274 INFO L451 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-07-25 13:32:29,275 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-07-25 13:32:29,275 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4658, Invalid=4848, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 13:32:29,275 INFO L87 Difference]: Start difference. First operand 377 states and 378 transitions. Second operand 98 states. [2018-07-25 13:32:29,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:29,824 INFO L93 Difference]: Finished difference Result 385 states and 386 transitions. [2018-07-25 13:32:29,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2018-07-25 13:32:29,824 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 376 [2018-07-25 13:32:29,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:29,825 INFO L225 Difference]: With dead ends: 385 [2018-07-25 13:32:29,825 INFO L226 Difference]: Without dead ends: 383 [2018-07-25 13:32:29,828 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8836 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13777, Invalid=22895, Unknown=0, NotChecked=0, Total=36672 [2018-07-25 13:32:29,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2018-07-25 13:32:30,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 379. [2018-07-25 13:32:30,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-07-25 13:32:30,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 380 transitions. [2018-07-25 13:32:30,007 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 380 transitions. Word has length 376 [2018-07-25 13:32:30,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:30,008 INFO L472 AbstractCegarLoop]: Abstraction has 379 states and 380 transitions. [2018-07-25 13:32:30,008 INFO L473 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-07-25 13:32:30,008 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 380 transitions. [2018-07-25 13:32:30,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-07-25 13:32:30,009 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:30,009 INFO L354 BasicCegarLoop]: trace histogram [94, 94, 93, 93, 1, 1, 1, 1] [2018-07-25 13:32:30,009 INFO L415 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:30,009 INFO L82 PathProgramCache]: Analyzing trace with hash 2114943015, now seen corresponding path program 185 times [2018-07-25 13:32:30,009 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:30,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:31,186 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 8742 proven. 8742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:31,186 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:31,186 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [189] total 189 [2018-07-25 13:32:31,187 INFO L451 AbstractCegarLoop]: Interpolant automaton has 190 states [2018-07-25 13:32:31,187 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2018-07-25 13:32:31,189 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9119, Invalid=26791, Unknown=0, NotChecked=0, Total=35910 [2018-07-25 13:32:31,189 INFO L87 Difference]: Start difference. First operand 379 states and 380 transitions. Second operand 190 states. [2018-07-25 13:32:34,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:34,018 INFO L93 Difference]: Finished difference Result 572 states and 574 transitions. [2018-07-25 13:32:34,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2018-07-25 13:32:34,019 INFO L78 Accepts]: Start accepts. Automaton has 190 states. Word has length 378 [2018-07-25 13:32:34,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:34,019 INFO L225 Difference]: With dead ends: 572 [2018-07-25 13:32:34,019 INFO L226 Difference]: Without dead ends: 381 [2018-07-25 13:32:34,025 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 282 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13020 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=18237, Invalid=62135, Unknown=0, NotChecked=0, Total=80372 [2018-07-25 13:32:34,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2018-07-25 13:32:34,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2018-07-25 13:32:34,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2018-07-25 13:32:34,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 382 transitions. [2018-07-25 13:32:34,204 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 382 transitions. Word has length 378 [2018-07-25 13:32:34,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:34,204 INFO L472 AbstractCegarLoop]: Abstraction has 381 states and 382 transitions. [2018-07-25 13:32:34,204 INFO L473 AbstractCegarLoop]: Interpolant automaton has 190 states. [2018-07-25 13:32:34,204 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 382 transitions. [2018-07-25 13:32:34,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2018-07-25 13:32:34,206 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:34,206 INFO L354 BasicCegarLoop]: trace histogram [95, 94, 94, 93, 1, 1, 1, 1] [2018-07-25 13:32:34,206 INFO L415 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:34,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1872334433, now seen corresponding path program 186 times [2018-07-25 13:32:34,206 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:34,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:34,820 INFO L134 CoverageAnalysis]: Checked inductivity of 17672 backedges. 8930 proven. 8742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:34,820 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:34,820 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98] total 98 [2018-07-25 13:32:34,821 INFO L451 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-07-25 13:32:34,821 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-07-25 13:32:34,822 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4755, Invalid=4947, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 13:32:34,822 INFO L87 Difference]: Start difference. First operand 381 states and 382 transitions. Second operand 99 states. [2018-07-25 13:32:35,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:35,396 INFO L93 Difference]: Finished difference Result 389 states and 390 transitions. [2018-07-25 13:32:35,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2018-07-25 13:32:35,396 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 380 [2018-07-25 13:32:35,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:35,397 INFO L225 Difference]: With dead ends: 389 [2018-07-25 13:32:35,397 INFO L226 Difference]: Without dead ends: 387 [2018-07-25 13:32:35,400 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9025 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14066, Invalid=23376, Unknown=0, NotChecked=0, Total=37442 [2018-07-25 13:32:35,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2018-07-25 13:32:35,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 383. [2018-07-25 13:32:35,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2018-07-25 13:32:35,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 384 transitions. [2018-07-25 13:32:35,579 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 384 transitions. Word has length 380 [2018-07-25 13:32:35,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:35,580 INFO L472 AbstractCegarLoop]: Abstraction has 383 states and 384 transitions. [2018-07-25 13:32:35,580 INFO L473 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-07-25 13:32:35,580 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 384 transitions. [2018-07-25 13:32:35,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2018-07-25 13:32:35,581 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:35,581 INFO L354 BasicCegarLoop]: trace histogram [95, 95, 94, 94, 1, 1, 1, 1] [2018-07-25 13:32:35,581 INFO L415 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:35,581 INFO L82 PathProgramCache]: Analyzing trace with hash -277973667, now seen corresponding path program 187 times [2018-07-25 13:32:35,581 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:35,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:36,785 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 8930 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:36,786 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:36,786 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [191] total 191 [2018-07-25 13:32:36,786 INFO L451 AbstractCegarLoop]: Interpolant automaton has 192 states [2018-07-25 13:32:36,788 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2018-07-25 13:32:36,791 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9311, Invalid=27361, Unknown=0, NotChecked=0, Total=36672 [2018-07-25 13:32:36,791 INFO L87 Difference]: Start difference. First operand 383 states and 384 transitions. Second operand 192 states. [2018-07-25 13:32:39,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:39,066 INFO L93 Difference]: Finished difference Result 578 states and 580 transitions. [2018-07-25 13:32:39,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2018-07-25 13:32:39,066 INFO L78 Accepts]: Start accepts. Automaton has 192 states. Word has length 382 [2018-07-25 13:32:39,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:39,067 INFO L225 Difference]: With dead ends: 578 [2018-07-25 13:32:39,067 INFO L226 Difference]: Without dead ends: 385 [2018-07-25 13:32:39,074 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13301 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=18621, Invalid=63461, Unknown=0, NotChecked=0, Total=82082 [2018-07-25 13:32:39,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2018-07-25 13:32:39,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 385. [2018-07-25 13:32:39,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2018-07-25 13:32:39,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 386 transitions. [2018-07-25 13:32:39,256 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 386 transitions. Word has length 382 [2018-07-25 13:32:39,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:39,256 INFO L472 AbstractCegarLoop]: Abstraction has 385 states and 386 transitions. [2018-07-25 13:32:39,256 INFO L473 AbstractCegarLoop]: Interpolant automaton has 192 states. [2018-07-25 13:32:39,257 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 386 transitions. [2018-07-25 13:32:39,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2018-07-25 13:32:39,258 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:39,258 INFO L354 BasicCegarLoop]: trace histogram [96, 95, 95, 94, 1, 1, 1, 1] [2018-07-25 13:32:39,258 INFO L415 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:39,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1160699543, now seen corresponding path program 188 times [2018-07-25 13:32:39,258 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:39,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:39,868 INFO L134 CoverageAnalysis]: Checked inductivity of 18050 backedges. 