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/count_by_1.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 08:44:40,316 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 08:44:40,319 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 08:44:40,337 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 08:44:40,337 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 08:44:40,338 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 08:44:40,340 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 08:44:40,343 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 08:44:40,345 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 08:44:40,348 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 08:44:40,350 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 08:44:40,350 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 08:44:40,352 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 08:44:40,353 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 08:44:40,354 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 08:44:40,357 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 08:44:40,359 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 08:44:40,360 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 08:44:40,362 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 08:44:40,364 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 08:44:40,365 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 08:44:40,366 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 08:44:40,369 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 08:44:40,369 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 08:44:40,369 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 08:44:40,370 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 08:44:40,371 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 08:44:40,372 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 08:44:40,373 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 08:44:40,374 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 08:44:40,374 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 08:44:40,375 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-25 08:44:40,377 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-07-25 08:44:40,392 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 08:44:40,393 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 08:44:40,394 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 08:44:40,394 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 08:44:40,394 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 08:44:40,395 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-25 08:44:40,395 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 08:44:40,395 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 08:44:40,471 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 08:44:40,487 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 08:44:40,492 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 08:44:40,494 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 08:44:40,495 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 08:44:40,495 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_by_1.i_3.bpl [2018-07-25 08:44:40,496 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_by_1.i_3.bpl' [2018-07-25 08:44:40,555 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 08:44:40,557 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 08:44:40,558 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 08:44:40,558 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 08:44:40,558 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 08:44:40,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "count_by_1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:44:40" (1/1) ... [2018-07-25 08:44:40,593 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "count_by_1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:44:40" (1/1) ... [2018-07-25 08:44:40,601 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 08:44:40,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 08:44:40,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 08:44:40,603 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 08:44:40,616 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "count_by_1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:44:40" (1/1) ... [2018-07-25 08:44:40,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "count_by_1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:44:40" (1/1) ... [2018-07-25 08:44:40,617 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "count_by_1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:44:40" (1/1) ... [2018-07-25 08:44:40,617 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "count_by_1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:44:40" (1/1) ... [2018-07-25 08:44:40,622 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "count_by_1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:44:40" (1/1) ... [2018-07-25 08:44:40,624 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "count_by_1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:44:40" (1/1) ... [2018-07-25 08:44:40,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "count_by_1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:44:40" (1/1) ... [2018-07-25 08:44:40,627 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 08:44:40,628 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 08:44:40,628 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 08:44:40,628 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 08:44:40,630 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "count_by_1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:44:40" (1/1) ... [2018-07-25 08:44:40,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-25 08:44:40,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-25 08:44:40,828 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-25 08:44:40,828 INFO L202 PluginConnector]: Adding new model count_by_1.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:44:40 BoogieIcfgContainer [2018-07-25 08:44:40,829 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 08:44:40,829 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 08:44:40,830 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 08:44:40,835 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 08:44:40,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_by_1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:44:40" (1/2) ... [2018-07-25 08:44:40,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3be63ae1 and model type count_by_1.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 08:44:40, skipping insertion in model container [2018-07-25 08:44:40,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_by_1.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:44:40" (2/2) ... [2018-07-25 08:44:40,840 INFO L112 eAbstractionObserver]: Analyzing ICFG count_by_1.i_3.bpl [2018-07-25 08:44:40,852 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-25 08:44:40,861 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 08:44:40,911 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 08:44:40,912 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 08:44:40,912 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 08:44:40,913 INFO L376 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-25 08:44:40,913 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 08:44:40,913 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 08:44:40,914 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 08:44:40,914 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 08:44:40,914 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 08:44:40,930 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-07-25 08:44:40,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-25 08:44:40,938 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:40,939 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-25 08:44:40,940 INFO L415 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:40,945 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, now seen corresponding path program 1 times [2018-07-25 08:44:40,952 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:40,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:41,014 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 08:44:41,016 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:44:41,017 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-25 08:44:41,021 INFO L451 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-25 08:44:41,032 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-25 08:44:41,033 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-25 08:44:41,035 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-07-25 08:44:41,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:41,057 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2018-07-25 08:44:41,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-25 08:44:41,059 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-07-25 08:44:41,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:41,069 INFO L225 Difference]: With dead ends: 10 [2018-07-25 08:44:41,069 INFO L226 Difference]: Without dead ends: 7 [2018-07-25 08:44:41,073 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-25 08:44:41,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-07-25 08:44:41,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-07-25 08:44:41,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-07-25 08:44:41,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-07-25 08:44:41,120 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-07-25 08:44:41,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:41,121 INFO L472 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-07-25 08:44:41,121 INFO L473 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-25 08:44:41,121 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-07-25 08:44:41,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-25 08:44:41,122 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:41,122 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-07-25 08:44:41,123 INFO L415 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:41,124 INFO L82 PathProgramCache]: Analyzing trace with hash 889591169, now seen corresponding path program 1 times [2018-07-25 08:44:41,124 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:41,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:41,145 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:41,145 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:41,145 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-25 08:44:41,147 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 08:44:41,147 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 08:44:41,148 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:44:41,148 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 4 states. [2018-07-25 08:44:41,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:41,169 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-07-25 08:44:41,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 08:44:41,170 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-07-25 08:44:41,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:41,173 INFO L225 Difference]: With dead ends: 11 [2018-07-25 08:44:41,173 INFO L226 Difference]: Without dead ends: 9 [2018-07-25 08:44:41,174 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:44:41,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-07-25 08:44:41,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-07-25 08:44:41,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-25 08:44:41,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-07-25 08:44:41,179 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2018-07-25 08:44:41,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:41,179 INFO L472 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-07-25 08:44:41,179 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 08:44:41,180 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-07-25 08:44:41,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-25 08:44:41,180 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:41,181 INFO L354 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2018-07-25 08:44:41,181 INFO L415 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:41,181 INFO L82 PathProgramCache]: Analyzing trace with hash 198673595, now seen corresponding path program 2 times [2018-07-25 08:44:41,182 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:41,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:41,218 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:41,219 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:41,219 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-25 08:44:41,219 INFO L451 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-25 08:44:41,220 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-25 08:44:41,220 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:44:41,220 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-07-25 08:44:41,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:41,242 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-07-25 08:44:41,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-25 08:44:41,242 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2018-07-25 08:44:41,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:41,243 INFO L225 Difference]: With dead ends: 13 [2018-07-25 08:44:41,243 INFO L226 Difference]: Without dead ends: 11 [2018-07-25 08:44:41,244 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:44:41,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-07-25 08:44:41,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-07-25 08:44:41,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-07-25 08:44:41,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-07-25 08:44:41,248 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-07-25 08:44:41,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:41,248 INFO L472 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-07-25 08:44:41,248 INFO L473 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-25 08:44:41,249 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-07-25 08:44:41,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-25 08:44:41,249 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:41,249 INFO L354 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1] [2018-07-25 08:44:41,250 INFO L415 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:41,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1946815861, now seen corresponding path program 3 times [2018-07-25 08:44:41,250 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:41,293 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:41,294 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:41,294 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 08:44:41,294 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 08:44:41,295 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 08:44:41,295 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:44:41,295 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 6 states. [2018-07-25 08:44:41,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:41,314 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-07-25 08:44:41,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 08:44:41,315 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2018-07-25 08:44:41,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:41,316 INFO L225 Difference]: With dead ends: 15 [2018-07-25 08:44:41,316 INFO L226 Difference]: Without dead ends: 13 [2018-07-25 08:44:41,316 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:44:41,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-07-25 08:44:41,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-07-25 08:44:41,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-07-25 08:44:41,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-07-25 08:44:41,320 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-07-25 08:44:41,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:41,321 INFO L472 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-07-25 08:44:41,321 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 08:44:41,321 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-07-25 08:44:41,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-25 08:44:41,322 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:41,322 INFO L354 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1] [2018-07-25 08:44:41,322 INFO L415 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:41,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1715646545, now seen corresponding path program 4 times [2018-07-25 08:44:41,323 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:41,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:41,358 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:41,358 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:41,358 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 08:44:41,359 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 08:44:41,359 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 08:44:41,359 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:44:41,360 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 7 states. [2018-07-25 08:44:41,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:41,380 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-07-25 08:44:41,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-25 08:44:41,381 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2018-07-25 08:44:41,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:41,382 INFO L225 Difference]: With dead ends: 17 [2018-07-25 08:44:41,382 INFO L226 Difference]: Without dead ends: 15 [2018-07-25 08:44:41,383 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:44:41,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-07-25 08:44:41,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-07-25 08:44:41,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-07-25 08:44:41,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-07-25 08:44:41,390 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-07-25 08:44:41,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:41,390 INFO L472 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-07-25 08:44:41,390 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 08:44:41,390 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-07-25 08:44:41,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-25 08:44:41,392 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:41,392 INFO L354 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1] [2018-07-25 08:44:41,394 INFO L415 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:41,394 INFO L82 PathProgramCache]: Analyzing trace with hash 531164009, now seen corresponding path program 5 times [2018-07-25 08:44:41,394 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:41,461 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:41,461 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:41,462 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:44:41,462 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:44:41,462 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:44:41,462 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:44:41,463 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 8 states. [2018-07-25 08:44:41,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:41,490 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-07-25 08:44:41,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-25 08:44:41,491 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-07-25 08:44:41,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:41,494 INFO L225 Difference]: With dead ends: 19 [2018-07-25 08:44:41,495 INFO L226 Difference]: Without dead ends: 17 [2018-07-25 08:44:41,496 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:44:41,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-07-25 08:44:41,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-07-25 08:44:41,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-07-25 08:44:41,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-07-25 08:44:41,504 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2018-07-25 08:44:41,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:41,504 INFO L472 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-07-25 08:44:41,504 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:44:41,504 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-07-25 08:44:41,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-25 08:44:41,505 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:41,505 INFO L354 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1] [2018-07-25 08:44:41,505 INFO L415 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:41,506 INFO L82 PathProgramCache]: Analyzing trace with hash -652443485, now seen corresponding path program 6 times [2018-07-25 08:44:41,506 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:41,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:41,548 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:41,548 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:41,548 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:44:41,549 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:44:41,549 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:44:41,549 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:44:41,550 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 9 states. [2018-07-25 08:44:41,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:41,565 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-07-25 08:44:41,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-25 08:44:41,566 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-07-25 08:44:41,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:41,567 INFO L225 Difference]: With dead ends: 21 [2018-07-25 08:44:41,567 INFO L226 Difference]: Without dead ends: 19 [2018-07-25 08:44:41,568 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:44:41,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-07-25 08:44:41,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-07-25 08:44:41,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-07-25 08:44:41,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-07-25 08:44:41,572 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2018-07-25 08:44:41,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:41,572 INFO L472 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-07-25 08:44:41,573 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:44:41,573 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-07-25 08:44:41,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 08:44:41,576 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:41,576 INFO L354 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1] [2018-07-25 08:44:41,576 INFO L415 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:41,576 INFO L82 PathProgramCache]: Analyzing trace with hash 67088221, now seen corresponding path program 7 times [2018-07-25 08:44:41,577 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:41,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:41,667 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:41,668 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:41,668 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:44:41,668 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 08:44:41,669 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 08:44:41,669 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:44:41,669 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 10 states. [2018-07-25 08:44:41,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:41,685 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-07-25 08:44:41,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-25 08:44:41,686 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2018-07-25 08:44:41,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:41,687 INFO L225 Difference]: With dead ends: 23 [2018-07-25 08:44:41,687 INFO L226 Difference]: Without dead ends: 21 [2018-07-25 08:44:41,687 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:44:41,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-07-25 08:44:41,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-07-25 08:44:41,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-07-25 08:44:41,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-07-25 08:44:41,696 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2018-07-25 08:44:41,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:41,696 INFO L472 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-07-25 08:44:41,696 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 08:44:41,697 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-07-25 08:44:41,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-25 08:44:41,697 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:41,698 INFO L354 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1] [2018-07-25 08:44:41,698 INFO L415 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:41,698 INFO L82 PathProgramCache]: Analyzing trace with hash 47323031, now seen corresponding path program 8 times [2018-07-25 08:44:41,698 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:41,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:41,739 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:41,740 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:41,740 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 08:44:41,740 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:44:41,741 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:44:41,741 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:44:41,741 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 11 states. [2018-07-25 08:44:41,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:41,760 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-07-25 08:44:41,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 08:44:41,761 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2018-07-25 08:44:41,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:41,762 INFO L225 Difference]: With dead ends: 25 [2018-07-25 08:44:41,762 INFO L226 Difference]: Without dead ends: 23 [2018-07-25 08:44:41,762 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:44:41,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-07-25 08:44:41,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-07-25 08:44:41,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-07-25 08:44:41,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-07-25 08:44:41,768 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 20 [2018-07-25 08:44:41,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:41,768 INFO L472 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-07-25 08:44:41,768 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 08:44:41,768 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-07-25 08:44:41,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-25 08:44:41,769 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:41,769 INFO L354 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1] [2018-07-25 08:44:41,770 INFO L415 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:41,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1767155375, now seen corresponding path program 9 times [2018-07-25 08:44:41,770 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:41,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:41,815 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:41,816 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:41,816 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 08:44:41,817 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 08:44:41,817 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 08:44:41,817 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:44:41,820 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 12 states. [2018-07-25 08:44:41,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:41,849 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-07-25 08:44:41,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-25 08:44:41,850 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2018-07-25 08:44:41,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:41,851 INFO L225 Difference]: With dead ends: 27 [2018-07-25 08:44:41,851 INFO L226 Difference]: Without dead ends: 25 [2018-07-25 08:44:41,852 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:44:41,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-07-25 08:44:41,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-07-25 08:44:41,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-07-25 08:44:41,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-07-25 08:44:41,867 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2018-07-25 08:44:41,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:41,867 INFO L472 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-07-25 08:44:41,867 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 08:44:41,868 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-07-25 08:44:41,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-25 08:44:41,868 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:41,869 INFO L354 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1] [2018-07-25 08:44:41,869 INFO L415 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:41,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1724181365, now seen corresponding path program 10 times [2018-07-25 08:44:41,869 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:41,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:41,961 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:41,962 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:41,962 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-07-25 08:44:41,963 INFO L451 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-25 08:44:41,963 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-25 08:44:41,964 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-07-25 08:44:41,964 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 13 states. [2018-07-25 08:44:41,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:41,988 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-07-25 08:44:41,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 08:44:41,988 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 24 [2018-07-25 08:44:41,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:41,989 INFO L225 Difference]: With dead ends: 29 [2018-07-25 08:44:41,990 INFO L226 Difference]: Without dead ends: 27 [2018-07-25 08:44:41,990 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-07-25 08:44:41,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-07-25 08:44:41,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-07-25 08:44:41,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-07-25 08:44:42,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-07-25 08:44:42,003 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 24 [2018-07-25 08:44:42,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:42,004 INFO L472 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-07-25 08:44:42,004 INFO L473 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-25 08:44:42,004 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-07-25 08:44:42,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-25 08:44:42,005 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:42,005 INFO L354 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1] [2018-07-25 08:44:42,006 INFO L415 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:42,006 INFO L82 PathProgramCache]: Analyzing trace with hash 919136581, now seen corresponding path program 11 times [2018-07-25 08:44:42,006 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:42,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:42,076 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:42,076 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:42,077 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-07-25 08:44:42,077 INFO L451 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-25 08:44:42,080 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-25 08:44:42,081 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:44:42,081 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 14 states. [2018-07-25 08:44:42,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:42,104 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-07-25 08:44:42,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-25 08:44:42,104 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 26 [2018-07-25 08:44:42,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:42,105 INFO L225 Difference]: With dead ends: 31 [2018-07-25 08:44:42,106 INFO L226 Difference]: Without dead ends: 29 [2018-07-25 08:44:42,106 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:44:42,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-07-25 08:44:42,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-07-25 08:44:42,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-07-25 08:44:42,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-07-25 08:44:42,120 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 26 [2018-07-25 08:44:42,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:42,121 INFO L472 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-07-25 08:44:42,121 INFO L473 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-25 08:44:42,121 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-07-25 08:44:42,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-07-25 08:44:42,125 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:42,125 INFO L354 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1] [2018-07-25 08:44:42,126 INFO L415 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:42,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1472956545, now seen corresponding path program 12 times [2018-07-25 08:44:42,127 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:42,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:42,181 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:42,181 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:42,182 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-07-25 08:44:42,183 INFO L451 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-25 08:44:42,183 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-25 08:44:42,187 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-07-25 08:44:42,187 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 15 states. [2018-07-25 08:44:42,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:42,218 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-07-25 08:44:42,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-25 08:44:42,219 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 28 [2018-07-25 08:44:42,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:42,220 INFO L225 Difference]: With dead ends: 33 [2018-07-25 08:44:42,220 INFO L226 Difference]: Without dead ends: 31 [2018-07-25 08:44:42,221 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-07-25 08:44:42,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-07-25 08:44:42,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-07-25 08:44:42,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-07-25 08:44:42,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-07-25 08:44:42,235 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 28 [2018-07-25 08:44:42,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:42,235 INFO L472 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-07-25 08:44:42,235 INFO L473 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-25 08:44:42,235 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-07-25 08:44:42,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-07-25 08:44:42,236 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:42,236 INFO L354 BasicCegarLoop]: trace histogram [14, 13, 1, 1, 1] [2018-07-25 08:44:42,237 INFO L415 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:42,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1828020025, now seen corresponding path program 13 times [2018-07-25 08:44:42,237 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:42,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:42,294 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:42,295 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:42,295 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-25 08:44:42,296 INFO L451 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-25 08:44:42,296 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-25 08:44:42,296 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-07-25 08:44:42,297 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 16 states. [2018-07-25 08:44:42,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:42,326 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-07-25 08:44:42,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 08:44:42,327 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 30 [2018-07-25 08:44:42,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:42,328 INFO L225 Difference]: With dead ends: 35 [2018-07-25 08:44:42,328 INFO L226 Difference]: Without dead ends: 33 [2018-07-25 08:44:42,329 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-07-25 08:44:42,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-07-25 08:44:42,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-07-25 08:44:42,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-07-25 08:44:42,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-07-25 08:44:42,340 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 30 [2018-07-25 08:44:42,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:42,341 INFO L472 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-07-25 08:44:42,341 INFO L473 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-25 08:44:42,341 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-07-25 08:44:42,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-07-25 08:44:42,342 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:42,342 INFO L354 BasicCegarLoop]: trace histogram [15, 14, 1, 1, 1] [2018-07-25 08:44:42,344 INFO L415 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:42,344 INFO L82 PathProgramCache]: Analyzing trace with hash 85672051, now seen corresponding path program 14 times [2018-07-25 08:44:42,344 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:42,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:42,406 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:42,406 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:42,406 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-07-25 08:44:42,407 INFO L451 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-25 08:44:42,407 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-25 08:44:42,408 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-07-25 08:44:42,408 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 17 states. [2018-07-25 08:44:42,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:42,434 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-07-25 08:44:42,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-25 08:44:42,435 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 32 [2018-07-25 08:44:42,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:42,435 INFO L225 Difference]: With dead ends: 37 [2018-07-25 08:44:42,436 INFO L226 Difference]: Without dead ends: 35 [2018-07-25 08:44:42,439 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-07-25 08:44:42,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-07-25 08:44:42,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-07-25 08:44:42,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-07-25 08:44:42,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-07-25 08:44:42,450 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 32 [2018-07-25 08:44:42,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:42,451 INFO L472 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-07-25 08:44:42,451 INFO L473 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-25 08:44:42,451 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-07-25 08:44:42,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-07-25 08:44:42,452 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:42,454 INFO L354 BasicCegarLoop]: trace histogram [16, 15, 1, 1, 1] [2018-07-25 08:44:42,455 INFO L415 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:42,455 INFO L82 PathProgramCache]: Analyzing trace with hash 726514477, now seen corresponding path program 15 times [2018-07-25 08:44:42,455 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:42,518 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:42,518 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:42,519 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-07-25 08:44:42,519 INFO L451 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-25 08:44:42,520 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-25 08:44:42,520 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-07-25 08:44:42,523 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 18 states. [2018-07-25 08:44:42,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:42,547 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-07-25 08:44:42,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 08:44:42,548 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 34 [2018-07-25 08:44:42,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:42,548 INFO L225 Difference]: With dead ends: 39 [2018-07-25 08:44:42,548 INFO L226 Difference]: Without dead ends: 37 [2018-07-25 08:44:42,549 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-07-25 08:44:42,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-07-25 08:44:42,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-07-25 08:44:42,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-07-25 08:44:42,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-07-25 08:44:42,556 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 34 [2018-07-25 08:44:42,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:42,556 INFO L472 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-07-25 08:44:42,556 INFO L473 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-25 08:44:42,557 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-07-25 08:44:42,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-07-25 08:44:42,558 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:42,558 INFO L354 BasicCegarLoop]: trace histogram [17, 16, 1, 1, 1] [2018-07-25 08:44:42,559 INFO L415 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:42,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1899204761, now seen corresponding path program 16 times [2018-07-25 08:44:42,559 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:42,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:42,630 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:42,631 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:42,631 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-07-25 08:44:42,632 INFO L451 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-25 08:44:42,632 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-25 08:44:42,632 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-07-25 08:44:42,633 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 19 states. [2018-07-25 08:44:42,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:42,651 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-07-25 08:44:42,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-25 08:44:42,651 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 36 [2018-07-25 08:44:42,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:42,652 INFO L225 Difference]: With dead ends: 41 [2018-07-25 08:44:42,652 INFO L226 Difference]: Without dead ends: 39 [2018-07-25 08:44:42,660 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-07-25 08:44:42,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-07-25 08:44:42,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-07-25 08:44:42,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-07-25 08:44:42,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-07-25 08:44:42,667 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 36 [2018-07-25 08:44:42,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:42,667 INFO L472 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-07-25 08:44:42,668 INFO L473 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-25 08:44:42,668 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-07-25 08:44:42,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-07-25 08:44:42,670 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:42,670 INFO L354 BasicCegarLoop]: trace histogram [18, 17, 1, 1, 1] [2018-07-25 08:44:42,671 INFO L415 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:42,671 INFO L82 PathProgramCache]: Analyzing trace with hash 225377569, now seen corresponding path program 17 times [2018-07-25 08:44:42,671 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:42,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:42,763 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:42,763 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:42,764 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-25 08:44:42,764 INFO L451 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-25 08:44:42,764 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-25 08:44:42,765 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:44:42,765 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 20 states. [2018-07-25 08:44:42,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:42,786 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-07-25 08:44:42,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 08:44:42,786 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 38 [2018-07-25 08:44:42,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:42,787 INFO L225 Difference]: With dead ends: 43 [2018-07-25 08:44:42,787 INFO L226 Difference]: Without dead ends: 41 [2018-07-25 08:44:42,795 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:44:42,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-07-25 08:44:42,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-07-25 08:44:42,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-07-25 08:44:42,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-07-25 08:44:42,802 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 38 [2018-07-25 08:44:42,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:42,802 INFO L472 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-07-25 08:44:42,802 INFO L473 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-25 08:44:42,802 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-07-25 08:44:42,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-07-25 08:44:42,803 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:42,803 INFO L354 BasicCegarLoop]: trace histogram [19, 18, 1, 1, 1] [2018-07-25 08:44:42,804 INFO L415 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:42,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1839531099, now seen corresponding path program 18 times [2018-07-25 08:44:42,804 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:42,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:42,892 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:42,892 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:42,892 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-07-25 08:44:42,893 INFO L451 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-07-25 08:44:42,893 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-07-25 08:44:42,894 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-07-25 08:44:42,894 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 21 states. [2018-07-25 08:44:42,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:42,920 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-07-25 08:44:42,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-25 08:44:42,921 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 40 [2018-07-25 08:44:42,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:42,922 INFO L225 Difference]: With dead ends: 45 [2018-07-25 08:44:42,922 INFO L226 Difference]: Without dead ends: 43 [2018-07-25 08:44:42,923 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-07-25 08:44:42,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-07-25 08:44:42,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-07-25 08:44:42,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-07-25 08:44:42,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-07-25 08:44:42,930 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 40 [2018-07-25 08:44:42,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:42,931 INFO L472 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-07-25 08:44:42,931 INFO L473 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-07-25 08:44:42,931 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-07-25 08:44:42,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-07-25 08:44:42,932 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:42,932 INFO L354 BasicCegarLoop]: trace histogram [20, 19, 1, 1, 1] [2018-07-25 08:44:42,933 INFO L415 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:42,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1737087723, now seen corresponding path program 19 times [2018-07-25 08:44:42,934 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:42,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:43,008 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:43,009 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:43,009 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-07-25 08:44:43,010 INFO L451 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-25 08:44:43,010 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-25 08:44:43,010 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:44:43,011 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 22 states. [2018-07-25 08:44:43,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:43,028 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-07-25 08:44:43,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 08:44:43,029 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 42 [2018-07-25 08:44:43,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:43,029 INFO L225 Difference]: With dead ends: 47 [2018-07-25 08:44:43,029 INFO L226 Difference]: Without dead ends: 45 [2018-07-25 08:44:43,030 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:44:43,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-07-25 08:44:43,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-07-25 08:44:43,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-07-25 08:44:43,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-07-25 08:44:43,039 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 42 [2018-07-25 08:44:43,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:43,040 INFO L472 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-07-25 08:44:43,040 INFO L473 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-25 08:44:43,040 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-07-25 08:44:43,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-07-25 08:44:43,044 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:43,044 INFO L354 BasicCegarLoop]: trace histogram [21, 20, 1, 1, 1] [2018-07-25 08:44:43,044 INFO L415 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:43,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1401028431, now seen corresponding path program 20 times [2018-07-25 08:44:43,045 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:43,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:43,132 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:43,132 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:43,133 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-07-25 08:44:43,133 INFO L451 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-07-25 08:44:43,134 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-07-25 08:44:43,134 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-07-25 08:44:43,136 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 23 states. [2018-07-25 08:44:43,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:43,156 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-07-25 08:44:43,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-25 08:44:43,156 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 44 [2018-07-25 08:44:43,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:43,157 INFO L225 Difference]: With dead ends: 49 [2018-07-25 08:44:43,157 INFO L226 Difference]: Without dead ends: 47 [2018-07-25 08:44:43,158 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-07-25 08:44:43,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-07-25 08:44:43,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-07-25 08:44:43,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-07-25 08:44:43,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-07-25 08:44:43,168 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 44 [2018-07-25 08:44:43,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:43,168 INFO L472 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-07-25 08:44:43,168 INFO L473 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-07-25 08:44:43,169 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-07-25 08:44:43,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-07-25 08:44:43,169 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:43,169 INFO L354 BasicCegarLoop]: trace histogram [22, 21, 1, 1, 1] [2018-07-25 08:44:43,170 INFO L415 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:43,170 INFO L82 PathProgramCache]: Analyzing trace with hash 2063610633, now seen corresponding path program 21 times [2018-07-25 08:44:43,172 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:43,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:43,269 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:43,269 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:43,270 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-25 08:44:43,270 INFO L451 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-25 08:44:43,271 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-25 08:44:43,272 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:44:43,272 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 24 states. [2018-07-25 08:44:43,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:43,295 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-07-25 08:44:43,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-25 08:44:43,295 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 46 [2018-07-25 08:44:43,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:43,296 INFO L225 Difference]: With dead ends: 51 [2018-07-25 08:44:43,300 INFO L226 Difference]: Without dead ends: 49 [2018-07-25 08:44:43,301 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:44:43,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-07-25 08:44:43,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-07-25 08:44:43,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-07-25 08:44:43,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-07-25 08:44:43,311 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 46 [2018-07-25 08:44:43,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:43,312 INFO L472 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-07-25 08:44:43,312 INFO L473 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-25 08:44:43,312 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-07-25 08:44:43,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-07-25 08:44:43,313 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:43,313 INFO L354 BasicCegarLoop]: trace histogram [23, 22, 1, 1, 1] [2018-07-25 08:44:43,314 INFO L415 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:43,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1145020349, now seen corresponding path program 22 times [2018-07-25 08:44:43,315 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:43,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:43,428 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:43,428 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:43,429 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-07-25 08:44:43,429 INFO L451 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-07-25 08:44:43,429 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-07-25 08:44:43,430 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:44:43,431 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 25 states. [2018-07-25 08:44:43,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:43,456 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-07-25 08:44:43,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-07-25 08:44:43,456 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 48 [2018-07-25 08:44:43,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:43,457 INFO L225 Difference]: With dead ends: 53 [2018-07-25 08:44:43,457 INFO L226 Difference]: Without dead ends: 51 [2018-07-25 08:44:43,458 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:44:43,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-07-25 08:44:43,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-07-25 08:44:43,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-07-25 08:44:43,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-07-25 08:44:43,468 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 48 [2018-07-25 08:44:43,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:43,468 INFO L472 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-07-25 08:44:43,468 INFO L473 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-07-25 08:44:43,469 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-07-25 08:44:43,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-07-25 08:44:43,469 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:43,469 INFO L354 BasicCegarLoop]: trace histogram [24, 23, 1, 1, 1] [2018-07-25 08:44:43,470 INFO L415 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:43,470 INFO L82 PathProgramCache]: Analyzing trace with hash -852875523, now seen corresponding path program 23 times [2018-07-25 08:44:43,470 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:43,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:43,575 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:43,575 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:43,576 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-07-25 08:44:43,576 INFO L451 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-25 08:44:43,576 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-25 08:44:43,577 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:44:43,577 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 26 states. [2018-07-25 08:44:43,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:43,599 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-07-25 08:44:43,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-25 08:44:43,600 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 50 [2018-07-25 08:44:43,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:43,601 INFO L225 Difference]: With dead ends: 55 [2018-07-25 08:44:43,601 INFO L226 Difference]: Without dead ends: 53 [2018-07-25 08:44:43,602 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:44:43,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-07-25 08:44:43,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-07-25 08:44:43,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-07-25 08:44:43,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-07-25 08:44:43,608 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 50 [2018-07-25 08:44:43,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:43,609 INFO L472 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-07-25 08:44:43,609 INFO L473 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-07-25 08:44:43,609 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-07-25 08:44:43,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-07-25 08:44:43,610 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:43,610 INFO L354 BasicCegarLoop]: trace histogram [25, 24, 1, 1, 1] [2018-07-25 08:44:43,610 INFO L415 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:43,611 INFO L82 PathProgramCache]: Analyzing trace with hash 725428023, now seen corresponding path program 24 times [2018-07-25 08:44:43,611 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:43,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:43,730 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:43,730 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:43,731 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-07-25 08:44:43,731 INFO L451 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-07-25 08:44:43,731 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-07-25 08:44:43,732 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-07-25 08:44:43,732 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 27 states. [2018-07-25 08:44:43,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:43,753 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-07-25 08:44:43,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-07-25 08:44:43,754 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 52 [2018-07-25 08:44:43,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:43,755 INFO L225 Difference]: With dead ends: 57 [2018-07-25 08:44:43,755 INFO L226 Difference]: Without dead ends: 55 [2018-07-25 08:44:43,756 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-07-25 08:44:43,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-07-25 08:44:43,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-07-25 08:44:43,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-07-25 08:44:43,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-07-25 08:44:43,767 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 52 [2018-07-25 08:44:43,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:43,767 INFO L472 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-07-25 08:44:43,767 INFO L473 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-07-25 08:44:43,770 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-07-25 08:44:43,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-07-25 08:44:43,771 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:43,771 INFO L354 BasicCegarLoop]: trace histogram [26, 25, 1, 1, 1] [2018-07-25 08:44:43,771 INFO L415 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:43,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1351680241, now seen corresponding path program 25 times [2018-07-25 08:44:43,772 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:43,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:43,903 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:43,904 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:43,904 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-25 08:44:43,904 INFO L451 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-25 08:44:43,905 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-25 08:44:43,905 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:44:43,906 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 28 states. [2018-07-25 08:44:43,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:43,932 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-07-25 08:44:43,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-25 08:44:43,933 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 54 [2018-07-25 08:44:43,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:43,933 INFO L225 Difference]: With dead ends: 59 [2018-07-25 08:44:43,934 INFO L226 Difference]: Without dead ends: 57 [2018-07-25 08:44:43,935 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:44:43,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-07-25 08:44:43,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-07-25 08:44:43,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-07-25 08:44:43,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-07-25 08:44:43,942 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 54 [2018-07-25 08:44:43,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:43,943 INFO L472 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-07-25 08:44:43,943 INFO L473 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-25 08:44:43,943 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-07-25 08:44:43,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-07-25 08:44:43,944 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:43,944 INFO L354 BasicCegarLoop]: trace histogram [27, 26, 1, 1, 1] [2018-07-25 08:44:43,944 INFO L415 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:43,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1884640299, now seen corresponding path program 26 times [2018-07-25 08:44:43,945 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:43,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:44,069 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:44,070 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:44,070 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-07-25 08:44:44,070 INFO L451 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-07-25 08:44:44,071 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-07-25 08:44:44,071 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:44:44,072 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 29 states. [2018-07-25 08:44:44,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:44,095 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-07-25 08:44:44,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-25 08:44:44,095 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 56 [2018-07-25 08:44:44,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:44,096 INFO L225 Difference]: With dead ends: 61 [2018-07-25 08:44:44,096 INFO L226 Difference]: Without dead ends: 59 [2018-07-25 08:44:44,097 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:44:44,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-07-25 08:44:44,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-07-25 08:44:44,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-07-25 08:44:44,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-07-25 08:44:44,102 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 56 [2018-07-25 08:44:44,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:44,103 INFO L472 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-07-25 08:44:44,103 INFO L473 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-07-25 08:44:44,103 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-07-25 08:44:44,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-07-25 08:44:44,105 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:44,105 INFO L354 BasicCegarLoop]: trace histogram [28, 27, 1, 1, 1] [2018-07-25 08:44:44,105 INFO L415 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:44,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1336819483, now seen corresponding path program 27 times [2018-07-25 08:44:44,106 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:44,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:44,233 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:44,234 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:44,234 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-07-25 08:44:44,235 INFO L451 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-07-25 08:44:44,235 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-07-25 08:44:44,236 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:44:44,236 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 30 states. [2018-07-25 08:44:44,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:44,258 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-07-25 08:44:44,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-25 08:44:44,258 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 58 [2018-07-25 08:44:44,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:44,259 INFO L225 Difference]: With dead ends: 63 [2018-07-25 08:44:44,260 INFO L226 Difference]: Without dead ends: 61 [2018-07-25 08:44:44,261 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:44:44,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-07-25 08:44:44,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-07-25 08:44:44,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-07-25 08:44:44,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-07-25 08:44:44,265 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 58 [2018-07-25 08:44:44,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:44,266 INFO L472 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-07-25 08:44:44,266 INFO L473 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-07-25 08:44:44,266 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-07-25 08:44:44,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-07-25 08:44:44,268 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:44,268 INFO L354 BasicCegarLoop]: trace histogram [29, 28, 1, 1, 1] [2018-07-25 08:44:44,268 INFO L415 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:44,269 INFO L82 PathProgramCache]: Analyzing trace with hash -488249569, now seen corresponding path program 28 times [2018-07-25 08:44:44,269 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:44,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:44,397 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:44,398 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:44,398 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-07-25 08:44:44,398 INFO L451 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-07-25 08:44:44,399 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-07-25 08:44:44,399 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-07-25 08:44:44,400 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 31 states. [2018-07-25 08:44:44,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:44,417 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-07-25 08:44:44,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-07-25 08:44:44,418 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 60 [2018-07-25 08:44:44,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:44,418 INFO L225 Difference]: With dead ends: 65 [2018-07-25 08:44:44,419 INFO L226 Difference]: Without dead ends: 63 [2018-07-25 08:44:44,420 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-07-25 08:44:44,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-07-25 08:44:44,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-07-25 08:44:44,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-07-25 08:44:44,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-07-25 08:44:44,425 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 60 [2018-07-25 08:44:44,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:44,425 INFO L472 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-07-25 08:44:44,425 INFO L473 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-07-25 08:44:44,425 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-07-25 08:44:44,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-07-25 08:44:44,426 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:44,426 INFO L354 BasicCegarLoop]: trace histogram [30, 29, 1, 1, 1] [2018-07-25 08:44:44,426 INFO L415 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:44,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1056348455, now seen corresponding path program 29 times [2018-07-25 08:44:44,427 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:44,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:44,562 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:44,563 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:44,563 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-25 08:44:44,564 INFO L451 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-25 08:44:44,564 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-25 08:44:44,565 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:44:44,565 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 32 states. [2018-07-25 08:44:44,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:44,587 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-07-25 08:44:44,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-07-25 08:44:44,588 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 62 [2018-07-25 08:44:44,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:44,589 INFO L225 Difference]: With dead ends: 67 [2018-07-25 08:44:44,589 INFO L226 Difference]: Without dead ends: 65 [2018-07-25 08:44:44,590 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:44:44,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-07-25 08:44:44,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-07-25 08:44:44,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-07-25 08:44:44,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-07-25 