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/toy/tooDifficultLoopInvariant/MonadicInvariant01.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 08:54:23,183 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 08:54:23,185 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 08:54:23,198 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 08:54:23,199 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 08:54:23,200 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 08:54:23,201 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 08:54:23,203 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 08:54:23,205 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 08:54:23,206 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 08:54:23,207 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 08:54:23,207 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 08:54:23,208 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 08:54:23,209 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 08:54:23,210 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 08:54:23,211 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 08:54:23,212 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 08:54:23,214 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 08:54:23,216 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 08:54:23,218 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 08:54:23,220 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 08:54:23,221 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 08:54:23,224 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-25 08:54:23,234 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-07-25 08:54:23,249 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 08:54:23,249 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 08:54:23,251 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 08:54:23,251 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 08:54:23,251 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 08:54:23,251 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-25 08:54:23,251 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 08:54:23,252 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 08:54:23,298 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 08:54:23,312 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 08:54:23,317 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 08:54:23,319 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 08:54:23,319 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 08:54:23,320 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/MonadicInvariant01.bpl [2018-07-25 08:54:23,321 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/MonadicInvariant01.bpl' [2018-07-25 08:54:23,371 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 08:54:23,373 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 08:54:23,374 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 08:54:23,374 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 08:54:23,374 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 08:54:23,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:54:23" (1/1) ... [2018-07-25 08:54:23,412 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:54:23" (1/1) ... [2018-07-25 08:54:23,417 WARN L165 Inliner]: Program contained no entry procedure! [2018-07-25 08:54:23,417 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-07-25 08:54:23,417 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-07-25 08:54:23,420 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 08:54:23,420 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 08:54:23,421 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 08:54:23,421 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 08:54:23,432 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:54:23" (1/1) ... [2018-07-25 08:54:23,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:54:23" (1/1) ... [2018-07-25 08:54:23,433 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:54:23" (1/1) ... [2018-07-25 08:54:23,433 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:54:23" (1/1) ... [2018-07-25 08:54:23,436 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:54:23" (1/1) ... [2018-07-25 08:54:23,441 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:54:23" (1/1) ... [2018-07-25 08:54:23,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:54:23" (1/1) ... [2018-07-25 08:54:23,443 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 08:54:23,444 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 08:54:23,444 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 08:54:23,444 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 08:54:23,446 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:54:23" (1/1) ... [2018-07-25 08:54:23,539 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2018-07-25 08:54:23,539 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-25 08:54:23,539 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-25 08:54:23,668 INFO L270 CfgBuilder]: Using library mode [2018-07-25 08:54:23,669 INFO L202 PluginConnector]: Adding new model MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:54:23 BoogieIcfgContainer [2018-07-25 08:54:23,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 08:54:23,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 08:54:23,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 08:54:23,674 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 08:54:23,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:54:23" (1/2) ... [2018-07-25 08:54:23,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a136a7e and model type MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 08:54:23, skipping insertion in model container [2018-07-25 08:54:23,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:54:23" (2/2) ... [2018-07-25 08:54:23,679 INFO L112 eAbstractionObserver]: Analyzing ICFG MonadicInvariant01.bpl [2018-07-25 08:54:23,689 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-25 08:54:23,697 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 08:54:23,745 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 08:54:23,746 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 08:54:23,746 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 08:54:23,746 INFO L376 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-25 08:54:23,746 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 08:54:23,747 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 08:54:23,747 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 08:54:23,747 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 08:54:23,748 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 08:54:23,763 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2018-07-25 08:54:23,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-07-25 08:54:23,771 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:23,772 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-07-25 08:54:23,773 INFO L415 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:23,777 INFO L82 PathProgramCache]: Analyzing trace with hash 29920, now seen corresponding path program 1 times [2018-07-25 08:54:23,783 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:23,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:23,856 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 08:54:23,859 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:54:23,859 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-07-25 08:54:23,863 INFO L451 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-25 08:54:23,875 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-25 08:54:23,876 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-25 08:54:23,878 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 3 states. [2018-07-25 08:54:23,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:23,908 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-07-25 08:54:23,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-25 08:54:23,910 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-07-25 08:54:23,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:23,921 INFO L225 Difference]: With dead ends: 9 [2018-07-25 08:54:23,921 INFO L226 Difference]: Without dead ends: 6 [2018-07-25 08:54:23,924 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 08:54:23,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-07-25 08:54:23,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-07-25 08:54:23,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-07-25 08:54:23,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-07-25 08:54:23,966 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 3 [2018-07-25 08:54:23,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:23,966 INFO L472 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-07-25 08:54:23,966 INFO L473 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-25 08:54:23,967 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-07-25 08:54:23,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-07-25 08:54:23,967 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:23,967 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-07-25 08:54:23,968 INFO L415 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:23,968 INFO L82 PathProgramCache]: Analyzing trace with hash 28754210, now seen corresponding path program 1 times [2018-07-25 08:54:23,969 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:23,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:24,001 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 08:54:24,002 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:24,002 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2018-07-25 08:54:24,005 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 08:54:24,005 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 08:54:24,005 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:54:24,006 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 4 states. [2018-07-25 08:54:24,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:24,045 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-07-25 08:54:24,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 08:54:24,049 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2018-07-25 08:54:24,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:24,050 INFO L225 Difference]: With dead ends: 9 [2018-07-25 08:54:24,050 INFO L226 Difference]: Without dead ends: 8 [2018-07-25 08:54:24,053 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 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 08:54:24,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-07-25 08:54:24,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-07-25 08:54:24,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-07-25 08:54:24,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-07-25 08:54:24,058 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 5 [2018-07-25 08:54:24,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:24,059 INFO L472 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-07-25 08:54:24,059 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 08:54:24,059 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-07-25 08:54:24,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-25 08:54:24,061 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:24,061 INFO L354 BasicCegarLoop]: trace histogram [3, 2, 1, 1] [2018-07-25 08:54:24,061 INFO L415 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:24,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1862993124, now seen corresponding path program 2 times [2018-07-25 08:54:24,062 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:24,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:24,107 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 08:54:24,107 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:24,107 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-25 08:54:24,108 INFO L451 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-25 08:54:24,108 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-25 08:54:24,108 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:54:24,109 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 5 states. [2018-07-25 08:54:24,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:24,140 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-07-25 08:54:24,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-25 08:54:24,141 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2018-07-25 08:54:24,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:24,141 INFO L225 Difference]: With dead ends: 11 [2018-07-25 08:54:24,142 INFO L226 Difference]: Without dead ends: 10 [2018-07-25 08:54:24,142 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 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 08:54:24,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-07-25 08:54:24,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-07-25 08:54:24,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-07-25 08:54:24,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-07-25 08:54:24,146 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2018-07-25 08:54:24,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:24,147 INFO L472 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-07-25 08:54:24,147 INFO L473 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-25 08:54:24,147 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-07-25 08:54:24,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-07-25 08:54:24,148 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:24,148 INFO L354 BasicCegarLoop]: trace histogram [4, 3, 1, 1] [2018-07-25 08:54:24,148 INFO L415 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:24,149 INFO L82 PathProgramCache]: Analyzing trace with hash -664969178, now seen corresponding path program 3 times [2018-07-25 08:54:24,149 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:24,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:24,187 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 08:54:24,187 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:24,188 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-25 08:54:24,188 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 08:54:24,188 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 08:54:24,189 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:54:24,189 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 6 states. [2018-07-25 08:54:24,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:24,216 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-07-25 08:54:24,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 08:54:24,217 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2018-07-25 08:54:24,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:24,218 INFO L225 Difference]: With dead ends: 13 [2018-07-25 08:54:24,218 INFO L226 Difference]: Without dead ends: 12 [2018-07-25 08:54:24,219 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 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 08:54:24,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-07-25 08:54:24,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-07-25 08:54:24,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-07-25 08:54:24,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-07-25 08:54:24,224 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2018-07-25 08:54:24,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:24,225 INFO L472 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-07-25 08:54:24,225 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 08:54:24,225 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-07-25 08:54:24,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-07-25 08:54:24,226 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:24,226 INFO L354 BasicCegarLoop]: trace histogram [5, 4, 1, 1] [2018-07-25 08:54:24,227 INFO L415 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:24,228 INFO L82 PathProgramCache]: Analyzing trace with hash 914748136, now seen corresponding path program 4 times [2018-07-25 08:54:24,228 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:24,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:24,316 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 08:54:24,316 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:24,316 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 08:54:24,317 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 08:54:24,317 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 08:54:24,317 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:54:24,318 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 7 states. [2018-07-25 08:54:24,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:24,342 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-07-25 08:54:24,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-25 08:54:24,343 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2018-07-25 08:54:24,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:24,343 INFO L225 Difference]: With dead ends: 15 [2018-07-25 08:54:24,344 INFO L226 Difference]: Without dead ends: 14 [2018-07-25 08:54:24,344 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 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 08:54:24,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-07-25 08:54:24,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-07-25 08:54:24,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-07-25 08:54:24,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-07-25 08:54:24,354 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-07-25 08:54:24,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:24,355 INFO L472 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-07-25 08:54:24,355 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 08:54:24,355 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-07-25 08:54:24,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-07-25 08:54:24,356 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:24,356 INFO L354 BasicCegarLoop]: trace histogram [6, 5, 1, 1] [2018-07-25 08:54:24,356 INFO L415 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:24,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1395335894, now seen corresponding path program 5 times [2018-07-25 08:54:24,357 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:24,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:24,406 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 08:54:24,407 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:24,407 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 08:54:24,407 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:54:24,408 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:54:24,408 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:54:24,409 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 8 states. [2018-07-25 08:54:24,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:24,448 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-07-25 08:54:24,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-25 08:54:24,449 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2018-07-25 08:54:24,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:24,450 INFO L225 Difference]: With dead ends: 17 [2018-07-25 08:54:24,450 INFO L226 Difference]: Without dead ends: 16 [2018-07-25 08:54:24,451 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 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 08:54:24,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-07-25 08:54:24,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-07-25 08:54:24,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-07-25 08:54:24,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-07-25 08:54:24,457 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2018-07-25 08:54:24,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:24,457 INFO L472 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-07-25 08:54:24,457 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:54:24,457 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-07-25 08:54:24,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-07-25 08:54:24,458 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:24,458 INFO L354 BasicCegarLoop]: trace histogram [7, 6, 1, 1] [2018-07-25 08:54:24,459 INFO L415 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:24,459 INFO L82 PathProgramCache]: Analyzing trace with hash -887996692, now seen corresponding path program 6 times [2018-07-25 08:54:24,459 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:24,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:24,534 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 08:54:24,537 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:24,537 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:54:24,537 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:54:24,538 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:54:24,538 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:54:24,539 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 9 states. [2018-07-25 08:54:24,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:24,574 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-07-25 08:54:24,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-25 08:54:24,575 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-07-25 08:54:24,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:24,576 INFO L225 Difference]: With dead ends: 19 [2018-07-25 08:54:24,576 INFO L226 Difference]: Without dead ends: 18 [2018-07-25 08:54:24,577 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 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 08:54:24,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-07-25 08:54:24,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-07-25 08:54:24,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-07-25 08:54:24,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-07-25 08:54:24,583 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2018-07-25 08:54:24,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:24,584 INFO L472 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-07-25 08:54:24,584 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:54:24,584 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-07-25 08:54:24,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-07-25 08:54:24,585 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:24,585 INFO L354 BasicCegarLoop]: trace histogram [8, 7, 1, 1] [2018-07-25 08:54:24,585 INFO L415 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:24,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1333671982, now seen corresponding path program 7 times [2018-07-25 08:54:24,586 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:24,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:24,641 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 08:54:24,641 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:24,641 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:54:24,642 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 08:54:24,642 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 08:54:24,643 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:54:24,643 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 10 states. [2018-07-25 08:54:24,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:24,670 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-07-25 08:54:24,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-25 08:54:24,671 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-07-25 08:54:24,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:24,672 INFO L225 Difference]: With dead ends: 21 [2018-07-25 08:54:24,672 INFO L226 Difference]: Without dead ends: 20 [2018-07-25 08:54:24,673 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 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 08:54:24,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-07-25 08:54:24,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-07-25 08:54:24,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-07-25 08:54:24,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-07-25 08:54:24,682 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 17 [2018-07-25 08:54:24,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:24,685 INFO L472 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-07-25 08:54:24,685 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 08:54:24,685 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-07-25 08:54:24,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-07-25 08:54:24,686 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:24,686 INFO L354 BasicCegarLoop]: trace histogram [9, 8, 1, 1] [2018-07-25 08:54:24,688 INFO L415 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:24,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1758521584, now seen corresponding path program 8 times [2018-07-25 08:54:24,689 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:24,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:24,750 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 08:54:24,751 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:24,751 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:54:24,751 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:54:24,752 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:54:24,752 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:54:24,753 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 11 states. [2018-07-25 08:54:24,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:24,780 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-07-25 08:54:24,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 08:54:24,781 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-07-25 08:54:24,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:24,782 INFO L225 Difference]: With dead ends: 23 [2018-07-25 08:54:24,782 INFO L226 Difference]: Without dead ends: 22 [2018-07-25 08:54:24,783 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 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 08:54:24,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-07-25 08:54:24,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-07-25 08:54:24,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-07-25 08:54:24,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-07-25 08:54:24,789 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 19 [2018-07-25 08:54:24,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:24,790 INFO L472 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-07-25 08:54:24,790 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 08:54:24,790 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-07-25 08:54:24,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-07-25 08:54:24,791 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:24,791 INFO L354 BasicCegarLoop]: trace histogram [10, 9, 1, 1] [2018-07-25 08:54:24,792 INFO L415 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:24,792 INFO L82 PathProgramCache]: Analyzing trace with hash 2017095986, now seen corresponding path program 9 times [2018-07-25 08:54:24,792 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:24,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:24,892 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 08:54:24,893 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:24,894 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 08:54:24,894 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 08:54:24,894 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 08:54:24,895 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:54:24,897 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 12 states. [2018-07-25 08:54:24,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:24,933 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-07-25 08:54:24,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-25 08:54:24,934 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 21 [2018-07-25 08:54:24,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:24,935 INFO L225 Difference]: With dead ends: 25 [2018-07-25 08:54:24,935 INFO L226 Difference]: Without dead ends: 24 [2018-07-25 08:54:24,936 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 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 08:54:24,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-07-25 08:54:24,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-07-25 08:54:24,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-07-25 08:54:24,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-07-25 08:54:24,942 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 21 [2018-07-25 08:54:24,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:24,943 INFO L472 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-07-25 08:54:24,943 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 08:54:24,943 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-07-25 08:54:24,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-07-25 08:54:24,944 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:24,944 INFO L354 BasicCegarLoop]: trace histogram [11, 10, 1, 1] [2018-07-25 08:54:24,945 INFO L415 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:24,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1398993140, now seen corresponding path program 10 times [2018-07-25 08:54:24,945 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:24,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:24,996 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 08:54:24,997 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:24,997 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 08:54:24,998 INFO L451 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-25 08:54:24,998 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-25 08:54:24,998 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-07-25 08:54:24,999 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 13 states. [2018-07-25 08:54:25,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:25,022 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-07-25 08:54:25,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 08:54:25,022 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 23 [2018-07-25 08:54:25,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:25,024 INFO L225 Difference]: With dead ends: 27 [2018-07-25 08:54:25,024 INFO L226 Difference]: Without dead ends: 26 [2018-07-25 08:54:25,025 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 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 08:54:25,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-07-25 08:54:25,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-07-25 08:54:25,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-07-25 08:54:25,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-07-25 08:54:25,031 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 23 [2018-07-25 08:54:25,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:25,032 INFO L472 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-07-25 08:54:25,032 INFO L473 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-25 08:54:25,032 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-07-25 08:54:25,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 08:54:25,033 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:25,033 INFO L354 BasicCegarLoop]: trace histogram [12, 11, 1, 1] [2018-07-25 08:54:25,034 INFO L415 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:25,034 INFO L82 PathProgramCache]: Analyzing trace with hash 107644982, now seen corresponding path program 11 times [2018-07-25 08:54:25,034 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:25,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:25,111 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 08:54:25,112 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:25,112 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-07-25 08:54:25,115 INFO L451 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-25 08:54:25,115 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-25 08:54:25,116 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:54:25,116 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 14 states. [2018-07-25 08:54:25,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:25,166 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-07-25 08:54:25,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-25 08:54:25,167 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 25 [2018-07-25 08:54:25,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:25,168 INFO L225 Difference]: With dead ends: 29 [2018-07-25 08:54:25,168 INFO L226 Difference]: Without dead ends: 28 [2018-07-25 08:54:25,171 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 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 08:54:25,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-07-25 08:54:25,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-07-25 08:54:25,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-07-25 08:54:25,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-07-25 08:54:25,178 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 25 [2018-07-25 08:54:25,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:25,179 INFO L472 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-07-25 08:54:25,179 INFO L473 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-25 08:54:25,179 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-07-25 08:54:25,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-07-25 08:54:25,180 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:25,180 INFO L354 BasicCegarLoop]: trace histogram [13, 12, 1, 1] [2018-07-25 08:54:25,181 INFO L415 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:25,181 INFO L82 PathProgramCache]: Analyzing trace with hash 367613688, now seen corresponding path program 12 times [2018-07-25 08:54:25,182 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:25,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:25,240 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 08:54:25,241 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:25,241 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-07-25 08:54:25,241 INFO L451 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-25 08:54:25,242 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-25 08:54:25,242 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-07-25 08:54:25,244 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 15 states. [2018-07-25 08:54:25,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:25,285 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-07-25 08:54:25,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-25 08:54:25,286 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 27 [2018-07-25 08:54:25,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:25,287 INFO L225 Difference]: With dead ends: 31 [2018-07-25 08:54:25,287 INFO L226 Difference]: Without dead ends: 30 [2018-07-25 08:54:25,288 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 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 08:54:25,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-07-25 08:54:25,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-07-25 08:54:25,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-07-25 08:54:25,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-07-25 08:54:25,303 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 27 [2018-07-25 08:54:25,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:25,304 INFO L472 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-07-25 08:54:25,304 INFO L473 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-25 08:54:25,304 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-07-25 08:54:25,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-25 08:54:25,305 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:25,305 INFO L354 BasicCegarLoop]: trace histogram [14, 13, 1, 1] [2018-07-25 08:54:25,309 INFO L415 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:25,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1089436986, now seen corresponding path program 13 times [2018-07-25 08:54:25,310 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:25,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:25,383 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 08:54:25,386 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:25,386 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-07-25 08:54:25,387 INFO L451 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-25 08:54:25,387 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-25 08:54:25,388 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-07-25 08:54:25,388 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 16 states. [2018-07-25 08:54:25,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:25,432 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-07-25 08:54:25,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 08:54:25,433 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2018-07-25 08:54:25,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:25,434 INFO L225 Difference]: With dead ends: 33 [2018-07-25 08:54:25,434 INFO L226 Difference]: Without dead ends: 32 [2018-07-25 08:54:25,435 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 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 08:54:25,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-07-25 08:54:25,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-07-25 08:54:25,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-07-25 08:54:25,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-07-25 08:54:25,446 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 29 [2018-07-25 08:54:25,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:25,448 INFO L472 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-07-25 08:54:25,448 INFO L473 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-25 08:54:25,448 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-07-25 08:54:25,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-07-25 08:54:25,449 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:25,449 INFO L354 BasicCegarLoop]: trace histogram [15, 14, 1, 1] [2018-07-25 08:54:25,450 INFO L415 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:25,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1023075588, now seen corresponding path program 14 times [2018-07-25 08:54:25,450 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:25,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:25,540 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 08:54:25,540 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:25,541 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-25 08:54:25,541 INFO L451 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-25 08:54:25,542 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-25 08:54:25,542 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-07-25 08:54:25,542 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 17 states. [2018-07-25 08:54:25,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:25,587 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-07-25 08:54:25,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-25 08:54:25,587 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 31 [2018-07-25 08:54:25,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:25,590 INFO L225 Difference]: With dead ends: 35 [2018-07-25 08:54:25,591 INFO L226 Difference]: Without dead ends: 34 [2018-07-25 08:54:25,592 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 0 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 08:54:25,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-07-25 08:54:25,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-07-25 08:54:25,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-07-25 08:54:25,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-07-25 08:54:25,603 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 31 [2018-07-25 08:54:25,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:25,603 INFO L472 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2018-07-25 08:54:25,603 INFO L473 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-25 08:54:25,604 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-07-25 08:54:25,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-07-25 08:54:25,605 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:25,605 INFO L354 BasicCegarLoop]: trace histogram [16, 15, 1, 1] [2018-07-25 08:54:25,605 INFO L415 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:25,606 INFO L82 PathProgramCache]: Analyzing trace with hash 371871806, now seen corresponding path program 15 times [2018-07-25 08:54:25,606 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:25,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:25,716 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 08:54:25,717 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:25,717 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-07-25 08:54:25,718 INFO L451 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-25 08:54:25,718 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-25 08:54:25,720 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-07-25 08:54:25,721 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 18 states. [2018-07-25 08:54:25,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:25,749 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-07-25 08:54:25,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 08:54:25,749 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 33 [2018-07-25 08:54:25,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:25,751 INFO L225 Difference]: With dead ends: 37 [2018-07-25 08:54:25,751 INFO L226 Difference]: Without dead ends: 36 [2018-07-25 08:54:25,752 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 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 08:54:25,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-07-25 08:54:25,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-07-25 08:54:25,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-07-25 08:54:25,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-07-25 08:54:25,763 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 33 [2018-07-25 08:54:25,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:25,764 INFO L472 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-07-25 08:54:25,764 INFO L473 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-25 08:54:25,764 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-07-25 08:54:25,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-07-25 08:54:25,766 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:25,766 INFO L354 BasicCegarLoop]: trace histogram [17, 16, 1, 1] [2018-07-25 08:54:25,766 INFO L415 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:25,767 INFO L82 PathProgramCache]: Analyzing trace with hash 886521088, now seen corresponding path program 16 times [2018-07-25 08:54:25,767 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:25,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:25,860 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:25,860 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:25,861 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-07-25 08:54:25,861 INFO L451 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-25 08:54:25,863 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-25 08:54:25,863 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-07-25 08:54:25,863 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 19 states. [2018-07-25 08:54:25,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:25,894 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-07-25 08:54:25,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-25 08:54:25,895 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 35 [2018-07-25 08:54:25,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:25,896 INFO L225 Difference]: With dead ends: 39 [2018-07-25 08:54:25,896 INFO L226 Difference]: Without dead ends: 38 [2018-07-25 08:54:25,898 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 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 08:54:25,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-07-25 08:54:25,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-07-25 08:54:25,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-07-25 08:54:25,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2018-07-25 08:54:25,907 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 35 [2018-07-25 08:54:25,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:25,907 INFO L472 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2018-07-25 08:54:25,908 INFO L473 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-25 08:54:25,908 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2018-07-25 08:54:25,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-07-25 08:54:25,909 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:25,909 INFO L354 BasicCegarLoop]: trace histogram [18, 17, 1, 1] [2018-07-25 08:54:25,909 INFO L415 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:25,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1543242050, now seen corresponding path program 17 times [2018-07-25 08:54:25,912 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:25,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:26,013 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 08:54:26,013 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:26,014 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-07-25 08:54:26,014 INFO L451 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-25 08:54:26,020 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-25 08:54:26,022 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:54:26,023 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 20 states. [2018-07-25 08:54:26,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:26,063 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-07-25 08:54:26,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 08:54:26,064 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 37 [2018-07-25 08:54:26,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:26,065 INFO L225 Difference]: With dead ends: 41 [2018-07-25 08:54:26,065 INFO L226 Difference]: Without dead ends: 40 [2018-07-25 08:54:26,066 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 0 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 08:54:26,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-07-25 08:54:26,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-07-25 08:54:26,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-07-25 08:54:26,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2018-07-25 08:54:26,079 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 37 [2018-07-25 08:54:26,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:26,080 INFO L472 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2018-07-25 08:54:26,080 INFO L473 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-25 08:54:26,080 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2018-07-25 08:54:26,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-07-25 08:54:26,081 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:26,081 INFO L354 BasicCegarLoop]: trace histogram [19, 18, 1, 1] [2018-07-25 08:54:26,081 INFO L415 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:26,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1291894020, now seen corresponding path program 18 times [2018-07-25 08:54:26,082 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:26,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:26,203 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 08:54:26,204 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:26,204 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-25 08:54:26,205 INFO L451 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-07-25 08:54:26,205 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-07-25 08:54:26,207 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-07-25 08:54:26,208 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 21 states. [2018-07-25 08:54:26,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:26,237 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-07-25 08:54:26,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-25 08:54:26,238 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 39 [2018-07-25 08:54:26,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:26,239 INFO L225 Difference]: With dead ends: 43 [2018-07-25 08:54:26,240 INFO L226 Difference]: Without dead ends: 42 [2018-07-25 08:54:26,240 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 0 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 08:54:26,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-07-25 08:54:26,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-07-25 08:54:26,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-07-25 08:54:26,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2018-07-25 08:54:26,247 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 39 [2018-07-25 08:54:26,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:26,248 INFO L472 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2018-07-25 08:54:26,248 INFO L473 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-07-25 08:54:26,248 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2018-07-25 08:54:26,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-07-25 08:54:26,249 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:26,249 INFO L354 BasicCegarLoop]: trace histogram [20, 19, 1, 1] [2018-07-25 08:54:26,250 INFO L415 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:26,251 INFO L82 PathProgramCache]: Analyzing trace with hash 264605766, now seen corresponding path program 19 times [2018-07-25 08:54:26,251 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:26,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:26,366 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 08:54:26,367 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:26,367 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-07-25 08:54:26,367 INFO L451 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-25 08:54:26,368 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-25 08:54:26,368 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:54:26,369 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 22 states. [2018-07-25 08:54:26,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:26,400 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-07-25 08:54:26,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 08:54:26,401 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 41 [2018-07-25 08:54:26,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:26,401 INFO L225 Difference]: With dead ends: 45 [2018-07-25 08:54:26,402 INFO L226 Difference]: Without dead ends: 44 [2018-07-25 08:54:26,402 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 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 08:54:26,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-07-25 08:54:26,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-07-25 08:54:26,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-07-25 08:54:26,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2018-07-25 08:54:26,411 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 41 [2018-07-25 08:54:26,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:26,411 INFO L472 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2018-07-25 08:54:26,411 INFO L473 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-25 08:54:26,412 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2018-07-25 08:54:26,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-07-25 08:54:26,415 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:26,415 INFO L354 BasicCegarLoop]: trace histogram [21, 20, 1, 1] [2018-07-25 08:54:26,416 INFO L415 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:26,416 INFO L82 PathProgramCache]: Analyzing trace with hash 883071752, now seen corresponding path program 20 times [2018-07-25 08:54:26,416 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:26,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:26,533 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 08:54:26,533 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:26,534 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-07-25 08:54:26,534 INFO L451 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-07-25 08:54:26,534 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-07-25 08:54:26,535 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-07-25 08:54:26,535 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 23 states. [2018-07-25 08:54:26,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:26,567 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-07-25 08:54:26,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-25 08:54:26,568 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 43 [2018-07-25 08:54:26,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:26,568 INFO L225 Difference]: With dead ends: 47 [2018-07-25 08:54:26,569 INFO L226 Difference]: Without dead ends: 46 [2018-07-25 08:54:26,569 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 0 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 08:54:26,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-07-25 08:54:26,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-07-25 08:54:26,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-07-25 08:54:26,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2018-07-25 08:54:26,583 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 43 [2018-07-25 08:54:26,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:26,584 INFO L472 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2018-07-25 08:54:26,584 INFO L473 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-07-25 08:54:26,584 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2018-07-25 08:54:26,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-07-25 08:54:26,586 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:26,586 INFO L354 BasicCegarLoop]: trace histogram [22, 21, 1, 1] [2018-07-25 08:54:26,586 INFO L415 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:26,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1771569846, now seen corresponding path program 21 times [2018-07-25 08:54:26,592 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:26,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:26,715 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 08:54:26,716 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:26,716 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-07-25 08:54:26,716 INFO L451 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-25 08:54:26,717 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-25 08:54:26,717 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:54:26,718 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 24 states. [2018-07-25 08:54:26,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:26,751 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-07-25 08:54:26,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-25 08:54:26,751 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 45 [2018-07-25 08:54:26,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:26,752 INFO L225 Difference]: With dead ends: 49 [2018-07-25 08:54:26,752 INFO L226 Difference]: Without dead ends: 48 [2018-07-25 08:54:26,755 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 0 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 08:54:26,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-07-25 08:54:26,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-07-25 08:54:26,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-07-25 08:54:26,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2018-07-25 08:54:26,760 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 45 [2018-07-25 08:54:26,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:26,760 INFO L472 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2018-07-25 08:54:26,760 INFO L473 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-25 08:54:26,761 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2018-07-25 08:54:26,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-07-25 08:54:26,761 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:26,761 INFO L354 BasicCegarLoop]: trace histogram [23, 22, 1, 1] [2018-07-25 08:54:26,762 INFO L415 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:26,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1671571700, now seen corresponding path program 22 times [2018-07-25 08:54:26,762 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:26,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:26,897 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 08:54:26,897 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:26,897 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-25 08:54:26,898 INFO L451 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-07-25 08:54:26,898 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-07-25 08:54:26,899 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:54:26,899 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 25 states. [2018-07-25 08:54:26,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:26,928 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-07-25 08:54:26,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-07-25 08:54:26,929 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 47 [2018-07-25 08:54:26,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:26,930 INFO L225 Difference]: With dead ends: 51 [2018-07-25 08:54:26,930 INFO L226 Difference]: Without dead ends: 50 [2018-07-25 08:54:26,931 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 0 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 08:54:26,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-07-25 08:54:26,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-07-25 08:54:26,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-07-25 08:54:26,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2018-07-25 08:54:26,936 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 47 [2018-07-25 08:54:26,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:26,936 INFO L472 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2018-07-25 08:54:26,936 INFO L473 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-07-25 08:54:26,936 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2018-07-25 08:54:26,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-07-25 08:54:26,937 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:26,941 INFO L354 BasicCegarLoop]: trace histogram [24, 23, 1, 1] [2018-07-25 08:54:26,942 INFO L415 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:26,942 INFO L82 PathProgramCache]: Analyzing trace with hash -62633906, now seen corresponding path program 23 times [2018-07-25 08:54:26,942 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:26,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:27,087 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 08:54:27,088 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:27,088 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-07-25 08:54:27,088 INFO L451 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-25 08:54:27,090 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-25 08:54:27,091 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:54:27,091 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 26 states. [2018-07-25 08:54:27,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:27,118 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-07-25 08:54:27,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-25 08:54:27,118 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 49 [2018-07-25 08:54:27,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:27,119 INFO L225 Difference]: With dead ends: 53 [2018-07-25 08:54:27,119 INFO L226 Difference]: Without dead ends: 52 [2018-07-25 08:54:27,120 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:54:27,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-07-25 08:54:27,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-07-25 08:54:27,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-07-25 08:54:27,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2018-07-25 08:54:27,131 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 49 [2018-07-25 08:54:27,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:27,131 INFO L472 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2018-07-25 08:54:27,131 INFO L473 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-07-25 08:54:27,131 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2018-07-25 08:54:27,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-07-25 08:54:27,132 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:27,132 INFO L354 BasicCegarLoop]: trace histogram [25, 24, 1, 1] [2018-07-25 08:54:27,132 INFO L415 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:27,133 INFO L82 PathProgramCache]: Analyzing trace with hash -61640432, now seen corresponding path program 24 times [2018-07-25 08:54:27,133 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:27,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:27,273 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 08:54:27,273 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:27,274 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-07-25 08:54:27,274 INFO L451 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-07-25 08:54:27,275 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-07-25 08:54:27,276 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-07-25 08:54:27,276 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 27 states. [2018-07-25 08:54:27,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:27,308 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-07-25 08:54:27,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-07-25 08:54:27,308 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 51 [2018-07-25 08:54:27,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:27,309 INFO L225 Difference]: With dead ends: 55 [2018-07-25 08:54:27,309 INFO L226 Difference]: Without dead ends: 54 [2018-07-25 08:54:27,310 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 0 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 08:54:27,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-07-25 08:54:27,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-07-25 08:54:27,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-07-25 08:54:27,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2018-07-25 08:54:27,317 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 51 [2018-07-25 08:54:27,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:27,317 INFO L472 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2018-07-25 08:54:27,317 INFO L473 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-07-25 08:54:27,318 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2018-07-25 08:54:27,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-07-25 08:54:27,318 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:27,318 INFO L354 BasicCegarLoop]: trace histogram [26, 25, 1, 1] [2018-07-25 08:54:27,319 INFO L415 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:27,319 INFO L82 PathProgramCache]: Analyzing trace with hash 893088082, now seen corresponding path program 25 times [2018-07-25 08:54:27,319 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:27,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:27,477 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 08:54:27,478 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:27,478 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-07-25 08:54:27,478 INFO L451 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-25 08:54:27,479 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-25 08:54:27,479 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:54:27,480 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 28 states. [2018-07-25 08:54:27,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:27,509 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-07-25 08:54:27,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-25 08:54:27,510 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 53 [2018-07-25 08:54:27,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:27,511 INFO L225 Difference]: With dead ends: 57 [2018-07-25 