9120 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:39,868 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:39,868 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-07-25 13:32:39,869 INFO L451 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-07-25 13:32:39,869 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-07-25 13:32:39,870 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4853, Invalid=5047, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 13:32:39,870 INFO L87 Difference]: Start difference. First operand 385 states and 386 transitions. Second operand 100 states. [2018-07-25 13:32:40,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:40,521 INFO L93 Difference]: Finished difference Result 393 states and 394 transitions. [2018-07-25 13:32:40,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2018-07-25 13:32:40,521 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 384 [2018-07-25 13:32:40,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:40,521 INFO L225 Difference]: With dead ends: 393 [2018-07-25 13:32:40,521 INFO L226 Difference]: Without dead ends: 391 [2018-07-25 13:32:40,523 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9216 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14358, Invalid=23862, Unknown=0, NotChecked=0, Total=38220 [2018-07-25 13:32:40,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2018-07-25 13:32:40,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 387. [2018-07-25 13:32:40,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2018-07-25 13:32:40,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 388 transitions. [2018-07-25 13:32:40,710 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 388 transitions. Word has length 384 [2018-07-25 13:32:40,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:40,710 INFO L472 AbstractCegarLoop]: Abstraction has 387 states and 388 transitions. [2018-07-25 13:32:40,710 INFO L473 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-07-25 13:32:40,710 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 388 transitions. [2018-07-25 13:32:40,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2018-07-25 13:32:40,712 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:40,712 INFO L354 BasicCegarLoop]: trace histogram [96, 96, 95, 95, 1, 1, 1, 1] [2018-07-25 13:32:40,712 INFO L415 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:40,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1259302893, now seen corresponding path program 189 times [2018-07-25 13:32:40,713 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:40,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:41,895 INFO L134 CoverageAnalysis]: Checked inductivity of 18240 backedges. 9120 proven. 9120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:41,895 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:41,896 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [193] total 193 [2018-07-25 13:32:41,896 INFO L451 AbstractCegarLoop]: Interpolant automaton has 194 states [2018-07-25 13:32:41,897 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2018-07-25 13:32:41,900 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9505, Invalid=27937, Unknown=0, NotChecked=0, Total=37442 [2018-07-25 13:32:41,900 INFO L87 Difference]: Start difference. First operand 387 states and 388 transitions. Second operand 194 states. [2018-07-25 13:32:43,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:43,735 INFO L93 Difference]: Finished difference Result 584 states and 586 transitions. [2018-07-25 13:32:43,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2018-07-25 13:32:43,735 INFO L78 Accepts]: Start accepts. Automaton has 194 states. Word has length 386 [2018-07-25 13:32:43,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:43,736 INFO L225 Difference]: With dead ends: 584 [2018-07-25 13:32:43,736 INFO L226 Difference]: Without dead ends: 389 [2018-07-25 13:32:43,743 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 288 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13585 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=19009, Invalid=64801, Unknown=0, NotChecked=0, Total=83810 [2018-07-25 13:32:43,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2018-07-25 13:32:43,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 389. [2018-07-25 13:32:43,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2018-07-25 13:32:43,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 390 transitions. [2018-07-25 13:32:43,929 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 390 transitions. Word has length 386 [2018-07-25 13:32:43,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:43,930 INFO L472 AbstractCegarLoop]: Abstraction has 389 states and 390 transitions. [2018-07-25 13:32:43,930 INFO L473 AbstractCegarLoop]: Interpolant automaton has 194 states. [2018-07-25 13:32:43,930 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 390 transitions. [2018-07-25 13:32:43,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2018-07-25 13:32:43,931 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:43,931 INFO L354 BasicCegarLoop]: trace histogram [97, 96, 96, 95, 1, 1, 1, 1] [2018-07-25 13:32:43,931 INFO L415 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:43,931 INFO L82 PathProgramCache]: Analyzing trace with hash -175780787, now seen corresponding path program 190 times [2018-07-25 13:32:43,932 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:44,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:44,657 INFO L134 CoverageAnalysis]: Checked inductivity of 18432 backedges. 9312 proven. 9120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:44,657 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:44,657 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100] total 100 [2018-07-25 13:32:44,658 INFO L451 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-07-25 13:32:44,658 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-07-25 13:32:44,659 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4952, Invalid=5148, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 13:32:44,659 INFO L87 Difference]: Start difference. First operand 389 states and 390 transitions. Second operand 101 states. [2018-07-25 13:32:45,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:45,264 INFO L93 Difference]: Finished difference Result 397 states and 398 transitions. [2018-07-25 13:32:45,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2018-07-25 13:32:45,264 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 388 [2018-07-25 13:32:45,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:45,265 INFO L225 Difference]: With dead ends: 397 [2018-07-25 13:32:45,265 INFO L226 Difference]: Without dead ends: 395 [2018-07-25 13:32:45,268 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9409 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14653, Invalid=24353, Unknown=0, NotChecked=0, Total=39006 [2018-07-25 13:32:45,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2018-07-25 13:32:45,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 391. [2018-07-25 13:32:45,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2018-07-25 13:32:45,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 392 transitions. [2018-07-25 13:32:45,458 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 392 transitions. Word has length 388 [2018-07-25 13:32:45,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:45,459 INFO L472 AbstractCegarLoop]: Abstraction has 391 states and 392 transitions. [2018-07-25 13:32:45,459 INFO L473 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-07-25 13:32:45,459 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 392 transitions. [2018-07-25 13:32:45,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2018-07-25 13:32:45,461 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:45,461 INFO L354 BasicCegarLoop]: trace histogram [97, 97, 96, 96, 1, 1, 1, 1] [2018-07-25 13:32:45,461 INFO L415 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:45,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1421678519, now seen corresponding path program 191 times [2018-07-25 13:32:45,462 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:45,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:46,659 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 9312 proven. 