08:44:44,595 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 62 [2018-07-25 08:44:44,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:44,595 INFO L472 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-07-25 08:44:44,595 INFO L473 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-25 08:44:44,596 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-07-25 08:44:44,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-07-25 08:44:44,596 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:44,597 INFO L354 BasicCegarLoop]: trace histogram [31, 30, 1, 1, 1] [2018-07-25 08:44:44,597 INFO L415 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:44,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1538531309, now seen corresponding path program 30 times [2018-07-25 08:44:44,597 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:44,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:44,784 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:44,784 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:44,785 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-07-25 08:44:44,785 INFO L451 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-07-25 08:44:44,785 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-07-25 08:44:44,786 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 08:44:44,786 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 33 states. [2018-07-25 08:44:44,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:44,803 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-07-25 08:44:44,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-25 08:44:44,804 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 64 [2018-07-25 08:44:44,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:44,804 INFO L225 Difference]: With dead ends: 69 [2018-07-25 08:44:44,804 INFO L226 Difference]: Without dead ends: 67 [2018-07-25 08:44:44,806 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 08:44:44,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-07-25 08:44:44,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-07-25 08:44:44,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-07-25 08:44:44,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-07-25 08:44:44,809 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 64 [2018-07-25 08:44:44,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:44,809 INFO L472 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-07-25 08:44:44,809 INFO L473 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-07-25 08:44:44,809 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-07-25 08:44:44,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-07-25 08:44:44,810 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:44,810 INFO L354 BasicCegarLoop]: trace histogram [32, 31, 1, 1, 1] [2018-07-25 08:44:44,810 INFO L415 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:44,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1059786035, now seen corresponding path program 31 times [2018-07-25 08:44:44,810 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:44,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:44,932 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:44,932 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:44,932 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-07-25 08:44:44,932 INFO L451 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-07-25 08:44:44,933 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-07-25 08:44:44,933 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:44:44,934 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 34 states. [2018-07-25 08:44:44,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:44,951 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-07-25 08:44:44,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-25 08:44:44,951 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 66 [2018-07-25 08:44:44,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:44,952 INFO L225 Difference]: With dead ends: 71 [2018-07-25 08:44:44,952 INFO L226 Difference]: Without dead ends: 69 [2018-07-25 08:44:44,953 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:44:44,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-07-25 08:44:44,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-07-25 08:44:44,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-07-25 08:44:44,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-07-25 08:44:44,956 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 66 [2018-07-25 08:44:44,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:44,956 INFO L472 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-07-25 08:44:44,956 INFO L473 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-07-25 08:44:44,956 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-07-25 08:44:44,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-07-25 08:44:44,957 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:44,957 INFO L354 BasicCegarLoop]: trace histogram [33, 32, 1, 1, 1] [2018-07-25 08:44:44,957 INFO L415 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:44,957 INFO L82 PathProgramCache]: Analyzing trace with hash -547078393, now seen corresponding path program 32 times [2018-07-25 08:44:44,958 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:44,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:45,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:45,085 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:45,085 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-07-25 08:44:45,085 INFO L451 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-07-25 08:44:45,086 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-07-25 08:44:45,086 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 08:44:45,087 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 35 states. [2018-07-25 08:44:45,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:45,111 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-07-25 08:44:45,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-07-25 08:44:45,111 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 68 [2018-07-25 08:44:45,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:45,112 INFO L225 Difference]: With dead ends: 73 [2018-07-25 08:44:45,112 INFO L226 Difference]: Without dead ends: 71 [2018-07-25 08:44:45,113 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 08:44:45,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-07-25 08:44:45,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-07-25 08:44:45,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-07-25 08:44:45,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-07-25 08:44:45,116 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 68 [2018-07-25 08:44:45,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:45,117 INFO L472 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-07-25 08:44:45,117 INFO L473 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-07-25 08:44:45,117 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-07-25 08:44:45,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-07-25 08:44:45,118 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:45,118 INFO L354 BasicCegarLoop]: trace histogram [34, 33, 1, 1, 1] [2018-07-25 08:44:45,118 INFO L415 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:45,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1756273471, now seen corresponding path program 33 times [2018-07-25 08:44:45,118 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:45,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:45,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:45,251 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:45,251 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-25 08:44:45,251 INFO L451 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-25 08:44:45,252 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-25 08:44:45,253 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 08:44:45,253 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 36 states. [2018-07-25 08:44:45,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:45,272 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-07-25 08:44:45,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-07-25 08:44:45,272 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 70 [2018-07-25 08:44:45,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:45,273 INFO L225 Difference]: With dead ends: 75 [2018-07-25 08:44:45,273 INFO L226 Difference]: Without dead ends: 73 [2018-07-25 08:44:45,274 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 08:44:45,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-07-25 08:44:45,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-07-25 08:44:45,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-07-25 08:44:45,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-07-25 08:44:45,277 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 70 [2018-07-25 08:44:45,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:45,278 INFO L472 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-07-25 08:44:45,278 INFO L473 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-25 08:44:45,278 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-07-25 08:44:45,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-07-25 08:44:45,278 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:45,279 INFO L354 BasicCegarLoop]: trace histogram [35, 34, 1, 1, 1] [2018-07-25 08:44:45,279 INFO L415 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:45,279 INFO L82 PathProgramCache]: Analyzing trace with hash 143393787, now seen corresponding path program 34 times [2018-07-25 08:44:45,279 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:45,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:45,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:45,413 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:45,413 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-07-25 08:44:45,413 INFO L451 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-07-25 08:44:45,414 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-07-25 08:44:45,414 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 08:44:45,415 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 37 states. [2018-07-25 08:44:45,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:45,433 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-07-25 08:44:45,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-07-25 08:44:45,433 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 72 [2018-07-25 08:44:45,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:45,434 INFO L225 Difference]: With dead ends: 77 [2018-07-25 08:44:45,434 INFO L226 Difference]: Without dead ends: 75 [2018-07-25 08:44:45,435 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 08:44:45,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-07-25 08:44:45,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-07-25 08:44:45,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-07-25 08:44:45,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-07-25 08:44:45,438 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 72 [2018-07-25 08:44:45,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:45,438 INFO L472 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-07-25 08:44:45,438 INFO L473 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-07-25 08:44:45,439 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-07-25 08:44:45,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-07-25 08:44:45,439 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:45,439 INFO L354 BasicCegarLoop]: trace histogram [36, 35, 1, 1, 1] [2018-07-25 08:44:45,440 INFO L415 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:45,440 INFO L82 PathProgramCache]: Analyzing trace with hash 362527925, now seen corresponding path program 35 times [2018-07-25 08:44:45,440 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:45,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:45,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:45,572 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:45,572 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-07-25 08:44:45,572 INFO L451 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-07-25 08:44:45,573 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-07-25 08:44:45,573 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:44:45,574 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 38 states. [2018-07-25 08:44:45,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:45,599 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-07-25 08:44:45,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-25 08:44:45,599 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 74 [2018-07-25 08:44:45,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:45,600 INFO L225 Difference]: With dead ends: 79 [2018-07-25 08:44:45,600 INFO L226 Difference]: Without dead ends: 77 [2018-07-25 08:44:45,601 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:44:45,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-07-25 08:44:45,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-07-25 08:44:45,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-07-25 08:44:45,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-07-25 08:44:45,604 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 74 [2018-07-25 08:44:45,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:45,605 INFO L472 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-07-25 08:44:45,605 INFO L473 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-07-25 08:44:45,605 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-07-25 08:44:45,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-07-25 08:44:45,606 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:45,606 INFO L354 BasicCegarLoop]: trace histogram [37, 36, 1, 1, 1] [2018-07-25 08:44:45,606 INFO L415 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:45,606 INFO L82 PathProgramCache]: Analyzing trace with hash 497037039, now seen corresponding path program 36 times [2018-07-25 08:44:45,606 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:45,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:45,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:45,741 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:45,741 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-07-25 08:44:45,741 INFO L451 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-07-25 08:44:45,741 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-07-25 08:44:45,742 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 08:44:45,742 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 39 states. [2018-07-25 08:44:45,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:45,762 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-07-25 08:44:45,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-25 08:44:45,762 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 76 [2018-07-25 08:44:45,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:45,763 INFO L225 Difference]: With dead ends: 81 [2018-07-25 08:44:45,763 INFO L226 Difference]: Without dead ends: 79 [2018-07-25 08:44:45,764 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 08:44:45,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-07-25 08:44:45,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-07-25 08:44:45,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-07-25 08:44:45,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-07-25 08:44:45,768 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 76 [2018-07-25 08:44:45,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:45,768 INFO L472 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-07-25 08:44:45,768 INFO L473 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-07-25 08:44:45,769 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-07-25 08:44:45,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-07-25 08:44:45,769 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:45,769 INFO L354 BasicCegarLoop]: trace histogram [38, 37, 1, 1, 1] [2018-07-25 08:44:45,770 INFO L415 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:45,770 INFO L82 PathProgramCache]: Analyzing trace with hash 911276713, now seen corresponding path program 37 times [2018-07-25 08:44:45,770 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:45,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:45,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:45,910 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:45,910 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-25 08:44:45,911 INFO L451 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-25 08:44:45,911 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-25 08:44:45,912 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 08:44:45,912 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 40 states. [2018-07-25 08:44:45,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:45,939 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-07-25 08:44:45,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-07-25 08:44:45,939 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 78 [2018-07-25 08:44:45,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:45,940 INFO L225 Difference]: With dead ends: 83 [2018-07-25 08:44:45,940 INFO L226 Difference]: Without dead ends: 81 [2018-07-25 08:44:45,941 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 08:44:45,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-07-25 08:44:45,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-07-25 08:44:45,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-07-25 08:44:45,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-07-25 08:44:45,945 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 78 [2018-07-25 08:44:45,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:45,945 INFO L472 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-07-25 08:44:45,945 INFO L473 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-25 08:44:45,945 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-07-25 08:44:45,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-07-25 08:44:45,946 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:45,946 INFO L354 BasicCegarLoop]: trace histogram [39, 38, 1, 1, 1] [2018-07-25 08:44:45,946 INFO L415 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:45,947 INFO L82 PathProgramCache]: Analyzing trace with hash -436355101, now seen corresponding path program 38 times [2018-07-25 08:44:45,947 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:45,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:46,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:46,090 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:46,090 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-07-25 08:44:46,090 INFO L451 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-07-25 08:44:46,091 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-07-25 08:44:46,091 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 08:44:46,092 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 41 states. [2018-07-25 08:44:46,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:46,115 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-07-25 08:44:46,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-07-25 08:44:46,116 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 80 [2018-07-25 08:44:46,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:46,117 INFO L225 Difference]: With dead ends: 85 [2018-07-25 08:44:46,117 INFO L226 Difference]: Without dead ends: 83 [2018-07-25 08:44:46,118 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 08:44:46,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-07-25 08:44:46,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-07-25 08:44:46,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-07-25 08:44:46,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-07-25 08:44:46,121 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 80 [2018-07-25 08:44:46,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:46,121 INFO L472 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-07-25 08:44:46,121 INFO L473 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-07-25 08:44:46,122 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-07-25 08:44:46,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-07-25 08:44:46,122 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:46,122 INFO L354 BasicCegarLoop]: trace histogram [40, 39, 1, 1, 1] [2018-07-25 08:44:46,123 INFO L415 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:46,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1569595037, now seen corresponding path program 39 times [2018-07-25 08:44:46,123 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:46,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:46,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:46,274 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:46,274 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-07-25 08:44:46,274 INFO L451 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-07-25 08:44:46,275 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-07-25 08:44:46,275 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 08:44:46,276 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 42 states. [2018-07-25 08:44:46,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:46,298 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-07-25 08:44:46,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-07-25 08:44:46,298 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 82 [2018-07-25 08:44:46,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:46,299 INFO L225 Difference]: With dead ends: 87 [2018-07-25 08:44:46,299 INFO L226 Difference]: Without dead ends: 85 [2018-07-25 08:44:46,301 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 08:44:46,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-07-25 08:44:46,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-07-25 08:44:46,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-07-25 08:44:46,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2018-07-25 08:44:46,304 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 82 [2018-07-25 08:44:46,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:46,305 INFO L472 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2018-07-25 08:44:46,305 INFO L473 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-07-25 08:44:46,305 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2018-07-25 08:44:46,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-07-25 08:44:46,306 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:46,306 INFO L354 BasicCegarLoop]: trace histogram [41, 40, 1, 1, 1] [2018-07-25 08:44:46,306 INFO L415 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:46,306 INFO L82 PathProgramCache]: Analyzing trace with hash 847361751, now seen corresponding path program 40 times [2018-07-25 08:44:46,306 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:46,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:46,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:46,460 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:46,460 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-07-25 08:44:46,461 INFO L451 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-07-25 08:44:46,461 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-07-25 08:44:46,462 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 08:44:46,463 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 43 states. [2018-07-25 08:44:46,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:46,488 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-07-25 08:44:46,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-07-25 08:44:46,489 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 84 [2018-07-25 08:44:46,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:46,490 INFO L225 Difference]: With dead ends: 89 [2018-07-25 08:44:46,490 INFO L226 Difference]: Without dead ends: 87 [2018-07-25 08:44:46,491 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 08:44:46,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-07-25 08:44:46,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-07-25 08:44:46,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-07-25 08:44:46,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-07-25 08:44:46,495 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 84 [2018-07-25 08:44:46,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:46,495 INFO L472 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-07-25 08:44:46,495 INFO L473 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-07-25 08:44:46,495 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-07-25 08:44:46,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-07-25 08:44:46,496 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:46,496 INFO L354 BasicCegarLoop]: trace histogram [42, 41, 1, 1, 1] [2018-07-25 08:44:46,497 INFO L415 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:46,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1729091439, now seen corresponding path program 41 times [2018-07-25 08:44:46,497 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:46,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:46,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:46,682 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:46,682 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-25 08:44:46,682 INFO L451 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-25 08:44:46,683 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-25 08:44:46,684 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:44:46,684 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 44 states. [2018-07-25 08:44:46,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:46,721 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-07-25 08:44:46,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-25 08:44:46,722 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 86 [2018-07-25 08:44:46,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:46,723 INFO L225 Difference]: With dead ends: 91 [2018-07-25 08:44:46,723 INFO L226 Difference]: Without dead ends: 89 [2018-07-25 08:44:46,724 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:44:46,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-07-25 08:44:46,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-07-25 08:44:46,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-07-25 08:44:46,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-07-25 08:44:46,729 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 86 [2018-07-25 08:44:46,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:46,730 INFO L472 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-07-25 08:44:46,730 INFO L473 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-25 08:44:46,730 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-07-25 08:44:46,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-07-25 08:44:46,731 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:46,731 INFO L354 BasicCegarLoop]: trace histogram [43, 42, 1, 1, 1] [2018-07-25 08:44:46,731 INFO L415 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:46,732 INFO L82 PathProgramCache]: Analyzing trace with hash 495522763, now seen corresponding path program 42 times [2018-07-25 08:44:46,732 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:46,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:46,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:46,933 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:46,934 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-07-25 08:44:46,934 INFO L451 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-07-25 08:44:46,935 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-07-25 08:44:46,936 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 08:44:46,936 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 45 states. [2018-07-25 08:44:47,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:47,016 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-07-25 08:44:47,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-07-25 08:44:47,017 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 88 [2018-07-25 08:44:47,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:47,018 INFO L225 Difference]: With dead ends: 93 [2018-07-25 08:44:47,018 INFO L226 Difference]: Without dead ends: 91 [2018-07-25 08:44:47,019 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 08:44:47,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-07-25 08:44:47,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-07-25 08:44:47,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-07-25 08:44:47,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-07-25 08:44:47,025 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 88 [2018-07-25 08:44:47,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:47,026 INFO L472 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-07-25 08:44:47,026 INFO L473 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-07-25 08:44:47,026 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-07-25 08:44:47,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-07-25 08:44:47,027 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:47,027 INFO L354 BasicCegarLoop]: trace histogram [44, 43, 1, 1, 1] [2018-07-25 08:44:47,027 INFO L415 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:47,028 INFO L82 PathProgramCache]: Analyzing trace with hash -543942523, now seen corresponding path program 43 times [2018-07-25 08:44:47,028 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:47,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:47,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:47,198 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:47,198 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-07-25 08:44:47,199 INFO L451 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-07-25 08:44:47,200 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-07-25 08:44:47,201 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 08:44:47,201 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 46 states. [2018-07-25 08:44:47,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:47,233 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-07-25 08:44:47,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-07-25 08:44:47,233 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 90 [2018-07-25 08:44:47,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:47,235 INFO L225 Difference]: With dead ends: 95 [2018-07-25 08:44:47,235 INFO L226 Difference]: Without dead ends: 93 [2018-07-25 08:44:47,236 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 08:44:47,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-07-25 08:44:47,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-07-25 08:44:47,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-07-25 08:44:47,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-07-25 08:44:47,242 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 90 [2018-07-25 08:44:47,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:47,242 INFO L472 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-07-25 08:44:47,242 INFO L473 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-07-25 08:44:47,242 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-07-25 08:44:47,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-07-25 08:44:47,243 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:47,243 INFO L354 BasicCegarLoop]: trace histogram [45, 44, 1, 1, 1] [2018-07-25 08:44:47,243 INFO L415 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:47,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1257297599, now seen corresponding path program 44 times [2018-07-25 08:44:47,244 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:47,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:47,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:47,424 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:47,424 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-07-25 08:44:47,424 INFO L451 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-07-25 08:44:47,425 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-07-25 08:44:47,426 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 08:44:47,426 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 47 states. [2018-07-25 08:44:47,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:47,472 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-07-25 08:44:47,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-07-25 08:44:47,472 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 92 [2018-07-25 08:44:47,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:47,473 INFO L225 Difference]: With dead ends: 97 [2018-07-25 08:44:47,473 INFO L226 Difference]: Without dead ends: 95 [2018-07-25 08:44:47,474 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 08:44:47,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-07-25 08:44:47,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-07-25 08:44:47,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-07-25 08:44:47,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-07-25 08:44:47,478 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 92 [2018-07-25 08:44:47,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:47,479 INFO L472 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-07-25 08:44:47,479 INFO L473 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-07-25 08:44:47,479 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-07-25 08:44:47,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-07-25 08:44:47,480 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:47,480 INFO L354 BasicCegarLoop]: trace histogram [46, 45, 1, 1, 1] [2018-07-25 08:44:47,480 INFO L415 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:47,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1377234553, now seen corresponding path program 45 times [2018-07-25 08:44:47,480 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:47,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:47,675 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:47,675 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:47,675 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-25 08:44:47,676 INFO L451 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-25 08:44:47,676 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-25 08:44:47,677 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 08:44:47,677 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 48 states. [2018-07-25 08:44:47,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:47,719 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-07-25 08:44:47,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-07-25 08:44:47,720 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 94 [2018-07-25 08:44:47,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:47,721 INFO L225 Difference]: With dead ends: 99 [2018-07-25 08:44:47,721 INFO L226 Difference]: Without dead ends: 97 [2018-07-25 08:44:47,722 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 08:44:47,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-07-25 08:44:47,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-07-25 08:44:47,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-07-25 08:44:47,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-07-25 08:44:47,726 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 94 [2018-07-25 08:44:47,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:47,726 INFO L472 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-07-25 08:44:47,727 INFO L473 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-25 08:44:47,727 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-07-25 08:44:47,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-07-25 08:44:47,727 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:47,728 INFO L354 BasicCegarLoop]: trace histogram [47, 46, 1, 1, 1] [2018-07-25 08:44:47,728 INFO L415 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:47,728 INFO L82 PathProgramCache]: Analyzing trace with hash 672530355, now seen corresponding path program 46 times [2018-07-25 08:44:47,728 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:47,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:47,937 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:47,937 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:47,937 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-07-25 08:44:47,937 INFO L451 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-07-25 08:44:47,938 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-07-25 08:44:47,939 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 08:44:47,939 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 49 states. [2018-07-25 08:44:47,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:47,978 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-07-25 08:44:47,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-07-25 08:44:47,978 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 96 [2018-07-25 08:44:47,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:47,979 INFO L225 Difference]: With dead ends: 101 [2018-07-25 08:44:47,979 INFO L226 Difference]: Without dead ends: 99 [2018-07-25 08:44:47,980 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 08:44:47,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-07-25 08:44:47,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-07-25 08:44:47,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-07-25 08:44:47,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-07-25 08:44:47,985 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 96 [2018-07-25 08:44:47,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:47,986 INFO L472 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-07-25 08:44:47,986 INFO L473 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-07-25 08:44:47,986 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-07-25 08:44:47,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-07-25 08:44:47,987 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:47,987 INFO L354 BasicCegarLoop]: trace histogram [48, 47, 1, 1, 1] [2018-07-25 08:44:47,987 INFO L415 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:47,987 INFO L82 PathProgramCache]: Analyzing trace with hash 2056628845, now seen corresponding path program 47 times [2018-07-25 08:44:47,988 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:48,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:48,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:48,197 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:48,197 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-07-25 08:44:48,198 INFO L451 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-07-25 08:44:48,198 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-07-25 08:44:48,199 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:44:48,199 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 50 states. [2018-07-25 08:44:48,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:48,241 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-07-25 08:44:48,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-07-25 08:44:48,241 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 98 [2018-07-25 08:44:48,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:48,242 INFO L225 Difference]: With dead ends: 103 [2018-07-25 08:44:48,242 INFO L226 Difference]: Without dead ends: 101 [2018-07-25 08:44:48,243 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:44:48,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-07-25 08:44:48,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-07-25 08:44:48,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-07-25 08:44:48,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2018-07-25 08:44:48,249 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 98 [2018-07-25 08:44:48,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:48,249 INFO L472 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2018-07-25 08:44:48,249 INFO L473 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-07-25 08:44:48,249 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2018-07-25 08:44:48,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-07-25 08:44:48,250 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:48,250 INFO L354 BasicCegarLoop]: trace histogram [49, 48, 1, 1, 1] [2018-07-25 08:44:48,251 INFO L415 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:48,251 INFO L82 PathProgramCache]: Analyzing trace with hash 735415975, now seen corresponding path program 48 times [2018-07-25 08:44:48,251 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:48,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:48,464 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:48,464 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:48,464 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-07-25 08:44:48,465 INFO L451 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-07-25 08:44:48,465 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-07-25 08:44:48,466 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 08:44:48,466 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 51 states. [2018-07-25 08:44:48,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:48,511 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-07-25 08:44:48,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-07-25 08:44:48,511 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 100 [2018-07-25 08:44:48,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:48,512 INFO L225 Difference]: With dead ends: 105 [2018-07-25 08:44:48,512 INFO L226 Difference]: Without dead ends: 103 [2018-07-25 08:44:48,513 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 08:44:48,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-07-25 08:44:48,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-07-25 08:44:48,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-07-25 08:44:48,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-07-25 08:44:48,518 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 100 [2018-07-25 08:44:48,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:48,519 INFO L472 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-07-25 08:44:48,519 INFO L473 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-07-25 08:44:48,519 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-07-25 08:44:48,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-07-25 08:44:48,520 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:48,520 INFO L354 BasicCegarLoop]: trace histogram [50, 49, 1, 1, 1] [2018-07-25 08:44:48,520 INFO L415 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:48,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1934799775, now seen corresponding path program 49 times [2018-07-25 08:44:48,521 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:48,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:48,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:48,724 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:48,724 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-25 08:44:48,724 INFO L451 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-25 08:44:48,725 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-25 08:44:48,725 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 08:44:48,726 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 52 states. [2018-07-25 08:44:48,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:48,764 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-07-25 08:44:48,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-07-25 08:44:48,765 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 102 [2018-07-25 08:44:48,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:48,766 INFO L225 Difference]: With dead ends: 107 [2018-07-25 08:44:48,766 INFO L226 Difference]: Without dead ends: 105 [2018-07-25 08:44:48,767 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 08:44:48,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-07-25 08:44:48,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-07-25 08:44:48,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-07-25 08:44:48,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-07-25 08:44:48,771 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 102 [2018-07-25 08:44:48,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:48,771 INFO L472 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-07-25 08:44:48,771 INFO L473 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-25 08:44:48,771 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-07-25 08:44:48,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-07-25 08:44:48,772 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:48,772 INFO L354 BasicCegarLoop]: trace histogram [51, 50, 1, 1, 1] [2018-07-25 08:44:48,773 INFO L415 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:48,773 INFO L82 PathProgramCache]: Analyzing trace with hash 378307483, now seen corresponding path program 50 times [2018-07-25 08:44:48,773 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:48,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:48,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:48,979 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:48,979 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-07-25 08:44:48,980 INFO L451 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-07-25 08:44:48,980 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-07-25 08:44:48,981 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 08:44:48,982 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 53 states. [2018-07-25 08:44:49,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:49,024 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-07-25 08:44:49,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-07-25 08:44:49,024 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 104 [2018-07-25 08:44:49,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:49,025 INFO L225 Difference]: With dead ends: 109 [2018-07-25 08:44:49,026 INFO L226 Difference]: Without dead ends: 107 [2018-07-25 08:44:49,027 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 08:44:49,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-07-25 08:44:49,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-07-25 08:44:49,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-07-25 08:44:49,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-07-25 08:44:49,035 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 104 [2018-07-25 08:44:49,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:49,035 INFO L472 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-07-25 08:44:49,035 INFO L473 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-07-25 08:44:49,035 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-07-25 08:44:49,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-07-25 08:44:49,038 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:49,038 INFO L354 BasicCegarLoop]: trace histogram [52, 51, 1, 1, 1] [2018-07-25 08:44:49,038 INFO L415 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:49,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1518676907, now seen corresponding path program 51 times [2018-07-25 08:44:49,038 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:49,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:49,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2652 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:49,277 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:49,277 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-07-25 08:44:49,278 INFO L451 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-07-25 08:44:49,278 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-07-25 08:44:49,279 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 08:44:49,280 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 54 states. [2018-07-25 08:44:49,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:49,320 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-07-25 08:44:49,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-07-25 08:44:49,320 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 106 [2018-07-25 08:44:49,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:49,322 INFO L225 Difference]: With dead ends: 111 [2018-07-25 08:44:49,322 INFO L226 Difference]: Without dead ends: 109 [2018-07-25 08:44:49,323 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 08:44:49,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-07-25 08:44:49,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-07-25 08:44:49,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-07-25 08:44:49,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-07-25 08:44:49,329 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 106 [2018-07-25 08:44:49,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:49,330 INFO L472 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-07-25 08:44:49,330 INFO L473 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-07-25 08:44:49,330 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-07-25 08:44:49,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-07-25 08:44:49,331 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:49,331 INFO L354 BasicCegarLoop]: trace histogram [53, 52, 1, 1, 1] [2018-07-25 08:44:49,331 INFO L415 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:49,332 INFO L82 PathProgramCache]: Analyzing trace with hash 840425103, now seen corresponding path program 52 times [2018-07-25 08:44:49,332 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:49,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:49,603 INFO L134 CoverageAnalysis]: Checked inductivity of 2756 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:49,604 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:49,604 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-07-25 08:44:49,604 INFO L451 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-07-25 08:44:49,605 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-07-25 08:44:49,606 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 08:44:49,606 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 55 states. [2018-07-25 08:44:49,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:49,668 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-07-25 08:44:49,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-07-25 08:44:49,668 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 108 [2018-07-25 08:44:49,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:49,669 INFO L225 Difference]: With dead ends: 113 [2018-07-25 08:44:49,669 INFO L226 Difference]: Without dead ends: 111 [2018-07-25 08:44:49,670 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 08:44:49,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-07-25 08:44:49,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-07-25 08:44:49,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-07-25 08:44:49,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-07-25 08:44:49,676 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 108 [2018-07-25 08:44:49,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:49,676 INFO L472 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-07-25 08:44:49,676 INFO L473 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-07-25 08:44:49,676 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-07-25 08:44:49,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-07-25 08:44:49,678 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:49,678 INFO L354 BasicCegarLoop]: trace histogram [54, 53, 1, 1, 1] [2018-07-25 08:44:49,678 INFO L415 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:49,679 INFO L82 PathProgramCache]: Analyzing trace with hash 194724425, now seen corresponding path program 53 times [2018-07-25 08:44:49,679 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:49,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:49,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:49,902 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:49,902 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-25 08:44:49,902 INFO L451 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-25 08:44:49,903 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-25 08:44:49,904 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:44:49,904 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 56 states. [2018-07-25 08:44:49,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:49,951 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-07-25 08:44:49,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-07-25 08:44:49,952 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 110 [2018-07-25 08:44:49,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:49,953 INFO L225 Difference]: With dead ends: 115 [2018-07-25 08:44:49,953 INFO L226 Difference]: Without dead ends: 113 [2018-07-25 08:44:49,954 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:44:49,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-07-25 08:44:49,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-07-25 08:44:49,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-07-25 08:44:49,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2018-07-25 08:44:49,958 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 110 [2018-07-25 08:44:49,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:49,959 INFO L472 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2018-07-25 08:44:49,959 INFO L473 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-25 08:44:49,959 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2018-07-25 08:44:49,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-07-25 08:44:49,960 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:49,960 INFO L354 BasicCegarLoop]: trace histogram [55, 54, 1, 1, 1] [2018-07-25 08:44:49,960 INFO L415 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:49,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1848336509, now seen corresponding path program 54 times [2018-07-25 08:44:49,961 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:49,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:50,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:50,154 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:50,155 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-07-25 08:44:50,155 INFO L451 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-07-25 08:44:50,156 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-07-25 08:44:50,156 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 08:44:50,157 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 57 states. [2018-07-25 08:44:50,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:50,212 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-07-25 08:44:50,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-07-25 08:44:50,212 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 112 [2018-07-25 08:44:50,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:50,213 INFO L225 Difference]: With dead ends: 117 [2018-07-25 08:44:50,213 INFO L226 Difference]: Without dead ends: 115 [2018-07-25 08:44:50,214 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 08:44:50,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-07-25 08:44:50,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-07-25 08:44:50,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-07-25 08:44:50,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-07-25 08:44:50,219 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 112 [2018-07-25 08:44:50,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:50,219 INFO L472 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-07-25 08:44:50,219 INFO L473 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-07-25 08:44:50,219 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-07-25 08:44:50,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-07-25 08:44:50,220 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:50,221 INFO L354 BasicCegarLoop]: trace histogram [56, 55, 1, 1, 1] [2018-07-25 08:44:50,221 INFO L415 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:50,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1865127485, now seen corresponding path program 55 times [2018-07-25 08:44:50,221 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:50,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:50,426 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:50,426 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:50,426 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-07-25 08:44:50,427 INFO L451 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-07-25 08:44:50,427 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-07-25 08:44:50,428 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:44:50,428 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 58 states. [2018-07-25 08:44:50,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:50,489 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2018-07-25 08:44:50,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-07-25 08:44:50,489 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 114 [2018-07-25 08:44:50,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:50,490 INFO L225 Difference]: With dead ends: 119 [2018-07-25 08:44:50,490 INFO L226 Difference]: Without dead ends: 117 [2018-07-25 08:44:50,491 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:44:50,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-07-25 08:44:50,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-07-25 08:44:50,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-07-25 08:44:50,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2018-07-25 08:44:50,496 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 114 [2018-07-25 08:44:50,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:50,496 INFO L472 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2018-07-25 08:44:50,496 INFO L473 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-07-25 08:44:50,497 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2018-07-25 08:44:50,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-07-25 08:44:50,498 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:50,498 INFO L354 BasicCegarLoop]: trace histogram [57, 56, 1, 1, 1] [2018-07-25 08:44:50,498 INFO L415 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:50,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1386202743, now seen corresponding path program 56 times [2018-07-25 08:44:50,499 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:50,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:50,720 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:50,721 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:50,721 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-07-25 08:44:50,721 INFO L451 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-07-25 08:44:50,722 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-07-25 08:44:50,723 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 08:44:50,723 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand 59 states. [2018-07-25 08:44:50,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:50,770 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-07-25 08:44:50,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-07-25 08:44:50,770 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 116 [2018-07-25 08:44:50,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:50,771 INFO L225 Difference]: With dead ends: 121 [2018-07-25 08:44:50,771 INFO L226 Difference]: Without dead ends: 119 [2018-07-25 08:44:50,773 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 08:44:50,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-07-25 08:44:50,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-07-25 08:44:50,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-07-25 08:44:50,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-07-25 08:44:50,777 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 116 [2018-07-25 08:44:50,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:50,778 INFO L472 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-07-25 08:44:50,778 INFO L473 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-07-25 08:44:50,778 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-07-25 08:44:50,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-07-25 08:44:50,779 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:50,779 INFO L354 BasicCegarLoop]: trace histogram [58, 57, 1, 1, 1] [2018-07-25 08:44:50,779 INFO L415 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:50,780 INFO L82 PathProgramCache]: Analyzing trace with hash 701026353, now seen corresponding path program 57 times [2018-07-25 08:44:50,780 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:50,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:50,995 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:50,996 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:50,996 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-25 08:44:50,996 INFO L451 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-25 08:44:50,997 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-25 08:44:50,998 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 08:44:50,998 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 60 states. [2018-07-25 08:44:51,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:51,048 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2018-07-25 08:44:51,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-07-25 08:44:51,048 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 118 [2018-07-25 08:44:51,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:51,049 INFO L225 Difference]: With dead ends: 123 [2018-07-25 08:44:51,050 INFO L226 Difference]: Without dead ends: 121 [2018-07-25 08:44:51,051 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 08:44:51,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-07-25 08:44:51,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-07-25 08:44:51,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-07-25 08:44:51,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2018-07-25 08:44:51,055 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 118 [2018-07-25 08:44:51,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:51,055 INFO L472 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2018-07-25 08:44:51,056 INFO L473 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-25 08:44:51,056 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2018-07-25 08:44:51,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-07-25 08:44:51,057 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:51,057 INFO L354 BasicCegarLoop]: trace histogram [59, 58, 1, 1, 1] [2018-07-25 08:44:51,057 INFO L415 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:51,057 INFO L82 PathProgramCache]: Analyzing trace with hash -623488149, now seen corresponding path program 58 times [2018-07-25 08:44:51,058 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:51,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:51,288 INFO L134 CoverageAnalysis]: Checked inductivity of 3422 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:51,288 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:51,288 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-07-25 08:44:51,289 INFO L451 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-07-25 08:44:51,290 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-07-25 08:44:51,290 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 08:44:51,291 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand 61 states. [2018-07-25 08:44:51,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:51,362 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-07-25 08:44:51,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-07-25 08:44:51,363 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 120 [2018-07-25 08:44:51,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:51,364 INFO L225 Difference]: With dead ends: 125 [2018-07-25 08:44:51,364 INFO L226 Difference]: Without dead ends: 123 [2018-07-25 08:44:51,366 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 08:44:51,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-07-25 08:44:51,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-07-25 08:44:51,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-07-25 08:44:51,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2018-07-25 08:44:51,371 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 120 [2018-07-25 08:44:51,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:51,371 INFO L472 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2018-07-25 08:44:51,371 INFO L473 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-07-25 08:44:51,371 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2018-07-25 08:44:51,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-07-25 08:44:51,373 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:51,373 INFO L354 BasicCegarLoop]: trace histogram [60, 59, 1, 1, 1] [2018-07-25 08:44:51,373 INFO L415 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:51,373 INFO L82 PathProgramCache]: Analyzing trace with hash 2123362341, now seen corresponding path program 59 times [2018-07-25 08:44:51,373 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:51,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:51,616 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:51,616 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:51,617 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-07-25 08:44:51,617 INFO L451 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-07-25 08:44:51,618 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-07-25 08:44:51,619 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:44:51,619 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 62 states. [2018-07-25 08:44:51,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:51,683 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2018-07-25 08:44:51,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-07-25 08:44:51,684 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 122 [2018-07-25 08:44:51,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:51,685 INFO L225 Difference]: With dead ends: 127 [2018-07-25 08:44:51,685 INFO L226 Difference]: Without dead ends: 125 [2018-07-25 08:44:51,686 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:44:51,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-07-25 08:44:51,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-07-25 08:44:51,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-07-25 08:44:51,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 125 transitions. [2018-07-25 08:44:51,691 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 125 transitions. Word has length 122 [2018-07-25 08:44:51,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:51,692 INFO L472 AbstractCegarLoop]: Abstraction has 125 states and 125 transitions. [2018-07-25 08:44:51,692 INFO L473 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-07-25 08:44:51,692 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 125 transitions. [2018-07-25 08:44:51,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-07-25 08:44:51,693 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:51,694 INFO L354 BasicCegarLoop]: trace histogram [61, 60, 1, 1, 1] [2018-07-25 08:44:51,694 INFO L415 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:51,694 INFO L82 PathProgramCache]: Analyzing trace with hash 441796191, now seen corresponding path program 60 times [2018-07-25 08:44:51,694 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:51,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:51,971 INFO L134 CoverageAnalysis]: Checked inductivity of 3660 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:51,972 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:51,972 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-07-25 08:44:51,973 INFO L451 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-07-25 08:44:51,973 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-07-25 08:44:51,974 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 08:44:51,975 INFO L87 Difference]: Start difference. First operand 125 states and 125 transitions. Second operand 63 states. [2018-07-25 08:44:52,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:52,051 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-07-25 08:44:52,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-07-25 08:44:52,051 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 124 [2018-07-25 08:44:52,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:52,052 INFO L225 Difference]: With dead ends: 129 [2018-07-25 08:44:52,053 INFO L226 Difference]: Without dead ends: 127 [2018-07-25 08:44:52,054 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 08:44:52,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-07-25 08:44:52,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-07-25 08:44:52,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-07-25 08:44:52,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-07-25 08:44:52,062 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 124 [2018-07-25 08:44:52,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:52,062 INFO L472 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-07-25 08:44:52,063 INFO L473 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-07-25 08:44:52,063 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-07-25 08:44:52,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-07-25 08:44:52,064 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:52,065 INFO L354 BasicCegarLoop]: trace histogram [62, 61, 1, 1, 1] [2018-07-25 08:44:52,065 INFO L415 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:52,065 INFO L82 PathProgramCache]: Analyzing trace with hash -635570663, now seen corresponding path program 61 times [2018-07-25 08:44:52,065 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:52,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:52,399 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:52,400 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:52,400 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-25 08:44:52,401 INFO L451 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-25 08:44:52,402 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-25 08:44:52,403 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:44:52,403 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 64 states. [2018-07-25 08:44:52,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:52,513 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2018-07-25 08:44:52,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-07-25 08:44:52,513 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 126 [2018-07-25 08:44:52,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:52,514 INFO L225 Difference]: With dead ends: 131 [2018-07-25 08:44:52,515 INFO L226 Difference]: Without dead ends: 129 [2018-07-25 08:44:52,516 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:44:52,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-07-25 08:44:52,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-07-25 08:44:52,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-07-25 08:44:52,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 129 transitions. [2018-07-25 08:44:52,522 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 129 transitions. Word has length 126 [2018-07-25 08:44:52,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:52,522 INFO L472 AbstractCegarLoop]: Abstraction has 129 states and 129 transitions. [2018-07-25 08:44:52,522 INFO L473 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-25 08:44:52,523 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 129 transitions. [2018-07-25 08:44:52,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-07-25 08:44:52,524 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:52,524 INFO L354 BasicCegarLoop]: trace histogram [63, 62, 1, 1, 1] [2018-07-25 08:44:52,524 INFO L415 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:52,525 INFO L82 PathProgramCache]: Analyzing trace with hash -897999021, now seen corresponding path program 62 times [2018-07-25 08:44:52,525 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:52,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:52,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:52,780 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:52,780 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-07-25 08:44:52,780 INFO L451 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-07-25 08:44:52,781 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-07-25 08:44:52,784 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:44:52,784 INFO L87 Difference]: Start difference. First operand 129 states and 129 transitions. Second operand 65 states. [2018-07-25 08:44:52,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:52,871 