08:54:27,511 INFO L226 Difference]: Without dead ends: 56 [2018-07-25 08:54:27,512 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:54:27,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-07-25 08:54:27,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-07-25 08:54:27,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-07-25 08:54:27,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2018-07-25 08:54:27,517 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 53 [2018-07-25 08:54:27,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:27,517 INFO L472 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2018-07-25 08:54:27,517 INFO L473 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-25 08:54:27,517 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2018-07-25 08:54:27,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-07-25 08:54:27,518 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:27,518 INFO L354 BasicCegarLoop]: trace histogram [27, 26, 1, 1] [2018-07-25 08:54:27,519 INFO L415 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:27,519 INFO L82 PathProgramCache]: Analyzing trace with hash -735811308, now seen corresponding path program 26 times [2018-07-25 08:54:27,519 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:27,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:27,675 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 08:54:27,675 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:27,675 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-25 08:54:27,676 INFO L451 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-07-25 08:54:27,676 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-07-25 08:54:27,677 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:54:27,677 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 29 states. [2018-07-25 08:54:27,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:27,707 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-07-25 08:54:27,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-25 08:54:27,708 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 55 [2018-07-25 08:54:27,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:27,709 INFO L225 Difference]: With dead ends: 59 [2018-07-25 08:54:27,709 INFO L226 Difference]: Without dead ends: 58 [2018-07-25 08:54:27,710 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:54:27,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-07-25 08:54:27,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-07-25 08:54:27,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-07-25 08:54:27,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2018-07-25 08:54:27,743 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 55 [2018-07-25 08:54:27,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:27,744 INFO L472 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2018-07-25 08:54:27,744 INFO L473 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-07-25 08:54:27,744 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2018-07-25 08:54:27,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-07-25 08:54:27,746 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:27,746 INFO L354 BasicCegarLoop]: trace histogram [28, 27, 1, 1] [2018-07-25 08:54:27,746 INFO L415 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:27,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1554937942, now seen corresponding path program 27 times [2018-07-25 08:54:27,749 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:27,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:27,951 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 08:54:27,952 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:27,952 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-07-25 08:54:27,952 INFO L451 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-07-25 08:54:27,953 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-07-25 08:54:27,953 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:54:27,953 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 30 states. [2018-07-25 08:54:27,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:27,989 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-07-25 08:54:27,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-25 08:54:27,989 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 57 [2018-07-25 08:54:27,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:27,990 INFO L225 Difference]: With dead ends: 61 [2018-07-25 08:54:27,990 INFO L226 Difference]: Without dead ends: 60 [2018-07-25 08:54:27,991 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:54:27,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-07-25 08:54:27,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-07-25 08:54:27,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-07-25 08:54:27,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2018-07-25 08:54:27,996 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 57 [2018-07-25 08:54:27,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:27,996 INFO L472 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2018-07-25 08:54:27,996 INFO L473 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-07-25 08:54:27,997 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2018-07-25 08:54:27,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-07-25 08:54:27,997 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:27,997 INFO L354 BasicCegarLoop]: trace histogram [29, 28, 1, 1] [2018-07-25 08:54:27,998 INFO L415 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:27,998 INFO L82 PathProgramCache]: Analyzing trace with hash -353255656, now seen corresponding path program 28 times [2018-07-25 08:54:27,998 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:28,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:28,157 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 08:54:28,157 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:28,158 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-07-25 08:54:28,158 INFO L451 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-07-25 08:54:28,158 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-07-25 08:54:28,159 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-07-25 08:54:28,159 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 31 states. [2018-07-25 08:54:28,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:28,195 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-07-25 08:54:28,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-07-25 08:54:28,196 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 59 [2018-07-25 08:54:28,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:28,197 INFO L225 Difference]: With dead ends: 63 [2018-07-25 08:54:28,197 INFO L226 Difference]: Without dead ends: 62 [2018-07-25 08:54:28,198 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-07-25 08:54:28,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-07-25 08:54:28,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-07-25 08:54:28,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-07-25 08:54:28,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2018-07-25 08:54:28,204 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 59 [2018-07-25 08:54:28,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:28,204 INFO L472 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2018-07-25 08:54:28,204 INFO L473 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-07-25 08:54:28,204 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2018-07-25 08:54:28,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-07-25 08:54:28,206 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:28,206 INFO L354 BasicCegarLoop]: trace histogram [30, 29, 1, 1] [2018-07-25 08:54:28,206 INFO L415 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:28,207 INFO L82 PathProgramCache]: Analyzing trace with hash -176267942, now seen corresponding path program 29 times [2018-07-25 08:54:28,207 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:28,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:28,368 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 08:54:28,368 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:28,369 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-07-25 08:54:28,369 INFO L451 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-25 08:54:28,369 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-25 08:54:28,370 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:54:28,370 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 32 states. [2018-07-25 08:54:28,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:28,405 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-07-25 08:54:28,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-07-25 08:54:28,405 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 61 [2018-07-25 08:54:28,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:28,406 INFO L225 Difference]: With dead ends: 65 [2018-07-25 08:54:28,406 INFO L226 Difference]: Without dead ends: 64 [2018-07-25 08:54:28,407 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 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 08:54:28,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-07-25 08:54:28,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-07-25 08:54:28,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-07-25 08:54:28,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2018-07-25 08:54:28,412 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 61 [2018-07-25 08:54:28,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:28,412 INFO L472 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2018-07-25 08:54:28,413 INFO L473 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-25 08:54:28,413 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2018-07-25 08:54:28,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-07-25 08:54:28,413 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:28,413 INFO L354 BasicCegarLoop]: trace histogram [31, 30, 1, 1] [2018-07-25 08:54:28,414 INFO L415 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:28,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1889766628, now seen corresponding path program 30 times [2018-07-25 08:54:28,414 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:28,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:28,582 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 08:54:28,582 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:28,582 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-25 08:54:28,583 INFO L451 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-07-25 08:54:28,583 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-07-25 08:54:28,584 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 08:54:28,584 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 33 states. [2018-07-25 08:54:28,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:28,617 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-07-25 08:54:28,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-25 08:54:28,618 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 63 [2018-07-25 08:54:28,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:28,619 INFO L225 Difference]: With dead ends: 67 [2018-07-25 08:54:28,619 INFO L226 Difference]: Without dead ends: 66 [2018-07-25 08:54:28,620 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 0 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 08:54:28,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-07-25 08:54:28,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-07-25 08:54:28,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-07-25 08:54:28,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2018-07-25 08:54:28,624 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 63 [2018-07-25 08:54:28,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:28,624 INFO L472 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2018-07-25 08:54:28,625 INFO L473 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-07-25 08:54:28,625 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2018-07-25 08:54:28,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-07-25 08:54:28,625 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:28,625 INFO L354 BasicCegarLoop]: trace histogram [32, 31, 1, 1] [2018-07-25 08:54:28,626 INFO L415 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:28,626 INFO L82 PathProgramCache]: Analyzing trace with hash 705437790, now seen corresponding path program 31 times [2018-07-25 08:54:28,626 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:28,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:28,802 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 08:54:28,803 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:28,803 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-07-25 08:54:28,803 INFO L451 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-07-25 08:54:28,803 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-07-25 08:54:28,804 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:54:28,804 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 34 states. [2018-07-25 08:54:28,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:28,835 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-07-25 08:54:28,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-25 08:54:28,835 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 65 [2018-07-25 08:54:28,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:28,836 INFO L225 Difference]: With dead ends: 69 [2018-07-25 08:54:28,836 INFO L226 Difference]: Without dead ends: 68 [2018-07-25 08:54:28,837 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:54:28,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-07-25 08:54:28,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-07-25 08:54:28,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-07-25 08:54:28,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2018-07-25 08:54:28,842 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 65 [2018-07-25 08:54:28,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:28,842 INFO L472 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2018-07-25 08:54:28,842 INFO L473 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-07-25 08:54:28,843 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2018-07-25 08:54:28,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-07-25 08:54:28,843 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:28,843 INFO L354 BasicCegarLoop]: trace histogram [33, 32, 1, 1] [2018-07-25 08:54:28,844 INFO L415 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:28,844 INFO L82 PathProgramCache]: Analyzing trace with hash -679115488, now seen corresponding path program 32 times [2018-07-25 08:54:28,844 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:28,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:29,010 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 08:54:29,010 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:29,010 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-07-25 08:54:29,011 INFO L451 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-07-25 08:54:29,011 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-07-25 08:54:29,012 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 08:54:29,012 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 35 states. [2018-07-25 08:54:29,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:29,050 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-07-25 08:54:29,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-07-25 08:54:29,050 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 67 [2018-07-25 08:54:29,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:29,051 INFO L225 Difference]: With dead ends: 71 [2018-07-25 08:54:29,051 INFO L226 Difference]: Without dead ends: 70 [2018-07-25 08:54:29,052 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 08:54:29,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-07-25 08:54:29,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-07-25 08:54:29,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-07-25 08:54:29,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2018-07-25 08:54:29,057 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 67 [2018-07-25 08:54:29,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:29,057 INFO L472 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2018-07-25 08:54:29,058 INFO L473 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-07-25 08:54:29,058 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2018-07-25 08:54:29,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-07-25 08:54:29,059 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:29,059 INFO L354 BasicCegarLoop]: trace histogram [34, 33, 1, 1] [2018-07-25 08:54:29,059 INFO L415 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:29,060 INFO L82 PathProgramCache]: Analyzing trace with hash 205046114, now seen corresponding path program 33 times [2018-07-25 08:54:29,060 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:29,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:29,233 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 08:54:29,234 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:29,234 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-07-25 08:54:29,234 INFO L451 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-25 08:54:29,235 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-25 08:54:29,235 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 08:54:29,236 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 36 states. [2018-07-25 08:54:29,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:29,276 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-07-25 08:54:29,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-07-25 08:54:29,277 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 69 [2018-07-25 08:54:29,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:29,277 INFO L225 Difference]: With dead ends: 73 [2018-07-25 08:54:29,278 INFO L226 Difference]: Without dead ends: 72 [2018-07-25 08:54:29,279 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 08:54:29,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-07-25 08:54:29,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-07-25 08:54:29,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-07-25 08:54:29,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2018-07-25 08:54:29,283 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 69 [2018-07-25 08:54:29,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:29,283 INFO L472 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2018-07-25 08:54:29,283 INFO L473 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-25 08:54:29,283 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2018-07-25 08:54:29,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-07-25 08:54:29,284 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:29,284 INFO L354 BasicCegarLoop]: trace histogram [35, 34, 1, 1] [2018-07-25 08:54:29,284 INFO L415 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:29,285 INFO L82 PathProgramCache]: Analyzing trace with hash -519178972, now seen corresponding path program 34 times [2018-07-25 08:54:29,285 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:29,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:29,475 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 08:54:29,476 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:29,476 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-25 08:54:29,476 INFO L451 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-07-25 08:54:29,477 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-07-25 08:54:29,478 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 08:54:29,478 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 37 states. [2018-07-25 08:54:29,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:29,514 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-07-25 08:54:29,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-07-25 08:54:29,514 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 71 [2018-07-25 08:54:29,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:29,515 INFO L225 Difference]: With dead ends: 75 [2018-07-25 08:54:29,515 INFO L226 Difference]: Without dead ends: 74 [2018-07-25 08:54:29,516 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 08:54:29,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-07-25 08:54:29,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2018-07-25 08:54:29,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-07-25 08:54:29,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2018-07-25 08:54:29,521 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 71 [2018-07-25 08:54:29,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:29,521 INFO L472 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2018-07-25 08:54:29,521 INFO L473 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-07-25 08:54:29,521 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2018-07-25 08:54:29,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-07-25 08:54:29,522 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:29,522 INFO L354 BasicCegarLoop]: trace histogram [36, 35, 1, 1] [2018-07-25 08:54:29,523 INFO L415 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:29,523 INFO L82 PathProgramCache]: Analyzing trace with hash -714784666, now seen corresponding path program 35 times [2018-07-25 08:54:29,523 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:29,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:29,727 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 08:54:29,727 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:29,727 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-07-25 08:54:29,728 INFO L451 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-07-25 08:54:29,728 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-07-25 08:54:29,730 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:54:29,730 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand 38 states. [2018-07-25 08:54:29,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:29,768 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-07-25 08:54:29,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-25 08:54:29,768 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 73 [2018-07-25 08:54:29,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:29,769 INFO L225 Difference]: With dead ends: 77 [2018-07-25 08:54:29,769 INFO L226 Difference]: Without dead ends: 76 [2018-07-25 08:54:29,770 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:54:29,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-07-25 08:54:29,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-07-25 08:54:29,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-07-25 08:54:29,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2018-07-25 08:54:29,774 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 73 [2018-07-25 08:54:29,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:29,775 INFO L472 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2018-07-25 08:54:29,775 INFO L473 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-07-25 08:54:29,775 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2018-07-25 08:54:29,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-07-25 08:54:29,776 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:29,776 INFO L354 BasicCegarLoop]: trace histogram [37, 36, 1, 1] [2018-07-25 08:54:29,776 INFO L415 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:29,777 INFO L82 PathProgramCache]: Analyzing trace with hash 286704424, now seen corresponding path program 36 times [2018-07-25 08:54:29,777 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:29,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:29,986 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 08:54:29,987 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:29,987 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-07-25 08:54:29,988 INFO L451 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-07-25 08:54:29,989 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-07-25 08:54:29,990 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 08:54:29,991 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 39 states. [2018-07-25 08:54:30,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:30,043 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-07-25 08:54:30,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-25 08:54:30,044 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 75 [2018-07-25 08:54:30,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:30,044 INFO L225 Difference]: With dead ends: 79 [2018-07-25 08:54:30,045 INFO L226 Difference]: Without dead ends: 78 [2018-07-25 08:54:30,046 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 08:54:30,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-07-25 08:54:30,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2018-07-25 08:54:30,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-07-25 08:54:30,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2018-07-25 08:54:30,051 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 75 [2018-07-25 08:54:30,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:30,051 INFO L472 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2018-07-25 08:54:30,053 INFO L473 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-07-25 08:54:30,053 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2018-07-25 08:54:30,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-07-25 08:54:30,054 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:30,054 INFO L354 BasicCegarLoop]: trace histogram [38, 37, 1, 1] [2018-07-25 08:54:30,054 INFO L415 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:30,055 INFO L82 PathProgramCache]: Analyzing trace with hash 645045610, now seen corresponding path program 37 times [2018-07-25 08:54:30,055 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:30,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:30,298 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 08:54:30,299 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:30,299 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-07-25 08:54:30,299 INFO L451 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-25 08:54:30,300 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-25 08:54:30,301 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 08:54:30,301 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand 40 states. [2018-07-25 08:54:30,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:30,345 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-07-25 08:54:30,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-07-25 08:54:30,345 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 77 [2018-07-25 08:54:30,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:30,346 INFO L225 Difference]: With dead ends: 81 [2018-07-25 08:54:30,346 INFO L226 Difference]: Without dead ends: 80 [2018-07-25 08:54:30,348 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 0 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 08:54:30,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-07-25 08:54:30,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2018-07-25 08:54:30,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-07-25 08:54:30,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2018-07-25 08:54:30,354 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 77 [2018-07-25 08:54:30,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:30,355 INFO L472 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2018-07-25 08:54:30,355 INFO L473 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-25 08:54:30,355 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2018-07-25 08:54:30,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-07-25 08:54:30,356 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:30,356 INFO L354 BasicCegarLoop]: trace histogram [39, 38, 1, 1] [2018-07-25 08:54:30,357 INFO L415 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:30,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1413541676, now seen corresponding path program 38 times [2018-07-25 08:54:30,357 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:30,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:30,606 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 08:54:30,607 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:30,607 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-25 08:54:30,607 INFO L451 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-07-25 08:54:30,608 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-07-25 08:54:30,609 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 08:54:30,609 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 41 states. [2018-07-25 08:54:30,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:30,654 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-07-25 08:54:30,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-07-25 08:54:30,654 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 79 [2018-07-25 08:54:30,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:30,655 INFO L225 Difference]: With dead ends: 83 [2018-07-25 08:54:30,655 INFO L226 Difference]: Without dead ends: 82 [2018-07-25 08:54:30,657 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 0 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 08:54:30,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-07-25 08:54:30,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2018-07-25 08:54:30,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-07-25 08:54:30,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2018-07-25 08:54:30,661 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 79 [2018-07-25 08:54:30,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:30,661 INFO L472 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2018-07-25 08:54:30,662 INFO L473 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-07-25 08:54:30,662 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2018-07-25 08:54:30,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-07-25 08:54:30,662 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:30,663 INFO L354 BasicCegarLoop]: trace histogram [40, 39, 1, 1] [2018-07-25 08:54:30,663 INFO L415 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:30,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1203886190, now seen corresponding path program 39 times [2018-07-25 08:54:30,663 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:30,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:30,860 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 08:54:30,860 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:30,860 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-07-25 08:54:30,860 INFO L451 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-07-25 08:54:30,861 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-07-25 08:54:30,862 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 08:54:30,862 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand 42 states. [2018-07-25 08:54:30,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:30,909 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-07-25 08:54:30,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-07-25 08:54:30,909 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 81 [2018-07-25 08:54:30,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:30,910 INFO L225 Difference]: With dead ends: 85 [2018-07-25 08:54:30,910 INFO L226 Difference]: Without dead ends: 84 [2018-07-25 08:54:30,911 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 0 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 08:54:30,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-07-25 08:54:30,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2018-07-25 08:54:30,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-07-25 08:54:30,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2018-07-25 08:54:30,915 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 81 [2018-07-25 08:54:30,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:30,916 INFO L472 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2018-07-25 08:54:30,916 INFO L473 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-07-25 08:54:30,916 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2018-07-25 08:54:30,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-07-25 08:54:30,917 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:30,917 INFO L354 BasicCegarLoop]: trace histogram [41, 40, 1, 1] [2018-07-25 08:54:30,917 INFO L415 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:30,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1588427056, now seen corresponding path program 40 times [2018-07-25 08:54:30,918 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:30,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:31,125 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 08:54:31,125 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:31,126 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-07-25 08:54:31,126 INFO L451 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-07-25 08:54:31,127 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-07-25 08:54:31,127 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 08:54:31,128 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand 43 states. [2018-07-25 08:54:31,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:31,177 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-07-25 08:54:31,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-07-25 08:54:31,177 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 83 [2018-07-25 08:54:31,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:31,178 INFO L225 Difference]: With dead ends: 87 [2018-07-25 08:54:31,178 INFO L226 Difference]: Without dead ends: 86 [2018-07-25 08:54:31,180 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 0 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 08:54:31,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-07-25 08:54:31,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-07-25 08:54:31,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-07-25 08:54:31,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2018-07-25 08:54:31,187 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 83 [2018-07-25 08:54:31,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:31,187 INFO L472 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2018-07-25 08:54:31,188 INFO L473 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-07-25 08:54:31,188 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2018-07-25 08:54:31,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-07-25 08:54:31,188 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:31,189 INFO L354 BasicCegarLoop]: trace histogram [42, 41, 1, 1] [2018-07-25 08:54:31,189 INFO L415 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:31,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1765011826, now seen corresponding path program 41 times [2018-07-25 08:54:31,189 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:31,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:31,412 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 08:54:31,412 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:31,413 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-07-25 08:54:31,413 INFO L451 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-25 08:54:31,414 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-25 08:54:31,414 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:54:31,415 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 44 states. [2018-07-25 08:54:31,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:31,465 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-07-25 08:54:31,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-25 08:54:31,465 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 85 [2018-07-25 08:54:31,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:31,466 INFO L225 Difference]: With dead ends: 89 [2018-07-25 08:54:31,466 INFO L226 Difference]: Without dead ends: 88 [2018-07-25 08:54:31,467 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 0 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 08:54:31,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-07-25 08:54:31,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2018-07-25 08:54:31,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-07-25 08:54:31,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2018-07-25 08:54:31,474 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 85 [2018-07-25 08:54:31,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:31,474 INFO L472 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2018-07-25 08:54:31,475 INFO L473 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-25 08:54:31,475 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2018-07-25 08:54:31,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-07-25 08:54:31,475 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:31,476 INFO L354 BasicCegarLoop]: trace histogram [43, 42, 1, 1] [2018-07-25 08:54:31,476 INFO L415 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:31,476 INFO L82 PathProgramCache]: Analyzing trace with hash -335716044, now seen corresponding path program 42 times [2018-07-25 08:54:31,476 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:31,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:31,696 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 08:54:31,696 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:31,696 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-25 08:54:31,697 INFO L451 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-07-25 08:54:31,697 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-07-25 08:54:31,698 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 08:54:31,698 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand 45 states. [2018-07-25 08:54:31,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:31,751 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-07-25 08:54:31,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-07-25 08:54:31,752 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 87 [2018-07-25 08:54:31,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:31,752 INFO L225 Difference]: With dead ends: 91 [2018-07-25 08:54:31,753 INFO L226 Difference]: Without dead ends: 90 [2018-07-25 08:54:31,754 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 0 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 08:54:31,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-07-25 08:54:31,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2018-07-25 08:54:31,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-07-25 08:54:31,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2018-07-25 08:54:31,761 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 87 [2018-07-25 08:54:31,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:31,766 INFO L472 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2018-07-25 08:54:31,766 INFO L473 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-07-25 08:54:31,766 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2018-07-25 08:54:31,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-07-25 08:54:31,767 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:31,767 INFO L354 BasicCegarLoop]: trace histogram [44, 43, 1, 1] [2018-07-25 08:54:31,768 INFO L415 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:31,768 INFO L82 PathProgramCache]: Analyzing trace with hash -500569994, now seen corresponding path program 43 times [2018-07-25 08:54:31,768 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:31,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:31,987 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 08:54:31,987 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:31,987 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-07-25 08:54:31,988 INFO L451 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-07-25 08:54:31,988 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-07-25 08:54:31,989 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 08:54:31,989 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand 46 states. [2018-07-25 08:54:32,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:32,032 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-07-25 08:54:32,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-07-25 08:54:32,032 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 89 [2018-07-25 08:54:32,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:32,033 INFO L225 Difference]: With dead ends: 93 [2018-07-25 08:54:32,033 INFO L226 Difference]: Without dead ends: 92 [2018-07-25 08:54:32,034 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 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 08:54:32,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-07-25 08:54:32,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2018-07-25 08:54:32,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-07-25 08:54:32,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2018-07-25 08:54:32,042 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 89 [2018-07-25 08:54:32,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:32,043 INFO L472 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2018-07-25 08:54:32,043 INFO L473 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-07-25 08:54:32,043 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2018-07-25 08:54:32,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-07-25 08:54:32,044 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:32,044 INFO L354 BasicCegarLoop]: trace histogram [45, 44, 1, 1] [2018-07-25 08:54:32,044 INFO L415 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:32,044 INFO L82 PathProgramCache]: Analyzing trace with hash -11425992, now seen corresponding path program 44 times [2018-07-25 08:54:32,045 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:32,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:32,265 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 08:54:32,265 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:32,267 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-07-25 08:54:32,268 INFO L451 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-07-25 08:54:32,268 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-07-25 08:54:32,269 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 08:54:32,269 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand 47 states. [2018-07-25 08:54:32,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:32,323 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-07-25 08:54:32,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-07-25 08:54:32,323 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 91 [2018-07-25 08:54:32,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:32,324 INFO L225 Difference]: With dead ends: 95 [2018-07-25 08:54:32,325 INFO L226 Difference]: Without dead ends: 94 [2018-07-25 08:54:32,325 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 0 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 08:54:32,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-07-25 08:54:32,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2018-07-25 08:54:32,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-07-25 08:54:32,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2018-07-25 08:54:32,338 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 91 [2018-07-25 08:54:32,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:32,338 INFO L472 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2018-07-25 08:54:32,338 INFO L473 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-07-25 08:54:32,338 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2018-07-25 08:54:32,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-07-25 08:54:32,339 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:32,342 INFO L354 BasicCegarLoop]: trace histogram [46, 45, 1, 1] [2018-07-25 08:54:32,343 INFO L415 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:32,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1904524666, now seen corresponding path program 45 times [2018-07-25 08:54:32,343 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:32,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:32,597 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 08:54:32,598 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:32,598 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-07-25 08:54:32,598 INFO L451 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-25 08:54:32,599 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-25 08:54:32,599 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 08:54:32,600 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand 48 states. [2018-07-25 08:54:32,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:32,652 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-07-25 08:54:32,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-07-25 08:54:32,652 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 93 [2018-07-25 08:54:32,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:32,653 INFO L225 Difference]: With dead ends: 97 [2018-07-25 08:54:32,654 INFO L226 Difference]: Without dead ends: 96 [2018-07-25 08:54:32,655 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 0 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 08:54:32,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-07-25 08:54:32,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-07-25 08:54:32,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-07-25 08:54:32,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2018-07-25 08:54:32,661 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 93 [2018-07-25 08:54:32,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:32,661 INFO L472 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2018-07-25 08:54:32,662 INFO L473 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-25 08:54:32,662 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2018-07-25 08:54:32,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-07-25 08:54:32,663 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:32,663 INFO L354 BasicCegarLoop]: trace histogram [47, 46, 1, 1] [2018-07-25 08:54:32,663 INFO L415 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:32,664 INFO L82 PathProgramCache]: Analyzing trace with hash 592137020, now seen corresponding path program 46 times [2018-07-25 08:54:32,664 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:32,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:32,956 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 08:54:32,956 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:32,956 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-25 08:54:32,957 INFO L451 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-07-25 08:54:32,957 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-07-25 08:54:32,958 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 08:54:32,958 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 49 states. [2018-07-25 08:54:33,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:33,009 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-07-25 08:54:33,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-07-25 08:54:33,009 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 95 [2018-07-25 08:54:33,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:33,010 INFO L225 Difference]: With dead ends: 99 [2018-07-25 08:54:33,010 INFO L226 Difference]: Without dead ends: 98 [2018-07-25 08:54:33,011 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 08:54:33,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-07-25 08:54:33,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2018-07-25 08:54:33,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-07-25 08:54:33,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2018-07-25 08:54:33,018 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 95 [2018-07-25 08:54:33,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:33,018 INFO L472 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2018-07-25 08:54:33,019 INFO L473 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-07-25 08:54:33,019 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2018-07-25 08:54:33,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-07-25 08:54:33,020 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:33,020 INFO L354 BasicCegarLoop]: trace histogram [48, 47, 1, 1] [2018-07-25 08:54:33,020 INFO L415 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:33,021 INFO L82 PathProgramCache]: Analyzing trace with hash 2107994238, now seen corresponding path program 47 times [2018-07-25 08:54:33,021 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:33,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:33,346 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 08:54:33,346 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:33,347 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-07-25 08:54:33,347 INFO L451 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-07-25 08:54:33,348 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-07-25 08:54:33,348 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:54:33,349 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand 50 states. [2018-07-25 08:54:33,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:33,395 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-07-25 08:54:33,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-07-25 08:54:33,395 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 97 [2018-07-25 08:54:33,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:33,396 INFO L225 Difference]: With dead ends: 101 [2018-07-25 08:54:33,396 INFO L226 Difference]: Without dead ends: 100 [2018-07-25 08:54:33,399 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:54:33,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-07-25 08:54:33,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2018-07-25 08:54:33,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-07-25 08:54:33,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2018-07-25 08:54:33,405 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 97 [2018-07-25 08:54:33,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:33,405 INFO L472 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2018-07-25 08:54:33,406 INFO L473 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-07-25 08:54:33,406 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2018-07-25 08:54:33,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-07-25 08:54:33,407 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:33,408 INFO L354 BasicCegarLoop]: trace histogram [49, 48, 1, 1] [2018-07-25 08:54:33,408 INFO L415 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:33,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1442099904, now seen corresponding path program 48 times [2018-07-25 08:54:33,408 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:33,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:33,651 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 08:54:33,652 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:33,652 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-07-25 08:54:33,652 INFO L451 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-07-25 08:54:33,653 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-07-25 08:54:33,654 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 08:54:33,654 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand 51 states. [2018-07-25 08:54:33,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:33,702 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-07-25 08:54:33,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-07-25 08:54:33,702 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 99 [2018-07-25 08:54:33,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:33,703 INFO L225 Difference]: With dead ends: 103 [2018-07-25 08:54:33,703 INFO L226 Difference]: Without dead ends: 102 [2018-07-25 08:54:33,704 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 0 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 08:54:33,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-07-25 08:54:33,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2018-07-25 08:54:33,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-07-25 08:54:33,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2018-07-25 08:54:33,711 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 99 [2018-07-25 08:54:33,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:33,711 INFO L472 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2018-07-25 08:54:33,711 INFO L473 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-07-25 08:54:33,712 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2018-07-25 08:54:33,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-07-25 08:54:33,713 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:33,713 INFO L354 BasicCegarLoop]: trace histogram [50, 49, 1, 1] [2018-07-25 08:54:33,713 INFO L415 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:33,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1416429954, now seen corresponding path program 49 times [2018-07-25 08:54:33,714 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:33,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:33,931 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 08:54:33,931 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:33,932 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-07-25 08:54:33,932 INFO L451 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-25 08:54:33,933 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-25 08:54:33,933 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 08:54:33,934 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 52 states. [2018-07-25 08:54:33,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:33,985 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-07-25 08:54:33,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-07-25 08:54:33,985 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 101 [2018-07-25 08:54:33,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:33,986 INFO L225 Difference]: With dead ends: 105 [2018-07-25 08:54:33,986 INFO L226 Difference]: Without dead ends: 104 [2018-07-25 08:54:33,987 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 0 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 08:54:33,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-07-25 08:54:33,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2018-07-25 08:54:33,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-07-25 08:54:33,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2018-07-25 08:54:33,992 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 101 [2018-07-25 08:54:33,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:33,993 INFO L472 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2018-07-25 08:54:33,993 INFO L473 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-25 08:54:33,993 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2018-07-25 08:54:33,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-07-25 08:54:33,994 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:33,994 INFO L354 BasicCegarLoop]: trace histogram [51, 50, 1, 1] [2018-07-25 08:54:33,994 INFO L415 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:33,995 INFO L82 PathProgramCache]: Analyzing trace with hash -315445948, now seen corresponding path program 50 times [2018-07-25 08:54:33,995 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:34,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:34,223 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 08:54:34,224 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:34,224 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-25 08:54:34,224 INFO L451 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-07-25 08:54:34,225 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-07-25 08:54:34,226 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 08:54:34,226 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand 53 states. [2018-07-25 08:54:34,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:34,287 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-07-25 08:54:34,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-07-25 08:54:34,287 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 103 [2018-07-25 08:54:34,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:34,288 INFO L225 Difference]: With dead ends: 107 [2018-07-25 08:54:34,288 INFO L226 Difference]: Without dead ends: 106 [2018-07-25 08:54:34,289 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 0 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 08:54:34,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-07-25 08:54:34,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-07-25 08:54:34,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-07-25 08:54:34,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2018-07-25 08:54:34,299 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 103 [2018-07-25 08:54:34,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:34,299 INFO L472 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2018-07-25 08:54:34,299 INFO L473 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-07-25 08:54:34,300 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2018-07-25 08:54:34,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-07-25 08:54:34,301 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:34,301 INFO L354 BasicCegarLoop]: trace histogram [52, 51, 1, 1] [2018-07-25 08:54:34,301 INFO L415 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:34,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1799123078, now seen corresponding path program 51 times [2018-07-25 08:54:34,303 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:34,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:34,550 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 08:54:34,551 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:34,551 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-07-25 08:54:34,551 INFO L451 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-07-25 08:54:34,552 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-07-25 08:54:34,553 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 08:54:34,553 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 54 states. [2018-07-25 08:54:34,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:34,609 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-07-25 08:54:34,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-07-25 08:54:34,609 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 105 [2018-07-25 08:54:34,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:34,610 INFO L225 Difference]: With dead ends: 109 [2018-07-25 08:54:34,610 INFO L226 Difference]: Without dead ends: 108 [2018-07-25 08:54:34,611 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 0 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 08:54:34,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-07-25 08:54:34,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2018-07-25 08:54:34,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-07-25 08:54:34,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 108 transitions. [2018-07-25 08:54:34,617 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 108 transitions. Word has length 105 [2018-07-25 08:54:34,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:34,618 INFO L472 AbstractCegarLoop]: Abstraction has 108 states and 108 transitions. [2018-07-25 08:54:34,618 INFO L473 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-07-25 08:54:34,618 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 108 transitions. [2018-07-25 08:54:34,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-07-25 08:54:34,619 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:34,619 INFO L354 BasicCegarLoop]: trace histogram [53, 52, 1, 1] [2018-07-25 08:54:34,619 INFO L415 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:34,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1914541240, now seen corresponding path program 52 times [2018-07-25 08:54:34,620 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:34,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:34,877 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 08:54:34,878 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:34,878 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-07-25 08:54:34,878 INFO L451 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-07-25 08:54:34,879 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-07-25 08:54:34,880 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 08:54:34,880 INFO L87 Difference]: Start difference. First operand 108 states and 108 transitions. Second operand 55 states. [2018-07-25 08:54:34,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:34,949 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-07-25 08:54:34,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-07-25 08:54:34,950 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 107 [2018-07-25 08:54:34,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:34,951 INFO L225 Difference]: With dead ends: 111 [2018-07-25 08:54:34,951 INFO L226 Difference]: Without dead ends: 110 [2018-07-25 08:54:34,952 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 0 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 08:54:34,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-07-25 08:54:34,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2018-07-25 08:54:34,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-07-25 08:54:34,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions. [2018-07-25 08:54:34,958 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 107 [2018-07-25 08:54:34,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:34,959 INFO L472 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions. [2018-07-25 08:54:34,959 INFO L473 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-07-25 08:54:34,959 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions. [2018-07-25 08:54:34,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-07-25 08:54:34,960 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:34,960 INFO L354 BasicCegarLoop]: trace histogram [54, 53, 1, 1] [2018-07-25 08:54:34,960 INFO L415 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:34,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1628127862, now seen corresponding path program 53 times [2018-07-25 08:54:34,961 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:34,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:35,227 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 08:54:35,227 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:35,227 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-07-25 08:54:35,228 INFO L451 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-25 08:54:35,228 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-25 08:54:35,229 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:54:35,229 INFO L87 Difference]: Start difference. First operand 110 states and 110 transitions. Second operand 56 states. [2018-07-25 08:54:35,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:35,299 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-07-25 08:54:35,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-07-25 08:54:35,299 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 109 [2018-07-25 08:54:35,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:35,300 INFO L225 Difference]: With dead ends: 113 [2018-07-25 08:54:35,301 INFO L226 Difference]: Without dead ends: 112 [2018-07-25 08:54:35,302 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:54:35,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-07-25 08:54:35,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2018-07-25 08:54:35,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-07-25 08:54:35,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 112 transitions. [2018-07-25 08:54:35,307 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 112 transitions. Word has length 109 [2018-07-25 08:54:35,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:35,307 INFO L472 AbstractCegarLoop]: Abstraction has 112 states and 112 transitions. [2018-07-25 08:54:35,308 INFO L473 