9312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:46,659 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:46,659 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [195] total 195 [2018-07-25 13:32:46,660 INFO L451 AbstractCegarLoop]: Interpolant automaton has 196 states [2018-07-25 13:32:46,661 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2018-07-25 13:32:46,664 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9701, Invalid=28519, Unknown=0, NotChecked=0, Total=38220 [2018-07-25 13:32:46,664 INFO L87 Difference]: Start difference. First operand 391 states and 392 transitions. Second operand 196 states. [2018-07-25 13:32:48,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:48,957 INFO L93 Difference]: Finished difference Result 590 states and 592 transitions. [2018-07-25 13:32:48,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2018-07-25 13:32:48,957 INFO L78 Accepts]: Start accepts. Automaton has 196 states. Word has length 390 [2018-07-25 13:32:48,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:48,958 INFO L225 Difference]: With dead ends: 590 [2018-07-25 13:32:48,958 INFO L226 Difference]: Without dead ends: 393 [2018-07-25 13:32:48,966 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 291 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13872 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=19401, Invalid=66155, Unknown=0, NotChecked=0, Total=85556 [2018-07-25 13:32:48,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2018-07-25 13:32:49,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2018-07-25 13:32:49,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2018-07-25 13:32:49,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 394 transitions. [2018-07-25 13:32:49,218 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 394 transitions. Word has length 390 [2018-07-25 13:32:49,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:49,218 INFO L472 AbstractCegarLoop]: Abstraction has 393 states and 394 transitions. [2018-07-25 13:32:49,218 INFO L473 AbstractCegarLoop]: Interpolant automaton has 196 states. [2018-07-25 13:32:49,218 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 394 transitions. [2018-07-25 13:32:49,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2018-07-25 13:32:49,220 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:49,220 INFO L354 BasicCegarLoop]: trace histogram [98, 97, 97, 96, 1, 1, 1, 1] [2018-07-25 13:32:49,220 INFO L415 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:49,220 INFO L82 PathProgramCache]: Analyzing trace with hash -368347261, now seen corresponding path program 192 times [2018-07-25 13:32:49,220 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:49,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:49,870 INFO L134 CoverageAnalysis]: Checked inductivity of 18818 backedges. 9506 proven. 9312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:49,870 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:49,870 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-07-25 13:32:49,871 INFO L451 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-07-25 13:32:49,871 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-07-25 13:32:49,872 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5052, Invalid=5250, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 13:32:49,872 INFO L87 Difference]: Start difference. First operand 393 states and 394 transitions. Second operand 102 states. [2018-07-25 13:32:50,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:50,507 INFO L93 Difference]: Finished difference Result 401 states and 402 transitions. [2018-07-25 13:32:50,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2018-07-25 13:32:50,507 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 392 [2018-07-25 13:32:50,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:50,508 INFO L225 Difference]: With dead ends: 401 [2018-07-25 13:32:50,508 INFO L226 Difference]: Without dead ends: 399 [2018-07-25 13:32:50,511 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9604 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14951, Invalid=24849, Unknown=0, NotChecked=0, Total=39800 [2018-07-25 13:32:50,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2018-07-25 13:32:50,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 395. [2018-07-25 13:32:50,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2018-07-25 13:32:50,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 396 transitions. [2018-07-25 13:32:50,705 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 396 transitions. Word has length 392 [2018-07-25 13:32:50,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:50,705 INFO L472 AbstractCegarLoop]: Abstraction has 395 states and 396 transitions. [2018-07-25 13:32:50,705 INFO L473 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-07-25 13:32:50,705 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 396 transitions. [2018-07-25 13:32:50,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2018-07-25 13:32:50,706 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:50,706 INFO L354 BasicCegarLoop]: trace histogram [98, 98, 97, 97, 1, 1, 1, 1] [2018-07-25 13:32:50,707 INFO L415 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:50,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1794466305, now seen corresponding path program 193 times [2018-07-25 13:32:50,707 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:50,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:51,968 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 9506 proven. 9506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:51,968 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:51,968 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [197] total 197 [2018-07-25 13:32:51,968 INFO L451 AbstractCegarLoop]: Interpolant automaton has 198 states [2018-07-25 13:32:51,970 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2018-07-25 13:32:51,973 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9899, Invalid=29107, Unknown=0, NotChecked=0, Total=39006 [2018-07-25 13:32:51,973 INFO L87 Difference]: Start difference. First operand 395 states and 396 transitions. Second operand 198 states. [2018-07-25 13:32:54,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:54,061 INFO L93 Difference]: Finished difference Result 596 states and 598 transitions. [2018-07-25 13:32:54,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2018-07-25 13:32:54,061 INFO L78 Accepts]: Start accepts. Automaton has 198 states. Word has length 394 [2018-07-25 13:32:54,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:54,062 INFO L225 Difference]: With dead ends: 596 [2018-07-25 13:32:54,062 INFO L226 Difference]: Without dead ends: 397 [2018-07-25 13:32:54,066 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 294 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14162 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=19797, Invalid=67523, Unknown=0, NotChecked=0, Total=87320 [2018-07-25 13:32:54,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2018-07-25 13:32:54,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 397. [2018-07-25 13:32:54,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2018-07-25 13:32:54,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 398 transitions. [2018-07-25 13:32:54,260 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 398 transitions. Word has length 394 [2018-07-25 13:32:54,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:54,260 INFO L472 AbstractCegarLoop]: Abstraction has 397 states and 398 transitions. [2018-07-25 13:32:54,260 INFO L473 AbstractCegarLoop]: Interpolant automaton has 198 states. [2018-07-25 13:32:54,260 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 398 transitions. [2018-07-25 13:32:54,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2018-07-25 13:32:54,262 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:54,262 INFO L354 BasicCegarLoop]: trace histogram [99, 98, 98, 97, 1, 1, 1, 1] [2018-07-25 13:32:54,262 INFO L415 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:54,262 INFO L82 PathProgramCache]: Analyzing trace with hash 304414777, now seen corresponding path program 194 times [2018-07-25 13:32:54,262 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:54,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:54,921 INFO L134 CoverageAnalysis]: Checked inductivity of 19208 backedges. 9702 proven. 9506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:54,922 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:54,922 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102] total 102 [2018-07-25 13:32:54,922 INFO L451 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-07-25 13:32:54,923 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-07-25 13:32:54,923 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 13:32:54,923 INFO L87 Difference]: Start difference. First operand 397 states and 398 transitions. Second operand 103 states. [2018-07-25 13:32:55,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:55,580 INFO L93 Difference]: Finished difference Result 405 states and 406 transitions. [2018-07-25 13:32:55,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2018-07-25 13:32:55,580 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 396 [2018-07-25 13:32:55,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:55,581 INFO L225 Difference]: With dead ends: 405 [2018-07-25 13:32:55,581 INFO L226 Difference]: Without dead ends: 403 [2018-07-25 13:32:55,584 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9801 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15252, Invalid=25350, Unknown=0, NotChecked=0, Total=40602 [2018-07-25 13:32:55,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2018-07-25 13:32:55,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 399. [2018-07-25 13:32:55,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2018-07-25 13:32:55,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 400 transitions. [2018-07-25 13:32:55,778 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 400 transitions. Word has length 396 [2018-07-25 13:32:55,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:55,778 INFO L472 AbstractCegarLoop]: Abstraction has 399 states and 400 transitions. [2018-07-25 13:32:55,778 INFO L473 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-07-25 13:32:55,778 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 400 transitions. [2018-07-25 13:32:55,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2018-07-25 13:32:55,780 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:55,780 INFO L354 BasicCegarLoop]: trace histogram [99, 99, 98, 98, 1, 1, 1, 1] [2018-07-25 13:32:55,780 INFO L415 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:55,780 INFO L82 PathProgramCache]: Analyzing trace with hash 484757813, now seen corresponding path program 195 times [2018-07-25 13:32:55,780 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:56,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:57,053 INFO L134 CoverageAnalysis]: Checked inductivity of 19404 backedges. 