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-07-25 08:44:52,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-07-25 08:44:52,871 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 128 [2018-07-25 08:44:52,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:52,872 INFO L225 Difference]: With dead ends: 133 [2018-07-25 08:44:52,872 INFO L226 Difference]: Without dead ends: 131 [2018-07-25 08:44:52,874 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:44:52,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-07-25 08:44:52,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-07-25 08:44:52,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-07-25 08:44:52,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2018-07-25 08:44:52,880 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 128 [2018-07-25 08:44:52,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:52,880 INFO L472 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2018-07-25 08:44:52,880 INFO L473 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-07-25 08:44:52,880 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2018-07-25 08:44:52,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-07-25 08:44:52,881 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:52,882 INFO L354 BasicCegarLoop]: trace histogram [64, 63, 1, 1, 1] [2018-07-25 08:44:52,882 INFO L415 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:52,882 INFO L82 PathProgramCache]: Analyzing trace with hash 311419405, now seen corresponding path program 63 times [2018-07-25 08:44:52,882 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:52,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:53,137 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:53,138 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:53,138 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-07-25 08:44:53,138 INFO L451 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-07-25 08:44:53,139 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-07-25 08:44:53,141 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:44:53,141 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 66 states. [2018-07-25 08:44:53,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:53,198 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2018-07-25 08:44:53,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-07-25 08:44:53,198 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 130 [2018-07-25 08:44:53,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:53,199 INFO L225 Difference]: With dead ends: 135 [2018-07-25 08:44:53,199 INFO L226 Difference]: Without dead ends: 133 [2018-07-25 08:44:53,202 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:44:53,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-07-25 08:44:53,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-07-25 08:44:53,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-07-25 08:44:53,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2018-07-25 08:44:53,210 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 130 [2018-07-25 08:44:53,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:53,210 INFO L472 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2018-07-25 08:44:53,210 INFO L473 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-07-25 08:44:53,211 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2018-07-25 08:44:53,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-07-25 08:44:53,212 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:53,212 INFO L354 BasicCegarLoop]: trace histogram [65, 64, 1, 1, 1] [2018-07-25 08:44:53,212 INFO L415 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:53,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1373610425, now seen corresponding path program 64 times [2018-07-25 08:44:53,213 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:53,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:53,467 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:53,467 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:53,467 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-07-25 08:44:53,468 INFO L451 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-07-25 08:44:53,469 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-07-25 08:44:53,470 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 08:44:53,470 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 67 states. [2018-07-25 08:44:53,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:53,539 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-07-25 08:44:53,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-07-25 08:44:53,539 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 132 [2018-07-25 08:44:53,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:53,541 INFO L225 Difference]: With dead ends: 137 [2018-07-25 08:44:53,541 INFO L226 Difference]: Without dead ends: 135 [2018-07-25 08:44:53,542 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 08:44:53,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-07-25 08:44:53,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-07-25 08:44:53,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-07-25 08:44:53,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-07-25 08:44:53,547 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 132 [2018-07-25 08:44:53,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:53,547 INFO L472 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-07-25 08:44:53,547 INFO L473 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-07-25 08:44:53,548 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-07-25 08:44:53,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-07-25 08:44:53,549 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:53,549 INFO L354 BasicCegarLoop]: trace histogram [66, 65, 1, 1, 1] [2018-07-25 08:44:53,550 INFO L415 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:53,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1484606463, now seen corresponding path program 65 times [2018-07-25 08:44:53,550 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:53,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:53,792 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:53,793 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:53,793 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-25 08:44:53,793 INFO L451 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-25 08:44:53,794 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-25 08:44:53,795 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:44:53,795 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 68 states. [2018-07-25 08:44:53,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:53,876 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2018-07-25 08:44:53,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-07-25 08:44:53,876 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 134 [2018-07-25 08:44:53,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:53,877 INFO L225 Difference]: With dead ends: 139 [2018-07-25 08:44:53,877 INFO L226 Difference]: Without dead ends: 137 [2018-07-25 08:44:53,878 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:44:53,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-07-25 08:44:53,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-07-25 08:44:53,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-07-25 08:44:53,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 137 transitions. [2018-07-25 08:44:53,885 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 137 transitions. Word has length 134 [2018-07-25 08:44:53,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:53,885 INFO L472 AbstractCegarLoop]: Abstraction has 137 states and 137 transitions. [2018-07-25 08:44:53,885 INFO L473 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-25 08:44:53,885 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 137 transitions. [2018-07-25 08:44:53,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-07-25 08:44:53,886 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:53,887 INFO L354 BasicCegarLoop]: trace histogram [67, 66, 1, 1, 1] [2018-07-25 08:44:53,887 INFO L415 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:53,887 INFO L82 PathProgramCache]: Analyzing trace with hash -777616581, now seen corresponding path program 66 times [2018-07-25 08:44:53,887 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:53,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:54,136 INFO L134 CoverageAnalysis]: Checked inductivity of 4422 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:54,137 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:54,137 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-07-25 08:44:54,138 INFO L451 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-07-25 08:44:54,138 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-07-25 08:44:54,139 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 08:44:54,139 INFO L87 Difference]: Start difference. First operand 137 states and 137 transitions. Second operand 69 states. [2018-07-25 08:44:54,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:54,230 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-07-25 08:44:54,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-07-25 08:44:54,230 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 136 [2018-07-25 08:44:54,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:54,231 INFO L225 Difference]: With dead ends: 141 [2018-07-25 08:44:54,231 INFO L226 Difference]: Without dead ends: 139 [2018-07-25 08:44:54,232 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 08:44:54,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-07-25 08:44:54,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-07-25 08:44:54,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-07-25 08:44:54,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2018-07-25 08:44:54,237 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 136 [2018-07-25 08:44:54,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:54,238 INFO L472 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2018-07-25 08:44:54,238 INFO L473 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-07-25 08:44:54,238 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2018-07-25 08:44:54,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-07-25 08:44:54,240 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:54,240 INFO L354 BasicCegarLoop]: trace histogram [68, 67, 1, 1, 1] [2018-07-25 08:44:54,240 INFO L415 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:54,240 INFO L82 PathProgramCache]: Analyzing trace with hash 34827253, now seen corresponding path program 67 times [2018-07-25 08:44:54,240 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:54,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:54,502 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:54,502 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:54,502 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-07-25 08:44:54,503 INFO L451 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-07-25 08:44:54,503 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-07-25 08:44:54,504 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:44:54,504 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 70 states. [2018-07-25 08:44:54,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:54,581 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-07-25 08:44:54,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-07-25 08:44:54,582 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 138 [2018-07-25 08:44:54,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:54,583 INFO L225 Difference]: With dead ends: 143 [2018-07-25 08:44:54,583 INFO L226 Difference]: Without dead ends: 141 [2018-07-25 08:44:54,584 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:44:54,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-07-25 08:44:54,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-07-25 08:44:54,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-07-25 08:44:54,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2018-07-25 08:44:54,590 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 138 [2018-07-25 08:44:54,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:54,590 INFO L472 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2018-07-25 08:44:54,590 INFO L473 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-07-25 08:44:54,590 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2018-07-25 08:44:54,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-07-25 08:44:54,592 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:54,592 INFO L354 BasicCegarLoop]: trace histogram [69, 68, 1, 1, 1] [2018-07-25 08:44:54,592 INFO L415 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:54,592 INFO L82 PathProgramCache]: Analyzing trace with hash -890696145, now seen corresponding path program 68 times [2018-07-25 08:44:54,592 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:54,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:54,844 INFO L134 CoverageAnalysis]: Checked inductivity of 4692 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:54,845 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:54,845 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-07-25 08:44:54,877 INFO L451 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-07-25 08:44:54,878 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-07-25 08:44:54,878 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 08:44:54,879 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 71 states. [2018-07-25 08:44:54,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:54,962 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-07-25 08:44:54,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-07-25 08:44:54,962 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 140 [2018-07-25 08:44:54,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:54,964 INFO L225 Difference]: With dead ends: 145 [2018-07-25 08:44:54,964 INFO L226 Difference]: Without dead ends: 143 [2018-07-25 08:44:54,964 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 08:44:54,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-07-25 08:44:54,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-07-25 08:44:54,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-07-25 08:44:54,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2018-07-25 08:44:54,970 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 140 [2018-07-25 08:44:54,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:54,970 INFO L472 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2018-07-25 08:44:54,970 INFO L473 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-07-25 08:44:54,970 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2018-07-25 08:44:54,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-07-25 08:44:54,972 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:54,972 INFO L354 BasicCegarLoop]: trace histogram [70, 69, 1, 1, 1] [2018-07-25 08:44:54,972 INFO L415 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:54,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1260451351, now seen corresponding path program 69 times [2018-07-25 08:44:54,974 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:54,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:55,209 INFO L134 CoverageAnalysis]: Checked inductivity of 4830 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:55,209 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:55,210 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-25 08:44:55,210 INFO L451 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-25 08:44:55,211 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-25 08:44:55,211 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:44:55,212 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand 72 states. [2018-07-25 08:44:55,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:55,294 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2018-07-25 08:44:55,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-07-25 08:44:55,294 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 142 [2018-07-25 08:44:55,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:55,295 INFO L225 Difference]: With dead ends: 147 [2018-07-25 08:44:55,296 INFO L226 Difference]: Without dead ends: 145 [2018-07-25 08:44:55,296 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:44:55,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-07-25 08:44:55,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-07-25 08:44:55,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-07-25 08:44:55,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2018-07-25 08:44:55,301 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 142 [2018-07-25 08:44:55,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:55,302 INFO L472 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2018-07-25 08:44:55,302 INFO L473 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-25 08:44:55,302 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2018-07-25 08:44:55,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-07-25 08:44:55,303 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:55,303 INFO L354 BasicCegarLoop]: trace histogram [71, 70, 1, 1, 1] [2018-07-25 08:44:55,304 INFO L415 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:55,304 INFO L82 PathProgramCache]: Analyzing trace with hash -112918749, now seen corresponding path program 70 times [2018-07-25 08:44:55,304 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:55,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:55,538 INFO L134 CoverageAnalysis]: Checked inductivity of 4970 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:55,538 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:55,539 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-07-25 08:44:55,539 INFO L451 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-07-25 08:44:55,540 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-07-25 08:44:55,540 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 08:44:55,540 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand 73 states. [2018-07-25 08:44:55,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:55,633 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-07-25 08:44:55,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-07-25 08:44:55,634 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 144 [2018-07-25 08:44:55,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:55,635 INFO L225 Difference]: With dead ends: 149 [2018-07-25 08:44:55,635 INFO L226 Difference]: Without dead ends: 147 [2018-07-25 08:44:55,636 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 08:44:55,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-07-25 08:44:55,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-07-25 08:44:55,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-07-25 08:44:55,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2018-07-25 08:44:55,641 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 144 [2018-07-25 08:44:55,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:55,642 INFO L472 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2018-07-25 08:44:55,642 INFO L473 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-07-25 08:44:55,642 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2018-07-25 08:44:55,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-07-25 08:44:55,643 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:55,644 INFO L354 BasicCegarLoop]: trace histogram [72, 71, 1, 1, 1] [2018-07-25 08:44:55,644 INFO L415 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:55,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1140683299, now seen corresponding path program 71 times [2018-07-25 08:44:55,644 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:55,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:55,890 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:55,891 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:55,891 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-07-25 08:44:55,891 INFO L451 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-07-25 08:44:55,892 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-07-25 08:44:55,893 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:44:55,893 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 74 states. [2018-07-25 08:44:55,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:55,980 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2018-07-25 08:44:55,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-07-25 08:44:55,980 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 146 [2018-07-25 08:44:55,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:55,982 INFO L225 Difference]: With dead ends: 151 [2018-07-25 08:44:55,982 INFO L226 Difference]: Without dead ends: 149 [2018-07-25 08:44:55,982 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:44:55,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-07-25 08:44:55,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-07-25 08:44:55,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-07-25 08:44:55,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 149 transitions. [2018-07-25 08:44:55,988 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 149 transitions. Word has length 146 [2018-07-25 08:44:55,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:55,988 INFO L472 AbstractCegarLoop]: Abstraction has 149 states and 149 transitions. [2018-07-25 08:44:55,988 INFO L473 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-07-25 08:44:55,988 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 149 transitions. [2018-07-25 08:44:55,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-07-25 08:44:55,989 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:55,990 INFO L354 BasicCegarLoop]: trace histogram [73, 72, 1, 1, 1] [2018-07-25 08:44:55,990 INFO L415 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:55,990 INFO L82 PathProgramCache]: Analyzing trace with hash -979937769, now seen corresponding path program 72 times [2018-07-25 08:44:55,990 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:56,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:56,231 INFO L134 CoverageAnalysis]: Checked inductivity of 5256 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:56,232 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:56,232 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2018-07-25 08:44:56,232 INFO L451 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-07-25 08:44:56,233 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-07-25 08:44:56,233 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 08:44:56,234 INFO L87 Difference]: Start difference. First operand 149 states and 149 transitions. Second operand 75 states. [2018-07-25 08:44:56,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:56,303 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2018-07-25 08:44:56,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-07-25 08:44:56,303 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 148 [2018-07-25 08:44:56,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:56,305 INFO L225 Difference]: With dead ends: 153 [2018-07-25 08:44:56,305 INFO L226 Difference]: Without dead ends: 151 [2018-07-25 08:44:56,306 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 08:44:56,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-07-25 08:44:56,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-07-25 08:44:56,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-07-25 08:44:56,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2018-07-25 08:44:56,313 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 148 [2018-07-25 08:44:56,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:56,313 INFO L472 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2018-07-25 08:44:56,313 INFO L473 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-07-25 08:44:56,314 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2018-07-25 08:44:56,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-07-25 08:44:56,315 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:56,315 INFO L354 BasicCegarLoop]: trace histogram [74, 73, 1, 1, 1] [2018-07-25 08:44:56,315 INFO L415 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:56,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1122306095, now seen corresponding path program 73 times [2018-07-25 08:44:56,316 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:56,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:56,557 INFO L134 CoverageAnalysis]: Checked inductivity of 5402 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:56,557 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:56,557 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-25 08:44:56,558 INFO L451 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-25 08:44:56,559 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-25 08:44:56,559 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:44:56,559 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 76 states. [2018-07-25 08:44:56,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:56,632 INFO L93 Difference]: Finished difference Result 155 states and 155 transitions. [2018-07-25 08:44:56,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-07-25 08:44:56,632 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 150 [2018-07-25 08:44:56,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:56,633 INFO L225 Difference]: With dead ends: 155 [2018-07-25 08:44:56,633 INFO L226 Difference]: Without dead ends: 153 [2018-07-25 08:44:56,634 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:44:56,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-07-25 08:44:56,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-07-25 08:44:56,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-07-25 08:44:56,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 153 transitions. [2018-07-25 08:44:56,639 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 153 transitions. Word has length 150 [2018-07-25 08:44:56,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:56,639 INFO L472 AbstractCegarLoop]: Abstraction has 153 states and 153 transitions. [2018-07-25 08:44:56,639 INFO L473 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-25 08:44:56,640 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 153 transitions. [2018-07-25 08:44:56,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-07-25 08:44:56,641 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:56,641 INFO L354 BasicCegarLoop]: trace histogram [75, 74, 1, 1, 1] [2018-07-25 08:44:56,641 INFO L415 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:56,641 INFO L82 PathProgramCache]: Analyzing trace with hash -499313909, now seen corresponding path program 74 times [2018-07-25 08:44:56,642 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:56,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:56,896 INFO L134 CoverageAnalysis]: Checked inductivity of 5550 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:56,896 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:56,897 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-07-25 08:44:56,897 INFO L451 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-07-25 08:44:56,898 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-07-25 08:44:56,899 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 08:44:56,899 INFO L87 Difference]: Start difference. First operand 153 states and 153 transitions. Second operand 77 states. [2018-07-25 08:44:57,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:57,002 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-07-25 08:44:57,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-07-25 08:44:57,003 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 152 [2018-07-25 08:44:57,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:57,004 INFO L225 Difference]: With dead ends: 157 [2018-07-25 08:44:57,004 INFO L226 Difference]: Without dead ends: 155 [2018-07-25 08:44:57,005 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 08:44:57,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-07-25 08:44:57,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-07-25 08:44:57,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-07-25 08:44:57,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 155 transitions. [2018-07-25 08:44:57,011 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 155 transitions. Word has length 152 [2018-07-25 08:44:57,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:57,012 INFO L472 AbstractCegarLoop]: Abstraction has 155 states and 155 transitions. [2018-07-25 08:44:57,012 INFO L473 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-07-25 08:44:57,012 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 155 transitions. [2018-07-25 08:44:57,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-07-25 08:44:57,014 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:57,014 INFO L354 BasicCegarLoop]: trace histogram [76, 75, 1, 1, 1] [2018-07-25 08:44:57,014 INFO L415 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:57,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1195722693, now seen corresponding path program 75 times [2018-07-25 08:44:57,015 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:57,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:57,384 INFO L134 CoverageAnalysis]: Checked inductivity of 5700 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:57,385 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:57,385 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-07-25 08:44:57,386 INFO L451 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-07-25 08:44:57,387 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-07-25 08:44:57,387 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 08:44:57,388 INFO L87 Difference]: Start difference. First operand 155 states and 155 transitions. Second operand 78 states. [2018-07-25 08:44:57,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:57,452 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2018-07-25 08:44:57,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-07-25 08:44:57,452 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 154 [2018-07-25 08:44:57,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:57,453 INFO L225 Difference]: With dead ends: 159 [2018-07-25 08:44:57,453 INFO L226 Difference]: Without dead ends: 157 [2018-07-25 08:44:57,454 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 08:44:57,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-07-25 08:44:57,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-07-25 08:44:57,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-07-25 08:44:57,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 157 transitions. [2018-07-25 08:44:57,461 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 157 transitions. Word has length 154 [2018-07-25 08:44:57,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:57,461 INFO L472 AbstractCegarLoop]: Abstraction has 157 states and 157 transitions. [2018-07-25 08:44:57,462 INFO L473 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-07-25 08:44:57,462 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 157 transitions. [2018-07-25 08:44:57,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-07-25 08:44:57,463 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:57,464 INFO L354 BasicCegarLoop]: trace histogram [77, 76, 1, 1, 1] [2018-07-25 08:44:57,464 INFO L415 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:57,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1961675265, now seen corresponding path program 76 times [2018-07-25 08:44:57,464 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:57,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:57,755 INFO L134 CoverageAnalysis]: Checked inductivity of 5852 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:57,755 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:57,755 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2018-07-25 08:44:57,756 INFO L451 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-07-25 08:44:57,756 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-07-25 08:44:57,757 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 08:44:57,757 INFO L87 Difference]: Start difference. First operand 157 states and 157 transitions. Second operand 79 states. [2018-07-25 08:44:57,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:57,868 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2018-07-25 08:44:57,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-07-25 08:44:57,868 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 156 [2018-07-25 08:44:57,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:57,870 INFO L225 Difference]: With dead ends: 161 [2018-07-25 08:44:57,870 INFO L226 Difference]: Without dead ends: 159 [2018-07-25 08:44:57,871 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 08:44:57,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-07-25 08:44:57,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-07-25 08:44:57,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-07-25 08:44:57,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2018-07-25 08:44:57,877 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 156 [2018-07-25 08:44:57,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:57,877 INFO L472 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2018-07-25 08:44:57,877 INFO L473 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-07-25 08:44:57,877 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2018-07-25 08:44:57,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-07-25 08:44:57,878 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:57,879 INFO L354 BasicCegarLoop]: trace histogram [78, 77, 1, 1, 1] [2018-07-25 08:44:57,879 INFO L415 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:57,879 INFO L82 PathProgramCache]: Analyzing trace with hash 320765369, now seen corresponding path program 77 times [2018-07-25 08:44:57,879 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:57,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:58,132 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:58,132 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:58,132 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-25 08:44:58,133 INFO L451 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-25 08:44:58,133 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-25 08:44:58,134 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:44:58,134 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand 80 states. [2018-07-25 08:44:58,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:58,231 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2018-07-25 08:44:58,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-07-25 08:44:58,232 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 158 [2018-07-25 08:44:58,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:58,233 INFO L225 Difference]: With dead ends: 163 [2018-07-25 08:44:58,233 INFO L226 Difference]: Without dead ends: 161 [2018-07-25 08:44:58,234 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:44:58,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-07-25 08:44:58,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-07-25 08:44:58,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-07-25 08:44:58,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions. [2018-07-25 08:44:58,241 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 158 [2018-07-25 08:44:58,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:58,241 INFO L472 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions. [2018-07-25 08:44:58,241 INFO L473 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-25 08:44:58,241 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions. [2018-07-25 08:44:58,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-07-25 08:44:58,243 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:58,243 INFO L354 BasicCegarLoop]: trace histogram [79, 78, 1, 1, 1] [2018-07-25 08:44:58,243 INFO L415 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:58,244 INFO L82 PathProgramCache]: Analyzing trace with hash -982073613, now seen corresponding path program 78 times [2018-07-25 08:44:58,244 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:58,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:58,508 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:58,508 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:58,508 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-07-25 08:44:58,509 INFO L451 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-07-25 08:44:58,509 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-07-25 08:44:58,510 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 08:44:58,510 INFO L87 Difference]: Start difference. First operand 161 states and 161 transitions. Second operand 81 states. [2018-07-25 08:44:58,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:58,571 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2018-07-25 08:44:58,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-07-25 08:44:58,571 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 160 [2018-07-25 08:44:58,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:58,573 INFO L225 Difference]: With dead ends: 165 [2018-07-25 08:44:58,573 INFO L226 Difference]: Without dead ends: 163 [2018-07-25 08:44:58,574 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 08:44:58,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-07-25 08:44:58,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-07-25 08:44:58,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-07-25 08:44:58,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 163 transitions. [2018-07-25 08:44:58,579 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 163 transitions. Word has length 160 [2018-07-25 08:44:58,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:58,579 INFO L472 AbstractCegarLoop]: Abstraction has 163 states and 163 transitions. [2018-07-25 08:44:58,579 INFO L473 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-07-25 08:44:58,580 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 163 transitions. [2018-07-25 08:44:58,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-07-25 08:44:58,581 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:58,581 INFO L354 BasicCegarLoop]: trace histogram [80, 79, 1, 1, 1] [2018-07-25 08:44:58,582 INFO L415 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:58,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1120115117, now seen corresponding path program 79 times [2018-07-25 08:44:58,582 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:58,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:58,848 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:58,849 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:58,849 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-07-25 08:44:58,849 INFO L451 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-07-25 08:44:58,850 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-07-25 08:44:58,850 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 08:44:58,851 INFO L87 Difference]: Start difference. First operand 163 states and 163 transitions. Second operand 82 states. [2018-07-25 08:44:58,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:58,967 INFO L93 Difference]: Finished difference Result 167 states and 167 transitions. [2018-07-25 08:44:58,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-07-25 08:44:58,967 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 162 [2018-07-25 08:44:58,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:58,968 INFO L225 Difference]: With dead ends: 167 [2018-07-25 08:44:58,968 INFO L226 Difference]: Without dead ends: 165 [2018-07-25 08:44:58,969 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 08:44:58,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-07-25 08:44:58,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-07-25 08:44:58,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-07-25 08:44:58,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 165 transitions. [2018-07-25 08:44:58,974 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 165 transitions. Word has length 162 [2018-07-25 08:44:58,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:58,974 INFO L472 AbstractCegarLoop]: Abstraction has 165 states and 165 transitions. [2018-07-25 08:44:58,974 INFO L473 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-07-25 08:44:58,974 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 165 transitions. [2018-07-25 08:44:58,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-07-25 08:44:58,976 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:58,976 INFO L354 BasicCegarLoop]: trace histogram [81, 80, 1, 1, 1] [2018-07-25 08:44:58,976 INFO L415 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:58,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1606111769, now seen corresponding path program 80 times [2018-07-25 08:44:58,976 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:59,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:59,248 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:59,248 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:59,248 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2018-07-25 08:44:59,249 INFO L451 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-07-25 08:44:59,250 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-07-25 08:44:59,250 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 08:44:59,251 INFO L87 Difference]: Start difference. First operand 165 states and 165 transitions. Second operand 83 states. [2018-07-25 08:44:59,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:59,377 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-07-25 08:44:59,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-07-25 08:44:59,377 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 164 [2018-07-25 08:44:59,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:59,378 INFO L225 Difference]: With dead ends: 169 [2018-07-25 08:44:59,379 INFO L226 Difference]: Without dead ends: 167 [2018-07-25 08:44:59,380 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 08:44:59,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-07-25 08:44:59,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-07-25 08:44:59,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-07-25 08:44:59,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2018-07-25 08:44:59,384 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 164 [2018-07-25 08:44:59,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:59,385 INFO L472 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2018-07-25 08:44:59,385 INFO L473 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-07-25 08:44:59,385 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2018-07-25 08:44:59,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-07-25 08:44:59,386 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:59,386 INFO L354 BasicCegarLoop]: trace histogram [82, 81, 1, 1, 1] [2018-07-25 08:44:59,387 INFO L415 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:59,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1580098655, now seen corresponding path program 81 times [2018-07-25 08:44:59,387 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:59,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:59,678 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:59,678 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:59,678 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-07-25 08:44:59,679 INFO L451 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-07-25 08:44:59,679 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-07-25 08:44:59,680 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 08:44:59,680 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 84 states. [2018-07-25 08:44:59,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:59,806 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2018-07-25 08:44:59,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-07-25 08:44:59,806 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 166 [2018-07-25 08:44:59,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:59,808 INFO L225 Difference]: With dead ends: 171 [2018-07-25 08:44:59,808 INFO L226 Difference]: Without dead ends: 169 [2018-07-25 08:44:59,808 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 08:44:59,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-07-25 08:44:59,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-07-25 08:44:59,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-07-25 08:44:59,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 169 transitions. [2018-07-25 08:44:59,813 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 169 transitions. Word has length 166 [2018-07-25 08:44:59,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:59,813 INFO L472 AbstractCegarLoop]: Abstraction has 169 states and 169 transitions. [2018-07-25 08:44:59,813 INFO L473 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-07-25 08:44:59,813 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 169 transitions. [2018-07-25 08:44:59,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-07-25 08:44:59,815 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:59,815 INFO L354 BasicCegarLoop]: trace histogram [83, 82, 1, 1, 1] [2018-07-25 08:44:59,815 INFO L415 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:59,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1943667419, now seen corresponding path program 82 times [2018-07-25 08:44:59,815 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:59,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:00,127 INFO L134 CoverageAnalysis]: Checked inductivity of 6806 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:00,127 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:00,128 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2018-07-25 08:45:00,128 INFO L451 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-07-25 08:45:00,129 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-07-25 08:45:00,129 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 08:45:00,130 INFO L87 Difference]: Start difference. First operand 169 states and 169 transitions. Second operand 85 states. [2018-07-25 08:45:00,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:00,263 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2018-07-25 08:45:00,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-07-25 08:45:00,263 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 168 [2018-07-25 08:45:00,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:00,264 INFO L225 Difference]: With dead ends: 173 [2018-07-25 08:45:00,264 INFO L226 Difference]: Without dead ends: 171 [2018-07-25 08:45:00,265 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 08:45:00,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-07-25 08:45:00,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-07-25 08:45:00,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-07-25 08:45:00,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2018-07-25 08:45:00,270 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 168 [2018-07-25 08:45:00,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:00,270 INFO L472 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2018-07-25 08:45:00,270 INFO L473 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-07-25 08:45:00,270 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2018-07-25 08:45:00,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-07-25 08:45:00,272 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:00,272 INFO L354 BasicCegarLoop]: trace histogram [84, 83, 1, 1, 1] [2018-07-25 08:45:00,272 INFO L415 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:00,272 INFO L82 PathProgramCache]: Analyzing trace with hash -446332011, now seen corresponding path program 83 times [2018-07-25 08:45:00,272 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:00,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:00,555 INFO L134 CoverageAnalysis]: Checked inductivity of 6972 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:00,555 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:00,556 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-07-25 08:45:00,556 INFO L451 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-07-25 08:45:00,557 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-07-25 08:45:00,557 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:45:00,557 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 86 states. [2018-07-25 08:45:00,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:00,683 INFO L93 Difference]: Finished difference Result 175 states and 175 transitions. [2018-07-25 08:45:00,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-07-25 08:45:00,683 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 170 [2018-07-25 08:45:00,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:00,684 INFO L225 Difference]: With dead ends: 175 [2018-07-25 08:45:00,684 INFO L226 Difference]: Without dead ends: 173 [2018-07-25 08:45:00,685 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:45:00,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-07-25 08:45:00,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-07-25 08:45:00,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-07-25 08:45:00,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 173 transitions. [2018-07-25 08:45:00,689 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 173 transitions. Word has length 170 [2018-07-25 08:45:00,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:00,689 INFO L472 AbstractCegarLoop]: Abstraction has 173 states and 173 transitions. [2018-07-25 08:45:00,689 INFO L473 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-07-25 08:45:00,689 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 173 transitions. [2018-07-25 08:45:00,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-07-25 08:45:00,691 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:00,691 INFO L354 BasicCegarLoop]: trace histogram [85, 84, 1, 1, 1] [2018-07-25 08:45:00,691 INFO L415 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:00,691 INFO L82 PathProgramCache]: Analyzing trace with hash 571719119, now seen corresponding path program 84 times [2018-07-25 08:45:00,692 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:00,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:00,994 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:00,994 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:00,994 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2018-07-25 08:45:00,995 INFO L451 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-07-25 08:45:00,996 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-07-25 08:45:00,996 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 08:45:00,997 INFO L87 Difference]: Start difference. First operand 173 states and 173 transitions. Second operand 87 states. [2018-07-25 08:45:01,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:01,143 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-07-25 08:45:01,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-07-25 08:45:01,143 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 172 [2018-07-25 08:45:01,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:01,145 INFO L225 Difference]: With dead ends: 177 [2018-07-25 08:45:01,145 INFO L226 Difference]: Without dead ends: 175 [2018-07-25 08:45:01,145 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 08:45:01,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-07-25 08:45:01,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-07-25 08:45:01,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-07-25 08:45:01,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 175 transitions. [2018-07-25 08:45:01,150 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 175 transitions. Word has length 172 [2018-07-25 08:45:01,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:01,150 INFO L472 AbstractCegarLoop]: Abstraction has 175 states and 175 transitions. [2018-07-25 08:45:01,150 INFO L473 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-07-25 08:45:01,150 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 175 transitions. [2018-07-25 08:45:01,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-07-25 08:45:01,152 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:01,152 INFO L354 BasicCegarLoop]: trace histogram [86, 85, 1, 1, 1] [2018-07-25 08:45:01,152 INFO L415 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:01,152 INFO L82 PathProgramCache]: Analyzing trace with hash -333688439, now seen corresponding path program 85 times [2018-07-25 08:45:01,153 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:01,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:01,489 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:01,489 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:01,490 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-07-25 08:45:01,490 INFO L451 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-07-25 08:45:01,491 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-07-25 08:45:01,491 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:45:01,492 INFO L87 Difference]: Start difference. First operand 175 states and 175 transitions. Second operand 88 states. [2018-07-25 08:45:01,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:01,649 INFO L93 Difference]: Finished difference Result 179 states and 179 transitions. [2018-07-25 08:45:01,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-07-25 08:45:01,650 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 174 [2018-07-25 08:45:01,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:01,651 INFO L225 Difference]: With dead ends: 179 [2018-07-25 08:45:01,651 INFO L226 Difference]: Without dead ends: 177 [2018-07-25 08:45:01,652 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:45:01,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-07-25 08:45:01,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-07-25 08:45:01,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-07-25 08:45:01,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 177 transitions. [2018-07-25 08:45:01,658 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 177 transitions. Word has length 174 [2018-07-25 08:45:01,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:01,659 INFO L472 AbstractCegarLoop]: Abstraction has 177 states and 177 transitions. [2018-07-25 08:45:01,659 INFO L473 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-07-25 08:45:01,659 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 177 transitions. [2018-07-25 08:45:01,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-07-25 08:45:01,661 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:01,661 INFO L354 BasicCegarLoop]: trace histogram [87, 86, 1, 1, 1] [2018-07-25 08:45:01,662 INFO L415 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:01,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1448009411, now seen corresponding path program 86 times [2018-07-25 08:45:01,662 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:01,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:02,028 INFO L134 CoverageAnalysis]: Checked inductivity of 7482 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:02,028 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:02,028 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-07-25 08:45:02,029 INFO L451 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-07-25 08:45:02,030 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-07-25 08:45:02,030 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 08:45:02,030 INFO L87 Difference]: Start difference. First operand 177 states and 177 transitions. Second operand 89 states. [2018-07-25 08:45:02,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:02,118 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2018-07-25 08:45:02,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-07-25 08:45:02,118 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 176 [2018-07-25 08:45:02,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:02,120 INFO L225 Difference]: With dead ends: 181 [2018-07-25 08:45:02,120 INFO L226 Difference]: Without dead ends: 179 [2018-07-25 08:45:02,121 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 08:45:02,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-07-25 08:45:02,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-07-25 08:45:02,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-07-25 08:45:02,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2018-07-25 08:45:02,126 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 176 [2018-07-25 08:45:02,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:02,126 INFO L472 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2018-07-25 08:45:02,126 INFO L473 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-07-25 08:45:02,131 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2018-07-25 08:45:02,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-07-25 08:45:02,132 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:02,132 INFO L354 BasicCegarLoop]: trace histogram [88, 87, 1, 1, 1] [2018-07-25 08:45:02,133 INFO L415 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:02,133 INFO L82 PathProgramCache]: Analyzing trace with hash -32307843, now seen corresponding path program 87 times [2018-07-25 08:45:02,133 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:02,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:02,535 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:02,536 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:02,536 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-07-25 08:45:02,536 INFO L451 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-07-25 08:45:02,537 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-07-25 08:45:02,538 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 08:45:02,538 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand 90 states. [2018-07-25 08:45:02,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:02,660 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2018-07-25 08:45:02,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-07-25 08:45:02,660 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 178 [2018-07-25 08:45:02,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:02,662 INFO L225 Difference]: With dead ends: 183 [2018-07-25 08:45:02,662 INFO L226 Difference]: Without dead ends: 181 [2018-07-25 08:45:02,663 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 08:45:02,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-07-25 08:45:02,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-07-25 08:45:02,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-07-25 08:45:02,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 181 transitions. [2018-07-25 08:45:02,668 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 181 transitions. Word has length 178 [2018-07-25 08:45:02,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:02,669 INFO L472 AbstractCegarLoop]: Abstraction has 181 states and 181 transitions. [2018-07-25 08:45:02,669 INFO L473 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-07-25 08:45:02,669 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 181 transitions. [2018-07-25 08:45:02,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-07-25 08:45:02,671 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:02,671 INFO L354 BasicCegarLoop]: trace histogram [89, 88, 1, 1, 1] [2018-07-25 08:45:02,671 INFO L415 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:02,672 INFO L82 PathProgramCache]: Analyzing trace with hash -983013961, now seen corresponding path program 88 times [2018-07-25 08:45:02,672 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:02,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:03,106 INFO L134 CoverageAnalysis]: Checked inductivity of 7832 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:03,107 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:03,107 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2018-07-25 08:45:03,107 INFO L451 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-07-25 08:45:03,108 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-07-25 08:45:03,108 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 08:45:03,109 INFO L87 Difference]: Start difference. First operand 181 states and 181 transitions. Second operand 91 states. [2018-07-25 08:45:03,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:03,224 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2018-07-25 08:45:03,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-07-25 08:45:03,224 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 180 [2018-07-25 08:45:03,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:03,226 INFO L225 Difference]: With dead ends: 185 [2018-07-25 08:45:03,226 INFO L226 Difference]: Without dead ends: 183 [2018-07-25 08:45:03,226 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 08:45:03,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-07-25 08:45:03,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-07-25 08:45:03,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-07-25 08:45:03,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 183 transitions. [2018-07-25 08:45:03,231 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 183 transitions. Word has length 180 [2018-07-25 08:45:03,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:03,232 INFO L472 AbstractCegarLoop]: Abstraction has 183 states and 183 transitions. [2018-07-25 08:45:03,232 INFO L473 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-07-25 08:45:03,232 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 183 transitions. [2018-07-25 08:45:03,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-07-25 08:45:03,233 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:03,233 INFO L354 BasicCegarLoop]: trace histogram [90, 89, 1, 1, 1] [2018-07-25 08:45:03,233 INFO L415 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:03,233 INFO L82 PathProgramCache]: Analyzing trace with hash 216440689, now seen corresponding path program 89 times [2018-07-25 08:45:03,233 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:03,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:03,519 INFO L134 CoverageAnalysis]: Checked inductivity of 8010 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:03,519 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:03,519 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-07-25 08:45:03,520 INFO L451 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-07-25 08:45:03,521 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-07-25 08:45:03,521 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:45:03,522 INFO L87 Difference]: Start difference. First operand 183 states and 183 transitions. Second operand 92 states. [2018-07-25 08:45:03,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:03,632 INFO L93 Difference]: Finished difference Result 187 states and 187 transitions. [2018-07-25 08:45:03,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-07-25 08:45:03,633 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 182 [2018-07-25 08:45:03,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:03,634 INFO L225 Difference]: With dead ends: 187 [2018-07-25 08:45:03,634 INFO L226 Difference]: Without dead ends: 185 [2018-07-25 08:45:03,636 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:45:03,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-07-25 08:45:03,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-07-25 08:45:03,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-07-25 08:45:03,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2018-07-25 08:45:03,645 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 182 [2018-07-25 08:45:03,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:03,645 INFO L472 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2018-07-25 08:45:03,645 INFO L473 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-07-25 08:45:03,645 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2018-07-25 08:45:03,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-07-25 08:45:03,646 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:03,646 INFO L354 BasicCegarLoop]: trace histogram [91, 90, 1, 1, 1] [2018-07-25 08:45:03,647 INFO L415 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:03,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1841124011, now seen corresponding path program 90 times [2018-07-25 08:45:03,647 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:03,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:03,960 INFO L134 CoverageAnalysis]: Checked inductivity of 8190 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:03,960 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:03,960 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2018-07-25 08:45:03,960 INFO L451 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-07-25 08:45:03,961 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-07-25 08:45:03,962 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 08:45:03,962 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand 93 states. [2018-07-25 08:45:04,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:04,078 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2018-07-25 08:45:04,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-07-25 08:45:04,078 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 184 [2018-07-25 08:45:04,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:04,079 INFO L225 Difference]: With dead ends: 189 [2018-07-25 08:45:04,079 INFO L226 Difference]: Without dead ends: 187 [2018-07-25 08:45:04,080 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 08:45:04,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-07-25 08:45:04,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-07-25 08:45:04,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-07-25 08:45:04,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2018-07-25 08:45:04,085 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 184 [2018-07-25 08:45:04,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:04,085 INFO L472 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2018-07-25 08:45:04,085 INFO L473 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-07-25 08:45:04,085 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2018-07-25 08:45:04,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-07-25 08:45:04,086 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:04,086 INFO L354 BasicCegarLoop]: trace histogram [92, 91, 1, 1, 1] [2018-07-25 08:45:04,086 INFO L415 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:04,087 INFO L82 PathProgramCache]: Analyzing trace with hash -206299291, now seen corresponding path program 91 times [2018-07-25 08:45:04,087 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:04,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:04,362 INFO L134 CoverageAnalysis]: Checked inductivity of 8372 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:04,362 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:04,362 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-07-25 08:45:04,363 INFO L451 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-07-25 08:45:04,364 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-07-25 08:45:04,364 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 08:45:04,364 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand 94 states. [2018-07-25 08:45:04,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:04,477 INFO L93 Difference]: Finished difference Result 191 states and 191 transitions. [2018-07-25 08:45:04,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-07-25 08:45:04,477 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 186 [2018-07-25 08:45:04,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:04,478 INFO L225 Difference]: With dead ends: 191 [2018-07-25 08:45:04,478 INFO L226 Difference]: Without dead ends: 189 [2018-07-25 08:45:04,479 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 08:45:04,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-07-25 08:45:04,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-07-25 08:45:04,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-07-25 08:45:04,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 189 transitions. [2018-07-25 08:45:04,484 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 189 transitions. Word has length 186 [2018-07-25 08:45:04,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:04,484 INFO L472 AbstractCegarLoop]: Abstraction has 189 states and 189 transitions. [2018-07-25 08:45:04,484 INFO L473 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-07-25 08:45:04,484 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 189 transitions. [2018-07-25 08:45:04,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-07-25 08:45:04,485 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:04,485 INFO L354 BasicCegarLoop]: trace histogram [93, 92, 1, 1, 1] [2018-07-25 08:45:04,486 INFO L415 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:04,486 INFO L82 PathProgramCache]: Analyzing trace with hash -685070945, now seen corresponding path program 92 times [2018-07-25 08:45:04,486 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:04,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:04,848 INFO L134 CoverageAnalysis]: Checked inductivity of 8556 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:04,848 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:04,848 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2018-07-25 08:45:04,849 INFO L451 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-07-25 08:45:04,849 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-07-25 08:45:04,850 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 08:45:04,850 INFO L87 Difference]: Start difference. First operand 189 states and 189 transitions. Second operand 95 states. [2018-07-25 08:45:04,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:04,909 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2018-07-25 08:45:04,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-07-25 08:45:04,909 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 188 [2018-07-25 08:45:04,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:04,910 INFO L225 Difference]: With dead ends: 193 [2018-07-25 08:45:04,910 INFO L226 Difference]: Without dead ends: 191 [2018-07-25 08:45:04,911 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 08:45:04,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-07-25 08:45:04,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-07-25 08:45:04,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-07-25 08:45:04,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 191 transitions. [2018-07-25 08:45:04,916 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 191 transitions. Word has length 188 [2018-07-25 08:45:04,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:04,916 INFO L472 AbstractCegarLoop]: Abstraction has 191 states and 191 transitions. [2018-07-25 08:45:04,917 INFO L473 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-07-25 08:45:04,917 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 191 transitions. [2018-07-25 08:45:04,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-07-25 08:45:04,918 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:04,918 INFO L354 BasicCegarLoop]: trace histogram [94, 93, 1, 1, 1] [2018-07-25 08:45:04,918 INFO L415 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:04,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1223129767, now seen corresponding path program 93 times [2018-07-25 08:45:04,918 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:04,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:05,308 INFO L134 CoverageAnalysis]: Checked inductivity of 8742 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:05,309 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:05,309 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-07-25 08:45:05,309 INFO L451 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-07-25 08:45:05,313 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-07-25 08:45:05,314 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 08:45:05,315 INFO L87 Difference]: Start difference. First operand 191 states and 191 transitions. Second operand 96 states. [2018-07-25 08:45:05,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:05,416 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-07-25 08:45:05,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-07-25 08:45:05,416 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 190 [2018-07-25 08:45:05,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:05,417 INFO L225 Difference]: With dead ends: 195 [2018-07-25 08:45:05,417 INFO L226 Difference]: Without dead