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-25 08:54:35,308 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 112 transitions. [2018-07-25 08:54:35,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-07-25 08:54:35,309 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:35,309 INFO L354 BasicCegarLoop]: trace histogram [55, 54, 1, 1] [2018-07-25 08:54:35,309 INFO L415 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:35,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1262778548, now seen corresponding path program 54 times [2018-07-25 08:54:35,310 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:35,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:35,634 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 08:54:35,634 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:35,635 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-25 08:54:35,635 INFO L451 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-07-25 08:54:35,636 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-07-25 08:54:35,636 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 08:54:35,637 INFO L87 Difference]: Start difference. First operand 112 states and 112 transitions. Second operand 57 states. [2018-07-25 08:54:35,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:35,714 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-07-25 08:54:35,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-07-25 08:54:35,714 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 111 [2018-07-25 08:54:35,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:35,715 INFO L225 Difference]: With dead ends: 115 [2018-07-25 08:54:35,715 INFO L226 Difference]: Without dead ends: 114 [2018-07-25 08:54:35,716 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 08:54:35,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-07-25 08:54:35,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2018-07-25 08:54:35,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-07-25 08:54:35,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 114 transitions. [2018-07-25 08:54:35,723 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 114 transitions. Word has length 111 [2018-07-25 08:54:35,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:35,724 INFO L472 AbstractCegarLoop]: Abstraction has 114 states and 114 transitions. [2018-07-25 08:54:35,724 INFO L473 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-07-25 08:54:35,724 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 114 transitions. [2018-07-25 08:54:35,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-07-25 08:54:35,725 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:35,726 INFO L354 BasicCegarLoop]: trace histogram [56, 55, 1, 1] [2018-07-25 08:54:35,726 INFO L415 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:35,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1945561230, now seen corresponding path program 55 times [2018-07-25 08:54:35,726 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:35,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:36,101 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 08:54:36,102 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:36,102 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-07-25 08:54:36,102 INFO L451 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-07-25 08:54:36,103 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-07-25 08:54:36,103 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:54:36,104 INFO L87 Difference]: Start difference. First operand 114 states and 114 transitions. Second operand 58 states. [2018-07-25 08:54:36,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:36,180 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-07-25 08:54:36,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-07-25 08:54:36,181 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 113 [2018-07-25 08:54:36,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:36,182 INFO L225 Difference]: With dead ends: 117 [2018-07-25 08:54:36,182 INFO L226 Difference]: Without dead ends: 116 [2018-07-25 08:54:36,183 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:54:36,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-07-25 08:54:36,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2018-07-25 08:54:36,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-07-25 08:54:36,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 116 transitions. [2018-07-25 08:54:36,189 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 116 transitions. Word has length 113 [2018-07-25 08:54:36,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:36,189 INFO L472 AbstractCegarLoop]: Abstraction has 116 states and 116 transitions. [2018-07-25 08:54:36,189 INFO L473 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-07-25 08:54:36,190 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 116 transitions. [2018-07-25 08:54:36,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-07-25 08:54:36,191 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:36,191 INFO L354 BasicCegarLoop]: trace histogram [57, 56, 1, 1] [2018-07-25 08:54:36,191 INFO L415 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:36,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1373569360, now seen corresponding path program 56 times [2018-07-25 08:54:36,192 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:36,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:36,465 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 08:54:36,466 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:36,466 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-07-25 08:54:36,466 INFO L451 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-07-25 08:54:36,467 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-07-25 08:54:36,467 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 08:54:36,468 INFO L87 Difference]: Start difference. First operand 116 states and 116 transitions. Second operand 59 states. [2018-07-25 08:54:36,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:36,541 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2018-07-25 08:54:36,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-07-25 08:54:36,541 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 115 [2018-07-25 08:54:36,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:36,542 INFO L225 Difference]: With dead ends: 119 [2018-07-25 08:54:36,542 INFO L226 Difference]: Without dead ends: 118 [2018-07-25 08:54:36,543 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 08:54:36,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-07-25 08:54:36,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2018-07-25 08:54:36,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-07-25 08:54:36,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 118 transitions. [2018-07-25 08:54:36,548 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 118 transitions. Word has length 115 [2018-07-25 08:54:36,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:36,549 INFO L472 AbstractCegarLoop]: Abstraction has 118 states and 118 transitions. [2018-07-25 08:54:36,549 INFO L473 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-07-25 08:54:36,549 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 118 transitions. [2018-07-25 08:54:36,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-07-25 08:54:36,550 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:36,550 INFO L354 BasicCegarLoop]: trace histogram [58, 57, 1, 1] [2018-07-25 08:54:36,550 INFO L415 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:36,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1445196178, now seen corresponding path program 57 times [2018-07-25 08:54:36,551 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:36,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:36,835 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 08:54:36,835 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:36,835 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-07-25 08:54:36,836 INFO L451 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-25 08:54:36,837 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-25 08:54:36,837 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 08:54:36,838 INFO L87 Difference]: Start difference. First operand 118 states and 118 transitions. Second operand 60 states. [2018-07-25 08:54:36,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:36,910 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-07-25 08:54:36,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-07-25 08:54:36,910 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 117 [2018-07-25 08:54:36,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:36,911 INFO L225 Difference]: With dead ends: 121 [2018-07-25 08:54:36,911 INFO L226 Difference]: Without dead ends: 120 [2018-07-25 08:54:36,912 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 08:54:36,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-07-25 08:54:36,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2018-07-25 08:54:36,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2018-07-25 08:54:36,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 120 transitions. [2018-07-25 08:54:36,918 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 120 transitions. Word has length 117 [2018-07-25 08:54:36,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:36,919 INFO L472 AbstractCegarLoop]: Abstraction has 120 states and 120 transitions. [2018-07-25 08:54:36,919 INFO L473 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-25 08:54:36,919 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 120 transitions. [2018-07-25 08:54:36,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-07-25 08:54:36,920 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:36,920 INFO L354 BasicCegarLoop]: trace histogram [59, 58, 1, 1] [2018-07-25 08:54:36,921 INFO L415 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:36,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1559091540, now seen corresponding path program 58 times [2018-07-25 08:54:36,921 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:36,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:37,225 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 08:54:37,225 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:37,225 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-25 08:54:37,226 INFO L451 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-07-25 08:54:37,227 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-07-25 08:54:37,227 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 08:54:37,227 INFO L87 Difference]: Start difference. First operand 120 states and 120 transitions. Second operand 61 states. [2018-07-25 08:54:37,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:37,312 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2018-07-25 08:54:37,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-07-25 08:54:37,313 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 119 [2018-07-25 08:54:37,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:37,314 INFO L225 Difference]: With dead ends: 123 [2018-07-25 08:54:37,314 INFO L226 Difference]: Without dead ends: 122 [2018-07-25 08:54:37,315 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 08:54:37,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-07-25 08:54:37,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2018-07-25 08:54:37,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-07-25 08:54:37,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 122 transitions. [2018-07-25 08:54:37,321 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 122 transitions. Word has length 119 [2018-07-25 08:54:37,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:37,321 INFO L472 AbstractCegarLoop]: Abstraction has 122 states and 122 transitions. [2018-07-25 08:54:37,322 INFO L473 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-07-25 08:54:37,322 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 122 transitions. [2018-07-25 08:54:37,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-07-25 08:54:37,323 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:37,323 INFO L354 BasicCegarLoop]: trace histogram [60, 59, 1, 1] [2018-07-25 08:54:37,323 INFO L415 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:37,324 INFO L82 PathProgramCache]: Analyzing trace with hash -656615274, now seen corresponding path program 59 times [2018-07-25 08:54:37,324 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:37,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:37,636 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 08:54:37,636 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:37,637 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-07-25 08:54:37,637 INFO L451 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-07-25 08:54:37,638 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-07-25 08:54:37,639 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:54:37,639 INFO L87 Difference]: Start difference. First operand 122 states and 122 transitions. Second operand 62 states. [2018-07-25 08:54:37,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:37,699 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-07-25 08:54:37,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-07-25 08:54:37,700 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 121 [2018-07-25 08:54:37,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:37,701 INFO L225 Difference]: With dead ends: 125 [2018-07-25 08:54:37,701 INFO L226 Difference]: Without dead ends: 124 [2018-07-25 08:54:37,702 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:54:37,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-07-25 08:54:37,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2018-07-25 08:54:37,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-07-25 08:54:37,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 124 transitions. [2018-07-25 08:54:37,707 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 124 transitions. Word has length 121 [2018-07-25 08:54:37,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:37,708 INFO L472 AbstractCegarLoop]: Abstraction has 124 states and 124 transitions. [2018-07-25 08:54:37,708 INFO L473 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-07-25 08:54:37,708 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 124 transitions. [2018-07-25 08:54:37,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-07-25 08:54:37,709 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:37,709 INFO L354 BasicCegarLoop]: trace histogram [61, 60, 1, 1] [2018-07-25 08:54:37,709 INFO L415 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:37,710 INFO L82 PathProgramCache]: Analyzing trace with hash 352915288, now seen corresponding path program 60 times [2018-07-25 08:54:37,710 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:37,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:38,016 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 08:54:38,017 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:38,017 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-07-25 08:54:38,017 INFO L451 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-07-25 08:54:38,018 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-07-25 08:54:38,019 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 08:54:38,019 INFO L87 Difference]: Start difference. First operand 124 states and 124 transitions. Second operand 63 states. [2018-07-25 08:54:38,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:38,101 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2018-07-25 08:54:38,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-07-25 08:54:38,101 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 123 [2018-07-25 08:54:38,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:38,102 INFO L225 Difference]: With dead ends: 127 [2018-07-25 08:54:38,102 INFO L226 Difference]: Without dead ends: 126 [2018-07-25 08:54:38,103 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 0 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 08:54:38,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-07-25 08:54:38,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2018-07-25 08:54:38,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-07-25 08:54:38,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 126 transitions. [2018-07-25 08:54:38,109 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 126 transitions. Word has length 123 [2018-07-25 08:54:38,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:38,109 INFO L472 AbstractCegarLoop]: Abstraction has 126 states and 126 transitions. [2018-07-25 08:54:38,109 INFO L473 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-07-25 08:54:38,109 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 126 transitions. [2018-07-25 08:54:38,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-07-25 08:54:38,110 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:38,111 INFO L354 BasicCegarLoop]: trace histogram [62, 61, 1, 1] [2018-07-25 08:54:38,111 INFO L415 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:38,111 INFO L82 PathProgramCache]: Analyzing trace with hash -150823526, now seen corresponding path program 61 times [2018-07-25 08:54:38,111 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:38,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:38,409 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 08:54:38,409 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:38,409 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-07-25 08:54:38,410 INFO L451 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-25 08:54:38,410 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-25 08:54:38,411 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:54:38,411 INFO L87 Difference]: Start difference. First operand 126 states and 126 transitions. Second operand 64 states. [2018-07-25 08:54:38,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:38,476 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-07-25 08:54:38,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-07-25 08:54:38,476 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 125 [2018-07-25 08:54:38,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:38,477 INFO L225 Difference]: With dead ends: 129 [2018-07-25 08:54:38,477 INFO L226 Difference]: Without dead ends: 128 [2018-07-25 08:54:38,478 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 0 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 08:54:38,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-07-25 08:54:38,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2018-07-25 08:54:38,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-07-25 08:54:38,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 128 transitions. [2018-07-25 08:54:38,485 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 128 transitions. Word has length 125 [2018-07-25 08:54:38,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:38,486 INFO L472 AbstractCegarLoop]: Abstraction has 128 states and 128 transitions. [2018-07-25 08:54:38,486 INFO L473 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-25 08:54:38,486 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 128 transitions. [2018-07-25 08:54:38,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-07-25 08:54:38,487 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:38,487 INFO L354 BasicCegarLoop]: trace histogram [63, 62, 1, 1] [2018-07-25 08:54:38,487 INFO L415 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:38,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1087480668, now seen corresponding path program 62 times [2018-07-25 08:54:38,488 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:38,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:38,819 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:38,820 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:38,820 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-25 08:54:38,820 INFO L451 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-07-25 08:54:38,821 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-07-25 08:54:38,822 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:54:38,822 INFO L87 Difference]: Start difference. First operand 128 states and 128 transitions. Second operand 65 states. [2018-07-25 08:54:38,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:38,918 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2018-07-25 08:54:38,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-07-25 08:54:38,918 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 127 [2018-07-25 08:54:38,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:38,919 INFO L225 Difference]: With dead ends: 131 [2018-07-25 08:54:38,919 INFO L226 Difference]: Without dead ends: 130 [2018-07-25 08:54:38,920 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:54:38,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-07-25 08:54:38,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2018-07-25 08:54:38,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-07-25 08:54:38,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 130 transitions. [2018-07-25 08:54:38,927 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 130 transitions. Word has length 127 [2018-07-25 08:54:38,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:38,928 INFO L472 AbstractCegarLoop]: Abstraction has 130 states and 130 transitions. [2018-07-25 08:54:38,928 INFO L473 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-07-25 08:54:38,928 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 130 transitions. [2018-07-25 08:54:38,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-07-25 08:54:38,929 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:38,930 INFO L354 BasicCegarLoop]: trace histogram [64, 63, 1, 1] [2018-07-25 08:54:38,930 INFO L415 AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:38,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1391870110, now seen corresponding path program 63 times [2018-07-25 08:54:38,930 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:38,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:39,221 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 08:54:39,222 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:39,222 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-07-25 08:54:39,222 INFO L451 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-07-25 08:54:39,223 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-07-25 08:54:39,223 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:54:39,224 INFO L87 Difference]: Start difference. First operand 130 states and 130 transitions. Second operand 66 states. [2018-07-25 08:54:39,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:39,288 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-07-25 08:54:39,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-07-25 08:54:39,289 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 129 [2018-07-25 08:54:39,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:39,290 INFO L225 Difference]: With dead ends: 133 [2018-07-25 08:54:39,290 INFO L226 Difference]: Without dead ends: 132 [2018-07-25 08:54:39,291 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:54:39,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-07-25 08:54:39,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2018-07-25 08:54:39,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-07-25 08:54:39,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 132 transitions. [2018-07-25 08:54:39,298 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 132 transitions. Word has length 129 [2018-07-25 08:54:39,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:39,299 INFO L472 AbstractCegarLoop]: Abstraction has 132 states and 132 transitions. [2018-07-25 08:54:39,299 INFO L473 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-07-25 08:54:39,299 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 132 transitions. [2018-07-25 08:54:39,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-07-25 08:54:39,300 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:39,301 INFO L354 BasicCegarLoop]: trace histogram [65, 64, 1, 1] [2018-07-25 08:54:39,301 INFO L415 AbstractCegarLoop]: === Iteration 65 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:39,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1852347744, now seen corresponding path program 64 times [2018-07-25 08:54:39,301 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:39,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:39,606 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 08:54:39,606 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:39,607 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-07-25 08:54:39,607 INFO L451 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-07-25 08:54:39,608 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-07-25 08:54:39,608 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 08:54:39,609 INFO L87 Difference]: Start difference. First operand 132 states and 132 transitions. Second operand 67 states. [2018-07-25 08:54:39,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:39,690 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2018-07-25 08:54:39,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-07-25 08:54:39,690 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 131 [2018-07-25 08:54:39,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:39,691 INFO L225 Difference]: With dead ends: 135 [2018-07-25 08:54:39,692 INFO L226 Difference]: Without dead ends: 134 [2018-07-25 08:54:39,692 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 08:54:39,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-07-25 08:54:39,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2018-07-25 08:54:39,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-07-25 08:54:39,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 134 transitions. [2018-07-25 08:54:39,699 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 134 transitions. Word has length 131 [2018-07-25 08:54:39,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:39,699 INFO L472 AbstractCegarLoop]: Abstraction has 134 states and 134 transitions. [2018-07-25 08:54:39,699 INFO L473 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-07-25 08:54:39,699 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 134 transitions. [2018-07-25 08:54:39,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-07-25 08:54:39,700 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:39,701 INFO L354 BasicCegarLoop]: trace histogram [66, 65, 1, 1] [2018-07-25 08:54:39,701 INFO L415 AbstractCegarLoop]: === Iteration 66 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:39,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1989722530, now seen corresponding path program 65 times [2018-07-25 08:54:39,701 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:39,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:40,004 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 08:54:40,004 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:40,004 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-07-25 08:54:40,005 INFO L451 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-25 08:54:40,006 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-25 08:54:40,006 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:54:40,007 INFO L87 Difference]: Start difference. First operand 134 states and 134 transitions. Second operand 68 states. [2018-07-25 08:54:40,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:40,103 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-07-25 08:54:40,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-07-25 08:54:40,103 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 133 [2018-07-25 08:54:40,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:40,104 INFO L225 Difference]: With dead ends: 137 [2018-07-25 08:54:40,104 INFO L226 Difference]: Without dead ends: 136 [2018-07-25 08:54:40,105 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:54:40,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2018-07-25 08:54:40,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2018-07-25 08:54:40,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-07-25 08:54:40,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 136 transitions. [2018-07-25 08:54:40,114 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 136 transitions. Word has length 133 [2018-07-25 08:54:40,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:40,114 INFO L472 AbstractCegarLoop]: Abstraction has 136 states and 136 transitions. [2018-07-25 08:54:40,115 INFO L473 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-25 08:54:40,115 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 136 transitions. [2018-07-25 08:54:40,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-07-25 08:54:40,116 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:40,116 INFO L354 BasicCegarLoop]: trace histogram [67, 66, 1, 1] [2018-07-25 08:54:40,116 INFO L415 AbstractCegarLoop]: === Iteration 67 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:40,116 INFO L82 PathProgramCache]: Analyzing trace with hash 862905700, now seen corresponding path program 66 times [2018-07-25 08:54:40,117 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:40,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:40,427 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 08:54:40,428 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:40,428 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-25 08:54:40,428 INFO L451 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-07-25 08:54:40,429 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-07-25 08:54:40,429 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 08:54:40,430 INFO L87 Difference]: Start difference. First operand 136 states and 136 transitions. Second operand 69 states. [2018-07-25 08:54:40,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:40,508 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2018-07-25 08:54:40,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-07-25 08:54:40,508 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 135 [2018-07-25 08:54:40,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:40,509 INFO L225 Difference]: With dead ends: 139 [2018-07-25 08:54:40,509 INFO L226 Difference]: Without dead ends: 138 [2018-07-25 08:54:40,510 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 08:54:40,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-07-25 08:54:40,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2018-07-25 08:54:40,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-07-25 08:54:40,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 138 transitions. [2018-07-25 08:54:40,516 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 138 transitions. Word has length 135 [2018-07-25 08:54:40,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:40,516 INFO L472 AbstractCegarLoop]: Abstraction has 138 states and 138 transitions. [2018-07-25 08:54:40,517 INFO L473 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-07-25 08:54:40,517 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 138 transitions. [2018-07-25 08:54:40,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-07-25 08:54:40,518 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:40,518 INFO L354 BasicCegarLoop]: trace histogram [68, 67, 1, 1] [2018-07-25 08:54:40,518 INFO L415 AbstractCegarLoop]: === Iteration 68 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:40,519 INFO L82 PathProgramCache]: Analyzing trace with hash 323690662, now seen corresponding path program 67 times [2018-07-25 08:54:40,519 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:40,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:40,860 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 08:54:40,860 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:40,860 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-07-25 08:54:40,861 INFO L451 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-07-25 08:54:40,862 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-07-25 08:54:40,863 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:54:40,863 INFO L87 Difference]: Start difference. First operand 138 states and 138 transitions. Second operand 70 states. [2018-07-25 08:54:40,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:40,935 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-07-25 08:54:40,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-07-25 08:54:40,935 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 137 [2018-07-25 08:54:40,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:40,937 INFO L225 Difference]: With dead ends: 141 [2018-07-25 08:54:40,937 INFO L226 Difference]: Without dead ends: 140 [2018-07-25 08:54:40,938 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:54:40,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-07-25 08:54:40,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2018-07-25 08:54:40,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-07-25 08:54:40,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 140 transitions. [2018-07-25 08:54:40,944 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 140 transitions. Word has length 137 [2018-07-25 08:54:40,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:40,945 INFO L472 AbstractCegarLoop]: Abstraction has 140 states and 140 transitions. [2018-07-25 08:54:40,945 INFO L473 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-07-25 08:54:40,945 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 140 transitions. [2018-07-25 08:54:40,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-07-25 08:54:40,947 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:40,947 INFO L354 BasicCegarLoop]: trace histogram [69, 68, 1, 1] [2018-07-25 08:54:40,947 INFO L415 AbstractCegarLoop]: === Iteration 69 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:40,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1829081960, now seen corresponding path program 68 times [2018-07-25 08:54:40,948 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:40,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:41,401 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 08:54:41,401 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:41,401 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-07-25 08:54:41,402 INFO L451 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-07-25 08:54:41,403 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-07-25 08:54:41,403 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 08:54:41,403 INFO L87 Difference]: Start difference. First operand 140 states and 140 transitions. Second operand 71 states. [2018-07-25 08:54:41,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:41,467 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-07-25 08:54:41,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-07-25 08:54:41,467 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 139 [2018-07-25 08:54:41,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:41,468 INFO L225 Difference]: With dead ends: 143 [2018-07-25 08:54:41,468 INFO L226 Difference]: Without dead ends: 142 [2018-07-25 08:54:41,469 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 08:54:41,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2018-07-25 08:54:41,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2018-07-25 08:54:41,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-07-25 08:54:41,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 142 transitions. [2018-07-25 08:54:41,475 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 142 transitions. Word has length 139 [2018-07-25 08:54:41,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:41,475 INFO L472 AbstractCegarLoop]: Abstraction has 142 states and 142 transitions. [2018-07-25 08:54:41,475 INFO L473 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-07-25 08:54:41,475 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 142 transitions. [2018-07-25 08:54:41,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-07-25 08:54:41,476 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:41,477 INFO L354 BasicCegarLoop]: trace histogram [70, 69, 1, 1] [2018-07-25 08:54:41,477 INFO L415 AbstractCegarLoop]: === Iteration 70 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:41,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1106140586, now seen corresponding path program 69 times [2018-07-25 08:54:41,477 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:41,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:41,794 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 08:54:41,795 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:41,795 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-07-25 08:54:41,795 INFO L451 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-25 08:54:41,796 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-25 08:54:41,797 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:54:41,797 INFO L87 Difference]: Start difference. First operand 142 states and 142 transitions. Second operand 72 states. [2018-07-25 08:54:41,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:41,856 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-07-25 08:54:41,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-07-25 08:54:41,857 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 141 [2018-07-25 08:54:41,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:41,858 INFO L225 Difference]: With dead ends: 145 [2018-07-25 08:54:41,858 INFO L226 Difference]: Without dead ends: 144 [2018-07-25 08:54:41,859 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:54:41,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-07-25 08:54:41,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2018-07-25 08:54:41,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-07-25 08:54:41,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 144 transitions. [2018-07-25 08:54:41,864 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 144 transitions. Word has length 141 [2018-07-25 08:54:41,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:41,864 INFO L472 AbstractCegarLoop]: Abstraction has 144 states and 144 transitions. [2018-07-25 08:54:41,864 INFO L473 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-25 08:54:41,864 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 144 transitions. [2018-07-25 08:54:41,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-07-25 08:54:41,865 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:41,866 INFO L354 BasicCegarLoop]: trace histogram [71, 70, 1, 1] [2018-07-25 08:54:41,866 INFO L415 AbstractCegarLoop]: === Iteration 71 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:41,866 INFO L82 PathProgramCache]: Analyzing trace with hash 2144182124, now seen corresponding path program 70 times [2018-07-25 08:54:41,866 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:41,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:42,172 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 08:54:42,173 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:42,173 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-25 08:54:42,173 INFO L451 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-07-25 08:54:42,174 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-07-25 08:54:42,174 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 08:54:42,175 INFO L87 Difference]: Start difference. First operand 144 states and 144 transitions. Second operand 73 states. [2018-07-25 08:54:42,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:42,243 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2018-07-25 08:54:42,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-07-25 08:54:42,244 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 143 [2018-07-25 08:54:42,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:42,245 INFO L225 Difference]: With dead ends: 147 [2018-07-25 08:54:42,245 INFO L226 Difference]: Without dead ends: 146 [2018-07-25 08:54:42,246 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 08:54:42,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-07-25 08:54:42,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2018-07-25 08:54:42,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-07-25 08:54:42,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 146 transitions. [2018-07-25 08:54:42,251 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 146 transitions. Word has length 143 [2018-07-25 08:54:42,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:42,251 INFO L472 AbstractCegarLoop]: Abstraction has 146 states and 146 transitions. [2018-07-25 08:54:42,252 INFO L473 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-07-25 08:54:42,252 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 146 transitions. [2018-07-25 08:54:42,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-07-25 08:54:42,253 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:42,253 INFO L354 BasicCegarLoop]: trace histogram [72, 71, 1, 1] [2018-07-25 08:54:42,253 INFO L415 AbstractCegarLoop]: === Iteration 72 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:42,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1025279826, now seen corresponding path program 71 times [2018-07-25 08:54:42,254 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:42,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:42,597 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 08:54:42,597 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:42,597 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-07-25 08:54:42,598 INFO L451 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-07-25 08:54:42,598 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-07-25 08:54:42,599 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:54:42,599 INFO L87 Difference]: Start difference. First operand 146 states and 146 transitions. Second operand 74 states. [2018-07-25 08:54:42,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:42,705 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-07-25 08:54:42,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-07-25 08:54:42,705 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 145 [2018-07-25 08:54:42,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:42,706 INFO L225 Difference]: With dead ends: 149 [2018-07-25 08:54:42,706 INFO L226 Difference]: Without dead ends: 148 [2018-07-25 08:54:42,707 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:54:42,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-07-25 08:54:42,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2018-07-25 08:54:42,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-07-25 08:54:42,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 148 transitions. [2018-07-25 08:54:42,712 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 148 transitions. Word has length 145 [2018-07-25 08:54:42,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:42,713 INFO L472 AbstractCegarLoop]: Abstraction has 148 states and 148 transitions. [2018-07-25 08:54:42,713 INFO L473 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-07-25 08:54:42,713 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 148 transitions. [2018-07-25 08:54:42,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-07-25 08:54:42,714 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:42,714 INFO L354 BasicCegarLoop]: trace histogram [73, 72, 1, 1] [2018-07-25 08:54:42,715 INFO L415 AbstractCegarLoop]: === Iteration 73 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:42,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1746400912, now seen corresponding path program 72 times [2018-07-25 08:54:42,715 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:42,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:42,989 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 08:54:42,989 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:42,989 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-07-25 08:54:42,989 INFO L451 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-07-25 08:54:42,990 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-07-25 08:54:42,991 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 08:54:42,991 INFO L87 Difference]: Start difference. First operand 148 states and 148 transitions. Second operand 75 states. [2018-07-25 08:54:43,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:43,106 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2018-07-25 08:54:43,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-07-25 08:54:43,107 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 147 [2018-07-25 08:54:43,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:43,108 INFO L225 Difference]: With dead ends: 151 [2018-07-25 08:54:43,108 INFO L226 Difference]: Without dead ends: 150 [2018-07-25 08:54:43,109 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 08:54:43,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-07-25 08:54:43,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2018-07-25 08:54:43,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-07-25 08:54:43,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 150 transitions. [2018-07-25 08:54:43,114 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 150 transitions. Word has length 147 [2018-07-25 08:54:43,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:43,114 INFO L472 AbstractCegarLoop]: Abstraction has 150 states and 150 transitions. [2018-07-25 08:54:43,114 INFO L473 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-07-25 08:54:43,114 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 150 transitions. [2018-07-25 08:54:43,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-07-25 08:54:43,115 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:43,115 INFO L354 BasicCegarLoop]: trace histogram [74, 73, 1, 1] [2018-07-25 08:54:43,116 INFO L415 AbstractCegarLoop]: === Iteration 74 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:43,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1040937394, now seen corresponding path program 73 times [2018-07-25 08:54:43,116 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:43,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:43,403 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 08:54:43,404 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:43,404 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2018-07-25 08:54:43,404 INFO L451 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-25 08:54:43,405 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-25 08:54:43,405 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:54:43,405 INFO L87 Difference]: Start difference. First operand 150 states and 150 transitions. Second operand 76 states. [2018-07-25 08:54:43,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:43,517 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2018-07-25 08:54:43,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-07-25 08:54:43,518 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 149 [2018-07-25 08:54:43,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:43,519 INFO L225 Difference]: With dead ends: 153 [2018-07-25 08:54:43,519 INFO L226 Difference]: Without dead ends: 152 [2018-07-25 08:54:43,520 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:54:43,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2018-07-25 08:54:43,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2018-07-25 08:54:43,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2018-07-25 08:54:43,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 152 transitions. [2018-07-25 08:54:43,525 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 152 transitions. Word has length 149 [2018-07-25 08:54:43,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:43,525 INFO L472 AbstractCegarLoop]: Abstraction has 152 states and 152 transitions. [2018-07-25 08:54:43,525 INFO L473 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-25 08:54:43,525 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 152 transitions. [2018-07-25 08:54:43,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-07-25 08:54:43,526 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:43,526 INFO L354 BasicCegarLoop]: trace histogram [75, 74, 1, 1] [2018-07-25 08:54:43,527 INFO L415 AbstractCegarLoop]: === Iteration 75 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:43,527 INFO L82 PathProgramCache]: Analyzing trace with hash -386543244, now seen corresponding path program 74 times [2018-07-25 08:54:43,527 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:43,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:43,938 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 08:54:43,938 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:43,938 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-25 08:54:43,939 INFO L451 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-07-25 08:54:43,940 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-07-25 08:54:43,940 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 08:54:43,940 INFO L87 Difference]: Start difference. First operand 152 states and 152 transitions. Second operand 77 states. [2018-07-25 08:54:44,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:44,029 INFO L93 Difference]: Finished difference Result 155 states and 155 transitions. [2018-07-25 08:54:44,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-07-25 08:54:44,029 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 151 [2018-07-25 08:54:44,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:44,030 INFO L225 Difference]: With dead ends: 155 [2018-07-25 08:54:44,030 INFO L226 Difference]: Without dead ends: 154 [2018-07-25 08:54:44,031 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 08:54:44,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-07-25 08:54:44,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2018-07-25 08:54:44,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-07-25 08:54:44,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 154 transitions. [2018-07-25 08:54:44,036 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 154 transitions. Word has length 151 [2018-07-25 08:54:44,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:44,036 INFO L472 AbstractCegarLoop]: Abstraction has 154 states and 154 transitions. [2018-07-25 08:54:44,036 INFO L473 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-07-25 08:54:44,037 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 154 transitions. [2018-07-25 08:54:44,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-07-25 08:54:44,037 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:44,038 INFO L354 BasicCegarLoop]: trace histogram [76, 75, 1, 1] [2018-07-25 08:54:44,038 INFO L415 AbstractCegarLoop]: === Iteration 76 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:44,038 INFO L82 PathProgramCache]: Analyzing trace with hash -2100868938, now seen corresponding path program 75 times [2018-07-25 08:54:44,038 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:44,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:44,405 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 08:54:44,405 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:44,406 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-07-25 08:54:44,406 INFO L451 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-07-25 08:54:44,407 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-07-25 08:54:44,407 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 08:54:44,407 INFO L87 Difference]: Start difference. First operand 154 states and 154 transitions. Second operand 78 states. [2018-07-25 08:54:44,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:44,555 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-07-25 08:54:44,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-07-25 08:54:44,556 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 153 [2018-07-25 08:54:44,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:44,557 INFO L225 Difference]: With dead ends: 157 [2018-07-25 08:54:44,557 INFO L226 Difference]: Without dead ends: 156 [2018-07-25 08:54:44,558 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 0 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 08:54:44,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-07-25 08:54:44,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2018-07-25 08:54:44,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-07-25 08:54:44,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 156 transitions. [2018-07-25 08:54:44,565 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 156 transitions. Word has length 153 [2018-07-25 08:54:44,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:44,565 INFO L472 AbstractCegarLoop]: Abstraction has 156 states and 156 transitions. [2018-07-25 08:54:44,565 INFO L473 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-07-25 08:54:44,565 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 156 transitions. [2018-07-25 08:54:44,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-07-25 08:54:44,566 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:44,566 INFO L354 BasicCegarLoop]: trace histogram [77, 76, 1, 1] [2018-07-25 08:54:44,566 INFO L415 AbstractCegarLoop]: === Iteration 77 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:44,567 INFO L82 PathProgramCache]: Analyzing trace with hash -300419208, now seen corresponding path program 76 times [2018-07-25 08:54:44,567 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:44,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:44,945 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 08:54:44,945 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:44,945 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-07-25 08:54:44,946 INFO L451 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-07-25 08:54:44,946 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-07-25 08:54:44,947 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 08:54:44,947 INFO L87 Difference]: Start difference. First operand 156 states and 156 transitions. Second operand 79 states. [2018-07-25 08:54:45,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:45,026 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2018-07-25 08:54:45,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-07-25 08:54:45,027 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 155 [2018-07-25 08:54:45,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:45,028 INFO L225 Difference]: With dead ends: 159 [2018-07-25 08:54:45,028 INFO L226 Difference]: Without dead ends: 158 [2018-07-25 08:54:45,029 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 08:54:45,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-07-25 08:54:45,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2018-07-25 08:54:45,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-07-25 08:54:45,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 158 transitions. [2018-07-25 08:54:45,034 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 158 transitions. Word has length 155 [2018-07-25 08:54:45,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:45,034 INFO L472 AbstractCegarLoop]: Abstraction has 158 states and 158 transitions. [2018-07-25 08:54:45,035 INFO L473 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-07-25 08:54:45,035 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 158 transitions. [2018-07-25 08:54:45,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-07-25 08:54:45,035 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:45,036 INFO L354 BasicCegarLoop]: trace histogram [78, 77, 1, 1] [2018-07-25 08:54:45,036 INFO L415 AbstractCegarLoop]: === Iteration 78 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:45,036 INFO L82 PathProgramCache]: Analyzing trace with hash -940048966, now seen corresponding path program 77 times [2018-07-25 08:54:45,036 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:45,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:45,455 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 08:54:45,455 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:45,456 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2018-07-25 08:54:45,456 INFO L451 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-25 08:54:45,457 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-25 08:54:45,458 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:54:45,458 INFO L87 Difference]: Start difference. First operand 158 states and 158 transitions. Second operand 80 states. [2018-07-25 08:54:45,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:45,617 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2018-07-25 08:54:45,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-07-25 08:54:45,617 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 157 [2018-07-25 08:54:45,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:45,618 INFO L225 Difference]: With dead ends: 161 [2018-07-25 08:54:45,619 INFO L226 Difference]: Without dead ends: 160 [2018-07-25 08:54:45,619 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:54:45,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-07-25 08:54:45,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2018-07-25 08:54:45,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2018-07-25 08:54:45,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 160 transitions. [2018-07-25 08:54:45,629 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 160 transitions. Word has length 157 [2018-07-25 08:54:45,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:45,629 INFO L472 AbstractCegarLoop]: Abstraction has 160 states and 160 transitions. [2018-07-25 08:54:45,630 INFO L473 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-25 08:54:45,630 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 160 transitions. [2018-07-25 08:54:45,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-07-25 08:54:45,631 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:45,631 INFO L354 BasicCegarLoop]: trace histogram [79, 78, 1, 1] [2018-07-25 08:54:45,632 INFO L415 AbstractCegarLoop]: === Iteration 79 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:45,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1443923076, now seen corresponding path program 78 times [2018-07-25 08:54:45,632 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:45,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:46,036 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 08:54:46,036 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:46,036 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-25 08:54:46,037 INFO L451 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-07-25 08:54:46,038 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-07-25 08:54:46,038 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 08:54:46,038 INFO L87 Difference]: Start difference. First operand 160 states and 160 transitions. Second operand 81 states. [2018-07-25 08:54:46,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:46,181 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2018-07-25 08:54:46,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-07-25 08:54:46,182 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 159 [2018-07-25 08:54:46,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:46,183 INFO L225 Difference]: With dead ends: 163 [2018-07-25 08:54:46,183 INFO L226 Difference]: Without dead ends: 162 [2018-07-25 08:54:46,184 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 08:54:46,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2018-07-25 08:54:46,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2018-07-25 08:54:46,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2018-07-25 08:54:46,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 162 transitions. [2018-07-25 08:54:46,189 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 162 transitions. Word has length 159 [2018-07-25 08:54:46,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:46,189 INFO L472 AbstractCegarLoop]: Abstraction has 162 states and 162 transitions. [2018-07-25 08:54:46,189 INFO L473 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-07-25 08:54:46,189 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 162 transitions. [2018-07-25 08:54:46,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-07-25 08:54:46,190 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:46,190 INFO L354 BasicCegarLoop]: trace histogram [80, 79, 1, 1] [2018-07-25 08:54:46,191 INFO L415 AbstractCegarLoop]: === Iteration 80 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:46,191 INFO L82 PathProgramCache]: Analyzing trace with hash -335638338, now seen corresponding path program 79 times [2018-07-25 08:54:46,191 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:46,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:46,593 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 08:54:46,593 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:46,593 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-07-25 08:54:46,594 INFO L451 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-07-25 08:54:46,595 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-07-25 08:54:46,595 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 08:54:46,595 INFO L87 Difference]: Start difference. First operand 162 states and 162 transitions. Second operand 82 states. [2018-07-25 08:54:46,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:46,663 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2018-07-25 08:54:46,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-07-25 08:54:46,663 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 161 [2018-07-25 08:54:46,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:46,664 INFO L225 Difference]: With dead ends: 165 [2018-07-25 08:54:46,664 INFO L226 Difference]: Without dead ends: 164 [2018-07-25 08:54:46,665 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 08:54:46,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2018-07-25 08:54:46,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2018-07-25 08:54:46,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-07-25 08:54:46,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 164 transitions. [2018-07-25 08:54:46,672 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 164 transitions. Word has length 161 [2018-07-25 08:54:46,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:46,672 INFO L472 AbstractCegarLoop]: Abstraction has 164 states and 164 transitions. [2018-07-25 08:54:46,672 INFO L473 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-07-25 08:54:46,672 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 164 transitions. [2018-07-25 08:54:46,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-07-25 08:54:46,673 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:46,673 INFO L354 BasicCegarLoop]: trace histogram [81, 80, 1, 1] [2018-07-25 08:54:46,674 INFO L415 AbstractCegarLoop]: === Iteration 81 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:46,674 INFO L82 PathProgramCache]: Analyzing trace with hash -425894528, now seen corresponding path program 80 times [2018-07-25 08:54:46,674 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:46,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:47,048 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 08:54:47,049 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:47,049 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-07-25 08:54:47,049 INFO L451 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-07-25 08:54:47,050 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-07-25 08:54:47,050 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 08:54:47,050 INFO L87 Difference]: Start difference. First operand 164 states and 164 transitions. Second operand 83 states. [2018-07-25 08:54:47,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:47,149 INFO L93 Difference]: Finished difference Result 167 states and 167 transitions. [2018-07-25 08:54:47,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-07-25 08:54:47,149 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 163 [2018-07-25 08:54:47,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:47,150 INFO L225 Difference]: With dead ends: 167 [2018-07-25 08:54:47,151 INFO L226 Difference]: Without dead ends: 166 [2018-07-25 08:54:47,151 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 