9702 proven. 9702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:32:57,054 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:57,054 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [199] total 199 [2018-07-25 13:32:57,054 INFO L451 AbstractCegarLoop]: Interpolant automaton has 200 states [2018-07-25 13:32:57,055 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2018-07-25 13:32:57,057 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10099, Invalid=29701, Unknown=0, NotChecked=0, Total=39800 [2018-07-25 13:32:57,057 INFO L87 Difference]: Start difference. First operand 399 states and 400 transitions. Second operand 200 states. [2018-07-25 13:32:59,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:59,414 INFO L93 Difference]: Finished difference Result 602 states and 604 transitions. [2018-07-25 13:32:59,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2018-07-25 13:32:59,414 INFO L78 Accepts]: Start accepts. Automaton has 200 states. Word has length 398 [2018-07-25 13:32:59,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:59,415 INFO L225 Difference]: With dead ends: 602 [2018-07-25 13:32:59,415 INFO L226 Difference]: Without dead ends: 401 [2018-07-25 13:32:59,421 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 297 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14455 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=20197, Invalid=68905, Unknown=0, NotChecked=0, Total=89102 [2018-07-25 13:32:59,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2018-07-25 13:32:59,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2018-07-25 13:32:59,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2018-07-25 13:32:59,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 402 transitions. [2018-07-25 13:32:59,619 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 402 transitions. Word has length 398 [2018-07-25 13:32:59,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:59,619 INFO L472 AbstractCegarLoop]: Abstraction has 401 states and 402 transitions. [2018-07-25 13:32:59,619 INFO L473 AbstractCegarLoop]: Interpolant automaton has 200 states. [2018-07-25 13:32:59,619 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 402 transitions. [2018-07-25 13:32:59,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2018-07-25 13:32:59,620 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:59,620 INFO L354 BasicCegarLoop]: trace histogram [100, 99, 99, 98, 1, 1, 1, 1] [2018-07-25 13:32:59,621 INFO L415 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:59,621 INFO L82 PathProgramCache]: Analyzing trace with hash -449870225, now seen corresponding path program 196 times [2018-07-25 13:32:59,621 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:59,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:00,302 INFO L134 CoverageAnalysis]: Checked inductivity of 19602 backedges. 9900 proven. 9702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:00,302 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:00,302 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-07-25 13:33:00,303 INFO L451 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-07-25 13:33:00,303 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-07-25 13:33:00,304 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5255, Invalid=5457, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 13:33:00,304 INFO L87 Difference]: Start difference. First operand 401 states and 402 transitions. Second operand 104 states. [2018-07-25 13:33:00,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:00,979 INFO L93 Difference]: Finished difference Result 409 states and 410 transitions. [2018-07-25 13:33:00,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2018-07-25 13:33:00,979 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 400 [2018-07-25 13:33:00,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:00,980 INFO L225 Difference]: With dead ends: 409 [2018-07-25 13:33:00,980 INFO L226 Difference]: Without dead ends: 407 [2018-07-25 13:33:00,983 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10000 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15556, Invalid=25856, Unknown=0, NotChecked=0, Total=41412 [2018-07-25 13:33:00,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2018-07-25 13:33:01,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 403. [2018-07-25 13:33:01,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2018-07-25 13:33:01,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 404 transitions. [2018-07-25 13:33:01,185 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 404 transitions. Word has length 400 [2018-07-25 13:33:01,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:01,185 INFO L472 AbstractCegarLoop]: Abstraction has 403 states and 404 transitions. [2018-07-25 13:33:01,185 INFO L473 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-07-25 13:33:01,185 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 404 transitions. [2018-07-25 13:33:01,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2018-07-25 13:33:01,187 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:01,187 INFO L354 BasicCegarLoop]: trace histogram [100, 100, 99, 99, 1, 1, 1, 1] [2018-07-25 13:33:01,187 INFO L415 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:01,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1466343915, now seen corresponding path program 197 times [2018-07-25 13:33:01,187 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:01,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:02,517 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 9900 proven. 9900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:02,518 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:02,518 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [201] total 201 [2018-07-25 13:33:02,519 INFO L451 AbstractCegarLoop]: Interpolant automaton has 202 states [2018-07-25 13:33:02,520 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 202 interpolants. [2018-07-25 13:33:02,524 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10301, Invalid=30301, Unknown=0, NotChecked=0, Total=40602 [2018-07-25 13:33:02,524 INFO L87 Difference]: Start difference. First operand 403 states and 404 transitions. Second operand 202 states. [2018-07-25 13:33:05,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:05,173 INFO L93 Difference]: Finished difference Result 608 states and 610 transitions. [2018-07-25 13:33:05,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2018-07-25 13:33:05,173 INFO L78 Accepts]: Start accepts. Automaton has 202 states. Word has length 402 [2018-07-25 13:33:05,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:05,174 INFO L225 Difference]: With dead ends: 608 [2018-07-25 13:33:05,174 INFO L226 Difference]: Without dead ends: 405 [2018-07-25 13:33:05,183 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 300 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14751 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=20601, Invalid=70301, Unknown=0, NotChecked=0, Total=90902 [2018-07-25 13:33:05,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2018-07-25 13:33:05,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 405. [2018-07-25 13:33:05,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2018-07-25 13:33:05,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 406 transitions. [2018-07-25 13:33:05,385 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 406 transitions. Word has length 402 [2018-07-25 13:33:05,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:05,385 INFO L472 AbstractCegarLoop]: Abstraction has 405 states and 406 transitions. [2018-07-25 13:33:05,385 INFO L473 AbstractCegarLoop]: Interpolant automaton has 202 states. [2018-07-25 13:33:05,385 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 406 transitions. [2018-07-25 13:33:05,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2018-07-25 13:33:05,386 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:05,386 INFO L354 BasicCegarLoop]: trace histogram [101, 100, 100, 99, 1, 1, 1, 1] [2018-07-25 13:33:05,386 INFO L415 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:05,387 INFO L82 PathProgramCache]: Analyzing trace with hash -461362651, now seen corresponding path program 198 times [2018-07-25 13:33:05,387 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:05,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:06,147 INFO L134 CoverageAnalysis]: Checked inductivity of 20000 backedges. 10100 proven. 