ends: 193 [2018-07-25 08:45:05,418 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 08:45:05,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-07-25 08:45:05,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-07-25 08:45:05,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-07-25 08:45:05,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 193 transitions. [2018-07-25 08:45:05,423 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 193 transitions. Word has length 190 [2018-07-25 08:45:05,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:05,423 INFO L472 AbstractCegarLoop]: Abstraction has 193 states and 193 transitions. [2018-07-25 08:45:05,423 INFO L473 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-07-25 08:45:05,423 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 193 transitions. [2018-07-25 08:45:05,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-07-25 08:45:05,424 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:05,425 INFO L354 BasicCegarLoop]: trace histogram [95, 94, 1, 1, 1] [2018-07-25 08:45:05,425 INFO L415 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:05,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1393385107, now seen corresponding path program 94 times [2018-07-25 08:45:05,425 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:05,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:05,837 INFO L134 CoverageAnalysis]: Checked inductivity of 8930 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:05,838 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:05,838 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96] total 96 [2018-07-25 08:45:05,838 INFO L451 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-07-25 08:45:05,839 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-07-25 08:45:05,840 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 08:45:05,840 INFO L87 Difference]: Start difference. First operand 193 states and 193 transitions. Second operand 97 states. [2018-07-25 08:45:05,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:05,993 INFO L93 Difference]: Finished difference Result 197 states and 197 transitions. [2018-07-25 08:45:05,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-07-25 08:45:05,993 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 192 [2018-07-25 08:45:05,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:05,994 INFO L225 Difference]: With dead ends: 197 [2018-07-25 08:45:05,994 INFO L226 Difference]: Without dead ends: 195 [2018-07-25 08:45:05,995 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 08:45:05,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-07-25 08:45:05,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-07-25 08:45:05,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-07-25 08:45:06,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 195 transitions. [2018-07-25 08:45:06,000 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 195 transitions. Word has length 192 [2018-07-25 08:45:06,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:06,000 INFO L472 AbstractCegarLoop]: Abstraction has 195 states and 195 transitions. [2018-07-25 08:45:06,000 INFO L473 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-07-25 08:45:06,001 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 195 transitions. [2018-07-25 08:45:06,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-07-25 08:45:06,001 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:06,002 INFO L354 BasicCegarLoop]: trace histogram [96, 95, 1, 1, 1] [2018-07-25 08:45:06,002 INFO L415 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:06,002 INFO L82 PathProgramCache]: Analyzing trace with hash -986656435, now seen corresponding path program 95 times [2018-07-25 08:45:06,002 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:06,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:06,277 INFO L134 CoverageAnalysis]: Checked inductivity of 9120 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:06,278 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:06,278 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-07-25 08:45:06,278 INFO L451 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-07-25 08:45:06,279 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-07-25 08:45:06,280 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:45:06,280 INFO L87 Difference]: Start difference. First operand 195 states and 195 transitions. Second operand 98 states. [2018-07-25 08:45:06,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:06,426 INFO L93 Difference]: Finished difference Result 199 states and 199 transitions. [2018-07-25 08:45:06,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-07-25 08:45:06,427 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 194 [2018-07-25 08:45:06,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:06,427 INFO L225 Difference]: With dead ends: 199 [2018-07-25 08:45:06,427 INFO L226 Difference]: Without dead ends: 197 [2018-07-25 08:45:06,428 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:45:06,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-07-25 08:45:06,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-07-25 08:45:06,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-07-25 08:45:06,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 197 transitions. [2018-07-25 08:45:06,432 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 197 transitions. Word has length 194 [2018-07-25 08:45:06,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:06,432 INFO L472 AbstractCegarLoop]: Abstraction has 197 states and 197 transitions. [2018-07-25 08:45:06,432 INFO L473 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-07-25 08:45:06,432 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 197 transitions. [2018-07-25 08:45:06,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-07-25 08:45:06,433 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:06,433 INFO L354 BasicCegarLoop]: trace histogram [97, 96, 1, 1, 1] [2018-07-25 08:45:06,434 INFO L415 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:06,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1010990471, now seen corresponding path program 96 times [2018-07-25 08:45:06,434 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:06,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:06,663 INFO L134 CoverageAnalysis]: Checked inductivity of 9312 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:06,663 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:06,663 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98] total 98 [2018-07-25 08:45:06,664 INFO L451 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-07-25 08:45:06,665 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-07-25 08:45:06,665 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 08:45:06,665 INFO L87 Difference]: Start difference. First operand 197 states and 197 transitions. Second operand 99 states. [2018-07-25 08:45:06,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:06,802 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2018-07-25 08:45:06,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-07-25 08:45:06,802 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 196 [2018-07-25 08:45:06,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:06,803 INFO L225 Difference]: With dead ends: 201 [2018-07-25 08:45:06,803 INFO L226 Difference]: Without dead ends: 199 [2018-07-25 08:45:06,804 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 08:45:06,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-07-25 08:45:06,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-07-25 08:45:06,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-07-25 08:45:06,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 199 transitions. [2018-07-25 08:45:06,808 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 199 transitions. Word has length 196 [2018-07-25 08:45:06,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:06,808 INFO L472 AbstractCegarLoop]: Abstraction has 199 states and 199 transitions. [2018-07-25 08:45:06,808 INFO L473 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-07-25 08:45:06,808 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 199 transitions. [2018-07-25 08:45:06,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-07-25 08:45:06,809 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:06,809 INFO L354 BasicCegarLoop]: trace histogram [98, 97, 1, 1, 1] [2018-07-25 08:45:06,809 INFO L415 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:06,809 INFO L82 PathProgramCache]: Analyzing trace with hash 899285825, now seen corresponding path program 97 times [2018-07-25 08:45:06,810 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:06,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:07,046 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:07,046 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:07,046 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-07-25 08:45:07,046 INFO L451 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-07-25 08:45:07,047 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-07-25 08:45:07,048 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 08:45:07,048 INFO L87 Difference]: Start difference. First operand 199 states and 199 transitions. Second operand 100 states. [2018-07-25 08:45:07,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:07,225 INFO L93 Difference]: Finished difference Result 203 states and 203 transitions. [2018-07-25 08:45:07,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-07-25 08:45:07,225 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 198 [2018-07-25 08:45:07,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:07,227 INFO L225 Difference]: With dead ends: 203 [2018-07-25 08:45:07,227 INFO L226 Difference]: Without dead ends: 201 [2018-07-25 08:45:07,228 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 08:45:07,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-07-25 08:45:07,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-07-25 08:45:07,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-07-25 08:45:07,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 201 transitions. [2018-07-25 08:45:07,232 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 201 transitions. Word has length 198 [2018-07-25 08:45:07,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:07,233 INFO L472 AbstractCegarLoop]: Abstraction has 201 states and 201 transitions. [2018-07-25 08:45:07,233 INFO L473 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-07-25 08:45:07,233 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 201 transitions. [2018-07-25 08:45:07,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-07-25 08:45:07,234 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:07,234 INFO L354 BasicCegarLoop]: trace histogram [99, 98, 1, 1, 1] [2018-07-25 08:45:07,234 INFO L415 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:07,234 INFO L82 PathProgramCache]: Analyzing trace with hash 925303419, now seen corresponding path program 98 times [2018-07-25 08:45:07,235 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:07,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:07,508 INFO L134 CoverageAnalysis]: Checked inductivity of 9702 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:07,508 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:07,508 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100] total 100 [2018-07-25 08:45:07,509 INFO L451 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-07-25 08:45:07,509 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-07-25 08:45:07,510 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 08:45:07,510 INFO L87 Difference]: Start difference. First operand 201 states and 201 transitions. Second operand 101 states. [2018-07-25 08:45:07,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:07,654 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2018-07-25 08:45:07,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-07-25 08:45:07,654 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 200 [2018-07-25 08:45:07,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:07,655 INFO L225 Difference]: With dead ends: 205 [2018-07-25 08:45:07,655 INFO L226 Difference]: Without dead ends: 203 [2018-07-25 08:45:07,656 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 08:45:07,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-07-25 08:45:07,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-07-25 08:45:07,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-07-25 08:45:07,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2018-07-25 08:45:07,661 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 200 [2018-07-25 08:45:07,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:07,661 INFO L472 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2018-07-25 08:45:07,661 INFO L473 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-07-25 08:45:07,661 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2018-07-25 08:45:07,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-07-25 08:45:07,662 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:07,663 INFO L354 BasicCegarLoop]: trace histogram [100, 99, 1, 1, 1] [2018-07-25 08:45:07,663 INFO L415 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:07,663 INFO L82 PathProgramCache]: Analyzing trace with hash 158407477, now seen corresponding path program 99 times [2018-07-25 08:45:07,663 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:07,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:08,015 INFO L134 CoverageAnalysis]: Checked inductivity of 9900 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:08,015 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:08,015 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-07-25 08:45:08,016 INFO L451 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-07-25 08:45:08,016 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-07-25 08:45:08,017 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 08:45:08,017 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand 102 states. [2018-07-25 08:45:08,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:08,168 INFO L93 Difference]: Finished difference Result 207 states and 207 transitions. [2018-07-25 08:45:08,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-07-25 08:45:08,169 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 202 [2018-07-25 08:45:08,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:08,170 INFO L225 Difference]: With dead ends: 207 [2018-07-25 08:45:08,170 INFO L226 Difference]: Without dead ends: 205 [2018-07-25 08:45:08,171 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 08:45:08,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-07-25 08:45:08,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-07-25 08:45:08,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-07-25 08:45:08,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 205 transitions. [2018-07-25 08:45:08,176 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 205 transitions. Word has length 202 [2018-07-25 08:45:08,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:08,176 INFO L472 AbstractCegarLoop]: Abstraction has 205 states and 205 transitions. [2018-07-25 08:45:08,176 INFO L473 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-07-25 08:45:08,176 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 205 transitions. [2018-07-25 08:45:08,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-07-25 08:45:08,177 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:08,177 INFO L354 BasicCegarLoop]: trace histogram [101, 100, 1, 1, 1] [2018-07-25 08:45:08,178 INFO L415 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:08,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1905782127, now seen corresponding path program 100 times [2018-07-25 08:45:08,178 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:08,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:08,473 INFO L134 CoverageAnalysis]: Checked inductivity of 10100 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:08,473 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:08,473 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102] total 102 [2018-07-25 08:45:08,473 INFO L451 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-07-25 08:45:08,474 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-07-25 08:45:08,475 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 08:45:08,475 INFO L87 Difference]: Start difference. First operand 205 states and 205 transitions. Second operand 103 states. [2018-07-25 08:45:08,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:08,548 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2018-07-25 08:45:08,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-07-25 08:45:08,548 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 204 [2018-07-25 08:45:08,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:08,549 INFO L225 Difference]: With dead ends: 209 [2018-07-25 08:45:08,550 INFO L226 Difference]: Without dead ends: 207 [2018-07-25 08:45:08,551 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 08:45:08,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-07-25 08:45:08,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-07-25 08:45:08,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-07-25 08:45:08,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 207 transitions. [2018-07-25 08:45:08,556 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 207 transitions. Word has length 204 [2018-07-25 08:45:08,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:08,556 INFO L472 AbstractCegarLoop]: Abstraction has 207 states and 207 transitions. [2018-07-25 08:45:08,556 INFO L473 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-07-25 08:45:08,556 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 207 transitions. [2018-07-25 08:45:08,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-07-25 08:45:08,557 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:08,557 INFO L354 BasicCegarLoop]: trace histogram [102, 101, 1, 1, 1] [2018-07-25 08:45:08,558 INFO L415 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:08,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1800608041, now seen corresponding path program 101 times [2018-07-25 08:45:08,558 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:08,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:08,822 INFO L134 CoverageAnalysis]: Checked inductivity of 10302 backedges. 0 proven. 10302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:08,822 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:08,822 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-07-25 08:45:08,823 INFO L451 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-07-25 08:45:08,823 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-07-25 08:45:08,824 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:45:08,824 INFO L87 Difference]: Start difference. First operand 207 states and 207 transitions. Second operand 104 states. [2018-07-25 08:45:08,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:08,944 INFO L93 Difference]: Finished difference Result 211 states and 211 transitions. [2018-07-25 08:45:08,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-07-25 08:45:08,945 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 206 [2018-07-25 08:45:08,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:08,946 INFO L225 Difference]: With dead ends: 211 [2018-07-25 08:45:08,946 INFO L226 Difference]: Without dead ends: 209 [2018-07-25 08:45:08,947 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:45:08,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-07-25 08:45:08,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-07-25 08:45:08,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-07-25 08:45:08,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 209 transitions. [2018-07-25 08:45:08,952 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 209 transitions. Word has length 206 [2018-07-25 08:45:08,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:08,952 INFO L472 AbstractCegarLoop]: Abstraction has 209 states and 209 transitions. [2018-07-25 08:45:08,952 INFO L473 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-07-25 08:45:08,952 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 209 transitions. [2018-07-25 08:45:08,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-07-25 08:45:08,953 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:08,954 INFO L354 BasicCegarLoop]: trace histogram [103, 102, 1, 1, 1] [2018-07-25 08:45:08,954 INFO L415 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:08,954 INFO L82 PathProgramCache]: Analyzing trace with hash -487440797, now seen corresponding path program 102 times [2018-07-25 08:45:08,954 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:08,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:09,255 INFO L134 CoverageAnalysis]: Checked inductivity of 10506 backedges. 0 proven. 10506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:09,256 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:09,256 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104] total 104 [2018-07-25 08:45:09,256 INFO L451 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-07-25 08:45:09,257 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-07-25 08:45:09,257 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 08:45:09,258 INFO L87 Difference]: Start difference. First operand 209 states and 209 transitions. Second operand 105 states. [2018-07-25 08:45:09,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:09,421 INFO L93 Difference]: Finished difference Result 213 states and 213 transitions. [2018-07-25 08:45:09,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-07-25 08:45:09,421 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 208 [2018-07-25 08:45:09,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:09,422 INFO L225 Difference]: With dead ends: 213 [2018-07-25 08:45:09,422 INFO L226 Difference]: Without dead ends: 211 [2018-07-25 08:45:09,422 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 08:45:09,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-07-25 08:45:09,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-07-25 08:45:09,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-07-25 08:45:09,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 211 transitions. [2018-07-25 08:45:09,427 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 211 transitions. Word has length 208 [2018-07-25 08:45:09,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:09,427 INFO L472 AbstractCegarLoop]: Abstraction has 211 states and 211 transitions. [2018-07-25 08:45:09,427 INFO L473 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-07-25 08:45:09,427 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 211 transitions. [2018-07-25 08:45:09,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-07-25 08:45:09,428 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:09,428 INFO L354 BasicCegarLoop]: trace histogram [104, 103, 1, 1, 1] [2018-07-25 08:45:09,429 INFO L415 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:09,429 INFO L82 PathProgramCache]: Analyzing trace with hash -279118563, now seen corresponding path program 103 times [2018-07-25 08:45:09,429 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:09,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:09,704 INFO L134 CoverageAnalysis]: Checked inductivity of 10712 backedges. 0 proven. 10712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:09,705 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:09,705 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2018-07-25 08:45:09,705 INFO L451 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-07-25 08:45:09,706 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-07-25 08:45:09,707 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 08:45:09,707 INFO L87 Difference]: Start difference. First operand 211 states and 211 transitions. Second operand 106 states. [2018-07-25 08:45:09,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:09,778 INFO L93 Difference]: Finished difference Result 215 states and 215 transitions. [2018-07-25 08:45:09,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-07-25 08:45:09,778 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 210 [2018-07-25 08:45:09,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:09,779 INFO L225 Difference]: With dead ends: 215 [2018-07-25 08:45:09,779 INFO L226 Difference]: Without dead ends: 213 [2018-07-25 08:45:09,779 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 08:45:09,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-07-25 08:45:09,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2018-07-25 08:45:09,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-07-25 08:45:09,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 213 transitions. [2018-07-25 08:45:09,784 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 213 transitions. Word has length 210 [2018-07-25 08:45:09,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:09,784 INFO L472 AbstractCegarLoop]: Abstraction has 213 states and 213 transitions. [2018-07-25 08:45:09,784 INFO L473 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-07-25 08:45:09,784 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 213 transitions. [2018-07-25 08:45:09,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-07-25 08:45:09,785 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:09,785 INFO L354 BasicCegarLoop]: trace histogram [105, 104, 1, 1, 1] [2018-07-25 08:45:09,785 INFO L415 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:09,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1944914601, now seen corresponding path program 104 times [2018-07-25 08:45:09,786 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:09,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:10,152 INFO L134 CoverageAnalysis]: Checked inductivity of 10920 backedges. 0 proven. 10920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:10,152 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:10,152 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106] total 106 [2018-07-25 08:45:10,153 INFO L451 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-07-25 08:45:10,154 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-07-25 08:45:10,155 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 08:45:10,155 INFO L87 Difference]: Start difference. First operand 213 states and 213 transitions. Second operand 107 states. [2018-07-25 08:45:10,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:10,334 INFO L93 Difference]: Finished difference Result 217 states and 217 transitions. [2018-07-25 08:45:10,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-07-25 08:45:10,334 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 212 [2018-07-25 08:45:10,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:10,335 INFO L225 Difference]: With dead ends: 217 [2018-07-25 08:45:10,335 INFO L226 Difference]: Without dead ends: 215 [2018-07-25 08:45:10,335 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 08:45:10,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-07-25 08:45:10,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-07-25 08:45:10,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-07-25 08:45:10,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 215 transitions. [2018-07-25 08:45:10,338 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 215 transitions. Word has length 212 [2018-07-25 08:45:10,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:10,339 INFO L472 AbstractCegarLoop]: Abstraction has 215 states and 215 transitions. [2018-07-25 08:45:10,339 INFO L473 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-07-25 08:45:10,339 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 215 transitions. [2018-07-25 08:45:10,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-07-25 08:45:10,339 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:10,339 INFO L354 BasicCegarLoop]: trace histogram [106, 105, 1, 1, 1] [2018-07-25 08:45:10,340 INFO L415 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:10,340 INFO L82 PathProgramCache]: Analyzing trace with hash -752105711, now seen corresponding path program 105 times [2018-07-25 08:45:10,340 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:10,643 INFO L134 CoverageAnalysis]: Checked inductivity of 11130 backedges. 0 proven. 11130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:10,644 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:10,644 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2018-07-25 08:45:10,644 INFO L451 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-07-25 08:45:10,645 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-07-25 08:45:10,646 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 08:45:10,646 INFO L87 Difference]: Start difference. First operand 215 states and 215 transitions. Second operand 108 states. [2018-07-25 08:45:10,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:10,774 INFO L93 Difference]: Finished difference Result 219 states and 219 transitions. [2018-07-25 08:45:10,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-07-25 08:45:10,774 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 214 [2018-07-25 08:45:10,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:10,775 INFO L225 Difference]: With dead ends: 219 [2018-07-25 08:45:10,775 INFO L226 Difference]: Without dead ends: 217 [2018-07-25 08:45:10,776 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 08:45:10,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-07-25 08:45:10,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-07-25 08:45:10,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-07-25 08:45:10,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 217 transitions. [2018-07-25 08:45:10,781 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 217 transitions. Word has length 214 [2018-07-25 08:45:10,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:10,781 INFO L472 AbstractCegarLoop]: Abstraction has 217 states and 217 transitions. [2018-07-25 08:45:10,781 INFO L473 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-07-25 08:45:10,781 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 217 transitions. [2018-07-25 08:45:10,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-07-25 08:45:10,782 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:10,782 INFO L354 BasicCegarLoop]: trace histogram [107, 106, 1, 1, 1] [2018-07-25 08:45:10,782 INFO L415 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:10,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1219030453, now seen corresponding path program 106 times [2018-07-25 08:45:10,783 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:10,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:11,088 INFO L134 CoverageAnalysis]: Checked inductivity of 11342 backedges. 0 proven. 11342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:11,089 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:11,089 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108] total 108 [2018-07-25 08:45:11,089 INFO L451 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-07-25 08:45:11,090 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-07-25 08:45:11,090 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 08:45:11,091 INFO L87 Difference]: Start difference. First operand 217 states and 217 transitions. Second operand 109 states. [2018-07-25 08:45:11,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:11,233 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2018-07-25 08:45:11,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-07-25 08:45:11,233 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 216 [2018-07-25 08:45:11,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:11,234 INFO L225 Difference]: With dead ends: 221 [2018-07-25 08:45:11,234 INFO L226 Difference]: Without dead ends: 219 [2018-07-25 08:45:11,235 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 08:45:11,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-07-25 08:45:11,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-07-25 08:45:11,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-07-25 08:45:11,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 219 transitions. [2018-07-25 08:45:11,239 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 219 transitions. Word has length 216 [2018-07-25 08:45:11,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:11,239 INFO L472 AbstractCegarLoop]: Abstraction has 219 states and 219 transitions. [2018-07-25 08:45:11,239 INFO L473 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-07-25 08:45:11,240 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 219 transitions. [2018-07-25 08:45:11,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-07-25 08:45:11,240 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:11,241 INFO L354 BasicCegarLoop]: trace histogram [108, 107, 1, 1, 1] [2018-07-25 08:45:11,241 INFO L415 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:11,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1037858565, now seen corresponding path program 107 times [2018-07-25 08:45:11,241 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:11,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:11,584 INFO L134 CoverageAnalysis]: Checked inductivity of 11556 backedges. 0 proven. 11556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:11,584 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:11,584 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2018-07-25 08:45:11,584 INFO L451 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-07-25 08:45:11,585 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-07-25 08:45:11,586 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 08:45:11,586 INFO L87 Difference]: Start difference. First operand 219 states and 219 transitions. Second operand 110 states. [2018-07-25 08:45:11,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:11,803 INFO L93 Difference]: Finished difference Result 223 states and 223 transitions. [2018-07-25 08:45:11,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-07-25 08:45:11,803 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 218 [2018-07-25 08:45:11,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:11,804 INFO L225 Difference]: With dead ends: 223 [2018-07-25 08:45:11,804 INFO L226 Difference]: Without dead ends: 221 [2018-07-25 08:45:11,805 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 08:45:11,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-07-25 08:45:11,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2018-07-25 08:45:11,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-07-25 08:45:11,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 221 transitions. [2018-07-25 08:45:11,809 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 221 transitions. Word has length 218 [2018-07-25 08:45:11,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:11,810 INFO L472 AbstractCegarLoop]: Abstraction has 221 states and 221 transitions. [2018-07-25 08:45:11,810 INFO L473 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-07-25 08:45:11,810 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 221 transitions. [2018-07-25 08:45:11,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-07-25 08:45:11,810 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:11,811 INFO L354 BasicCegarLoop]: trace histogram [109, 108, 1, 1, 1] [2018-07-25 08:45:11,811 INFO L415 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:11,811 INFO L82 PathProgramCache]: Analyzing trace with hash 949720383, now seen corresponding path program 108 times [2018-07-25 08:45:11,811 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:11,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:12,221 INFO L134 CoverageAnalysis]: Checked inductivity of 11772 backedges. 0 proven. 11772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:12,221 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:12,221 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110] total 110 [2018-07-25 08:45:12,221 INFO L451 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-07-25 08:45:12,223 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-07-25 08:45:12,224 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 08:45:12,224 INFO L87 Difference]: Start difference. First operand 221 states and 221 transitions. Second operand 111 states. [2018-07-25 08:45:12,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:12,406 INFO L93 Difference]: Finished difference Result 225 states and 225 transitions. [2018-07-25 08:45:12,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-07-25 08:45:12,406 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 220 [2018-07-25 08:45:12,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:12,407 INFO L225 Difference]: With dead ends: 225 [2018-07-25 08:45:12,407 INFO L226 Difference]: Without dead ends: 223 [2018-07-25 08:45:12,408 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 08:45:12,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-07-25 08:45:12,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-07-25 08:45:12,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-07-25 08:45:12,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 223 transitions. [2018-07-25 08:45:12,412 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 223 transitions. Word has length 220 [2018-07-25 08:45:12,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:12,412 INFO L472 AbstractCegarLoop]: Abstraction has 223 states and 223 transitions. [2018-07-25 08:45:12,413 INFO L473 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-07-25 08:45:12,413 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 223 transitions. [2018-07-25 08:45:12,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-07-25 08:45:12,414 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:12,414 INFO L354 BasicCegarLoop]: trace histogram [110, 109, 1, 1, 1] [2018-07-25 08:45:12,414 INFO L415 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:12,414 INFO L82 PathProgramCache]: Analyzing trace with hash -2146693895, now seen corresponding path program 109 times [2018-07-25 08:45:12,414 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:12,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:12,769 INFO L134 CoverageAnalysis]: Checked inductivity of 11990 backedges. 0 proven. 11990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:12,769 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:12,769 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111] total 111 [2018-07-25 08:45:12,769 INFO L451 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-07-25 08:45:12,770 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-07-25 08:45:12,771 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 08:45:12,771 INFO L87 Difference]: Start difference. First operand 223 states and 223 transitions. Second operand 112 states. [2018-07-25 08:45:12,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:12,914 INFO L93 Difference]: Finished difference Result 227 states and 227 transitions. [2018-07-25 08:45:12,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-07-25 08:45:12,914 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 222 [2018-07-25 08:45:12,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:12,915 INFO L225 Difference]: With dead ends: 227 [2018-07-25 08:45:12,915 INFO L226 Difference]: Without dead ends: 225 [2018-07-25 08:45:12,916 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 08:45:12,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-07-25 08:45:12,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2018-07-25 08:45:12,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-07-25 08:45:12,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 225 transitions. [2018-07-25 08:45:12,920 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 225 transitions. Word has length 222 [2018-07-25 08:45:12,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:12,920 INFO L472 AbstractCegarLoop]: Abstraction has 225 states and 225 transitions. [2018-07-25 08:45:12,920 INFO L473 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-07-25 08:45:12,921 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 225 transitions. [2018-07-25 08:45:12,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-07-25 08:45:12,921 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:12,922 INFO L354 BasicCegarLoop]: trace histogram [111, 110, 1, 1, 1] [2018-07-25 08:45:12,922 INFO L415 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:12,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1388478925, now seen corresponding path program 110 times [2018-07-25 08:45:12,922 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:12,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:13,414 INFO L134 CoverageAnalysis]: Checked inductivity of 12210 backedges. 0 proven. 12210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:13,414 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:13,414 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112] total 112 [2018-07-25 08:45:13,415 INFO L451 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-07-25 08:45:13,415 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-07-25 08:45:13,416 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 08:45:13,416 INFO L87 Difference]: Start difference. First operand 225 states and 225 transitions. Second operand 113 states. [2018-07-25 08:45:13,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:13,563 INFO L93 Difference]: Finished difference Result 229 states and 229 transitions. [2018-07-25 08:45:13,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-07-25 08:45:13,564 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 224 [2018-07-25 08:45:13,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:13,565 INFO L225 Difference]: With dead ends: 229 [2018-07-25 08:45:13,565 INFO L226 Difference]: Without dead ends: 227 [2018-07-25 08:45:13,566 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 08:45:13,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-07-25 08:45:13,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-07-25 08:45:13,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-07-25 08:45:13,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 227 transitions. [2018-07-25 08:45:13,571 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 227 transitions. Word has length 224 [2018-07-25 08:45:13,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:13,571 INFO L472 AbstractCegarLoop]: Abstraction has 227 states and 227 transitions. [2018-07-25 08:45:13,571 INFO L473 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-07-25 08:45:13,571 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 227 transitions. [2018-07-25 08:45:13,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-07-25 08:45:13,572 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:13,572 INFO L354 BasicCegarLoop]: trace histogram [112, 111, 1, 1, 1] [2018-07-25 08:45:13,573 INFO L415 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:13,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1406634221, now seen corresponding path program 111 times [2018-07-25 08:45:13,573 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:13,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:14,164 INFO L134 CoverageAnalysis]: Checked inductivity of 12432 backedges. 0 proven. 12432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:14,164 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:14,165 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113] total 113 [2018-07-25 08:45:14,165 INFO L451 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-07-25 08:45:14,167 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-07-25 08:45:14,168 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 08:45:14,168 INFO L87 Difference]: Start difference. First operand 227 states and 227 transitions. Second operand 114 states. [2018-07-25 08:45:14,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:14,421 INFO L93 Difference]: Finished difference Result 231 states and 231 transitions. [2018-07-25 08:45:14,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-07-25 08:45:14,422 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 226 [2018-07-25 08:45:14,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:14,422 INFO L225 Difference]: With dead ends: 231 [2018-07-25 08:45:14,422 INFO L226 Difference]: Without dead ends: 229 [2018-07-25 08:45:14,424 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 08:45:14,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-07-25 08:45:14,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2018-07-25 08:45:14,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-07-25 08:45:14,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 229 transitions. [2018-07-25 08:45:14,428 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 229 transitions. Word has length 226 [2018-07-25 08:45:14,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:14,429 INFO L472 AbstractCegarLoop]: Abstraction has 229 states and 229 transitions. [2018-07-25 08:45:14,429 INFO L473 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-07-25 08:45:14,429 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 229 transitions. [2018-07-25 08:45:14,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-07-25 08:45:14,430 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:14,430 INFO L354 BasicCegarLoop]: trace histogram [113, 112, 1, 1, 1] [2018-07-25 08:45:14,430 INFO L415 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:14,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1139159769, now seen corresponding path program 112 times [2018-07-25 08:45:14,430 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:14,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:14,802 INFO L134 CoverageAnalysis]: Checked inductivity of 12656 backedges. 0 proven. 12656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:14,802 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:14,802 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114] total 114 [2018-07-25 08:45:14,803 INFO L451 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-07-25 08:45:14,804 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-07-25 08:45:14,804 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 08:45:14,805 INFO L87 Difference]: Start difference. First operand 229 states and 229 transitions. Second operand 115 states. [2018-07-25 08:45:14,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:14,980 INFO L93 Difference]: Finished difference Result 233 states and 233 transitions. [2018-07-25 08:45:14,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-07-25 08:45:14,980 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 228 [2018-07-25 08:45:14,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:14,980 INFO L225 Difference]: With dead ends: 233 [2018-07-25 08:45:14,981 INFO L226 Difference]: Without dead ends: 231 [2018-07-25 08:45:14,982 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 08:45:14,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-07-25 08:45:14,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2018-07-25 08:45:14,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-07-25 08:45:14,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 231 transitions. [2018-07-25 08:45:14,986 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 231 transitions. Word has length 228 [2018-07-25 08:45:14,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:14,987 INFO L472 AbstractCegarLoop]: Abstraction has 231 states and 231 transitions. [2018-07-25 08:45:14,987 INFO L473 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-07-25 08:45:14,987 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 231 transitions. [2018-07-25 08:45:14,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-07-25 08:45:14,988 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:14,988 INFO L354 BasicCegarLoop]: trace histogram [114, 113, 1, 1, 1] [2018-07-25 08:45:14,988 INFO L415 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:14,988 INFO L82 PathProgramCache]: Analyzing trace with hash 484174561, now seen corresponding path program 113 times [2018-07-25 08:45:14,988 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:15,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:15,382 INFO L134 CoverageAnalysis]: Checked inductivity of 12882 backedges. 0 proven. 12882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:15,382 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:15,382 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115] total 115 [2018-07-25 08:45:15,382 INFO L451 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-07-25 08:45:15,384 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-07-25 08:45:15,384 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 08:45:15,384 INFO L87 Difference]: Start difference. First operand 231 states and 231 transitions. Second operand 116 states. [2018-07-25 08:45:15,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:15,606 INFO L93 Difference]: Finished difference Result 235 states and 235 transitions. [2018-07-25 08:45:15,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-07-25 08:45:15,607 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 230 [2018-07-25 08:45:15,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:15,607 INFO L225 Difference]: With dead ends: 235 [2018-07-25 08:45:15,608 INFO L226 Difference]: Without dead ends: 233 [2018-07-25 08:45:15,609 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 08:45:15,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-07-25 08:45:15,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2018-07-25 08:45:15,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-07-25 08:45:15,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 233 transitions. [2018-07-25 08:45:15,614 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 233 transitions. Word has length 230 [2018-07-25 08:45:15,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:15,614 INFO L472 AbstractCegarLoop]: Abstraction has 233 states and 233 transitions. [2018-07-25 08:45:15,614 INFO L473 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-07-25 08:45:15,614 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 233 transitions. [2018-07-25 08:45:15,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-07-25 08:45:15,615 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:15,615 INFO L354 BasicCegarLoop]: trace histogram [115, 114, 1, 1, 1] [2018-07-25 08:45:15,616 INFO L415 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:15,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1435337243, now seen corresponding path program 114 times [2018-07-25 08:45:15,616 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:15,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:16,007 INFO L134 CoverageAnalysis]: Checked inductivity of 13110 backedges. 0 proven. 13110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:16,008 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:16,008 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116] total 116 [2018-07-25 08:45:16,008 INFO L451 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-07-25 08:45:16,009 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-07-25 08:45:16,010 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 08:45:16,011 INFO L87 Difference]: Start difference. First operand 233 states and 233 transitions. Second operand 117 states. [2018-07-25 08:45:16,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:16,278 INFO L93 Difference]: Finished difference Result 237 states and 237 transitions. [2018-07-25 08:45:16,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-07-25 08:45:16,278 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 232 [2018-07-25 08:45:16,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:16,279 INFO L225 Difference]: With dead ends: 237 [2018-07-25 08:45:16,279 INFO L226 Difference]: Without dead ends: 235 [2018-07-25 08:45:16,280 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 08:45:16,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-07-25 08:45:16,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-07-25 08:45:16,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-07-25 08:45:16,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 235 transitions. [2018-07-25 08:45:16,285 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 235 transitions. Word has length 232 [2018-07-25 08:45:16,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:16,285 INFO L472 AbstractCegarLoop]: Abstraction has 235 states and 235 transitions. [2018-07-25 08:45:16,286 INFO L473 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-07-25 08:45:16,286 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 235 transitions. [2018-07-25 08:45:16,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-07-25 08:45:16,287 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:16,287 INFO L354 BasicCegarLoop]: trace histogram [116, 115, 1, 1, 1] [2018-07-25 08:45:16,287 INFO L415 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:16,287 INFO L82 PathProgramCache]: Analyzing trace with hash 674640597, now seen corresponding path program 115 times [2018-07-25 08:45:16,287 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:16,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:16,669 INFO L134 CoverageAnalysis]: Checked inductivity of 13340 backedges. 0 proven. 13340 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:16,669 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:16,670 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117] total 117 [2018-07-25 08:45:16,670 INFO L451 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-07-25 08:45:16,671 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-07-25 08:45:16,672 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 08:45:16,672 INFO L87 Difference]: Start difference. First operand 235 states and 235 transitions. Second operand 118 states. [2018-07-25 08:45:16,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:16,855 INFO L93 Difference]: Finished difference Result 239 states and 239 transitions. [2018-07-25 08:45:16,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-07-25 08:45:16,855 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 234 [2018-07-25 08:45:16,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:16,856 INFO L225 Difference]: With dead ends: 239 [2018-07-25 08:45:16,856 INFO L226 Difference]: Without dead ends: 237 [2018-07-25 08:45:16,857 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 08:45:16,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-07-25 08:45:16,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2018-07-25 08:45:16,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-07-25 08:45:16,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 237 transitions. [2018-07-25 08:45:16,861 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 237 transitions. Word has length 234 [2018-07-25 08:45:16,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:16,861 INFO L472 AbstractCegarLoop]: Abstraction has 237 states and 237 transitions. [2018-07-25 08:45:16,861 INFO L473 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-07-25 08:45:16,861 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 237 transitions. [2018-07-25 08:45:16,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-07-25 08:45:16,862 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:16,862 INFO L354 BasicCegarLoop]: trace histogram [117, 116, 1, 1, 1] [2018-07-25 08:45:16,862 INFO L415 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:16,862 INFO L82 PathProgramCache]: Analyzing trace with hash -210395889, now seen corresponding path program 116 times [2018-07-25 08:45:16,862 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:16,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:17,219 INFO L134 CoverageAnalysis]: Checked inductivity of 13572 backedges. 0 proven. 13572 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:17,220 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:17,220 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118] total 118 [2018-07-25 08:45:17,220 INFO L451 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-07-25 08:45:17,221 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-07-25 08:45:17,222 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 08:45:17,222 INFO L87 Difference]: Start difference. First operand 237 states and 237 transitions. Second operand 119 states. [2018-07-25 08:45:17,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:17,451 INFO L93 Difference]: Finished difference Result 241 states and 241 transitions. [2018-07-25 08:45:17,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-07-25 08:45:17,451 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 236 [2018-07-25 08:45:17,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:17,452 INFO L225 Difference]: With dead ends: 241 [2018-07-25 08:45:17,452 INFO L226 Difference]: Without dead ends: 239 [2018-07-25 08:45:17,453 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 08:45:17,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-07-25 08:45:17,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2018-07-25 08:45:17,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-07-25 08:45:17,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2018-07-25 08:45:17,458 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 236 [2018-07-25 08:45:17,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:17,458 INFO L472 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2018-07-25 08:45:17,458 INFO L473 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-07-25 08:45:17,458 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2018-07-25 08:45:17,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-07-25 08:45:17,459 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:17,459 INFO L354 BasicCegarLoop]: trace histogram [118, 117, 1, 1, 1] [2018-07-25 08:45:17,460 INFO L415 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:17,460 INFO L82 PathProgramCache]: Analyzing trace with hash -326934327, now seen corresponding path program 117 times [2018-07-25 08:45:17,460 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:17,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:17,848 INFO L134 CoverageAnalysis]: Checked inductivity of 13806 backedges. 0 proven. 13806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:17,848 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:17,849 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119] total 119 [2018-07-25 08:45:17,849 INFO L451 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-07-25 08:45:17,850 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-07-25 08:45:17,851 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 08:45:17,851 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand 120 states. [2018-07-25 08:45:18,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:18,018 INFO L93 Difference]: Finished difference Result 243 states and 243 transitions. [2018-07-25 08:45:18,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-07-25 08:45:18,019 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 238 [2018-07-25 08:45:18,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:18,019 INFO L225 Difference]: With dead ends: 243 [2018-07-25 08:45:18,020 INFO L226 Difference]: Without dead ends: 241 [2018-07-25 08:45:18,021 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 08:45:18,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-07-25 08:45:18,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2018-07-25 08:45:18,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-07-25 08:45:18,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 241 transitions. [2018-07-25 08:45:18,026 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 241 transitions. Word has length 238 [2018-07-25 08:45:18,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:18,026 INFO L472 AbstractCegarLoop]: Abstraction has 241 states and 241 transitions. [2018-07-25 08:45:18,026 INFO L473 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-07-25 08:45:18,026 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 241 transitions. [2018-07-25 08:45:18,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-07-25 08:45:18,027 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:18,028 INFO L354 BasicCegarLoop]: trace histogram [119, 118, 1, 1, 1] [2018-07-25 08:45:18,028 INFO L415 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:18,028 INFO L82 PathProgramCache]: Analyzing trace with hash -651223549, now seen corresponding path program 118 times [2018-07-25 08:45:18,028 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:18,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:18,430 INFO L134 CoverageAnalysis]: Checked inductivity of 14042 backedges. 0 proven. 14042 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:18,431 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:18,431 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120] total 120 [2018-07-25 08:45:18,431 INFO L451 AbstractCegarLoop]: Interpolant automaton has 121 states [2018-07-25 08:45:18,432 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2018-07-25 08:45:18,433 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2018-07-25 08:45:18,433 INFO L87 Difference]: Start difference. First operand 241 states and 241 transitions. Second operand 121 states. [2018-07-25 08:45:18,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:18,605 INFO L93 Difference]: Finished difference Result 245 states and 245 transitions. [2018-07-25 08:45:18,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-07-25 08:45:18,605 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 240 [2018-07-25 08:45:18,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:18,606 INFO L225 Difference]: With dead ends: 245 [2018-07-25 08:45:18,606 INFO L226 Difference]: Without dead ends: 243 [2018-07-25 08:45:18,607 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2018-07-25 08:45:18,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-07-25 08:45:18,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2018-07-25 08:45:18,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-07-25 08:45:18,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 243 transitions. [2018-07-25 08:45:18,612 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 243 transitions. Word has length 240 [2018-07-25 08:45:18,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:18,612 INFO L472 AbstractCegarLoop]: Abstraction has 243 states and 243 transitions. [2018-07-25 08:45:18,613 INFO L473 AbstractCegarLoop]: Interpolant automaton has 121 states. [2018-07-25 08:45:18,613 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 243 transitions. [2018-07-25 08:45:18,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-07-25 08:45:18,614 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:18,614 INFO L354 BasicCegarLoop]: trace histogram [120, 119, 1, 1, 1] [2018-07-25 08:45:18,614 INFO L415 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:18,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1239446717, now seen corresponding path program 119 times [2018-07-25 08:45:18,614 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:18,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:19,031 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 14280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:19,031 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:19,031 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121] total 121 [2018-07-25 08:45:19,032 INFO L451 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-07-25 08:45:19,033 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-07-25 08:45:19,034 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 08:45:19,034 INFO L87 Difference]: Start difference. First operand 243 states and 243 transitions. Second operand 122 states. [2018-07-25 08:45:19,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:19,305 INFO L93 Difference]: Finished difference Result 247 states and 247 transitions. [2018-07-25 08:45:19,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-07-25 08:45:19,305 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 242 [2018-07-25 08:45:19,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:19,306 INFO L225 Difference]: With dead ends: 247 [2018-07-25 08:45:19,307 INFO L226 Difference]: Without dead ends: 245 [2018-07-25 08:45:19,309 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 08:45:19,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-07-25 08:45:19,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2018-07-25 08:45:19,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-07-25 08:45:19,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 245 transitions. [2018-07-25 08:45:19,315 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 245 transitions. Word has length 242 [2018-07-25 08:45:19,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:19,316 INFO L472 AbstractCegarLoop]: Abstraction has 245 states and 245 transitions. [2018-07-25 08:45:19,316 INFO L473 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-07-25 08:45:19,316 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 245 transitions. [2018-07-25 08:45:19,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-07-25 08:45:19,317 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:19,318 INFO L354 BasicCegarLoop]: trace histogram [121, 120, 1, 1, 1] [2018-07-25 08:45:19,318 INFO L415 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:19,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1402406135, now seen corresponding path program 120 times [2018-07-25 08:45:19,318 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:19,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:19,853 INFO L134 CoverageAnalysis]: Checked inductivity of 14520 backedges. 0 proven. 14520 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:19,854 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:19,854 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [122] total 122 [2018-07-25 08:45:19,854 INFO L451 AbstractCegarLoop]: Interpolant automaton has 123 states [2018-07-25 08:45:19,855 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2018-07-25 08:45:19,856 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2018-07-25 08:45:19,856 INFO L87 Difference]: Start difference. First operand 245 states and 245 transitions. Second operand 123 states. [2018-07-25 08:45:20,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:20,185 INFO L93 Difference]: Finished difference Result 249 states and 249 transitions. [2018-07-25 08:45:20,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-07-25 08:45:20,185 INFO L78 Accepts]: Start accepts. Automaton has 123 states. Word has length 244 [2018-07-25 08:45:20,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:20,186 INFO L225 Difference]: With dead ends: 249 [2018-07-25 08:45:20,186 INFO L226 Difference]: Without dead ends: 247 [2018-07-25 08:45:20,187 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2018-07-25 08:45:20,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-07-25 08:45:20,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2018-07-25 08:45:20,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-07-25 08:45:20,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 247 transitions. [2018-07-25 08:45:20,190 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 247 transitions. Word has length 244 [2018-07-25 08:45:20,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:20,191 INFO L472 AbstractCegarLoop]: Abstraction has 247 states and 247 transitions. [2018-07-25 08:45:20,191 INFO L473 AbstractCegarLoop]: Interpolant automaton has 123 states. [2018-07-25 08:45:20,191 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 247 transitions. [2018-07-25 08:45:20,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-07-25 08:45:20,191 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:20,192 INFO L354 BasicCegarLoop]: trace histogram [122, 121, 1, 1, 1] [2018-07-25 08:45:20,192 INFO L415 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:20,192 INFO L82 PathProgramCache]: Analyzing trace with hash -907383119, now seen corresponding path program 121 times [2018-07-25 08:45:20,192 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:20,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:20,606 INFO L134 CoverageAnalysis]: Checked inductivity of 14762 backedges. 0 proven. 14762 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:20,606 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:20,606 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123] total 123 [2018-07-25 08:45:20,606 INFO L451 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-07-25 08:45:20,607 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-07-25 08:45:20,608 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 08:45:20,608 INFO L87 Difference]: Start difference. First operand 247 states and 247 transitions. Second operand 124 states. [2018-07-25 08:45:20,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:20,776 INFO L93 Difference]: Finished difference Result 251 states and 251 transitions. [2018-07-25 08:45:20,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-07-25 08:45:20,776 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 246 [2018-07-25 08:45:20,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:20,776 INFO L225 Difference]: With dead ends: 251 [2018-07-25 08:45:20,776 INFO L226 Difference]: Without dead ends: 249 [2018-07-25 08:45:20,778 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 08:45:20,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2018-07-25 08:45:20,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2018-07-25 08:45:20,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-07-25 08:45:20,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 249 transitions. [2018-07-25 08:45:20,783 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 249 transitions. Word has length 246 [2018-07-25 08:45:20,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:20,783 INFO L472 AbstractCegarLoop]: Abstraction has 249 states and 249 transitions. [2018-07-25 08:45:20,783 INFO L473 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-07-25 08:45:20,783 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 249 transitions. [2018-07-25 08:45:20,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-07-25 08:45:20,784 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:20,784 INFO L354 BasicCegarLoop]: trace histogram [123, 122, 1, 1, 1] [2018-07-25 08:45:20,785 INFO L415 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:20,785 INFO L82 PathProgramCache]: Analyzing trace with hash -116764181, now seen corresponding path program 122 times [2018-07-25 08:45:20,785 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:20,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:21,243 INFO L134 CoverageAnalysis]: Checked inductivity of 15006 backedges. 0 proven. 15006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:21,243 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:21,244 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [124] total 124 [2018-07-25 08:45:21,244 INFO L451 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-07-25 08:45:21,245 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-07-25 08:45:21,247 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2018-07-25 08:45:21,247 INFO L87 Difference]: Start difference. First operand 249 states and 249 transitions. Second operand 125 states. [2018-07-25 08:45:21,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:21,505 INFO L93 Difference]: Finished difference Result 253 states and 253 transitions. [2018-07-25 08:45:21,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-07-25 08:45:21,505 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 248 [2018-07-25 08:45:21,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:21,505 INFO L225 Difference]: With dead ends: 253 [2018-07-25 08:45:21,505 INFO L226 Difference]: Without dead ends: 251 [2018-07-25 08:45:21,507 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2018-07-25 08:45:21,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-07-25 08:45:21,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2018-07-25 08:45:21,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-07-25 08:45:21,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 251 transitions. [2018-07-25 08:45:21,512 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 251 transitions. Word has length 248 [2018-07-25 08:45:21,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:21,513 INFO L472 AbstractCegarLoop]: Abstraction has 251 states and 251 transitions. [2018-07-25 08:45:21,513 INFO L473 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-07-25 08:45:21,513 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 251 transitions. [2018-07-25 08:45:21,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-07-25 08:45:21,514 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:21,514 INFO L354 BasicCegarLoop]: trace histogram [124, 123, 1, 1, 1] [2018-07-25 08:45:21,514 INFO L415 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:21,515 INFO L82 PathProgramCache]: Analyzing trace with hash -541176155, now seen corresponding path program 123 times [2018-07-25 08:45:21,515 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:21,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:22,005 INFO L134 CoverageAnalysis]: Checked inductivity of 15252 backedges. 