08:54:47,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-07-25 08:54:47,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2018-07-25 08:54:47,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2018-07-25 08:54:47,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 166 transitions. [2018-07-25 08:54:47,156 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 166 transitions. Word has length 163 [2018-07-25 08:54:47,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:47,157 INFO L472 AbstractCegarLoop]: Abstraction has 166 states and 166 transitions. [2018-07-25 08:54:47,157 INFO L473 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-07-25 08:54:47,157 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 166 transitions. [2018-07-25 08:54:47,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-07-25 08:54:47,158 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:47,158 INFO L354 BasicCegarLoop]: trace histogram [82, 81, 1, 1] [2018-07-25 08:54:47,158 INFO L415 AbstractCegarLoop]: === Iteration 82 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:47,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1262747198, now seen corresponding path program 81 times [2018-07-25 08:54:47,159 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:47,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:47,451 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 08:54:47,452 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:47,452 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2018-07-25 08:54:47,452 INFO L451 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-07-25 08:54:47,453 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-07-25 08:54:47,453 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 08:54:47,453 INFO L87 Difference]: Start difference. First operand 166 states and 166 transitions. Second operand 84 states. [2018-07-25 08:54:47,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:47,561 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-07-25 08:54:47,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-07-25 08:54:47,562 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 165 [2018-07-25 08:54:47,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:47,563 INFO L225 Difference]: With dead ends: 169 [2018-07-25 08:54:47,563 INFO L226 Difference]: Without dead ends: 168 [2018-07-25 08:54:47,563 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 0 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 08:54:47,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2018-07-25 08:54:47,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2018-07-25 08:54:47,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2018-07-25 08:54:47,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 168 transitions. [2018-07-25 08:54:47,567 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 168 transitions. Word has length 165 [2018-07-25 08:54:47,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:47,568 INFO L472 AbstractCegarLoop]: Abstraction has 168 states and 168 transitions. [2018-07-25 08:54:47,568 INFO L473 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-07-25 08:54:47,568 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 168 transitions. [2018-07-25 08:54:47,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-07-25 08:54:47,569 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:47,569 INFO L354 BasicCegarLoop]: trace histogram [83, 82, 1, 1] [2018-07-25 08:54:47,569 INFO L415 AbstractCegarLoop]: === Iteration 83 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:47,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1975688580, now seen corresponding path program 82 times [2018-07-25 08:54:47,570 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:47,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:47,854 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 08:54:47,855 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:47,855 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-07-25 08:54:47,855 INFO L451 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-07-25 08:54:47,856 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-07-25 08:54:47,856 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 08:54:47,856 INFO L87 Difference]: Start difference. First operand 168 states and 168 transitions. Second operand 85 states. [2018-07-25 08:54:47,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:47,972 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2018-07-25 08:54:47,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-07-25 08:54:47,972 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 167 [2018-07-25 08:54:47,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:47,975 INFO L225 Difference]: With dead ends: 171 [2018-07-25 08:54:47,975 INFO L226 Difference]: Without dead ends: 170 [2018-07-25 08:54:47,976 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 0 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 08:54:47,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-07-25 08:54:47,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2018-07-25 08:54:47,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2018-07-25 08:54:47,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 170 transitions. [2018-07-25 08:54:47,981 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 170 transitions. Word has length 167 [2018-07-25 08:54:47,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:47,982 INFO L472 AbstractCegarLoop]: Abstraction has 170 states and 170 transitions. [2018-07-25 08:54:47,982 INFO L473 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-07-25 08:54:47,982 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 170 transitions. [2018-07-25 08:54:47,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-07-25 08:54:47,983 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:47,983 INFO L354 BasicCegarLoop]: trace histogram [84, 83, 1, 1] [2018-07-25 08:54:47,985 INFO L415 AbstractCegarLoop]: === Iteration 84 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:47,986 INFO L82 PathProgramCache]: Analyzing trace with hash 261181638, now seen corresponding path program 83 times [2018-07-25 08:54:47,986 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:48,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:48,283 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 08:54:48,284 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:48,284 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2018-07-25 08:54:48,284 INFO L451 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-07-25 08:54:48,285 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-07-25 08:54:48,285 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:54:48,285 INFO L87 Difference]: Start difference. First operand 170 states and 170 transitions. Second operand 86 states. [2018-07-25 08:54:48,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:48,404 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2018-07-25 08:54:48,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-07-25 08:54:48,404 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 169 [2018-07-25 08:54:48,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:48,405 INFO L225 Difference]: With dead ends: 173 [2018-07-25 08:54:48,405 INFO L226 Difference]: Without dead ends: 172 [2018-07-25 08:54:48,406 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 0 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 08:54:48,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2018-07-25 08:54:48,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2018-07-25 08:54:48,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2018-07-25 08:54:48,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 172 transitions. [2018-07-25 08:54:48,411 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 172 transitions. Word has length 169 [2018-07-25 08:54:48,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:48,411 INFO L472 AbstractCegarLoop]: Abstraction has 172 states and 172 transitions. [2018-07-25 08:54:48,411 INFO L473 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-07-25 08:54:48,412 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 172 transitions. [2018-07-25 08:54:48,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-07-25 08:54:48,412 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:48,413 INFO L354 BasicCegarLoop]: trace histogram [85, 84, 1, 1] [2018-07-25 08:54:48,413 INFO L415 AbstractCegarLoop]: === Iteration 85 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:48,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1887452040, now seen corresponding path program 84 times [2018-07-25 08:54:48,413 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:48,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:48,763 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 08:54:48,764 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:48,764 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-07-25 08:54:48,764 INFO L451 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-07-25 08:54:48,765 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-07-25 08:54:48,765 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 08:54:48,766 INFO L87 Difference]: Start difference. First operand 172 states and 172 transitions. Second operand 87 states. [2018-07-25 08:54:48,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:48,891 INFO L93 Difference]: Finished difference Result 175 states and 175 transitions. [2018-07-25 08:54:48,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-07-25 08:54:48,891 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 171 [2018-07-25 08:54:48,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:48,892 INFO L225 Difference]: With dead ends: 175 [2018-07-25 08:54:48,893 INFO L226 Difference]: Without dead ends: 174 [2018-07-25 08:54:48,893 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 0 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 08:54:48,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2018-07-25 08:54:48,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2018-07-25 08:54:48,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-07-25 08:54:48,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 174 transitions. [2018-07-25 08:54:48,899 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 174 transitions. Word has length 171 [2018-07-25 08:54:48,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:48,899 INFO L472 AbstractCegarLoop]: Abstraction has 174 states and 174 transitions. [2018-07-25 08:54:48,899 INFO L473 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-07-25 08:54:48,899 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 174 transitions. [2018-07-25 08:54:48,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-07-25 08:54:48,900 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:48,900 INFO L354 BasicCegarLoop]: trace histogram [86, 85, 1, 1] [2018-07-25 08:54:48,901 INFO L415 AbstractCegarLoop]: === Iteration 86 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:48,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1365212618, now seen corresponding path program 85 times [2018-07-25 08:54:48,901 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:48,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:49,280 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 08:54:49,281 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:49,281 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2018-07-25 08:54:49,281 INFO L451 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-07-25 08:54:49,282 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-07-25 08:54:49,282 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:54:49,282 INFO L87 Difference]: Start difference. First operand 174 states and 174 transitions. Second operand 88 states. [2018-07-25 08:54:49,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:49,435 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-07-25 08:54:49,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-07-25 08:54:49,435 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 173 [2018-07-25 08:54:49,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:49,436 INFO L225 Difference]: With dead ends: 177 [2018-07-25 08:54:49,436 INFO L226 Difference]: Without dead ends: 176 [2018-07-25 08:54:49,437 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 0 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 08:54:49,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2018-07-25 08:54:49,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2018-07-25 08:54:49,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-07-25 08:54:49,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 176 transitions. [2018-07-25 08:54:49,443 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 176 transitions. Word has length 173 [2018-07-25 08:54:49,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:49,443 INFO L472 AbstractCegarLoop]: Abstraction has 176 states and 176 transitions. [2018-07-25 08:54:49,443 INFO L473 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-07-25 08:54:49,443 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 176 transitions. [2018-07-25 08:54:49,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-07-25 08:54:49,444 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:49,445 INFO L354 BasicCegarLoop]: trace histogram [87, 86, 1, 1] [2018-07-25 08:54:49,445 INFO L415 AbstractCegarLoop]: === Iteration 87 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:49,445 INFO L82 PathProgramCache]: Analyzing trace with hash 2004301708, now seen corresponding path program 86 times [2018-07-25 08:54:49,445 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:49,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:49,808 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 08:54:49,809 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:49,809 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-07-25 08:54:49,809 INFO L451 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-07-25 08:54:49,810 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-07-25 08:54:49,811 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 08:54:49,811 INFO L87 Difference]: Start difference. First operand 176 states and 176 transitions. Second operand 89 states. [2018-07-25 08:54:49,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:49,900 INFO L93 Difference]: Finished difference Result 179 states and 179 transitions. [2018-07-25 08:54:49,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-07-25 08:54:49,901 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 175 [2018-07-25 08:54:49,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:49,902 INFO L225 Difference]: With dead ends: 179 [2018-07-25 08:54:49,902 INFO L226 Difference]: Without dead ends: 178 [2018-07-25 08:54:49,903 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 0 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 08:54:49,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-07-25 08:54:49,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2018-07-25 08:54:49,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-07-25 08:54:49,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 178 transitions. [2018-07-25 08:54:49,908 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 178 transitions. Word has length 175 [2018-07-25 08:54:49,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:49,909 INFO L472 AbstractCegarLoop]: Abstraction has 178 states and 178 transitions. [2018-07-25 08:54:49,909 INFO L473 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-07-25 08:54:49,909 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 178 transitions. [2018-07-25 08:54:49,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-07-25 08:54:49,910 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:49,910 INFO L354 BasicCegarLoop]: trace histogram [88, 87, 1, 1] [2018-07-25 08:54:49,910 INFO L415 AbstractCegarLoop]: === Iteration 88 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:49,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1988593870, now seen corresponding path program 87 times [2018-07-25 08:54:49,911 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:49,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:50,324 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 08:54:50,325 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:50,325 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-07-25 08:54:50,325 INFO L451 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-07-25 08:54:50,326 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-07-25 08:54:50,327 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 08:54:50,327 INFO L87 Difference]: Start difference. First operand 178 states and 178 transitions. Second operand 90 states. [2018-07-25 08:54:50,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:50,443 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2018-07-25 08:54:50,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-07-25 08:54:50,444 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 177 [2018-07-25 08:54:50,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:50,445 INFO L225 Difference]: With dead ends: 181 [2018-07-25 08:54:50,445 INFO L226 Difference]: Without dead ends: 180 [2018-07-25 08:54:50,445 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 08:54:50,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2018-07-25 08:54:50,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2018-07-25 08:54:50,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2018-07-25 08:54:50,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 180 transitions. [2018-07-25 08:54:50,450 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 180 transitions. Word has length 177 [2018-07-25 08:54:50,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:50,451 INFO L472 AbstractCegarLoop]: Abstraction has 180 states and 180 transitions. [2018-07-25 08:54:50,451 INFO L473 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-07-25 08:54:50,451 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 180 transitions. [2018-07-25 08:54:50,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-07-25 08:54:50,452 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:50,452 INFO L354 BasicCegarLoop]: trace histogram [89, 88, 1, 1] [2018-07-25 08:54:50,452 INFO L415 AbstractCegarLoop]: === Iteration 89 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:50,453 INFO L82 PathProgramCache]: Analyzing trace with hash -221736560, now seen corresponding path program 88 times [2018-07-25 08:54:50,453 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:50,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:50,793 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 08:54:50,794 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:50,794 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-07-25 08:54:50,794 INFO L451 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-07-25 08:54:50,795 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-07-25 08:54:50,796 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 08:54:50,796 INFO L87 Difference]: Start difference. First operand 180 states and 180 transitions. Second operand 91 states. [2018-07-25 08:54:50,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:50,940 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2018-07-25 08:54:50,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-07-25 08:54:50,940 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 179 [2018-07-25 08:54:50,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:50,941 INFO L225 Difference]: With dead ends: 183 [2018-07-25 08:54:50,942 INFO L226 Difference]: Without dead ends: 182 [2018-07-25 08:54:50,942 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 08:54:50,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-07-25 08:54:50,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2018-07-25 08:54:50,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-07-25 08:54:50,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 182 transitions. [2018-07-25 08:54:50,950 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 182 transitions. Word has length 179 [2018-07-25 08:54:50,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:50,950 INFO L472 AbstractCegarLoop]: Abstraction has 182 states and 182 transitions. [2018-07-25 08:54:50,953 INFO L473 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-07-25 08:54:50,953 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 182 transitions. [2018-07-25 08:54:50,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-07-25 08:54:50,955 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:50,955 INFO L354 BasicCegarLoop]: trace histogram [90, 89, 1, 1] [2018-07-25 08:54:50,955 INFO L415 AbstractCegarLoop]: === Iteration 90 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:50,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1659531730, now seen corresponding path program 89 times [2018-07-25 08:54:50,956 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:50,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:51,340 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 08:54:51,340 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:51,340 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2018-07-25 08:54:51,341 INFO L451 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-07-25 08:54:51,342 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-07-25 08:54:51,342 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:54:51,342 INFO L87 Difference]: Start difference. First operand 182 states and 182 transitions. Second operand 92 states. [2018-07-25 08:54:51,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:51,424 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2018-07-25 08:54:51,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-07-25 08:54:51,424 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 181 [2018-07-25 08:54:51,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:51,426 INFO L225 Difference]: With dead ends: 185 [2018-07-25 08:54:51,426 INFO L226 Difference]: Without dead ends: 184 [2018-07-25 08:54:51,426 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 0 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 08:54:51,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-07-25 08:54:51,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2018-07-25 08:54:51,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-07-25 08:54:51,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 184 transitions. [2018-07-25 08:54:51,432 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 184 transitions. Word has length 181 [2018-07-25 08:54:51,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:51,432 INFO L472 AbstractCegarLoop]: Abstraction has 184 states and 184 transitions. [2018-07-25 08:54:51,432 INFO L473 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-07-25 08:54:51,433 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 184 transitions. [2018-07-25 08:54:51,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-07-25 08:54:51,434 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:51,434 INFO L354 BasicCegarLoop]: trace histogram [91, 90, 1, 1] [2018-07-25 08:54:51,434 INFO L415 AbstractCegarLoop]: === Iteration 91 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:51,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1377126804, now seen corresponding path program 90 times [2018-07-25 08:54:51,434 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:51,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:52,008 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 08:54:52,009 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:52,009 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-07-25 08:54:52,009 INFO L451 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-07-25 08:54:52,010 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-07-25 08:54:52,010 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 08:54:52,010 INFO L87 Difference]: Start difference. First operand 184 states and 184 transitions. Second operand 93 states. [2018-07-25 08:54:52,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:52,156 INFO L93 Difference]: Finished difference Result 187 states and 187 transitions. [2018-07-25 08:54:52,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-07-25 08:54:52,157 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 183 [2018-07-25 08:54:52,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:52,158 INFO L225 Difference]: With dead ends: 187 [2018-07-25 08:54:52,158 INFO L226 Difference]: Without dead ends: 186 [2018-07-25 08:54:52,158 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 08:54:52,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-07-25 08:54:52,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2018-07-25 08:54:52,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2018-07-25 08:54:52,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 186 transitions. [2018-07-25 08:54:52,163 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 186 transitions. Word has length 183 [2018-07-25 08:54:52,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:52,164 INFO L472 AbstractCegarLoop]: Abstraction has 186 states and 186 transitions. [2018-07-25 08:54:52,164 INFO L473 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-07-25 08:54:52,164 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 186 transitions. [2018-07-25 08:54:52,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-07-25 08:54:52,165 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:52,165 INFO L354 BasicCegarLoop]: trace histogram [92, 91, 1, 1] [2018-07-25 08:54:52,165 INFO L415 AbstractCegarLoop]: === Iteration 92 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:52,166 INFO L82 PathProgramCache]: Analyzing trace with hash 568932566, now seen corresponding path program 91 times [2018-07-25 08:54:52,166 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:52,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:52,493 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 08:54:52,493 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:52,493 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2018-07-25 08:54:52,494 INFO L451 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-07-25 08:54:52,495 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-07-25 08:54:52,495 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 08:54:52,495 INFO L87 Difference]: Start difference. First operand 186 states and 186 transitions. Second operand 94 states. [2018-07-25 08:54:52,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:52,565 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2018-07-25 08:54:52,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-07-25 08:54:52,565 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 185 [2018-07-25 08:54:52,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:52,566 INFO L225 Difference]: With dead ends: 189 [2018-07-25 08:54:52,566 INFO L226 Difference]: Without dead ends: 188 [2018-07-25 08:54:52,566 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 08:54:52,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-07-25 08:54:52,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2018-07-25 08:54:52,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2018-07-25 08:54:52,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 188 transitions. [2018-07-25 08:54:52,572 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 188 transitions. Word has length 185 [2018-07-25 08:54:52,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:52,572 INFO L472 AbstractCegarLoop]: Abstraction has 188 states and 188 transitions. [2018-07-25 08:54:52,572 INFO L473 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-07-25 08:54:52,572 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 188 transitions. [2018-07-25 08:54:52,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-07-25 08:54:52,573 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:52,573 INFO L354 BasicCegarLoop]: trace histogram [93, 92, 1, 1] [2018-07-25 08:54:52,574 INFO L415 AbstractCegarLoop]: === Iteration 93 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:52,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1283350424, now seen corresponding path program 92 times [2018-07-25 08:54:52,574 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:52,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:52,940 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 08:54:52,940 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:52,940 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-07-25 08:54:52,941 INFO L451 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-07-25 08:54:52,941 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-07-25 08:54:52,942 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 08:54:52,942 INFO L87 Difference]: Start difference. First operand 188 states and 188 transitions. Second operand 95 states. [2018-07-25 08:54:53,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:53,070 INFO L93 Difference]: Finished difference Result 191 states and 191 transitions. [2018-07-25 08:54:53,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-07-25 08:54:53,070 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 187 [2018-07-25 08:54:53,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:53,071 INFO L225 Difference]: With dead ends: 191 [2018-07-25 08:54:53,071 INFO L226 Difference]: Without dead ends: 190 [2018-07-25 08:54:53,072 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 0 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 08:54:53,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-07-25 08:54:53,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2018-07-25 08:54:53,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-07-25 08:54:53,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 190 transitions. [2018-07-25 08:54:53,078 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 190 transitions. Word has length 187 [2018-07-25 08:54:53,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:53,078 INFO L472 AbstractCegarLoop]: Abstraction has 190 states and 190 transitions. [2018-07-25 08:54:53,078 INFO L473 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-07-25 08:54:53,078 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 190 transitions. [2018-07-25 08:54:53,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-07-25 08:54:53,079 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:53,079 INFO L354 BasicCegarLoop]: trace histogram [94, 93, 1, 1] [2018-07-25 08:54:53,079 INFO L415 AbstractCegarLoop]: === Iteration 94 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:53,080 INFO L82 PathProgramCache]: Analyzing trace with hash 644144602, now seen corresponding path program 93 times [2018-07-25 08:54:53,080 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:53,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:53,433 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 08:54:53,433 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:53,433 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2018-07-25 08:54:53,433 INFO L451 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-07-25 08:54:53,434 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-07-25 08:54:53,434 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 08:54:53,435 INFO L87 Difference]: Start difference. First operand 190 states and 190 transitions. Second operand 96 states. [2018-07-25 08:54:53,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:53,588 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2018-07-25 08:54:53,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-07-25 08:54:53,588 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 189 [2018-07-25 08:54:53,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:53,589 INFO L225 Difference]: With dead ends: 193 [2018-07-25 08:54:53,589 INFO L226 Difference]: Without dead ends: 192 [2018-07-25 08:54:53,590 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 0 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 08:54:53,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-07-25 08:54:53,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2018-07-25 08:54:53,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-07-25 08:54:53,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 192 transitions. [2018-07-25 08:54:53,594 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 192 transitions. Word has length 189 [2018-07-25 08:54:53,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:53,595 INFO L472 AbstractCegarLoop]: Abstraction has 192 states and 192 transitions. [2018-07-25 08:54:53,595 INFO L473 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-07-25 08:54:53,595 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 192 transitions. [2018-07-25 08:54:53,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-07-25 08:54:53,595 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:53,596 INFO L354 BasicCegarLoop]: trace histogram [95, 94, 1, 1] [2018-07-25 08:54:53,596 INFO L415 AbstractCegarLoop]: === Iteration 95 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:53,596 INFO L82 PathProgramCache]: Analyzing trace with hash 547672988, now seen corresponding path program 94 times [2018-07-25 08:54:53,596 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:53,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:53,962 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 08:54:53,963 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:53,963 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-07-25 08:54:53,963 INFO L451 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-07-25 08:54:53,964 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-07-25 08:54:53,964 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 08:54:53,965 INFO L87 Difference]: Start difference. First operand 192 states and 192 transitions. Second operand 97 states. [2018-07-25 08:54:54,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:54,055 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-07-25 08:54:54,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-07-25 08:54:54,055 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 191 [2018-07-25 08:54:54,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:54,056 INFO L225 Difference]: With dead ends: 195 [2018-07-25 08:54:54,056 INFO L226 Difference]: Without dead ends: 194 [2018-07-25 08:54:54,057 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 08:54:54,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-07-25 08:54:54,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2018-07-25 08:54:54,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-07-25 08:54:54,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 194 transitions. [2018-07-25 08:54:54,060 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 194 transitions. Word has length 191 [2018-07-25 08:54:54,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:54,061 INFO L472 AbstractCegarLoop]: Abstraction has 194 states and 194 transitions. [2018-07-25 08:54:54,061 INFO L473 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-07-25 08:54:54,061 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 194 transitions. [2018-07-25 08:54:54,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-07-25 08:54:54,061 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:54,062 INFO L354 BasicCegarLoop]: trace histogram [96, 95, 1, 1] [2018-07-25 08:54:54,062 INFO L415 AbstractCegarLoop]: === Iteration 96 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:54,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1967234850, now seen corresponding path program 95 times [2018-07-25 08:54:54,062 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:54,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:54,462 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 08:54:54,462 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:54,462 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96] total 96 [2018-07-25 08:54:54,463 INFO L451 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-07-25 08:54:54,464 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-07-25 08:54:54,464 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:54:54,464 INFO L87 Difference]: Start difference. First operand 194 states and 194 transitions. Second operand 98 states. [2018-07-25 08:54:54,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:54,559 INFO L93 Difference]: Finished difference Result 197 states and 197 transitions. [2018-07-25 08:54:54,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-07-25 08:54:54,559 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 193 [2018-07-25 08:54:54,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:54,561 INFO L225 Difference]: With dead ends: 197 [2018-07-25 08:54:54,561 INFO L226 Difference]: Without dead ends: 196 [2018-07-25 08:54:54,561 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:54:54,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2018-07-25 08:54:54,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2018-07-25 08:54:54,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2018-07-25 08:54:54,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 196 transitions. [2018-07-25 08:54:54,567 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 196 transitions. Word has length 193 [2018-07-25 08:54:54,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:54,568 INFO L472 AbstractCegarLoop]: Abstraction has 196 states and 196 transitions. [2018-07-25 08:54:54,568 INFO L473 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-07-25 08:54:54,568 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 196 transitions. [2018-07-25 08:54:54,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-07-25 08:54:54,569 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:54,569 INFO L354 BasicCegarLoop]: trace histogram [97, 96, 1, 1] [2018-07-25 08:54:54,571 INFO L415 AbstractCegarLoop]: === Iteration 97 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:54,572 INFO L82 PathProgramCache]: Analyzing trace with hash -727079520, now seen corresponding path program 96 times [2018-07-25 08:54:54,572 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:54,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:54,939 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 08:54:54,939 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:54,939 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-07-25 08:54:54,940 INFO L451 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-07-25 08:54:54,940 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-07-25 08:54:54,941 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 08:54:54,941 INFO L87 Difference]: Start difference. First operand 196 states and 196 transitions. Second operand 99 states. [2018-07-25 08:54:55,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:55,027 INFO L93 Difference]: Finished difference Result 199 states and 199 transitions. [2018-07-25 08:54:55,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-07-25 08:54:55,027 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 195 [2018-07-25 08:54:55,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:55,029 INFO L225 Difference]: With dead ends: 199 [2018-07-25 08:54:55,029 INFO L226 Difference]: Without dead ends: 198 [2018-07-25 08:54:55,030 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 08:54:55,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-07-25 08:54:55,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2018-07-25 08:54:55,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-07-25 08:54:55,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 198 transitions. [2018-07-25 08:54:55,036 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 198 transitions. Word has length 195 [2018-07-25 08:54:55,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:55,036 INFO L472 AbstractCegarLoop]: Abstraction has 198 states and 198 transitions. [2018-07-25 08:54:55,036 INFO L473 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-07-25 08:54:55,036 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 198 transitions. [2018-07-25 08:54:55,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-07-25 08:54:55,037 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:55,037 INFO L354 BasicCegarLoop]: trace histogram [98, 97, 1, 1] [2018-07-25 08:54:55,038 INFO L415 AbstractCegarLoop]: === Iteration 98 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:55,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1356251618, now seen corresponding path program 97 times [2018-07-25 08:54:55,038 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:55,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:55,440 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 08:54:55,440 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:55,440 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98] total 98 [2018-07-25 08:54:55,441 INFO L451 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-07-25 08:54:55,442 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-07-25 08:54:55,442 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 08:54:55,442 INFO L87 Difference]: Start difference. First operand 198 states and 198 transitions. Second operand 100 states. [2018-07-25 08:54:55,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:55,535 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2018-07-25 08:54:55,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-07-25 08:54:55,535 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 197 [2018-07-25 08:54:55,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:55,536 INFO L225 Difference]: With dead ends: 201 [2018-07-25 08:54:55,536 INFO L226 Difference]: Without dead ends: 200 [2018-07-25 08:54:55,537 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 08:54:55,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2018-07-25 08:54:55,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2018-07-25 08:54:55,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2018-07-25 08:54:55,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 200 transitions. [2018-07-25 08:54:55,542 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 200 transitions. Word has length 197 [2018-07-25 08:54:55,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:55,543 INFO L472 AbstractCegarLoop]: Abstraction has 200 states and 200 transitions. [2018-07-25 08:54:55,543 INFO L473 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-07-25 08:54:55,543 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 200 transitions. [2018-07-25 08:54:55,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-07-25 08:54:55,544 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:55,544 INFO L354 BasicCegarLoop]: trace histogram [99, 98, 1, 1] [2018-07-25 08:54:55,544 INFO L415 AbstractCegarLoop]: === Iteration 99 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:55,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1982715300, now seen corresponding path program 98 times [2018-07-25 08:54:55,545 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:55,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:55,947 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 08:54:55,948 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:55,948 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-07-25 08:54:55,948 INFO L451 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-07-25 08:54:55,949 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-07-25 08:54:55,949 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 08:54:55,950 INFO L87 Difference]: Start difference. First operand 200 states and 200 transitions. Second operand 101 states. [2018-07-25 08:54:56,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:56,062 INFO L93 Difference]: Finished difference Result 203 states and 203 transitions. [2018-07-25 08:54:56,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-07-25 08:54:56,062 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 199 [2018-07-25 08:54:56,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:56,063 INFO L225 Difference]: With dead ends: 203 [2018-07-25 08:54:56,063 INFO L226 Difference]: Without dead ends: 202 [2018-07-25 08:54:56,064 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 08:54:56,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2018-07-25 08:54:56,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2018-07-25 08:54:56,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2018-07-25 08:54:56,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 202 transitions. [2018-07-25 08:54:56,069 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 202 transitions. Word has length 199 [2018-07-25 08:54:56,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:56,069 INFO L472 AbstractCegarLoop]: Abstraction has 202 states and 202 transitions. [2018-07-25 08:54:56,069 INFO L473 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-07-25 08:54:56,070 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 202 transitions. [2018-07-25 08:54:56,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-07-25 08:54:56,071 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:56,071 INFO L354 BasicCegarLoop]: trace histogram [100, 99, 1, 1] [2018-07-25 08:54:56,071 INFO L415 AbstractCegarLoop]: === Iteration 100 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:56,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1576075034, now seen corresponding path program 99 times [2018-07-25 08:54:56,071 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:56,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:56,534 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 08:54:56,535 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:56,535 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100] total 100 [2018-07-25 08:54:56,535 INFO L451 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-07-25 08:54:56,536 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-07-25 08:54:56,536 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 08:54:56,537 INFO L87 Difference]: Start difference. First operand 202 states and 202 transitions. Second operand 102 states. [2018-07-25 08:54:56,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:56,640 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2018-07-25 08:54:56,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-07-25 08:54:56,640 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 201 [2018-07-25 08:54:56,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:56,641 INFO L225 Difference]: With dead ends: 205 [2018-07-25 08:54:56,641 INFO L226 Difference]: Without dead ends: 204 [2018-07-25 08:54:56,642 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 08:54:56,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2018-07-25 08:54:56,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2018-07-25 08:54:56,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2018-07-25 08:54:56,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 204 transitions. [2018-07-25 08:54:56,648 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 204 transitions. Word has length 201 [2018-07-25 08:54:56,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:56,649 INFO L472 AbstractCegarLoop]: Abstraction has 204 states and 204 transitions. [2018-07-25 08:54:56,649 INFO L473 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-07-25 08:54:56,649 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 204 transitions. [2018-07-25 08:54:56,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-07-25 08:54:56,650 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:56,650 INFO L354 BasicCegarLoop]: trace histogram [101, 100, 1, 1] [2018-07-25 08:54:56,650 INFO L415 AbstractCegarLoop]: === Iteration 101 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:56,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1515348904, now seen corresponding path program 100 times [2018-07-25 08:54:56,651 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:56,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:57,300 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 08:54:57,300 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:57,300 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-07-25 08:54:57,300 INFO L451 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-07-25 08:54:57,301 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-07-25 08:54:57,301 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 08:54:57,302 INFO L87 Difference]: Start difference. First operand 204 states and 204 transitions. Second operand 103 states. [2018-07-25 08:54:57,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:57,461 INFO L93 Difference]: Finished difference Result 207 states and 207 transitions. [2018-07-25 08:54:57,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-07-25 08:54:57,461 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 203 [2018-07-25 08:54:57,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:57,462 INFO L225 Difference]: With dead ends: 207 [2018-07-25 08:54:57,462 INFO L226 Difference]: Without dead ends: 206 [2018-07-25 08:54:57,463 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 08:54:57,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2018-07-25 08:54:57,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2018-07-25 08:54:57,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2018-07-25 08:54:57,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 206 transitions. [2018-07-25 08:54:57,469 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 206 transitions. Word has length 203 [2018-07-25 08:54:57,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:57,469 INFO L472 AbstractCegarLoop]: Abstraction has 206 states and 206 transitions. [2018-07-25 08:54:57,469 INFO L473 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-07-25 08:54:57,469 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 206 transitions. [2018-07-25 08:54:57,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-07-25 08:54:57,470 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:57,471 INFO L354 BasicCegarLoop]: trace histogram [102, 101, 1, 1] [2018-07-25 08:54:57,471 INFO L415 AbstractCegarLoop]: === Iteration 102 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:57,471 INFO L82 PathProgramCache]: Analyzing trace with hash 256384490, now seen corresponding path program 101 times [2018-07-25 08:54:57,471 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:57,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:57,858 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 08:54:57,859 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:57,859 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102] total 102 [2018-07-25 08:54:57,859 INFO L451 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-07-25 08:54:57,860 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-07-25 08:54:57,861 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:54:57,861 INFO L87 Difference]: Start difference. First operand 206 states and 206 transitions. Second operand 104 states. [2018-07-25 08:54:58,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:58,033 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2018-07-25 08:54:58,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-07-25 08:54:58,033 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 205 [2018-07-25 08:54:58,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:58,034 INFO L225 Difference]: With dead ends: 209 [2018-07-25 08:54:58,034 INFO L226 Difference]: Without dead ends: 208 [2018-07-25 08:54:58,035 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:54:58,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-07-25 08:54:58,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2018-07-25 08:54:58,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2018-07-25 08:54:58,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 208 transitions. [2018-07-25 08:54:58,041 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 208 transitions. Word has length 205 [2018-07-25 08:54:58,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:58,041 INFO L472 AbstractCegarLoop]: Abstraction has 208 states and 208 transitions. [2018-07-25 08:54:58,041 INFO L473 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-07-25 08:54:58,041 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 208 transitions. [2018-07-25 08:54:58,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-07-25 08:54:58,042 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:58,042 INFO L354 BasicCegarLoop]: trace histogram [103, 102, 1, 1] [2018-07-25 08:54:58,043 INFO L415 AbstractCegarLoop]: === Iteration 103 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:58,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1572360108, now seen corresponding path program 102 times [2018-07-25 08:54:58,043 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:58,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:58,448 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 08:54:58,448 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:58,448 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-07-25 08:54:58,449 INFO L451 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-07-25 08:54:58,450 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-07-25 08:54:58,451 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 08:54:58,451 INFO L87 Difference]: Start difference. First operand 208 states and 208 transitions. Second operand 105 states. [2018-07-25 08:54:58,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:58,586 INFO L93 Difference]: Finished difference Result 211 states and 211 transitions. [2018-07-25 08:54:58,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-07-25 08:54:58,587 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 207 [2018-07-25 08:54:58,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:58,587 INFO L225 Difference]: With dead ends: 211 [2018-07-25 08:54:58,587 INFO L226 Difference]: Without dead ends: 210 [2018-07-25 08:54:58,588 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 0 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 08:54:58,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2018-07-25 08:54:58,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2018-07-25 08:54:58,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2018-07-25 08:54:58,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 210 transitions. [2018-07-25 08:54:58,593 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 210 transitions. Word has length 207 [2018-07-25 08:54:58,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:58,593 INFO L472 AbstractCegarLoop]: Abstraction has 210 states and 210 transitions. [2018-07-25 08:54:58,593 INFO L473 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-07-25 08:54:58,593 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 210 transitions. [2018-07-25 08:54:58,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-07-25 08:54:58,594 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:58,594 INFO L354 BasicCegarLoop]: trace histogram [104, 103, 1, 1] [2018-07-25 08:54:58,594 INFO L415 AbstractCegarLoop]: === Iteration 104 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:58,594 INFO L82 PathProgramCache]: Analyzing trace with hash -790423314, now seen corresponding path program 103 times [2018-07-25 08:54:58,594 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:58,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:59,041 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 08:54:59,042 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:59,042 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104] total 104 [2018-07-25 08:54:59,042 INFO L451 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-07-25 08:54:59,044 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-07-25 08:54:59,044 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 08:54:59,044 INFO L87 Difference]: Start difference. First operand 210 states and 210 transitions. Second operand 106 states. [2018-07-25 08:54:59,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:59,237 INFO L93 Difference]: Finished difference Result 213 states and 213 transitions. [2018-07-25 08:54:59,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-07-25 08:54:59,238 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 209 [2018-07-25 08:54:59,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:59,239 INFO L225 Difference]: With dead ends: 213 [2018-07-25 08:54:59,239 INFO L226 Difference]: Without dead ends: 212 [2018-07-25 08:54:59,240 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 08:54:59,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2018-07-25 08:54:59,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2018-07-25 08:54:59,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2018-07-25 08:54:59,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 212 transitions. [2018-07-25 08:54:59,246 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 212 transitions. Word has length 209 [2018-07-25 08:54:59,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:59,246 INFO L472 AbstractCegarLoop]: Abstraction has 212 states and 212 transitions. [2018-07-25 08:54:59,246 INFO L473 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-07-25 08:54:59,246 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 212 transitions. [2018-07-25 08:54:59,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-07-25 08:54:59,247 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:59,247 INFO L354 BasicCegarLoop]: trace histogram [105, 104, 1, 1] [2018-07-25 08:54:59,248 INFO L415 AbstractCegarLoop]: === Iteration 105 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:59,248 INFO L82 PathProgramCache]: Analyzing trace with hash 612407728, now seen corresponding path program 104 times [2018-07-25 08:54:59,248 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:59,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:59,713 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 08:54:59,714 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:59,714 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2018-07-25 08:54:59,714 INFO L451 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-07-25 08:54:59,715 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-07-25 08:54:59,716 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 08:54:59,716 INFO L87 Difference]: Start difference. First operand 212 states and 212 transitions. Second operand 107 states. [2018-07-25 08:55:00,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:00,034 INFO L93 Difference]: Finished difference Result 215 states and 215 transitions. [2018-07-25 08:55:00,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-07-25 08:55:00,034 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 211 [2018-07-25 08:55:00,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:00,035 INFO L225 Difference]: With dead ends: 215 [2018-07-25 08:55:00,035 INFO L226 Difference]: Without dead ends: 214 [2018-07-25 08:55:00,036 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 08:55:00,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2018-07-25 08:55:00,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2018-07-25 08:55:00,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-07-25 08:55:00,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 214 transitions. [2018-07-25 08:55:00,043 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 214 transitions. Word has length 211 [2018-07-25 08:55:00,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:00,043 INFO L472 AbstractCegarLoop]: Abstraction has 214 states and 214 transitions. [2018-07-25 08:55:00,043 INFO L473 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-07-25 08:55:00,043 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 214 transitions. [2018-07-25 08:55:00,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-07-25 08:55:00,045 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:00,045 INFO L354 BasicCegarLoop]: trace histogram [106, 105, 1, 1] [2018-07-25 08:55:00,045 INFO L415 AbstractCegarLoop]: === Iteration 106 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:00,045 INFO L82 PathProgramCache]: Analyzing trace with hash 113308146, now seen corresponding path program 105 times [2018-07-25 08:55:00,045 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:00,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:00,591 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 08:55:00,592 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:00,592 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106] total 106 [2018-07-25 08:55:00,592 INFO L451 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-07-25 08:55:00,593 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-07-25 08:55:00,594 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 08:55:00,594 INFO L87 Difference]: Start difference. First operand 214 states and 214 transitions. Second operand 108 states. [2018-07-25 08:55:00,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:00,778 INFO L93 Difference]: Finished difference Result 217 states and 217 transitions. [2018-07-25 08:55:00,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-07-25 08:55:00,778 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 213 [2018-07-25 08:55:00,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:00,778 INFO L225 Difference]: With dead ends: 217 [2018-07-25 08:55:00,778 INFO L226 Difference]: Without dead ends: 216 [2018-07-25 08:55:00,779 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 08:55:00,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2018-07-25 08:55:00,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2018-07-25 08:55:00,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2018-07-25 08:55:00,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 216 transitions. [2018-07-25 08:55:00,784 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 216 transitions. Word has length 213 [2018-07-25 08:55:00,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:00,785 INFO L472 AbstractCegarLoop]: Abstraction has 216 states and 216 transitions. [2018-07-25 08:55:00,785 INFO L473 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-07-25 08:55:00,785 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 216 transitions. [2018-07-25 08:55:00,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-07-25 08:55:00,786 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:00,786 INFO L354 BasicCegarLoop]: trace histogram [107, 106, 1, 1] [2018-07-25 08:55:00,786 INFO L415 AbstractCegarLoop]: === Iteration 107 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:00,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1514946996, now seen corresponding path program 106 times [2018-07-25 08:55:00,787 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:00,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:01,241 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 08:55:01,241 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:01,242 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2018-07-25 08:55:01,242 INFO L451 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-07-25 08:55:01,243 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-07-25 08:55:01,243 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 08:55:01,244 INFO L87 Difference]: Start difference. First operand 216 states and 216 transitions. Second operand 109 states. [2018-07-25 08:55:01,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:01,355 INFO L93 Difference]: Finished difference Result 219 states and 219 transitions. [2018-07-25 08:55:01,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-07-25 08:55:01,356 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 215 [2018-07-25 08:55:01,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:01,356 INFO L225 Difference]: With dead ends: 219 [2018-07-25 08:55:01,356 INFO L226 Difference]: Without dead ends: 218 [2018-07-25 08:55:01,357 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 08:55:01,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-07-25 08:55:01,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2018-07-25 08:55:01,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2018-07-25 08:55:01,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 218 transitions. [2018-07-25 08:55:01,362 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 218 transitions. Word has length 