9900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:06,147 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:06,147 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104] total 104 [2018-07-25 13:33:06,147 INFO L451 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-07-25 13:33:06,148 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-07-25 13:33:06,148 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5358, Invalid=5562, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 13:33:06,149 INFO L87 Difference]: Start difference. First operand 405 states and 406 transitions. Second operand 105 states. [2018-07-25 13:33:06,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:06,802 INFO L93 Difference]: Finished difference Result 413 states and 414 transitions. [2018-07-25 13:33:06,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2018-07-25 13:33:06,802 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 404 [2018-07-25 13:33:06,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:06,803 INFO L225 Difference]: With dead ends: 413 [2018-07-25 13:33:06,803 INFO L226 Difference]: Without dead ends: 411 [2018-07-25 13:33:06,807 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10201 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15863, Invalid=26367, Unknown=0, NotChecked=0, Total=42230 [2018-07-25 13:33:06,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2018-07-25 13:33:07,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 407. [2018-07-25 13:33:07,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2018-07-25 13:33:07,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 408 transitions. [2018-07-25 13:33:07,013 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 408 transitions. Word has length 404 [2018-07-25 13:33:07,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:07,013 INFO L472 AbstractCegarLoop]: Abstraction has 407 states and 408 transitions. [2018-07-25 13:33:07,013 INFO L473 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-07-25 13:33:07,014 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 408 transitions. [2018-07-25 13:33:07,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2018-07-25 13:33:07,015 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:07,015 INFO L354 BasicCegarLoop]: trace histogram [101, 101, 100, 100, 1, 1, 1, 1] [2018-07-25 13:33:07,015 INFO L415 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:07,015 INFO L82 PathProgramCache]: Analyzing trace with hash -987942879, now seen corresponding path program 199 times [2018-07-25 13:33:07,015 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:07,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:08,335 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 10100 proven. 10100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:08,335 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:08,336 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [203] total 203 [2018-07-25 13:33:08,336 INFO L451 AbstractCegarLoop]: Interpolant automaton has 204 states [2018-07-25 13:33:08,338 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2018-07-25 13:33:08,341 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10505, Invalid=30907, Unknown=0, NotChecked=0, Total=41412 [2018-07-25 13:33:08,341 INFO L87 Difference]: Start difference. First operand 407 states and 408 transitions. Second operand 204 states. [2018-07-25 13:33:10,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:10,958 INFO L93 Difference]: Finished difference Result 614 states and 616 transitions. [2018-07-25 13:33:10,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2018-07-25 13:33:10,959 INFO L78 Accepts]: Start accepts. Automaton has 204 states. Word has length 406 [2018-07-25 13:33:10,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:10,960 INFO L225 Difference]: With dead ends: 614 [2018-07-25 13:33:10,960 INFO L226 Difference]: Without dead ends: 409 [2018-07-25 13:33:10,964 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 303 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15050 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=21009, Invalid=71711, Unknown=0, NotChecked=0, Total=92720 [2018-07-25 13:33:10,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2018-07-25 13:33:11,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 409. [2018-07-25 13:33:11,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2018-07-25 13:33:11,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 410 transitions. [2018-07-25 13:33:11,176 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 410 transitions. Word has length 406 [2018-07-25 13:33:11,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:11,176 INFO L472 AbstractCegarLoop]: Abstraction has 409 states and 410 transitions. [2018-07-25 13:33:11,176 INFO L473 AbstractCegarLoop]: Interpolant automaton has 204 states. [2018-07-25 13:33:11,176 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 410 transitions. [2018-07-25 13:33:11,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-07-25 13:33:11,178 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:11,178 INFO L354 BasicCegarLoop]: trace histogram [102, 101, 101, 100, 1, 1, 1, 1] [2018-07-25 13:33:11,178 INFO L415 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:11,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1654387877, now seen corresponding path program 200 times [2018-07-25 13:33:11,178 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:11,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:11,900 INFO L134 CoverageAnalysis]: Checked inductivity of 20402 backedges. 10302 proven. 10100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:11,901 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:11,901 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2018-07-25 13:33:11,901 INFO L451 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-07-25 13:33:11,902 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-07-25 13:33:11,902 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5462, Invalid=5668, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 13:33:11,902 INFO L87 Difference]: Start difference. First operand 409 states and 410 transitions. Second operand 106 states. [2018-07-25 13:33:12,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:12,606 INFO L93 Difference]: Finished difference Result 417 states and 418 transitions. [2018-07-25 13:33:12,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2018-07-25 13:33:12,606 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 408 [2018-07-25 13:33:12,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:12,607 INFO L225 Difference]: With dead ends: 417 [2018-07-25 13:33:12,607 INFO L226 Difference]: Without dead ends: 415 [2018-07-25 13:33:12,611 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10404 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=16173, Invalid=26883, Unknown=0, NotChecked=0, Total=43056 [2018-07-25 13:33:12,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2018-07-25 13:33:12,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 411. [2018-07-25 13:33:12,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2018-07-25 13:33:12,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 412 transitions. [2018-07-25 13:33:12,820 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 412 transitions. Word has length 408 [2018-07-25 13:33:12,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:12,820 INFO L472 AbstractCegarLoop]: Abstraction has 411 states and 412 transitions. [2018-07-25 13:33:12,821 INFO L473 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-07-25 13:33:12,821 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 412 transitions. [2018-07-25 13:33:12,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2018-07-25 13:33:12,822 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:12,822 INFO L354 BasicCegarLoop]: trace histogram [102, 102, 101, 101, 1, 1, 1, 1] [2018-07-25 13:33:12,822 INFO L415 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:12,822 INFO L82 PathProgramCache]: Analyzing trace with hash -728917033, now seen corresponding path program 201 times [2018-07-25 13:33:12,822 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:13,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:14,234 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 10302 proven. 10302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:14,234 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:14,234 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [205] total 205 [2018-07-25 13:33:14,235 INFO L451 AbstractCegarLoop]: Interpolant automaton has 206 states [2018-07-25 13:33:14,236 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 206 interpolants. [2018-07-25 13:33:14,237 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10711, Invalid=31519, Unknown=0, NotChecked=0, Total=42230 [2018-07-25 13:33:14,237 INFO L87 Difference]: Start difference. First operand 411 states and 412 transitions. Second operand 206 states. [2018-07-25 13:33:16,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:16,602 INFO L93 Difference]: Finished difference Result 620 states and 622 transitions. [2018-07-25 13:33:16,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2018-07-25 13:33:16,602 INFO L78 Accepts]: Start accepts. Automaton has 206 states. Word has length 410 [2018-07-25 13:33:16,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:16,603 INFO L225 Difference]: With dead ends: 620 [2018-07-25 13:33:16,603 INFO L226 Difference]: Without dead ends: 413 [2018-07-25 13:33:16,608 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 306 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15352 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=21421, Invalid=73135, Unknown=0, NotChecked=0, Total=94556 [2018-07-25 13:33:16,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2018-07-25 13:33:16,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 413. [2018-07-25 13:33:16,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2018-07-25 13:33:16,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 414 transitions. [2018-07-25 13:33:16,816 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 414 transitions. Word has length 410 [2018-07-25 13:33:16,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:16,816 INFO L472 AbstractCegarLoop]: Abstraction has 413 states and 414 transitions. [2018-07-25 13:33:16,816 INFO L473 AbstractCegarLoop]: Interpolant automaton has 206 states. [2018-07-25 13:33:16,817 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 414 transitions. [2018-07-25 13:33:16,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2018-07-25 13:33:16,818 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:16,818 INFO L354 BasicCegarLoop]: trace histogram [103, 102, 102, 101, 1, 1, 1, 1] [2018-07-25 13:33:16,818 INFO L415 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:16,818 INFO L82 PathProgramCache]: Analyzing trace with hash 723536401, now seen corresponding path program 202 times [2018-07-25 13:33:16,818 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:17,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:17,571 INFO L134 CoverageAnalysis]: Checked inductivity of 20808 backedges. 