0 proven. 15252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:22,005 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:22,005 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125] total 125 [2018-07-25 08:45:22,006 INFO L451 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-07-25 08:45:22,007 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-07-25 08:45:22,007 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7875, Invalid=7875, Unknown=0, NotChecked=0, Total=15750 [2018-07-25 08:45:22,008 INFO L87 Difference]: Start difference. First operand 251 states and 251 transitions. Second operand 126 states. [2018-07-25 08:45:22,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:22,161 INFO L93 Difference]: Finished difference Result 255 states and 255 transitions. [2018-07-25 08:45:22,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-07-25 08:45:22,161 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 250 [2018-07-25 08:45:22,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:22,162 INFO L225 Difference]: With dead ends: 255 [2018-07-25 08:45:22,162 INFO L226 Difference]: Without dead ends: 253 [2018-07-25 08:45:22,164 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7875, Invalid=7875, Unknown=0, NotChecked=0, Total=15750 [2018-07-25 08:45:22,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-07-25 08:45:22,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2018-07-25 08:45:22,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-07-25 08:45:22,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 253 transitions. [2018-07-25 08:45:22,168 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 253 transitions. Word has length 250 [2018-07-25 08:45:22,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:22,168 INFO L472 AbstractCegarLoop]: Abstraction has 253 states and 253 transitions. [2018-07-25 08:45:22,168 INFO L473 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-07-25 08:45:22,169 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 253 transitions. [2018-07-25 08:45:22,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-07-25 08:45:22,170 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:22,170 INFO L354 BasicCegarLoop]: trace histogram [125, 124, 1, 1, 1] [2018-07-25 08:45:22,170 INFO L415 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:22,170 INFO L82 PathProgramCache]: Analyzing trace with hash -379190049, now seen corresponding path program 124 times [2018-07-25 08:45:22,170 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:22,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:22,675 INFO L134 CoverageAnalysis]: Checked inductivity of 15500 backedges. 0 proven. 15500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:22,676 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:22,676 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [126] total 126 [2018-07-25 08:45:22,676 INFO L451 AbstractCegarLoop]: Interpolant automaton has 127 states [2018-07-25 08:45:22,677 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2018-07-25 08:45:22,678 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2018-07-25 08:45:22,678 INFO L87 Difference]: Start difference. First operand 253 states and 253 transitions. Second operand 127 states. [2018-07-25 08:45:23,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:23,011 INFO L93 Difference]: Finished difference Result 257 states and 257 transitions. [2018-07-25 08:45:23,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-07-25 08:45:23,011 INFO L78 Accepts]: Start accepts. Automaton has 127 states. Word has length 252 [2018-07-25 08:45:23,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:23,011 INFO L225 Difference]: With dead ends: 257 [2018-07-25 08:45:23,011 INFO L226 Difference]: Without dead ends: 255 [2018-07-25 08:45:23,013 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2018-07-25 08:45:23,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-07-25 08:45:23,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2018-07-25 08:45:23,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-07-25 08:45:23,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 255 transitions. [2018-07-25 08:45:23,016 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 255 transitions. Word has length 252 [2018-07-25 08:45:23,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:23,016 INFO L472 AbstractCegarLoop]: Abstraction has 255 states and 255 transitions. [2018-07-25 08:45:23,016 INFO L473 AbstractCegarLoop]: Interpolant automaton has 127 states. [2018-07-25 08:45:23,016 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 255 transitions. [2018-07-25 08:45:23,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-07-25 08:45:23,017 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:23,017 INFO L354 BasicCegarLoop]: trace histogram [126, 125, 1, 1, 1] [2018-07-25 08:45:23,017 INFO L415 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:23,017 INFO L82 PathProgramCache]: Analyzing trace with hash 670635161, now seen corresponding path program 125 times [2018-07-25 08:45:23,018 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:23,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:23,464 INFO L134 CoverageAnalysis]: Checked inductivity of 15750 backedges. 0 proven. 15750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:23,464 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:23,464 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127] total 127 [2018-07-25 08:45:23,464 INFO L451 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-07-25 08:45:23,466 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-07-25 08:45:23,466 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 08:45:23,467 INFO L87 Difference]: Start difference. First operand 255 states and 255 transitions. Second operand 128 states. [2018-07-25 08:45:23,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:23,650 INFO L93 Difference]: Finished difference Result 259 states and 259 transitions. [2018-07-25 08:45:23,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-07-25 08:45:23,650 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 254 [2018-07-25 08:45:23,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:23,650 INFO L225 Difference]: With dead ends: 259 [2018-07-25 08:45:23,650 INFO L226 Difference]: Without dead ends: 257 [2018-07-25 08:45:23,652 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 08:45:23,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2018-07-25 08:45:23,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2018-07-25 08:45:23,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2018-07-25 08:45:23,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 257 transitions. [2018-07-25 08:45:23,657 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 257 transitions. Word has length 254 [2018-07-25 08:45:23,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:23,657 INFO L472 AbstractCegarLoop]: Abstraction has 257 states and 257 transitions. [2018-07-25 08:45:23,657 INFO L473 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-07-25 08:45:23,657 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 257 transitions. [2018-07-25 08:45:23,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-07-25 08:45:23,658 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:23,658 INFO L354 BasicCegarLoop]: trace histogram [127, 126, 1, 1, 1] [2018-07-25 08:45:23,659 INFO L415 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:23,659 INFO L82 PathProgramCache]: Analyzing trace with hash 235347411, now seen corresponding path program 126 times [2018-07-25 08:45:23,659 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:23,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:24,116 INFO L134 CoverageAnalysis]: Checked inductivity of 16002 backedges. 0 proven. 16002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:24,116 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:24,117 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [128] total 128 [2018-07-25 08:45:24,117 INFO L451 AbstractCegarLoop]: Interpolant automaton has 129 states [2018-07-25 08:45:24,119 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2018-07-25 08:45:24,120 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2018-07-25 08:45:24,120 INFO L87 Difference]: Start difference. First operand 257 states and 257 transitions. Second operand 129 states. [2018-07-25 08:45:24,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:24,471 INFO L93 Difference]: Finished difference Result 261 states and 261 transitions. [2018-07-25 08:45:24,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-07-25 08:45:24,471 INFO L78 Accepts]: Start accepts. Automaton has 129 states. Word has length 256 [2018-07-25 08:45:24,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:24,472 INFO L225 Difference]: With dead ends: 261 [2018-07-25 08:45:24,472 INFO L226 Difference]: Without dead ends: 259 [2018-07-25 08:45:24,473 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2018-07-25 08:45:24,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-07-25 08:45:24,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2018-07-25 08:45:24,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-07-25 08:45:24,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 259 transitions. [2018-07-25 08:45:24,478 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 259 transitions. Word has length 256 [2018-07-25 08:45:24,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:24,478 INFO L472 AbstractCegarLoop]: Abstraction has 259 states and 259 transitions. [2018-07-25 08:45:24,479 INFO L473 AbstractCegarLoop]: Interpolant automaton has 129 states. [2018-07-25 08:45:24,479 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 259 transitions. [2018-07-25 08:45:24,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-07-25 08:45:24,480 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:24,480 INFO L354 BasicCegarLoop]: trace histogram [128, 127, 1, 1, 1] [2018-07-25 08:45:24,480 INFO L415 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:24,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1464352627, now seen corresponding path program 127 times [2018-07-25 08:45:24,480 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:24,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:25,165 INFO L134 CoverageAnalysis]: Checked inductivity of 16256 backedges. 0 proven. 16256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:25,165 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:25,166 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129] total 129 [2018-07-25 08:45:25,166 INFO L451 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-07-25 08:45:25,173 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-07-25 08:45:25,175 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8385, Invalid=8385, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 08:45:25,175 INFO L87 Difference]: Start difference. First operand 259 states and 259 transitions. Second operand 130 states. [2018-07-25 08:45:25,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:25,401 INFO L93 Difference]: Finished difference Result 263 states and 263 transitions. [2018-07-25 08:45:25,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-07-25 08:45:25,402 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 258 [2018-07-25 08:45:25,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:25,403 INFO L225 Difference]: With dead ends: 263 [2018-07-25 08:45:25,403 INFO L226 Difference]: Without dead ends: 261 [2018-07-25 08:45:25,406 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=8385, Invalid=8385, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 08:45:25,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2018-07-25 08:45:25,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2018-07-25 08:45:25,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2018-07-25 08:45:25,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 261 transitions. [2018-07-25 08:45:25,415 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 261 transitions. Word has length 258 [2018-07-25 08:45:25,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:25,415 INFO L472 AbstractCegarLoop]: Abstraction has 261 states and 261 transitions. [2018-07-25 08:45:25,415 INFO L473 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-07-25 08:45:25,415 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 261 transitions. [2018-07-25 08:45:25,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-07-25 08:45:25,418 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:25,418 INFO L354 BasicCegarLoop]: trace histogram [129, 128, 1, 1, 1] [2018-07-25 08:45:25,418 INFO L415 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:25,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1506450631, now seen corresponding path program 128 times [2018-07-25 08:45:25,419 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:25,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:25,907 INFO L134 CoverageAnalysis]: Checked inductivity of 16512 backedges. 0 proven. 16512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:25,908 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:25,908 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [130] total 130 [2018-07-25 08:45:25,908 INFO L451 AbstractCegarLoop]: Interpolant automaton has 131 states [2018-07-25 08:45:25,910 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2018-07-25 08:45:25,910 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8515, Invalid=8515, Unknown=0, NotChecked=0, Total=17030 [2018-07-25 08:45:25,911 INFO L87 Difference]: Start difference. First operand 261 states and 261 transitions. Second operand 131 states. [2018-07-25 08:45:26,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:26,199 INFO L93 Difference]: Finished difference Result 265 states and 265 transitions. [2018-07-25 08:45:26,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-07-25 08:45:26,199 INFO L78 Accepts]: Start accepts. Automaton has 131 states. Word has length 260 [2018-07-25 08:45:26,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:26,200 INFO L225 Difference]: With dead ends: 265 [2018-07-25 08:45:26,200 INFO L226 Difference]: Without dead ends: 263 [2018-07-25 08:45:26,202 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8515, Invalid=8515, Unknown=0, NotChecked=0, Total=17030 [2018-07-25 08:45:26,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-07-25 08:45:26,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2018-07-25 08:45:26,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2018-07-25 08:45:26,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 263 transitions. [2018-07-25 08:45:26,205 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 263 transitions. Word has length 260 [2018-07-25 08:45:26,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:26,205 INFO L472 AbstractCegarLoop]: Abstraction has 263 states and 263 transitions. [2018-07-25 08:45:26,205 INFO L473 AbstractCegarLoop]: Interpolant automaton has 131 states. [2018-07-25 08:45:26,205 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 263 transitions. [2018-07-25 08:45:26,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-07-25 08:45:26,206 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:26,207 INFO L354 BasicCegarLoop]: trace histogram [130, 129, 1, 1, 1] [2018-07-25 08:45:26,207 INFO L415 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:26,207 INFO L82 PathProgramCache]: Analyzing trace with hash 295129729, now seen corresponding path program 129 times [2018-07-25 08:45:26,207 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:26,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:26,838 INFO L134 CoverageAnalysis]: Checked inductivity of 16770 backedges. 0 proven. 16770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:26,839 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:26,839 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131] total 131 [2018-07-25 08:45:26,839 INFO L451 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-07-25 08:45:26,840 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-07-25 08:45:26,840 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8646, Invalid=8646, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 08:45:26,840 INFO L87 Difference]: Start difference. First operand 263 states and 263 transitions. Second operand 132 states. [2018-07-25 08:45:27,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:27,158 INFO L93 Difference]: Finished difference Result 267 states and 267 transitions. [2018-07-25 08:45:27,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-07-25 08:45:27,158 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 262 [2018-07-25 08:45:27,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:27,158 INFO L225 Difference]: With dead ends: 267 [2018-07-25 08:45:27,159 INFO L226 Difference]: Without dead ends: 265 [2018-07-25 08:45:27,159 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=8646, Invalid=8646, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 08:45:27,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2018-07-25 08:45:27,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2018-07-25 08:45:27,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2018-07-25 08:45:27,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 265 transitions. [2018-07-25 08:45:27,163 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 265 transitions. Word has length 262 [2018-07-25 08:45:27,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:27,164 INFO L472 AbstractCegarLoop]: Abstraction has 265 states and 265 transitions. [2018-07-25 08:45:27,164 INFO L473 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-07-25 08:45:27,164 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 265 transitions. [2018-07-25 08:45:27,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-07-25 08:45:27,165 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:27,165 INFO L354 BasicCegarLoop]: trace histogram [131, 130, 1, 1, 1] [2018-07-25 08:45:27,166 INFO L415 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:27,166 INFO L82 PathProgramCache]: Analyzing trace with hash 151880123, now seen corresponding path program 130 times [2018-07-25 08:45:27,166 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:27,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:27,618 INFO L134 CoverageAnalysis]: Checked inductivity of 17030 backedges. 0 proven. 17030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:27,618 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:27,618 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [132] total 132 [2018-07-25 08:45:27,618 INFO L451 AbstractCegarLoop]: Interpolant automaton has 133 states [2018-07-25 08:45:27,620 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2018-07-25 08:45:27,621 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8778, Invalid=8778, Unknown=0, NotChecked=0, Total=17556 [2018-07-25 08:45:27,621 INFO L87 Difference]: Start difference. First operand 265 states and 265 transitions. Second operand 133 states. [2018-07-25 08:45:27,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:27,803 INFO L93 Difference]: Finished difference Result 269 states and 269 transitions. [2018-07-25 08:45:27,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-07-25 08:45:27,804 INFO L78 Accepts]: Start accepts. Automaton has 133 states. Word has length 264 [2018-07-25 08:45:27,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:27,804 INFO L225 Difference]: With dead ends: 269 [2018-07-25 08:45:27,804 INFO L226 Difference]: Without dead ends: 267 [2018-07-25 08:45:27,806 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8778, Invalid=8778, Unknown=0, NotChecked=0, Total=17556 [2018-07-25 08:45:27,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-07-25 08:45:27,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2018-07-25 08:45:27,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2018-07-25 08:45:27,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 267 transitions. [2018-07-25 08:45:27,811 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 267 transitions. Word has length 264 [2018-07-25 08:45:27,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:27,811 INFO L472 AbstractCegarLoop]: Abstraction has 267 states and 267 transitions. [2018-07-25 08:45:27,811 INFO L473 AbstractCegarLoop]: Interpolant automaton has 133 states. [2018-07-25 08:45:27,812 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 267 transitions. [2018-07-25 08:45:27,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-07-25 08:45:27,813 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:27,813 INFO L354 BasicCegarLoop]: trace histogram [132, 131, 1, 1, 1] [2018-07-25 08:45:27,813 INFO L415 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:27,813 INFO L82 PathProgramCache]: Analyzing trace with hash -72037771, now seen corresponding path program 131 times [2018-07-25 08:45:27,813 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:27,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:28,282 INFO L134 CoverageAnalysis]: Checked inductivity of 17292 backedges. 0 proven. 17292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:28,282 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:28,282 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [133] total 133 [2018-07-25 08:45:28,283 INFO L451 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-07-25 08:45:28,284 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-07-25 08:45:28,285 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8911, Invalid=8911, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 08:45:28,285 INFO L87 Difference]: Start difference. First operand 267 states and 267 transitions. Second operand 134 states. [2018-07-25 08:45:28,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:28,618 INFO L93 Difference]: Finished difference Result 271 states and 271 transitions. [2018-07-25 08:45:28,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-07-25 08:45:28,618 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 266 [2018-07-25 08:45:28,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:28,619 INFO L225 Difference]: With dead ends: 271 [2018-07-25 08:45:28,619 INFO L226 Difference]: Without dead ends: 269 [2018-07-25 08:45:28,621 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8911, Invalid=8911, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 08:45:28,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2018-07-25 08:45:28,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2018-07-25 08:45:28,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2018-07-25 08:45:28,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 269 transitions. [2018-07-25 08:45:28,626 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 269 transitions. Word has length 266 [2018-07-25 08:45:28,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:28,627 INFO L472 AbstractCegarLoop]: Abstraction has 269 states and 269 transitions. [2018-07-25 08:45:28,627 INFO L473 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-07-25 08:45:28,627 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 269 transitions. [2018-07-25 08:45:28,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-07-25 08:45:28,628 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:28,628 INFO L354 BasicCegarLoop]: trace histogram [133, 132, 1, 1, 1] [2018-07-25 08:45:28,628 INFO L415 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:28,629 INFO L82 PathProgramCache]: Analyzing trace with hash -508769105, now seen corresponding path program 132 times [2018-07-25 08:45:28,629 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:28,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:29,125 INFO L134 CoverageAnalysis]: Checked inductivity of 17556 backedges. 0 proven. 17556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:29,125 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:29,126 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [134] total 134 [2018-07-25 08:45:29,126 INFO L451 AbstractCegarLoop]: Interpolant automaton has 135 states [2018-07-25 08:45:29,127 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2018-07-25 08:45:29,128 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9045, Invalid=9045, Unknown=0, NotChecked=0, Total=18090 [2018-07-25 08:45:29,128 INFO L87 Difference]: Start difference. First operand 269 states and 269 transitions. Second operand 135 states. [2018-07-25 08:45:29,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:29,560 INFO L93 Difference]: Finished difference Result 273 states and 273 transitions. [2018-07-25 08:45:29,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2018-07-25 08:45:29,560 INFO L78 Accepts]: Start accepts. Automaton has 135 states. Word has length 268 [2018-07-25 08:45:29,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:29,561 INFO L225 Difference]: With dead ends: 273 [2018-07-25 08:45:29,561 INFO L226 Difference]: Without dead ends: 271 [2018-07-25 08:45:29,562 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9045, Invalid=9045, Unknown=0, NotChecked=0, Total=18090 [2018-07-25 08:45:29,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2018-07-25 08:45:29,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2018-07-25 08:45:29,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-07-25 08:45:29,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 271 transitions. [2018-07-25 08:45:29,565 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 271 transitions. Word has length 268 [2018-07-25 08:45:29,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:29,565 INFO L472 AbstractCegarLoop]: Abstraction has 271 states and 271 transitions. [2018-07-25 08:45:29,565 INFO L473 AbstractCegarLoop]: Interpolant automaton has 135 states. [2018-07-25 08:45:29,566 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 271 transitions. [2018-07-25 08:45:29,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-07-25 08:45:29,567 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:29,567 INFO L354 BasicCegarLoop]: trace histogram [134, 133, 1, 1, 1] [2018-07-25 08:45:29,567 INFO L415 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:29,567 INFO L82 PathProgramCache]: Analyzing trace with hash 699213929, now seen corresponding path program 133 times [2018-07-25 08:45:29,567 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:29,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:30,128 INFO L134 CoverageAnalysis]: Checked inductivity of 17822 backedges. 0 proven. 17822 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:30,128 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:30,128 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [135] total 135 [2018-07-25 08:45:30,129 INFO L451 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-07-25 08:45:30,131 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-07-25 08:45:30,132 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9180, Invalid=9180, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 08:45:30,133 INFO L87 Difference]: Start difference. First operand 271 states and 271 transitions. Second operand 136 states. [2018-07-25 08:45:30,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:30,389 INFO L93 Difference]: Finished difference Result 275 states and 275 transitions. [2018-07-25 08:45:30,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-07-25 08:45:30,389 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 270 [2018-07-25 08:45:30,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:30,390 INFO L225 Difference]: With dead ends: 275 [2018-07-25 08:45:30,390 INFO L226 Difference]: Without dead ends: 273 [2018-07-25 08:45:30,391 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9180, Invalid=9180, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 08:45:30,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2018-07-25 08:45:30,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2018-07-25 08:45:30,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2018-07-25 08:45:30,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 273 transitions. [2018-07-25 08:45:30,396 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 273 transitions. Word has length 270 [2018-07-25 08:45:30,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:30,396 INFO L472 AbstractCegarLoop]: Abstraction has 273 states and 273 transitions. [2018-07-25 08:45:30,396 INFO L473 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-07-25 08:45:30,396 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 273 transitions. [2018-07-25 08:45:30,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-07-25 08:45:30,397 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:30,398 INFO L354 BasicCegarLoop]: trace histogram [135, 134, 1, 1, 1] [2018-07-25 08:45:30,398 INFO L415 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:30,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1929739683, now seen corresponding path program 134 times [2018-07-25 08:45:30,398 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:30,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:30,992 INFO L134 CoverageAnalysis]: Checked inductivity of 18090 backedges. 0 proven. 18090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:30,992 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:30,992 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [136] total 136 [2018-07-25 08:45:30,993 INFO L451 AbstractCegarLoop]: Interpolant automaton has 137 states [2018-07-25 08:45:30,994 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2018-07-25 08:45:30,994 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9316, Invalid=9316, Unknown=0, NotChecked=0, Total=18632 [2018-07-25 08:45:30,995 INFO L87 Difference]: Start difference. First operand 273 states and 273 transitions. Second operand 137 states. [2018-07-25 08:45:31,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:31,157 INFO L93 Difference]: Finished difference Result 277 states and 277 transitions. [2018-07-25 08:45:31,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-07-25 08:45:31,157 INFO L78 Accepts]: Start accepts. Automaton has 137 states. Word has length 272 [2018-07-25 08:45:31,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:31,158 INFO L225 Difference]: With dead ends: 277 [2018-07-25 08:45:31,158 INFO L226 Difference]: Without dead ends: 275 [2018-07-25 08:45:31,160 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9316, Invalid=9316, Unknown=0, NotChecked=0, Total=18632 [2018-07-25 08:45:31,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2018-07-25 08:45:31,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2018-07-25 08:45:31,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2018-07-25 08:45:31,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 275 transitions. [2018-07-25 08:45:31,164 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 275 transitions. Word has length 272 [2018-07-25 08:45:31,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:31,165 INFO L472 AbstractCegarLoop]: Abstraction has 275 states and 275 transitions. [2018-07-25 08:45:31,165 INFO L473 AbstractCegarLoop]: Interpolant automaton has 137 states. [2018-07-25 08:45:31,165 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 275 transitions. [2018-07-25 08:45:31,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-07-25 08:45:31,166 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:31,166 INFO L354 BasicCegarLoop]: trace histogram [136, 135, 1, 1, 1] [2018-07-25 08:45:31,167 INFO L415 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:31,167 INFO L82 PathProgramCache]: Analyzing trace with hash -945984419, now seen corresponding path program 135 times [2018-07-25 08:45:31,167 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:31,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:31,798 INFO L134 CoverageAnalysis]: Checked inductivity of 18360 backedges. 0 proven. 18360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:31,799 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:31,799 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [137] total 137 [2018-07-25 08:45:31,799 INFO L451 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-07-25 08:45:31,801 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-07-25 08:45:31,802 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9453, Invalid=9453, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 08:45:31,802 INFO L87 Difference]: Start difference. First operand 275 states and 275 transitions. Second operand 138 states. [2018-07-25 08:45:32,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:32,213 INFO L93 Difference]: Finished difference Result 279 states and 279 transitions. [2018-07-25 08:45:32,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2018-07-25 08:45:32,214 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 274 [2018-07-25 08:45:32,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:32,214 INFO L225 Difference]: With dead ends: 279 [2018-07-25 08:45:32,214 INFO L226 Difference]: Without dead ends: 277 [2018-07-25 08:45:32,216 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9453, Invalid=9453, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 08:45:32,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2018-07-25 08:45:32,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2018-07-25 08:45:32,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2018-07-25 08:45:32,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 277 transitions. [2018-07-25 08:45:32,219 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 277 transitions. Word has length 274 [2018-07-25 08:45:32,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:32,219 INFO L472 AbstractCegarLoop]: Abstraction has 277 states and 277 transitions. [2018-07-25 08:45:32,219 INFO L473 AbstractCegarLoop]: Interpolant automaton has 138 states. [2018-07-25 08:45:32,219 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 277 transitions. [2018-07-25 08:45:32,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-07-25 08:45:32,220 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:32,220 INFO L354 BasicCegarLoop]: trace histogram [137, 136, 1, 1, 1] [2018-07-25 08:45:32,221 INFO L415 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:32,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1442092183, now seen corresponding path program 136 times [2018-07-25 08:45:32,221 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:32,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:32,705 INFO L134 CoverageAnalysis]: Checked inductivity of 18632 backedges. 0 proven. 18632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:32,705 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:32,705 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [138] total 138 [2018-07-25 08:45:32,706 INFO L451 AbstractCegarLoop]: Interpolant automaton has 139 states [2018-07-25 08:45:32,707 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2018-07-25 08:45:32,708 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2018-07-25 08:45:32,708 INFO L87 Difference]: Start difference. First operand 277 states and 277 transitions. Second operand 139 states. [2018-07-25 08:45:33,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:33,138 INFO L93 Difference]: Finished difference Result 281 states and 281 transitions. [2018-07-25 08:45:33,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-07-25 08:45:33,139 INFO L78 Accepts]: Start accepts. Automaton has 139 states. Word has length 276 [2018-07-25 08:45:33,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:33,139 INFO L225 Difference]: With dead ends: 281 [2018-07-25 08:45:33,139 INFO L226 Difference]: Without dead ends: 279 [2018-07-25 08:45:33,141 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2018-07-25 08:45:33,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2018-07-25 08:45:33,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2018-07-25 08:45:33,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2018-07-25 08:45:33,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 279 transitions. [2018-07-25 08:45:33,144 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 279 transitions. Word has length 276 [2018-07-25 08:45:33,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:33,144 INFO L472 AbstractCegarLoop]: Abstraction has 279 states and 279 transitions. [2018-07-25 08:45:33,144 INFO L473 AbstractCegarLoop]: Interpolant automaton has 139 states. [2018-07-25 08:45:33,144 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 279 transitions. [2018-07-25 08:45:33,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-07-25 08:45:33,145 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:33,146 INFO L354 BasicCegarLoop]: trace histogram [138, 137, 1, 1, 1] [2018-07-25 08:45:33,146 INFO L415 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:33,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1423796655, now seen corresponding path program 137 times [2018-07-25 08:45:33,146 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:33,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:33,670 INFO L134 CoverageAnalysis]: Checked inductivity of 18906 backedges. 0 proven. 18906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:33,671 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:33,671 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [139] total 139 [2018-07-25 08:45:33,671 INFO L451 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-07-25 08:45:33,673 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-07-25 08:45:33,674 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9730, Invalid=9730, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 08:45:33,674 INFO L87 Difference]: Start difference. First operand 279 states and 279 transitions. Second operand 140 states. [2018-07-25 08:45:34,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:34,083 INFO L93 Difference]: Finished difference Result 283 states and 283 transitions. [2018-07-25 08:45:34,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-07-25 08:45:34,083 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 278 [2018-07-25 08:45:34,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:34,084 INFO L225 Difference]: With dead ends: 283 [2018-07-25 08:45:34,084 INFO L226 Difference]: Without dead ends: 281 [2018-07-25 08:45:34,085 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9730, Invalid=9730, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 08:45:34,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2018-07-25 08:45:34,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2018-07-25 08:45:34,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2018-07-25 08:45:34,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 281 transitions. [2018-07-25 08:45:34,089 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 281 transitions. Word has length 278 [2018-07-25 08:45:34,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:34,090 INFO L472 AbstractCegarLoop]: Abstraction has 281 states and 281 transitions. [2018-07-25 08:45:34,090 INFO L473 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-07-25 08:45:34,090 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 281 transitions. [2018-07-25 08:45:34,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2018-07-25 08:45:34,091 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:34,091 INFO L354 BasicCegarLoop]: trace histogram [139, 138, 1, 1, 1] [2018-07-25 08:45:34,092 INFO L415 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:34,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1826034059, now seen corresponding path program 138 times [2018-07-25 08:45:34,092 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:34,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:34,737 INFO L134 CoverageAnalysis]: Checked inductivity of 19182 backedges. 0 proven. 19182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:34,737 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:34,737 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [140] total 140 [2018-07-25 08:45:34,737 INFO L451 AbstractCegarLoop]: Interpolant automaton has 141 states [2018-07-25 08:45:34,738 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2018-07-25 08:45:34,739 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9870, Invalid=9870, Unknown=0, NotChecked=0, Total=19740 [2018-07-25 08:45:34,739 INFO L87 Difference]: Start difference. First operand 281 states and 281 transitions. Second operand 141 states. [2018-07-25 08:45:35,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:35,137 INFO L93 Difference]: Finished difference Result 285 states and 285 transitions. [2018-07-25 08:45:35,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2018-07-25 08:45:35,137 INFO L78 Accepts]: Start accepts. Automaton has 141 states. Word has length 280 [2018-07-25 08:45:35,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:35,137 INFO L225 Difference]: With dead ends: 285 [2018-07-25 08:45:35,138 INFO L226 Difference]: Without dead ends: 283 [2018-07-25 08:45:35,138 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9870, Invalid=9870, Unknown=0, NotChecked=0, Total=19740 [2018-07-25 08:45:35,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-07-25 08:45:35,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2018-07-25 08:45:35,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2018-07-25 08:45:35,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 283 transitions. [2018-07-25 08:45:35,141 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 283 transitions. Word has length 280 [2018-07-25 08:45:35,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:35,141 INFO L472 AbstractCegarLoop]: Abstraction has 283 states and 283 transitions. [2018-07-25 08:45:35,141 INFO L473 AbstractCegarLoop]: Interpolant automaton has 141 states. [2018-07-25 08:45:35,142 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 283 transitions. [2018-07-25 08:45:35,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-07-25 08:45:35,142 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:35,142 INFO L354 BasicCegarLoop]: trace histogram [140, 139, 1, 1, 1] [2018-07-25 08:45:35,143 INFO L415 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:35,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1822841275, now seen corresponding path program 139 times [2018-07-25 08:45:35,143 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:35,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:35,655 INFO L134 CoverageAnalysis]: Checked inductivity of 19460 backedges. 0 proven. 19460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:35,656 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:35,656 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [141] total 141 [2018-07-25 08:45:35,656 INFO L451 AbstractCegarLoop]: Interpolant automaton has 142 states [2018-07-25 08:45:35,658 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2018-07-25 08:45:35,659 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10011, Invalid=10011, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 08:45:35,659 INFO L87 Difference]: Start difference. First operand 283 states and 283 transitions. Second operand 142 states. [2018-07-25 08:45:36,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:36,116 INFO L93 Difference]: Finished difference Result 287 states and 287 transitions. [2018-07-25 08:45:36,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-07-25 08:45:36,116 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 282 [2018-07-25 08:45:36,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:36,117 INFO L225 Difference]: With dead ends: 287 [2018-07-25 08:45:36,117 INFO L226 Difference]: Without dead ends: 285 [2018-07-25 08:45:36,119 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10011, Invalid=10011, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 08:45:36,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2018-07-25 08:45:36,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2018-07-25 08:45:36,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2018-07-25 08:45:36,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 285 transitions. [2018-07-25 08:45:36,122 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 285 transitions. Word has length 282 [2018-07-25 08:45:36,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:36,122 INFO L472 AbstractCegarLoop]: Abstraction has 285 states and 285 transitions. [2018-07-25 08:45:36,122 INFO L473 AbstractCegarLoop]: Interpolant automaton has 142 states. [2018-07-25 08:45:36,122 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 285 transitions. [2018-07-25 08:45:36,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-07-25 08:45:36,123 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:36,123 INFO L354 BasicCegarLoop]: trace histogram [141, 140, 1, 1, 1] [2018-07-25 08:45:36,123 INFO L415 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:36,123 INFO L82 PathProgramCache]: Analyzing trace with hash 596243583, now seen corresponding path program 140 times [2018-07-25 08:45:36,123 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:36,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:36,669 INFO L134 CoverageAnalysis]: Checked inductivity of 19740 backedges. 0 proven. 19740 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:36,669 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:36,669 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [142] total 142 [2018-07-25 08:45:36,669 INFO L451 AbstractCegarLoop]: Interpolant automaton has 143 states [2018-07-25 08:45:36,671 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2018-07-25 08:45:36,672 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10153, Invalid=10153, Unknown=0, NotChecked=0, Total=20306 [2018-07-25 08:45:36,672 INFO L87 Difference]: Start difference. First operand 285 states and 285 transitions. Second operand 143 states. [2018-07-25 08:45:37,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:37,130 INFO L93 Difference]: Finished difference Result 289 states and 289 transitions. [2018-07-25 08:45:37,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2018-07-25 08:45:37,130 INFO L78 Accepts]: Start accepts. Automaton has 143 states. Word has length 284 [2018-07-25 08:45:37,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:37,131 INFO L225 Difference]: With dead ends: 289 [2018-07-25 08:45:37,131 INFO L226 Difference]: Without dead ends: 287 [2018-07-25 08:45:37,133 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10153, Invalid=10153, Unknown=0, NotChecked=0, Total=20306 [2018-07-25 08:45:37,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2018-07-25 08:45:37,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2018-07-25 08:45:37,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2018-07-25 08:45:37,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 287 transitions. [2018-07-25 08:45:37,137 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 287 transitions. Word has length 284 [2018-07-25 08:45:37,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:37,138 INFO L472 AbstractCegarLoop]: Abstraction has 287 states and 287 transitions. [2018-07-25 08:45:37,138 INFO L473 AbstractCegarLoop]: Interpolant automaton has 143 states. [2018-07-25 08:45:37,138 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 287 transitions. [2018-07-25 08:45:37,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-07-25 08:45:37,139 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:37,139 INFO L354 BasicCegarLoop]: trace histogram [142, 141, 1, 1, 1] [2018-07-25 08:45:37,140 INFO L415 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:37,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1759484985, now seen corresponding path program 141 times [2018-07-25 08:45:37,140 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:37,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:37,818 INFO L134 CoverageAnalysis]: Checked inductivity of 20022 backedges. 0 proven. 20022 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:37,819 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:37,819 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [143] total 143 [2018-07-25 08:45:37,819 INFO L451 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-07-25 08:45:37,821 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-07-25 08:45:37,822 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10296, Invalid=10296, Unknown=0, NotChecked=0, Total=20592 [2018-07-25 08:45:37,822 INFO L87 Difference]: Start difference. First operand 287 states and 287 transitions. Second operand 144 states. [2018-07-25 08:45:38,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:38,295 INFO L93 Difference]: Finished difference Result 291 states and 291 transitions. [2018-07-25 08:45:38,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2018-07-25 08:45:38,295 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 286 [2018-07-25 08:45:38,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:38,296 INFO L225 Difference]: With dead ends: 291 [2018-07-25 08:45:38,296 INFO L226 Difference]: Without dead ends: 289 [2018-07-25 08:45:38,297 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10296, Invalid=10296, Unknown=0, NotChecked=0, Total=20592 [2018-07-25 08:45:38,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2018-07-25 08:45:38,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2018-07-25 08:45:38,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2018-07-25 08:45:38,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 289 transitions. [2018-07-25 08:45:38,300 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 289 transitions. Word has length 286 [2018-07-25 08:45:38,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:38,301 INFO L472 AbstractCegarLoop]: Abstraction has 289 states and 289 transitions. [2018-07-25 08:45:38,301 INFO L473 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-07-25 08:45:38,301 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 289 transitions. [2018-07-25 08:45:38,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-07-25 08:45:38,302 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:38,302 INFO L354 BasicCegarLoop]: trace histogram [143, 142, 1, 1, 1] [2018-07-25 08:45:38,302 INFO L415 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:38,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1351991949, now seen corresponding path program 142 times [2018-07-25 08:45:38,302 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:38,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:38,987 INFO L134 CoverageAnalysis]: Checked inductivity of 20306 backedges. 0 proven. 20306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:38,987 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:38,987 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [144] total 144 [2018-07-25 08:45:38,987 INFO L451 AbstractCegarLoop]: Interpolant automaton has 145 states [2018-07-25 08:45:38,989 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2018-07-25 08:45:38,990 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10440, Invalid=10440, Unknown=0, NotChecked=0, Total=20880 [2018-07-25 08:45:38,990 INFO L87 Difference]: Start difference. First operand 289 states and 289 transitions. Second operand 145 states. [2018-07-25 08:45:39,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:39,524 INFO L93 Difference]: Finished difference Result 293 states and 293 transitions. [2018-07-25 08:45:39,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2018-07-25 08:45:39,524 INFO L78 Accepts]: Start accepts. Automaton has 145 states. Word has length 288 [2018-07-25 08:45:39,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:39,525 INFO L225 Difference]: With dead ends: 293 [2018-07-25 08:45:39,525 INFO L226 Difference]: Without dead ends: 291 [2018-07-25 08:45:39,526 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=10440, Invalid=10440, Unknown=0, NotChecked=0, Total=20880 [2018-07-25 08:45:39,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2018-07-25 08:45:39,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2018-07-25 08:45:39,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2018-07-25 08:45:39,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 291 transitions. [2018-07-25 08:45:39,529 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 291 transitions. Word has length 288 [2018-07-25 08:45:39,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:39,529 INFO L472 AbstractCegarLoop]: Abstraction has 291 states and 291 transitions. [2018-07-25 08:45:39,529 INFO L473 AbstractCegarLoop]: Interpolant automaton has 145 states. [2018-07-25 08:45:39,529 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 291 transitions. [2018-07-25 08:45:39,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-07-25 08:45:39,531 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:39,531 INFO L354 BasicCegarLoop]: trace histogram [144, 143, 1, 1, 1] [2018-07-25 08:45:39,531 INFO L415 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:39,531 INFO L82 PathProgramCache]: Analyzing trace with hash 2110879789, now seen corresponding path program 143 times [2018-07-25 08:45:39,531 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:39,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:40,095 INFO L134 CoverageAnalysis]: Checked inductivity of 20592 backedges. 0 proven. 20592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:40,095 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:40,095 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [145] total 145 [2018-07-25 08:45:40,095 INFO L451 AbstractCegarLoop]: Interpolant automaton has 146 states [2018-07-25 08:45:40,097 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2018-07-25 08:45:40,098 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10585, Invalid=10585, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 08:45:40,099 INFO L87 Difference]: Start difference. First operand 291 states and 291 transitions. Second operand 146 states. [2018-07-25 08:45:40,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:40,435 INFO L93 Difference]: Finished difference Result 295 states and 295 transitions. [2018-07-25 08:45:40,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2018-07-25 08:45:40,436 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 290 [2018-07-25 08:45:40,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:40,436 INFO L225 Difference]: With dead ends: 295 [2018-07-25 08:45:40,436 INFO L226 Difference]: Without dead ends: 293 [2018-07-25 08:45:40,438 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10585, Invalid=10585, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 08:45:40,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-07-25 08:45:40,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2018-07-25 08:45:40,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-07-25 08:45:40,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 293 transitions. [2018-07-25 08:45:40,441 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 293 transitions. Word has length 290 [2018-07-25 08:45:40,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:40,441 INFO L472 AbstractCegarLoop]: Abstraction has 293 states and 293 transitions. [2018-07-25 08:45:40,441 INFO L473 AbstractCegarLoop]: Interpolant automaton has 146 states. [2018-07-25 08:45:40,441 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 293 transitions. [2018-07-25 08:45:40,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2018-07-25 08:45:40,442 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:40,442 INFO L354 BasicCegarLoop]: trace histogram [145, 144, 1, 1, 1] [2018-07-25 08:45:40,442 INFO L415 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:40,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1330965607, now seen corresponding path program 144 times [2018-07-25 08:45:40,443 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:40,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:41,021 INFO L134 CoverageAnalysis]: Checked inductivity of 20880 backedges. 0 proven. 20880 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:41,021 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:41,021 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [146] total 146 [2018-07-25 08:45:41,022 INFO L451 AbstractCegarLoop]: Interpolant automaton has 147 states [2018-07-25 08:45:41,024 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2018-07-25 08:45:41,025 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10731, Invalid=10731, Unknown=0, NotChecked=0, Total=21462 [2018-07-25 08:45:41,025 INFO L87 Difference]: Start difference. First operand 293 states and 293 transitions. Second operand 147 states. [2018-07-25 08:45:41,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:41,221 INFO L93 Difference]: Finished difference Result 297 states and 297 transitions. [2018-07-25 08:45:41,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2018-07-25 08:45:41,222 INFO L78 Accepts]: Start accepts. Automaton has 147 states. Word has length 292 [2018-07-25 08:45:41,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:41,222 INFO L225 Difference]: With dead ends: 297 [2018-07-25 08:45:41,222 INFO L226 Difference]: Without dead ends: 295 [2018-07-25 08:45:41,224 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10731, Invalid=10731, Unknown=0, NotChecked=0, Total=21462 [2018-07-25 08:45:41,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2018-07-25 08:45:41,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2018-07-25 08:45:41,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2018-07-25 08:45:41,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 295 transitions. [2018-07-25 08:45:41,227 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 295 transitions. Word has length 292 [2018-07-25 08:45:41,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:41,228 INFO L472 AbstractCegarLoop]: Abstraction has 295 states and 295 transitions. [2018-07-25 08:45:41,228 INFO L473 AbstractCegarLoop]: Interpolant automaton has 147 states. [2018-07-25 08:45:41,228 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 295 transitions. [2018-07-25 08:45:41,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-07-25 08:45:41,229 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:41,229 INFO L354 BasicCegarLoop]: trace histogram [146, 145, 1, 1, 1] [2018-07-25 08:45:41,230 INFO L415 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:41,230 INFO L82 PathProgramCache]: Analyzing trace with hash -842253791, now seen corresponding path program 145 times [2018-07-25 08:45:41,230 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:41,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:41,846 INFO L134 CoverageAnalysis]: Checked inductivity of 21170 backedges. 0 proven. 21170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:41,846 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:41,846 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [147] total 147 [2018-07-25 08:45:41,846 INFO L451 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-07-25 08:45:41,848 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-07-25 08:45:41,849 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10878, Invalid=10878, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 08:45:41,849 INFO L87 Difference]: Start difference. First operand 295 states and 295 transitions. Second operand 148 states. [2018-07-25 08:45:42,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:42,355 INFO L93 Difference]: Finished difference Result 299 states and 299 transitions. [2018-07-25 08:45:42,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-07-25 08:45:42,355 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 294 [2018-07-25 08:45:42,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:42,356 INFO L225 Difference]: With dead ends: 299 [2018-07-25 08:45:42,356 INFO L226 Difference]: Without dead ends: 297 [2018-07-25 08:45:42,358 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10878, Invalid=10878, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 08:45:42,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2018-07-25 08:45:42,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2018-07-25 08:45:42,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2018-07-25 08:45:42,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 297 transitions. [2018-07-25 08:45:42,361 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 297 transitions. Word has length 294 [2018-07-25 08:45:42,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:42,361 INFO L472 AbstractCegarLoop]: Abstraction has 297 states and 297 transitions. [2018-07-25 08:45:42,361 INFO L473 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-07-25 08:45:42,361 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 297 transitions. [2018-07-25 08:45:42,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2018-07-25 08:45:42,362 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:42,362 INFO L354 BasicCegarLoop]: trace histogram [147, 146, 1, 1, 1] [2018-07-25 08:45:42,362 INFO L415 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:42,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1951989413, now seen corresponding path program 146 times [2018-07-25 08:45:42,362 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:42,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:42,958 INFO L134 CoverageAnalysis]: Checked inductivity of 21462 backedges. 0 proven. 21462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:42,959 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:42,959 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [148] total 148 [2018-07-25 08:45:42,959 INFO L451 AbstractCegarLoop]: Interpolant automaton has 149 states [2018-07-25 08:45:42,961 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2018-07-25 08:45:42,962 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11026, Invalid=11026, Unknown=0, NotChecked=0, Total=22052 [2018-07-25 08:45:42,962 INFO L87 Difference]: Start difference. First operand 297 states and 297 transitions. Second operand 149 states. [2018-07-25 08:45:43,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:43,526 INFO L93 Difference]: Finished difference Result 301 states and 301 transitions. [2018-07-25 08:45:43,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2018-07-25 08:45:43,526 INFO L78 Accepts]: Start accepts. Automaton has 149 states. Word has length 296 [2018-07-25 08:45:43,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:43,527 INFO L225 Difference]: With dead ends: 301 [2018-07-25 08:45:43,527 INFO L226 Difference]: Without dead ends: 299 [2018-07-25 08:45:43,528 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11026, Invalid=11026, Unknown=0, NotChecked=0, Total=22052 [2018-07-25 08:45:43,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2018-07-25 08:45:43,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2018-07-25 08:45:43,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-07-25 08:45:43,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 299 transitions. [2018-07-25 08:45:43,533 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 299 transitions. Word has length 296 [2018-07-25 08:45:43,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:43,533 INFO L472 AbstractCegarLoop]: Abstraction has 299 states and 299 transitions. [2018-07-25 08:45:43,533 INFO L473 AbstractCegarLoop]: Interpolant automaton has 149 states. [2018-07-25 08:45:43,533 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 299 transitions. [2018-07-25 08:45:43,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-07-25 08:45:43,535 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:43,535 INFO L354 BasicCegarLoop]: trace histogram [148, 147, 1, 1, 1] [2018-07-25 08:45:43,535 INFO L415 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:43,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1038934549, now seen corresponding path program 147 times [2018-07-25 08:45:43,535 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:43,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:44,375 INFO L134 CoverageAnalysis]: Checked inductivity of 21756 backedges. 0 proven. 21756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:44,375 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:44,375 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [149] total 149 [2018-07-25 08:45:44,375 INFO L451 AbstractCegarLoop]: Interpolant automaton has 150 states [2018-07-25 08:45:44,377 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2018-07-25 08:45:44,379 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11175, Invalid=11175, Unknown=0, NotChecked=0, Total=22350 [2018-07-25 08:45:44,379 INFO L87 Difference]: Start difference. First operand 299 states and 299 transitions. Second operand 150 states. [2018-07-25 08:45:45,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:45,143 INFO L93 Difference]: Finished difference Result 303 states and 303 transitions. [2018-07-25 08:45:45,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2018-07-25 08:45:45,144 INFO L78 Accepts]: Start accepts. Automaton has 150 states. Word has length 298 [2018-07-25 08:45:45,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:45,144 INFO L225 Difference]: With dead ends: 303 [2018-07-25 08:45:45,144 INFO L226 Difference]: Without dead ends: 301 [2018-07-25 08:45:45,146 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11175, Invalid=11175, Unknown=0, NotChecked=0, Total=22350 [2018-07-25 08:45:45,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2018-07-25 08:45:45,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2018-07-25 08:45:45,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2018-07-25 08:45:45,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 301 transitions. [2018-07-25 08:45:45,149 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 301 transitions. Word has length 298 [2018-07-25 08:45:45,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:45,150 INFO L472 AbstractCegarLoop]: Abstraction has 301 states and 301 transitions. [2018-07-25 08:45:45,150 INFO L473 AbstractCegarLoop]: Interpolant automaton has 150 states. [2018-07-25 08:45:45,150 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 301 transitions. [2018-07-25 08:45:45,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-07-25 08:45:45,150 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:45,151 INFO L354 BasicCegarLoop]: trace histogram [149, 148, 1, 1, 1] [2018-07-25 08:45:45,151 INFO L415 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:45,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1983741007, now seen corresponding path program 148 times [2018-07-25 08:45:45,151 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:45,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:45,845 INFO L134 CoverageAnalysis]: Checked inductivity of 22052 backedges. 0 proven. 22052 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:45,845 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:45,845 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [150] total 150 [2018-07-25 08:45:45,846 INFO L451 AbstractCegarLoop]: Interpolant automaton has 151 states [2018-07-25 08:45:45,847 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2018-07-25 08:45:45,848 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11325, Invalid=11325, Unknown=0, NotChecked=0, Total=22650 [2018-07-25 08:45:45,849 INFO L87 Difference]: Start difference. First operand 301 states and 301 transitions. Second operand 151 states. [2018-07-25 08:45:46,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:46,086 INFO L93 Difference]: Finished difference Result 305 states and 305 transitions. [2018-07-25 08:45:46,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2018-07-25 08:45:46,086 INFO L78 Accepts]: Start accepts. Automaton has 151 states. Word has length 300 [2018-07-25 08:45:46,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:46,087 INFO L225 Difference]: With dead ends: 305 [2018-07-25 08:45:46,087 INFO L226 Difference]: Without dead ends: 303 [2018-07-25 08:45:46,089 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11325, Invalid=11325, Unknown=0, NotChecked=0, Total=22650 [2018-07-25 08:45:46,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2018-07-25 08:45:46,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2018-07-25 08:45:46,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2018-07-25 08:45:46,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 303 transitions. [2018-07-25 08:45:46,092 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 303 transitions. Word has length 300 [2018-07-25 08:45:46,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:46,092 INFO L472 AbstractCegarLoop]: Abstraction has 303 states and 303 transitions. [2018-07-25 08:45:46,092 INFO L473 AbstractCegarLoop]: Interpolant automaton has 151 states. [2018-07-25 08:45:46,092 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 303 transitions. [2018-07-25 08:45:46,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-07-25 08:45:46,093 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:46,093 INFO L354 BasicCegarLoop]: trace histogram [150, 149, 1, 1, 1] [2018-07-25 08:45:46,093 INFO L415 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:46,094 INFO L82 PathProgramCache]: Analyzing trace with hash -590319607, now seen corresponding path program 149 times [2018-07-25 08:45:46,094 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:46,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:46,740 INFO L134 CoverageAnalysis]: Checked inductivity of 22350 backedges. 0 proven. 22350 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:46,741 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:46,741 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [151] total 151 [2018-07-25 08:45:46,741 INFO L451 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-07-25 08:45:46,743 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-07-25 08:45:46,744 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11476, Invalid=11476, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 08:45:46,744 INFO L87 Difference]: Start difference. First operand 303 states and 303 transitions. Second operand 152 states. [2018-07-25 08:45:47,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:47,458 INFO L93 Difference]: Finished difference Result 307 states and 307 transitions. [2018-07-25 08:45:47,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2018-07-25 08:45:47,458 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 302 [2018-07-25 08:45:47,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:47,459 INFO L225 Difference]: With dead ends: 307 [2018-07-25 08:45:47,459 INFO L226 Difference]: Without dead ends: 305 [2018-07-25 08:45:47,462 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11476, Invalid=11476, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 08:45:47,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2018-07-25 08:45:47,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2018-07-25 08:45:47,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2018-07-25 08:45:47,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 305 transitions. [2018-07-25 08:45:47,467 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 305 transitions. Word has length 302 [2018-07-25 08:45:47,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:47,468 INFO L472 AbstractCegarLoop]: Abstraction has 305 states and 305 transitions. [2018-07-25 08:45:47,468 INFO L473 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-07-25 08:45:47,468 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 305 transitions. [2018-07-25 08:45:47,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-07-25 08:45:47,469 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:47,469 INFO L354 BasicCegarLoop]: trace histogram [151, 150, 1, 1, 1] [2018-07-25 08:45:47,470 INFO L415 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:47,470 INFO L82 PathProgramCache]: Analyzing trace with hash -361407165, now seen corresponding path program 150 times [2018-07-25 08:45:47,470 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:47,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:48,154 INFO L134 CoverageAnalysis]: Checked inductivity of 22650 backedges. 0 proven. 