215 [2018-07-25 08:55:01,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:01,362 INFO L472 AbstractCegarLoop]: Abstraction has 218 states and 218 transitions. [2018-07-25 08:55:01,362 INFO L473 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-07-25 08:55:01,363 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 218 transitions. [2018-07-25 08:55:01,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-07-25 08:55:01,364 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:01,364 INFO L354 BasicCegarLoop]: trace histogram [108, 107, 1, 1] [2018-07-25 08:55:01,364 INFO L415 AbstractCegarLoop]: === Iteration 108 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:01,364 INFO L82 PathProgramCache]: Analyzing trace with hash -129849098, now seen corresponding path program 107 times [2018-07-25 08:55:01,364 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:01,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:01,889 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 08:55:01,889 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:01,889 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108] total 108 [2018-07-25 08:55:01,890 INFO L451 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-07-25 08:55:01,891 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-07-25 08:55:01,891 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 08:55:01,891 INFO L87 Difference]: Start difference. First operand 218 states and 218 transitions. Second operand 110 states. [2018-07-25 08:55:02,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:02,124 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2018-07-25 08:55:02,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-07-25 08:55:02,124 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 217 [2018-07-25 08:55:02,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:02,125 INFO L225 Difference]: With dead ends: 221 [2018-07-25 08:55:02,125 INFO L226 Difference]: Without dead ends: 220 [2018-07-25 08:55:02,126 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 08:55:02,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2018-07-25 08:55:02,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2018-07-25 08:55:02,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2018-07-25 08:55:02,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 220 transitions. [2018-07-25 08:55:02,131 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 220 transitions. Word has length 217 [2018-07-25 08:55:02,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:02,132 INFO L472 AbstractCegarLoop]: Abstraction has 220 states and 220 transitions. [2018-07-25 08:55:02,132 INFO L473 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-07-25 08:55:02,132 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 220 transitions. [2018-07-25 08:55:02,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-07-25 08:55:02,133 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:02,133 INFO L354 BasicCegarLoop]: trace histogram [109, 108, 1, 1] [2018-07-25 08:55:02,133 INFO L415 AbstractCegarLoop]: === Iteration 109 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:02,133 INFO L82 PathProgramCache]: Analyzing trace with hash -230930504, now seen corresponding path program 108 times [2018-07-25 08:55:02,133 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:02,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:02,598 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 08:55:02,598 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:02,598 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2018-07-25 08:55:02,599 INFO L451 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-07-25 08:55:02,600 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-07-25 08:55:02,600 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 08:55:02,601 INFO L87 Difference]: Start difference. First operand 220 states and 220 transitions. Second operand 111 states. [2018-07-25 08:55:02,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:02,785 INFO L93 Difference]: Finished difference Result 223 states and 223 transitions. [2018-07-25 08:55:02,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-07-25 08:55:02,785 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 219 [2018-07-25 08:55:02,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:02,786 INFO L225 Difference]: With dead ends: 223 [2018-07-25 08:55:02,786 INFO L226 Difference]: Without dead ends: 222 [2018-07-25 08:55:02,787 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 0 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 08:55:02,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-07-25 08:55:02,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2018-07-25 08:55:02,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2018-07-25 08:55:02,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 222 transitions. [2018-07-25 08:55:02,791 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 222 transitions. Word has length 219 [2018-07-25 08:55:02,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:02,792 INFO L472 AbstractCegarLoop]: Abstraction has 222 states and 222 transitions. [2018-07-25 08:55:02,792 INFO L473 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-07-25 08:55:02,792 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 222 transitions. [2018-07-25 08:55:02,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-07-25 08:55:02,792 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:02,792 INFO L354 BasicCegarLoop]: trace histogram [110, 109, 1, 1] [2018-07-25 08:55:02,793 INFO L415 AbstractCegarLoop]: === Iteration 110 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:02,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1414086138, now seen corresponding path program 109 times [2018-07-25 08:55:02,793 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:02,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:03,463 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 08:55:03,464 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:03,464 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110] total 110 [2018-07-25 08:55:03,464 INFO L451 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-07-25 08:55:03,465 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-07-25 08:55:03,465 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 08:55:03,465 INFO L87 Difference]: Start difference. First operand 222 states and 222 transitions. Second operand 112 states. [2018-07-25 08:55:03,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:03,611 INFO L93 Difference]: Finished difference Result 225 states and 225 transitions. [2018-07-25 08:55:03,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-07-25 08:55:03,612 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 221 [2018-07-25 08:55:03,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:03,612 INFO L225 Difference]: With dead ends: 225 [2018-07-25 08:55:03,612 INFO L226 Difference]: Without dead ends: 224 [2018-07-25 08:55:03,613 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 08:55:03,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2018-07-25 08:55:03,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2018-07-25 08:55:03,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2018-07-25 08:55:03,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 224 transitions. [2018-07-25 08:55:03,618 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 224 transitions. Word has length 221 [2018-07-25 08:55:03,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:03,619 INFO L472 AbstractCegarLoop]: Abstraction has 224 states and 224 transitions. [2018-07-25 08:55:03,619 INFO L473 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-07-25 08:55:03,619 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 224 transitions. [2018-07-25 08:55:03,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-07-25 08:55:03,620 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:03,620 INFO L354 BasicCegarLoop]: trace histogram [111, 110, 1, 1] [2018-07-25 08:55:03,620 INFO L415 AbstractCegarLoop]: === Iteration 111 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:03,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1727114172, now seen corresponding path program 110 times [2018-07-25 08:55:03,620 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:03,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:04,078 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 08:55:04,078 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:04,079 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111] total 111 [2018-07-25 08:55:04,079 INFO L451 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-07-25 08:55:04,080 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-07-25 08:55:04,080 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 08:55:04,081 INFO L87 Difference]: Start difference. First operand 224 states and 224 transitions. Second operand 113 states. [2018-07-25 08:55:04,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:04,247 INFO L93 Difference]: Finished difference Result 227 states and 227 transitions. [2018-07-25 08:55:04,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-07-25 08:55:04,247 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 223 [2018-07-25 08:55:04,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:04,248 INFO L225 Difference]: With dead ends: 227 [2018-07-25 08:55:04,248 INFO L226 Difference]: Without dead ends: 226 [2018-07-25 08:55:04,249 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 0 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 08:55:04,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-07-25 08:55:04,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2018-07-25 08:55:04,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2018-07-25 08:55:04,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 226 transitions. [2018-07-25 08:55:04,252 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 226 transitions. Word has length 223 [2018-07-25 08:55:04,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:04,253 INFO L472 AbstractCegarLoop]: Abstraction has 226 states and 226 transitions. [2018-07-25 08:55:04,253 INFO L473 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-07-25 08:55:04,253 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 226 transitions. [2018-07-25 08:55:04,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-07-25 08:55:04,254 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:04,254 INFO L354 BasicCegarLoop]: trace histogram [112, 111, 1, 1] [2018-07-25 08:55:04,254 INFO L415 AbstractCegarLoop]: === Iteration 112 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:04,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1899344126, now seen corresponding path program 111 times [2018-07-25 08:55:04,254 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:04,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:04,719 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 08:55:04,720 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:04,720 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112] total 112 [2018-07-25 08:55:04,720 INFO L451 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-07-25 08:55:04,721 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-07-25 08:55:04,722 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 08:55:04,722 INFO L87 Difference]: Start difference. First operand 226 states and 226 transitions. Second operand 114 states. [2018-07-25 08:55:04,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:04,881 INFO L93 Difference]: Finished difference Result 229 states and 229 transitions. [2018-07-25 08:55:04,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-07-25 08:55:04,881 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 225 [2018-07-25 08:55:04,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:04,882 INFO L225 Difference]: With dead ends: 229 [2018-07-25 08:55:04,882 INFO L226 Difference]: Without dead ends: 228 [2018-07-25 08:55:04,883 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 08:55:04,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-07-25 08:55:04,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2018-07-25 08:55:04,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2018-07-25 08:55:04,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 228 transitions. [2018-07-25 08:55:04,886 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 228 transitions. Word has length 225 [2018-07-25 08:55:04,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:04,886 INFO L472 AbstractCegarLoop]: Abstraction has 228 states and 228 transitions. [2018-07-25 08:55:04,886 INFO L473 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-07-25 08:55:04,887 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 228 transitions. [2018-07-25 08:55:04,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-07-25 08:55:04,887 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:04,887 INFO L354 BasicCegarLoop]: trace histogram [113, 112, 1, 1] [2018-07-25 08:55:04,887 INFO L415 AbstractCegarLoop]: === Iteration 113 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:04,888 INFO L82 PathProgramCache]: Analyzing trace with hash -91394624, now seen corresponding path program 112 times [2018-07-25 08:55:04,888 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:04,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:05,368 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 08:55:05,368 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:05,368 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113] total 113 [2018-07-25 08:55:05,369 INFO L451 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-07-25 08:55:05,370 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-07-25 08:55:05,370 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 08:55:05,370 INFO L87 Difference]: Start difference. First operand 228 states and 228 transitions. Second operand 115 states. [2018-07-25 08:55:05,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:05,535 INFO L93 Difference]: Finished difference Result 231 states and 231 transitions. [2018-07-25 08:55:05,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-07-25 08:55:05,535 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 227 [2018-07-25 08:55:05,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:05,536 INFO L225 Difference]: With dead ends: 231 [2018-07-25 08:55:05,536 INFO L226 Difference]: Without dead ends: 230 [2018-07-25 08:55:05,537 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 08:55:05,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2018-07-25 08:55:05,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2018-07-25 08:55:05,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2018-07-25 08:55:05,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 230 transitions. [2018-07-25 08:55:05,542 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 230 transitions. Word has length 227 [2018-07-25 08:55:05,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:05,542 INFO L472 AbstractCegarLoop]: Abstraction has 230 states and 230 transitions. [2018-07-25 08:55:05,542 INFO L473 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-07-25 08:55:05,542 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 230 transitions. [2018-07-25 08:55:05,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-07-25 08:55:05,543 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:05,543 INFO L354 BasicCegarLoop]: trace histogram [114, 113, 1, 1] [2018-07-25 08:55:05,543 INFO L415 AbstractCegarLoop]: === Iteration 114 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:05,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1930886654, now seen corresponding path program 113 times [2018-07-25 08:55:05,544 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:05,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:06,098 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 08:55:06,099 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:06,099 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114] total 114 [2018-07-25 08:55:06,099 INFO L451 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-07-25 08:55:06,101 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-07-25 08:55:06,101 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 08:55:06,101 INFO L87 Difference]: Start difference. First operand 230 states and 230 transitions. Second operand 116 states. [2018-07-25 08:55:06,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:06,289 INFO L93 Difference]: Finished difference Result 233 states and 233 transitions. [2018-07-25 08:55:06,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-07-25 08:55:06,289 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 229 [2018-07-25 08:55:06,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:06,290 INFO L225 Difference]: With dead ends: 233 [2018-07-25 08:55:06,318 INFO L226 Difference]: Without dead ends: 232 [2018-07-25 08:55:06,322 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 08:55:06,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2018-07-25 08:55:06,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2018-07-25 08:55:06,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2018-07-25 08:55:06,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 232 transitions. [2018-07-25 08:55:06,332 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 232 transitions. Word has length 229 [2018-07-25 08:55:06,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:06,333 INFO L472 AbstractCegarLoop]: Abstraction has 232 states and 232 transitions. [2018-07-25 08:55:06,333 INFO L473 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-07-25 08:55:06,333 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 232 transitions. [2018-07-25 08:55:06,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-07-25 08:55:06,334 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:06,334 INFO L354 BasicCegarLoop]: trace histogram [115, 114, 1, 1] [2018-07-25 08:55:06,334 INFO L415 AbstractCegarLoop]: === Iteration 115 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:06,335 INFO L82 PathProgramCache]: Analyzing trace with hash -156201532, now seen corresponding path program 114 times [2018-07-25 08:55:06,335 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:06,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:06,875 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 08:55:06,875 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:06,875 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115] total 115 [2018-07-25 08:55:06,876 INFO L451 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-07-25 08:55:06,877 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-07-25 08:55:06,878 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 08:55:06,878 INFO L87 Difference]: Start difference. First operand 232 states and 232 transitions. Second operand 117 states. [2018-07-25 08:55:07,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:07,117 INFO L93 Difference]: Finished difference Result 235 states and 235 transitions. [2018-07-25 08:55:07,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-07-25 08:55:07,117 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 231 [2018-07-25 08:55:07,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:07,118 INFO L225 Difference]: With dead ends: 235 [2018-07-25 08:55:07,118 INFO L226 Difference]: Without dead ends: 234 [2018-07-25 08:55:07,119 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 08:55:07,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-07-25 08:55:07,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2018-07-25 08:55:07,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2018-07-25 08:55:07,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 234 transitions. [2018-07-25 08:55:07,124 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 234 transitions. Word has length 231 [2018-07-25 08:55:07,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:07,125 INFO L472 AbstractCegarLoop]: Abstraction has 234 states and 234 transitions. [2018-07-25 08:55:07,125 INFO L473 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-07-25 08:55:07,125 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 234 transitions. [2018-07-25 08:55:07,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-07-25 08:55:07,126 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:07,126 INFO L354 BasicCegarLoop]: trace histogram [116, 115, 1, 1] [2018-07-25 08:55:07,126 INFO L415 AbstractCegarLoop]: === Iteration 116 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:07,126 INFO L82 PathProgramCache]: Analyzing trace with hash 214184198, now seen corresponding path program 115 times [2018-07-25 08:55:07,126 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:07,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:07,754 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 08:55:07,754 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:07,755 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116] total 116 [2018-07-25 08:55:07,755 INFO L451 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-07-25 08:55:07,756 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-07-25 08:55:07,756 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 08:55:07,757 INFO L87 Difference]: Start difference. First operand 234 states and 234 transitions. Second operand 118 states. [2018-07-25 08:55:08,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:08,015 INFO L93 Difference]: Finished difference Result 237 states and 237 transitions. [2018-07-25 08:55:08,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-07-25 08:55:08,016 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 233 [2018-07-25 08:55:08,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:08,016 INFO L225 Difference]: With dead ends: 237 [2018-07-25 08:55:08,016 INFO L226 Difference]: Without dead ends: 236 [2018-07-25 08:55:08,017 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 08:55:08,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2018-07-25 08:55:08,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2018-07-25 08:55:08,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2018-07-25 08:55:08,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 236 transitions. [2018-07-25 08:55:08,021 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 236 transitions. Word has length 233 [2018-07-25 08:55:08,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:08,021 INFO L472 AbstractCegarLoop]: Abstraction has 236 states and 236 transitions. [2018-07-25 08:55:08,021 INFO L473 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-07-25 08:55:08,021 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 236 transitions. [2018-07-25 08:55:08,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-07-25 08:55:08,022 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:08,022 INFO L354 BasicCegarLoop]: trace histogram [117, 116, 1, 1] [2018-07-25 08:55:08,022 INFO L415 AbstractCegarLoop]: === Iteration 117 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:08,022 INFO L82 PathProgramCache]: Analyzing trace with hash -327414840, now seen corresponding path program 116 times [2018-07-25 08:55:08,022 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:08,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:08,602 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 08:55:08,602 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:08,602 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117] total 117 [2018-07-25 08:55:08,603 INFO L451 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-07-25 08:55:08,604 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-07-25 08:55:08,604 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 08:55:08,604 INFO L87 Difference]: Start difference. First operand 236 states and 236 transitions. Second operand 119 states. [2018-07-25 08:55:08,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:08,720 INFO L93 Difference]: Finished difference Result 239 states and 239 transitions. [2018-07-25 08:55:08,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-07-25 08:55:08,720 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 235 [2018-07-25 08:55:08,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:08,721 INFO L225 Difference]: With dead ends: 239 [2018-07-25 08:55:08,721 INFO L226 Difference]: Without dead ends: 238 [2018-07-25 08:55:08,722 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 08:55:08,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2018-07-25 08:55:08,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2018-07-25 08:55:08,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2018-07-25 08:55:08,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 238 transitions. [2018-07-25 08:55:08,725 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 238 transitions. Word has length 235 [2018-07-25 08:55:08,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:08,726 INFO L472 AbstractCegarLoop]: Abstraction has 238 states and 238 transitions. [2018-07-25 08:55:08,726 INFO L473 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-07-25 08:55:08,726 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 238 transitions. [2018-07-25 08:55:08,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-07-25 08:55:08,727 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:08,727 INFO L354 BasicCegarLoop]: trace histogram [118, 117, 1, 1] [2018-07-25 08:55:08,727 INFO L415 AbstractCegarLoop]: === Iteration 118 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:08,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1113047542, now seen corresponding path program 117 times [2018-07-25 08:55:08,727 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:08,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:09,279 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 08:55:09,280 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:09,280 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118] total 118 [2018-07-25 08:55:09,280 INFO L451 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-07-25 08:55:09,281 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-07-25 08:55:09,282 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 08:55:09,282 INFO L87 Difference]: Start difference. First operand 238 states and 238 transitions. Second operand 120 states. [2018-07-25 08:55:09,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:09,508 INFO L93 Difference]: Finished difference Result 241 states and 241 transitions. [2018-07-25 08:55:09,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-07-25 08:55:09,508 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 237 [2018-07-25 08:55:09,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:09,509 INFO L225 Difference]: With dead ends: 241 [2018-07-25 08:55:09,509 INFO L226 Difference]: Without dead ends: 240 [2018-07-25 08:55:09,510 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 08:55:09,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2018-07-25 08:55:09,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2018-07-25 08:55:09,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2018-07-25 08:55:09,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 240 transitions. [2018-07-25 08:55:09,515 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 240 transitions. Word has length 237 [2018-07-25 08:55:09,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:09,516 INFO L472 AbstractCegarLoop]: Abstraction has 240 states and 240 transitions. [2018-07-25 08:55:09,516 INFO L473 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-07-25 08:55:09,516 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 240 transitions. [2018-07-25 08:55:09,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2018-07-25 08:55:09,517 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:09,517 INFO L354 BasicCegarLoop]: trace histogram [119, 118, 1, 1] [2018-07-25 08:55:09,517 INFO L415 AbstractCegarLoop]: === Iteration 119 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:09,517 INFO L82 PathProgramCache]: Analyzing trace with hash -191830068, now seen corresponding path program 118 times [2018-07-25 08:55:09,517 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:09,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:10,274 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 08:55:10,275 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:10,275 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119] total 119 [2018-07-25 08:55:10,275 INFO L451 AbstractCegarLoop]: Interpolant automaton has 121 states [2018-07-25 08:55:10,276 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2018-07-25 08:55:10,276 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2018-07-25 08:55:10,276 INFO L87 Difference]: Start difference. First operand 240 states and 240 transitions. Second operand 121 states. [2018-07-25 08:55:10,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:10,544 INFO L93 Difference]: Finished difference Result 243 states and 243 transitions. [2018-07-25 08:55:10,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-07-25 08:55:10,545 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 239 [2018-07-25 08:55:10,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:10,545 INFO L225 Difference]: With dead ends: 243 [2018-07-25 08:55:10,546 INFO L226 Difference]: Without dead ends: 242 [2018-07-25 08:55:10,547 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2018-07-25 08:55:10,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2018-07-25 08:55:10,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2018-07-25 08:55:10,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2018-07-25 08:55:10,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 242 transitions. [2018-07-25 08:55:10,552 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 242 transitions. Word has length 239 [2018-07-25 08:55:10,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:10,553 INFO L472 AbstractCegarLoop]: Abstraction has 242 states and 242 transitions. [2018-07-25 08:55:10,553 INFO L473 AbstractCegarLoop]: Interpolant automaton has 121 states. [2018-07-25 08:55:10,553 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 242 transitions. [2018-07-25 08:55:10,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-07-25 08:55:10,554 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:10,554 INFO L354 BasicCegarLoop]: trace histogram [120, 119, 1, 1] [2018-07-25 08:55:10,554 INFO L415 AbstractCegarLoop]: === Iteration 120 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:10,555 INFO L82 PathProgramCache]: Analyzing trace with hash 334899470, now seen corresponding path program 119 times [2018-07-25 08:55:10,555 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:10,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:11,369 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 08:55:11,370 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:11,370 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120] total 120 [2018-07-25 08:55:11,370 INFO L451 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-07-25 08:55:11,372 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-07-25 08:55:11,372 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 08:55:11,372 INFO L87 Difference]: Start difference. First operand 242 states and 242 transitions. Second operand 122 states. [2018-07-25 08:55:11,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:11,604 INFO L93 Difference]: Finished difference Result 245 states and 245 transitions. [2018-07-25 08:55:11,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-07-25 08:55:11,604 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 241 [2018-07-25 08:55:11,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:11,605 INFO L225 Difference]: With dead ends: 245 [2018-07-25 08:55:11,605 INFO L226 Difference]: Without dead ends: 244 [2018-07-25 08:55:11,606 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 08:55:11,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2018-07-25 08:55:11,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2018-07-25 08:55:11,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2018-07-25 08:55:11,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 244 transitions. [2018-07-25 08:55:11,609 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 244 transitions. Word has length 241 [2018-07-25 08:55:11,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:11,610 INFO L472 AbstractCegarLoop]: Abstraction has 244 states and 244 transitions. [2018-07-25 08:55:11,610 INFO L473 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-07-25 08:55:11,610 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 244 transitions. [2018-07-25 08:55:11,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-07-25 08:55:11,610 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:11,611 INFO L354 BasicCegarLoop]: trace histogram [121, 120, 1, 1] [2018-07-25 08:55:11,611 INFO L415 AbstractCegarLoop]: === Iteration 121 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:11,611 INFO L82 PathProgramCache]: Analyzing trace with hash -284155440, now seen corresponding path program 120 times [2018-07-25 08:55:11,611 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:11,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:12,145 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 08:55:12,146 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:12,146 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121] total 121 [2018-07-25 08:55:12,146 INFO L451 AbstractCegarLoop]: Interpolant automaton has 123 states [2018-07-25 08:55:12,147 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2018-07-25 08:55:12,148 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2018-07-25 08:55:12,148 INFO L87 Difference]: Start difference. First operand 244 states and 244 transitions. Second operand 123 states. [2018-07-25 08:55:12,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:12,274 INFO L93 Difference]: Finished difference Result 247 states and 247 transitions. [2018-07-25 08:55:12,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-07-25 08:55:12,274 INFO L78 Accepts]: Start accepts. Automaton has 123 states. Word has length 243 [2018-07-25 08:55:12,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:12,274 INFO L225 Difference]: With dead ends: 247 [2018-07-25 08:55:12,275 INFO L226 Difference]: Without dead ends: 246 [2018-07-25 08:55:12,275 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2018-07-25 08:55:12,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2018-07-25 08:55:12,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2018-07-25 08:55:12,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2018-07-25 08:55:12,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 246 transitions. [2018-07-25 08:55:12,280 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 246 transitions. Word has length 243 [2018-07-25 08:55:12,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:12,280 INFO L472 AbstractCegarLoop]: Abstraction has 246 states and 246 transitions. [2018-07-25 08:55:12,280 INFO L473 AbstractCegarLoop]: Interpolant automaton has 123 states. [2018-07-25 08:55:12,280 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 246 transitions. [2018-07-25 08:55:12,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2018-07-25 08:55:12,281 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:12,281 INFO L354 BasicCegarLoop]: trace histogram [122, 121, 1, 1] [2018-07-25 08:55:12,281 INFO L415 AbstractCegarLoop]: === Iteration 122 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:12,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1804530194, now seen corresponding path program 121 times [2018-07-25 08:55:12,282 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:12,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:12,853 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 08:55:12,853 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:12,854 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [122] total 122 [2018-07-25 08:55:12,854 INFO L451 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-07-25 08:55:12,855 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-07-25 08:55:12,856 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 08:55:12,856 INFO L87 Difference]: Start difference. First operand 246 states and 246 transitions. Second operand 124 states. [2018-07-25 08:55:13,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:13,151 INFO L93 Difference]: Finished difference Result 249 states and 249 transitions. [2018-07-25 08:55:13,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-07-25 08:55:13,151 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 245 [2018-07-25 08:55:13,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:13,152 INFO L225 Difference]: With dead ends: 249 [2018-07-25 08:55:13,152 INFO L226 Difference]: Without dead ends: 248 [2018-07-25 08:55:13,153 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 08:55:13,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-07-25 08:55:13,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2018-07-25 08:55:13,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2018-07-25 08:55:13,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 248 transitions. [2018-07-25 08:55:13,157 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 248 transitions. Word has length 245 [2018-07-25 08:55:13,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:13,158 INFO L472 AbstractCegarLoop]: Abstraction has 248 states and 248 transitions. [2018-07-25 08:55:13,158 INFO L473 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-07-25 08:55:13,158 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 248 transitions. [2018-07-25 08:55:13,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-07-25 08:55:13,159 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:13,159 INFO L354 BasicCegarLoop]: trace histogram [123, 122, 1, 1] [2018-07-25 08:55:13,159 INFO L415 AbstractCegarLoop]: === Iteration 123 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:13,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1013270060, now seen corresponding path program 122 times [2018-07-25 08:55:13,160 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:13,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:13,827 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 08:55:13,828 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:13,828 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123] total 123 [2018-07-25 08:55:13,828 INFO L451 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-07-25 08:55:13,829 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-07-25 08:55:13,830 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2018-07-25 08:55:13,830 INFO L87 Difference]: Start difference. First operand 248 states and 248 transitions. Second operand 125 states. [2018-07-25 08:55:14,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:14,104 INFO L93 Difference]: Finished difference Result 251 states and 251 transitions. [2018-07-25 08:55:14,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-07-25 08:55:14,104 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 247 [2018-07-25 08:55:14,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:14,105 INFO L225 Difference]: With dead ends: 251 [2018-07-25 08:55:14,105 INFO L226 Difference]: Without dead ends: 250 [2018-07-25 08:55:14,105 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2018-07-25 08:55:14,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2018-07-25 08:55:14,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2018-07-25 08:55:14,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2018-07-25 08:55:14,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 250 transitions. [2018-07-25 08:55:14,110 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 250 transitions. Word has length 247 [2018-07-25 08:55:14,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:14,111 INFO L472 AbstractCegarLoop]: Abstraction has 250 states and 250 transitions. [2018-07-25 08:55:14,111 INFO L473 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-07-25 08:55:14,111 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 250 transitions. [2018-07-25 08:55:14,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-07-25 08:55:14,112 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:14,112 INFO L354 BasicCegarLoop]: trace histogram [124, 123, 1, 1] [2018-07-25 08:55:14,112 INFO L415 AbstractCegarLoop]: === Iteration 124 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:14,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1205049622, now seen corresponding path program 123 times [2018-07-25 08:55:14,113 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:14,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:14,790 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 08:55:14,790 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:14,790 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [124] total 124 [2018-07-25 08:55:14,790 INFO L451 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-07-25 08:55:14,792 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-07-25 08:55:14,793 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7875, Invalid=7875, Unknown=0, NotChecked=0, Total=15750 [2018-07-25 08:55:14,793 INFO L87 Difference]: Start difference. First operand 250 states and 250 transitions. Second operand 126 states. [2018-07-25 08:55:14,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:14,955 INFO L93 Difference]: Finished difference Result 253 states and 253 transitions. [2018-07-25 08:55:14,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-07-25 08:55:14,955 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 249 [2018-07-25 08:55:14,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:14,956 INFO L225 Difference]: With dead ends: 253 [2018-07-25 08:55:14,956 INFO L226 Difference]: Without dead ends: 252 [2018-07-25 08:55:14,957 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7875, Invalid=7875, Unknown=0, NotChecked=0, Total=15750 [2018-07-25 08:55:14,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2018-07-25 08:55:14,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2018-07-25 08:55:14,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2018-07-25 08:55:14,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 252 transitions. [2018-07-25 08:55:14,961 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 252 transitions. Word has length 249 [2018-07-25 08:55:14,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:14,961 INFO L472 AbstractCegarLoop]: Abstraction has 252 states and 252 transitions. [2018-07-25 08:55:14,961 INFO L473 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-07-25 08:55:14,961 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 252 transitions. [2018-07-25 08:55:14,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-07-25 08:55:14,962 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:14,962 INFO L354 BasicCegarLoop]: trace histogram [125, 124, 1, 1] [2018-07-25 08:55:14,962 INFO L415 AbstractCegarLoop]: === Iteration 125 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:14,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1588482088, now seen corresponding path program 124 times [2018-07-25 08:55:14,962 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:15,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:15,628 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 08:55:15,628 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:15,628 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125] total 125 [2018-07-25 08:55:15,629 INFO L451 AbstractCegarLoop]: Interpolant automaton has 127 states [2018-07-25 08:55:15,630 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2018-07-25 08:55:15,631 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2018-07-25 08:55:15,631 INFO L87 Difference]: Start difference. First operand 252 states and 252 transitions. Second operand 127 states. [2018-07-25 08:55:15,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:15,928 INFO L93 Difference]: Finished difference Result 255 states and 255 transitions. [2018-07-25 08:55:15,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-07-25 08:55:15,928 INFO L78 Accepts]: Start accepts. Automaton has 127 states. Word has length 251 [2018-07-25 08:55:15,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:15,928 INFO L225 Difference]: With dead ends: 255 [2018-07-25 08:55:15,928 INFO L226 Difference]: Without dead ends: 254 [2018-07-25 08:55:15,930 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2018-07-25 08:55:15,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2018-07-25 08:55:15,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2018-07-25 08:55:15,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2018-07-25 08:55:15,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 254 transitions. [2018-07-25 08:55:15,933 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 254 transitions. Word has length 251 [2018-07-25 08:55:15,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:15,934 INFO L472 AbstractCegarLoop]: Abstraction has 254 states and 254 transitions. [2018-07-25 08:55:15,934 INFO L473 AbstractCegarLoop]: Interpolant automaton has 127 states. [2018-07-25 08:55:15,934 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 254 transitions. [2018-07-25 08:55:15,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-07-25 08:55:15,935 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:15,935 INFO L354 BasicCegarLoop]: trace histogram [126, 125, 1, 1] [2018-07-25 08:55:15,935 INFO L415 AbstractCegarLoop]: === Iteration 126 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:15,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1817895398, now seen corresponding path program 125 times [2018-07-25 08:55:15,935 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:15,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:16,554 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 08:55:16,554 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:16,555 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [126] total 126 [2018-07-25 08:55:16,555 INFO L451 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-07-25 08:55:16,557 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-07-25 08:55:16,557 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 08:55:16,558 INFO L87 Difference]: Start difference. First operand 254 states and 254 transitions. Second operand 128 states. [2018-07-25 08:55:16,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:16,689 INFO L93 Difference]: Finished difference Result 257 states and 257 transitions. [2018-07-25 08:55:16,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-07-25 08:55:16,689 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 253 [2018-07-25 08:55:16,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:16,690 INFO L225 Difference]: With dead ends: 257 [2018-07-25 08:55:16,690 INFO L226 Difference]: Without dead ends: 256 [2018-07-25 08:55:16,691 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 08:55:16,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2018-07-25 08:55:16,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2018-07-25 08:55:16,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2018-07-25 08:55:16,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 256 transitions. [2018-07-25 08:55:16,697 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 256 transitions. Word has length 253 [2018-07-25 08:55:16,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:16,697 INFO L472 AbstractCegarLoop]: Abstraction has 256 states and 256 transitions. [2018-07-25 08:55:16,697 INFO L473 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-07-25 08:55:16,698 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 256 transitions. [2018-07-25 08:55:16,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2018-07-25 08:55:16,699 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:16,699 INFO L354 BasicCegarLoop]: trace histogram [127, 126, 1, 1] [2018-07-25 08:55:16,699 INFO L415 AbstractCegarLoop]: === Iteration 127 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:16,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1054213084, now seen corresponding path program 126 times [2018-07-25 08:55:16,699 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:16,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:17,422 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 08:55:17,422 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:17,423 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127] total 127 [2018-07-25 08:55:17,423 INFO L451 AbstractCegarLoop]: Interpolant automaton has 129 states [2018-07-25 08:55:17,425 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2018-07-25 08:55:17,425 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2018-07-25 08:55:17,426 INFO L87 Difference]: Start difference. First operand 256 states and 256 transitions. Second operand 129 states. [2018-07-25 08:55:17,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:17,737 INFO L93 Difference]: Finished difference Result 259 states and 259 transitions. [2018-07-25 08:55:17,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-07-25 08:55:17,738 INFO L78 Accepts]: Start accepts. Automaton has 129 states. Word has length 255 [2018-07-25 08:55:17,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:17,738 INFO L225 Difference]: With dead ends: 259 [2018-07-25 08:55:17,738 INFO L226 Difference]: Without dead ends: 258 [2018-07-25 08:55:17,739 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2018-07-25 08:55:17,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-07-25 08:55:17,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2018-07-25 08:55:17,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2018-07-25 08:55:17,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 258 transitions. [2018-07-25 08:55:17,747 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 258 transitions. Word has length 255 [2018-07-25 08:55:17,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:17,747 INFO L472 AbstractCegarLoop]: Abstraction has 258 states and 258 transitions. [2018-07-25 08:55:17,748 INFO L473 AbstractCegarLoop]: Interpolant automaton has 129 states. [2018-07-25 08:55:17,748 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 258 transitions. [2018-07-25 08:55:17,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-07-25 08:55:17,749 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:17,749 INFO L354 BasicCegarLoop]: trace histogram [128, 127, 1, 1] [2018-07-25 08:55:17,750 INFO L415 AbstractCegarLoop]: === Iteration 128 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:17,750 INFO L82 PathProgramCache]: Analyzing trace with hash -513507042, now seen corresponding path program 127 times [2018-07-25 08:55:17,750 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:17,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:18,384 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 08:55:18,384 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:18,385 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [128] total 128 [2018-07-25 08:55:18,385 INFO L451 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-07-25 08:55:18,387 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-07-25 08:55:18,388 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8385, Invalid=8385, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 08:55:18,388 INFO L87 Difference]: Start difference. First operand 258 states and 258 transitions. Second operand 130 states. [2018-07-25 08:55:18,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:18,521 INFO L93 Difference]: Finished difference Result 261 states and 261 transitions. [2018-07-25 08:55:18,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-07-25 08:55:18,521 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 257 [2018-07-25 08:55:18,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:18,522 INFO L225 Difference]: With dead ends: 261 [2018-07-25 08:55:18,522 INFO L226 Difference]: Without dead ends: 260 [2018-07-25 08:55:18,523 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=8385, Invalid=8385, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 08:55:18,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2018-07-25 08:55:18,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2018-07-25 08:55:18,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2018-07-25 08:55:18,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 260 transitions. [2018-07-25 08:55:18,528 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 260 transitions. Word has length 257 [2018-07-25 08:55:18,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:18,529 INFO L472 AbstractCegarLoop]: Abstraction has 260 states and 260 transitions. [2018-07-25 08:55:18,529 INFO L473 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-07-25 08:55:18,529 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 260 transitions. [2018-07-25 08:55:18,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2018-07-25 08:55:18,530 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:18,530 INFO L354 BasicCegarLoop]: trace histogram [129, 128, 1, 1] [2018-07-25 08:55:18,531 INFO L415 AbstractCegarLoop]: === Iteration 129 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:18,531 INFO L82 PathProgramCache]: Analyzing trace with hash 440972768, now seen corresponding path program 128 times [2018-07-25 08:55:18,531 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:18,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:19,131 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 08:55:19,132 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:19,132 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129] total 129 [2018-07-25 08:55:19,132 INFO L451 AbstractCegarLoop]: Interpolant automaton has 131 states [2018-07-25 08:55:19,134 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2018-07-25 08:55:19,134 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8515, Invalid=8515, Unknown=0, NotChecked=0, Total=17030 [2018-07-25 08:55:19,135 INFO L87 Difference]: Start difference. First operand 260 states and 260 transitions. Second operand 131 states. [2018-07-25 08:55:19,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:19,446 INFO L93 Difference]: Finished difference Result 263 states and 263 transitions. [2018-07-25 08:55:19,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-07-25 08:55:19,447 INFO L78 Accepts]: Start accepts. Automaton has 131 states. Word has length 259 [2018-07-25 08:55:19,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:19,447 INFO L225 Difference]: With dead ends: 263 [2018-07-25 08:55:19,447 INFO L226 Difference]: Without dead ends: 262 [2018-07-25 08:55:19,449 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=8515, Invalid=8515, Unknown=0, NotChecked=0, Total=17030 [2018-07-25 08:55:19,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2018-07-25 08:55:19,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2018-07-25 08:55:19,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2018-07-25 08:55:19,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 262 transitions. [2018-07-25 08:55:19,452 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 262 transitions. Word has length 259 [2018-07-25 08:55:19,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:19,452 INFO L472 AbstractCegarLoop]: Abstraction has 262 states and 262 transitions. [2018-07-25 08:55:19,453 INFO L473 AbstractCegarLoop]: Interpolant automaton has 131 states. [2018-07-25 08:55:19,453 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 262 transitions. [2018-07-25 08:55:19,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2018-07-25 08:55:19,453 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:19,453 INFO L354 BasicCegarLoop]: trace histogram [130, 129, 1, 1] [2018-07-25 08:55:19,454 INFO L415 AbstractCegarLoop]: === Iteration 130 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:19,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1426931166, now seen corresponding path program 129 times [2018-07-25 08:55:19,454 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:19,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:20,119 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 08:55:20,119 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:20,119 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [130] total 130 [2018-07-25 08:55:20,119 INFO L451 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-07-25 08:55:20,121 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-07-25 08:55:20,121 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8646, Invalid=8646, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 08:55:20,122 INFO L87 Difference]: Start difference. First operand 262 states and 262 transitions. Second operand 132 states. [2018-07-25 08:55:20,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:20,516 INFO L93 Difference]: Finished difference Result 265 states and 265 transitions. [2018-07-25 08:55:20,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-07-25 08:55:20,516 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 261 [2018-07-25 08:55:20,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:20,516 INFO L225 Difference]: With dead ends: 265 [2018-07-25 08:55:20,517 INFO L226 Difference]: Without dead ends: 264 [2018-07-25 08:55:20,518 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=8646, Invalid=8646, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 08:55:20,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2018-07-25 08:55:20,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2018-07-25 08:55:20,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2018-07-25 08:55:20,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 264 transitions. [2018-07-25 08:55:20,522 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 264 transitions. Word has length 261 [2018-07-25 08:55:20,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:20,523 INFO L472 AbstractCegarLoop]: Abstraction has 264 states and 264 transitions. [2018-07-25 08:55:20,523 INFO L473 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-07-25 08:55:20,523 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 264 transitions. [2018-07-25 08:55:20,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-07-25 08:55:20,524 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:20,524 INFO L354 BasicCegarLoop]: trace histogram [131, 130, 1, 1] [2018-07-25 08:55:20,525 INFO L415 AbstractCegarLoop]: === Iteration 131 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:20,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1186282012, now seen corresponding path program 130 times [2018-07-25 08:55:20,525 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:20,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:21,291 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 08:55:21,291 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:21,291 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131] total 131 [2018-07-25 08:55:21,291 INFO L451 AbstractCegarLoop]: Interpolant automaton has 133 states [2018-07-25 08:55:21,293 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2018-07-25 08:55:21,293 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8778, Invalid=8778, Unknown=0, NotChecked=0, Total=17556 [2018-07-25 08:55:21,294 INFO L87 Difference]: Start difference. First operand 264 states and 264 transitions. Second operand 133 states. [2018-07-25 08:55:21,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:21,608 INFO L93 Difference]: Finished difference Result 267 states and 267 transitions. [2018-07-25 08:55:21,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-07-25 08:55:21,609 INFO L78 Accepts]: Start accepts. Automaton has 133 states. Word has length 263 [2018-07-25 08:55:21,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:21,609 INFO L225 Difference]: With dead ends: 267 [2018-07-25 08:55:21,609 INFO L226 Difference]: Without dead ends: 266 [2018-07-25 08:55:21,611 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=8778, Invalid=8778, Unknown=0, NotChecked=0, Total=17556 [2018-07-25 08:55:21,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2018-07-25 08:55:21,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2018-07-25 08:55:21,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2018-07-25 08:55:21,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 266 transitions. [2018-07-25 08:55:21,616 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 266 transitions. Word has length 263 [2018-07-25 08:55:21,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:21,617 INFO L472 AbstractCegarLoop]: Abstraction has 266 states and 266 transitions. [2018-07-25 08:55:21,617 INFO L473 AbstractCegarLoop]: Interpolant automaton has 133 states. [2018-07-25 08:55:21,617 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 266 transitions. [2018-07-25 08:55:21,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2018-07-25 08:55:21,618 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:21,618 INFO L354 BasicCegarLoop]: trace histogram [132, 131, 1, 1] [2018-07-25 08:55:21,618 INFO L415 AbstractCegarLoop]: === Iteration 132 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:21,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1850679002, now seen corresponding path program 131 times [2018-07-25 08:55:21,619 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:21,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:22,375 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 08:55:22,376 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:22,376 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [132] total 132 [2018-07-25 08:55:22,376 INFO L451 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-07-25 08:55:22,378 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-07-25 08:55:22,378 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8911, Invalid=8911, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 08:55:22,379 INFO L87 Difference]: Start difference. First operand 266 states and 266 transitions. Second operand 134 states. [2018-07-25 08:55:22,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:22,733 INFO L93 Difference]: Finished difference Result 269 states and 269 transitions. [2018-07-25 08:55:22,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-07-25 08:55:22,734 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 265 [2018-07-25 08:55:22,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:22,734 INFO L225 Difference]: With dead ends: 269 [2018-07-25 08:55:22,734 INFO L226 Difference]: Without dead ends: 268 [2018-07-25 08:55:22,735 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=8911, Invalid=8911, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 08:55:22,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2018-07-25 08:55:22,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2018-07-25 08:55:22,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2018-07-25 08:55:22,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 268 transitions. [2018-07-25 08:55:22,738 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 268 transitions. Word has length 265 [2018-07-25 08:55:22,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:22,739 INFO L472 AbstractCegarLoop]: Abstraction has 268 states and 268 transitions. [2018-07-25 08:55:22,739 INFO L473 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-07-25 08:55:22,739 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 268 transitions. [2018-07-25 08:55:22,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2018-07-25 08:55:22,740 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:22,740 INFO L354 BasicCegarLoop]: trace histogram [133, 132, 1, 1] [2018-07-25 08:55:22,740 INFO L415 AbstractCegarLoop]: === Iteration 133 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:22,740 INFO L82 PathProgramCache]: Analyzing trace with hash -386059288, now seen corresponding path program 132 times [2018-07-25 08:55:22,740 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:22,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:23,495 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 08:55:23,495 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:23,496 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [133] total 133 [2018-07-25 08:55:23,496 INFO L451 AbstractCegarLoop]: Interpolant automaton has 135 states [2018-07-25 08:55:23,497 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2018-07-25 08:55:23,498 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9045, Invalid=9045, Unknown=0, NotChecked=0, Total=18090 [2018-07-25 08:55:23,498 INFO L87 Difference]: Start difference. First operand 268 states and 268 transitions. Second operand 135 states. [2018-07-25 08:55:23,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:23,996 INFO L93 Difference]: Finished difference Result 271 states and 271 transitions. [2018-07-25 08:55:23,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2018-07-25 08:55:23,996 INFO L78 Accepts]: Start accepts. Automaton has 135 states. Word has length 267 [2018-07-25 08:55:23,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:23,997 INFO L225 Difference]: With dead ends: 271 [2018-07-25 08:55:23,997 INFO L226 Difference]: Without dead ends: 270 [2018-07-25 08:55:23,998 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9045, Invalid=9045, Unknown=0, NotChecked=0, Total=18090 [2018-07-25 08:55:23,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2018-07-25 08:55:24,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2018-07-25 08:55:24,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2018-07-25 08:55:24,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 270 transitions. [2018-07-25 08:55:24,002 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 270 transitions. Word has length 267 [2018-07-25 08:55:24,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:24,002 INFO L472 AbstractCegarLoop]: Abstraction has 270 states and 270 transitions. [2018-07-25 08:55:24,002 INFO L473 AbstractCegarLoop]: Interpolant automaton has 135 states. [2018-07-25 08:55:24,003 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 270 transitions. [2018-07-25 08:55:24,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2018-07-25 08:55:24,004 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:24,004 INFO L354 BasicCegarLoop]: trace histogram [134, 133, 1, 1] [2018-07-25 08:55:24,004 INFO L415 AbstractCegarLoop]: === Iteration 134 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:24,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1635787222, now seen corresponding path program 133 times [2018-07-25 08:55:24,005 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:24,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:24,799 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 08:55:24,800 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:24,800 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [134] total 134 [2018-07-25 08:55:24,800 INFO L451 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-07-25 08:55:24,802 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-07-25 08:55:24,803 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9180, Invalid=9180, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 08:55:24,803 INFO L87 Difference]: Start difference. First operand 270 states and 270 transitions. Second operand 136 states. [2018-07-25 08:55:24,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:24,997 INFO L93 Difference]: Finished difference Result 273 states and 273 transitions. [2018-07-25 08:55:24,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-07-25 08:55:24,997 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 269 [2018-07-25 08:55:24,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:24,998 INFO L225 Difference]: With dead ends: 273 [2018-07-25 08:55:24,998 INFO L226 Difference]: Without dead ends: 272 [2018-07-25 08:55:24,999 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9180, Invalid=9180, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 08:55:24,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2018-07-25 08:55:25,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2018-07-25 08:55:25,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2018-07-25 08:55:25,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 272 transitions. [2018-07-25 08:55:25,003 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 272 transitions. Word has length 269 [2018-07-25 08:55:25,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:25,004 INFO L472 AbstractCegarLoop]: Abstraction has 272 states and 272 transitions. [2018-07-25 08:55:25,004 INFO L473 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-07-25 08:55:25,004 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 272 transitions. [2018-07-25 08:55:25,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2018-07-25 08:55:25,005 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:25,005 INFO L354 BasicCegarLoop]: trace histogram [135, 134, 1, 1] [2018-07-25 08:55:25,005 INFO L415 AbstractCegarLoop]: === Iteration 135 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:25,006 INFO L82 PathProgramCache]: Analyzing trace with hash -33488916, now seen corresponding path program 134 times [2018-07-25 08:55:25,006 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:25,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:25,818 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 08:55:25,818 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:25,818 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [135] total 135 [2018-07-25 08:55:25,818 INFO L451 AbstractCegarLoop]: Interpolant automaton has 137 states [2018-07-25 08:55:25,819 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2018-07-25 08:55:25,819 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9316, Invalid=9316, Unknown=0, NotChecked=0, Total=18632 [2018-07-25 08:55:25,820 INFO L87 Difference]: Start difference. First operand 272 states and 272 transitions. Second operand 137 states. [2018-07-25 08:55:26,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:26,198 INFO L93 Difference]: Finished difference Result 275 states and 275 transitions. [2018-07-25 08:55:26,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-07-25 08:55:26,198 INFO L78 Accepts]: Start accepts. Automaton has 137 states. Word has length 271 [2018-07-25 08:55:26,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:26,199 INFO L225 Difference]: With dead ends: 275 [2018-07-25 08:55:26,199 INFO L226 Difference]: Without dead ends: 274 [2018-07-25 08:55:26,200 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9316, Invalid=9316, Unknown=0, NotChecked=0, Total=18632 [2018-07-25 08:55:26,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2018-07-25 08:55:26,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2018-07-25 08:55:26,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2018-07-25 08:55:26,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 274 transitions. [2018-07-25 08:55:26,205 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 274 transitions. Word has length 271 [2018-07-25 08:55:26,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:26,206 INFO L472 AbstractCegarLoop]: Abstraction has 274 states and 274 transitions. [2018-07-25 08:55:26,206 INFO L473 AbstractCegarLoop]: Interpolant automaton has 137 states. [2018-07-25 08:55:26,206 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 274 transitions. [2018-07-25 08:55:26,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-07-25 08:55:26,207 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:26,207 INFO L354 BasicCegarLoop]: trace histogram [136, 135, 1, 1] [2018-07-25 08:55:26,207 INFO L415 AbstractCegarLoop]: === Iteration 136 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:26,208 INFO L82 PathProgramCache]: Analyzing trace with hash -2118076114, now seen corresponding path program 135 times [2018-07-25 08:55:26,208 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:26,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:27,154 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 08:55:27,154 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:27,154 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [136] total 136 [2018-07-25 08:55:27,154 INFO L451 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-07-25 08:55:27,156 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-07-25 08:55:27,157 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9453, Invalid=9453, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 08:55:27,157 INFO L87 Difference]: Start difference. First operand 274 states and 274 transitions. Second operand 138 states. [2018-07-25 08:55:27,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:27,645 INFO L93 Difference]: Finished difference Result 277 states and 277 transitions. [2018-07-25 08:55:27,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2018-07-25 08:55:27,645 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 273 [2018-07-25 08:55:27,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:27,646 INFO L225 Difference]: With dead ends: 277 [2018-07-25 08:55:27,646 INFO L226 Difference]: Without dead ends: 276 [2018-07-25 08:55:27,647 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9453, Invalid=9453, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 08:55:27,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2018-07-25 08:55:27,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2018-07-25 08:55:27,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2018-07-25 08:55:27,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 276 transitions. [2018-07-25 08:55:27,651 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 276 transitions. Word has length 273 [2018-07-25 08:55:27,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:27,651 INFO L472 AbstractCegarLoop]: Abstraction has 276 states and 276 transitions. [2018-07-25 08:55:27,651 INFO L473 AbstractCegarLoop]: Interpolant automaton has 138 states. [2018-07-25 08:55:27,652 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 276 transitions. [2018-07-25 08:55:27,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2018-07-25 08:55:27,652 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:27,652 INFO L354 BasicCegarLoop]: trace histogram [137, 136, 1, 1] [2018-07-25 08:55:27,653 INFO L415 AbstractCegarLoop]: === Iteration 137 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:27,653 INFO L82 PathProgramCache]: Analyzing trace with hash 343353840, now seen corresponding path program 136 times [2018-07-25 08:55:27,653 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:27,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:28,466 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 08:55:28,467 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:28,467 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [137] total 137 [2018-07-25 08:55:28,468 INFO L451 AbstractCegarLoop]: Interpolant automaton has 139 states [2018-07-25 08:55:28,469 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2018-07-25 08:55:28,470 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2018-07-25 08:55:28,471 INFO L87 Difference]: Start difference. First operand 276 states and 276 transitions. Second operand 139 states. [2018-07-25 08:55:28,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:28,936 INFO L93 Difference]: Finished difference Result 279 states and 279 transitions. [2018-07-25 08:55:28,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-07-25 08:55:28,936 INFO L78 Accepts]: Start accepts. Automaton has 139 states. Word has length 275 [2018-07-25 08:55:28,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:28,937 INFO L225 Difference]: With dead ends: 279 [2018-07-25 08:55:28,937 INFO L226 Difference]: Without dead ends: 278 [2018-07-25 08:55:28,938 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2018-07-25 08:55:28,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2018-07-25 08:55:28,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2018-07-25 08:55:28,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2018-07-25 08:55:28,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 278 transitions. [2018-07-25 08:55:28,942 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 278 transitions. Word has length 275 [2018-07-25 08:55:28,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:28,942 INFO L472 AbstractCegarLoop]: Abstraction has 278 states and 278 transitions. [2018-07-25 08:55:28,942 INFO L473 AbstractCegarLoop]: Interpolant automaton has 139 states. [2018-07-25 08:55:28,942 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 278 transitions. [2018-07-25 08:55:28,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2018-07-25 08:55:28,943 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:28,943 INFO L354 BasicCegarLoop]: trace histogram [138, 137, 1, 1] [2018-07-25 08:55:28,943 INFO L415 AbstractCegarLoop]: === Iteration 138 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:28,943 INFO L82 PathProgramCache]: Analyzing trace with hash -749440462, now seen corresponding path program 137 times [2018-07-25 08:55:28,944 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:28,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:29,689 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 08:55:29,689 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:29,689 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [138] total 138 [2018-07-25 08:55:29,690 INFO L451 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-07-25 08:55:29,691 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-07-25 08:55:29,692 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9730, Invalid=9730, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 08:55:29,692 INFO L87 Difference]: Start difference. First operand 278 states and 278 transitions. Second operand 140 states. [2018-07-25 08:55:30,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:30,185 INFO L93 Difference]: Finished difference Result 281 states and 281 transitions. [2018-07-25 08:55:30,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-07-25 08:55:30,185 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 277 [2018-07-25 08:55:30,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:30,186 INFO L225 Difference]: With dead ends: 281 [2018-07-25 08:55:30,186 INFO L226 Difference]: Without dead ends: 280 [2018-07-25 08:55:30,187 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9730, Invalid=9730, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 08:55:30,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2018-07-25 08:55:30,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2018-07-25 08:55:30,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2018-07-25 08:55:30,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 280 transitions. [2018-07-25 08:55:30,190 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 280 transitions. Word has length 277 [2018-07-25 08:55:30,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:30,191 INFO L472 AbstractCegarLoop]: Abstraction has 280 states and 280 transitions. [2018-07-25 08:55:30,191 INFO L473 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-07-25 08:55:30,191 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 280 transitions. [2018-07-25 08:55:30,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2018-07-25 08:55:30,192 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:30,192 INFO L354 BasicCegarLoop]: trace histogram [139, 138, 1, 1] [2018-07-25 08:55:30,192 INFO L415 AbstractCegarLoop]: === Iteration 139 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:30,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1342222836, now seen corresponding path program 138 times [2018-07-25 08:55:30,192 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:30,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:30,944 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 08:55:30,944 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:30,944 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [139] total 139 [2018-07-25 08:55:30,945 INFO L451 AbstractCegarLoop]: Interpolant automaton has 141 states [2018-07-25 08:55:30,946 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2018-07-25 08:55:30,947 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9870, Invalid=9870, Unknown=0, NotChecked=0, Total=19740 [2018-07-25 08:55:30,947 INFO L87 Difference]: Start difference. First operand 280 states and 280 transitions. Second operand 141 states. [2018-07-25 08:55:31,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:31,439 INFO L93 Difference]: Finished difference Result 283 states and 283 transitions. [2018-07-25 08:55:31,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2018-07-25 08:55:31,440 INFO L78 Accepts]: Start accepts. Automaton has 141 states. Word has length 279 [2018-07-25 08:55:31,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:31,441 INFO L225 Difference]: With dead ends: 283 [2018-07-25 08:55:31,441 INFO L226 Difference]: Without dead ends: 282 [2018-07-25 08:55:31,442 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9870, Invalid=9870, Unknown=0, NotChecked=0, Total=19740 [2018-07-25 08:55:31,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2018-07-25 08:55:31,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2018-07-25 08:55:31,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2018-07-25 08:55:31,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 282 transitions. [2018-07-25 08:55:31,445 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 282 transitions. Word has length 279 [2018-07-25 08:55:31,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:31,446 INFO L472 AbstractCegarLoop]: Abstraction has 282 states and 282 transitions. [2018-07-25 08:55:31,446 INFO L473 AbstractCegarLoop]: Interpolant automaton has 141 states. [2018-07-25 08:55:31,446 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 282 transitions. [2018-07-25 08:55:31,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2018-07-25 08:55:31,447 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:31,447 INFO L354 BasicCegarLoop]: trace histogram [140, 139, 1, 1] [2018-07-25 08:55:31,447 INFO L415 AbstractCegarLoop]: === Iteration 140 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:31,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1385957686, now seen corresponding path program 139 times [2018-07-25 08:55:31,447 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:31,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:32,199 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 08:55:32,200 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:32,200 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [140] total 140 [2018-07-25 08:55:32,200 INFO L451 AbstractCegarLoop]: Interpolant automaton has 142 states [2018-07-25 08:55:32,202 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2018-07-25 08:55:32,202 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10011, Invalid=10011, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 08:55:32,203 INFO L87 Difference]: Start difference. First operand 282 states and 282 transitions. Second operand 142 states. [2018-07-25 08:55:32,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:32,720 INFO L93 Difference]: Finished difference Result 285 states and 285 transitions. [2018-07-25 08:55:32,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-07-25 08:55:32,720 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 281 [2018-07-25 08:55:32,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:32,721 INFO L225 Difference]: With dead ends: 285 [2018-07-25 08:55:32,721 INFO L226 Difference]: Without dead ends: 284 [2018-07-25 08:55:32,722 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=10011, Invalid=10011, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 08:55:32,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2018-07-25 08:55:32,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2018-07-25 08:55:32,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2018-07-25 08:55:32,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 284 transitions. [2018-07-25 08:55:32,726 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 284 transitions. Word has length 281 [2018-07-25 08:55:32,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:32,726 INFO L472 AbstractCegarLoop]: Abstraction has 284 states and 284 transitions. [2018-07-25 08:55:32,726 INFO L473 AbstractCegarLoop]: Interpolant automaton has 142 states. [2018-07-25 08:55:32,726 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 284 transitions. [2018-07-25 08:55:32,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2018-07-25 08:55:32,727 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:32,727 INFO L354 BasicCegarLoop]: trace histogram [141, 140, 1, 1] [2018-07-25 08:55:32,727 INFO L415 AbstractCegarLoop]: === Iteration 141 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:32,727 INFO L82 PathProgramCache]: Analyzing trace with hash 465475576, now seen corresponding path program 140 times [2018-07-25 08:55:32,728 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:32,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:33,474 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 08:55:33,474 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:33,474 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [141] total 141 [2018-07-25 08:55:33,475 INFO L451 AbstractCegarLoop]: Interpolant automaton has 143 states [2018-07-25 08:55:33,476 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2018-07-25 08:55:33,477 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10153, Invalid=10153, Unknown=0, NotChecked=0, Total=20306 [2018-07-25 08:55:33,477 INFO L87 Difference]: Start difference. First operand 284 states and 284 transitions. Second operand 143 states. [2018-07-25 08:55:34,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:34,005 INFO L93 Difference]: Finished difference Result 287 states and 287 transitions. [2018-07-25 08:55:34,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2018-07-25 08:55:34,005 INFO L78 Accepts]: Start accepts. Automaton has 143 states. Word has length 283 [2018-07-25 08:55:34,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:34,006 INFO L225 Difference]: With dead ends: 287 [2018-07-25 08:55:34,006 INFO L226 Difference]: Without dead ends: 286 [2018-07-25 08:55:34,008 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=10153, Invalid=10153, Unknown=0, NotChecked=0, Total=20306 [2018-07-25 08:55:34,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2018-07-25 08:55:34,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2018-07-25 08:55:34,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2018-07-25 08:55:34,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 286 transitions. [2018-07-25 08:55:34,013 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 286 transitions. Word has length 283 [2018-07-25 08:55:34,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:34,014 INFO L472 AbstractCegarLoop]: Abstraction has 286 states and 286 transitions. [2018-07-25 08:55:34,014 INFO L473 AbstractCegarLoop]: Interpolant automaton has 143 states. [2018-07-25 08:55:34,014 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 286 transitions. [2018-07-25 08:55:34,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2018-07-25 08:55:34,015 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:34,015 INFO L354 BasicCegarLoop]: trace histogram [142, 141, 1, 1] [2018-07-25 08:55:34,016 INFO L415 AbstractCegarLoop]: === Iteration 142 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:34,016 INFO L82 PathProgramCache]: Analyzing trace with hash 645430842, now seen corresponding path program 141 times [2018-07-25 08:55:34,016 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:34,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:34,821 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 08:55:34,822 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:34,822 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [142] total 142 [2018-07-25 08:55:34,822 INFO L451 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-07-25 08:55:34,823 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-07-25 08:55:34,824 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10296, Invalid=10296, Unknown=0, NotChecked=0, Total=20592 [2018-07-25 08:55:34,824 INFO L87 Difference]: Start difference. First operand 286 states and 286 transitions. Second operand 144 states. [2018-07-25 08:55:35,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:35,350 INFO L93 Difference]: Finished difference Result 289 states and 289 transitions. [2018-07-25 08:55:35,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2018-07-25 08:55:35,350 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 285 [2018-07-25 08:55:35,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:35,351 INFO L225 Difference]: With dead ends: 289 [2018-07-25 08:55:35,351 INFO L226 Difference]: Without dead ends: 288 [2018-07-25 08:55:35,351 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=10296, Invalid=10296, Unknown=0, NotChecked=0, Total=20592 [2018-07-25 08:55:35,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2018-07-25 08:55:35,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2018-07-25 08:55:35,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2018-07-25 08:55:35,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 288 transitions. [2018-07-25 08:55:35,355 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 288 transitions. Word has length 285 [2018-07-25 08:55:35,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:35,355 INFO L472 AbstractCegarLoop]: Abstraction has 288 states and 288 transitions. [2018-07-25 08:55:35,355 INFO L473 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-07-25 08:55:35,355 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 288 transitions. [2018-07-25 08:55:35,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2018-07-25 08:55:35,356 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:35,356 INFO L354 BasicCegarLoop]: trace histogram [143, 142, 1, 1] [2018-07-25 08:55:35,356 INFO L415 AbstractCegarLoop]: === Iteration 143 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:35,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1783749628, now seen corresponding path program 142 times [2018-07-25 08:55:35,357 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:35,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:36,218 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 08:55:36,219 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:36,219 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [143] total 143 [2018-07-25 08:55:36,219 INFO L451 AbstractCegarLoop]: Interpolant automaton has 145 states [2018-07-25 08:55:36,221 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2018-07-25 08:55:36,221 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10440, Invalid=10440, Unknown=0, NotChecked=0, Total=20880 [2018-07-25 08:55:36,221 INFO L87 Difference]: Start difference. First operand 288 states and 288 transitions. Second operand 145 states. [2018-07-25 08:55:36,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:36,783 INFO L93 Difference]: Finished difference Result 291 states and 291 transitions. [2018-07-25 08:55:36,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2018-07-25 08:55:36,784 INFO L78 Accepts]: Start accepts. Automaton has 145 states. Word has length 287 [2018-07-25 08:55:36,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:36,784 INFO L225 Difference]: With dead ends: 291 [2018-07-25 08:55:36,784 INFO L226 Difference]: Without dead ends: 290 [2018-07-25 08:55:36,785 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=10440, Invalid=10440, Unknown=0, NotChecked=0, Total=20880 [2018-07-25 08:55:36,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2018-07-25 08:55:36,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2018-07-25 08:55:36,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2018-07-25 08:55:36,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 290 transitions. [2018-07-25 08:55:36,789 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 290 transitions. Word has length 287 [2018-07-25 08:55:36,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:36,789 INFO L472 AbstractCegarLoop]: Abstraction has 290 states and 290 transitions. [2018-07-25 08:55:36,789 INFO L473 AbstractCegarLoop]: Interpolant automaton has 145 states. [2018-07-25 08:55:36,789 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 290 transitions. [2018-07-25 08:55:36,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2018-07-25 08:55:36,790 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:36,790 INFO L354 BasicCegarLoop]: trace histogram [144, 143, 1, 1] [2018-07-25 08:55:36,790 INFO L415 AbstractCegarLoop]: === Iteration 144 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:36,791 INFO L82 PathProgramCache]: Analyzing trace with hash 491442494, now seen corresponding path program 143 times [2018-07-25 08:55:36,791 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:36,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:37,575 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 08:55:37,575 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:37,575 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [144] total 144 [2018-07-25 08:55:37,575 INFO L451 AbstractCegarLoop]: Interpolant automaton has 146 states [2018-07-25 08:55:37,577 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2018-07-25 08:55:37,578 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10585, Invalid=10585, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 08:55:37,578 INFO L87 Difference]: Start difference. First operand 290 states and 290 transitions. Second operand 146 states. [2018-07-25 08:55:38,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:38,088 INFO L93 Difference]: Finished difference Result 293 states and 293 transitions. [2018-07-25 08:55:38,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2018-07-25 08:55:38,088 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 289 [2018-07-25 08:55:38,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:38,089 INFO L225 Difference]: With dead ends: 293 [2018-07-25 08:55:38,089 INFO L226 Difference]: Without dead ends: 292 [2018-07-25 08:55:38,090 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=10585, Invalid=10585, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 08:55:38,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2018-07-25 08:55:38,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2018-07-25 08:55:38,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2018-07-25 08:55:38,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 292 transitions. [2018-07-25 08:55:38,094 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 292 transitions. Word has length 289 [2018-07-25 08:55:38,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:38,094 INFO L472 AbstractCegarLoop]: Abstraction has 292 states and 292 transitions. [2018-07-25 08:55:38,094 INFO L473 AbstractCegarLoop]: Interpolant automaton has 146 states. [2018-07-25 08:55:38,095 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 292 transitions. [2018-07-25 08:55:38,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2018-07-25 08:55:38,095 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:38,095 INFO L354 BasicCegarLoop]: trace histogram [145, 144, 1, 1] [2018-07-25 08:55:38,096 INFO L415 AbstractCegarLoop]: === Iteration 145 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:38,096 INFO L82 PathProgramCache]: Analyzing trace with hash -170164736, now seen corresponding path program 144 times [2018-07-25 08:55:38,096 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:38,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:38,925 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 08:55:38,925 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:38,925 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [145] total 145 [2018-07-25 08:55:38,926 INFO L451 AbstractCegarLoop]: Interpolant automaton has 147 states [2018-07-25 08:55:38,927 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2018-07-25 08:55:38,927 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10731, Invalid=10731, Unknown=0, NotChecked=0, Total=21462 [2018-07-25 08:55:38,927 INFO L87 Difference]: Start difference. First operand 292 states and 292 transitions. Second operand 147 states. [2018-07-25 08:55:39,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:39,412 INFO L93 Difference]: Finished difference Result 295 states and 295 transitions. [2018-07-25 08:55:39,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2018-07-25 08:55:39,413 INFO L78 Accepts]: Start accepts. Automaton has 147 states. Word has length 291 [2018-07-25 08:55:39,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:39,413 INFO L225 Difference]: With dead ends: 295 [2018-07-25 08:55:39,413 INFO L226 Difference]: Without dead ends: 294 [2018-07-25 08:55:39,414 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=10731, Invalid=10731, Unknown=0, NotChecked=0, Total=21462 [2018-07-25 08:55:39,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2018-07-25 08:55:39,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2018-07-25 08:55:39,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2018-07-25 08:55:39,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 294 transitions. [2018-07-25 08:55:39,417 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 294 transitions. Word has length 291 [2018-07-25 08:55:39,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:39,418 INFO L472 AbstractCegarLoop]: Abstraction has 294 states and 294 transitions. [2018-07-25 08:55:39,418 INFO L473 AbstractCegarLoop]: Interpolant automaton has 147 states. [2018-07-25 08:55:39,418 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 294 transitions. [2018-07-25 08:55:39,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-07-25 08:55:39,419 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:39,419 INFO L354 BasicCegarLoop]: trace histogram [146, 145, 1, 1] [2018-07-25 08:55:39,419 INFO L415 AbstractCegarLoop]: === Iteration 146 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:39,419 INFO L82 PathProgramCache]: Analyzing trace with hash -319552958, now seen corresponding path program 145 times [2018-07-25 08:55:39,419 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:39,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:40,221 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 08:55:40,222 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:40,222 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [146] total 146 [2018-07-25 08:55:40,222 INFO L451 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-07-25 08:55:40,224 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-07-25 08:55:40,224 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10878, Invalid=10878, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 08:55:40,225 INFO L87 Difference]: Start difference. First operand 294 states and 294 transitions. Second operand 148 states. [2018-07-25 08:55:40,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:40,644 INFO L93 Difference]: Finished difference Result 297 states and 297 transitions. [2018-07-25 08:55:40,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-07-25 08:55:40,644 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 293 [2018-07-25 08:55:40,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:40,645 INFO L225 Difference]: With dead ends: 297 [2018-07-25 08:55:40,645 INFO L226 Difference]: Without dead ends: 296 [2018-07-25 08:55:40,646 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=10878, Invalid=10878, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 08:55:40,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2018-07-25 08:55:40,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2018-07-25 08:55:40,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2018-07-25 08:55:40,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 296 transitions. [2018-07-25 08:55:40,650 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 296 transitions. Word has length 293 [2018-07-25 08:55:40,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:40,651 INFO L472 AbstractCegarLoop]: Abstraction has 296 states and 296 transitions. [2018-07-25 08:55:40,651 INFO L473 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-07-25 08:55:40,651 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 296 transitions. [2018-07-25 08:55:40,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2018-07-25 08:55:40,652 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:40,652 INFO L354 BasicCegarLoop]: trace histogram [147, 146, 1, 1] [2018-07-25 08:55:40,652 INFO L415 AbstractCegarLoop]: === Iteration 147 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:40,652 INFO L82 PathProgramCache]: Analyzing trace with hash 2147253764, now seen corresponding path program 146 times [2018-07-25 08:55:40,652 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:40,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:41,557 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 08:55:41,558 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:41,558 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [147] total 147 [2018-07-25 08:55:41,558 INFO L451 AbstractCegarLoop]: Interpolant automaton has 149 states [2018-07-25 08:55:41,560 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2018-07-25 08:55:41,561 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11026, Invalid=11026, Unknown=0, NotChecked=0, Total=22052 [2018-07-25 08:55:41,561 INFO L87 Difference]: Start difference. First operand 296 states and 296 transitions. Second operand 149 states. [2018-07-25 08:55:41,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:41,799 INFO L93 Difference]: Finished difference Result 299 states and 299 transitions. [2018-07-25 08:55:41,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2018-07-25 08:55:41,799 INFO L78 Accepts]: Start accepts. Automaton has 149 states. Word has length 295 [2018-07-25 08:55:41,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:41,800 INFO L225 Difference]: With dead ends: 299 [2018-07-25 08:55:41,800 INFO L226 Difference]: Without dead ends: 298 [2018-07-25 08:55:41,802 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11026, Invalid=11026, Unknown=0, NotChecked=0, Total=22052 [2018-07-25 08:55:41,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2018-07-25 08:55:41,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2018-07-25 08:55:41,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2018-07-25 08:55:41,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 298 transitions. [2018-07-25 08:55:41,808 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 298 transitions. Word has length 295 [2018-07-25 08:55:41,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:41,809 INFO L472 AbstractCegarLoop]: Abstraction has 298 states and 298 transitions. [2018-07-25 08:55:41,809 INFO L473 AbstractCegarLoop]: Interpolant automaton has 149 states. [2018-07-25 08:55:41,809 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 298 transitions. [2018-07-25 08:55:41,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2018-07-25 08:55:41,810 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:41,810 INFO L354 BasicCegarLoop]: trace histogram [148, 147, 1, 1] [2018-07-25 08:55:41,810 INFO L415 AbstractCegarLoop]: === Iteration 148 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:41,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1926566214, now seen corresponding path program 147 times [2018-07-25 08:55:41,811 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:41,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:42,824 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 08:55:42,825 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:42,825 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [148] total 148 [2018-07-25 08:55:42,825 INFO L451 AbstractCegarLoop]: Interpolant automaton has 150 states [2018-07-25 08:55:42,826 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2018-07-25 08:55:42,826 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11175, Invalid=11175, Unknown=0, NotChecked=0, Total=22350 [2018-07-25 08:55:42,826 INFO L87 Difference]: Start difference. First operand 298 states and 298 transitions. Second operand 150 states. [2018-07-25 08:55:43,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:43,500 INFO L93 Difference]: Finished difference Result 301 states and 301 transitions. [2018-07-25 08:55:43,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2018-07-25 08:55:43,500 INFO L78 Accepts]: Start accepts. Automaton has 150 states. Word has length 297 [2018-07-25 08:55:43,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:43,501 INFO L225 Difference]: With dead ends: 301 [2018-07-25 08:55:43,501 INFO L226 Difference]: Without dead ends: 300 [2018-07-25 08:55:43,501 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11175, Invalid=11175, Unknown=0, NotChecked=0, Total=22350 [2018-07-25 08:55:43,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2018-07-25 08:55:43,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2018-07-25 08:55:43,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2018-07-25 08:55:43,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 300 transitions. [2018-07-25 08:55:43,505 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 300 transitions. Word has length 297 [2018-07-25 08:55:43,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:43,505 INFO L472 AbstractCegarLoop]: Abstraction has 300 states and 300 transitions. [2018-07-25 08:55:43,505 INFO L473 AbstractCegarLoop]: Interpolant automaton has 150 states. [2018-07-25 08:55:43,505 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 300 transitions. [2018-07-25 08:55:43,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2018-07-25 08:55:43,506 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:43,506 INFO L354 BasicCegarLoop]: trace histogram [149, 148, 1, 1] [2018-07-25 08:55:43,506 INFO L415 AbstractCegarLoop]: === Iteration 149 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:43,507 INFO L82 PathProgramCache]: Analyzing trace with hash 299228168, now seen corresponding path program 148 times [2018-07-25 08:55:43,507 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:43,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:44,347 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 08:55:44,347 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:44,347 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [149] total 149 [2018-07-25 08:55:44,347 INFO L451 AbstractCegarLoop]: Interpolant automaton has 151 states [2018-07-25 08:55:44,349 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2018-07-25 08:55:44,350 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11325, Invalid=11325, Unknown=0, NotChecked=0, Total=22650 [2018-07-25 08:55:44,350 INFO L87 Difference]: Start difference. First operand 300 states and 300 transitions. Second operand 151 states. [2018-07-25 08:55:44,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:44,938 INFO L93 Difference]: Finished difference Result 303 states and 303 transitions. [2018-07-25 08:55:44,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2018-07-25 08:55:44,938 INFO L78 Accepts]: Start accepts. Automaton has 151 states. Word has length 299 [2018-07-25 08:55:44,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:44,939 INFO L225 Difference]: With dead ends: 303 [2018-07-25 08:55:44,939 INFO L226 Difference]: Without dead ends: 302 [2018-07-25 08:55:44,940 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11325, Invalid=11325, Unknown=0, NotChecked=0, Total=22650 [2018-07-25 08:55:44,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2018-07-25 08:55:44,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 302. [2018-07-25 08:55:44,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2018-07-25 08:55:44,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 302 transitions. [2018-07-25 08:55:44,944 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 302 transitions. Word has length 299 [2018-07-25 08:55:44,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:44,944 INFO L472 AbstractCegarLoop]: Abstraction has 302 states and 302 transitions. [2018-07-25 08:55:44,944 INFO L473 AbstractCegarLoop]: Interpolant automaton has 151 states. [2018-07-25 08:55:44,944 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 302 transitions. [2018-07-25 08:55:44,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2018-07-25 08:55:44,945 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:44,945 INFO L354 BasicCegarLoop]: trace histogram [150, 149, 1, 1] [2018-07-25 08:55:44,946 INFO L415 AbstractCegarLoop]: === Iteration 150 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:44,946 INFO L82 PathProgramCache]: Analyzing trace with hash -204538294, now seen corresponding path program 149 times [2018-07-25 08:55:44,946 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:45,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:45,874 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 08:55:45,874 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:45,874 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [150] total 150 [2018-07-25 08:55:45,875 INFO L451 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-07-25 08:55:45,876 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-07-25 08:55:45,877 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11476, Invalid=11476, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 08:55:45,877 INFO L87 Difference]: Start difference. First operand 302 states and 302 transitions. Second operand 152 states. [2018-07-25 08:55:46,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:46,188 INFO L93 Difference]: Finished difference Result 305 states and 305 transitions. [2018-07-25 08:55:46,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2018-07-25 08:55:46,189 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 301 [2018-07-25 08:55:46,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:46,189 INFO L225 Difference]: With dead ends: 305 [2018-07-25 08:55:46,189 INFO L226 Difference]: Without dead ends: 304 [2018-07-25 08:55:46,191 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11476, Invalid=11476, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 08:55:46,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2018-07-25 08:55:46,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2018-07-25 08:55:46,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2018-07-25 08:55:46,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 304 transitions. [2018-07-25 08:55:46,195 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 304 transitions. Word has length 301 [2018-07-25 08:55:46,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:46,195 INFO L472 AbstractCegarLoop]: Abstraction has 304 states and 304 transitions. [2018-07-25 08:55:46,195 INFO L473 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-07-25 08:55:46,195 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 304 transitions. [2018-07-25 08:55:46,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2018-07-25 08:55:46,196 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:46,196 INFO L354 BasicCegarLoop]: trace histogram [151, 150, 1, 1] [2018-07-25 08:55:46,196 INFO L415 AbstractCegarLoop]: === Iteration 151 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:46,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1007196172, now seen corresponding path program 150 times [2018-07-25 08:55:46,196 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:46,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:47,136 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 08:55:47,137 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:47,137 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [151] total 151 [2018-07-25 08:55:47,137 INFO L451 AbstractCegarLoop]: Interpolant automaton has 153 states [2018-07-25 08:55:47,138 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants. [2018-07-25 08:55:47,138 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11628, Invalid=11628, Unknown=0, NotChecked=0, Total=23256 [2018-07-25 08:55:47,139 INFO L87 Difference]: Start difference. First operand 304 states and 304 transitions. Second operand 153 states. [2018-07-25 08:55:47,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:47,694 INFO L93 Difference]: Finished difference Result 307 states and 307 transitions. [2018-07-25 08:55:47,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2018-07-25 08:55:47,695 INFO L78 Accepts]: Start accepts. Automaton has 153 states. Word has length 303 [2018-07-25 08:55:47,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:47,695 INFO L225 Difference]: With dead ends: 307 [2018-07-25 08:55:47,695 INFO L226 Difference]: Without dead ends: 306 [2018-07-25 08:55:47,696 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11628, Invalid=11628, Unknown=0, NotChecked=0, Total=23256 [2018-07-25 08:55:47,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2018-07-25 08:55:47,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 306. [2018-07-25 08:55:47,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2018-07-25 08:55:47,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 306 transitions. [2018-07-25 08:55:47,700 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 306 transitions. Word has length 303 [2018-07-25 08:55:47,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:47,700 INFO L472 AbstractCegarLoop]: Abstraction has 306 states and 306 transitions. [2018-07-25 08:55:47,700 INFO L473 AbstractCegarLoop]: Interpolant automaton has 153 states. [2018-07-25 08:55:47,700 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 306 transitions. [2018-07-25 08:55:47,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-07-25 08:55:47,701 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:47,701 INFO L354 BasicCegarLoop]: trace histogram [152, 151, 1, 1] [2018-07-25 08:55:47,701 INFO L415 AbstractCegarLoop]: === Iteration 152 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:47,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1547880782, now seen corresponding path program 151 times [2018-07-25 08:55:47,701 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:47,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:48,564 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 08:55:48,565 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:48,565 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [152] total 152 [2018-07-25 08:55:48,565 INFO L451 AbstractCegarLoop]: Interpolant automaton has 154 states [2018-07-25 08:55:48,567 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2018-07-25 08:55:48,567 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11781, Invalid=11781, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 08:55:48,568 INFO L87 Difference]: Start difference. First operand 306 states and 306 transitions. Second operand 154 states. [2018-07-25 08:55:49,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:49,205 INFO L93 Difference]: Finished difference Result 309 states and 309 transitions. [2018-07-25 08:55:49,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2018-07-25 08:55:49,206 INFO L78 Accepts]: Start accepts. Automaton has 154 states. Word has length 305 [2018-07-25 08:55:49,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:49,207 INFO L225 Difference]: With dead ends: 309 [2018-07-25 08:55:49,207 INFO L226 Difference]: Without dead ends: 308 [2018-07-25 08:55:49,209 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11781, Invalid=11781, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 08:55:49,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2018-07-25 08:55:49,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2018-07-25 08:55:49,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2018-07-25 08:55:49,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 308 transitions. [2018-07-25 08:55:49,216 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 308 transitions. Word has length 305 [2018-07-25 08:55:49,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:49,216 INFO L472 AbstractCegarLoop]: Abstraction has 308 states and 308 transitions. [2018-07-25 08:55:49,216 INFO L473 AbstractCegarLoop]: Interpolant automaton has 154 states. [2018-07-25 08:55:49,217 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 308 transitions. [2018-07-25 08:55:49,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2018-07-25 08:55:49,218 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:49,218 INFO L354 BasicCegarLoop]: trace histogram [153, 152, 1, 1] [2018-07-25 08:55:49,218 INFO L415 AbstractCegarLoop]: === Iteration 153 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:49,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1454748176, now seen corresponding path program 152 times [2018-07-25 08:55:49,219 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:49,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:50,253 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 08:55:50,253 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:50,253 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [153] total 153 [2018-07-25 08:55:50,254 INFO L451 AbstractCegarLoop]: Interpolant automaton has 155 states [2018-07-25 08:55:50,255 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2018-07-25 08:55:50,256 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11935, Invalid=11935, Unknown=0, NotChecked=0, Total=23870 [2018-07-25 08:55:50,256 INFO L87 Difference]: Start difference. First operand 308 states and 308 transitions. Second operand 155 states. [2018-07-25 08:55:50,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:50,536 INFO L93 Difference]: Finished difference Result 311 states and 311 transitions. [2018-07-25 08:55:50,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2018-07-25 08:55:50,536 INFO L78 Accepts]: Start accepts. Automaton has 155 states. Word has length 307 [2018-07-25 08:55:50,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:50,537 INFO L225 Difference]: With dead ends: 311 [2018-07-25 08:55:50,537 INFO L226 Difference]: Without dead ends: 310 [2018-07-25 08:55:50,538 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11935, Invalid=11935, Unknown=0, NotChecked=0, Total=23870 [2018-07-25 08:55:50,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2018-07-25 08:55:50,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 310. [2018-07-25 08:55:50,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 310 states. [2018-07-25 08:55:50,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 310 transitions. [2018-07-25 08:55:50,542 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 310 transitions. Word has length 307 [2018-07-25 08:55:50,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:50,542 INFO L472 AbstractCegarLoop]: Abstraction has 310 states and 310 transitions. [2018-07-25 08:55:50,543 INFO L473 AbstractCegarLoop]: Interpolant automaton has 155 states. [2018-07-25 08:55:50,543 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 310 transitions. [2018-07-25 08:55:50,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2018-07-25 08:55:50,543 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:50,544 INFO L354 BasicCegarLoop]: trace histogram [154, 153, 1, 1] [2018-07-25 08:55:50,544 INFO L415 AbstractCegarLoop]: === Iteration 154 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:50,544 INFO L82 PathProgramCache]: Analyzing trace with hash -2146340270, now seen corresponding path program 153 times [2018-07-25 08:55:50,544 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:50,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:51,478 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 08:55:51,479 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:51,479 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [154] total 154 [2018-07-25 08:55:51,479 INFO L451 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-07-25 08:55:51,480 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-07-25 08:55:51,481 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12090, Invalid=12090, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 08:55:51,481 INFO L87 Difference]: Start difference. First operand 310 states and 310 transitions. Second operand 156 states. [2018-07-25 08:55:52,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:52,168 INFO L93 Difference]: Finished difference Result 313 states and 313 transitions. [2018-07-25 08:55:52,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2018-07-25 08:55:52,168 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 309 [2018-07-25 08:55:52,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:52,169 INFO L225 Difference]: With dead ends: 313 [2018-07-25 08:55:52,169 INFO L226 Difference]: Without dead ends: 312 [2018-07-25 08:55:52,170 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=12090, Invalid=12090, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 08:55:52,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2018-07-25 08:55:52,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2018-07-25 08:55:52,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2018-07-25 08:55:52,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 312 transitions. [2018-07-25 08:55:52,173 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 312 transitions. Word has length 309 [2018-07-25 08:55:52,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:52,174 INFO L472 AbstractCegarLoop]: Abstraction has 312 states and 312 transitions. [2018-07-25 08:55:52,174 INFO L473 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-07-25 08:55:52,174 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 312 transitions. [2018-07-25 08:55:52,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2018-07-25 08:55:52,175 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:52,175 INFO L354 BasicCegarLoop]: trace histogram [155, 154, 1, 1] [2018-07-25 08:55:52,175 INFO L415 AbstractCegarLoop]: === Iteration 155 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:52,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1048696300, now seen corresponding path program 154 times [2018-07-25 08:55:52,175 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:52,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:53,058 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 08:55:53,059 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:53,059 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [155] total 155 [2018-07-25 08:55:53,059 INFO L451 AbstractCegarLoop]: Interpolant automaton has 157 states [2018-07-25 08:55:53,062 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 157 interpolants. [2018-07-25 08:55:53,063 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12246, Invalid=12246, Unknown=0, NotChecked=0, Total=24492 [2018-07-25 08:55:53,064 INFO L87 Difference]: Start difference. First operand 312 states and 312 transitions. Second operand 157 states. [2018-07-25 08:55:53,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:53,311 INFO L93 Difference]: Finished difference Result 315 states and 315 transitions. [2018-07-25 08:55:53,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2018-07-25 08:55:53,311 INFO L78 Accepts]: Start accepts. Automaton has 157 states. Word has length 311 [2018-07-25 08:55:53,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:53,312 INFO L225 Difference]: With dead ends: 315 [2018-07-25 08:55:53,312 INFO L226 Difference]: Without dead ends: 314 [2018-07-25 08:55:53,314 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=12246, Invalid=12246, Unknown=0, NotChecked=0, Total=24492 [2018-07-25 08:55:53,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2018-07-25 08:55:53,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2018-07-25 08:55:53,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2018-07-25 08:55:53,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 314 transitions. [2018-07-25 08:55:53,318 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 314 transitions. Word has length 311 [2018-07-25 08:55:53,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:53,318 INFO L472 AbstractCegarLoop]: Abstraction has 314 states and 314 transitions. [2018-07-25 08:55:53,318 INFO L473 AbstractCegarLoop]: Interpolant automaton has 157 states. [2018-07-25 08:55:53,318 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 314 transitions. [2018-07-25 08:55:53,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2018-07-25 08:55:53,319 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:53,319 INFO L354 BasicCegarLoop]: trace histogram [156, 155, 1, 1] [2018-07-25 08:55:53,319 INFO L415 AbstractCegarLoop]: === Iteration 156 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:53,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1520171350, now seen corresponding path program 155 times [2018-07-25 08:55:53,320 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:53,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:54,235 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 08:55:54,236 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:54,236 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [156] total 156 [2018-07-25 08:55:54,236 INFO L451 AbstractCegarLoop]: Interpolant automaton has 158 states [2018-07-25 08:55:54,238 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2018-07-25 08:55:54,239 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12403, Invalid=12403, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 08:55:54,239 INFO L87 Difference]: Start difference. First operand 314 states and 314 transitions. Second operand 158 states. [2018-07-25 08:55:54,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:54,981 INFO L93 Difference]: Finished difference Result 317 states and 317 transitions. [2018-07-25 08:55:54,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2018-07-25 08:55:54,982 INFO L78 Accepts]: Start accepts. Automaton has 158 states. Word has length 313 [2018-07-25 08:55:54,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:54,982 INFO L225 Difference]: With dead ends: 317 [2018-07-25 08:55:54,982 INFO L226 Difference]: Without dead ends: 316 [2018-07-25 08:55:54,984 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=12403, Invalid=12403, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 08:55:54,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2018-07-25 08:55:54,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 316. [2018-07-25 08:55:54,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2018-07-25 08:55:54,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 316 transitions. [2018-07-25 08:55:54,990 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 316 transitions. Word has length 313 [2018-07-25 08:55:54,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:54,990 INFO L472 AbstractCegarLoop]: Abstraction has 316 states and 316 transitions. [2018-07-25 08:55:54,990 INFO L473 AbstractCegarLoop]: Interpolant automaton has 158 states. [2018-07-25 08:55:54,990 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 316 transitions. [2018-07-25 08:55:54,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2018-07-25 08:55:54,992 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:54,992 INFO L354 BasicCegarLoop]: trace histogram [157, 156, 1, 1] [2018-07-25 08:55:54,992 INFO L415 AbstractCegarLoop]: === Iteration 157 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:54,992 INFO L82 PathProgramCache]: Analyzing trace with hash 595787800, now seen corresponding path program 156 times [2018-07-25 08:55:54,992 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:55,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:55,989 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 08:55:55,989 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:55,989 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [157] total 157 [2018-07-25 08:55:55,989 INFO L451 AbstractCegarLoop]: Interpolant automaton has 159 states [2018-07-25 08:55:55,991 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 159 interpolants. [2018-07-25 08:55:55,991 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12561, Invalid=12561, Unknown=0, NotChecked=0, Total=25122 [2018-07-25 08:55:55,992 INFO L87 Difference]: Start difference. First operand 316 states and 316 transitions. Second operand 159 states. [2018-07-25 08:55:56,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:56,362 INFO L93 Difference]: Finished difference Result 319 states and 319 transitions. [2018-07-25 08:55:56,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2018-07-25 08:55:56,362 INFO