10506 proven. 10302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:17,572 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:17,572 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106] total 106 [2018-07-25 13:33:17,572 INFO L451 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-07-25 13:33:17,573 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-07-25 13:33:17,574 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5567, Invalid=5775, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 13:33:17,574 INFO L87 Difference]: Start difference. First operand 413 states and 414 transitions. Second operand 107 states. [2018-07-25 13:33:18,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:18,294 INFO L93 Difference]: Finished difference Result 421 states and 422 transitions. [2018-07-25 13:33:18,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2018-07-25 13:33:18,294 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 412 [2018-07-25 13:33:18,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:18,295 INFO L225 Difference]: With dead ends: 421 [2018-07-25 13:33:18,295 INFO L226 Difference]: Without dead ends: 419 [2018-07-25 13:33:18,298 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10609 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=16486, Invalid=27404, Unknown=0, NotChecked=0, Total=43890 [2018-07-25 13:33:18,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2018-07-25 13:33:18,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 415. [2018-07-25 13:33:18,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2018-07-25 13:33:18,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 416 transitions. [2018-07-25 13:33:18,512 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 416 transitions. Word has length 412 [2018-07-25 13:33:18,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:18,512 INFO L472 AbstractCegarLoop]: Abstraction has 415 states and 416 transitions. [2018-07-25 13:33:18,512 INFO L473 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-07-25 13:33:18,512 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 416 transitions. [2018-07-25 13:33:18,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2018-07-25 13:33:18,513 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:18,514 INFO L354 BasicCegarLoop]: trace histogram [103, 103, 102, 102, 1, 1, 1, 1] [2018-07-25 13:33:18,514 INFO L415 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:18,514 INFO L82 PathProgramCache]: Analyzing trace with hash -466287347, now seen corresponding path program 203 times [2018-07-25 13:33:18,514 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:18,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:19,893 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 10506 proven. 10506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:19,893 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:19,893 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [207] total 207 [2018-07-25 13:33:19,894 INFO L451 AbstractCegarLoop]: Interpolant automaton has 208 states [2018-07-25 13:33:19,895 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 208 interpolants. [2018-07-25 13:33:19,897 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10919, Invalid=32137, Unknown=0, NotChecked=0, Total=43056 [2018-07-25 13:33:19,897 INFO L87 Difference]: Start difference. First operand 415 states and 416 transitions. Second operand 208 states. [2018-07-25 13:33:22,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:22,583 INFO L93 Difference]: Finished difference Result 626 states and 628 transitions. [2018-07-25 13:33:22,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2018-07-25 13:33:22,583 INFO L78 Accepts]: Start accepts. Automaton has 208 states. Word has length 414 [2018-07-25 13:33:22,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:22,584 INFO L225 Difference]: With dead ends: 626 [2018-07-25 13:33:22,584 INFO L226 Difference]: Without dead ends: 417 [2018-07-25 13:33:22,593 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 309 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15657 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=21837, Invalid=74573, Unknown=0, NotChecked=0, Total=96410 [2018-07-25 13:33:22,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2018-07-25 13:33:22,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 417. [2018-07-25 13:33:22,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2018-07-25 13:33:22,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 418 transitions. [2018-07-25 13:33:22,808 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 418 transitions. Word has length 414 [2018-07-25 13:33:22,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:22,808 INFO L472 AbstractCegarLoop]: Abstraction has 417 states and 418 transitions. [2018-07-25 13:33:22,808 INFO L473 AbstractCegarLoop]: Interpolant automaton has 208 states. [2018-07-25 13:33:22,808 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 418 transitions. [2018-07-25 13:33:22,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2018-07-25 13:33:22,810 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:22,810 INFO L354 BasicCegarLoop]: trace histogram [104, 103, 103, 102, 1, 1, 1, 1] [2018-07-25 13:33:22,810 INFO L415 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:22,810 INFO L82 PathProgramCache]: Analyzing trace with hash 955385415, now seen corresponding path program 204 times [2018-07-25 13:33:22,810 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:23,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:23,634 INFO L134 CoverageAnalysis]: Checked inductivity of 21218 backedges. 10712 proven. 10506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:23,635 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:23,635 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2018-07-25 13:33:23,635 INFO L451 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-07-25 13:33:23,636 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-07-25 13:33:23,636 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5673, Invalid=5883, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 13:33:23,636 INFO L87 Difference]: Start difference. First operand 417 states and 418 transitions. Second operand 108 states. [2018-07-25 13:33:24,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:24,314 INFO L93 Difference]: Finished difference Result 425 states and 426 transitions. [2018-07-25 13:33:24,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2018-07-25 13:33:24,314 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 416 [2018-07-25 13:33:24,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:24,315 INFO L225 Difference]: With dead ends: 425 [2018-07-25 13:33:24,315 INFO L226 Difference]: Without dead ends: 423 [2018-07-25 13:33:24,318 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10816 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=16802, Invalid=27930, Unknown=0, NotChecked=0, Total=44732 [2018-07-25 13:33:24,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2018-07-25 13:33:24,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 419. [2018-07-25 13:33:24,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2018-07-25 13:33:24,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 420 transitions. [2018-07-25 13:33:24,531 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 420 transitions. Word has length 416 [2018-07-25 13:33:24,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:24,531 INFO L472 AbstractCegarLoop]: Abstraction has 419 states and 420 transitions. [2018-07-25 13:33:24,531 INFO L473 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-07-25 13:33:24,531 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 420 transitions. [2018-07-25 13:33:24,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2018-07-25 13:33:24,532 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:24,532 INFO L354 BasicCegarLoop]: trace histogram [104, 104, 103, 103, 1, 1, 1, 1] [2018-07-25 13:33:24,533 INFO L415 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:24,533 INFO L82 PathProgramCache]: Analyzing trace with hash -997684285, now seen corresponding path program 205 times [2018-07-25 13:33:24,533 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:24,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:25,953 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 10712 proven. 