22650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:48,154 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:48,154 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [152] total 152 [2018-07-25 08:45:48,155 INFO L451 AbstractCegarLoop]: Interpolant automaton has 153 states [2018-07-25 08:45:48,156 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants. [2018-07-25 08:45:48,156 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11628, Invalid=11628, Unknown=0, NotChecked=0, Total=23256 [2018-07-25 08:45:48,156 INFO L87 Difference]: Start difference. First operand 305 states and 305 transitions. Second operand 153 states. [2018-07-25 08:45:48,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:48,764 INFO L93 Difference]: Finished difference Result 309 states and 309 transitions. [2018-07-25 08:45:48,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2018-07-25 08:45:48,765 INFO L78 Accepts]: Start accepts. Automaton has 153 states. Word has length 304 [2018-07-25 08:45:48,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:48,765 INFO L225 Difference]: With dead ends: 309 [2018-07-25 08:45:48,765 INFO L226 Difference]: Without dead ends: 307 [2018-07-25 08:45:48,766 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11628, Invalid=11628, Unknown=0, NotChecked=0, Total=23256 [2018-07-25 08:45:48,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2018-07-25 08:45:48,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2018-07-25 08:45:48,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2018-07-25 08:45:48,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 307 transitions. [2018-07-25 08:45:48,769 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 307 transitions. Word has length 304 [2018-07-25 08:45:48,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:48,770 INFO L472 AbstractCegarLoop]: Abstraction has 307 states and 307 transitions. [2018-07-25 08:45:48,770 INFO L473 AbstractCegarLoop]: Interpolant automaton has 153 states. [2018-07-25 08:45:48,770 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 307 transitions. [2018-07-25 08:45:48,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-07-25 08:45:48,771 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:48,771 INFO L354 BasicCegarLoop]: trace histogram [152, 151, 1, 1, 1] [2018-07-25 08:45:48,771 INFO L415 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:48,771 INFO L82 PathProgramCache]: Analyzing trace with hash 580117501, now seen corresponding path program 151 times [2018-07-25 08:45:48,771 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:48,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:49,398 INFO L134 CoverageAnalysis]: Checked inductivity of 22952 backedges. 0 proven. 22952 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:49,398 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:49,398 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [153] total 153 [2018-07-25 08:45:49,399 INFO L451 AbstractCegarLoop]: Interpolant automaton has 154 states [2018-07-25 08:45:49,400 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2018-07-25 08:45:49,402 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11781, Invalid=11781, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 08:45:49,402 INFO L87 Difference]: Start difference. First operand 307 states and 307 transitions. Second operand 154 states. [2018-07-25 08:45:49,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:49,853 INFO L93 Difference]: Finished difference Result 311 states and 311 transitions. [2018-07-25 08:45:49,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2018-07-25 08:45:49,853 INFO L78 Accepts]: Start accepts. Automaton has 154 states. Word has length 306 [2018-07-25 08:45:49,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:49,854 INFO L225 Difference]: With dead ends: 311 [2018-07-25 08:45:49,854 INFO L226 Difference]: Without dead ends: 309 [2018-07-25 08:45:49,857 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11781, Invalid=11781, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 08:45:49,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2018-07-25 08:45:49,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2018-07-25 08:45:49,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2018-07-25 08:45:49,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 309 transitions. [2018-07-25 08:45:49,862 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 309 transitions. Word has length 306 [2018-07-25 08:45:49,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:49,862 INFO L472 AbstractCegarLoop]: Abstraction has 309 states and 309 transitions. [2018-07-25 08:45:49,862 INFO L473 AbstractCegarLoop]: Interpolant automaton has 154 states. [2018-07-25 08:45:49,863 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 309 transitions. [2018-07-25 08:45:49,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-07-25 08:45:49,864 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:49,864 INFO L354 BasicCegarLoop]: trace histogram [153, 152, 1, 1, 1] [2018-07-25 08:45:49,864 INFO L415 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:49,864 INFO L82 PathProgramCache]: Analyzing trace with hash -852777929, now seen corresponding path program 152 times [2018-07-25 08:45:49,865 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:50,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:50,672 INFO L134 CoverageAnalysis]: Checked inductivity of 23256 backedges. 0 proven. 23256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:50,672 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:50,672 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [154] total 154 [2018-07-25 08:45:50,673 INFO L451 AbstractCegarLoop]: Interpolant automaton has 155 states [2018-07-25 08:45:50,674 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2018-07-25 08:45:50,675 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11935, Invalid=11935, Unknown=0, NotChecked=0, Total=23870 [2018-07-25 08:45:50,675 INFO L87 Difference]: Start difference. First operand 309 states and 309 transitions. Second operand 155 states. [2018-07-25 08:45:51,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:51,334 INFO L93 Difference]: Finished difference Result 313 states and 313 transitions. [2018-07-25 08:45:51,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2018-07-25 08:45:51,334 INFO L78 Accepts]: Start accepts. Automaton has 155 states. Word has length 308 [2018-07-25 08:45:51,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:51,335 INFO L225 Difference]: With dead ends: 313 [2018-07-25 08:45:51,335 INFO L226 Difference]: Without dead ends: 311 [2018-07-25 08:45:51,336 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11935, Invalid=11935, Unknown=0, NotChecked=0, Total=23870 [2018-07-25 08:45:51,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-07-25 08:45:51,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2018-07-25 08:45:51,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2018-07-25 08:45:51,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 311 transitions. [2018-07-25 08:45:51,339 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 311 transitions. Word has length 308 [2018-07-25 08:45:51,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:51,340 INFO L472 AbstractCegarLoop]: Abstraction has 311 states and 311 transitions. [2018-07-25 08:45:51,340 INFO L473 AbstractCegarLoop]: Interpolant automaton has 155 states. [2018-07-25 08:45:51,340 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 311 transitions. [2018-07-25 08:45:51,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-07-25 08:45:51,341 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:51,341 INFO L354 BasicCegarLoop]: trace histogram [154, 153, 1, 1, 1] [2018-07-25 08:45:51,341 INFO L415 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:51,341 INFO L82 PathProgramCache]: Analyzing trace with hash 819215857, now seen corresponding path program 153 times [2018-07-25 08:45:51,341 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:51,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:52,007 INFO L134 CoverageAnalysis]: Checked inductivity of 23562 backedges. 0 proven. 23562 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:52,007 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:52,007 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [155] total 155 [2018-07-25 08:45:52,008 INFO L451 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-07-25 08:45:52,010 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-07-25 08:45:52,011 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12090, Invalid=12090, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 08:45:52,012 INFO L87 Difference]: Start difference. First operand 311 states and 311 transitions. Second operand 156 states. [2018-07-25 08:45:52,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:52,346 INFO L93 Difference]: Finished difference Result 315 states and 315 transitions. [2018-07-25 08:45:52,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2018-07-25 08:45:52,346 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 310 [2018-07-25 08:45:52,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:52,347 INFO L225 Difference]: With dead ends: 315 [2018-07-25 08:45:52,347 INFO L226 Difference]: Without dead ends: 313 [2018-07-25 08:45:52,348 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12090, Invalid=12090, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 08:45:52,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2018-07-25 08:45:52,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2018-07-25 08:45:52,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2018-07-25 08:45:52,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 313 transitions. [2018-07-25 08:45:52,352 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 313 transitions. Word has length 310 [2018-07-25 08:45:52,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:52,352 INFO L472 AbstractCegarLoop]: Abstraction has 313 states and 313 transitions. [2018-07-25 08:45:52,352 INFO L473 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-07-25 08:45:52,352 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 313 transitions. [2018-07-25 08:45:52,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-07-25 08:45:52,353 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:52,353 INFO L354 BasicCegarLoop]: trace histogram [155, 154, 1, 1, 1] [2018-07-25 08:45:52,353 INFO L415 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:52,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1287475499, now seen corresponding path program 154 times [2018-07-25 08:45:52,354 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:52,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:53,041 INFO L134 CoverageAnalysis]: Checked inductivity of 23870 backedges. 0 proven. 23870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:53,041 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:53,041 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [156] total 156 [2018-07-25 08:45:53,042 INFO L451 AbstractCegarLoop]: Interpolant automaton has 157 states [2018-07-25 08:45:53,043 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 157 interpolants. [2018-07-25 08:45:53,044 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12246, Invalid=12246, Unknown=0, NotChecked=0, Total=24492 [2018-07-25 08:45:53,045 INFO L87 Difference]: Start difference. First operand 313 states and 313 transitions. Second operand 157 states. [2018-07-25 08:45:53,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:53,756 INFO L93 Difference]: Finished difference Result 317 states and 317 transitions. [2018-07-25 08:45:53,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2018-07-25 08:45:53,756 INFO L78 Accepts]: Start accepts. Automaton has 157 states. Word has length 312 [2018-07-25 08:45:53,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:53,757 INFO L225 Difference]: With dead ends: 317 [2018-07-25 08:45:53,757 INFO L226 Difference]: Without dead ends: 315 [2018-07-25 08:45:53,758 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12246, Invalid=12246, Unknown=0, NotChecked=0, Total=24492 [2018-07-25 08:45:53,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2018-07-25 08:45:53,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2018-07-25 08:45:53,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2018-07-25 08:45:53,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 315 transitions. [2018-07-25 08:45:53,763 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 315 transitions. Word has length 312 [2018-07-25 08:45:53,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:53,763 INFO L472 AbstractCegarLoop]: Abstraction has 315 states and 315 transitions. [2018-07-25 08:45:53,764 INFO L473 AbstractCegarLoop]: Interpolant automaton has 157 states. [2018-07-25 08:45:53,764 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 315 transitions. [2018-07-25 08:45:53,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-07-25 08:45:53,765 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:53,765 INFO L354 BasicCegarLoop]: trace histogram [156, 155, 1, 1, 1] [2018-07-25 08:45:53,765 INFO L415 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:53,766 INFO L82 PathProgramCache]: Analyzing trace with hash 313425381, now seen corresponding path program 155 times [2018-07-25 08:45:53,766 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:53,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:54,585 INFO L134 CoverageAnalysis]: Checked inductivity of 24180 backedges. 0 proven. 24180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:54,585 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:54,585 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [157] total 157 [2018-07-25 08:45:54,586 INFO L451 AbstractCegarLoop]: Interpolant automaton has 158 states [2018-07-25 08:45:54,587 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2018-07-25 08:45:54,588 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12403, Invalid=12403, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 08:45:54,588 INFO L87 Difference]: Start difference. First operand 315 states and 315 transitions. Second operand 158 states. [2018-07-25 08:45:55,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:55,080 INFO L93 Difference]: Finished difference Result 319 states and 319 transitions. [2018-07-25 08:45:55,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2018-07-25 08:45:55,080 INFO L78 Accepts]: Start accepts. Automaton has 158 states. Word has length 314 [2018-07-25 08:45:55,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:55,081 INFO L225 Difference]: With dead ends: 319 [2018-07-25 08:45:55,081 INFO L226 Difference]: Without dead ends: 317 [2018-07-25 08:45:55,083 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12403, Invalid=12403, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 08:45:55,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2018-07-25 08:45:55,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2018-07-25 08:45:55,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2018-07-25 08:45:55,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 317 transitions. [2018-07-25 08:45:55,086 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 317 transitions. Word has length 314 [2018-07-25 08:45:55,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:55,086 INFO L472 AbstractCegarLoop]: Abstraction has 317 states and 317 transitions. [2018-07-25 08:45:55,086 INFO L473 AbstractCegarLoop]: Interpolant automaton has 158 states. [2018-07-25 08:45:55,086 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 317 transitions. [2018-07-25 08:45:55,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-07-25 08:45:55,087 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:55,087 INFO L354 BasicCegarLoop]: trace histogram [157, 156, 1, 1, 1] [2018-07-25 08:45:55,087 INFO L415 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:55,088 INFO L82 PathProgramCache]: Analyzing trace with hash 554132511, now seen corresponding path program 156 times [2018-07-25 08:45:55,088 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:55,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:55,805 INFO L134 CoverageAnalysis]: Checked inductivity of 24492 backedges. 0 proven. 24492 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:55,805 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:55,806 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [158] total 158 [2018-07-25 08:45:55,806 INFO L451 AbstractCegarLoop]: Interpolant automaton has 159 states [2018-07-25 08:45:55,808 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 159 interpolants. [2018-07-25 08:45:55,809 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12561, Invalid=12561, Unknown=0, NotChecked=0, Total=25122 [2018-07-25 08:45:55,809 INFO L87 Difference]: Start difference. First operand 317 states and 317 transitions. Second operand 159 states. [2018-07-25 08:45:56,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:56,488 INFO L93 Difference]: Finished difference Result 321 states and 321 transitions. [2018-07-25 08:45:56,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2018-07-25 08:45:56,489 INFO L78 Accepts]: Start accepts. Automaton has 159 states. Word has length 316 [2018-07-25 08:45:56,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:56,490 INFO L225 Difference]: With dead ends: 321 [2018-07-25 08:45:56,490 INFO L226 Difference]: Without dead ends: 319 [2018-07-25 08:45:56,493 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12561, Invalid=12561, Unknown=0, NotChecked=0, Total=25122 [2018-07-25 08:45:56,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-07-25 08:45:56,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2018-07-25 08:45:56,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-07-25 08:45:56,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 319 transitions. [2018-07-25 08:45:56,499 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 319 transitions. Word has length 316 [2018-07-25 08:45:56,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:56,499 INFO L472 AbstractCegarLoop]: Abstraction has 319 states and 319 transitions. [2018-07-25 08:45:56,499 INFO L473 AbstractCegarLoop]: Interpolant automaton has 159 states. [2018-07-25 08:45:56,499 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 319 transitions. [2018-07-25 08:45:56,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-07-25 08:45:56,501 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:56,501 INFO L354 BasicCegarLoop]: trace histogram [158, 157, 1, 1, 1] [2018-07-25 08:45:56,501 INFO L415 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:56,501 INFO L82 PathProgramCache]: Analyzing trace with hash -54549543, now seen corresponding path program 157 times [2018-07-25 08:45:56,501 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:56,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:57,305 INFO L134 CoverageAnalysis]: Checked inductivity of 24806 backedges. 0 proven. 24806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:57,306 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:57,306 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [159] total 159 [2018-07-25 08:45:57,306 INFO L451 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-07-25 08:45:57,307 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-07-25 08:45:57,308 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12720, Invalid=12720, Unknown=0, NotChecked=0, Total=25440 [2018-07-25 08:45:57,308 INFO L87 Difference]: Start difference. First operand 319 states and 319 transitions. Second operand 160 states. [2018-07-25 08:45:58,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:58,145 INFO L93 Difference]: Finished difference Result 323 states and 323 transitions. [2018-07-25 08:45:58,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2018-07-25 08:45:58,145 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 318 [2018-07-25 08:45:58,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:58,146 INFO L225 Difference]: With dead ends: 323 [2018-07-25 08:45:58,146 INFO L226 Difference]: Without dead ends: 321 [2018-07-25 08:45:58,147 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12720, Invalid=12720, Unknown=0, NotChecked=0, Total=25440 [2018-07-25 08:45:58,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2018-07-25 08:45:58,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2018-07-25 08:45:58,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2018-07-25 08:45:58,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 321 transitions. [2018-07-25 08:45:58,151 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 321 transitions. Word has length 318 [2018-07-25 08:45:58,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:58,151 INFO L472 AbstractCegarLoop]: Abstraction has 321 states and 321 transitions. [2018-07-25 08:45:58,151 INFO L473 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-07-25 08:45:58,151 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 321 transitions. [2018-07-25 08:45:58,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2018-07-25 08:45:58,152 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:58,152 INFO L354 BasicCegarLoop]: trace histogram [159, 158, 1, 1, 1] [2018-07-25 08:45:58,152 INFO L415 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:58,152 INFO L82 PathProgramCache]: Analyzing trace with hash -882451181, now seen corresponding path program 158 times [2018-07-25 08:45:58,152 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:58,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:58,833 INFO L134 CoverageAnalysis]: Checked inductivity of 25122 backedges. 0 proven. 25122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:58,833 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:58,833 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [160] total 160 [2018-07-25 08:45:58,834 INFO L451 AbstractCegarLoop]: Interpolant automaton has 161 states [2018-07-25 08:45:58,835 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2018-07-25 08:45:58,836 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12880, Invalid=12880, Unknown=0, NotChecked=0, Total=25760 [2018-07-25 08:45:58,837 INFO L87 Difference]: Start difference. First operand 321 states and 321 transitions. Second operand 161 states. [2018-07-25 08:45:59,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:59,115 INFO L93 Difference]: Finished difference Result 325 states and 325 transitions. [2018-07-25 08:45:59,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2018-07-25 08:45:59,115 INFO L78 Accepts]: Start accepts. Automaton has 161 states. Word has length 320 [2018-07-25 08:45:59,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:59,116 INFO L225 Difference]: With dead ends: 325 [2018-07-25 08:45:59,116 INFO L226 Difference]: Without dead ends: 323 [2018-07-25 08:45:59,118 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12880, Invalid=12880, Unknown=0, NotChecked=0, Total=25760 [2018-07-25 08:45:59,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2018-07-25 08:45:59,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2018-07-25 08:45:59,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2018-07-25 08:45:59,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 323 transitions. [2018-07-25 08:45:59,121 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 323 transitions. Word has length 320 [2018-07-25 08:45:59,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:59,121 INFO L472 AbstractCegarLoop]: Abstraction has 323 states and 323 transitions. [2018-07-25 08:45:59,121 INFO L473 AbstractCegarLoop]: Interpolant automaton has 161 states. [2018-07-25 08:45:59,121 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 323 transitions. [2018-07-25 08:45:59,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-07-25 08:45:59,122 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:59,122 INFO L354 BasicCegarLoop]: trace histogram [160, 159, 1, 1, 1] [2018-07-25 08:45:59,122 INFO L415 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:59,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1926975539, now seen corresponding path program 159 times [2018-07-25 08:45:59,123 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:59,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:59,822 INFO L134 CoverageAnalysis]: Checked inductivity of 25440 backedges. 0 proven. 25440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:59,822 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:59,823 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [161] total 161 [2018-07-25 08:45:59,823 INFO L451 AbstractCegarLoop]: Interpolant automaton has 162 states [2018-07-25 08:45:59,825 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2018-07-25 08:45:59,826 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13041, Invalid=13041, Unknown=0, NotChecked=0, Total=26082 [2018-07-25 08:45:59,826 INFO L87 Difference]: Start difference. First operand 323 states and 323 transitions. Second operand 162 states. [2018-07-25 08:46:00,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:00,592 INFO L93 Difference]: Finished difference Result 327 states and 327 transitions. [2018-07-25 08:46:00,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2018-07-25 08:46:00,592 INFO L78 Accepts]: Start accepts. Automaton has 162 states. Word has length 322 [2018-07-25 08:46:00,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:00,593 INFO L225 Difference]: With dead ends: 327 [2018-07-25 08:46:00,593 INFO L226 Difference]: Without dead ends: 325 [2018-07-25 08:46:00,594 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13041, Invalid=13041, Unknown=0, NotChecked=0, Total=26082 [2018-07-25 08:46:00,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2018-07-25 08:46:00,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2018-07-25 08:46:00,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2018-07-25 08:46:00,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 325 transitions. [2018-07-25 08:46:00,598 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 325 transitions. Word has length 322 [2018-07-25 08:46:00,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:00,598 INFO L472 AbstractCegarLoop]: Abstraction has 325 states and 325 transitions. [2018-07-25 08:46:00,598 INFO L473 AbstractCegarLoop]: Interpolant automaton has 162 states. [2018-07-25 08:46:00,598 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 325 transitions. [2018-07-25 08:46:00,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2018-07-25 08:46:00,599 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:00,599 INFO L354 BasicCegarLoop]: trace histogram [161, 160, 1, 1, 1] [2018-07-25 08:46:00,599 INFO L415 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:00,600 INFO L82 PathProgramCache]: Analyzing trace with hash -692536313, now seen corresponding path program 160 times [2018-07-25 08:46:00,600 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:00,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:01,380 INFO L134 CoverageAnalysis]: Checked inductivity of 25760 backedges. 0 proven. 25760 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:01,380 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:01,380 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [162] total 162 [2018-07-25 08:46:01,381 INFO L451 AbstractCegarLoop]: Interpolant automaton has 163 states [2018-07-25 08:46:01,382 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants. [2018-07-25 08:46:01,382 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13203, Invalid=13203, Unknown=0, NotChecked=0, Total=26406 [2018-07-25 08:46:01,383 INFO L87 Difference]: Start difference. First operand 325 states and 325 transitions. Second operand 163 states. [2018-07-25 08:46:02,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:02,242 INFO L93 Difference]: Finished difference Result 329 states and 329 transitions. [2018-07-25 08:46:02,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2018-07-25 08:46:02,242 INFO L78 Accepts]: Start accepts. Automaton has 163 states. Word has length 324 [2018-07-25 08:46:02,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:02,243 INFO L225 Difference]: With dead ends: 329 [2018-07-25 08:46:02,243 INFO L226 Difference]: Without dead ends: 327 [2018-07-25 08:46:02,244 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13203, Invalid=13203, Unknown=0, NotChecked=0, Total=26406 [2018-07-25 08:46:02,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-07-25 08:46:02,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2018-07-25 08:46:02,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2018-07-25 08:46:02,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 327 transitions. [2018-07-25 08:46:02,248 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 327 transitions. Word has length 324 [2018-07-25 08:46:02,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:02,249 INFO L472 AbstractCegarLoop]: Abstraction has 327 states and 327 transitions. [2018-07-25 08:46:02,249 INFO L473 AbstractCegarLoop]: Interpolant automaton has 163 states. [2018-07-25 08:46:02,249 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 327 transitions. [2018-07-25 08:46:02,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-07-25 08:46:02,250 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:02,251 INFO L354 BasicCegarLoop]: trace histogram [162, 161, 1, 1, 1] [2018-07-25 08:46:02,251 INFO L415 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:02,251 INFO L82 PathProgramCache]: Analyzing trace with hash 192586177, now seen corresponding path program 161 times [2018-07-25 08:46:02,251 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:02,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:03,133 INFO L134 CoverageAnalysis]: Checked inductivity of 26082 backedges. 0 proven. 26082 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:03,133 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:03,133 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [163] total 163 [2018-07-25 08:46:03,133 INFO L451 AbstractCegarLoop]: Interpolant automaton has 164 states [2018-07-25 08:46:03,135 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2018-07-25 08:46:03,137 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13366, Invalid=13366, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 08:46:03,137 INFO L87 Difference]: Start difference. First operand 327 states and 327 transitions. Second operand 164 states. [2018-07-25 08:46:03,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:03,875 INFO L93 Difference]: Finished difference Result 331 states and 331 transitions. [2018-07-25 08:46:03,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2018-07-25 08:46:03,876 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 326 [2018-07-25 08:46:03,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:03,876 INFO L225 Difference]: With dead ends: 331 [2018-07-25 08:46:03,876 INFO L226 Difference]: Without dead ends: 329 [2018-07-25 08:46:03,878 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13366, Invalid=13366, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 08:46:03,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2018-07-25 08:46:03,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2018-07-25 08:46:03,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2018-07-25 08:46:03,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 329 transitions. [2018-07-25 08:46:03,882 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 329 transitions. Word has length 326 [2018-07-25 08:46:03,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:03,882 INFO L472 AbstractCegarLoop]: Abstraction has 329 states and 329 transitions. [2018-07-25 08:46:03,882 INFO L473 AbstractCegarLoop]: Interpolant automaton has 164 states. [2018-07-25 08:46:03,882 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 329 transitions. [2018-07-25 08:46:03,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-07-25 08:46:03,883 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:03,883 INFO L354 BasicCegarLoop]: trace histogram [163, 162, 1, 1, 1] [2018-07-25 08:46:03,883 INFO L415 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:03,883 INFO L82 PathProgramCache]: Analyzing trace with hash 391774459, now seen corresponding path program 162 times [2018-07-25 08:46:03,883 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:03,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:04,621 INFO L134 CoverageAnalysis]: Checked inductivity of 26406 backedges. 0 proven. 26406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:04,622 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:04,622 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [164] total 164 [2018-07-25 08:46:04,622 INFO L451 AbstractCegarLoop]: Interpolant automaton has 165 states [2018-07-25 08:46:04,624 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 165 interpolants. [2018-07-25 08:46:04,625 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13530, Invalid=13530, Unknown=0, NotChecked=0, Total=27060 [2018-07-25 08:46:04,626 INFO L87 Difference]: Start difference. First operand 329 states and 329 transitions. Second operand 165 states. [2018-07-25 08:46:04,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:04,906 INFO L93 Difference]: Finished difference Result 333 states and 333 transitions. [2018-07-25 08:46:04,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2018-07-25 08:46:04,906 INFO L78 Accepts]: Start accepts. Automaton has 165 states. Word has length 328 [2018-07-25 08:46:04,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:04,907 INFO L225 Difference]: With dead ends: 333 [2018-07-25 08:46:04,907 INFO L226 Difference]: Without dead ends: 331 [2018-07-25 08:46:04,909 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13530, Invalid=13530, Unknown=0, NotChecked=0, Total=27060 [2018-07-25 08:46:04,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2018-07-25 08:46:04,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2018-07-25 08:46:04,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-07-25 08:46:04,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 331 transitions. [2018-07-25 08:46:04,912 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 331 transitions. Word has length 328 [2018-07-25 08:46:04,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:04,913 INFO L472 AbstractCegarLoop]: Abstraction has 331 states and 331 transitions. [2018-07-25 08:46:04,913 INFO L473 AbstractCegarLoop]: Interpolant automaton has 165 states. [2018-07-25 08:46:04,913 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 331 transitions. [2018-07-25 08:46:04,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-07-25 08:46:04,914 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:04,914 INFO L354 BasicCegarLoop]: trace histogram [164, 163, 1, 1, 1] [2018-07-25 08:46:04,914 INFO L415 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:04,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1461814859, now seen corresponding path program 163 times [2018-07-25 08:46:04,914 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:05,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:05,737 INFO L134 CoverageAnalysis]: Checked inductivity of 26732 backedges. 0 proven. 26732 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:05,737 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:05,738 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [165] total 165 [2018-07-25 08:46:05,738 INFO L451 AbstractCegarLoop]: Interpolant automaton has 166 states [2018-07-25 08:46:05,739 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2018-07-25 08:46:05,739 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13695, Invalid=13695, Unknown=0, NotChecked=0, Total=27390 [2018-07-25 08:46:05,740 INFO L87 Difference]: Start difference. First operand 331 states and 331 transitions. Second operand 166 states. [2018-07-25 08:46:06,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:06,189 INFO L93 Difference]: Finished difference Result 335 states and 335 transitions. [2018-07-25 08:46:06,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2018-07-25 08:46:06,190 INFO L78 Accepts]: Start accepts. Automaton has 166 states. Word has length 330 [2018-07-25 08:46:06,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:06,190 INFO L225 Difference]: With dead ends: 335 [2018-07-25 08:46:06,190 INFO L226 Difference]: Without dead ends: 333 [2018-07-25 08:46:06,191 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13695, Invalid=13695, Unknown=0, NotChecked=0, Total=27390 [2018-07-25 08:46:06,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2018-07-25 08:46:06,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2018-07-25 08:46:06,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2018-07-25 08:46:06,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 333 transitions. [2018-07-25 08:46:06,194 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 333 transitions. Word has length 330 [2018-07-25 08:46:06,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:06,194 INFO L472 AbstractCegarLoop]: Abstraction has 333 states and 333 transitions. [2018-07-25 08:46:06,194 INFO L473 AbstractCegarLoop]: Interpolant automaton has 166 states. [2018-07-25 08:46:06,195 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 333 transitions. [2018-07-25 08:46:06,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2018-07-25 08:46:06,195 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:06,195 INFO L354 BasicCegarLoop]: trace histogram [165, 164, 1, 1, 1] [2018-07-25 08:46:06,196 INFO L415 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:06,196 INFO L82 PathProgramCache]: Analyzing trace with hash -349721617, now seen corresponding path program 164 times [2018-07-25 08:46:06,196 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:06,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:06,979 INFO L134 CoverageAnalysis]: Checked inductivity of 27060 backedges. 0 proven. 27060 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:06,980 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:06,980 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [166] total 166 [2018-07-25 08:46:06,980 INFO L451 AbstractCegarLoop]: Interpolant automaton has 167 states [2018-07-25 08:46:06,983 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 167 interpolants. [2018-07-25 08:46:06,984 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13861, Invalid=13861, Unknown=0, NotChecked=0, Total=27722 [2018-07-25 08:46:06,984 INFO L87 Difference]: Start difference. First operand 333 states and 333 transitions. Second operand 167 states. [2018-07-25 08:46:07,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:07,848 INFO L93 Difference]: Finished difference Result 337 states and 337 transitions. [2018-07-25 08:46:07,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2018-07-25 08:46:07,849 INFO L78 Accepts]: Start accepts. Automaton has 167 states. Word has length 332 [2018-07-25 08:46:07,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:07,849 INFO L225 Difference]: With dead ends: 337 [2018-07-25 08:46:07,849 INFO L226 Difference]: Without dead ends: 335 [2018-07-25 08:46:07,851 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13861, Invalid=13861, Unknown=0, NotChecked=0, Total=27722 [2018-07-25 08:46:07,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2018-07-25 08:46:07,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2018-07-25 08:46:07,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2018-07-25 08:46:07,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 335 transitions. [2018-07-25 08:46:07,855 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 335 transitions. Word has length 332 [2018-07-25 08:46:07,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:07,855 INFO L472 AbstractCegarLoop]: Abstraction has 335 states and 335 transitions. [2018-07-25 08:46:07,855 INFO L473 AbstractCegarLoop]: Interpolant automaton has 167 states. [2018-07-25 08:46:07,855 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 335 transitions. [2018-07-25 08:46:07,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-07-25 08:46:07,856 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:07,856 INFO L354 BasicCegarLoop]: trace histogram [166, 165, 1, 1, 1] [2018-07-25 08:46:07,856 INFO L415 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:07,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1074972759, now seen corresponding path program 165 times [2018-07-25 08:46:07,857 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:07,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:08,629 INFO L134 CoverageAnalysis]: Checked inductivity of 27390 backedges. 0 proven. 27390 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:08,629 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:08,629 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [167] total 167 [2018-07-25 08:46:08,630 INFO L451 AbstractCegarLoop]: Interpolant automaton has 168 states [2018-07-25 08:46:08,632 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2018-07-25 08:46:08,634 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14028, Invalid=14028, Unknown=0, NotChecked=0, Total=28056 [2018-07-25 08:46:08,634 INFO L87 Difference]: Start difference. First operand 335 states and 335 transitions. Second operand 168 states. [2018-07-25 08:46:09,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:09,568 INFO L93 Difference]: Finished difference Result 339 states and 339 transitions. [2018-07-25 08:46:09,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2018-07-25 08:46:09,568 INFO L78 Accepts]: Start accepts. Automaton has 168 states. Word has length 334 [2018-07-25 08:46:09,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:09,569 INFO L225 Difference]: With dead ends: 339 [2018-07-25 08:46:09,569 INFO L226 Difference]: Without dead ends: 337 [2018-07-25 08:46:09,571 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14028, Invalid=14028, Unknown=0, NotChecked=0, Total=28056 [2018-07-25 08:46:09,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2018-07-25 08:46:09,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2018-07-25 08:46:09,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2018-07-25 08:46:09,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 337 transitions. [2018-07-25 08:46:09,574 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 337 transitions. Word has length 334 [2018-07-25 08:46:09,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:09,574 INFO L472 AbstractCegarLoop]: Abstraction has 337 states and 337 transitions. [2018-07-25 08:46:09,574 INFO L473 AbstractCegarLoop]: Interpolant automaton has 168 states. [2018-07-25 08:46:09,574 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 337 transitions. [2018-07-25 08:46:09,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2018-07-25 08:46:09,575 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:09,575 INFO L354 BasicCegarLoop]: trace histogram [167, 166, 1, 1, 1] [2018-07-25 08:46:09,575 INFO L415 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:09,575 INFO L82 PathProgramCache]: Analyzing trace with hash 2038349027, now seen corresponding path program 166 times [2018-07-25 08:46:09,576 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:09,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:10,441 INFO L134 CoverageAnalysis]: Checked inductivity of 27722 backedges. 0 proven. 27722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:10,442 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:10,442 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [168] total 168 [2018-07-25 08:46:10,442 INFO L451 AbstractCegarLoop]: Interpolant automaton has 169 states [2018-07-25 08:46:10,443 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 169 interpolants. [2018-07-25 08:46:10,444 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14196, Invalid=14196, Unknown=0, NotChecked=0, Total=28392 [2018-07-25 08:46:10,444 INFO L87 Difference]: Start difference. First operand 337 states and 337 transitions. Second operand 169 states. [2018-07-25 08:46:11,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:11,348 INFO L93 Difference]: Finished difference Result 341 states and 341 transitions. [2018-07-25 08:46:11,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2018-07-25 08:46:11,348 INFO L78 Accepts]: Start accepts. Automaton has 169 states. Word has length 336 [2018-07-25 08:46:11,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:11,349 INFO L225 Difference]: With dead ends: 341 [2018-07-25 08:46:11,349 INFO L226 Difference]: Without dead ends: 339 [2018-07-25 08:46:11,350 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14196, Invalid=14196, Unknown=0, NotChecked=0, Total=28392 [2018-07-25 08:46:11,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2018-07-25 08:46:11,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 339. [2018-07-25 08:46:11,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2018-07-25 08:46:11,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 339 transitions. [2018-07-25 08:46:11,353 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 339 transitions. Word has length 336 [2018-07-25 08:46:11,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:11,353 INFO L472 AbstractCegarLoop]: Abstraction has 339 states and 339 transitions. [2018-07-25 08:46:11,354 INFO L473 AbstractCegarLoop]: Interpolant automaton has 169 states. [2018-07-25 08:46:11,354 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 339 transitions. [2018-07-25 08:46:11,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-07-25 08:46:11,354 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:11,355 INFO L354 BasicCegarLoop]: trace histogram [168, 167, 1, 1, 1] [2018-07-25 08:46:11,355 INFO L415 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:11,355 INFO L82 PathProgramCache]: Analyzing trace with hash 348380061, now seen corresponding path program 167 times [2018-07-25 08:46:11,355 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:11,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:12,218 INFO L134 CoverageAnalysis]: Checked inductivity of 28056 backedges. 0 proven. 28056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:12,219 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:12,219 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [169] total 169 [2018-07-25 08:46:12,219 INFO L451 AbstractCegarLoop]: Interpolant automaton has 170 states [2018-07-25 08:46:12,222 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants. [2018-07-25 08:46:12,224 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14365, Invalid=14365, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 08:46:12,224 INFO L87 Difference]: Start difference. First operand 339 states and 339 transitions. Second operand 170 states. [2018-07-25 08:46:13,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:13,246 INFO L93 Difference]: Finished difference Result 343 states and 343 transitions. [2018-07-25 08:46:13,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2018-07-25 08:46:13,247 INFO L78 Accepts]: Start accepts. Automaton has 170 states. Word has length 338 [2018-07-25 08:46:13,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:13,247 INFO L225 Difference]: With dead ends: 343 [2018-07-25 08:46:13,247 INFO L226 Difference]: Without dead ends: 341 [2018-07-25 08:46:13,249 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14365, Invalid=14365, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 08:46:13,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2018-07-25 08:46:13,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2018-07-25 08:46:13,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2018-07-25 08:46:13,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 341 transitions. [2018-07-25 08:46:13,252 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 341 transitions. Word has length 338 [2018-07-25 08:46:13,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:13,253 INFO L472 AbstractCegarLoop]: Abstraction has 341 states and 341 transitions. [2018-07-25 08:46:13,253 INFO L473 AbstractCegarLoop]: Interpolant automaton has 170 states. [2018-07-25 08:46:13,253 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 341 transitions. [2018-07-25 08:46:13,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2018-07-25 08:46:13,254 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:13,254 INFO L354 BasicCegarLoop]: trace histogram [169, 168, 1, 1, 1] [2018-07-25 08:46:13,254 INFO L415 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:13,254 INFO L82 PathProgramCache]: Analyzing trace with hash -214158377, now seen corresponding path program 168 times [2018-07-25 08:46:13,254 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:13,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:14,041 INFO L134 CoverageAnalysis]: Checked inductivity of 28392 backedges. 0 proven. 28392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:14,041 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:14,041 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [170] total 170 [2018-07-25 08:46:14,042 INFO L451 AbstractCegarLoop]: Interpolant automaton has 171 states [2018-07-25 08:46:14,045 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 171 interpolants. [2018-07-25 08:46:14,046 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14535, Invalid=14535, Unknown=0, NotChecked=0, Total=29070 [2018-07-25 08:46:14,047 INFO L87 Difference]: Start difference. First operand 341 states and 341 transitions. Second operand 171 states. [2018-07-25 08:46:15,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:15,076 INFO L93 Difference]: Finished difference Result 345 states and 345 transitions. [2018-07-25 08:46:15,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2018-07-25 08:46:15,076 INFO L78 Accepts]: Start accepts. Automaton has 171 states. Word has length 340 [2018-07-25 08:46:15,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:15,077 INFO L225 Difference]: With dead ends: 345 [2018-07-25 08:46:15,077 INFO L226 Difference]: Without dead ends: 343 [2018-07-25 08:46:15,078 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14535, Invalid=14535, Unknown=0, NotChecked=0, Total=29070 [2018-07-25 08:46:15,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2018-07-25 08:46:15,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2018-07-25 08:46:15,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2018-07-25 08:46:15,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 343 transitions. [2018-07-25 08:46:15,082 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 343 transitions. Word has length 340 [2018-07-25 08:46:15,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:15,082 INFO L472 AbstractCegarLoop]: Abstraction has 343 states and 343 transitions. [2018-07-25 08:46:15,082 INFO L473 AbstractCegarLoop]: Interpolant automaton has 171 states. [2018-07-25 08:46:15,082 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 343 transitions. [2018-07-25 08:46:15,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-07-25 08:46:15,083 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:15,083 INFO L354 BasicCegarLoop]: trace histogram [170, 169, 1, 1, 1] [2018-07-25 08:46:15,083 INFO L415 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:15,084 INFO L82 PathProgramCache]: Analyzing trace with hash 352282001, now seen corresponding path program 169 times [2018-07-25 08:46:15,084 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:15,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:15,890 INFO L134 CoverageAnalysis]: Checked inductivity of 28730 backedges. 0 proven. 28730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:15,890 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:15,890 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [171] total 171 [2018-07-25 08:46:15,891 INFO L451 AbstractCegarLoop]: Interpolant automaton has 172 states [2018-07-25 08:46:15,892 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2018-07-25 08:46:15,892 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14706, Invalid=14706, Unknown=0, NotChecked=0, Total=29412 [2018-07-25 08:46:15,892 INFO L87 Difference]: Start difference. First operand 343 states and 343 transitions. Second operand 172 states. [2018-07-25 08:46:16,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:16,863 INFO L93 Difference]: Finished difference Result 347 states and 347 transitions. [2018-07-25 08:46:16,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2018-07-25 08:46:16,863 INFO L78 Accepts]: Start accepts. Automaton has 172 states. Word has length 342 [2018-07-25 08:46:16,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:16,864 INFO L225 Difference]: With dead ends: 347 [2018-07-25 08:46:16,864 INFO L226 Difference]: Without dead ends: 345 [2018-07-25 08:46:16,865 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14706, Invalid=14706, Unknown=0, NotChecked=0, Total=29412 [2018-07-25 08:46:16,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2018-07-25 08:46:16,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2018-07-25 08:46:16,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2018-07-25 08:46:16,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 345 transitions. [2018-07-25 08:46:16,868 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 345 transitions. Word has length 342 [2018-07-25 08:46:16,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:16,868 INFO L472 AbstractCegarLoop]: Abstraction has 345 states and 345 transitions. [2018-07-25 08:46:16,868 INFO L473 AbstractCegarLoop]: Interpolant automaton has 172 states. [2018-07-25 08:46:16,868 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 345 transitions. [2018-07-25 08:46:16,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2018-07-25 08:46:16,869 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:16,869 INFO L354 BasicCegarLoop]: trace histogram [171, 170, 1, 1, 1] [2018-07-25 08:46:16,869 INFO L415 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:16,869 INFO L82 PathProgramCache]: Analyzing trace with hash -759361333, now seen corresponding path program 170 times [2018-07-25 08:46:16,869 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:16,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:17,656 INFO L134 CoverageAnalysis]: Checked inductivity of 29070 backedges. 0 proven. 29070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:17,657 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:17,657 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [172] total 172 [2018-07-25 08:46:17,657 INFO L451 AbstractCegarLoop]: Interpolant automaton has 173 states [2018-07-25 08:46:17,660 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 173 interpolants. [2018-07-25 08:46:17,661 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14878, Invalid=14878, Unknown=0, NotChecked=0, Total=29756 [2018-07-25 08:46:17,661 INFO L87 Difference]: Start difference. First operand 345 states and 345 transitions. Second operand 173 states. [2018-07-25 08:46:18,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:18,690 INFO L93 Difference]: Finished difference Result 349 states and 349 transitions. [2018-07-25 08:46:18,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2018-07-25 08:46:18,690 INFO L78 Accepts]: Start accepts. Automaton has 173 states. Word has length 344 [2018-07-25 08:46:18,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:18,691 INFO L225 Difference]: With dead ends: 349 [2018-07-25 08:46:18,691 INFO L226 Difference]: Without dead ends: 347 [2018-07-25 08:46:18,694 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14878, Invalid=14878, Unknown=0, NotChecked=0, Total=29756 [2018-07-25 08:46:18,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2018-07-25 08:46:18,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2018-07-25 08:46:18,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2018-07-25 08:46:18,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 347 transitions. [2018-07-25 08:46:18,698 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 347 transitions. Word has length 344 [2018-07-25 08:46:18,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:18,698 INFO L472 AbstractCegarLoop]: Abstraction has 347 states and 347 transitions. [2018-07-25 08:46:18,698 INFO L473 AbstractCegarLoop]: Interpolant automaton has 173 states. [2018-07-25 08:46:18,699 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 347 transitions. [2018-07-25 08:46:18,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-07-25 08:46:18,699 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:18,700 INFO L354 BasicCegarLoop]: trace histogram [172, 171, 1, 1, 1] [2018-07-25 08:46:18,700 INFO L415 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:18,700 INFO L82 PathProgramCache]: Analyzing trace with hash 398251397, now seen corresponding path program 171 times [2018-07-25 08:46:18,700 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:18,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:19,516 INFO L134 CoverageAnalysis]: Checked inductivity of 29412 backedges. 0 proven. 29412 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:19,516 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:19,516 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [173] total 173 [2018-07-25 08:46:19,516 INFO L451 AbstractCegarLoop]: Interpolant automaton has 174 states [2018-07-25 08:46:19,519 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 174 interpolants. [2018-07-25 08:46:19,520 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15051, Invalid=15051, Unknown=0, NotChecked=0, Total=30102 [2018-07-25 08:46:19,520 INFO L87 Difference]: Start difference. First operand 347 states and 347 transitions. Second operand 174 states. [2018-07-25 08:46:20,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:20,231 INFO L93 Difference]: Finished difference Result 351 states and 351 transitions. [2018-07-25 08:46:20,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2018-07-25 08:46:20,232 INFO L78 Accepts]: Start accepts. Automaton has 174 states. Word has length 346 [2018-07-25 08:46:20,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:20,232 INFO L225 Difference]: With dead ends: 351 [2018-07-25 08:46:20,232 INFO L226 Difference]: Without dead ends: 349 [2018-07-25 08:46:20,234 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15051, Invalid=15051, Unknown=0, NotChecked=0, Total=30102 [2018-07-25 08:46:20,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2018-07-25 08:46:20,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 349. [2018-07-25 08:46:20,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2018-07-25 08:46:20,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 349 transitions. [2018-07-25 08:46:20,238 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 349 transitions. Word has length 346 [2018-07-25 08:46:20,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:20,238 INFO L472 AbstractCegarLoop]: Abstraction has 349 states and 349 transitions. [2018-07-25 08:46:20,238 INFO L473 AbstractCegarLoop]: Interpolant automaton has 174 states. [2018-07-25 08:46:20,238 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 349 transitions. [2018-07-25 08:46:20,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2018-07-25 08:46:20,239 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:20,239 INFO L354 BasicCegarLoop]: trace histogram [173, 172, 1, 1, 1] [2018-07-25 08:46:20,239 INFO L415 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:20,239 INFO L82 PathProgramCache]: Analyzing trace with hash 467555263, now seen corresponding path program 172 times [2018-07-25 08:46:20,239 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:20,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:21,060 INFO L134 CoverageAnalysis]: Checked inductivity of 29756 backedges. 0 proven. 29756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:21,060 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:21,060 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [174] total 174 [2018-07-25 08:46:21,061 INFO L451 AbstractCegarLoop]: Interpolant automaton has 175 states [2018-07-25 08:46:21,062 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 175 interpolants. [2018-07-25 08:46:21,063 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15225, Invalid=15225, Unknown=0, NotChecked=0, Total=30450 [2018-07-25 08:46:21,063 INFO L87 Difference]: Start difference. First operand 349 states and 349 transitions. Second operand 175 states. [2018-07-25 08:46:21,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:21,392 INFO L93 Difference]: Finished difference Result 353 states and 353 transitions. [2018-07-25 08:46:21,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2018-07-25 08:46:21,393 INFO L78 Accepts]: Start accepts. Automaton has 175 states. Word has length 348 [2018-07-25 08:46:21,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:21,393 INFO L225 Difference]: With dead ends: 353 [2018-07-25 08:46:21,393 INFO L226 Difference]: Without dead ends: 351 [2018-07-25 08:46:21,395 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15225, Invalid=15225, Unknown=0, NotChecked=0, Total=30450 [2018-07-25 08:46:21,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2018-07-25 08:46:21,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2018-07-25 08:46:21,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2018-07-25 08:46:21,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 351 transitions. [2018-07-25 08:46:21,398 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 351 transitions. Word has length 348 [2018-07-25 08:46:21,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:21,399 INFO L472 AbstractCegarLoop]: Abstraction has 351 states and 351 transitions. [2018-07-25 08:46:21,399 INFO L473 AbstractCegarLoop]: Interpolant automaton has 175 states. [2018-07-25 08:46:21,399 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 351 transitions. [2018-07-25 08:46:21,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-07-25 08:46:21,400 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:21,400 INFO L354 BasicCegarLoop]: trace histogram [174, 173, 1, 1, 1] [2018-07-25 08:46:21,400 INFO L415 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:21,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1650906247, now seen corresponding path program 173 times [2018-07-25 08:46:21,400 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:21,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:22,220 INFO L134 CoverageAnalysis]: Checked inductivity of 30102 backedges. 0 proven. 30102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:22,221 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:22,221 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [175] total 175 [2018-07-25 08:46:22,221 INFO L451 AbstractCegarLoop]: Interpolant automaton has 176 states [2018-07-25 08:46:22,223 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2018-07-25 08:46:22,226 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15400, Invalid=15400, Unknown=0, NotChecked=0, Total=30800 [2018-07-25 08:46:22,226 INFO L87 Difference]: Start difference. First operand 351 states and 351 transitions. Second operand 176 states. [2018-07-25 08:46:22,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:22,785 INFO L93 Difference]: Finished difference Result 355 states and 355 transitions. [2018-07-25 08:46:22,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2018-07-25 08:46:22,785 INFO L78 Accepts]: Start accepts. Automaton has 176 states. Word has length 350 [2018-07-25 08:46:22,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:22,786 INFO L225 Difference]: With dead ends: 355 [2018-07-25 08:46:22,786 INFO L226 Difference]: Without dead ends: 353 [2018-07-25 08:46:22,788 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15400, Invalid=15400, Unknown=0, NotChecked=0, Total=30800 [2018-07-25 08:46:22,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2018-07-25 08:46:22,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 353. [2018-07-25 08:46:22,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2018-07-25 08:46:22,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 353 transitions. [2018-07-25 08:46:22,791 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 353 transitions. Word has length 350 [2018-07-25 08:46:22,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:22,792 INFO L472 AbstractCegarLoop]: Abstraction has 353 states and 353 transitions. [2018-07-25 08:46:22,792 INFO L473 AbstractCegarLoop]: Interpolant automaton has 176 states. [2018-07-25 08:46:22,792 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 353 transitions. [2018-07-25 08:46:22,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2018-07-25 08:46:22,793 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:22,793 INFO L354 BasicCegarLoop]: trace histogram [175, 174, 1, 1, 1] [2018-07-25 08:46:22,793 INFO L415 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:22,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1677919053, now seen corresponding path program 174 times [2018-07-25 08:46:22,793 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:22,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:23,615 INFO L134 CoverageAnalysis]: Checked inductivity of 30450 backedges. 0 proven. 30450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:23,615 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:23,615 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [176] total 176 [2018-07-25 08:46:23,615 INFO L451 AbstractCegarLoop]: Interpolant automaton has 177 states [2018-07-25 08:46:23,617 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 177 interpolants. [2018-07-25 08:46:23,618 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15576, Invalid=15576, Unknown=0, NotChecked=0, Total=31152 [2018-07-25 08:46:23,619 INFO L87 Difference]: Start difference. First operand 353 states and 353 transitions. Second operand 177 states. [2018-07-25 08:46:24,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:24,915 INFO L93 Difference]: Finished difference Result 357 states and 357 transitions. [2018-07-25 08:46:24,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2018-07-25 08:46:24,915 INFO L78 Accepts]: Start accepts. Automaton has 177 states. Word has length 352 [2018-07-25 08:46:24,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:24,916 INFO L225 Difference]: With dead ends: 357 [2018-07-25 08:46:24,916 INFO L226 Difference]: Without dead ends: 355 [2018-07-25 08:46:24,917 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15576, Invalid=15576, Unknown=0, NotChecked=0, Total=31152 [2018-07-25 08:46:24,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2018-07-25 08:46:24,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 355. [2018-07-25 08:46:24,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2018-07-25 08:46:24,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 355 transitions. [2018-07-25 08:46:24,921 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 355 transitions. Word has length 352 [2018-07-25 08:46:24,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:24,921 INFO L472 AbstractCegarLoop]: Abstraction has 355 states and 355 transitions. [2018-07-25 08:46:24,921 INFO L473 AbstractCegarLoop]: Interpolant automaton has 177 states. [2018-07-25 08:46:24,921 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 355 transitions. [2018-07-25 08:46:24,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-07-25 08:46:24,922 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:24,922 INFO L354 BasicCegarLoop]: trace histogram [176, 175, 1, 1, 1] [2018-07-25 08:46:24,922 INFO L415 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:24,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1867421843, now seen corresponding path program 175 times [2018-07-25 08:46:24,923 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:25,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:25,798 INFO L134 CoverageAnalysis]: Checked inductivity of 30800 backedges. 0 proven. 30800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:25,798 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:25,798 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [177] total 177 [2018-07-25 08:46:25,799 INFO L451 AbstractCegarLoop]: Interpolant automaton has 178 states [2018-07-25 08:46:25,801 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 178 interpolants. [2018-07-25 08:46:25,803 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15753, Invalid=15753, Unknown=0, NotChecked=0, Total=31506 [2018-07-25 08:46:25,803 INFO L87 Difference]: Start difference. First operand 355 states and 355 transitions. Second operand 178 states. [2018-07-25 08:46:27,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:27,003 INFO L93 Difference]: Finished difference Result 359 states and 359 transitions. [2018-07-25 08:46:27,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2018-07-25 08:46:27,003 INFO L78 Accepts]: Start accepts. Automaton has 178 states. Word has length 354 [2018-07-25 08:46:27,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:27,004 INFO L225 Difference]: With dead ends: 359 [2018-07-25 08:46:27,004 INFO L226 Difference]: Without dead ends: 357 [2018-07-25 08:46:27,006 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15753, Invalid=15753, Unknown=0, NotChecked=0, Total=31506 [2018-07-25 08:46:27,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2018-07-25 08:46:27,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2018-07-25 08:46:27,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2018-07-25 08:46:27,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 357 transitions. [2018-07-25 08:46:27,010 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 357 transitions. Word has length 354 [2018-07-25 08:46:27,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:27,010 INFO L472 AbstractCegarLoop]: Abstraction has 357 states and 357 transitions. [2018-07-25 08:46:27,010 INFO L473 AbstractCegarLoop]: Interpolant automaton has 178 states. [2018-07-25 08:46:27,011 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 357 transitions. [2018-07-25 08:46:27,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2018-07-25 08:46:27,011 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:27,012 INFO L354 BasicCegarLoop]: trace histogram [177, 176, 1, 1, 1] [2018-07-25 08:46:27,012 INFO L415 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:27,012 INFO L82 PathProgramCache]: Analyzing trace with hash 703990695, now seen corresponding path program 176 times [2018-07-25 08:46:27,012 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:27,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:27,897 INFO L134 CoverageAnalysis]: Checked inductivity of 31152 backedges. 0 proven. 31152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:27,898 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:27,898 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [178] total 178 [2018-07-25 08:46:27,898 INFO L451 AbstractCegarLoop]: Interpolant automaton has 179 states [2018-07-25 08:46:27,900 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 179 interpolants. [2018-07-25 08:46:27,902 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15931, Invalid=15931, Unknown=0, NotChecked=0, Total=31862 [2018-07-25 08:46:27,902 INFO L87 Difference]: Start difference. First operand 357 states and 357 transitions. Second operand 179 states. [2018-07-25 08:46:28,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:28,366 INFO L93 Difference]: Finished difference Result 361 states and 361 transitions. [2018-07-25 08:46:28,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2018-07-25 08:46:28,366 INFO L78 Accepts]: Start accepts. Automaton has 179 states. Word has length 356 [2018-07-25 08:46:28,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:28,367 INFO L225 Difference]: With dead ends: 361 [2018-07-25 08:46:28,367 INFO L226 Difference]: Without dead ends: 359 [2018-07-25 08:46:28,370 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15931, Invalid=15931, Unknown=0, NotChecked=0, Total=31862 [2018-07-25 08:46:28,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2018-07-25 08:46:28,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2018-07-25 08:46:28,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2018-07-25 08:46:28,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 359 transitions. [2018-07-25 08:46:28,373 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 359 transitions. Word has length 356 [2018-07-25 08:46:28,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:28,374 INFO L472 AbstractCegarLoop]: Abstraction has 359 states and 359 transitions. [2018-07-25 08:46:28,374 INFO L473 AbstractCegarLoop]: Interpolant automaton has 179 states. [2018-07-25 08:46:28,374 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 359 transitions. [2018-07-25 08:46:28,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-07-25 08:46:28,375 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:28,375 INFO L354 BasicCegarLoop]: trace histogram [178, 177, 1, 1, 1] [2018-07-25 08:46:28,375 INFO L415 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:28,375 INFO L82 PathProgramCache]: Analyzing trace with hash -2069722783, now seen corresponding path program 177 times [2018-07-25 08:46:28,375 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:28,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:29,297 INFO L134 CoverageAnalysis]: Checked inductivity of 31506 backedges. 