L78 Accepts]: Start accepts. Automaton has 159 states. Word has length 315 [2018-07-25 08:55:56,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:56,363 INFO L225 Difference]: With dead ends: 319 [2018-07-25 08:55:56,363 INFO L226 Difference]: Without dead ends: 318 [2018-07-25 08:55:56,364 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=12561, Invalid=12561, Unknown=0, NotChecked=0, Total=25122 [2018-07-25 08:55:56,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2018-07-25 08:55:56,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 318. [2018-07-25 08:55:56,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2018-07-25 08:55:56,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 318 transitions. [2018-07-25 08:55:56,368 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 318 transitions. Word has length 315 [2018-07-25 08:55:56,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:56,369 INFO L472 AbstractCegarLoop]: Abstraction has 318 states and 318 transitions. [2018-07-25 08:55:56,369 INFO L473 AbstractCegarLoop]: Interpolant automaton has 159 states. [2018-07-25 08:55:56,369 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 318 transitions. [2018-07-25 08:55:56,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2018-07-25 08:55:56,370 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:56,370 INFO L354 BasicCegarLoop]: trace histogram [158, 157, 1, 1] [2018-07-25 08:55:56,370 INFO L415 AbstractCegarLoop]: === Iteration 158 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:56,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1321426522, now seen corresponding path program 157 times [2018-07-25 08:55:56,370 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:56,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:57,325 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 08:55:57,325 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:57,325 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [158] total 158 [2018-07-25 08:55:57,325 INFO L451 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-07-25 08:55:57,327 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-07-25 08:55:57,328 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12720, Invalid=12720, Unknown=0, NotChecked=0, Total=25440 [2018-07-25 08:55:57,328 INFO L87 Difference]: Start difference. First operand 318 states and 318 transitions. Second operand 160 states. [2018-07-25 08:55:58,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:58,092 INFO L93 Difference]: Finished difference Result 321 states and 321 transitions. [2018-07-25 08:55:58,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2018-07-25 08:55:58,092 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 317 [2018-07-25 08:55:58,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:58,093 INFO L225 Difference]: With dead ends: 321 [2018-07-25 08:55:58,093 INFO L226 Difference]: Without dead ends: 320 [2018-07-25 08:55:58,094 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=12720, Invalid=12720, Unknown=0, NotChecked=0, Total=25440 [2018-07-25 08:55:58,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2018-07-25 08:55:58,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2018-07-25 08:55:58,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2018-07-25 08:55:58,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 320 transitions. [2018-07-25 08:55:58,098 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 320 transitions. Word has length 317 [2018-07-25 08:55:58,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:58,098 INFO L472 AbstractCegarLoop]: Abstraction has 320 states and 320 transitions. [2018-07-25 08:55:58,099 INFO L473 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-07-25 08:55:58,099 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 320 transitions. [2018-07-25 08:55:58,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2018-07-25 08:55:58,099 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:58,100 INFO L354 BasicCegarLoop]: trace histogram [159, 158, 1, 1] [2018-07-25 08:55:58,100 INFO L415 AbstractCegarLoop]: === Iteration 159 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:58,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1419430884, now seen corresponding path program 158 times [2018-07-25 08:55:58,100 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:58,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:59,062 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 08:55:59,062 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:59,062 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [159] total 159 [2018-07-25 08:55:59,063 INFO L451 AbstractCegarLoop]: Interpolant automaton has 161 states [2018-07-25 08:55:59,065 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2018-07-25 08:55:59,065 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12880, Invalid=12880, Unknown=0, NotChecked=0, Total=25760 [2018-07-25 08:55:59,066 INFO L87 Difference]: Start difference. First operand 320 states and 320 transitions. Second operand 161 states. [2018-07-25 08:55:59,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:59,948 INFO L93 Difference]: Finished difference Result 323 states and 323 transitions. [2018-07-25 08:55:59,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2018-07-25 08:55:59,949 INFO L78 Accepts]: Start accepts. Automaton has 161 states. Word has length 319 [2018-07-25 08:55:59,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:59,949 INFO L225 Difference]: With dead ends: 323 [2018-07-25 08:55:59,949 INFO L226 Difference]: Without dead ends: 322 [2018-07-25 08:55:59,950 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=12880, Invalid=12880, Unknown=0, NotChecked=0, Total=25760 [2018-07-25 08:55:59,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2018-07-25 08:55:59,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2018-07-25 08:55:59,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2018-07-25 08:55:59,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 322 transitions. [2018-07-25 08:55:59,953 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 322 transitions. Word has length 319 [2018-07-25 08:55:59,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:59,954 INFO L472 AbstractCegarLoop]: Abstraction has 322 states and 322 transitions. [2018-07-25 08:55:59,954 INFO L473 AbstractCegarLoop]: Interpolant automaton has 161 states. [2018-07-25 08:55:59,954 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 322 transitions. [2018-07-25 08:55:59,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2018-07-25 08:55:59,954 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:59,955 INFO L354 BasicCegarLoop]: trace histogram [160, 159, 1, 1] [2018-07-25 08:55:59,955 INFO L415 AbstractCegarLoop]: === Iteration 160 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:59,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1726521694, now seen corresponding path program 159 times [2018-07-25 08:55:59,955 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:00,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:00,955 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 08:56:00,956 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:00,956 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [160] total 160 [2018-07-25 08:56:00,956 INFO L451 AbstractCegarLoop]: Interpolant automaton has 162 states [2018-07-25 08:56:00,958 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2018-07-25 08:56:00,959 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13041, Invalid=13041, Unknown=0, NotChecked=0, Total=26082 [2018-07-25 08:56:00,959 INFO L87 Difference]: Start difference. First operand 322 states and 322 transitions. Second operand 162 states. [2018-07-25 08:56:01,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:01,222 INFO L93 Difference]: Finished difference Result 325 states and 325 transitions. [2018-07-25 08:56:01,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2018-07-25 08:56:01,222 INFO L78 Accepts]: Start accepts. Automaton has 162 states. Word has length 321 [2018-07-25 08:56:01,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:01,223 INFO L225 Difference]: With dead ends: 325 [2018-07-25 08:56:01,223 INFO L226 Difference]: Without dead ends: 324 [2018-07-25 08:56:01,224 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13041, Invalid=13041, Unknown=0, NotChecked=0, Total=26082 [2018-07-25 08:56:01,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2018-07-25 08:56:01,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 324. [2018-07-25 08:56:01,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2018-07-25 08:56:01,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 324 transitions. [2018-07-25 08:56:01,228 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 324 transitions. Word has length 321 [2018-07-25 08:56:01,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:01,228 INFO L472 AbstractCegarLoop]: Abstraction has 324 states and 324 transitions. [2018-07-25 08:56:01,228 INFO L473 AbstractCegarLoop]: Interpolant automaton has 162 states. [2018-07-25 08:56:01,229 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 324 transitions. [2018-07-25 08:56:01,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2018-07-25 08:56:01,229 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:01,230 INFO L354 BasicCegarLoop]: trace histogram [161, 160, 1, 1] [2018-07-25 08:56:01,230 INFO L415 AbstractCegarLoop]: === Iteration 161 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:01,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1329972768, now seen corresponding path program 160 times [2018-07-25 08:56:01,230 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:01,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:02,227 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 08:56:02,228 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:02,228 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [161] total 161 [2018-07-25 08:56:02,228 INFO L451 AbstractCegarLoop]: Interpolant automaton has 163 states [2018-07-25 08:56:02,230 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants. [2018-07-25 08:56:02,231 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13203, Invalid=13203, Unknown=0, NotChecked=0, Total=26406 [2018-07-25 08:56:02,231 INFO L87 Difference]: Start difference. First operand 324 states and 324 transitions. Second operand 163 states. [2018-07-25 08:56:03,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:03,063 INFO L93 Difference]: Finished difference Result 327 states and 327 transitions. [2018-07-25 08:56:03,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2018-07-25 08:56:03,063 INFO L78 Accepts]: Start accepts. Automaton has 163 states. Word has length 323 [2018-07-25 08:56:03,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:03,064 INFO L225 Difference]: With dead ends: 327 [2018-07-25 08:56:03,064 INFO L226 Difference]: Without dead ends: 326 [2018-07-25 08:56:03,065 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13203, Invalid=13203, Unknown=0, NotChecked=0, Total=26406 [2018-07-25 08:56:03,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2018-07-25 08:56:03,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2018-07-25 08:56:03,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2018-07-25 08:56:03,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 326 transitions. [2018-07-25 08:56:03,069 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 326 transitions. Word has length 323 [2018-07-25 08:56:03,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:03,069 INFO L472 AbstractCegarLoop]: Abstraction has 326 states and 326 transitions. [2018-07-25 08:56:03,069 INFO L473 AbstractCegarLoop]: Interpolant automaton has 163 states. [2018-07-25 08:56:03,069 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 326 transitions. [2018-07-25 08:56:03,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2018-07-25 08:56:03,070 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:03,070 INFO L354 BasicCegarLoop]: trace histogram [162, 161, 1, 1] [2018-07-25 08:56:03,070 INFO L415 AbstractCegarLoop]: === Iteration 162 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:03,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1796423070, now seen corresponding path program 161 times [2018-07-25 08:56:03,071 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:03,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:04,113 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 08:56:04,113 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:04,114 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [162] total 162 [2018-07-25 08:56:04,114 INFO L451 AbstractCegarLoop]: Interpolant automaton has 164 states [2018-07-25 08:56:04,115 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2018-07-25 08:56:04,116 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13366, Invalid=13366, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 08:56:04,116 INFO L87 Difference]: Start difference. First operand 326 states and 326 transitions. Second operand 164 states. [2018-07-25 08:56:05,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:05,019 INFO L93 Difference]: Finished difference Result 329 states and 329 transitions. [2018-07-25 08:56:05,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2018-07-25 08:56:05,019 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 325 [2018-07-25 08:56:05,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:05,020 INFO L225 Difference]: With dead ends: 329 [2018-07-25 08:56:05,020 INFO L226 Difference]: Without dead ends: 328 [2018-07-25 08:56:05,020 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13366, Invalid=13366, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 08:56:05,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2018-07-25 08:56:05,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2018-07-25 08:56:05,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2018-07-25 08:56:05,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 328 transitions. [2018-07-25 08:56:05,024 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 328 transitions. Word has length 325 [2018-07-25 08:56:05,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:05,025 INFO L472 AbstractCegarLoop]: Abstraction has 328 states and 328 transitions. [2018-07-25 08:56:05,025 INFO L473 AbstractCegarLoop]: Interpolant automaton has 164 states. [2018-07-25 08:56:05,025 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 328 transitions. [2018-07-25 08:56:05,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2018-07-25 08:56:05,026 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:05,026 INFO L354 BasicCegarLoop]: trace histogram [163, 162, 1, 1] [2018-07-25 08:56:05,026 INFO L415 AbstractCegarLoop]: === Iteration 163 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:05,026 INFO L82 PathProgramCache]: Analyzing trace with hash 214283812, now seen corresponding path program 162 times [2018-07-25 08:56:05,026 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:05,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:06,040 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 08:56:06,040 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:06,041 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [163] total 163 [2018-07-25 08:56:06,041 INFO L451 AbstractCegarLoop]: Interpolant automaton has 165 states [2018-07-25 08:56:06,043 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 165 interpolants. [2018-07-25 08:56:06,044 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13530, Invalid=13530, Unknown=0, NotChecked=0, Total=27060 [2018-07-25 08:56:06,044 INFO L87 Difference]: Start difference. First operand 328 states and 328 transitions. Second operand 165 states. [2018-07-25 08:56:06,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:06,769 INFO L93 Difference]: Finished difference Result 331 states and 331 transitions. [2018-07-25 08:56:06,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2018-07-25 08:56:06,769 INFO L78 Accepts]: Start accepts. Automaton has 165 states. Word has length 327 [2018-07-25 08:56:06,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:06,770 INFO L225 Difference]: With dead ends: 331 [2018-07-25 08:56:06,770 INFO L226 Difference]: Without dead ends: 330 [2018-07-25 08:56:06,771 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13530, Invalid=13530, Unknown=0, NotChecked=0, Total=27060 [2018-07-25 08:56:06,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2018-07-25 08:56:06,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 330. [2018-07-25 08:56:06,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2018-07-25 08:56:06,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 330 transitions. [2018-07-25 08:56:06,775 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 330 transitions. Word has length 327 [2018-07-25 08:56:06,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:06,775 INFO L472 AbstractCegarLoop]: Abstraction has 330 states and 330 transitions. [2018-07-25 08:56:06,775 INFO L473 AbstractCegarLoop]: Interpolant automaton has 165 states. [2018-07-25 08:56:06,775 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 330 transitions. [2018-07-25 08:56:06,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2018-07-25 08:56:06,776 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:06,776 INFO L354 BasicCegarLoop]: trace histogram [164, 163, 1, 1] [2018-07-25 08:56:06,776 INFO L415 AbstractCegarLoop]: === Iteration 164 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:06,776 INFO L82 PathProgramCache]: Analyzing trace with hash -231685786, now seen corresponding path program 163 times [2018-07-25 08:56:06,777 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:06,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:07,819 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 08:56:07,819 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:07,819 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [164] total 164 [2018-07-25 08:56:07,820 INFO L451 AbstractCegarLoop]: Interpolant automaton has 166 states [2018-07-25 08:56:07,822 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2018-07-25 08:56:07,823 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13695, Invalid=13695, Unknown=0, NotChecked=0, Total=27390 [2018-07-25 08:56:07,823 INFO L87 Difference]: Start difference. First operand 330 states and 330 transitions. Second operand 166 states. [2018-07-25 08:56:08,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:08,141 INFO L93 Difference]: Finished difference Result 333 states and 333 transitions. [2018-07-25 08:56:08,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2018-07-25 08:56:08,142 INFO L78 Accepts]: Start accepts. Automaton has 166 states. Word has length 329 [2018-07-25 08:56:08,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:08,142 INFO L225 Difference]: With dead ends: 333 [2018-07-25 08:56:08,142 INFO L226 Difference]: Without dead ends: 332 [2018-07-25 08:56:08,144 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13695, Invalid=13695, Unknown=0, NotChecked=0, Total=27390 [2018-07-25 08:56:08,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2018-07-25 08:56:08,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2018-07-25 08:56:08,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2018-07-25 08:56:08,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 332 transitions. [2018-07-25 08:56:08,150 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 332 transitions. Word has length 329 [2018-07-25 08:56:08,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:08,150 INFO L472 AbstractCegarLoop]: Abstraction has 332 states and 332 transitions. [2018-07-25 08:56:08,150 INFO L473 AbstractCegarLoop]: Interpolant automaton has 166 states. [2018-07-25 08:56:08,150 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 332 transitions. [2018-07-25 08:56:08,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2018-07-25 08:56:08,152 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:08,152 INFO L354 BasicCegarLoop]: trace histogram [165, 164, 1, 1] [2018-07-25 08:56:08,152 INFO L415 AbstractCegarLoop]: === Iteration 165 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:08,152 INFO L82 PathProgramCache]: Analyzing trace with hash 688260136, now seen corresponding path program 164 times [2018-07-25 08:56:08,152 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:08,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:09,310 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 08:56:09,310 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:09,310 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [165] total 165 [2018-07-25 08:56:09,311 INFO L451 AbstractCegarLoop]: Interpolant automaton has 167 states [2018-07-25 08:56:09,313 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 167 interpolants. [2018-07-25 08:56:09,314 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13861, Invalid=13861, Unknown=0, NotChecked=0, Total=27722 [2018-07-25 08:56:09,314 INFO L87 Difference]: Start difference. First operand 332 states and 332 transitions. Second operand 167 states. [2018-07-25 08:56:09,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:09,731 INFO L93 Difference]: Finished difference Result 335 states and 335 transitions. [2018-07-25 08:56:09,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2018-07-25 08:56:09,731 INFO L78 Accepts]: Start accepts. Automaton has 167 states. Word has length 331 [2018-07-25 08:56:09,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:09,731 INFO L225 Difference]: With dead ends: 335 [2018-07-25 08:56:09,732 INFO L226 Difference]: Without dead ends: 334 [2018-07-25 08:56:09,733 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=13861, Invalid=13861, Unknown=0, NotChecked=0, Total=27722 [2018-07-25 08:56:09,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2018-07-25 08:56:09,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 334. [2018-07-25 08:56:09,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2018-07-25 08:56:09,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 334 transitions. [2018-07-25 08:56:09,737 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 334 transitions. Word has length 331 [2018-07-25 08:56:09,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:09,737 INFO L472 AbstractCegarLoop]: Abstraction has 334 states and 334 transitions. [2018-07-25 08:56:09,737 INFO L473 AbstractCegarLoop]: Interpolant automaton has 167 states. [2018-07-25 08:56:09,737 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 334 transitions. [2018-07-25 08:56:09,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2018-07-25 08:56:09,738 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:09,738 INFO L354 BasicCegarLoop]: trace histogram [166, 165, 1, 1] [2018-07-25 08:56:09,739 INFO L415 AbstractCegarLoop]: === Iteration 166 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:09,739 INFO L82 PathProgramCache]: Analyzing trace with hash -6971798, now seen corresponding path program 165 times [2018-07-25 08:56:09,739 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:09,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:10,865 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 08:56:10,866 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:10,866 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [166] total 166 [2018-07-25 08:56:10,866 INFO L451 AbstractCegarLoop]: Interpolant automaton has 168 states [2018-07-25 08:56:10,868 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2018-07-25 08:56:10,869 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14028, Invalid=14028, Unknown=0, NotChecked=0, Total=28056 [2018-07-25 08:56:10,869 INFO L87 Difference]: Start difference. First operand 334 states and 334 transitions. Second operand 168 states. [2018-07-25 08:56:11,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:11,642 INFO L93 Difference]: Finished difference Result 337 states and 337 transitions. [2018-07-25 08:56:11,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2018-07-25 08:56:11,643 INFO L78 Accepts]: Start accepts. Automaton has 168 states. Word has length 333 [2018-07-25 08:56:11,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:11,643 INFO L225 Difference]: With dead ends: 337 [2018-07-25 08:56:11,643 INFO L226 Difference]: Without dead ends: 336 [2018-07-25 08:56:11,645 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=14028, Invalid=14028, Unknown=0, NotChecked=0, Total=28056 [2018-07-25 08:56:11,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2018-07-25 08:56:11,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 336. [2018-07-25 08:56:11,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2018-07-25 08:56:11,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 336 transitions. [2018-07-25 08:56:11,649 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 336 transitions. Word has length 333 [2018-07-25 08:56:11,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:11,649 INFO L472 AbstractCegarLoop]: Abstraction has 336 states and 336 transitions. [2018-07-25 08:56:11,649 INFO L473 AbstractCegarLoop]: Interpolant automaton has 168 states. [2018-07-25 08:56:11,649 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 336 transitions. [2018-07-25 08:56:11,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2018-07-25 08:56:11,650 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:11,650 INFO L354 BasicCegarLoop]: trace histogram [167, 166, 1, 1] [2018-07-25 08:56:11,650 INFO L415 AbstractCegarLoop]: === Iteration 167 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:11,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1890037804, now seen corresponding path program 166 times [2018-07-25 08:56:11,650 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:11,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:12,719 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 08:56:12,719 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:12,719 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [167] total 167 [2018-07-25 08:56:12,720 INFO L451 AbstractCegarLoop]: Interpolant automaton has 169 states [2018-07-25 08:56:12,721 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 169 interpolants. [2018-07-25 08:56:12,722 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14196, Invalid=14196, Unknown=0, NotChecked=0, Total=28392 [2018-07-25 08:56:12,722 INFO L87 Difference]: Start difference. First operand 336 states and 336 transitions. Second operand 169 states. [2018-07-25 08:56:13,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:13,658 INFO L93 Difference]: Finished difference Result 339 states and 339 transitions. [2018-07-25 08:56:13,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2018-07-25 08:56:13,658 INFO L78 Accepts]: Start accepts. Automaton has 169 states. Word has length 335 [2018-07-25 08:56:13,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:13,658 INFO L225 Difference]: With dead ends: 339 [2018-07-25 08:56:13,659 INFO L226 Difference]: Without dead ends: 338 [2018-07-25 08:56:13,660 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=14196, Invalid=14196, Unknown=0, NotChecked=0, Total=28392 [2018-07-25 08:56:13,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2018-07-25 08:56:13,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 338. [2018-07-25 08:56:13,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2018-07-25 08:56:13,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 338 transitions. [2018-07-25 08:56:13,664 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 338 transitions. Word has length 335 [2018-07-25 08:56:13,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:13,664 INFO L472 AbstractCegarLoop]: Abstraction has 338 states and 338 transitions. [2018-07-25 08:56:13,664 INFO L473 AbstractCegarLoop]: Interpolant automaton has 169 states. [2018-07-25 08:56:13,664 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 338 transitions. [2018-07-25 08:56:13,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2018-07-25 08:56:13,665 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:13,665 INFO L354 BasicCegarLoop]: trace histogram [168, 167, 1, 1] [2018-07-25 08:56:13,665 INFO L415 AbstractCegarLoop]: === Iteration 168 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:13,665 INFO L82 PathProgramCache]: Analyzing trace with hash -444835474, now seen corresponding path program 167 times [2018-07-25 08:56:13,665 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:13,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:14,726 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 08:56:14,727 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:14,727 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [168] total 168 [2018-07-25 08:56:14,727 INFO L451 AbstractCegarLoop]: Interpolant automaton has 170 states [2018-07-25 08:56:14,729 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants. [2018-07-25 08:56:14,730 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14365, Invalid=14365, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 08:56:14,731 INFO L87 Difference]: Start difference. First operand 338 states and 338 transitions. Second operand 170 states. [2018-07-25 08:56:15,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:15,717 INFO L93 Difference]: Finished difference Result 341 states and 341 transitions. [2018-07-25 08:56:15,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2018-07-25 08:56:15,718 INFO L78 Accepts]: Start accepts. Automaton has 170 states. Word has length 337 [2018-07-25 08:56:15,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:15,718 INFO L225 Difference]: With dead ends: 341 [2018-07-25 08:56:15,718 INFO L226 Difference]: Without dead ends: 340 [2018-07-25 08:56:15,720 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=14365, Invalid=14365, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 08:56:15,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-07-25 08:56:15,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2018-07-25 08:56:15,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-07-25 08:56:15,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 340 transitions. [2018-07-25 08:56:15,724 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 340 transitions. Word has length 337 [2018-07-25 08:56:15,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:15,725 INFO L472 AbstractCegarLoop]: Abstraction has 340 states and 340 transitions. [2018-07-25 08:56:15,725 INFO L473 AbstractCegarLoop]: Interpolant automaton has 170 states. [2018-07-25 08:56:15,725 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 340 transitions. [2018-07-25 08:56:15,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2018-07-25 08:56:15,727 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:15,727 INFO L354 BasicCegarLoop]: trace histogram [169, 168, 1, 1] [2018-07-25 08:56:15,728 INFO L415 AbstractCegarLoop]: === Iteration 169 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:15,728 INFO L82 PathProgramCache]: Analyzing trace with hash 2009840176, now seen corresponding path program 168 times [2018-07-25 08:56:15,728 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:15,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:16,868 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 08:56:16,869 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:16,869 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [169] total 169 [2018-07-25 08:56:16,869 INFO L451 AbstractCegarLoop]: Interpolant automaton has 171 states [2018-07-25 08:56:16,870 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 171 interpolants. [2018-07-25 08:56:16,871 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14535, Invalid=14535, Unknown=0, NotChecked=0, Total=29070 [2018-07-25 08:56:16,871 INFO L87 Difference]: Start difference. First operand 340 states and 340 transitions. Second operand 171 states. [2018-07-25 08:56:17,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:17,817 INFO L93 Difference]: Finished difference Result 343 states and 343 transitions. [2018-07-25 08:56:17,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2018-07-25 08:56:17,817 INFO L78 Accepts]: Start accepts. Automaton has 171 states. Word has length 339 [2018-07-25 08:56:17,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:17,818 INFO L225 Difference]: With dead ends: 343 [2018-07-25 08:56:17,818 INFO L226 Difference]: Without dead ends: 342 [2018-07-25 08:56:17,818 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=14535, Invalid=14535, Unknown=0, NotChecked=0, Total=29070 [2018-07-25 08:56:17,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2018-07-25 08:56:17,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 342. [2018-07-25 08:56:17,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2018-07-25 08:56:17,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 342 transitions. [2018-07-25 08:56:17,822 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 342 transitions. Word has length 339 [2018-07-25 08:56:17,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:17,823 INFO L472 AbstractCegarLoop]: Abstraction has 342 states and 342 transitions. [2018-07-25 08:56:17,823 INFO L473 AbstractCegarLoop]: Interpolant automaton has 171 states. [2018-07-25 08:56:17,823 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 342 transitions. [2018-07-25 08:56:17,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2018-07-25 08:56:17,824 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:17,824 INFO L354 BasicCegarLoop]: trace histogram [170, 169, 1, 1] [2018-07-25 08:56:17,824 INFO L415 AbstractCegarLoop]: === Iteration 170 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:17,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1278872974, now seen corresponding path program 169 times [2018-07-25 08:56:17,824 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:17,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:18,951 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 08:56:18,951 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:18,951 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [170] total 170 [2018-07-25 08:56:18,952 INFO L451 AbstractCegarLoop]: Interpolant automaton has 172 states [2018-07-25 08:56:18,954 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2018-07-25 08:56:18,955 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14706, Invalid=14706, Unknown=0, NotChecked=0, Total=29412 [2018-07-25 08:56:18,955 INFO L87 Difference]: Start difference. First operand 342 states and 342 transitions. Second operand 172 states. [2018-07-25 08:56:19,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:19,969 INFO L93 Difference]: Finished difference Result 345 states and 345 transitions. [2018-07-25 08:56:19,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2018-07-25 08:56:19,969 INFO L78 Accepts]: Start accepts. Automaton has 172 states. Word has length 341 [2018-07-25 08:56:19,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:19,970 INFO L225 Difference]: With dead ends: 345 [2018-07-25 08:56:19,970 INFO L226 Difference]: Without dead ends: 344 [2018-07-25 08:56:19,972 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=14706, Invalid=14706, Unknown=0, NotChecked=0, Total=29412 [2018-07-25 08:56:19,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2018-07-25 08:56:19,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2018-07-25 08:56:19,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2018-07-25 08:56:19,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 344 transitions. [2018-07-25 08:56:19,978 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 344 transitions. Word has length 341 [2018-07-25 08:56:19,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:19,978 INFO L472 AbstractCegarLoop]: Abstraction has 344 states and 344 transitions. [2018-07-25 08:56:19,978 INFO L473 AbstractCegarLoop]: Interpolant automaton has 172 states. [2018-07-25 08:56:19,979 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 344 transitions. [2018-07-25 08:56:19,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2018-07-25 08:56:19,980 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:19,980 INFO L354 BasicCegarLoop]: trace histogram [171, 170, 1, 1] [2018-07-25 08:56:19,980 INFO L415 AbstractCegarLoop]: === Iteration 171 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:19,980 INFO L82 PathProgramCache]: Analyzing trace with hash -636280268, now seen corresponding path program 170 times [2018-07-25 08:56:19,980 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:20,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:21,154 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 08:56:21,154 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:21,155 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [171] total 171 [2018-07-25 08:56:21,155 INFO L451 AbstractCegarLoop]: Interpolant automaton has 173 states [2018-07-25 08:56:21,158 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 173 interpolants. [2018-07-25 08:56:21,160 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14878, Invalid=14878, Unknown=0, NotChecked=0, Total=29756 [2018-07-25 08:56:21,160 INFO L87 Difference]: Start difference. First operand 344 states and 344 transitions. Second operand 173 states. [2018-07-25 08:56:22,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:22,191 INFO L93 Difference]: Finished difference Result 347 states and 347 transitions. [2018-07-25 08:56:22,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2018-07-25 08:56:22,192 INFO L78 Accepts]: Start accepts. Automaton has 173 states. Word has length 343 [2018-07-25 08:56:22,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:22,192 INFO L225 Difference]: With dead ends: 347 [2018-07-25 08:56:22,192 INFO L226 Difference]: Without dead ends: 346 [2018-07-25 08:56:22,193 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=14878, Invalid=14878, Unknown=0, NotChecked=0, Total=29756 [2018-07-25 08:56:22,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2018-07-25 08:56:22,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2018-07-25 08:56:22,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2018-07-25 08:56:22,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 346 transitions. [2018-07-25 08:56:22,197 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 346 transitions. Word has length 343 [2018-07-25 08:56:22,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:22,198 INFO L472 AbstractCegarLoop]: Abstraction has 346 states and 346 transitions. [2018-07-25 08:56:22,198 INFO L473 AbstractCegarLoop]: Interpolant automaton has 173 states. [2018-07-25 08:56:22,198 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 346 transitions. [2018-07-25 08:56:22,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2018-07-25 08:56:22,199 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:22,199 INFO L354 BasicCegarLoop]: trace histogram [172, 171, 1, 1] [2018-07-25 08:56:22,200 INFO L415 AbstractCegarLoop]: === Iteration 172 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:22,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1579980426, now seen corresponding path program 171 times [2018-07-25 08:56:22,200 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:22,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:23,327 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 08:56:23,327 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:23,328 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [172] total 172 [2018-07-25 08:56:23,328 INFO L451 AbstractCegarLoop]: Interpolant automaton has 174 states [2018-07-25 08:56:23,330 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 174 interpolants. [2018-07-25 08:56:23,331 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15051, Invalid=15051, Unknown=0, NotChecked=0, Total=30102 [2018-07-25 08:56:23,332 INFO L87 Difference]: Start difference. First operand 346 states and 346 transitions. Second operand 174 states. [2018-07-25 08:56:24,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:24,064 INFO L93 Difference]: Finished difference Result 349 states and 349 transitions. [2018-07-25 08:56:24,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2018-07-25 08:56:24,064 INFO L78 Accepts]: Start accepts. Automaton has 174 states. Word has length 345 [2018-07-25 08:56:24,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:24,065 INFO L225 Difference]: With dead ends: 349 [2018-07-25 08:56:24,065 INFO L226 Difference]: Without dead ends: 348 [2018-07-25 08:56:24,066 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15051, Invalid=15051, Unknown=0, NotChecked=0, Total=30102 [2018-07-25 08:56:24,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2018-07-25 08:56:24,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 348. [2018-07-25 08:56:24,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2018-07-25 08:56:24,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 348 transitions. [2018-07-25 08:56:24,073 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 348 transitions. Word has length 345 [2018-07-25 08:56:24,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:24,073 INFO L472 AbstractCegarLoop]: Abstraction has 348 states and 348 transitions. [2018-07-25 08:56:24,073 INFO L473 AbstractCegarLoop]: Interpolant automaton has 174 states. [2018-07-25 08:56:24,074 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 348 transitions. [2018-07-25 08:56:24,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2018-07-25 08:56:24,075 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:24,075 INFO L354 BasicCegarLoop]: trace histogram [173, 172, 1, 1] [2018-07-25 08:56:24,075 INFO L415 AbstractCegarLoop]: === Iteration 173 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:24,076 INFO L82 PathProgramCache]: Analyzing trace with hash 2057234488, now seen corresponding path program 172 times [2018-07-25 08:56:24,076 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:24,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:25,342 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 08:56:25,342 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:25,342 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [173] total 173 [2018-07-25 08:56:25,343 INFO L451 AbstractCegarLoop]: Interpolant automaton has 175 states [2018-07-25 08:56:25,345 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 175 interpolants. [2018-07-25 08:56:25,347 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15225, Invalid=15225, Unknown=0, NotChecked=0, Total=30450 [2018-07-25 08:56:25,347 INFO L87 Difference]: Start difference. First operand 348 states and 348 transitions. Second operand 175 states. [2018-07-25 08:56:25,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:25,751 INFO L93 Difference]: Finished difference Result 351 states and 351 transitions. [2018-07-25 08:56:25,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2018-07-25 08:56:25,751 INFO L78 Accepts]: Start accepts. Automaton has 175 states. Word has length 347 [2018-07-25 08:56:25,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:25,751 INFO L225 Difference]: With dead ends: 351 [2018-07-25 08:56:25,752 INFO L226 Difference]: Without dead ends: 350 [2018-07-25 08:56:25,753 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15225, Invalid=15225, Unknown=0, NotChecked=0, Total=30450 [2018-07-25 08:56:25,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2018-07-25 08:56:25,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 350. [2018-07-25 08:56:25,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2018-07-25 08:56:25,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 350 transitions. [2018-07-25 08:56:25,758 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 350 transitions. Word has length 347 [2018-07-25 08:56:25,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:25,758 INFO L472 AbstractCegarLoop]: Abstraction has 350 states and 350 transitions. [2018-07-25 08:56:25,758 INFO L473 AbstractCegarLoop]: Interpolant automaton has 175 states. [2018-07-25 08:56:25,758 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 350 transitions. [2018-07-25 08:56:25,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2018-07-25 08:56:25,759 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:25,759 INFO L354 BasicCegarLoop]: trace histogram [174, 173, 1, 1] [2018-07-25 08:56:25,759 INFO L415 AbstractCegarLoop]: === Iteration 174 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:25,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1317387898, now seen corresponding path program 173 times [2018-07-25 08:56:25,760 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:25,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:26,923 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 08:56:26,924 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:26,924 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [174] total 174 [2018-07-25 08:56:26,924 INFO L451 AbstractCegarLoop]: Interpolant automaton has 176 states [2018-07-25 08:56:26,926 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2018-07-25 08:56:26,927 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15400, Invalid=15400, Unknown=0, NotChecked=0, Total=30800 [2018-07-25 08:56:26,927 INFO L87 Difference]: Start difference. First operand 350 states and 350 transitions. Second operand 176 states. [2018-07-25 08:56:27,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:27,401 INFO L93 Difference]: Finished difference Result 353 states and 353 transitions. [2018-07-25 08:56:27,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2018-07-25 08:56:27,401 INFO L78 Accepts]: Start accepts. Automaton has 176 states. Word has length 349 [2018-07-25 08:56:27,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:27,402 INFO L225 Difference]: With dead ends: 353 [2018-07-25 08:56:27,402 INFO L226 Difference]: Without dead ends: 352 [2018-07-25 08:56:27,403 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15400, Invalid=15400, Unknown=0, NotChecked=0, Total=30800 [2018-07-25 08:56:27,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2018-07-25 08:56:27,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 352. [2018-07-25 08:56:27,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2018-07-25 08:56:27,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 352 transitions. [2018-07-25 08:56:27,408 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 352 transitions. Word has length 349 [2018-07-25 08:56:27,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:27,408 INFO L472 AbstractCegarLoop]: Abstraction has 352 states and 352 transitions. [2018-07-25 08:56:27,408 INFO L473 AbstractCegarLoop]: Interpolant automaton has 176 states. [2018-07-25 08:56:27,408 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 352 transitions. [2018-07-25 08:56:27,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2018-07-25 08:56:27,409 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:27,410 INFO L354 BasicCegarLoop]: trace histogram [175, 174, 1, 1] [2018-07-25 08:56:27,410 INFO L415 AbstractCegarLoop]: === Iteration 175 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:27,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1005581252, now seen corresponding path program 174 times [2018-07-25 08:56:27,410 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:27,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:28,625 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 08:56:28,625 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:28,625 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [175] total 175 [2018-07-25 08:56:28,626 INFO L451 AbstractCegarLoop]: Interpolant automaton has 177 states [2018-07-25 08:56:28,628 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 177 interpolants. [2018-07-25 08:56:28,629 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15576, Invalid=15576, Unknown=0, NotChecked=0, Total=31152 [2018-07-25 08:56:28,629 INFO L87 Difference]: Start difference. First operand 352 states and 352 transitions. Second operand 177 states. [2018-07-25 08:56:29,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:29,693 INFO L93 Difference]: Finished difference Result 355 states and 355 transitions. [2018-07-25 08:56:29,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2018-07-25 08:56:29,693 INFO L78 Accepts]: Start accepts. Automaton has 177 states. Word has length 351 [2018-07-25 08:56:29,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:29,694 INFO L225 Difference]: With dead ends: 355 [2018-07-25 08:56:29,694 INFO L226 Difference]: Without dead ends: 354 [2018-07-25 08:56:29,696 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15576, Invalid=15576, Unknown=0, NotChecked=0, Total=31152 [2018-07-25 08:56:29,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2018-07-25 08:56:29,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 354. [2018-07-25 08:56:29,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2018-07-25 08:56:29,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 354 transitions. [2018-07-25 08:56:29,700 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 354 transitions. Word has length 351 [2018-07-25 08:56:29,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:29,700 INFO L472 AbstractCegarLoop]: Abstraction has 354 states and 354 transitions. [2018-07-25 08:56:29,700 INFO L473 AbstractCegarLoop]: Interpolant automaton has 177 states. [2018-07-25 08:56:29,700 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 354 transitions. [2018-07-25 08:56:29,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2018-07-25 08:56:29,701 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:29,701 INFO L354 BasicCegarLoop]: trace histogram [176, 175, 1, 1] [2018-07-25 08:56:29,701 INFO L415 AbstractCegarLoop]: === Iteration 176 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:29,702 INFO L82 PathProgramCache]: Analyzing trace with hash 4059518, now seen corresponding path program 175 times [2018-07-25 08:56:29,702 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:30,900 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 08:56:30,900 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:30,900 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [176] total 176 [2018-07-25 08:56:30,901 INFO L451 AbstractCegarLoop]: Interpolant automaton has 178 states [2018-07-25 08:56:30,902 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 178 interpolants. [2018-07-25 08:56:30,903 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15753, Invalid=15753, Unknown=0, NotChecked=0, Total=31506 [2018-07-25 08:56:30,903 INFO L87 Difference]: Start difference. First operand 354 states and 354 transitions. Second operand 178 states. [2018-07-25 08:56:32,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:32,149 INFO L93 Difference]: Finished difference Result 357 states and 357 transitions. [2018-07-25 08:56:32,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2018-07-25 08:56:32,150 INFO L78 Accepts]: Start accepts. Automaton has 178 states. Word has length 353 [2018-07-25 08:56:32,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:32,150 INFO L225 Difference]: With dead ends: 357 [2018-07-25 08:56:32,150 INFO L226 Difference]: Without dead ends: 356 [2018-07-25 08:56:32,152 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15753, Invalid=15753, Unknown=0, NotChecked=0, Total=31506 [2018-07-25 08:56:32,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-07-25 08:56:32,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-07-25 08:56:32,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-07-25 08:56:32,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 356 transitions. [2018-07-25 08:56:32,156 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 356 transitions. Word has length 353 [2018-07-25 08:56:32,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:32,156 INFO L472 AbstractCegarLoop]: Abstraction has 356 states and 356 transitions. [2018-07-25 08:56:32,156 INFO L473 AbstractCegarLoop]: Interpolant automaton has 178 states. [2018-07-25 08:56:32,156 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 356 transitions. [2018-07-25 08:56:32,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2018-07-25 08:56:32,157 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:32,157 INFO L354 BasicCegarLoop]: trace histogram [177, 176, 1, 1] [2018-07-25 08:56:32,157 INFO L415 AbstractCegarLoop]: === Iteration 177 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:32,158 INFO L82 PathProgramCache]: Analyzing trace with hash -393769408, now seen corresponding path program 176 times [2018-07-25 08:56:32,158 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:32,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:33,384 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 08:56:33,384 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:33,385 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [177] total 177 [2018-07-25 08:56:33,385 INFO L451 AbstractCegarLoop]: Interpolant automaton has 179 states [2018-07-25 08:56:33,387 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 179 interpolants. [2018-07-25 08:56:33,388 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15931, Invalid=15931, Unknown=0, NotChecked=0, Total=31862 [2018-07-25 08:56:33,388 INFO L87 Difference]: Start difference. First operand 356 states and 356 transitions. Second operand 179 states. [2018-07-25 08:56:34,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:34,217 INFO L93 Difference]: Finished difference Result 359 states and 359 transitions. [2018-07-25 08:56:34,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2018-07-25 08:56:34,217 INFO L78 Accepts]: Start accepts. Automaton has 179 states. Word has length 355 [2018-07-25 08:56:34,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:34,218 INFO L225 Difference]: With dead ends: 359 [2018-07-25 08:56:34,218 INFO L226 Difference]: Without dead ends: 358 [2018-07-25 08:56:34,219 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15931, Invalid=15931, Unknown=0, NotChecked=0, Total=31862 [2018-07-25 08:56:34,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2018-07-25 08:56:34,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2018-07-25 08:56:34,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2018-07-25 08:56:34,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 358 transitions. [2018-07-25 08:56:34,224 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 358 transitions. Word has length 355 [2018-07-25 08:56:34,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:34,224 INFO L472 AbstractCegarLoop]: Abstraction has 358 states and 358 transitions. [2018-07-25 08:56:34,224 INFO L473 AbstractCegarLoop]: Interpolant automaton has 179 states. [2018-07-25 08:56:34,224 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 358 transitions. [2018-07-25 08:56:34,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2018-07-25 08:56:34,225 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:34,225 INFO L354 BasicCegarLoop]: trace histogram [178, 177, 1, 1] [2018-07-25 08:56:34,225 INFO L415 AbstractCegarLoop]: === Iteration 178 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:34,225 INFO L82 PathProgramCache]: Analyzing trace with hash -455277950, now seen corresponding path program 177 times [2018-07-25 08:56:34,225 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:34,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:35,444 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 08:56:35,445 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:35,445 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [178] total 178 [2018-07-25 08:56:35,445 INFO L451 AbstractCegarLoop]: Interpolant automaton has 180 states [2018-07-25 08:56:35,447 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2018-07-25 08:56:35,447 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16110, Invalid=16110, Unknown=0, NotChecked=0, Total=32220 [2018-07-25 08:56:35,448 INFO L87 Difference]: Start difference. First operand 358 states and 358 transitions. Second operand 180 states. [2018-07-25 08:56:35,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:35,949 INFO L93 Difference]: Finished difference Result 361 states and 361 transitions. [2018-07-25 08:56:35,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2018-07-25 08:56:35,949 INFO L78 Accepts]: Start accepts. Automaton has 180 states. Word has length 357 [2018-07-25 08:56:35,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:35,950 INFO L225 Difference]: With dead ends: 361 [2018-07-25 08:56:35,950 INFO L226 Difference]: Without dead ends: 360 [2018-07-25 08:56:35,952 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=16110, Invalid=16110, Unknown=0, NotChecked=0, Total=32220 [2018-07-25 08:56:35,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2018-07-25 08:56:35,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2018-07-25 08:56:35,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360 states. [2018-07-25 08:56:35,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 360 transitions. [2018-07-25 08:56:35,957 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 360 transitions. Word has length 357 [2018-07-25 08:56:35,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:35,957 INFO L472 AbstractCegarLoop]: Abstraction has 360 states and 360 transitions. [2018-07-25 08:56:35,957 INFO L473 AbstractCegarLoop]: Interpolant automaton has 180 states. [2018-07-25 08:56:35,957 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 360 transitions. [2018-07-25 08:56:35,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2018-07-25 08:56:35,958 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:35,958 INFO L354 BasicCegarLoop]: trace histogram [179, 178, 1, 1] [2018-07-25 08:56:35,959 INFO L415 AbstractCegarLoop]: === Iteration 179 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:35,959 INFO L82 PathProgramCache]: Analyzing trace with hash 564555332, now seen corresponding path program 178 times [2018-07-25 08:56:35,959 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:36,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:37,198 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 08:56:37,198 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:37,198 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [179] total 179 [2018-07-25 08:56:37,199 INFO L451 AbstractCegarLoop]: Interpolant automaton has 181 states [2018-07-25 08:56:37,202 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 181 interpolants. [2018-07-25 08:56:37,204 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16290, Invalid=16290, Unknown=0, NotChecked=0, Total=32580 [2018-07-25 08:56:37,204 INFO L87 Difference]: Start difference. First operand 360 states and 360 transitions. Second operand 181 states. [2018-07-25 08:56:38,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:38,648 INFO L93 Difference]: Finished difference Result 363 states and 363 transitions. [2018-07-25 08:56:38,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2018-07-25 08:56:38,648 INFO L78 Accepts]: Start accepts. Automaton has 181 states. Word has length 359 [2018-07-25 08:56:38,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:38,649 INFO L225 Difference]: With dead ends: 363 [2018-07-25 08:56:38,649 INFO L226 Difference]: Without dead ends: 362 [2018-07-25 08:56:38,651 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=16290, Invalid=16290, Unknown=0, NotChecked=0, Total=32580 [2018-07-25 08:56:38,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2018-07-25 08:56:38,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2018-07-25 08:56:38,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2018-07-25 08:56:38,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 362 transitions. [2018-07-25 08:56:38,655 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 362 transitions. Word has length 359 [2018-07-25 08:56:38,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:38,656 INFO L472 AbstractCegarLoop]: Abstraction has 362 states and 362 transitions. [2018-07-25 08:56:38,656 INFO L473 AbstractCegarLoop]: Interpolant automaton has 181 states. [2018-07-25 08:56:38,656 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 362 transitions. [2018-07-25 08:56:38,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2018-07-25 08:56:38,657 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:38,657 INFO L354 BasicCegarLoop]: trace histogram [180, 179, 1, 1] [2018-07-25 08:56:38,657 INFO L415 AbstractCegarLoop]: === Iteration 180 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:38,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1371795846, now seen corresponding path program 179 times [2018-07-25 08:56:38,657 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:38,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:39,902 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 08:56:39,903 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:39,903 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [180] total 180 [2018-07-25 08:56:39,903 INFO L451 AbstractCegarLoop]: Interpolant automaton has 182 states [2018-07-25 08:56:39,905 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 182 interpolants. [2018-07-25 08:56:39,905 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16471, Invalid=16471, Unknown=0, NotChecked=0, Total=32942 [2018-07-25 08:56:39,905 INFO L87 Difference]: Start difference. First operand 362 states and 362 transitions. Second operand 182 states. [2018-07-25 08:56:40,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:40,702 INFO L93 Difference]: Finished difference Result 365 states and 365 transitions. [2018-07-25 08:56:40,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2018-07-25 08:56:40,702 INFO L78 Accepts]: Start accepts. Automaton has 182 states. Word has length 361 [2018-07-25 08:56:40,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:40,703 INFO L225 Difference]: With dead ends: 365 [2018-07-25 08:56:40,703 INFO L226 Difference]: Without dead ends: 364 [2018-07-25 08:56:40,704 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=16471, Invalid=16471, Unknown=0, NotChecked=0, Total=32942 [2018-07-25 08:56:40,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2018-07-25 08:56:40,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2018-07-25 08:56:40,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2018-07-25 08:56:40,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 364 transitions. [2018-07-25 08:56:40,708 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 364 transitions. Word has length 361 [2018-07-25 08:56:40,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:40,708 INFO L472 AbstractCegarLoop]: Abstraction has 364 states and 364 transitions. [2018-07-25 08:56:40,708 INFO L473 AbstractCegarLoop]: Interpolant automaton has 182 states. [2018-07-25 08:56:40,708 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 364 transitions. [2018-07-25 08:56:40,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2018-07-25 08:56:40,709 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:40,710 INFO L354 BasicCegarLoop]: trace histogram [181, 180, 1, 1] [2018-07-25 08:56:40,710 INFO L415 AbstractCegarLoop]: === Iteration 181 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:40,710 INFO L82 PathProgramCache]: Analyzing trace with hash -259150776, now seen corresponding path program 180 times [2018-07-25 08:56:40,710 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:40,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:42,040 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 08:56:42,040 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:42,040 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [181] total 181 [2018-07-25 08:56:42,041 INFO L451 AbstractCegarLoop]: Interpolant automaton has 183 states [2018-07-25 08:56:42,043 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 183 interpolants. [2018-07-25 08:56:42,045 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16653, Invalid=16653, Unknown=0, NotChecked=0, Total=33306 [2018-07-25 08:56:42,045 INFO L87 Difference]: Start difference. First operand 364 states and 364 transitions. Second operand 183 states. [2018-07-25 08:56:43,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:43,203 INFO L93 Difference]: Finished difference Result 367 states and 367 transitions. [2018-07-25 08:56:43,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2018-07-25 08:56:43,203 INFO L78 Accepts]: Start accepts. Automaton has 183 states. Word