10712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:25,954 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:25,954 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [209] total 209 [2018-07-25 13:33:25,954 INFO L451 AbstractCegarLoop]: Interpolant automaton has 210 states [2018-07-25 13:33:25,955 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 210 interpolants. [2018-07-25 13:33:25,958 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11129, Invalid=32761, Unknown=0, NotChecked=0, Total=43890 [2018-07-25 13:33:25,958 INFO L87 Difference]: Start difference. First operand 419 states and 420 transitions. Second operand 210 states. [2018-07-25 13:33:28,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:28,215 INFO L93 Difference]: Finished difference Result 632 states and 634 transitions. [2018-07-25 13:33:28,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2018-07-25 13:33:28,215 INFO L78 Accepts]: Start accepts. Automaton has 210 states. Word has length 418 [2018-07-25 13:33:28,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:28,216 INFO L225 Difference]: With dead ends: 632 [2018-07-25 13:33:28,216 INFO L226 Difference]: Without dead ends: 421 [2018-07-25 13:33:28,220 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 312 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15965 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=22257, Invalid=76025, Unknown=0, NotChecked=0, Total=98282 [2018-07-25 13:33:28,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2018-07-25 13:33:28,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2018-07-25 13:33:28,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2018-07-25 13:33:28,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 422 transitions. [2018-07-25 13:33:28,439 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 422 transitions. Word has length 418 [2018-07-25 13:33:28,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:28,439 INFO L472 AbstractCegarLoop]: Abstraction has 421 states and 422 transitions. [2018-07-25 13:33:28,439 INFO L473 AbstractCegarLoop]: Interpolant automaton has 210 states. [2018-07-25 13:33:28,439 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 422 transitions. [2018-07-25 13:33:28,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2018-07-25 13:33:28,441 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:28,441 INFO L354 BasicCegarLoop]: trace histogram [105, 104, 104, 103, 1, 1, 1, 1] [2018-07-25 13:33:28,441 INFO L415 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:28,441 INFO L82 PathProgramCache]: Analyzing trace with hash -2079432707, now seen corresponding path program 206 times [2018-07-25 13:33:28,441 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:28,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:29,210 INFO L134 CoverageAnalysis]: Checked inductivity of 21632 backedges. 10920 proven. 10712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:29,210 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:29,210 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108] total 108 [2018-07-25 13:33:29,211 INFO L451 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-07-25 13:33:29,211 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-07-25 13:33:29,212 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5780, Invalid=5992, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 13:33:29,212 INFO L87 Difference]: Start difference. First operand 421 states and 422 transitions. Second operand 109 states. [2018-07-25 13:33:30,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:30,039 INFO L93 Difference]: Finished difference Result 429 states and 430 transitions. [2018-07-25 13:33:30,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2018-07-25 13:33:30,039 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 420 [2018-07-25 13:33:30,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:30,040 INFO L225 Difference]: With dead ends: 429 [2018-07-25 13:33:30,040 INFO L226 Difference]: Without dead ends: 427 [2018-07-25 13:33:30,044 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11025 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17121, Invalid=28461, Unknown=0, NotChecked=0, Total=45582 [2018-07-25 13:33:30,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2018-07-25 13:33:30,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 423. [2018-07-25 13:33:30,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2018-07-25 13:33:30,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 424 transitions. [2018-07-25 13:33:30,268 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 424 transitions. Word has length 420 [2018-07-25 13:33:30,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:30,268 INFO L472 AbstractCegarLoop]: Abstraction has 423 states and 424 transitions. [2018-07-25 13:33:30,268 INFO L473 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-07-25 13:33:30,268 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 424 transitions. [2018-07-25 13:33:30,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2018-07-25 13:33:30,270 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:30,270 INFO L354 BasicCegarLoop]: trace histogram [105, 105, 104, 104, 1, 1, 1, 1] [2018-07-25 13:33:30,270 INFO L415 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:30,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1175105543, now seen corresponding path program 207 times [2018-07-25 13:33:30,270 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:30,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:31,740 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 10920 proven. 10920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:31,741 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:31,741 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [211] total 211 [2018-07-25 13:33:31,741 INFO L451 AbstractCegarLoop]: Interpolant automaton has 212 states [2018-07-25 13:33:31,742 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 212 interpolants. [2018-07-25 13:33:31,744 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11341, Invalid=33391, Unknown=0, NotChecked=0, Total=44732 [2018-07-25 13:33:31,744 INFO L87 Difference]: Start difference. First operand 423 states and 424 transitions. Second operand 212 states. [2018-07-25 13:33:33,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:33,609 INFO L93 Difference]: Finished difference Result 638 states and 640 transitions. [2018-07-25 13:33:33,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2018-07-25 13:33:33,609 INFO L78 Accepts]: Start accepts. Automaton has 212 states. Word has length 422 [2018-07-25 13:33:33,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:33,610 INFO L225 Difference]: With dead ends: 638 [2018-07-25 13:33:33,610 INFO L226 Difference]: Without dead ends: 425 [2018-07-25 13:33:33,618 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 315 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16276 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=22681, Invalid=77491, Unknown=0, NotChecked=0, Total=100172 [2018-07-25 13:33:33,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2018-07-25 13:33:33,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 425. [2018-07-25 13:33:33,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2018-07-25 13:33:33,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 426 transitions. [2018-07-25 13:33:33,841 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 426 transitions. Word has length 422 [2018-07-25 13:33:33,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:33,841 INFO L472 AbstractCegarLoop]: Abstraction has 425 states and 426 transitions. [2018-07-25 13:33:33,841 INFO L473 AbstractCegarLoop]: Interpolant automaton has 212 states. [2018-07-25 13:33:33,841 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 426 transitions. [2018-07-25 13:33:33,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-07-25 13:33:33,842 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:33,842 INFO L354 BasicCegarLoop]: trace histogram [106, 105, 105, 104, 1, 1, 1, 1] [2018-07-25 13:33:33,843 INFO L415 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:33,843 INFO L82 PathProgramCache]: Analyzing trace with hash -576555213, now seen corresponding path program 208 times [2018-07-25 13:33:33,843 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:34,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:34,635 INFO L134 CoverageAnalysis]: Checked inductivity of 22050 backedges. 11130 proven. 10920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:34,635 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:34,635 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2018-07-25 13:33:34,635 INFO L451 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-07-25 13:33:34,636 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-07-25 13:33:34,637 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5888, Invalid=6102, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 13:33:34,637 INFO L87 Difference]: Start difference. First operand 425 states and 426 transitions. Second operand 110 states. [2018-07-25 13:33:35,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:35,418 INFO L93 Difference]: Finished difference Result 433 states and 434 transitions. [2018-07-25 13:33:35,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 215 states. [2018-07-25 13:33:35,418 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 424 [2018-07-25 13:33:35,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:35,419 INFO L225 Difference]: With dead ends: 433 [2018-07-25 13:33:35,419 INFO L226 Difference]: Without dead ends: 431 [2018-07-25 13:33:35,421 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11236 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17443, Invalid=28997, Unknown=0, NotChecked=0, Total=46440 [2018-07-25 13:33:35,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2018-07-25 13:33:35,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 427. [2018-07-25 13:33:35,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2018-07-25 13:33:35,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 428 transitions. [2018-07-25 13:33:35,648 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 428 transitions. Word has length 424 [2018-07-25 13:33:35,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:35,648 INFO L472 AbstractCegarLoop]: Abstraction has 427 states and 428 transitions. [2018-07-25 13:33:35,648 INFO L473 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-07-25 13:33:35,648 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 428 transitions. [2018-07-25 13:33:35,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2018-07-25 13:33:35,650 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:35,650 INFO L354 BasicCegarLoop]: trace histogram [106, 106, 105, 105, 1, 1, 1, 1] [2018-07-25 13:33:35,650 INFO L415 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:35,650 INFO L82 PathProgramCache]: Analyzing trace with hash -18845265, now seen corresponding path program 209 times [2018-07-25 13:33:35,650 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:35,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:37,157 INFO L134 CoverageAnalysis]: Checked inductivity of 22260 backedges. 11130 proven. 