0 proven. 31506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:29,297 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:29,297 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [179] total 179 [2018-07-25 08:46:29,297 INFO L451 AbstractCegarLoop]: Interpolant automaton has 180 states [2018-07-25 08:46:29,298 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2018-07-25 08:46:29,299 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16110, Invalid=16110, Unknown=0, NotChecked=0, Total=32220 [2018-07-25 08:46:29,299 INFO L87 Difference]: Start difference. First operand 359 states and 359 transitions. Second operand 180 states. [2018-07-25 08:46:30,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:30,186 INFO L93 Difference]: Finished difference Result 363 states and 363 transitions. [2018-07-25 08:46:30,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2018-07-25 08:46:30,186 INFO L78 Accepts]: Start accepts. Automaton has 180 states. Word has length 358 [2018-07-25 08:46:30,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:30,187 INFO L225 Difference]: With dead ends: 363 [2018-07-25 08:46:30,187 INFO L226 Difference]: Without dead ends: 361 [2018-07-25 08:46:30,188 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16110, Invalid=16110, Unknown=0, NotChecked=0, Total=32220 [2018-07-25 08:46:30,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2018-07-25 08:46:30,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2018-07-25 08:46:30,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2018-07-25 08:46:30,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 361 transitions. [2018-07-25 08:46:30,191 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 361 transitions. Word has length 358 [2018-07-25 08:46:30,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:30,192 INFO L472 AbstractCegarLoop]: Abstraction has 361 states and 361 transitions. [2018-07-25 08:46:30,192 INFO L473 AbstractCegarLoop]: Interpolant automaton has 180 states. [2018-07-25 08:46:30,192 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 361 transitions. [2018-07-25 08:46:30,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-07-25 08:46:30,193 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:30,193 INFO L354 BasicCegarLoop]: trace histogram [179, 178, 1, 1, 1] [2018-07-25 08:46:30,193 INFO L415 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:30,193 INFO L82 PathProgramCache]: Analyzing trace with hash -433684325, now seen corresponding path program 178 times [2018-07-25 08:46:30,193 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:30,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:31,069 INFO L134 CoverageAnalysis]: Checked inductivity of 31862 backedges. 0 proven. 31862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:31,069 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:31,069 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [180] total 180 [2018-07-25 08:46:31,070 INFO L451 AbstractCegarLoop]: Interpolant automaton has 181 states [2018-07-25 08:46:31,072 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 181 interpolants. [2018-07-25 08:46:31,074 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16290, Invalid=16290, Unknown=0, NotChecked=0, Total=32580 [2018-07-25 08:46:31,074 INFO L87 Difference]: Start difference. First operand 361 states and 361 transitions. Second operand 181 states. [2018-07-25 08:46:32,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:32,734 INFO L93 Difference]: Finished difference Result 365 states and 365 transitions. [2018-07-25 08:46:32,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2018-07-25 08:46:32,734 INFO L78 Accepts]: Start accepts. Automaton has 181 states. Word has length 360 [2018-07-25 08:46:32,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:32,735 INFO L225 Difference]: With dead ends: 365 [2018-07-25 08:46:32,735 INFO L226 Difference]: Without dead ends: 363 [2018-07-25 08:46:32,738 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16290, Invalid=16290, Unknown=0, NotChecked=0, Total=32580 [2018-07-25 08:46:32,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2018-07-25 08:46:32,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2018-07-25 08:46:32,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2018-07-25 08:46:32,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 363 transitions. [2018-07-25 08:46:32,742 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 363 transitions. Word has length 360 [2018-07-25 08:46:32,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:32,742 INFO L472 AbstractCegarLoop]: Abstraction has 363 states and 363 transitions. [2018-07-25 08:46:32,742 INFO L473 AbstractCegarLoop]: Interpolant automaton has 181 states. [2018-07-25 08:46:32,742 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 363 transitions. [2018-07-25 08:46:32,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-07-25 08:46:32,744 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:32,744 INFO L354 BasicCegarLoop]: trace histogram [180, 179, 1, 1, 1] [2018-07-25 08:46:32,744 INFO L415 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:32,744 INFO L82 PathProgramCache]: Analyzing trace with hash -158756523, now seen corresponding path program 179 times [2018-07-25 08:46:32,744 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:32,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:33,748 INFO L134 CoverageAnalysis]: Checked inductivity of 32220 backedges. 0 proven. 32220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:33,748 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:33,749 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [181] total 181 [2018-07-25 08:46:33,749 INFO L451 AbstractCegarLoop]: Interpolant automaton has 182 states [2018-07-25 08:46:33,752 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 182 interpolants. [2018-07-25 08:46:33,754 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16471, Invalid=16471, Unknown=0, NotChecked=0, Total=32942 [2018-07-25 08:46:33,754 INFO L87 Difference]: Start difference. First operand 363 states and 363 transitions. Second operand 182 states. [2018-07-25 08:46:34,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:34,199 INFO L93 Difference]: Finished difference Result 367 states and 367 transitions. [2018-07-25 08:46:34,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2018-07-25 08:46:34,199 INFO L78 Accepts]: Start accepts. Automaton has 182 states. Word has length 362 [2018-07-25 08:46:34,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:34,200 INFO L225 Difference]: With dead ends: 367 [2018-07-25 08:46:34,200 INFO L226 Difference]: Without dead ends: 365 [2018-07-25 08:46:34,203 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=16471, Invalid=16471, Unknown=0, NotChecked=0, Total=32942 [2018-07-25 08:46:34,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2018-07-25 08:46:34,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2018-07-25 08:46:34,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2018-07-25 08:46:34,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 365 transitions. [2018-07-25 08:46:34,207 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 365 transitions. Word has length 362 [2018-07-25 08:46:34,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:34,208 INFO L472 AbstractCegarLoop]: Abstraction has 365 states and 365 transitions. [2018-07-25 08:46:34,208 INFO L473 AbstractCegarLoop]: Interpolant automaton has 182 states. [2018-07-25 08:46:34,208 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 365 transitions. [2018-07-25 08:46:34,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2018-07-25 08:46:34,209 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:34,209 INFO L354 BasicCegarLoop]: trace histogram [181, 180, 1, 1, 1] [2018-07-25 08:46:34,209 INFO L415 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:34,209 INFO L82 PathProgramCache]: Analyzing trace with hash 2053856143, now seen corresponding path program 180 times [2018-07-25 08:46:34,209 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:34,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:35,200 INFO L134 CoverageAnalysis]: Checked inductivity of 32580 backedges. 0 proven. 32580 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:35,200 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:35,200 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [182] total 182 [2018-07-25 08:46:35,201 INFO L451 AbstractCegarLoop]: Interpolant automaton has 183 states [2018-07-25 08:46:35,203 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 183 interpolants. [2018-07-25 08:46:35,204 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16653, Invalid=16653, Unknown=0, NotChecked=0, Total=33306 [2018-07-25 08:46:35,204 INFO L87 Difference]: Start difference. First operand 365 states and 365 transitions. Second operand 183 states. [2018-07-25 08:46:36,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:36,803 INFO L93 Difference]: Finished difference Result 369 states and 369 transitions. [2018-07-25 08:46:36,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2018-07-25 08:46:36,803 INFO L78 Accepts]: Start accepts. Automaton has 183 states. Word has length 364 [2018-07-25 08:46:36,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:36,803 INFO L225 Difference]: With dead ends: 369 [2018-07-25 08:46:36,804 INFO L226 Difference]: Without dead ends: 367 [2018-07-25 08:46:36,805 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=16653, Invalid=16653, Unknown=0, NotChecked=0, Total=33306 [2018-07-25 08:46:36,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2018-07-25 08:46:36,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 367. [2018-07-25 08:46:36,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2018-07-25 08:46:36,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 367 transitions. [2018-07-25 08:46:36,809 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 367 transitions. Word has length 364 [2018-07-25 08:46:36,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:36,809 INFO L472 AbstractCegarLoop]: Abstraction has 367 states and 367 transitions. [2018-07-25 08:46:36,809 INFO L473 AbstractCegarLoop]: Interpolant automaton has 183 states. [2018-07-25 08:46:36,809 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 367 transitions. [2018-07-25 08:46:36,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-07-25 08:46:36,810 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:36,810 INFO L354 BasicCegarLoop]: trace histogram [182, 181, 1, 1, 1] [2018-07-25 08:46:36,810 INFO L415 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:36,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1929150647, now seen corresponding path program 181 times [2018-07-25 08:46:36,810 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:36,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:37,734 INFO L134 CoverageAnalysis]: Checked inductivity of 32942 backedges. 0 proven. 32942 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:37,735 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:37,735 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [183] total 183 [2018-07-25 08:46:37,735 INFO L451 AbstractCegarLoop]: Interpolant automaton has 184 states [2018-07-25 08:46:37,738 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2018-07-25 08:46:37,739 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2018-07-25 08:46:37,740 INFO L87 Difference]: Start difference. First operand 367 states and 367 transitions. Second operand 184 states. [2018-07-25 08:46:38,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:38,287 INFO L93 Difference]: Finished difference Result 371 states and 371 transitions. [2018-07-25 08:46:38,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2018-07-25 08:46:38,287 INFO L78 Accepts]: Start accepts. Automaton has 184 states. Word has length 366 [2018-07-25 08:46:38,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:38,288 INFO L225 Difference]: With dead ends: 371 [2018-07-25 08:46:38,288 INFO L226 Difference]: Without dead ends: 369 [2018-07-25 08:46:38,290 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2018-07-25 08:46:38,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2018-07-25 08:46:38,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2018-07-25 08:46:38,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2018-07-25 08:46:38,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 369 transitions. [2018-07-25 08:46:38,293 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 369 transitions. Word has length 366 [2018-07-25 08:46:38,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:38,294 INFO L472 AbstractCegarLoop]: Abstraction has 369 states and 369 transitions. [2018-07-25 08:46:38,294 INFO L473 AbstractCegarLoop]: Interpolant automaton has 184 states. [2018-07-25 08:46:38,294 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 369 transitions. [2018-07-25 08:46:38,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-07-25 08:46:38,295 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:38,295 INFO L354 BasicCegarLoop]: trace histogram [183, 182, 1, 1, 1] [2018-07-25 08:46:38,295 INFO L415 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:38,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1512152195, now seen corresponding path program 182 times [2018-07-25 08:46:38,295 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:38,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:39,236 INFO L134 CoverageAnalysis]: Checked inductivity of 33306 backedges. 0 proven. 33306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:39,236 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:39,236 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [184] total 184 [2018-07-25 08:46:39,237 INFO L451 AbstractCegarLoop]: Interpolant automaton has 185 states [2018-07-25 08:46:39,238 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 185 interpolants. [2018-07-25 08:46:39,239 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17020, Invalid=17020, Unknown=0, NotChecked=0, Total=34040 [2018-07-25 08:46:39,239 INFO L87 Difference]: Start difference. First operand 369 states and 369 transitions. Second operand 185 states. [2018-07-25 08:46:40,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:40,681 INFO L93 Difference]: Finished difference Result 373 states and 373 transitions. [2018-07-25 08:46:40,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2018-07-25 08:46:40,682 INFO L78 Accepts]: Start accepts. Automaton has 185 states. Word has length 368 [2018-07-25 08:46:40,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:40,682 INFO L225 Difference]: With dead ends: 373 [2018-07-25 08:46:40,682 INFO L226 Difference]: Without dead ends: 371 [2018-07-25 08:46:40,683 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17020, Invalid=17020, Unknown=0, NotChecked=0, Total=34040 [2018-07-25 08:46:40,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2018-07-25 08:46:40,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2018-07-25 08:46:40,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2018-07-25 08:46:40,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 371 transitions. [2018-07-25 08:46:40,688 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 371 transitions. Word has length 368 [2018-07-25 08:46:40,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:40,688 INFO L472 AbstractCegarLoop]: Abstraction has 371 states and 371 transitions. [2018-07-25 08:46:40,688 INFO L473 AbstractCegarLoop]: Interpolant automaton has 185 states. [2018-07-25 08:46:40,688 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 371 transitions. [2018-07-25 08:46:40,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-07-25 08:46:40,690 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:40,690 INFO L354 BasicCegarLoop]: trace histogram [184, 183, 1, 1, 1] [2018-07-25 08:46:40,690 INFO L415 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:40,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1479365437, now seen corresponding path program 183 times [2018-07-25 08:46:40,690 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:40,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:41,611 INFO L134 CoverageAnalysis]: Checked inductivity of 33672 backedges. 0 proven. 33672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:41,612 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:41,612 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [185] total 185 [2018-07-25 08:46:41,612 INFO L451 AbstractCegarLoop]: Interpolant automaton has 186 states [2018-07-25 08:46:41,614 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 186 interpolants. [2018-07-25 08:46:41,616 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17205, Invalid=17205, Unknown=0, NotChecked=0, Total=34410 [2018-07-25 08:46:41,616 INFO L87 Difference]: Start difference. First operand 371 states and 371 transitions. Second operand 186 states. [2018-07-25 08:46:42,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:42,080 INFO L93 Difference]: Finished difference Result 375 states and 375 transitions. [2018-07-25 08:46:42,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2018-07-25 08:46:42,081 INFO L78 Accepts]: Start accepts. Automaton has 186 states. Word has length 370 [2018-07-25 08:46:42,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:42,081 INFO L225 Difference]: With dead ends: 375 [2018-07-25 08:46:42,081 INFO L226 Difference]: Without dead ends: 373 [2018-07-25 08:46:42,084 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17205, Invalid=17205, Unknown=0, NotChecked=0, Total=34410 [2018-07-25 08:46:42,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2018-07-25 08:46:42,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2018-07-25 08:46:42,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2018-07-25 08:46:42,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 373 transitions. [2018-07-25 08:46:42,089 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 373 transitions. Word has length 370 [2018-07-25 08:46:42,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:42,089 INFO L472 AbstractCegarLoop]: Abstraction has 373 states and 373 transitions. [2018-07-25 08:46:42,089 INFO L473 AbstractCegarLoop]: Interpolant automaton has 186 states. [2018-07-25 08:46:42,089 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 373 transitions. [2018-07-25 08:46:42,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2018-07-25 08:46:42,091 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:42,091 INFO L354 BasicCegarLoop]: trace histogram [185, 184, 1, 1, 1] [2018-07-25 08:46:42,091 INFO L415 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:42,091 INFO L82 PathProgramCache]: Analyzing trace with hash 36062071, now seen corresponding path program 184 times [2018-07-25 08:46:42,091 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:42,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:43,019 INFO L134 CoverageAnalysis]: Checked inductivity of 34040 backedges. 0 proven. 34040 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:43,019 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:43,019 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [186] total 186 [2018-07-25 08:46:43,020 INFO L451 AbstractCegarLoop]: Interpolant automaton has 187 states [2018-07-25 08:46:43,022 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 187 interpolants. [2018-07-25 08:46:43,024 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17391, Invalid=17391, Unknown=0, NotChecked=0, Total=34782 [2018-07-25 08:46:43,024 INFO L87 Difference]: Start difference. First operand 373 states and 373 transitions. Second operand 187 states. [2018-07-25 08:46:44,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:44,640 INFO L93 Difference]: Finished difference Result 377 states and 377 transitions. [2018-07-25 08:46:44,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2018-07-25 08:46:44,640 INFO L78 Accepts]: Start accepts. Automaton has 187 states. Word has length 372 [2018-07-25 08:46:44,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:44,641 INFO L225 Difference]: With dead ends: 377 [2018-07-25 08:46:44,641 INFO L226 Difference]: Without dead ends: 375 [2018-07-25 08:46:44,643 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17391, Invalid=17391, Unknown=0, NotChecked=0, Total=34782 [2018-07-25 08:46:44,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2018-07-25 08:46:44,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2018-07-25 08:46:44,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2018-07-25 08:46:44,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 375 transitions. [2018-07-25 08:46:44,646 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 375 transitions. Word has length 372 [2018-07-25 08:46:44,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:44,647 INFO L472 AbstractCegarLoop]: Abstraction has 375 states and 375 transitions. [2018-07-25 08:46:44,647 INFO L473 AbstractCegarLoop]: Interpolant automaton has 187 states. [2018-07-25 08:46:44,647 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 375 transitions. [2018-07-25 08:46:44,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2018-07-25 08:46:44,648 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:44,648 INFO L354 BasicCegarLoop]: trace histogram [186, 185, 1, 1, 1] [2018-07-25 08:46:44,648 INFO L415 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:44,648 INFO L82 PathProgramCache]: Analyzing trace with hash 295963953, now seen corresponding path program 185 times [2018-07-25 08:46:44,648 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:44,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:45,597 INFO L134 CoverageAnalysis]: Checked inductivity of 34410 backedges. 0 proven. 34410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:45,598 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:45,598 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [187] total 187 [2018-07-25 08:46:45,598 INFO L451 AbstractCegarLoop]: Interpolant automaton has 188 states [2018-07-25 08:46:45,601 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2018-07-25 08:46:45,603 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17578, Invalid=17578, Unknown=0, NotChecked=0, Total=35156 [2018-07-25 08:46:45,603 INFO L87 Difference]: Start difference. First operand 375 states and 375 transitions. Second operand 188 states. [2018-07-25 08:46:46,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:46,200 INFO L93 Difference]: Finished difference Result 379 states and 379 transitions. [2018-07-25 08:46:46,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2018-07-25 08:46:46,200 INFO L78 Accepts]: Start accepts. Automaton has 188 states. Word has length 374 [2018-07-25 08:46:46,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:46,201 INFO L225 Difference]: With dead ends: 379 [2018-07-25 08:46:46,201 INFO L226 Difference]: Without dead ends: 377 [2018-07-25 08:46:46,203 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17578, Invalid=17578, Unknown=0, NotChecked=0, Total=35156 [2018-07-25 08:46:46,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2018-07-25 08:46:46,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2018-07-25 08:46:46,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2018-07-25 08:46:46,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 377 transitions. [2018-07-25 08:46:46,207 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 377 transitions. Word has length 374 [2018-07-25 08:46:46,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:46,207 INFO L472 AbstractCegarLoop]: Abstraction has 377 states and 377 transitions. [2018-07-25 08:46:46,207 INFO L473 AbstractCegarLoop]: Interpolant automaton has 188 states. [2018-07-25 08:46:46,207 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 377 transitions. [2018-07-25 08:46:46,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2018-07-25 08:46:46,208 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:46,209 INFO L354 BasicCegarLoop]: trace histogram [187, 186, 1, 1, 1] [2018-07-25 08:46:46,209 INFO L415 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:46,209 INFO L82 PathProgramCache]: Analyzing trace with hash 953569387, now seen corresponding path program 186 times [2018-07-25 08:46:46,209 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:46,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:47,193 INFO L134 CoverageAnalysis]: Checked inductivity of 34782 backedges. 0 proven. 34782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:47,193 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:47,193 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [188] total 188 [2018-07-25 08:46:47,194 INFO L451 AbstractCegarLoop]: Interpolant automaton has 189 states [2018-07-25 08:46:47,196 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 189 interpolants. [2018-07-25 08:46:47,197 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17766, Invalid=17766, Unknown=0, NotChecked=0, Total=35532 [2018-07-25 08:46:47,198 INFO L87 Difference]: Start difference. First operand 377 states and 377 transitions. Second operand 189 states. [2018-07-25 08:46:48,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:48,301 INFO L93 Difference]: Finished difference Result 381 states and 381 transitions. [2018-07-25 08:46:48,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2018-07-25 08:46:48,301 INFO L78 Accepts]: Start accepts. Automaton has 189 states. Word has length 376 [2018-07-25 08:46:48,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:48,302 INFO L225 Difference]: With dead ends: 381 [2018-07-25 08:46:48,302 INFO L226 Difference]: Without dead ends: 379 [2018-07-25 08:46:48,306 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17766, Invalid=17766, Unknown=0, NotChecked=0, Total=35532 [2018-07-25 08:46:48,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2018-07-25 08:46:48,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2018-07-25 08:46:48,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-07-25 08:46:48,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 379 transitions. [2018-07-25 08:46:48,310 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 379 transitions. Word has length 376 [2018-07-25 08:46:48,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:48,310 INFO L472 AbstractCegarLoop]: Abstraction has 379 states and 379 transitions. [2018-07-25 08:46:48,310 INFO L473 AbstractCegarLoop]: Interpolant automaton has 189 states. [2018-07-25 08:46:48,310 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 379 transitions. [2018-07-25 08:46:48,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-07-25 08:46:48,312 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:48,312 INFO L354 BasicCegarLoop]: trace histogram [188, 187, 1, 1, 1] [2018-07-25 08:46:48,312 INFO L415 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:48,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1552198949, now seen corresponding path program 187 times [2018-07-25 08:46:48,312 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:48,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:49,285 INFO L134 CoverageAnalysis]: Checked inductivity of 35156 backedges. 0 proven. 35156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:49,286 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:49,286 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [189] total 189 [2018-07-25 08:46:49,286 INFO L451 AbstractCegarLoop]: Interpolant automaton has 190 states [2018-07-25 08:46:49,288 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2018-07-25 08:46:49,290 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17955, Invalid=17955, Unknown=0, NotChecked=0, Total=35910 [2018-07-25 08:46:49,290 INFO L87 Difference]: Start difference. First operand 379 states and 379 transitions. Second operand 190 states. [2018-07-25 08:46:50,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:50,935 INFO L93 Difference]: Finished difference Result 383 states and 383 transitions. [2018-07-25 08:46:50,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2018-07-25 08:46:50,935 INFO L78 Accepts]: Start accepts. Automaton has 190 states. Word has length 378 [2018-07-25 08:46:50,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:50,936 INFO L225 Difference]: With dead ends: 383 [2018-07-25 08:46:50,936 INFO L226 Difference]: Without dead ends: 381 [2018-07-25 08:46:50,938 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17955, Invalid=17955, Unknown=0, NotChecked=0, Total=35910 [2018-07-25 08:46:50,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2018-07-25 08:46:50,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2018-07-25 08:46:50,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2018-07-25 08:46:50,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 381 transitions. [2018-07-25 08:46:50,942 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 381 transitions. Word has length 378 [2018-07-25 08:46:50,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:50,942 INFO L472 AbstractCegarLoop]: Abstraction has 381 states and 381 transitions. [2018-07-25 08:46:50,943 INFO L473 AbstractCegarLoop]: Interpolant automaton has 190 states. [2018-07-25 08:46:50,943 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 381 transitions. [2018-07-25 08:46:50,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2018-07-25 08:46:50,944 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:50,944 INFO L354 BasicCegarLoop]: trace histogram [189, 188, 1, 1, 1] [2018-07-25 08:46:50,944 INFO L415 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:50,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1309590367, now seen corresponding path program 188 times [2018-07-25 08:46:50,944 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:51,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:52,073 INFO L134 CoverageAnalysis]: Checked inductivity of 35532 backedges. 0 proven. 35532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:52,074 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:52,074 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [190] total 190 [2018-07-25 08:46:52,074 INFO L451 AbstractCegarLoop]: Interpolant automaton has 191 states [2018-07-25 08:46:52,077 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 191 interpolants. [2018-07-25 08:46:52,079 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18145, Invalid=18145, Unknown=0, NotChecked=0, Total=36290 [2018-07-25 08:46:52,080 INFO L87 Difference]: Start difference. First operand 381 states and 381 transitions. Second operand 191 states. [2018-07-25 08:46:52,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:52,932 INFO L93 Difference]: Finished difference Result 385 states and 385 transitions. [2018-07-25 08:46:52,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2018-07-25 08:46:52,932 INFO L78 Accepts]: Start accepts. Automaton has 191 states. Word has length 380 [2018-07-25 08:46:52,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:52,932 INFO L225 Difference]: With dead ends: 385 [2018-07-25 08:46:52,932 INFO L226 Difference]: Without dead ends: 383 [2018-07-25 08:46:52,934 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=18145, Invalid=18145, Unknown=0, NotChecked=0, Total=36290 [2018-07-25 08:46:52,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2018-07-25 08:46:52,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2018-07-25 08:46:52,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2018-07-25 08:46:52,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 383 transitions. [2018-07-25 08:46:52,938 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 383 transitions. Word has length 380 [2018-07-25 08:46:52,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:52,938 INFO L472 AbstractCegarLoop]: Abstraction has 383 states and 383 transitions. [2018-07-25 08:46:52,938 INFO L473 AbstractCegarLoop]: Interpolant automaton has 191 states. [2018-07-25 08:46:52,939 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 383 transitions. [2018-07-25 08:46:52,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2018-07-25 08:46:52,940 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:52,940 INFO L354 BasicCegarLoop]: trace histogram [190, 189, 1, 1, 1] [2018-07-25 08:46:52,940 INFO L415 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:52,940 INFO L82 PathProgramCache]: Analyzing trace with hash 90977049, now seen corresponding path program 189 times [2018-07-25 08:46:52,940 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:53,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:53,993 INFO L134 CoverageAnalysis]: Checked inductivity of 35910 backedges. 0 proven. 35910 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:53,994 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:53,994 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [191] total 191 [2018-07-25 08:46:53,994 INFO L451 AbstractCegarLoop]: Interpolant automaton has 192 states [2018-07-25 08:46:53,996 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2018-07-25 08:46:53,997 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2018-07-25 08:46:53,997 INFO L87 Difference]: Start difference. First operand 383 states and 383 transitions. Second operand 192 states. [2018-07-25 08:46:54,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:54,688 INFO L93 Difference]: Finished difference Result 387 states and 387 transitions. [2018-07-25 08:46:54,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2018-07-25 08:46:54,688 INFO L78 Accepts]: Start accepts. Automaton has 192 states. Word has length 382 [2018-07-25 08:46:54,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:54,689 INFO L225 Difference]: With dead ends: 387 [2018-07-25 08:46:54,689 INFO L226 Difference]: Without dead ends: 385 [2018-07-25 08:46:54,690 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2018-07-25 08:46:54,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2018-07-25 08:46:54,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 385. [2018-07-25 08:46:54,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2018-07-25 08:46:54,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 385 transitions. [2018-07-25 08:46:54,693 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 385 transitions. Word has length 382 [2018-07-25 08:46:54,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:54,694 INFO L472 AbstractCegarLoop]: Abstraction has 385 states and 385 transitions. [2018-07-25 08:46:54,694 INFO L473 AbstractCegarLoop]: Interpolant automaton has 192 states. [2018-07-25 08:46:54,694 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 385 transitions. [2018-07-25 08:46:54,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2018-07-25 08:46:54,695 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:54,695 INFO L354 BasicCegarLoop]: trace histogram [191, 190, 1, 1, 1] [2018-07-25 08:46:54,695 INFO L415 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:54,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1529650259, now seen corresponding path program 190 times [2018-07-25 08:46:54,695 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:54,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:55,682 INFO L134 CoverageAnalysis]: Checked inductivity of 36290 backedges. 0 proven. 36290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:55,682 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:55,682 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [192] total 192 [2018-07-25 08:46:55,682 INFO L451 AbstractCegarLoop]: Interpolant automaton has 193 states [2018-07-25 08:46:55,685 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2018-07-25 08:46:55,686 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2018-07-25 08:46:55,686 INFO L87 Difference]: Start difference. First operand 385 states and 385 transitions. Second operand 193 states. [2018-07-25 08:46:57,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:57,256 INFO L93 Difference]: Finished difference Result 389 states and 389 transitions. [2018-07-25 08:46:57,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2018-07-25 08:46:57,256 INFO L78 Accepts]: Start accepts. Automaton has 193 states. Word has length 384 [2018-07-25 08:46:57,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:57,256 INFO L225 Difference]: With dead ends: 389 [2018-07-25 08:46:57,257 INFO L226 Difference]: Without dead ends: 387 [2018-07-25 08:46:57,259 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2018-07-25 08:46:57,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2018-07-25 08:46:57,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2018-07-25 08:46:57,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2018-07-25 08:46:57,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 387 transitions. [2018-07-25 08:46:57,262 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 387 transitions. Word has length 384 [2018-07-25 08:46:57,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:57,263 INFO L472 AbstractCegarLoop]: Abstraction has 387 states and 387 transitions. [2018-07-25 08:46:57,263 INFO L473 AbstractCegarLoop]: Interpolant automaton has 193 states. [2018-07-25 08:46:57,263 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 387 transitions. [2018-07-25 08:46:57,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2018-07-25 08:46:57,264 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:57,265 INFO L354 BasicCegarLoop]: trace histogram [192, 191, 1, 1, 1] [2018-07-25 08:46:57,265 INFO L415 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:57,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1115135757, now seen corresponding path program 191 times [2018-07-25 08:46:57,265 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:57,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:58,370 INFO L134 CoverageAnalysis]: Checked inductivity of 36672 backedges. 0 proven. 36672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:58,371 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:58,371 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [193] total 193 [2018-07-25 08:46:58,371 INFO L451 AbstractCegarLoop]: Interpolant automaton has 194 states [2018-07-25 08:46:58,373 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2018-07-25 08:46:58,374 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18721, Invalid=18721, Unknown=0, NotChecked=0, Total=37442 [2018-07-25 08:46:58,374 INFO L87 Difference]: Start difference. First operand 387 states and 387 transitions. Second operand 194 states. [2018-07-25 08:47:00,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:00,061 INFO L93 Difference]: Finished difference Result 391 states and 391 transitions. [2018-07-25 08:47:00,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2018-07-25 08:47:00,061 INFO L78 Accepts]: Start accepts. Automaton has 194 states. Word has length 386 [2018-07-25 08:47:00,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:00,062 INFO L225 Difference]: With dead ends: 391 [2018-07-25 08:47:00,062 INFO L226 Difference]: Without dead ends: 389 [2018-07-25 08:47:00,063 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18721, Invalid=18721, Unknown=0, NotChecked=0, Total=37442 [2018-07-25 08:47:00,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2018-07-25 08:47:00,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 389. [2018-07-25 08:47:00,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2018-07-25 08:47:00,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 389 transitions. [2018-07-25 08:47:00,068 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 389 transitions. Word has length 386 [2018-07-25 08:47:00,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:00,069 INFO L472 AbstractCegarLoop]: Abstraction has 389 states and 389 transitions. [2018-07-25 08:47:00,069 INFO L473 AbstractCegarLoop]: Interpolant automaton has 194 states. [2018-07-25 08:47:00,069 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 389 transitions. [2018-07-25 08:47:00,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2018-07-25 08:47:00,071 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:00,071 INFO L354 BasicCegarLoop]: trace histogram [193, 192, 1, 1, 1] [2018-07-25 08:47:00,071 INFO L415 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:00,071 INFO L82 PathProgramCache]: Analyzing trace with hash -2096309433, now seen corresponding path program 192 times [2018-07-25 08:47:00,071 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:00,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:01,131 INFO L134 CoverageAnalysis]: Checked inductivity of 37056 backedges. 0 proven. 37056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:01,132 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:01,132 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [194] total 194 [2018-07-25 08:47:01,132 INFO L451 AbstractCegarLoop]: Interpolant automaton has 195 states [2018-07-25 08:47:01,135 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 195 interpolants. [2018-07-25 08:47:01,137 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18915, Invalid=18915, Unknown=0, NotChecked=0, Total=37830 [2018-07-25 08:47:01,137 INFO L87 Difference]: Start difference. First operand 389 states and 389 transitions. Second operand 195 states. [2018-07-25 08:47:02,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:02,801 INFO L93 Difference]: Finished difference Result 393 states and 393 transitions. [2018-07-25 08:47:02,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2018-07-25 08:47:02,801 INFO L78 Accepts]: Start accepts. Automaton has 195 states. Word has length 388 [2018-07-25 08:47:02,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:02,802 INFO L225 Difference]: With dead ends: 393 [2018-07-25 08:47:02,802 INFO L226 Difference]: Without dead ends: 391 [2018-07-25 08:47:02,806 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18915, Invalid=18915, Unknown=0, NotChecked=0, Total=37830 [2018-07-25 08:47:02,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2018-07-25 08:47:02,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2018-07-25 08:47:02,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2018-07-25 08:47:02,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 391 transitions. [2018-07-25 08:47:02,811 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 391 transitions. Word has length 388 [2018-07-25 08:47:02,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:02,811 INFO L472 AbstractCegarLoop]: Abstraction has 391 states and 391 transitions. [2018-07-25 08:47:02,811 INFO L473 AbstractCegarLoop]: Interpolant automaton has 195 states. [2018-07-25 08:47:02,812 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 391 transitions. [2018-07-25 08:47:02,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2018-07-25 08:47:02,813 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:02,813 INFO L354 BasicCegarLoop]: trace histogram [194, 193, 1, 1, 1] [2018-07-25 08:47:02,813 INFO L415 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:02,813 INFO L82 PathProgramCache]: Analyzing trace with hash -213651199, now seen corresponding path program 193 times [2018-07-25 08:47:02,813 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:02,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:03,966 INFO L134 CoverageAnalysis]: Checked inductivity of 37442 backedges. 0 proven. 37442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:03,966 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:03,966 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [195] total 195 [2018-07-25 08:47:03,967 INFO L451 AbstractCegarLoop]: Interpolant automaton has 196 states [2018-07-25 08:47:03,968 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2018-07-25 08:47:03,969 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19110, Invalid=19110, Unknown=0, NotChecked=0, Total=38220 [2018-07-25 08:47:03,969 INFO L87 Difference]: Start difference. First operand 391 states and 391 transitions. Second operand 196 states. [2018-07-25 08:47:05,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:05,176 INFO L93 Difference]: Finished difference Result 395 states and 395 transitions. [2018-07-25 08:47:05,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2018-07-25 08:47:05,177 INFO L78 Accepts]: Start accepts. Automaton has 196 states. Word has length 390 [2018-07-25 08:47:05,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:05,178 INFO L225 Difference]: With dead ends: 395 [2018-07-25 08:47:05,178 INFO L226 Difference]: Without dead ends: 393 [2018-07-25 08:47:05,179 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=19110, Invalid=19110, Unknown=0, NotChecked=0, Total=38220 [2018-07-25 08:47:05,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2018-07-25 08:47:05,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2018-07-25 08:47:05,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2018-07-25 08:47:05,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 393 transitions. [2018-07-25 08:47:05,183 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 393 transitions. Word has length 390 [2018-07-25 08:47:05,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:05,183 INFO L472 AbstractCegarLoop]: Abstraction has 393 states and 393 transitions. [2018-07-25 08:47:05,183 INFO L473 AbstractCegarLoop]: Interpolant automaton has 196 states. [2018-07-25 08:47:05,184 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 393 transitions. [2018-07-25 08:47:05,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2018-07-25 08:47:05,185 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:05,185 INFO L354 BasicCegarLoop]: trace histogram [195, 194, 1, 1, 1] [2018-07-25 08:47:05,185 INFO L415 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:05,185 INFO L82 PathProgramCache]: Analyzing trace with hash 839680059, now seen corresponding path program 194 times [2018-07-25 08:47:05,185 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:05,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:06,269 INFO L134 CoverageAnalysis]: Checked inductivity of 37830 backedges. 0 proven. 37830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:06,269 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:06,269 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [196] total 196 [2018-07-25 08:47:06,270 INFO L451 AbstractCegarLoop]: Interpolant automaton has 197 states [2018-07-25 08:47:06,272 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2018-07-25 08:47:06,274 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19306, Invalid=19306, Unknown=0, NotChecked=0, Total=38612 [2018-07-25 08:47:06,275 INFO L87 Difference]: Start difference. First operand 393 states and 393 transitions. Second operand 197 states. [2018-07-25 08:47:07,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:07,190 INFO L93 Difference]: Finished difference Result 397 states and 397 transitions. [2018-07-25 08:47:07,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2018-07-25 08:47:07,190 INFO L78 Accepts]: Start accepts. Automaton has 197 states. Word has length 392 [2018-07-25 08:47:07,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:07,191 INFO L225 Difference]: With dead ends: 397 [2018-07-25 08:47:07,191 INFO L226 Difference]: Without dead ends: 395 [2018-07-25 08:47:07,193 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19306, Invalid=19306, Unknown=0, NotChecked=0, Total=38612 [2018-07-25 08:47:07,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2018-07-25 08:47:07,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2018-07-25 08:47:07,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2018-07-25 08:47:07,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 395 transitions. [2018-07-25 08:47:07,197 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 395 transitions. Word has length 392 [2018-07-25 08:47:07,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:07,198 INFO L472 AbstractCegarLoop]: Abstraction has 395 states and 395 transitions. [2018-07-25 08:47:07,198 INFO L473 AbstractCegarLoop]: Interpolant automaton has 197 states. [2018-07-25 08:47:07,198 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 395 transitions. [2018-07-25 08:47:07,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2018-07-25 08:47:07,199 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:07,199 INFO L354 BasicCegarLoop]: trace histogram [196, 195, 1, 1, 1] [2018-07-25 08:47:07,199 INFO L415 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:07,199 INFO L82 PathProgramCache]: Analyzing trace with hash -521262859, now seen corresponding path program 195 times [2018-07-25 08:47:07,199 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:07,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:08,331 INFO L134 CoverageAnalysis]: Checked inductivity of 38220 backedges. 0 proven. 38220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:08,331 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:08,331 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [197] total 197 [2018-07-25 08:47:08,332 INFO L451 AbstractCegarLoop]: Interpolant automaton has 198 states [2018-07-25 08:47:08,335 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2018-07-25 08:47:08,337 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19503, Invalid=19503, Unknown=0, NotChecked=0, Total=39006 [2018-07-25 08:47:08,337 INFO L87 Difference]: Start difference. First operand 395 states and 395 transitions. Second operand 198 states. [2018-07-25 08:47:09,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:09,078 INFO L93 Difference]: Finished difference Result 399 states and 399 transitions. [2018-07-25 08:47:09,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2018-07-25 08:47:09,078 INFO L78 Accepts]: Start accepts. Automaton has 198 states. Word has length 394 [2018-07-25 08:47:09,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:09,078 INFO L225 Difference]: With dead ends: 399 [2018-07-25 08:47:09,078 INFO L226 Difference]: Without dead ends: 397 [2018-07-25 08:47:09,081 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=19503, Invalid=19503, Unknown=0, NotChecked=0, Total=39006 [2018-07-25 08:47:09,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2018-07-25 08:47:09,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 397. [2018-07-25 08:47:09,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2018-07-25 08:47:09,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 397 transitions. [2018-07-25 08:47:09,085 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 397 transitions. Word has length 394 [2018-07-25 08:47:09,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:09,085 INFO L472 AbstractCegarLoop]: Abstraction has 397 states and 397 transitions. [2018-07-25 08:47:09,085 INFO L473 AbstractCegarLoop]: Interpolant automaton has 198 states. [2018-07-25 08:47:09,085 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 397 transitions. [2018-07-25 08:47:09,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2018-07-25 08:47:09,086 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:09,086 INFO L354 BasicCegarLoop]: trace histogram [197, 196, 1, 1, 1] [2018-07-25 08:47:09,086 INFO L415 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:09,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1577618223, now seen corresponding path program 196 times [2018-07-25 08:47:09,087 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:09,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:10,174 INFO L134 CoverageAnalysis]: Checked inductivity of 38612 backedges. 0 proven. 38612 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:10,175 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:10,175 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [198] total 198 [2018-07-25 08:47:10,175 INFO L451 AbstractCegarLoop]: Interpolant automaton has 199 states [2018-07-25 08:47:10,178 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 199 interpolants. [2018-07-25 08:47:10,180 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19701, Invalid=19701, Unknown=0, NotChecked=0, Total=39402 [2018-07-25 08:47:10,180 INFO L87 Difference]: Start difference. First operand 397 states and 397 transitions. Second operand 199 states. [2018-07-25 08:47:10,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:10,999 INFO L93 Difference]: Finished difference Result 401 states and 401 transitions. [2018-07-25 08:47:10,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2018-07-25 08:47:10,999 INFO L78 Accepts]: Start accepts. Automaton has 199 states. Word has length 396 [2018-07-25 08:47:11,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:11,000 INFO L225 Difference]: With dead ends: 401 [2018-07-25 08:47:11,000 INFO L226 Difference]: Without dead ends: 399 [2018-07-25 08:47:11,003 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19701, Invalid=19701, Unknown=0, NotChecked=0, Total=39402 [2018-07-25 08:47:11,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2018-07-25 08:47:11,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 399. [2018-07-25 08:47:11,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2018-07-25 08:47:11,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 399 transitions. [2018-07-25 08:47:11,007 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 399 transitions. Word has length 396 [2018-07-25 08:47:11,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:11,007 INFO L472 AbstractCegarLoop]: Abstraction has 399 states and 399 transitions. [2018-07-25 08:47:11,007 INFO L473 AbstractCegarLoop]: Interpolant automaton has 199 states. [2018-07-25 08:47:11,007 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 399 transitions. [2018-07-25 08:47:11,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2018-07-25 08:47:11,008 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:11,008 INFO L354 BasicCegarLoop]: trace histogram [198, 197, 1, 1, 1] [2018-07-25 08:47:11,008 INFO L415 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:11,009 INFO L82 PathProgramCache]: Analyzing trace with hash -32291095, now seen corresponding path program 197 times [2018-07-25 08:47:11,009 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:11,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:12,125 INFO L134 CoverageAnalysis]: Checked inductivity of 39006 backedges. 0 proven. 39006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:12,125 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:12,125 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [199] total 199 [2018-07-25 08:47:12,126 INFO L451 AbstractCegarLoop]: Interpolant automaton has 200 states [2018-07-25 08:47:12,128 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2018-07-25 08:47:12,130 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19900, Invalid=19900, Unknown=0, NotChecked=0, Total=39800 [2018-07-25 08:47:12,130 INFO L87 Difference]: Start difference. First operand 399 states and 399 transitions. Second operand 200 states. [2018-07-25 08:47:12,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:12,998 INFO L93 Difference]: Finished difference Result 403 states and 403 transitions. [2018-07-25 08:47:12,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2018-07-25 08:47:12,998 INFO L78 Accepts]: Start accepts. Automaton has 200 states. Word has length 398 [2018-07-25 08:47:12,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:12,999 INFO L225 Difference]: With dead ends: 403 [2018-07-25 08:47:12,999 INFO L226 Difference]: Without dead ends: 401 [2018-07-25 08:47:13,002 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19900, Invalid=19900, Unknown=0, NotChecked=0, Total=39800 [2018-07-25 08:47:13,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2018-07-25 08:47:13,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2018-07-25 08:47:13,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2018-07-25 08:47:13,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 401 transitions. [2018-07-25 08:47:13,007 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 401 transitions. Word has length 398 [2018-07-25 08:47:13,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:13,007 INFO L472 AbstractCegarLoop]: Abstraction has 401 states and 401 transitions. [2018-07-25 08:47:13,008 INFO L473 AbstractCegarLoop]: Interpolant automaton has 200 states. [2018-07-25 08:47:13,008 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 401 transitions. [2018-07-25 08:47:13,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2018-07-25 08:47:13,009 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:13,009 INFO L354 BasicCegarLoop]: trace histogram [199, 198, 1, 1, 1] [2018-07-25 08:47:13,009 INFO L415 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:13,010 INFO L82 PathProgramCache]: Analyzing trace with hash -966919133, now seen corresponding path program 198 times [2018-07-25 08:47:13,010 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:13,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:14,169 INFO L134 CoverageAnalysis]: Checked inductivity of 39402 backedges. 0 proven. 39402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:14,169 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:14,169 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [200] total 200 [2018-07-25 08:47:14,170 INFO L451 AbstractCegarLoop]: Interpolant automaton has 201 states [2018-07-25 08:47:14,173 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 201 interpolants. [2018-07-25 08:47:14,175 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20100, Invalid=20100, Unknown=0, NotChecked=0, Total=40200 [2018-07-25 08:47:14,175 INFO L87 Difference]: Start difference. First operand 401 states and 401 transitions. Second operand 201 states. [2018-07-25 08:47:15,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:15,383 INFO L93 Difference]: Finished difference Result 405 states and 405 transitions. [2018-07-25 08:47:15,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2018-07-25 08:47:15,383 INFO L78 Accepts]: Start accepts. Automaton has 201 states. Word has length 400 [2018-07-25 08:47:15,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:15,384 INFO L225 Difference]: With dead ends: 405 [2018-07-25 08:47:15,384 INFO L226 Difference]: Without dead ends: 403 [2018-07-25 08:47:15,387 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20100, Invalid=20100, Unknown=0, NotChecked=0, Total=40200 [2018-07-25 08:47:15,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2018-07-25 08:47:15,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2018-07-25 08:47:15,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2018-07-25 08:47:15,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 403 transitions. [2018-07-25 08:47:15,391 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 403 transitions. Word has length 400 [2018-07-25 08:47:15,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:15,391 INFO L472 AbstractCegarLoop]: Abstraction has 403 states and 403 transitions. [2018-07-25 08:47:15,391 INFO L473 AbstractCegarLoop]: Interpolant automaton has 201 states. [2018-07-25 08:47:15,391 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 403 transitions. [2018-07-25 08:47:15,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2018-07-25 08:47:15,392 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:15,392 INFO L354 BasicCegarLoop]: trace histogram [200, 199, 1, 1, 1] [2018-07-25 08:47:15,392 INFO L415 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:15,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1496298787, now seen corresponding path program 199 times [2018-07-25 08:47:15,393 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:15,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:16,617 INFO L134 CoverageAnalysis]: Checked inductivity of 39800 backedges. 0 proven. 39800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:16,618 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:16,618 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [201] total 201 [2018-07-25 08:47:16,618 INFO L451 AbstractCegarLoop]: Interpolant automaton has 202 states [2018-07-25 08:47:16,622 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 202 interpolants. [2018-07-25 08:47:16,624 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20301, Invalid=20301, Unknown=0, NotChecked=0, Total=40602 [2018-07-25 08:47:16,624 INFO L87 Difference]: Start difference. First operand 403 states and 403 transitions. Second operand 202 states. [2018-07-25 08:47:18,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:18,266 INFO L93 Difference]: Finished difference Result 407 states and 407 transitions. [2018-07-25 08:47:18,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2018-07-25 08:47:18,266 INFO L78 Accepts]: Start accepts. Automaton has 202 states. Word has length 402 [2018-07-25 08:47:18,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:18,267 INFO L225 Difference]: With dead ends: 407 [2018-07-25 08:47:18,267 INFO L226 Difference]: Without dead ends: 405 [2018-07-25 08:47:18,269 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20301, Invalid=20301, Unknown=0, NotChecked=0, Total=40602 [2018-07-25 08:47:18,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2018-07-25 08:47:18,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 405. [2018-07-25 08:47:18,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2018-07-25 08:47:18,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 405 transitions. [2018-07-25 08:47:18,273 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 405 transitions. Word has length 402 [2018-07-25 08:47:18,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:18,273 INFO L472 AbstractCegarLoop]: Abstraction has 405 states and 405 transitions. [2018-07-25 08:47:18,273 INFO L473 AbstractCegarLoop]: Interpolant automaton has 202 states. [2018-07-25 08:47:18,274 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 405 transitions. [2018-07-25 08:47:18,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2018-07-25 08:47:18,275 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:18,275 INFO L354 BasicCegarLoop]: trace histogram [201, 200, 1, 1, 1] [2018-07-25 08:47:18,275 INFO L415 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:18,275 INFO L82 PathProgramCache]: Analyzing trace with hash 870961943, now seen corresponding path program 200 times [2018-07-25 08:47:18,275 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:18,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:19,494 INFO L134 CoverageAnalysis]: Checked inductivity of 40200 backedges. 0 proven. 40200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:19,494 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:19,494 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [202] total 202 [2018-07-25 08:47:19,495 INFO L451 AbstractCegarLoop]: Interpolant automaton has 203 states [2018-07-25 08:47:19,498 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2018-07-25 08:47:19,500 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20503, Invalid=20503, Unknown=0, NotChecked=0, Total=41006 [2018-07-25 08:47:19,501 INFO L87 Difference]: Start difference. First operand 405 states and 405 transitions. Second operand 203 states. [2018-07-25 08:47:21,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:21,710 INFO L93 Difference]: Finished difference Result 409 states and 409 transitions. [2018-07-25 08:47:21,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2018-07-25 08:47:21,710 INFO L78 Accepts]: Start accepts. Automaton has 203 states. Word has length 404 [2018-07-25 08:47:21,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:21,711 INFO L225 Difference]: With dead ends: 409 [2018-07-25 08:47:21,711 INFO L226 Difference]: Without dead ends: 407 [2018-07-25 08:47:21,714 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20503, Invalid=20503, Unknown=0, NotChecked=0, Total=41006 [2018-07-25 08:47:21,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2018-07-25 08:47:21,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 407. [2018-07-25 08:47:21,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2018-07-25 08:47:21,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 407 transitions. [2018-07-25 08:47:21,718 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 407 transitions. Word has length 404 [2018-07-25 08:47:21,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:21,718 INFO L472 AbstractCegarLoop]: Abstraction has 407 states and 407 transitions. [2018-07-25 08:47:21,718 INFO L473 AbstractCegarLoop]: Interpolant automaton has 203 states. [2018-07-25 08:47:21,718 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 407 transitions. [2018-07-25 08:47:21,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2018-07-25 08:47:21,720 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:21,720 INFO L354 BasicCegarLoop]: trace histogram [202, 201, 1, 1, 1] [2018-07-25 08:47:21,720 INFO L415 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:21,721 INFO L82 PathProgramCache]: Analyzing trace with hash -524143407, now seen corresponding path program 201 times [2018-07-25 08:47:21,721 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:21,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:22,917 INFO L134 CoverageAnalysis]: Checked inductivity of 40602 backedges. 0 proven. 40602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:22,917 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:22,917 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [203] total 203 [2018-07-25 08:47:22,918 INFO L451 AbstractCegarLoop]: Interpolant automaton has 204 states [2018-07-25 08:47:22,921 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2018-07-25 08:47:22,925 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20706, Invalid=20706, Unknown=0, NotChecked=0, Total=41412 [2018-07-25 08:47:22,925 INFO L87 Difference]: Start difference. First operand 407 states and 407 transitions. Second operand 204 states. [2018-07-25 08:47:25,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:25,084 INFO L93 Difference]: Finished difference Result 411 states and 411 transitions. [2018-07-25 08:47:25,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2018-07-25 08:47:25,084 INFO L78 Accepts]: Start accepts. Automaton has 204 states. Word has length 406 [2018-07-25 08:47:25,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:25,085 INFO L225 Difference]: With dead ends: 411 [2018-07-25 08:47:25,085 INFO L226 Difference]: Without dead ends: 409 [2018-07-25 08:47:25,088 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20706, Invalid=20706, Unknown=0, NotChecked=0, Total=41412 [2018-07-25 08:47:25,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2018-07-25 08:47:25,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 409. [2018-07-25 08:47:25,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2018-07-25 08:47:25,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 409 transitions. [2018-07-25 08:47:25,093 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 409 transitions. Word has length 406 [2018-07-25 08:47:25,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:25,093 INFO L472 AbstractCegarLoop]: Abstraction has 409 states and 409 transitions. [2018-07-25 08:47:25,093 INFO L473 AbstractCegarLoop]: Interpolant automaton has 204 states. [2018-07-25 08:47:25,093 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 409 transitions. [2018-07-25 08:47:25,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-07-25 08:47:25,095 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:25,095 INFO L354 BasicCegarLoop]: trace histogram [203, 202, 1, 1, 1] [2018-07-25 08:47:25,095 INFO L415 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:25,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1190588405, now seen corresponding path program 202 times [2018-07-25 08:47:25,095 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:25,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:26,341 INFO L134 CoverageAnalysis]: Checked inductivity of 41006 backedges. 0 proven. 41006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:26,341 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:26,341 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [204] total 204 [2018-07-25 08:47:26,342 INFO L451 AbstractCegarLoop]: Interpolant automaton has 205 states [2018-07-25 08:47:26,345 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 205 interpolants. [2018-07-25 08:47:26,347 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20910, Invalid=20910, Unknown=0, NotChecked=0, Total=41820 [2018-07-25 08:47:26,347 INFO L87 Difference]: Start difference. First operand 409 states and 409 transitions. Second operand 205 states. [2018-07-25 08:47:27,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:27,328 INFO L93 Difference]: Finished difference Result 413 states and 413 transitions. [2018-07-25 08:47:27,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2018-07-25 08:47:27,328 INFO L78 Accepts]: Start accepts. Automaton has 205 states. Word has length 408 [2018-07-25 08:47:27,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:27,329 INFO L225 Difference]: With dead ends: 413 [2018-07-25 08:47:27,329 INFO L226 Difference]: Without dead ends: 411 [2018-07-25 08:47:27,331 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20910, Invalid=20910, Unknown=0, NotChecked=0, Total=41820 [2018-07-25 08:47:27,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2018-07-25 08:47:27,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 411. [2018-07-25 08:47:27,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2018-07-25 08:47:27,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 411 transitions. [2018-07-25 08:47:27,335 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 411 transitions. Word has length 408 [2018-07-25 08:47:27,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:27,336 INFO L472 AbstractCegarLoop]: Abstraction has 411 states and 411 transitions. [2018-07-25 08:47:27,336 INFO L473 AbstractCegarLoop]: Interpolant automaton has 205 states. [2018-07-25 08:47:27,336 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 411 transitions. [2018-07-25 08:47:27,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2018-07-25 08:47:27,337 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:27,337 INFO L354 BasicCegarLoop]: trace histogram [204, 203, 1, 1, 1] [2018-07-25 08:47:27,337 INFO L415 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:27,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1694104379, now seen corresponding path program 203 times [2018-07-25 08:47:27,337 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:27,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:28,565 INFO L134 CoverageAnalysis]: Checked inductivity of 41412 backedges. 0 proven. 41412 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:28,565 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:28,565 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [205] total 205 [2018-07-25 08:47:28,566 INFO L451 AbstractCegarLoop]: Interpolant automaton has 206 states [2018-07-25 08:47:28,569 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 206 interpolants. [2018-07-25 08:47:28,571 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21115, Invalid=21115, Unknown=0, NotChecked=0, Total=42230 [2018-07-25 08:47:28,571 INFO L87 Difference]: Start difference. First operand 411 states and 411 transitions. Second operand 206 states. [2018-07-25 08:47:29,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:29,445 INFO L93 Difference]: Finished difference Result 415 states and 415 transitions. [2018-07-25 08:47:29,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2018-07-25 08:47:29,445 INFO L78 Accepts]: Start accepts. Automaton has 206 states. Word has length 410 [2018-07-25 08:47:29,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:29,446 INFO L225 Difference]: With dead ends: 415 [2018-07-25 08:47:29,446 INFO L226 Difference]: Without dead ends: 413 [2018-07-25 08:47:29,447 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=21115, Invalid=21115, Unknown=0, NotChecked=0, Total=42230 [2018-07-25 08:47:29,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2018-07-25 08:47:29,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 413. [2018-07-25 08:47:29,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2018-07-25 08:47:29,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 413 transitions. [2018-07-25 08:47:29,452 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 413 transitions. Word has length 410 [2018-07-25 08:47:29,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:29,452 INFO L472 AbstractCegarLoop]: Abstraction has 413 states and 413 transitions. [2018-07-25 08:47:29,452 INFO L473 AbstractCegarLoop]: Interpolant automaton has 206 states. [2018-07-25 08:47:29,452 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 413 transitions. [2018-07-25 08:47:29,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2018-07-25 08:47:29,453 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:29,453 INFO L354 BasicCegarLoop]: trace histogram [205, 204, 1, 1, 1] [2018-07-25 08:47:29,453 INFO L415 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:29,454 INFO L82 PathProgramCache]: Analyzing trace with hash -241650945, now seen corresponding path program 204 times [2018-07-25 08:47:29,454 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:29,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:30,665 INFO L134 CoverageAnalysis]: Checked inductivity of 41820 backedges. 0 proven. 41820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:30,665 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:30,666 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [206] total 206 [2018-07-25 08:47:30,666 INFO L451 AbstractCegarLoop]: Interpolant automaton has 207 states [2018-07-25 08:47:30,669 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 207 interpolants. [2018-07-25 08:47:30,671 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21321, Invalid=21321, Unknown=0, NotChecked=0, Total=42642 [2018-07-25 08:47:30,671 INFO L87 Difference]: Start difference. First operand 413 states and 413 transitions. Second operand 207 states. [2018-07-25 08:47:32,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:32,558 INFO L93 Difference]: Finished difference Result 417 states and 417 transitions. [2018-07-25 08:47:32,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2018-07-25 08:47:32,559 INFO L78 Accepts]: Start accepts. Automaton has 207 states. Word has length 412 [2018-07-25 08:47:32,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:32,560 INFO L225 Difference]: With dead ends: 417 [2018-07-25 08:47:32,560 INFO L226 Difference]: Without dead ends: 415 [2018-07-25 08:47:32,563 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=21321, Invalid=21321, Unknown=0, NotChecked=0, Total=42642 [2018-07-25 08:47:32,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2018-07-25 08:47:32,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2018-07-25 08:47:32,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2018-07-25 08:47:32,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 415 transitions. [2018-07-25 08:47:32,568 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 415 transitions. Word has length 412 [2018-07-25 08:47:32,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:32,568 INFO L472 AbstractCegarLoop]: Abstraction has 415 states and 415 transitions. [2018-07-25 08:47:32,568 INFO L473 AbstractCegarLoop]: Interpolant automaton has 207 states. [2018-07-25 08:47:32,568 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 415 transitions. [2018-07-25 08:47:32,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2018-07-25 08:47:32,570 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:32,570 INFO L354 BasicCegarLoop]: trace histogram [206, 205, 1, 1, 1] [2018-07-25 08:47:32,570 INFO L415 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:32,570 INFO L82 PathProgramCache]: Analyzing trace with hash -298272071, now seen corresponding path program 205 times [2018-07-25 08:47:32,570 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:32,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:33,886 INFO L134 CoverageAnalysis]: Checked inductivity of 42230 backedges. 0 proven. 42230 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:33,887 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:33,887 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [207] total 207 [2018-07-25 08:47:33,887 INFO L451 AbstractCegarLoop]: Interpolant automaton has 208 states [2018-07-25 08:47:33,889 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 208 interpolants. [2018-07-25 08:47:33,890 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21528, Invalid=21528, Unknown=0, NotChecked=0, Total=43056 [2018-07-25 08:47:33,890 INFO L87 Difference]: Start difference. First operand 415 states and 415 transitions. Second operand 208 states. [2018-07-25 08:47:35,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:35,995 INFO L93 Difference]: Finished difference Result 419 states and 419 transitions. [2018-07-25 08:47:35,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2018-07-25 08:47:35,995 INFO L78 Accepts]: Start accepts. Automaton has 208 states. Word has length 414 [2018-07-25 08:47:35,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:35,995 INFO L225 Difference]: With dead ends: 419 [2018-07-25 08:47:35,995 INFO L226 Difference]: Without dead ends: 417 [2018-07-25 08:47:35,997 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=21528, Invalid=21528, Unknown=0, NotChecked=0, Total=43056 [2018-07-25 08:47:35,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2018-07-25 08:47:36,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 417. [2018-07-25 08:47:36,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2018-07-25 08:47:36,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 417 transitions. [2018-07-25 08:47:36,002 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 417 transitions. Word has length 414 [2018-07-25 08:47:36,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:36,002 INFO L472 AbstractCegarLoop]: Abstraction has 417 states and 417 transitions. [2018-07-25 08:47:36,002 INFO L473 AbstractCegarLoop]: Interpolant automaton has 208 states. [2018-07-25 08:47:36,003 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 417 transitions. [2018-07-25 08:47:36,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2018-07-25 08:47:36,004 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:36,004 INFO L354 BasicCegarLoop]: trace histogram [207, 206, 1, 1, 1] [2018-07-25 08:47:36,005 INFO L415 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:36,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1123400691, now seen corresponding path program 206 times [2018-07-25 08:47:36,005 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:36,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:37,270 INFO L134 CoverageAnalysis]: Checked inductivity of 42642 backedges. 0 proven. 42642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:37,271 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:37,271 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [208] total 208 [2018-07-25 08:47:37,271 INFO L451 AbstractCegarLoop]: Interpolant automaton has 209 states [2018-07-25 08:47:37,275 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 209 interpolants. [2018-07-25 08:47:37,278 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21736, Invalid=21736, Unknown=0, NotChecked=0, Total=43472 [2018-07-25 08:47:37,278 INFO L87 Difference]: Start difference. First operand 417 states and 417 transitions. Second operand 209 states. [2018-07-25 08:47:38,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:38,305 INFO L93 Difference]: Finished difference Result 421 states and 421 transitions. [2018-07-25 08:47:38,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2018-07-25 08:47:38,305 INFO L78 Accepts]: Start accepts. Automaton has 209 states. Word has length 416 [2018-07-25 08:47:38,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:38,306 INFO L225 Difference]: With dead ends: 421 [2018-07-25 08:47:38,306 INFO L226 Difference]: Without dead ends: 419 [2018-07-25 08:47:38,309 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=21736, Invalid=21736, Unknown=0, NotChecked=0, Total=43472 [2018-07-25 08:47:38,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2018-07-25 08:47:38,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 419. [2018-07-25 08:47:38,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2018-07-25 08:47:38,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 419 transitions. [2018-07-25 08:47:38,313 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 419 transitions. Word has length 416 [2018-07-25 08:47:38,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:38,313 INFO L472 AbstractCegarLoop]: Abstraction has 419 states and 419 transitions. [2018-07-25 08:47:38,313 INFO L473 AbstractCegarLoop]: Interpolant automaton has 209 states. [2018-07-25 08:47:38,313 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 419 transitions. [2018-07-25 08:47:38,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2018-07-25 08:47:38,314 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:38,314 INFO L354 BasicCegarLoop]: trace histogram [208, 207, 1, 1, 1] [2018-07-25 08:47:38,315 INFO L415 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:38,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1551324845, now seen corresponding path program 207 times [2018-07-25 08:47:38,315 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:38,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:39,653 INFO L134 CoverageAnalysis]: Checked inductivity of 43056 backedges. 0 proven. 43056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:39,653 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:39,653 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [209] total 209 [2018-07-25 08:47:39,654 INFO L451 AbstractCegarLoop]: Interpolant automaton has 210 states [2018-07-25 08:47:39,655 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 210 interpolants. [2018-07-25 08:47:39,656 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21945, Invalid=21945, Unknown=0, NotChecked=0, Total=43890 [2018-07-25 08:47:39,657 INFO L87 Difference]: Start difference. First operand 419 states and 419 transitions. Second operand 210 states. [2018-07-25 08:47:41,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:41,700 INFO L93 Difference]: Finished difference Result 423 states and 423 transitions. [2018-07-25 08:47:41,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2018-07-25 08:47:41,700 INFO L78 Accepts]: Start accepts. Automaton has 210 states. Word has length 418 [2018-07-25 08:47:41,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:41,701 INFO L225 Difference]: With dead ends: 423 [2018-07-25 08:47:41,701 INFO L226 Difference]: Without dead ends: 421 [2018-07-25 08:47:41,703 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=21945, Invalid=21945, Unknown=0, NotChecked=0, Total=43890 [2018-07-25 08:47:41,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2018-07-25 08:47:41,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2018-07-25 08:47:41,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2018-07-25 08:47:41,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 421 transitions. [2018-07-25 08:47:41,707 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 421 transitions. Word has length 418 [2018-07-25 08:47:41,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:41,707 INFO L472 AbstractCegarLoop]: Abstraction has 421 states and 421 transitions. [2018-07-25 08:47:41,707 INFO L473 AbstractCegarLoop]: Interpolant automaton has 210 states. [2018-07-25 08:47:41,708 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 421 transitions. [2018-07-25 08:47:41,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2018-07-25 08:47:41,709 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:41,709 INFO L354 BasicCegarLoop]: trace histogram [209, 208, 1, 1, 1] [2018-07-25 08:47:41,709 INFO L415 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:41,709 INFO L82 PathProgramCache]: Analyzing trace with hash 469576423, now seen corresponding path program 208 times [2018-07-25 08:47:41,709 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:41,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:42,951 INFO L134 CoverageAnalysis]: Checked inductivity of 43472 backedges. 0 proven. 43472 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:42,951 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:42,952 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [210] total 210 [2018-07-25 08:47:42,952 INFO L451 AbstractCegarLoop]: Interpolant automaton has 211 states [2018-07-25 08:47:42,955 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 211 interpolants. [2018-07-25 08:47:42,958 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22155, Invalid=22155, Unknown=0, NotChecked=0, Total=44310 [2018-07-25 08:47:42,958 INFO L87 Difference]: Start difference. First operand 421 states and 421 transitions. Second operand 211 states. [2018-07-25 08:47:44,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:44,198 INFO L93 Difference]: Finished difference Result 425 states and 425 transitions. [2018-07-25 08:47:44,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2018-07-25 08:47:44,198 INFO L78 Accepts]: Start accepts. Automaton has 211 states. Word has length 420 [2018-07-25 08:47:44,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:44,199 INFO L225 Difference]: With dead ends: 425 [2018-07-25 08:47:44,199 INFO L226 Difference]: Without dead ends: 423 [2018-07-25 08:47:44,202 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22155, Invalid=22155, Unknown=0, NotChecked=0, Total=44310 [2018-07-25 08:47:44,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2018-07-25 08:47:44,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 423. [2018-07-25 08:47:44,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2018-07-25 08:47:44,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 423 transitions. [2018-07-25 08:47:44,206 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 423 transitions. Word has length 420 [2018-07-25 08:47:44,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:44,206 INFO L472 AbstractCegarLoop]: Abstraction has 423 states and 423 transitions. [2018-07-25 08:47:44,206 INFO L473 AbstractCegarLoop]: Interpolant automaton has 211 states. [2018-07-25 08:47:44,206 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 423 transitions. [2018-07-25 08:47:44,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2018-07-25 08:47:44,207 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:44,207 INFO L354 BasicCegarLoop]: trace histogram [210, 209, 1, 1, 1] [2018-07-25 08:47:44,207 INFO L415 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:44,208 INFO L82 PathProgramCache]: Analyzing trace with hash 291428513, now seen corresponding path program 209 times [2018-07-25 08:47:44,208 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:44,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:45,549 INFO L134 CoverageAnalysis]: Checked inductivity of 43890 backedges. 0 proven. 43890 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:45,550 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:45,550 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [211] total 211 [2018-07-25 08:47:45,550 INFO L451 AbstractCegarLoop]: Interpolant automaton has 212 states [2018-07-25 08:47:45,553 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 212 interpolants. [2018-07-25 08:47:45,555 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22366, Invalid=22366, Unknown=0, NotChecked=0, Total=44732 [2018-07-25 08:47:45,555 INFO L87 Difference]: Start difference. First operand 423 states and 423 transitions. Second operand 212 states. [2018-07-25 08:47:47,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:47,186 INFO L93 Difference]: Finished difference Result 427 states and 427 transitions. [2018-07-25 08:47:47,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2018-07-25 08:47:47,186 INFO L78 Accepts]: Start accepts. Automaton has 212 states. Word has length 422 [2018-07-25 08:47:47,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:47,187 INFO L225 Difference]: With dead ends: 427 [2018-07-25 08:47:47,187 INFO L226 Difference]: Without dead ends: 425 [2018-07-25 08:47:47,189 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22366, Invalid=22366, Unknown=0, NotChecked=0, Total=44732 [2018-07-25 08:47:47,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2018-07-25 08:47:47,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 425. [2018-07-25 08:47:47,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2018-07-25 08:47:47,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 425 transitions. [2018-07-25 08:47:47,193 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 425 transitions. Word has length 422 [2018-07-25 08:47:47,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:47,193 INFO L472 AbstractCegarLoop]: Abstraction has 425 states and 425 transitions. [2018-07-25 08:47:47,193 INFO L473 AbstractCegarLoop]: Interpolant automaton has 212 states. [2018-07-25 08:47:47,193 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 425 transitions. [2018-07-25 08:47:47,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-07-25 08:47:47,194 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:47,194 INFO L354 BasicCegarLoop]: trace histogram [211, 210, 1, 1, 1] [2018-07-25 08:47:47,195 INFO L415 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:47,195 INFO L82 PathProgramCache]: Analyzing trace with hash 889978843, now seen corresponding path program 210 times [2018-07-25 08:47:47,195 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:47,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:48,475 INFO L134 CoverageAnalysis]: Checked inductivity of 44310 backedges. 0 proven. 44310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:48,475 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:48,475 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [212] total 212 [2018-07-25 08:47:48,476 INFO L451 AbstractCegarLoop]: Interpolant automaton has 213 states [2018-07-25 08:47:48,479 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 213 interpolants. [2018-07-25 08:47:48,481 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22578, Invalid=22578, Unknown=0, NotChecked=0, Total=45156 [2018-07-25 08:47:48,481 INFO L87 Difference]: Start difference. First operand 425 states and 425 transitions. Second operand 213 states. [2018-07-25 08:47:50,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:50,667 INFO L93 Difference]: Finished difference Result 429 states and 429 transitions. [2018-07-25 08:47:50,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2018-07-25 08:47:50,667 INFO L78 Accepts]: Start accepts. Automaton has 213 states. Word has length 424 [2018-07-25 08:47:50,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:50,668 INFO L225 Difference]: With dead ends: 429 [2018-07-25 08:47:50,668 INFO L226 Difference]: Without dead ends: 427 [2018-07-25 08:47:50,671 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22578, Invalid=22578, Unknown=0, NotChecked=0, Total=45156 [2018-07-25 08:47:50,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2018-07-25 08:47:50,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2018-07-25 08:47:50,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2018-07-25 08:47:50,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 427 transitions. [2018-07-25 08:47:50,675 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 427 transitions. Word has length 424 [2018-07-25 08:47:50,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:50,675 INFO L472 AbstractCegarLoop]: Abstraction has 427 states and 427 transitions. [2018-07-25 08:47:50,675 INFO L473 AbstractCegarLoop]: Interpolant automaton has 213 states. [2018-07-25 08:47:50,675 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 427 transitions. [2018-07-25 08:47:50,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2018-07-25 08:47:50,677 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:50,677 INFO L354 BasicCegarLoop]: trace histogram [212, 211, 1, 1, 1] [2018-07-25 08:47:50,677 INFO L415 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:50,677 INFO L82 PathProgramCache]: Analyzing trace with hash 571228309, now seen corresponding path program 211 times [2018-07-25 08:47:50,677 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:50,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:52,042 INFO L134 CoverageAnalysis]: Checked inductivity of 44732 backedges. 0 proven. 44732 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:52,042 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:52,043 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [213] total 213 [2018-07-25 08:47:52,043 INFO L451 AbstractCegarLoop]: Interpolant automaton has 214 states [2018-07-25 08:47:52,047 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 214 interpolants. [2018-07-25 08:47:52,049 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22791, Invalid=22791, Unknown=0, NotChecked=0, Total=45582 [2018-07-25 08:47:52,050 INFO L87 Difference]: Start difference. First operand 427 states and 427 transitions. Second operand 214 states. [2018-07-25 08:47:53,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:53,619 INFO L93 Difference]: Finished difference Result 431 states and 431 transitions. [2018-07-25 08:47:53,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2018-07-25 08:47:53,620 INFO L78 Accepts]: Start accepts. Automaton has 214 states. Word has length 426 [2018-07-25 08:47:53,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:53,620 INFO L225 Difference]: With dead ends: 431 [2018-07-25 08:47:53,621 INFO L226 Difference]: Without dead ends: 429 [2018-07-25 08:47:53,623 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22791, Invalid=22791, Unknown=0, NotChecked=0, Total=45582 [2018-07-25 08:47:53,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2018-07-25 08:47:53,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2018-07-25 08:47:53,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2018-07-25 08:47:53,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 429 transitions. [2018-07-25 08:47:53,627 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 429 transitions. Word has length 426 [2018-07-25 08:47:53,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:53,628 INFO L472 AbstractCegarLoop]: Abstraction has 429 states and 429 transitions. [2018-07-25 08:47:53,628 INFO L473 AbstractCegarLoop]: Interpolant automaton has 214 states. [2018-07-25 08:47:53,628 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 429 transitions. [2018-07-25 08:47:53,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2018-07-25 08:47:53,629 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:53,629 INFO L354 BasicCegarLoop]: trace histogram [213, 212, 1, 1, 1] [2018-07-25 08:47:53,629 INFO L415 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:53,629 INFO L82 PathProgramCache]: Analyzing trace with hash -805356849, now seen corresponding path program 212 times [2018-07-25 08:47:53,629 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:53,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:55,031 INFO L134 CoverageAnalysis]: Checked inductivity of 45156 backedges. 0 proven. 45156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:55,031 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:55,031 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [214] total 214 [2018-07-25 08:47:55,032 INFO L451 AbstractCegarLoop]: Interpolant automaton has 215 states [2018-07-25 08:47:55,033 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 215 interpolants. [2018-07-25 08:47:55,034 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23005, Invalid=23005, Unknown=0, NotChecked=0, Total=46010 [2018-07-25 08:47:55,034 INFO L87 Difference]: Start difference. First operand 429 states and 429 transitions. Second operand 215 states. [2018-07-25 08:47:56,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:56,133 INFO L93 Difference]: Finished difference Result 433 states and 433 transitions. [2018-07-25 08:47:56,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 215 states. [2018-07-25 08:47:56,133 INFO L78 Accepts]: Start accepts. Automaton has 215 states. Word has length 428 [2018-07-25 08:47:56,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:56,134 INFO L225 Difference]: With dead ends: 433 [2018-07-25 08:47:56,134 INFO L226 Difference]: Without dead ends: 431 [2018-07-25 08:47:56,135 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=23005, Invalid=23005, Unknown=0, NotChecked=0, Total=46010 [2018-07-25 08:47:56,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2018-07-25 08:47:56,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 431. [2018-07-25 08:47:56,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2018-07-25 08:47:56,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 431 transitions. [2018-07-25 08:47:56,139 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 431 transitions. Word has length 428 [2018-07-25 08:47:56,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:56,139 INFO L472 AbstractCegarLoop]: Abstraction has 431 states and 431 transitions. [2018-07-25 08:47:56,139 INFO L473 AbstractCegarLoop]: Interpolant automaton has 215 states. [2018-07-25 08:47:56,139 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 431 transitions. [2018-07-25 08:47:56,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2018-07-25 08:47:56,141 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:56,141 INFO L354 BasicCegarLoop]: trace histogram [214, 213, 1, 1, 1] [2018-07-25 08:47:56,141 INFO L415 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:56,141 INFO L82 PathProgramCache]: Analyzing trace with hash -853766519, now seen corresponding path program 213 times [2018-07-25 08:47:56,141 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:56,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:57,533 INFO L134 CoverageAnalysis]: Checked inductivity of 45582 backedges. 0 proven. 45582 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:57,533 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:57,533 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [215] total 215 [2018-07-25 08:47:57,534 INFO L451 AbstractCegarLoop]: Interpolant automaton has 216 states [2018-07-25 08:47:57,537 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2018-07-25 08:47:57,539 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23220, Invalid=23220, Unknown=0, NotChecked=0, Total=46440 [2018-07-25 08:47:57,539 INFO L87 Difference]: Start difference. First operand 431 states and 431 transitions. Second operand 216 states. [2018-07-25 08:48:00,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:00,032 INFO L93 Difference]: Finished difference Result 435 states and 435 transitions. [2018-07-25 08:48:00,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 216 states. [2018-07-25 08:48:00,033 INFO L78 Accepts]: Start accepts. Automaton has 216 states. Word has length 430 [2018-07-25 08:48:00,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:00,033 INFO L225 Difference]: With dead ends: 435 [2018-07-25 08:48:00,033 INFO L226 Difference]: Without dead ends: 433 [2018-07-25 08:48:00,037 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=23220, Invalid=23220, Unknown=0, NotChecked=0, Total=46440 [2018-07-25 08:48:00,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2018-07-25 08:48:00,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 433. [2018-07-25 08:48:00,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433 states. [2018-07-25 08:48:00,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 433 transitions. [2018-07-25 08:48:00,042 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 433 transitions. Word has length 430 [2018-07-25 08:48:00,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:00,042 INFO L472 AbstractCegarLoop]: Abstraction has 433 states and 433 transitions. [2018-07-25 08:48:00,042 INFO L473 AbstractCegarLoop]: Interpolant automaton has 216 states. [2018-07-25 08:48:00,043 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 433 transitions. [2018-07-25 08:48:00,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2018-07-25 08:48:00,044 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:00,044 INFO L354 BasicCegarLoop]: trace histogram [215, 214, 1, 1, 1] [2018-07-25 08:48:00,044 INFO L415 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:00,044 INFO L82 PathProgramCache]: Analyzing trace with hash -130819133, now seen corresponding path program 214 times [2018-07-25 08:48:00,045 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:00,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:01,429 INFO L134 CoverageAnalysis]: Checked inductivity of 46010 backedges. 0 proven. 46010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:01,430 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:01,430 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [216] total 216 [2018-07-25 08:48:01,430 INFO L451 AbstractCegarLoop]: Interpolant automaton has 217 states [2018-07-25 08:48:01,432 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 217 interpolants. [2018-07-25 08:48:01,434 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23436, Invalid=23436, Unknown=0, NotChecked=0, Total=46872 [2018-07-25 08:48:01,434 INFO L87 Difference]: Start difference. First operand 433 states and 433 transitions. Second operand 217 states. [2018-07-25 08:48:02,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:02,754 INFO L93 Difference]: Finished difference Result 437 states and 437 transitions. [2018-07-25 08:48:02,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 217 states. [2018-07-25 08:48:02,754 INFO L78 Accepts]: Start accepts. Automaton has 217 states. Word has length 432 [2018-07-25 08:48:02,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:02,755 INFO L225 Difference]: With dead ends: 437 [2018-07-25 08:48:02,755 INFO L226 Difference]: Without dead ends: 435 [2018-07-25 08:48:02,757 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=23436, Invalid=23436, Unknown=0, NotChecked=0, Total=46872 [2018-07-25 08:48:02,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2018-07-25 08:48:02,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 435. [2018-07-25 08:48:02,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2018-07-25 08:48:02,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 435 transitions. [2018-07-25 08:48:02,762 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 435 transitions. Word has length 432 [2018-07-25 08:48:02,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:02,762 INFO L472 AbstractCegarLoop]: Abstraction has 435 states and 435 transitions. [2018-07-25 08:48:02,762 INFO L473 AbstractCegarLoop]: Interpolant automaton has 217 states. [2018-07-25 08:48:02,762 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 435 transitions. [2018-07-25 08:48:02,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2018-07-25 08:48:02,764 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:02,764 INFO L354 BasicCegarLoop]: trace histogram [216, 215, 1, 1, 1] [2018-07-25 08:48:02,764 INFO L415 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:02,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1163083139, now seen corresponding path program 215 times [2018-07-25 08:48:02,764 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:03,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:04,179 INFO L134 CoverageAnalysis]: Checked inductivity of 46440 backedges. 0 proven. 46440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:04,179 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:04,179 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [217] total 217 [2018-07-25 08:48:04,179 INFO L451 AbstractCegarLoop]: Interpolant automaton has 218 states [2018-07-25 08:48:04,183 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 218 interpolants. [2018-07-25 08:48:04,186 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23653, Invalid=23653, Unknown=0, NotChecked=0, Total=47306 [2018-07-25 08:48:04,186 INFO L87 Difference]: Start difference. First operand 435 states and 435 transitions. Second operand 218 states. [2018-07-25 08:48:06,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:06,716 INFO L93 Difference]: Finished difference Result 439 states and 439 transitions. [2018-07-25 08:48:06,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2018-07-25 08:48:06,716 INFO L78 Accepts]: Start accepts. Automaton has 218 states. Word has length 434 [2018-07-25 08:48:06,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:06,717 INFO L225 Difference]: With dead ends: 439 [2018-07-25 08:48:06,717 INFO L226 Difference]: Without dead ends: 437 [2018-07-25 08:48:06,720 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=23653, Invalid=23653, Unknown=0, NotChecked=0, Total=47306 [2018-07-25 08:48:06,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2018-07-25 08:48:06,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 437. [2018-07-25 08:48:06,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2018-07-25 08:48:06,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 437 transitions. [2018-07-25 08:48:06,725 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 437 transitions. Word has length 434 [2018-07-25 08:48:06,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:06,725 INFO L472 AbstractCegarLoop]: Abstraction has 437 states and 437 transitions. [2018-07-25 08:48:06,725 INFO L473 AbstractCegarLoop]: Interpolant automaton has 218 states. [2018-07-25 08:48:06,725 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 437 transitions. [2018-07-25 08:48:06,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2018-07-25 08:48:06,726 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:06,726 INFO L354 BasicCegarLoop]: trace histogram [217, 216, 1, 1, 1] [2018-07-25 08:48:06,727 INFO L415 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:06,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1031347529, now seen corresponding path program 216 times [2018-07-25 08:48:06,727 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:07,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:08,209 INFO L134 CoverageAnalysis]: Checked inductivity of 46872 backedges. 0 proven. 46872 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:08,209 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:08,209 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [218] total 218 [2018-07-25 08:48:08,210 INFO L451 AbstractCegarLoop]: Interpolant automaton has 219 states [2018-07-25 08:48:08,213 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 219 interpolants. [2018-07-25 08:48:08,215 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23871, Invalid=23871, Unknown=0, NotChecked=0, Total=47742 [2018-07-25 08:48:08,216 INFO L87 Difference]: Start difference. First operand 437 states and 437 transitions. Second operand 219 states. [2018-07-25 08:48:10,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:10,814 INFO L93 Difference]: Finished difference Result 441 states and 441 transitions. [2018-07-25 08:48:10,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 219 states. [2018-07-25 08:48:10,814 INFO L78 Accepts]: Start accepts. Automaton has 219 states. Word has length 436 [2018-07-25 08:48:10,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:10,815 INFO L225 Difference]: With dead ends: 441 [2018-07-25 08:48:10,815 INFO L226 Difference]: Without dead ends: 439 [2018-07-25 08:48:10,818 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=23871, Invalid=23871, Unknown=0, NotChecked=0, Total=47742 [2018-07-25 08:48:10,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2018-07-25 08:48:10,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2018-07-25 08:48:10,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2018-07-25 08:48:10,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 439 transitions. [2018-07-25 08:48:10,822 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 439 transitions. Word has length 436 [2018-07-25 08:48:10,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:10,822 INFO L472 AbstractCegarLoop]: Abstraction has 439 states and 439 transitions. [2018-07-25 08:48:10,822 INFO L473 AbstractCegarLoop]: Interpolant automaton has 219 states. [2018-07-25 08:48:10,822 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 439 transitions. [2018-07-25 08:48:10,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2018-07-25 08:48:10,824 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:10,824 INFO L354 BasicCegarLoop]: trace histogram [218, 217, 1, 1, 1] [2018-07-25 08:48:10,824 INFO L415 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:10,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1012522097, now seen corresponding path program 217 times [2018-07-25 08:48:10,824 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:11,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:12,299 INFO L134 CoverageAnalysis]: Checked inductivity of 47306 backedges. 0 proven. 47306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:12,299 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:12,299 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [219] total 219 [2018-07-25 08:48:12,299 INFO L451 AbstractCegarLoop]: Interpolant automaton has 220 states [2018-07-25 08:48:12,301 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 220 interpolants. [2018-07-25 08:48:12,303 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24090, Invalid=24090, Unknown=0, NotChecked=0, Total=48180 [2018-07-25 08:48:12,303 INFO L87 Difference]: Start difference. First operand 439 states and 439 transitions. Second operand 220 states. [2018-07-25 08:48:13,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:13,262 INFO L93 Difference]: Finished difference Result 443 states and 443 transitions. [2018-07-25 08:48:13,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 220 states. [2018-07-25 08:48:13,262 INFO L78 Accepts]: Start accepts. Automaton has 220 states. Word has length 438 [2018-07-25 08:48:13,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:13,263 INFO L225 Difference]: With dead ends: 443 [2018-07-25 08:48:13,263 INFO L226 Difference]: Without dead ends: 441 [2018-07-25 08:48:13,265 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=24090, Invalid=24090, Unknown=0, NotChecked=0, Total=48180 [2018-07-25 08:48:13,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2018-07-25 08:48:13,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 441. [2018-07-25 08:48:13,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2018-07-25 08:48:13,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 441 transitions. [2018-07-25 08:48:13,269 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 441 transitions. Word has length 438 [2018-07-25 08:48:13,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:13,269 INFO L472 AbstractCegarLoop]: Abstraction has 441 states and 441 transitions. [2018-07-25 08:48:13,269 INFO L473 AbstractCegarLoop]: Interpolant automaton has 220 states. [2018-07-25 08:48:13,269 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 441 transitions. [2018-07-25 08:48:13,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2018-07-25 08:48:13,271 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:13,271 INFO L354 BasicCegarLoop]: trace histogram [219, 218, 1, 1, 1] [2018-07-25 08:48:13,271 INFO L415 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:13,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1923788885, now seen corresponding path program 218 times [2018-07-25 08:48:13,271 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:13,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:14,684 INFO L134 CoverageAnalysis]: Checked inductivity of 47742 backedges. 0 proven. 47742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:14,685 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:14,685 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [220] total 220 [2018-07-25 08:48:14,685 INFO L451 AbstractCegarLoop]: Interpolant automaton has 221 states [2018-07-25 08:48:14,688 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 221 interpolants. [2018-07-25 08:48:14,690 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24310, Invalid=24310, Unknown=0, NotChecked=0, Total=48620 [2018-07-25 08:48:14,690 INFO L87 Difference]: Start difference. First operand 441 states and 441 transitions. Second operand 221 states. [2018-07-25 08:48:15,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:15,619 INFO L93 Difference]: Finished difference Result 445 states and 445 transitions. [2018-07-25 08:48:15,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 221 states. [2018-07-25 08:48:15,619 INFO L78 Accepts]: Start accepts. Automaton has 221 states. Word has length 440 [2018-07-25 08:48:15,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:15,620 INFO L225 Difference]: With dead ends: 445 [2018-07-25 08:48:15,620 INFO L226 Difference]: Without dead ends: 443 [2018-07-25 08:48:15,624 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=24310, Invalid=24310, Unknown=0, NotChecked=0, Total=48620 [2018-07-25 08:48:15,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2018-07-25 08:48:15,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 443. [2018-07-25 08:48:15,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2018-07-25 08:48:15,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 443 transitions. [2018-07-25 08:48:15,628 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 443 transitions. Word has length 440 [2018-07-25 08:48:15,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:15,628 INFO L472 AbstractCegarLoop]: Abstraction has 443 states and 443 transitions. [2018-07-25 08:48:15,628 INFO L473 AbstractCegarLoop]: Interpolant automaton has 221 states. [2018-07-25 08:48:15,628 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 443 transitions. [2018-07-25 08:48:15,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2018-07-25 08:48:15,630 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:15,630 INFO L354 BasicCegarLoop]: trace histogram [220, 219, 1, 1, 1] [2018-07-25 08:48:15,630 INFO L415 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:15,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1925129115, now seen corresponding path program 219 times [2018-07-25 08:48:15,630 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:15,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:17,124 INFO L134 CoverageAnalysis]: Checked inductivity of 48180 backedges. 0 proven. 48180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:17,124 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:17,124 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [221] total 221 [2018-07-25 08:48:17,125 INFO L451 AbstractCegarLoop]: Interpolant automaton has 222 states [2018-07-25 08:48:17,128 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 222 interpolants. [2018-07-25 08:48:17,130 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24531, Invalid=24531, Unknown=0, NotChecked=0, Total=49062 [2018-07-25 08:48:17,131 INFO L87 Difference]: Start difference. First operand 443 states and 443 transitions. Second operand 222 states. [2018-07-25 08:48:19,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:19,331 INFO L93 Difference]: Finished difference Result 447 states and 447 transitions. [2018-07-25 08:48:19,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 222 states. [2018-07-25 08:48:19,332 INFO L78 Accepts]: Start accepts. Automaton has 222 states. Word has length 442 [2018-07-25 08:48:19,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:19,332 INFO L225 Difference]: With dead ends: 447 [2018-07-25 08:48:19,332 INFO L226 Difference]: Without dead ends: 445 [2018-07-25 08:48:19,335 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=24531, Invalid=24531, Unknown=0, NotChecked=0, Total=49062 [2018-07-25 08:48:19,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2018-07-25 08:48:19,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 445. [2018-07-25 08:48:19,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2018-07-25 08:48:19,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 445 transitions. [2018-07-25 08:48:19,339 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 445 transitions. Word has length 442 [2018-07-25 08:48:19,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:19,339 INFO L472 AbstractCegarLoop]: Abstraction has 445 states and 445 transitions. [2018-07-25 08:48:19,339 INFO L473 AbstractCegarLoop]: Interpolant automaton has 222 states. [2018-07-25 08:48:19,340 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 445 transitions. [2018-07-25 08:48:19,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2018-07-25 08:48:19,341 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:19,341 INFO L354 BasicCegarLoop]: trace histogram [221, 220, 1, 1, 1] [2018-07-25 08:48:19,341 INFO L415 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:19,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1081877151, now seen corresponding path program 220 times [2018-07-25 08:48:19,342 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:19,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:21,056 INFO L134 CoverageAnalysis]: Checked inductivity of 48620 backedges. 0 proven. 48620 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:21,056 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:21,056 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [222] total 222 [2018-07-25 08:48:21,057 INFO L451 AbstractCegarLoop]: Interpolant automaton has 223 states [2018-07-25 08:48:21,059 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 223 interpolants. [2018-07-25 08:48:21,061 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24753, Invalid=24753, Unknown=0, NotChecked=0, Total=49506 [2018-07-25 08:48:21,061 INFO L87 Difference]: Start difference. First operand 445 states and 445 transitions. Second operand 223 states. [2018-07-25 08:48:23,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:23,930 INFO L93 Difference]: Finished difference Result 449 states and 449 transitions. [2018-07-25 08:48:23,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2018-07-25 08:48:23,930 INFO L78 Accepts]: Start accepts. Automaton has 223 states. Word has length 444 [2018-07-25 08:48:23,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:23,931 INFO L225 Difference]: With dead ends: 449 [2018-07-25 08:48:23,931 INFO L226 Difference]: Without dead ends: 447 [2018-07-25 08:48:23,932 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=24753, Invalid=24753, Unknown=0, NotChecked=0, Total=49506 [2018-07-25 08:48:23,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2018-07-25 08:48:23,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2018-07-25 08:48:23,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2018-07-25 08:48:23,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 447 transitions. [2018-07-25 08:48:23,936 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 447 transitions. Word has length 444 [2018-07-25 08:48:23,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:23,937 INFO L472 AbstractCegarLoop]: Abstraction has 447 states and 447 transitions. [2018-07-25 08:48:23,937 INFO L473 AbstractCegarLoop]: Interpolant automaton has 223 states. [2018-07-25 08:48:23,937 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 447 transitions. [2018-07-25 08:48:23,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2018-07-25 08:48:23,938 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:23,938 INFO L354 BasicCegarLoop]: trace histogram [222, 221, 1, 1, 1] [2018-07-25 08:48:23,938 INFO L415 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:23,938 INFO L82 PathProgramCache]: Analyzing trace with hash 301908569, now seen corresponding path program 221 times [2018-07-25 08:48:23,938 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:24,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:25,470 INFO L134 CoverageAnalysis]: Checked inductivity of 49062 backedges. 0 proven. 49062 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:25,471 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:25,471 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [223] total 223 [2018-07-25 08:48:25,471 INFO L451 AbstractCegarLoop]: Interpolant automaton has 224 states [2018-07-25 08:48:25,475 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 224 interpolants. [2018-07-25 08:48:25,477 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24976, Invalid=24976, Unknown=0, NotChecked=0, Total=49952 [2018-07-25 08:48:25,478 INFO L87 Difference]: Start difference. First operand 447 states and 447 transitions. Second operand 224 states. [2018-07-25 08:48:28,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:28,268 INFO L93 Difference]: Finished difference Result 451 states and 451 transitions. [2018-07-25 08:48:28,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 224 states. [2018-07-25 08:48:28,268 INFO L78 Accepts]: Start accepts. Automaton has 224 states. Word has length 446 [2018-07-25 08:48:28,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:28,269 INFO L225 Difference]: With dead ends: 451 [2018-07-25 08:48:28,270 INFO L226 Difference]: Without dead ends: 449 [2018-07-25 08:48:28,274 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=24976, Invalid=24976, Unknown=0, NotChecked=0, Total=49952 [2018-07-25 08:48:28,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2018-07-25 08:48:28,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 449. [2018-07-25 08:48:28,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2018-07-25 08:48:28,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 449 transitions. [2018-07-25 08:48:28,279 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 449 transitions. Word has length 446 [2018-07-25 08:48:28,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:28,279 INFO L472 AbstractCegarLoop]: Abstraction has 449 states and 449 transitions. [2018-07-25 08:48:28,279 INFO L473 AbstractCegarLoop]: Interpolant automaton has 224 states. [2018-07-25 08:48:28,280 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 449 transitions. [2018-07-25 08:48:28,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2018-07-25 08:48:28,281 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:28,281 INFO L354 BasicCegarLoop]: trace histogram [223, 222, 1, 1, 1] [2018-07-25 08:48:28,281 INFO L415 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:28,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1923589229, now seen corresponding path program 222 times [2018-07-25 08:48:28,281 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:28,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:29,819 INFO L134 CoverageAnalysis]: Checked inductivity of 49506 backedges. 0 proven. 49506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:29,819 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:29,819 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [224] total 224 [2018-07-25 08:48:29,820 INFO L451 AbstractCegarLoop]: Interpolant automaton has 225 states [2018-07-25 08:48:29,823 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 225 interpolants. [2018-07-25 08:48:29,827 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25200, Invalid=25200, Unknown=0, NotChecked=0, Total=50400 [2018-07-25 08:48:29,827 INFO L87 Difference]: Start difference. First operand 449 states and 449 transitions. Second operand 225 states. [2018-07-25 08:48:32,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:32,196 INFO L93 Difference]: Finished difference Result 453 states and 453 transitions. [2018-07-25 08:48:32,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 225 states. [2018-07-25 08:48:32,197 INFO L78 Accepts]: Start accepts. Automaton has 225 states. Word has length 448 [2018-07-25 08:48:32,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:32,198 INFO L225 Difference]: With dead ends: 453 [2018-07-25 08:48:32,198 INFO L226 Difference]: Without dead ends: 451 [2018-07-25 08:48:32,201 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=25200, Invalid=25200, Unknown=0, NotChecked=0, Total=50400 [2018-07-25 08:48:32,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2018-07-25 08:48:32,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 451. [2018-07-25 08:48:32,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 451 states. [2018-07-25 08:48:32,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 451 transitions. [2018-07-25 08:48:32,205 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 451 transitions. Word has length 448 [2018-07-25 08:48:32,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:32,205 INFO L472 AbstractCegarLoop]: Abstraction has 451 states and 451 transitions. [2018-07-25 08:48:32,205 INFO L473 AbstractCegarLoop]: Interpolant automaton has 225 states. [2018-07-25 08:48:32,205 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 451 transitions. [2018-07-25 08:48:32,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2018-07-25 08:48:32,207 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:32,207 INFO L354 BasicCegarLoop]: trace histogram [224, 223, 1, 1, 1] [2018-07-25 08:48:32,207 INFO L415 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:32,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1733259699, now seen corresponding path program 223 times [2018-07-25 08:48:32,207 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:32,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:33,806 INFO L134 CoverageAnalysis]: Checked inductivity of 49952 backedges. 0 proven. 49952 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:33,806 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:33,806 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [225] total 225 [2018-07-25 08:48:33,807 INFO L451 AbstractCegarLoop]: Interpolant automaton has 226 states [2018-07-25 08:48:33,808 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 226 interpolants. [2018-07-25 08:48:33,809 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25425, Invalid=25425, Unknown=0, NotChecked=0, Total=50850 [2018-07-25 08:48:33,809 INFO L87 Difference]: Start difference. First operand 451 states and 451 transitions. Second operand 226 states. [2018-07-25 08:48:35,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:35,911 INFO L93 Difference]: Finished difference Result 455 states and 455 transitions. [2018-07-25 08:48:35,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 226 states. [2018-07-25 08:48:35,911 INFO L78 Accepts]: Start accepts. Automaton has 226 states. Word has length 450 [2018-07-25 08:48:35,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:35,912 INFO L225 Difference]: With dead ends: 455 [2018-07-25 08:48:35,912 INFO L226 Difference]: Without dead ends: 453 [2018-07-25 08:48:35,913 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=25425, Invalid=25425, Unknown=0, NotChecked=0, Total=50850 [2018-07-25 08:48:35,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2018-07-25 08:48:35,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 453. [2018-07-25 08:48:35,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2018-07-25 08:48:35,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 453 transitions. [2018-07-25 08:48:35,917 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 453 transitions. Word has length 450 [2018-07-25 08:48:35,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:35,918 INFO L472 AbstractCegarLoop]: Abstraction has 453 states and 453 transitions. [2018-07-25 08:48:35,918 INFO L473 AbstractCegarLoop]: Interpolant automaton has 226 states. [2018-07-25 08:48:35,918 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 453 transitions. [2018-07-25 08:48:35,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2018-07-25 08:48:35,919 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:35,919 INFO L354 BasicCegarLoop]: trace histogram [225, 224, 1, 1, 1] [2018-07-25 08:48:35,919 INFO L415 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:35,920 INFO L82 PathProgramCache]: Analyzing trace with hash 784792199, now seen corresponding path program 224 times [2018-07-25 08:48:35,920 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:36,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:37,434 INFO L134 CoverageAnalysis]: Checked inductivity of 50400 backedges. 0 proven. 50400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:37,434 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:37,435 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [226] total 226 [2018-07-25 08:48:37,435 INFO L451 AbstractCegarLoop]: Interpolant automaton has 227 states [2018-07-25 08:48:37,438 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 227 interpolants. [2018-07-25 08:48:37,441 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25651, Invalid=25651, Unknown=0, NotChecked=0, Total=51302 [2018-07-25 08:48:37,441 INFO L87 Difference]: Start difference. First operand 453 states and 453 transitions. Second operand 227 states. [2018-07-25 08:48:39,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:39,607 INFO L93 Difference]: Finished difference Result 457 states and 457 transitions. [2018-07-25 08:48:39,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 227 states. [2018-07-25 08:48:39,607 INFO L78 Accepts]: Start accepts. Automaton has 227 states. Word has length 452 [2018-07-25 08:48:39,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:39,608 INFO L225 Difference]: With dead ends: 457 [2018-07-25 08:48:39,608 INFO L226 Difference]: Without dead ends: 455 [2018-07-25 08:48:39,611 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=25651, Invalid=25651, Unknown=0, NotChecked=0, Total=51302 [2018-07-25 08:48:39,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2018-07-25 08:48:39,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 455. [2018-07-25 08:48:39,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2018-07-25 08:48:39,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 455 transitions. [2018-07-25 08:48:39,615 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 455 transitions. Word has length 452 [2018-07-25 08:48:39,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:39,615 INFO L472 AbstractCegarLoop]: Abstraction has 455 states and 455 transitions. [2018-07-25 08:48:39,615 INFO L473 AbstractCegarLoop]: Interpolant automaton has 227 states. [2018-07-25 08:48:39,615 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 455 transitions. [2018-07-25 08:48:39,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2018-07-25 08:48:39,617 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:39,617 INFO L354 BasicCegarLoop]: trace histogram [226, 225, 1, 1, 1] [2018-07-25 08:48:39,618 INFO L415 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:39,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1728888767, now seen corresponding path program 225 times [2018-07-25 08:48:39,618 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:39,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:41,308 INFO L134 CoverageAnalysis]: Checked inductivity of 50850 backedges. 0 proven. 50850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:41,308 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:41,308 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [227] total 227 [2018-07-25 08:48:41,308 INFO L451 AbstractCegarLoop]: Interpolant automaton has 228 states [2018-07-25 08:48:41,312 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 228 interpolants. [2018-07-25 08:48:41,314 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25878, Invalid=25878, Unknown=0, NotChecked=0, Total=51756 [2018-07-25 08:48:41,314 INFO L87 Difference]: Start difference. First operand 455 states and 455 transitions. Second operand 228 states. [2018-07-25 08:48:43,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:43,533 INFO L93 Difference]: Finished difference Result 459 states and 459 transitions. [2018-07-25 08:48:43,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 228 states. [2018-07-25 08:48:43,534 INFO L78 Accepts]: Start accepts. Automaton has 228 states. Word has length 454 [2018-07-25 08:48:43,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:43,535 INFO L225 Difference]: With dead ends: 459 [2018-07-25 08:48:43,535 INFO L226 Difference]: Without dead ends: 457 [2018-07-25 08:48:43,538 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=25878, Invalid=25878, Unknown=0, NotChecked=0, Total=51756 [2018-07-25 08:48:43,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2018-07-25 08:48:43,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 457. [2018-07-25 08:48:43,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 457 states. [2018-07-25 08:48:43,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 457 transitions. [2018-07-25 08:48:43,545 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 457 transitions. Word has length 454 [2018-07-25 08:48:43,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:43,546 INFO L472 AbstractCegarLoop]: Abstraction has 457 states and 457 transitions. [2018-07-25 08:48:43,546 INFO L473 AbstractCegarLoop]: Interpolant automaton has 228 states. [2018-07-25 08:48:43,546 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 457 transitions. [2018-07-25 08:48:43,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2018-07-25 08:48:43,548 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:43,549 INFO L354 BasicCegarLoop]: trace histogram [227, 226, 1, 1, 1] [2018-07-25 08:48:43,549 INFO L415 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:43,549 INFO L82 PathProgramCache]: Analyzing trace with hash 690290555, now seen corresponding path program 226 times [2018-07-25 08:48:43,549 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:43,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:45,354 INFO L134 CoverageAnalysis]: Checked inductivity of 51302 backedges. 0 proven. 51302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:45,355 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:45,355 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [228] total 228 [2018-07-25 08:48:45,355 INFO L451 AbstractCegarLoop]: Interpolant automaton has 229 states [2018-07-25 08:48:45,358 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 229 interpolants. [2018-07-25 08:48:45,360 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26106, Invalid=26106, Unknown=0, NotChecked=0, Total=52212 [2018-07-25 08:48:45,360 INFO L87 Difference]: Start difference. First operand 457 states and 457 transitions. Second operand 229 states. [2018-07-25 08:48:47,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:47,778 INFO L93 Difference]: Finished difference Result 461 states and 461 transitions. [2018-07-25 08:48:47,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 229 states. [2018-07-25 08:48:47,779 INFO L78 Accepts]: Start accepts. Automaton has 229 states. Word has length 456 [2018-07-25 08:48:47,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:47,779 INFO L225 Difference]: With dead ends: 461 [2018-07-25 08:48:47,779 INFO L226 Difference]: Without dead ends: 459 [2018-07-25 08:48:47,781 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=26106, Invalid=26106, Unknown=0, NotChecked=0, Total=52212 [2018-07-25 08:48:47,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2018-07-25 08:48:47,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 459. [2018-07-25 08:48:47,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2018-07-25 08:48:47,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 459 transitions. [2018-07-25 08:48:47,785 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 459 transitions. Word has length 456 [2018-07-25 08:48:47,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:47,785 INFO L472 AbstractCegarLoop]: Abstraction has 459 states and 459 transitions. [2018-07-25 08:48:47,785 INFO L473 AbstractCegarLoop]: Interpolant automaton has 229 states. [2018-07-25 08:48:47,785 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 459 transitions. [2018-07-25 08:48:47,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2018-07-25 08:48:47,787 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:47,787 INFO L354 BasicCegarLoop]: trace histogram [228, 227, 1, 1, 1] [2018-07-25 08:48:47,787 INFO L415 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:47,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1944311861, now seen corresponding path program 227 times [2018-07-25 08:48:47,787 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:48,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:49,384 INFO L134 CoverageAnalysis]: Checked inductivity of 51756 backedges. 0 proven. 51756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:49,384 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:49,385 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [229] total 229 [2018-07-25 08:48:49,385 INFO L451 AbstractCegarLoop]: Interpolant automaton has 230 states [2018-07-25 08:48:49,389 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 230 interpolants. [2018-07-25 08:48:49,392 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26335, Invalid=26335, Unknown=0, NotChecked=0, Total=52670 [2018-07-25 08:48:49,392 INFO L87 Difference]: Start difference. First operand 459 states and 459 transitions. Second operand 230 states. [2018-07-25 08:48:52,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:52,385 INFO L93 Difference]: Finished difference Result 463 states and 463 transitions. [2018-07-25 08:48:52,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 230 states. [2018-07-25 08:48:52,385 INFO L78 Accepts]: Start accepts. Automaton has 230 states. Word has length 458 [2018-07-25 08:48:52,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:52,386 INFO L225 Difference]: With dead ends: 463 [2018-07-25 08:48:52,386 INFO L226 Difference]: Without dead ends: 461 [2018-07-25 08:48:52,390 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=26335, Invalid=26335, Unknown=0, NotChecked=0, Total=52670 [2018-07-25 08:48:52,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2018-07-25 08:48:52,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 461. [2018-07-25 08:48:52,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2018-07-25 08:48:52,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 461 transitions. [2018-07-25 08:48:52,395 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 461 transitions. Word has length 458 [2018-07-25 08:48:52,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:52,396 INFO L472 AbstractCegarLoop]: Abstraction has 461 states and 461 transitions. [2018-07-25 08:48:52,396 INFO L473 AbstractCegarLoop]: Interpolant automaton has 230 states. [2018-07-25 08:48:52,396 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 461 transitions. [2018-07-25 08:48:52,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2018-07-25 08:48:52,398 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:52,398 INFO L354 BasicCegarLoop]: trace histogram [229, 228, 1, 1, 1] [2018-07-25 08:48:52,398 INFO L415 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:52,399 INFO L82 PathProgramCache]: Analyzing trace with hash 172976751, now seen corresponding path program 228 times [2018-07-25 08:48:52,399 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:52,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:54,029 INFO L134 CoverageAnalysis]: Checked inductivity of 52212 backedges. 0 proven. 52212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:54,029 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:54,029 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [230] total 230 [2018-07-25 08:48:54,029 INFO L451 AbstractCegarLoop]: Interpolant automaton has 231 states [2018-07-25 08:48:54,033 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 231 interpolants. [2018-07-25 08:48:54,035 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26565, Invalid=26565, Unknown=0, NotChecked=0, Total=53130 [2018-07-25 08:48:54,036 INFO L87 Difference]: Start difference. First operand 461 states and 461 transitions. Second operand 231 states. [2018-07-25 08:48:58,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:58,150 INFO L93 Difference]: Finished difference Result 465 states and 465 transitions. [2018-07-25 08:48:58,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 231 states. [2018-07-25 08:48:58,150 INFO L78 Accepts]: Start accepts. Automaton has 231 states. Word has length 460 [2018-07-25 08:48:58,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:58,151 INFO L225 Difference]: With dead ends: 465 [2018-07-25 08:48:58,151 INFO L226 Difference]: Without dead ends: 463 [2018-07-25 08:48:58,156 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=26565, Invalid=26565, Unknown=0, NotChecked=0, Total=53130 [2018-07-25 08:48:58,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2018-07-25 08:48:58,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 463. [2018-07-25 08:48:58,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 463 states. [2018-07-25 08:48:58,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 463 transitions. [2018-07-25 08:48:58,161 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 463 transitions. Word has length 460 [2018-07-25 08:48:58,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:58,162 INFO L472 AbstractCegarLoop]: Abstraction has 463 states and 463 transitions. [2018-07-25 08:48:58,162 INFO L473 AbstractCegarLoop]: Interpolant automaton has 231 states. [2018-07-25 08:48:58,162 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 463 transitions. [2018-07-25 08:48:58,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2018-07-25 08:48:58,163 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:58,164 INFO L354 BasicCegarLoop]: trace histogram [230, 229, 1, 1, 1] [2018-07-25 08:48:58,164 INFO L415 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:58,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1273014743, now seen corresponding path program 229 times [2018-07-25 08:48:58,164 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:58,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:00,018 INFO L134 CoverageAnalysis]: Checked inductivity of 52670 backedges. 0 proven. 52670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:00,018 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:00,019 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [231] total 231 [2018-07-25 08:49:00,019 INFO L451 AbstractCegarLoop]: Interpolant automaton has 232 states [2018-07-25 08:49:00,022 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 232 interpolants. [2018-07-25 08:49:00,024 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26796, Invalid=26796, Unknown=0, NotChecked=0, Total=53592 [2018-07-25 08:49:00,024 INFO L87 Difference]: Start difference. First operand 463 states and 463 transitions. Second operand 232 states. Received shutdown request... [2018-07-25 08:49:00,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-07-25 08:49:00,477 WARN L541 AbstractCegarLoop]: Verification canceled [2018-07-25 08:49:00,484 WARN L202 ceAbstractionStarter]: Timeout [2018-07-25 08:49:00,484 INFO L202 PluginConnector]: Adding new model count_by_1.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 08:49:00 BoogieIcfgContainer [2018-07-25 08:49:00,484 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 08:49:00,485 INFO L168 Benchmark]: Toolchain (without parser) took 259929.16 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: -966.3 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-07-25 08:49:00,487 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.32 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 08:49:00,487 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.44 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 08:49:00,487 INFO L168 Benchmark]: Boogie Preprocessor took 25.23 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 08:49:00,488 INFO L168 Benchmark]: RCFGBuilder took 201.08 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 08:49:00,488 INFO L168 Benchmark]: TraceAbstraction took 259654.83 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: -976.9 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-07-25 08:49:00,490 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 0.32 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 43.44 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 25.23 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 201.08 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 259654.83 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: -976.9 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 34]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 34). Cancelled while BasicCegarLoop was constructing difference of abstraction (463states) and interpolant automaton (currently 128 states, 232 states before enhancement), while ReachableStatesComputation was computing reachable states (251 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. TIMEOUT Result, 259.5s OverallTime, 230 OverallIterations, 230 TraceHistogramMax, 125.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 918 SDtfs, 0 SDslu, 38115 SDs, 0 SdLazy, 38345 SolverSat, 490 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26795 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 26565 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 93.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=463occurred in iteration=229, 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: 1.0s AutomataMinimizationTime, 229 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 17.8s SatisfiabilityAnalysisTime, 103.3s InterpolantComputationTime, 53590 NumberOfCodeBlocks, 53590 NumberOfCodeBlocksAsserted, 230 NumberOfCheckSat, 53360 ConstructedInterpolants, 0 QuantifiedInterpolants, 49198610 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 230 InterpolantComputations, 1 PerfectInterpolantSequences, 0/4055590 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/count_by_1.i_3.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_08-49-00-500.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/count_by_1.i_3.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_08-49-00-500.csv Completed graceful shutdown