11130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:37,157 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:37,157 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [213] total 213 [2018-07-25 13:33:37,158 INFO L451 AbstractCegarLoop]: Interpolant automaton has 214 states [2018-07-25 13:33:37,159 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 214 interpolants. [2018-07-25 13:33:37,162 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11555, Invalid=34027, Unknown=0, NotChecked=0, Total=45582 [2018-07-25 13:33:37,163 INFO L87 Difference]: Start difference. First operand 427 states and 428 transitions. Second operand 214 states. [2018-07-25 13:33:40,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:40,450 INFO L93 Difference]: Finished difference Result 644 states and 646 transitions. [2018-07-25 13:33:40,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2018-07-25 13:33:40,450 INFO L78 Accepts]: Start accepts. Automaton has 214 states. Word has length 426 [2018-07-25 13:33:40,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:40,451 INFO L225 Difference]: With dead ends: 644 [2018-07-25 13:33:40,451 INFO L226 Difference]: Without dead ends: 429 [2018-07-25 13:33:40,454 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 318 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16590 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=23109, Invalid=78971, Unknown=0, NotChecked=0, Total=102080 [2018-07-25 13:33:40,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2018-07-25 13:33:40,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2018-07-25 13:33:40,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2018-07-25 13:33:40,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 430 transitions. [2018-07-25 13:33:40,682 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 430 transitions. Word has length 426 [2018-07-25 13:33:40,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:40,682 INFO L472 AbstractCegarLoop]: Abstraction has 429 states and 430 transitions. [2018-07-25 13:33:40,682 INFO L473 AbstractCegarLoop]: Interpolant automaton has 214 states. [2018-07-25 13:33:40,683 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 430 transitions. [2018-07-25 13:33:40,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2018-07-25 13:33:40,684 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:40,684 INFO L354 BasicCegarLoop]: trace histogram [107, 106, 106, 105, 1, 1, 1, 1] [2018-07-25 13:33:40,684 INFO L415 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:40,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1395430423, now seen corresponding path program 210 times [2018-07-25 13:33:40,684 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:41,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:41,512 INFO L134 CoverageAnalysis]: Checked inductivity of 22472 backedges. 11342 proven. 11130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:41,513 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:41,513 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110] total 110 [2018-07-25 13:33:41,513 INFO L451 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-07-25 13:33:41,514 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-07-25 13:33:41,514 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5997, Invalid=6213, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 13:33:41,514 INFO L87 Difference]: Start difference. First operand 429 states and 430 transitions. Second operand 111 states. [2018-07-25 13:33:42,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:42,327 INFO L93 Difference]: Finished difference Result 437 states and 438 transitions. [2018-07-25 13:33:42,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 217 states. [2018-07-25 13:33:42,327 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 428 [2018-07-25 13:33:42,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:42,328 INFO L225 Difference]: With dead ends: 437 [2018-07-25 13:33:42,329 INFO L226 Difference]: Without dead ends: 435 [2018-07-25 13:33:42,333 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11449 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17768, Invalid=29538, Unknown=0, NotChecked=0, Total=47306 [2018-07-25 13:33:42,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2018-07-25 13:33:42,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 431. [2018-07-25 13:33:42,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2018-07-25 13:33:42,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 432 transitions. [2018-07-25 13:33:42,562 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 432 transitions. Word has length 428 [2018-07-25 13:33:42,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:42,563 INFO L472 AbstractCegarLoop]: Abstraction has 431 states and 432 transitions. [2018-07-25 13:33:42,563 INFO L473 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-07-25 13:33:42,563 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 432 transitions. [2018-07-25 13:33:42,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2018-07-25 13:33:42,564 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:42,564 INFO L354 BasicCegarLoop]: trace histogram [107, 107, 106, 106, 1, 1, 1, 1] [2018-07-25 13:33:42,565 INFO L415 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:42,565 INFO L82 PathProgramCache]: Analyzing trace with hash -978906907, now seen corresponding path program 211 times [2018-07-25 13:33:42,565 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:42,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:44,173 INFO L134 CoverageAnalysis]: Checked inductivity of 22684 backedges. 11342 proven. 11342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:44,173 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:44,173 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [215] total 215 [2018-07-25 13:33:44,174 INFO L451 AbstractCegarLoop]: Interpolant automaton has 216 states [2018-07-25 13:33:44,175 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2018-07-25 13:33:44,176 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11771, Invalid=34669, Unknown=0, NotChecked=0, Total=46440 [2018-07-25 13:33:44,176 INFO L87 Difference]: Start difference. First operand 431 states and 432 transitions. Second operand 216 states. Received shutdown request... [2018-07-25 13:33:45,362 WARN L1010 $PredicateComparison]: unable to prove that (and (<= c_ULTIMATE.start_main_~i~5 106) (<= c_ULTIMATE.start_main_~n~5 (+ c_ULTIMATE.start_main_~j~5 36))) is different from false [2018-07-25 13:33:45,366 WARN L1032 $PredicateComparison]: unable to prove that (and (<= c_ULTIMATE.start_main_~i~5 106) (<= c_ULTIMATE.start_main_~n~5 (+ c_ULTIMATE.start_main_~j~5 36))) is different from true [2018-07-25 13:33:45,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2018-07-25 13:33:45,384 WARN L541 AbstractCegarLoop]: Verification canceled [2018-07-25 13:33:45,391 WARN L202 ceAbstractionStarter]: Timeout [2018-07-25 13:33:45,394 INFO L202 PluginConnector]: Adding new model up.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 01:33:45 BoogieIcfgContainer [2018-07-25 13:33:45,394 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 13:33:45,395 INFO L168 Benchmark]: Toolchain (without parser) took 252014.13 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: -905.7 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-07-25 13:33:45,402 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 13:33:45,403 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.28 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 13:33:45,403 INFO L168 Benchmark]: Boogie Preprocessor took 25.80 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 13:33:45,403 INFO L168 Benchmark]: RCFGBuilder took 270.19 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-25 13:33:45,407 INFO L168 Benchmark]: TraceAbstraction took 251667.01 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: -916.3 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-07-25 13:33:45,409 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 46.28 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.80 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 270.19 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 251667.01 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: -916.3 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 66). Cancelled while BasicCegarLoop was constructing difference of abstraction (431states) and interpolant automaton (currently 180 states, 216 states before enhancement), while ReachableStatesComputation was computing reachable states (495 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. TIMEOUT Result, 251.6s OverallTime, 213 OverallIterations, 107 TraceHistogramMax, 142.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6629 SDtfs, 3161 SDslu, 30668 SDs, 0 SdLazy, 402618 SolverSat, 21376 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 18.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34841 GetRequests, 5778 SyntacticMatches, 0 SemanticMatches, 29063 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1020254 ImplicationChecksByTransitivity, 92.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=431occurred in iteration=212, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 18.6s AutomataMinimizationTime, 212 MinimizatonAttempts, 424 StatesRemovedByMinimization, 106 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 18.6s SatisfiabilityAnalysisTime, 59.9s InterpolantComputationTime, 46434 NumberOfCodeBlocks, 46434 NumberOfCodeBlocksAsserted, 213 NumberOfCheckSat, 46221 ConstructedInterpolants, 0 QuantifiedInterpolants, 46377006 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 213 InterpolantComputations, 2 PerfectInterpolantSequences, 816624/1621906 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/up.i_4.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_13-33-45-422.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/up.i_4.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_13-33-45-422.csv Completed graceful shutdown