has length 363 [2018-07-25 08:56:43,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:43,204 INFO L225 Difference]: With dead ends: 367 [2018-07-25 08:56:43,204 INFO L226 Difference]: Without dead ends: 366 [2018-07-25 08:56:43,206 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=16653, Invalid=16653, Unknown=0, NotChecked=0, Total=33306 [2018-07-25 08:56:43,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2018-07-25 08:56:43,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 366. [2018-07-25 08:56:43,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2018-07-25 08:56:43,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 366 transitions. [2018-07-25 08:56:43,212 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 366 transitions. Word has length 363 [2018-07-25 08:56:43,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:43,212 INFO L472 AbstractCegarLoop]: Abstraction has 366 states and 366 transitions. [2018-07-25 08:56:43,212 INFO L473 AbstractCegarLoop]: Interpolant automaton has 183 states. [2018-07-25 08:56:43,212 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 366 transitions. [2018-07-25 08:56:43,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2018-07-25 08:56:43,213 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:43,213 INFO L354 BasicCegarLoop]: trace histogram [182, 181, 1, 1] [2018-07-25 08:56:43,213 INFO L415 AbstractCegarLoop]: === Iteration 182 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:43,214 INFO L82 PathProgramCache]: Analyzing trace with hash 64208522, now seen corresponding path program 181 times [2018-07-25 08:56:43,214 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:43,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:44,686 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 08:56:44,686 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:44,686 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [182] total 182 [2018-07-25 08:56:44,687 INFO L451 AbstractCegarLoop]: Interpolant automaton has 184 states [2018-07-25 08:56:44,688 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2018-07-25 08:56:44,689 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2018-07-25 08:56:44,689 INFO L87 Difference]: Start difference. First operand 366 states and 366 transitions. Second operand 184 states. [2018-07-25 08:56:46,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:46,337 INFO L93 Difference]: Finished difference Result 369 states and 369 transitions. [2018-07-25 08:56:46,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2018-07-25 08:56:46,337 INFO L78 Accepts]: Start accepts. Automaton has 184 states. Word has length 365 [2018-07-25 08:56:46,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:46,338 INFO L225 Difference]: With dead ends: 369 [2018-07-25 08:56:46,338 INFO L226 Difference]: Without dead ends: 368 [2018-07-25 08:56:46,339 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2018-07-25 08:56:46,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2018-07-25 08:56:46,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 368. [2018-07-25 08:56:46,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2018-07-25 08:56:46,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 368 transitions. [2018-07-25 08:56:46,344 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 368 transitions. Word has length 365 [2018-07-25 08:56:46,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:46,344 INFO L472 AbstractCegarLoop]: Abstraction has 368 states and 368 transitions. [2018-07-25 08:56:46,344 INFO L473 AbstractCegarLoop]: Interpolant automaton has 184 states. [2018-07-25 08:56:46,344 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 368 transitions. [2018-07-25 08:56:46,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2018-07-25 08:56:46,345 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:46,346 INFO L354 BasicCegarLoop]: trace histogram [183, 182, 1, 1] [2018-07-25 08:56:46,346 INFO L415 AbstractCegarLoop]: === Iteration 183 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:46,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1574848588, now seen corresponding path program 182 times [2018-07-25 08:56:46,346 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:46,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:47,794 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 08:56:47,795 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:47,795 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [183] total 183 [2018-07-25 08:56:47,795 INFO L451 AbstractCegarLoop]: Interpolant automaton has 185 states [2018-07-25 08:56:47,798 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 185 interpolants. [2018-07-25 08:56:47,799 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17020, Invalid=17020, Unknown=0, NotChecked=0, Total=34040 [2018-07-25 08:56:47,799 INFO L87 Difference]: Start difference. First operand 368 states and 368 transitions. Second operand 185 states. [2018-07-25 08:56:48,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:48,539 INFO L93 Difference]: Finished difference Result 371 states and 371 transitions. [2018-07-25 08:56:48,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2018-07-25 08:56:48,539 INFO L78 Accepts]: Start accepts. Automaton has 185 states. Word has length 367 [2018-07-25 08:56:48,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:48,540 INFO L225 Difference]: With dead ends: 371 [2018-07-25 08:56:48,540 INFO L226 Difference]: Without dead ends: 370 [2018-07-25 08:56:48,541 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=17020, Invalid=17020, Unknown=0, NotChecked=0, Total=34040 [2018-07-25 08:56:48,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2018-07-25 08:56:48,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 370. [2018-07-25 08:56:48,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 370 states. [2018-07-25 08:56:48,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 370 transitions. [2018-07-25 08:56:48,546 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 370 transitions. Word has length 367 [2018-07-25 08:56:48,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:48,546 INFO L472 AbstractCegarLoop]: Abstraction has 370 states and 370 transitions. [2018-07-25 08:56:48,546 INFO L473 AbstractCegarLoop]: Interpolant automaton has 185 states. [2018-07-25 08:56:48,546 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 370 transitions. [2018-07-25 08:56:48,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2018-07-25 08:56:48,548 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:48,548 INFO L354 BasicCegarLoop]: trace histogram [184, 183, 1, 1] [2018-07-25 08:56:48,548 INFO L415 AbstractCegarLoop]: === Iteration 184 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:48,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1601005966, now seen corresponding path program 183 times [2018-07-25 08:56:48,549 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:48,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:50,019 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 08:56:50,020 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:50,020 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [184] total 184 [2018-07-25 08:56:50,020 INFO L451 AbstractCegarLoop]: Interpolant automaton has 186 states [2018-07-25 08:56:50,022 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 186 interpolants. [2018-07-25 08:56:50,023 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17205, Invalid=17205, Unknown=0, NotChecked=0, Total=34410 [2018-07-25 08:56:50,023 INFO L87 Difference]: Start difference. First operand 370 states and 370 transitions. Second operand 186 states. [2018-07-25 08:56:51,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:51,761 INFO L93 Difference]: Finished difference Result 373 states and 373 transitions. [2018-07-25 08:56:51,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2018-07-25 08:56:51,761 INFO L78 Accepts]: Start accepts. Automaton has 186 states. Word has length 369 [2018-07-25 08:56:51,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:51,762 INFO L225 Difference]: With dead ends: 373 [2018-07-25 08:56:51,762 INFO L226 Difference]: Without dead ends: 372 [2018-07-25 08:56:51,763 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=17205, Invalid=17205, Unknown=0, NotChecked=0, Total=34410 [2018-07-25 08:56:51,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2018-07-25 08:56:51,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 372. [2018-07-25 08:56:51,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2018-07-25 08:56:51,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 372 transitions. [2018-07-25 08:56:51,768 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 372 transitions. Word has length 369 [2018-07-25 08:56:51,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:51,768 INFO L472 AbstractCegarLoop]: Abstraction has 372 states and 372 transitions. [2018-07-25 08:56:51,768 INFO L473 AbstractCegarLoop]: Interpolant automaton has 186 states. [2018-07-25 08:56:51,768 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 372 transitions. [2018-07-25 08:56:51,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2018-07-25 08:56:51,770 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:51,770 INFO L354 BasicCegarLoop]: trace histogram [185, 184, 1, 1] [2018-07-25 08:56:51,770 INFO L415 AbstractCegarLoop]: === Iteration 185 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:51,770 INFO L82 PathProgramCache]: Analyzing trace with hash 968442448, now seen corresponding path program 184 times [2018-07-25 08:56:51,770 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:51,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:53,265 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 08:56:53,265 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:53,265 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [185] total 185 [2018-07-25 08:56:53,266 INFO L451 AbstractCegarLoop]: Interpolant automaton has 187 states [2018-07-25 08:56:53,268 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 187 interpolants. [2018-07-25 08:56:53,270 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17391, Invalid=17391, Unknown=0, NotChecked=0, Total=34782 [2018-07-25 08:56:53,270 INFO L87 Difference]: Start difference. First operand 372 states and 372 transitions. Second operand 187 states. [2018-07-25 08:56:54,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:54,432 INFO L93 Difference]: Finished difference Result 375 states and 375 transitions. [2018-07-25 08:56:54,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2018-07-25 08:56:54,432 INFO L78 Accepts]: Start accepts. Automaton has 187 states. Word has length 371 [2018-07-25 08:56:54,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:54,433 INFO L225 Difference]: With dead ends: 375 [2018-07-25 08:56:54,433 INFO L226 Difference]: Without dead ends: 374 [2018-07-25 08:56:54,435 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=17391, Invalid=17391, Unknown=0, NotChecked=0, Total=34782 [2018-07-25 08:56:54,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2018-07-25 08:56:54,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2018-07-25 08:56:54,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 374 states. [2018-07-25 08:56:54,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 374 transitions. [2018-07-25 08:56:54,440 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 374 transitions. Word has length 371 [2018-07-25 08:56:54,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:54,440 INFO L472 AbstractCegarLoop]: Abstraction has 374 states and 374 transitions. [2018-07-25 08:56:54,440 INFO L473 AbstractCegarLoop]: Interpolant automaton has 187 states. [2018-07-25 08:56:54,440 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 374 transitions. [2018-07-25 08:56:54,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2018-07-25 08:56:54,441 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:54,442 INFO L354 BasicCegarLoop]: trace histogram [186, 185, 1, 1] [2018-07-25 08:56:54,442 INFO L415 AbstractCegarLoop]: === Iteration 186 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:54,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1334709614, now seen corresponding path program 185 times [2018-07-25 08:56:54,442 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:54,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:55,959 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 08:56:55,959 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:55,959 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [186] total 186 [2018-07-25 08:56:55,960 INFO L451 AbstractCegarLoop]: Interpolant automaton has 188 states [2018-07-25 08:56:55,962 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2018-07-25 08:56:55,963 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17578, Invalid=17578, Unknown=0, NotChecked=0, Total=35156 [2018-07-25 08:56:55,963 INFO L87 Difference]: Start difference. First operand 374 states and 374 transitions. Second operand 188 states. [2018-07-25 08:56:57,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:57,160 INFO L93 Difference]: Finished difference Result 377 states and 377 transitions. [2018-07-25 08:56:57,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2018-07-25 08:56:57,160 INFO L78 Accepts]: Start accepts. Automaton has 188 states. Word has length 373 [2018-07-25 08:56:57,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:57,161 INFO L225 Difference]: With dead ends: 377 [2018-07-25 08:56:57,161 INFO L226 Difference]: Without dead ends: 376 [2018-07-25 08:56:57,162 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=17578, Invalid=17578, Unknown=0, NotChecked=0, Total=35156 [2018-07-25 08:56:57,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2018-07-25 08:56:57,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2018-07-25 08:56:57,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2018-07-25 08:56:57,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 376 transitions. [2018-07-25 08:56:57,167 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 376 transitions. Word has length 373 [2018-07-25 08:56:57,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:57,167 INFO L472 AbstractCegarLoop]: Abstraction has 376 states and 376 transitions. [2018-07-25 08:56:57,167 INFO L473 AbstractCegarLoop]: Interpolant automaton has 188 states. [2018-07-25 08:56:57,168 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 376 transitions. [2018-07-25 08:56:57,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2018-07-25 08:56:57,169 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:57,169 INFO L354 BasicCegarLoop]: trace histogram [187, 186, 1, 1] [2018-07-25 08:56:57,169 INFO L415 AbstractCegarLoop]: === Iteration 187 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:57,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1539283540, now seen corresponding path program 186 times [2018-07-25 08:56:57,169 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:57,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:58,691 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 08:56:58,691 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:58,691 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [187] total 187 [2018-07-25 08:56:58,691 INFO L451 AbstractCegarLoop]: Interpolant automaton has 189 states [2018-07-25 08:56:58,694 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 189 interpolants. [2018-07-25 08:56:58,695 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17766, Invalid=17766, Unknown=0, NotChecked=0, Total=35532 [2018-07-25 08:56:58,696 INFO L87 Difference]: Start difference. First operand 376 states and 376 transitions. Second operand 189 states. [2018-07-25 08:57:00,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:00,837 INFO L93 Difference]: Finished difference Result 379 states and 379 transitions. [2018-07-25 08:57:00,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2018-07-25 08:57:00,837 INFO L78 Accepts]: Start accepts. Automaton has 189 states. Word has length 375 [2018-07-25 08:57:00,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:00,838 INFO L225 Difference]: With dead ends: 379 [2018-07-25 08:57:00,838 INFO L226 Difference]: Without dead ends: 378 [2018-07-25 08:57:00,840 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=17766, Invalid=17766, Unknown=0, NotChecked=0, Total=35532 [2018-07-25 08:57:00,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2018-07-25 08:57:00,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 378. [2018-07-25 08:57:00,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2018-07-25 08:57:00,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 378 transitions. [2018-07-25 08:57:00,845 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 378 transitions. Word has length 375 [2018-07-25 08:57:00,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:00,845 INFO L472 AbstractCegarLoop]: Abstraction has 378 states and 378 transitions. [2018-07-25 08:57:00,845 INFO L473 AbstractCegarLoop]: Interpolant automaton has 189 states. [2018-07-25 08:57:00,845 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 378 transitions. [2018-07-25 08:57:00,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2018-07-25 08:57:00,846 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:00,847 INFO L354 BasicCegarLoop]: trace histogram [188, 187, 1, 1] [2018-07-25 08:57:00,847 INFO L415 AbstractCegarLoop]: === Iteration 188 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:00,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1782733206, now seen corresponding path program 187 times [2018-07-25 08:57:00,847 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:01,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:02,426 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 08:57:02,426 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:02,426 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [188] total 188 [2018-07-25 08:57:02,427 INFO L451 AbstractCegarLoop]: Interpolant automaton has 190 states [2018-07-25 08:57:02,429 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2018-07-25 08:57:02,430 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17955, Invalid=17955, Unknown=0, NotChecked=0, Total=35910 [2018-07-25 08:57:02,431 INFO L87 Difference]: Start difference. First operand 378 states and 378 transitions. Second operand 190 states. [2018-07-25 08:57:02,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:02,967 INFO L93 Difference]: Finished difference Result 381 states and 381 transitions. [2018-07-25 08:57:02,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2018-07-25 08:57:02,968 INFO L78 Accepts]: Start accepts. Automaton has 190 states. Word has length 377 [2018-07-25 08:57:02,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:02,968 INFO L225 Difference]: With dead ends: 381 [2018-07-25 08:57:02,968 INFO L226 Difference]: Without dead ends: 380 [2018-07-25 08:57:02,970 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=17955, Invalid=17955, Unknown=0, NotChecked=0, Total=35910 [2018-07-25 08:57:02,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2018-07-25 08:57:02,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2018-07-25 08:57:02,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2018-07-25 08:57:02,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 380 transitions. [2018-07-25 08:57:02,974 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 380 transitions. Word has length 377 [2018-07-25 08:57:02,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:02,974 INFO L472 AbstractCegarLoop]: Abstraction has 380 states and 380 transitions. [2018-07-25 08:57:02,974 INFO L473 AbstractCegarLoop]: Interpolant automaton has 190 states. [2018-07-25 08:57:02,975 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 380 transitions. [2018-07-25 08:57:02,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2018-07-25 08:57:02,976 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:02,976 INFO L354 BasicCegarLoop]: trace histogram [189, 188, 1, 1] [2018-07-25 08:57:02,976 INFO L415 AbstractCegarLoop]: === Iteration 189 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:02,977 INFO L82 PathProgramCache]: Analyzing trace with hash -485339048, now seen corresponding path program 188 times [2018-07-25 08:57:02,977 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:03,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:04,418 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 08:57:04,418 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:04,419 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [189] total 189 [2018-07-25 08:57:04,419 INFO L451 AbstractCegarLoop]: Interpolant automaton has 191 states [2018-07-25 08:57:04,421 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 191 interpolants. [2018-07-25 08:57:04,422 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18145, Invalid=18145, Unknown=0, NotChecked=0, Total=36290 [2018-07-25 08:57:04,422 INFO L87 Difference]: Start difference. First operand 380 states and 380 transitions. Second operand 191 states. [2018-07-25 08:57:05,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:05,415 INFO L93 Difference]: Finished difference Result 383 states and 383 transitions. [2018-07-25 08:57:05,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2018-07-25 08:57:05,415 INFO L78 Accepts]: Start accepts. Automaton has 191 states. Word has length 379 [2018-07-25 08:57:05,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:05,416 INFO L225 Difference]: With dead ends: 383 [2018-07-25 08:57:05,416 INFO L226 Difference]: Without dead ends: 382 [2018-07-25 08:57:05,417 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=18145, Invalid=18145, Unknown=0, NotChecked=0, Total=36290 [2018-07-25 08:57:05,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2018-07-25 08:57:05,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2018-07-25 08:57:05,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2018-07-25 08:57:05,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 382 transitions. [2018-07-25 08:57:05,422 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 382 transitions. Word has length 379 [2018-07-25 08:57:05,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:05,422 INFO L472 AbstractCegarLoop]: Abstraction has 382 states and 382 transitions. [2018-07-25 08:57:05,422 INFO L473 AbstractCegarLoop]: Interpolant automaton has 191 states. [2018-07-25 08:57:05,422 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 382 transitions. [2018-07-25 08:57:05,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2018-07-25 08:57:05,423 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:05,423 INFO L354 BasicCegarLoop]: trace histogram [190, 189, 1, 1] [2018-07-25 08:57:05,424 INFO L415 AbstractCegarLoop]: === Iteration 190 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:05,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1740611226, now seen corresponding path program 189 times [2018-07-25 08:57:05,424 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:05,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:06,849 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 08:57:06,850 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:06,850 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [190] total 190 [2018-07-25 08:57:06,850 INFO L451 AbstractCegarLoop]: Interpolant automaton has 192 states [2018-07-25 08:57:06,853 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2018-07-25 08:57:06,854 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2018-07-25 08:57:06,854 INFO L87 Difference]: Start difference. First operand 382 states and 382 transitions. Second operand 192 states. [2018-07-25 08:57:09,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:09,185 INFO L93 Difference]: Finished difference Result 385 states and 385 transitions. [2018-07-25 08:57:09,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2018-07-25 08:57:09,185 INFO L78 Accepts]: Start accepts. Automaton has 192 states. Word has length 381 [2018-07-25 08:57:09,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:09,186 INFO L225 Difference]: With dead ends: 385 [2018-07-25 08:57:09,186 INFO L226 Difference]: Without dead ends: 384 [2018-07-25 08:57:09,188 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2018-07-25 08:57:09,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2018-07-25 08:57:09,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 384. [2018-07-25 08:57:09,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 384 states. [2018-07-25 08:57:09,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 384 transitions. [2018-07-25 08:57:09,194 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 384 transitions. Word has length 381 [2018-07-25 08:57:09,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:09,195 INFO L472 AbstractCegarLoop]: Abstraction has 384 states and 384 transitions. [2018-07-25 08:57:09,195 INFO L473 AbstractCegarLoop]: Interpolant automaton has 192 states. [2018-07-25 08:57:09,195 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 384 transitions. [2018-07-25 08:57:09,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2018-07-25 08:57:09,196 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:09,197 INFO L354 BasicCegarLoop]: trace histogram [191, 190, 1, 1] [2018-07-25 08:57:09,197 INFO L415 AbstractCegarLoop]: === Iteration 191 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:09,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1985111132, now seen corresponding path program 190 times [2018-07-25 08:57:09,197 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:09,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:10,849 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 08:57:10,849 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:10,849 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [191] total 191 [2018-07-25 08:57:10,850 INFO L451 AbstractCegarLoop]: Interpolant automaton has 193 states [2018-07-25 08:57:10,852 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2018-07-25 08:57:10,853 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2018-07-25 08:57:10,853 INFO L87 Difference]: Start difference. First operand 384 states and 384 transitions. Second operand 193 states. [2018-07-25 08:57:12,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:12,048 INFO L93 Difference]: Finished difference Result 387 states and 387 transitions. [2018-07-25 08:57:12,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2018-07-25 08:57:12,048 INFO L78 Accepts]: Start accepts. Automaton has 193 states. Word has length 383 [2018-07-25 08:57:12,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:12,049 INFO L225 Difference]: With dead ends: 387 [2018-07-25 08:57:12,049 INFO L226 Difference]: Without dead ends: 386 [2018-07-25 08:57:12,050 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2018-07-25 08:57:12,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2018-07-25 08:57:12,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2018-07-25 08:57:12,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2018-07-25 08:57:12,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 386 transitions. [2018-07-25 08:57:12,055 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 386 transitions. Word has length 383 [2018-07-25 08:57:12,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:12,056 INFO L472 AbstractCegarLoop]: Abstraction has 386 states and 386 transitions. [2018-07-25 08:57:12,056 INFO L473 AbstractCegarLoop]: Interpolant automaton has 193 states. [2018-07-25 08:57:12,056 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 386 transitions. [2018-07-25 08:57:12,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2018-07-25 08:57:12,057 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:12,057 INFO L354 BasicCegarLoop]: trace histogram [192, 191, 1, 1] [2018-07-25 08:57:12,058 INFO L415 AbstractCegarLoop]: === Iteration 192 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:12,058 INFO L82 PathProgramCache]: Analyzing trace with hash 726319518, now seen corresponding path program 191 times [2018-07-25 08:57:12,058 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:12,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:13,707 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 08:57:13,709 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:13,709 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [192] total 192 [2018-07-25 08:57:13,709 INFO L451 AbstractCegarLoop]: Interpolant automaton has 194 states [2018-07-25 08:57:13,713 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2018-07-25 08:57:13,715 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18721, Invalid=18721, Unknown=0, NotChecked=0, Total=37442 [2018-07-25 08:57:13,715 INFO L87 Difference]: Start difference. First operand 386 states and 386 transitions. Second operand 194 states. [2018-07-25 08:57:14,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:14,309 INFO L93 Difference]: Finished difference Result 389 states and 389 transitions. [2018-07-25 08:57:14,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2018-07-25 08:57:14,309 INFO L78 Accepts]: Start accepts. Automaton has 194 states. Word has length 385 [2018-07-25 08:57:14,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:14,310 INFO L225 Difference]: With dead ends: 389 [2018-07-25 08:57:14,310 INFO L226 Difference]: Without dead ends: 388 [2018-07-25 08:57:14,312 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=18721, Invalid=18721, Unknown=0, NotChecked=0, Total=37442 [2018-07-25 08:57:14,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2018-07-25 08:57:14,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 388. [2018-07-25 08:57:14,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2018-07-25 08:57:14,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 388 transitions. [2018-07-25 08:57:14,318 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 388 transitions. Word has length 385 [2018-07-25 08:57:14,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:14,318 INFO L472 AbstractCegarLoop]: Abstraction has 388 states and 388 transitions. [2018-07-25 08:57:14,318 INFO L473 AbstractCegarLoop]: Interpolant automaton has 194 states. [2018-07-25 08:57:14,318 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 388 transitions. [2018-07-25 08:57:14,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2018-07-25 08:57:14,320 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:14,320 INFO L354 BasicCegarLoop]: trace histogram [193, 192, 1, 1] [2018-07-25 08:57:14,320 INFO L415 AbstractCegarLoop]: === Iteration 193 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:14,321 INFO L82 PathProgramCache]: Analyzing trace with hash -2086611360, now seen corresponding path program 192 times [2018-07-25 08:57:14,321 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:14,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:15,973 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 08:57:15,973 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:15,974 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [193] total 193 [2018-07-25 08:57:15,974 INFO L451 AbstractCegarLoop]: Interpolant automaton has 195 states [2018-07-25 08:57:15,977 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 195 interpolants. [2018-07-25 08:57:15,979 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18915, Invalid=18915, Unknown=0, NotChecked=0, Total=37830 [2018-07-25 08:57:15,980 INFO L87 Difference]: Start difference. First operand 388 states and 388 transitions. Second operand 195 states. [2018-07-25 08:57:16,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:16,992 INFO L93 Difference]: Finished difference Result 391 states and 391 transitions. [2018-07-25 08:57:16,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2018-07-25 08:57:16,993 INFO L78 Accepts]: Start accepts. Automaton has 195 states. Word has length 387 [2018-07-25 08:57:16,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:16,993 INFO L225 Difference]: With dead ends: 391 [2018-07-25 08:57:16,994 INFO L226 Difference]: Without dead ends: 390 [2018-07-25 08:57:16,996 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=18915, Invalid=18915, Unknown=0, NotChecked=0, Total=37830 [2018-07-25 08:57:16,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2018-07-25 08:57:17,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 390. [2018-07-25 08:57:17,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 390 states. [2018-07-25 08:57:17,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 390 transitions. [2018-07-25 08:57:17,001 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 390 transitions. Word has length 387 [2018-07-25 08:57:17,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:17,002 INFO L472 AbstractCegarLoop]: Abstraction has 390 states and 390 transitions. [2018-07-25 08:57:17,002 INFO L473 AbstractCegarLoop]: Interpolant automaton has 195 states. [2018-07-25 08:57:17,002 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 390 transitions. [2018-07-25 08:57:17,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2018-07-25 08:57:17,003 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:17,003 INFO L354 BasicCegarLoop]: trace histogram [194, 193, 1, 1] [2018-07-25 08:57:17,003 INFO L415 AbstractCegarLoop]: === Iteration 194 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:17,003 INFO L82 PathProgramCache]: Analyzing trace with hash 516211362, now seen corresponding path program 193 times [2018-07-25 08:57:17,003 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:17,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:18,764 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 08:57:18,765 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:18,765 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [194] total 194 [2018-07-25 08:57:18,766 INFO L451 AbstractCegarLoop]: Interpolant automaton has 196 states [2018-07-25 08:57:18,767 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2018-07-25 08:57:18,768 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19110, Invalid=19110, Unknown=0, NotChecked=0, Total=38220 [2018-07-25 08:57:18,768 INFO L87 Difference]: Start difference. First operand 390 states and 390 transitions. Second operand 196 states. [2018-07-25 08:57:20,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:20,065 INFO L93 Difference]: Finished difference Result 393 states and 393 transitions. [2018-07-25 08:57:20,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2018-07-25 08:57:20,065 INFO L78 Accepts]: Start accepts. Automaton has 196 states. Word has length 389 [2018-07-25 08:57:20,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:20,066 INFO L225 Difference]: With dead ends: 393 [2018-07-25 08:57:20,066 INFO L226 Difference]: Without dead ends: 392 [2018-07-25 08:57:20,067 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=19110, Invalid=19110, Unknown=0, NotChecked=0, Total=38220 [2018-07-25 08:57:20,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2018-07-25 08:57:20,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 392. [2018-07-25 08:57:20,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2018-07-25 08:57:20,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 392 transitions. [2018-07-25 08:57:20,071 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 392 transitions. Word has length 389 [2018-07-25 08:57:20,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:20,071 INFO L472 AbstractCegarLoop]: Abstraction has 392 states and 392 transitions. [2018-07-25 08:57:20,071 INFO L473 AbstractCegarLoop]: Interpolant automaton has 196 states. [2018-07-25 08:57:20,071 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 392 transitions. [2018-07-25 08:57:20,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2018-07-25 08:57:20,073 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:20,073 INFO L354 BasicCegarLoop]: trace histogram [195, 194, 1, 1] [2018-07-25 08:57:20,073 INFO L415 AbstractCegarLoop]: === Iteration 195 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:20,073 INFO L82 PathProgramCache]: Analyzing trace with hash -2137086364, now seen corresponding path program 194 times [2018-07-25 08:57:20,073 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:20,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:21,645 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 08:57:21,645 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:21,646 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [195] total 195 [2018-07-25 08:57:21,646 INFO L451 AbstractCegarLoop]: Interpolant automaton has 197 states [2018-07-25 08:57:21,648 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2018-07-25 08:57:21,650 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19306, Invalid=19306, Unknown=0, NotChecked=0, Total=38612 [2018-07-25 08:57:21,650 INFO L87 Difference]: Start difference. First operand 392 states and 392 transitions. Second operand 197 states. [2018-07-25 08:57:23,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:23,467 INFO L93 Difference]: Finished difference Result 395 states and 395 transitions. [2018-07-25 08:57:23,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2018-07-25 08:57:23,467 INFO L78 Accepts]: Start accepts. Automaton has 197 states. Word has length 391 [2018-07-25 08:57:23,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:23,468 INFO L225 Difference]: With dead ends: 395 [2018-07-25 08:57:23,468 INFO L226 Difference]: Without dead ends: 394 [2018-07-25 08:57:23,470 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=19306, Invalid=19306, Unknown=0, NotChecked=0, Total=38612 [2018-07-25 08:57:23,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2018-07-25 08:57:23,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2018-07-25 08:57:23,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2018-07-25 08:57:23,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 394 transitions. [2018-07-25 08:57:23,475 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 394 transitions. Word has length 391 [2018-07-25 08:57:23,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:23,475 INFO L472 AbstractCegarLoop]: Abstraction has 394 states and 394 transitions. [2018-07-25 08:57:23,475 INFO L473 AbstractCegarLoop]: Interpolant automaton has 197 states. [2018-07-25 08:57:23,475 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 394 transitions. [2018-07-25 08:57:23,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2018-07-25 08:57:23,477 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:23,477 INFO L354 BasicCegarLoop]: trace histogram [196, 195, 1, 1] [2018-07-25 08:57:23,477 INFO L415 AbstractCegarLoop]: === Iteration 196 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:23,478 INFO L82 PathProgramCache]: Analyzing trace with hash -745627226, now seen corresponding path program 195 times [2018-07-25 08:57:23,478 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:23,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:25,077 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 08:57:25,078 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:25,078 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [196] total 196 [2018-07-25 08:57:25,078 INFO L451 AbstractCegarLoop]: Interpolant automaton has 198 states [2018-07-25 08:57:25,081 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2018-07-25 08:57:25,082 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19503, Invalid=19503, Unknown=0, NotChecked=0, Total=39006 [2018-07-25 08:57:25,082 INFO L87 Difference]: Start difference. First operand 394 states and 394 transitions. Second operand 198 states. [2018-07-25 08:57:26,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:26,997 INFO L93 Difference]: Finished difference Result 397 states and 397 transitions. [2018-07-25 08:57:26,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2018-07-25 08:57:26,997 INFO L78 Accepts]: Start accepts. Automaton has 198 states. Word has length 393 [2018-07-25 08:57:26,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:26,997 INFO L225 Difference]: With dead ends: 397 [2018-07-25 08:57:26,998 INFO L226 Difference]: Without dead ends: 396 [2018-07-25 08:57:26,999 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=19503, Invalid=19503, Unknown=0, NotChecked=0, Total=39006 [2018-07-25 08:57:27,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2018-07-25 08:57:27,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 396. [2018-07-25 08:57:27,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 396 states. [2018-07-25 08:57:27,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 396 transitions. [2018-07-25 08:57:27,004 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 396 transitions. Word has length 393 [2018-07-25 08:57:27,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:27,004 INFO L472 AbstractCegarLoop]: Abstraction has 396 states and 396 transitions. [2018-07-25 08:57:27,004 INFO L473 AbstractCegarLoop]: Interpolant automaton has 198 states. [2018-07-25 08:57:27,004 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 396 transitions. [2018-07-25 08:57:27,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2018-07-25 08:57:27,005 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:27,006 INFO L354 BasicCegarLoop]: trace histogram [197, 196, 1, 1] [2018-07-25 08:57:27,006 INFO L415 AbstractCegarLoop]: === Iteration 197 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:27,006 INFO L82 PathProgramCache]: Analyzing trace with hash 711775336, now seen corresponding path program 196 times [2018-07-25 08:57:27,006 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:27,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:28,789 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 08:57:28,789 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:28,789 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [197] total 197 [2018-07-25 08:57:28,790 INFO L451 AbstractCegarLoop]: Interpolant automaton has 199 states [2018-07-25 08:57:28,791 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 199 interpolants. [2018-07-25 08:57:28,792 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19701, Invalid=19701, Unknown=0, NotChecked=0, Total=39402 [2018-07-25 08:57:28,792 INFO L87 Difference]: Start difference. First operand 396 states and 396 transitions. Second operand 199 states. [2018-07-25 08:57:31,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:31,120 INFO L93 Difference]: Finished difference Result 399 states and 399 transitions. [2018-07-25 08:57:31,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2018-07-25 08:57:31,121 INFO L78 Accepts]: Start accepts. Automaton has 199 states. Word has length 395 [2018-07-25 08:57:31,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:31,121 INFO L225 Difference]: With dead ends: 399 [2018-07-25 08:57:31,121 INFO L226 Difference]: Without dead ends: 398 [2018-07-25 08:57:31,122 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=19701, Invalid=19701, Unknown=0, NotChecked=0, Total=39402 [2018-07-25 08:57:31,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2018-07-25 08:57:31,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 398. [2018-07-25 08:57:31,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2018-07-25 08:57:31,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 398 transitions. [2018-07-25 08:57:31,128 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 398 transitions. Word has length 395 [2018-07-25 08:57:31,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:31,128 INFO L472 AbstractCegarLoop]: Abstraction has 398 states and 398 transitions. [2018-07-25 08:57:31,128 INFO L473 AbstractCegarLoop]: Interpolant automaton has 199 states. [2018-07-25 08:57:31,128 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 398 transitions. [2018-07-25 08:57:31,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2018-07-25 08:57:31,129 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:31,129 INFO L354 BasicCegarLoop]: trace histogram [198, 197, 1, 1] [2018-07-25 08:57:31,129 INFO L415 AbstractCegarLoop]: === Iteration 198 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:31,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1116298922, now seen corresponding path program 197 times [2018-07-25 08:57:31,130 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:31,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:32,927 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 08:57:32,928 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:32,928 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [198] total 198 [2018-07-25 08:57:32,928 INFO L451 AbstractCegarLoop]: Interpolant automaton has 200 states [2018-07-25 08:57:32,931 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2018-07-25 08:57:32,933 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19900, Invalid=19900, Unknown=0, NotChecked=0, Total=39800 [2018-07-25 08:57:32,934 INFO L87 Difference]: Start difference. First operand 398 states and 398 transitions. Second operand 200 states. [2018-07-25 08:57:35,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:35,660 INFO L93 Difference]: Finished difference Result 401 states and 401 transitions. [2018-07-25 08:57:35,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2018-07-25 08:57:35,660 INFO L78 Accepts]: Start accepts. Automaton has 200 states. Word has length 397 [2018-07-25 08:57:35,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:35,661 INFO L225 Difference]: With dead ends: 401 [2018-07-25 08:57:35,661 INFO L226 Difference]: Without dead ends: 400 [2018-07-25 08:57:35,663 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=19900, Invalid=19900, Unknown=0, NotChecked=0, Total=39800 [2018-07-25 08:57:35,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2018-07-25 08:57:35,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 400. [2018-07-25 08:57:35,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2018-07-25 08:57:35,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 400 transitions. [2018-07-25 08:57:35,669 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 400 transitions. Word has length 397 [2018-07-25 08:57:35,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:35,669 INFO L472 AbstractCegarLoop]: Abstraction has 400 states and 400 transitions. [2018-07-25 08:57:35,669 INFO L473 AbstractCegarLoop]: Interpolant automaton has 200 states. [2018-07-25 08:57:35,669 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 400 transitions. [2018-07-25 08:57:35,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2018-07-25 08:57:35,670 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:35,670 INFO L354 BasicCegarLoop]: trace histogram [199, 198, 1, 1] [2018-07-25 08:57:35,670 INFO L415 AbstractCegarLoop]: === Iteration 199 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:35,671 INFO L82 PathProgramCache]: Analyzing trace with hash -978558868, now seen corresponding path program 198 times [2018-07-25 08:57:35,671 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:35,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:37,500 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 08:57:37,501 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:37,501 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [199] total 199 [2018-07-25 08:57:37,501 INFO L451 AbstractCegarLoop]: Interpolant automaton has 201 states [2018-07-25 08:57:37,504 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 201 interpolants. [2018-07-25 08:57:37,505 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20100, Invalid=20100, Unknown=0, NotChecked=0, Total=40200 [2018-07-25 08:57:37,505 INFO L87 Difference]: Start difference. First operand 400 states and 400 transitions. Second operand 201 states. [2018-07-25 08:57:39,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:39,683 INFO L93 Difference]: Finished difference Result 403 states and 403 transitions. [2018-07-25 08:57:39,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2018-07-25 08:57:39,683 INFO L78 Accepts]: Start accepts. Automaton has 201 states. Word has length 399 [2018-07-25 08:57:39,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:39,683 INFO L225 Difference]: With dead ends: 403 [2018-07-25 08:57:39,684 INFO L226 Difference]: Without dead ends: 402 [2018-07-25 08:57:39,685 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=20100, Invalid=20100, Unknown=0, NotChecked=0, Total=40200 [2018-07-25 08:57:39,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2018-07-25 08:57:39,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 402. [2018-07-25 08:57:39,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 402 states. [2018-07-25 08:57:39,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 402 transitions. [2018-07-25 08:57:39,689 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 402 transitions. Word has length 399 [2018-07-25 08:57:39,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:39,690 INFO L472 AbstractCegarLoop]: Abstraction has 402 states and 402 transitions. [2018-07-25 08:57:39,690 INFO L473 AbstractCegarLoop]: Interpolant automaton has 201 states. [2018-07-25 08:57:39,690 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 402 transitions. [2018-07-25 08:57:39,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2018-07-25 08:57:39,691 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:39,691 INFO L354 BasicCegarLoop]: trace histogram [200, 199, 1, 1] [2018-07-25 08:57:39,691 INFO L415 AbstractCegarLoop]: === Iteration 200 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:39,692 INFO L82 PathProgramCache]: Analyzing trace with hash 202766766, now seen corresponding path program 199 times [2018-07-25 08:57:39,692 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:39,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:41,394 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 08:57:41,394 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:41,394 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [200] total 200 [2018-07-25 08:57:41,395 INFO L451 AbstractCegarLoop]: Interpolant automaton has 202 states [2018-07-25 08:57:41,396 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 202 interpolants. [2018-07-25 08:57:41,397 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20301, Invalid=20301, Unknown=0, NotChecked=0, Total=40602 [2018-07-25 08:57:41,397 INFO L87 Difference]: Start difference. First operand 402 states and 402 transitions. Second operand 202 states. [2018-07-25 08:57:43,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:43,245 INFO L93 Difference]: Finished difference Result 405 states and 405 transitions. [2018-07-25 08:57:43,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2018-07-25 08:57:43,246 INFO L78 Accepts]: Start accepts. Automaton has 202 states. Word has length 401 [2018-07-25 08:57:43,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:43,246 INFO L225 Difference]: With dead ends: 405 [2018-07-25 08:57:43,246 INFO L226 Difference]: Without dead ends: 404 [2018-07-25 08:57:43,247 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=20301, Invalid=20301, Unknown=0, NotChecked=0, Total=40602 [2018-07-25 08:57:43,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2018-07-25 08:57:43,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 404. [2018-07-25 08:57:43,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 404 states. [2018-07-25 08:57:43,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 404 transitions. [2018-07-25 08:57:43,252 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 404 transitions. Word has length 401 [2018-07-25 08:57:43,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:43,252 INFO L472 AbstractCegarLoop]: Abstraction has 404 states and 404 transitions. [2018-07-25 08:57:43,252 INFO L473 AbstractCegarLoop]: Interpolant automaton has 202 states. [2018-07-25 08:57:43,252 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 404 transitions. [2018-07-25 08:57:43,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2018-07-25 08:57:43,253 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:43,253 INFO L354 BasicCegarLoop]: trace histogram [201, 200, 1, 1] [2018-07-25 08:57:43,254 INFO L415 AbstractCegarLoop]: === Iteration 201 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:43,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1585334896, now seen corresponding path program 200 times [2018-07-25 08:57:43,254 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:43,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:44,956 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 08:57:44,957 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:44,957 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [201] total 201 [2018-07-25 08:57:44,957 INFO L451 AbstractCegarLoop]: Interpolant automaton has 203 states [2018-07-25 08:57:44,960 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2018-07-25 08:57:44,961 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20503, Invalid=20503, Unknown=0, NotChecked=0, Total=41006 [2018-07-25 08:57:44,961 INFO L87 Difference]: Start difference. First operand 404 states and 404 transitions. Second operand 203 states. [2018-07-25 08:57:46,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:46,864 INFO L93 Difference]: Finished difference Result 407 states and 407 transitions. [2018-07-25 08:57:46,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2018-07-25 08:57:46,864 INFO L78 Accepts]: Start accepts. Automaton has 203 states. Word has length 403 [2018-07-25 08:57:46,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:46,865 INFO L225 Difference]: With dead ends: 407 [2018-07-25 08:57:46,865 INFO L226 Difference]: Without dead ends: 406 [2018-07-25 08:57:46,868 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=20503, Invalid=20503, Unknown=0, NotChecked=0, Total=41006 [2018-07-25 08:57:46,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2018-07-25 08:57:46,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 406. [2018-07-25 08:57:46,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 406 states. [2018-07-25 08:57:46,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 406 transitions. [2018-07-25 08:57:46,873 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 406 transitions. Word has length 403 [2018-07-25 08:57:46,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:46,873 INFO L472 AbstractCegarLoop]: Abstraction has 406 states and 406 transitions. [2018-07-25 08:57:46,873 INFO L473 AbstractCegarLoop]: Interpolant automaton has 203 states. [2018-07-25 08:57:46,873 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 406 transitions. [2018-07-25 08:57:46,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2018-07-25 08:57:46,875 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:46,875 INFO L354 BasicCegarLoop]: trace histogram [202, 201, 1, 1] [2018-07-25 08:57:46,875 INFO L415 AbstractCegarLoop]: === Iteration 202 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:46,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1206553934, now seen corresponding path program 201 times [2018-07-25 08:57:46,875 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:47,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:48,786 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 08:57:48,787 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:48,787 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [202] total 202 [2018-07-25 08:57:48,787 INFO L451 AbstractCegarLoop]: Interpolant automaton has 204 states [2018-07-25 08:57:48,790 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2018-07-25 08:57:48,791 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20706, Invalid=20706, Unknown=0, NotChecked=0, Total=41412 [2018-07-25 08:57:48,791 INFO L87 Difference]: Start difference. First operand 406 states and 406 transitions. Second operand 204 states. [2018-07-25 08:57:49,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:49,643 INFO L93 Difference]: Finished difference Result 409 states and 409 transitions. [2018-07-25 08:57:49,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2018-07-25 08:57:49,643 INFO L78 Accepts]: Start accepts. Automaton has 204 states. Word has length 405 [2018-07-25 08:57:49,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:49,644 INFO L225 Difference]: With dead ends: 409 [2018-07-25 08:57:49,644 INFO L226 Difference]: Without dead ends: 408 [2018-07-25 08:57:49,646 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=20706, Invalid=20706, Unknown=0, NotChecked=0, Total=41412 [2018-07-25 08:57:49,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2018-07-25 08:57:49,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 408. [2018-07-25 08:57:49,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 408 states. [2018-07-25 08:57:49,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 408 transitions. [2018-07-25 08:57:49,653 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 408 transitions. Word has length 405 [2018-07-25 08:57:49,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:49,654 INFO L472 AbstractCegarLoop]: Abstraction has 408 states and 408 transitions. [2018-07-25 08:57:49,654 INFO L473 AbstractCegarLoop]: Interpolant automaton has 204 states. [2018-07-25 08:57:49,654 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 408 transitions. [2018-07-25 08:57:49,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2018-07-25 08:57:49,655 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:49,656 INFO L354 BasicCegarLoop]: trace histogram [203, 202, 1, 1] [2018-07-25 08:57:49,656 INFO L415 AbstractCegarLoop]: === Iteration 203 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:49,656 INFO L82 PathProgramCache]: Analyzing trace with hash 142840436, now seen corresponding path program 202 times [2018-07-25 08:57:49,656 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:49,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:51,598 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 08:57:51,598 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:51,599 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [203] total 203 [2018-07-25 08:57:51,599 INFO L451 AbstractCegarLoop]: Interpolant automaton has 205 states [2018-07-25 08:57:51,602 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 205 interpolants. [2018-07-25 08:57:51,604 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20910, Invalid=20910, Unknown=0, NotChecked=0, Total=41820 [2018-07-25 08:57:51,604 INFO L87 Difference]: Start difference. First operand 408 states and 408 transitions. Second operand 205 states. [2018-07-25 08:57:52,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:52,482 INFO L93 Difference]: Finished difference Result 411 states and 411 transitions. [2018-07-25 08:57:52,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2018-07-25 08:57:52,482 INFO L78 Accepts]: Start accepts. Automaton has 205 states. Word has length 407 [2018-07-25 08:57:52,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:52,483 INFO L225 Difference]: With dead ends: 411 [2018-07-25 08:57:52,483 INFO L226 Difference]: Without dead ends: 410 [2018-07-25 08:57:52,484 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=20910, Invalid=20910, Unknown=0, NotChecked=0, Total=41820 [2018-07-25 08:57:52,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2018-07-25 08:57:52,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2018-07-25 08:57:52,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 410 states. [2018-07-25 08:57:52,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 410 transitions. [2018-07-25 08:57:52,488 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 410 transitions. Word has length 407 [2018-07-25 08:57:52,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:52,489 INFO L472 AbstractCegarLoop]: Abstraction has 410 states and 410 transitions. [2018-07-25 08:57:52,489 INFO L473 AbstractCegarLoop]: Interpolant automaton has 205 states. [2018-07-25 08:57:52,489 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 410 transitions. [2018-07-25 08:57:52,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2018-07-25 08:57:52,490 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:52,490 INFO L354 BasicCegarLoop]: trace histogram [204, 203, 1, 1] [2018-07-25 08:57:52,490 INFO L415 AbstractCegarLoop]: === Iteration 204 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:52,490 INFO L82 PathProgramCache]: Analyzing trace with hash -169293386, now seen corresponding path program 203 times [2018-07-25 08:57:52,491 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:52,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:54,282 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 08:57:54,283 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:54,283 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [204] total 204 [2018-07-25 08:57:54,283 INFO L451 AbstractCegarLoop]: Interpolant automaton has 206 states [2018-07-25 08:57:54,286 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 206 interpolants. [2018-07-25 08:57:54,288 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21115, Invalid=21115, Unknown=0, NotChecked=0, Total=42230 [2018-07-25 08:57:54,288 INFO L87 Difference]: Start difference. First operand 410 states and 410 transitions. Second operand 206 states. [2018-07-25 08:57:55,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:55,976 INFO L93 Difference]: Finished difference Result 413 states and 413 transitions. [2018-07-25 08:57:55,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2018-07-25 08:57:55,976 INFO L78 Accepts]: Start accepts. Automaton has 206 states. Word has length 409 [2018-07-25 08:57:55,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:55,976 INFO L225 Difference]: With dead ends: 413 [2018-07-25 08:57:55,976 INFO L226 Difference]: Without dead ends: 412 [2018-07-25 08:57:55,978 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=21115, Invalid=21115, Unknown=0, NotChecked=0, Total=42230 [2018-07-25 08:57:55,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2018-07-25 08:57:55,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2018-07-25 08:57:55,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2018-07-25 08:57:55,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 412 transitions. [2018-07-25 08:57:55,984 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 412 transitions. Word has length 409 [2018-07-25 08:57:55,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:55,984 INFO L472 AbstractCegarLoop]: Abstraction has 412 states and 412 transitions. [2018-07-25 08:57:55,984 INFO L473 AbstractCegarLoop]: Interpolant automaton has 206 states. [2018-07-25 08:57:55,984 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 412 transitions. [2018-07-25 08:57:55,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2018-07-25 08:57:55,985 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:55,985 INFO L354 BasicCegarLoop]: trace histogram [205, 204, 1, 1] [2018-07-25 08:57:55,985 INFO L415 AbstractCegarLoop]: === Iteration 205 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:55,986 INFO L82 PathProgramCache]: Analyzing trace with hash 517814392, now seen corresponding path program 204 times [2018-07-25 08:57:55,986 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:56,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:57,817 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 08:57:57,817 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:57,817 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [205] total 205 [2018-07-25 08:57:57,818 INFO L451 AbstractCegarLoop]: Interpolant automaton has 207 states [2018-07-25 08:57:57,820 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 207 interpolants. [2018-07-25 08:57:57,821 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21321, Invalid=21321, Unknown=0, NotChecked=0, Total=42642 [2018-07-25 08:57:57,821 INFO L87 Difference]: Start difference. First operand 412 states and 412 transitions. Second operand 207 states. [2018-07-25 08:58:00,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:00,086 INFO L93 Difference]: Finished difference Result 415 states and 415 transitions. [2018-07-25 08:58:00,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2018-07-25 08:58:00,086 INFO L78 Accepts]: Start accepts. Automaton has 207 states. Word has length 411 [2018-07-25 08:58:00,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:00,087 INFO L225 Difference]: With dead ends: 415 [2018-07-25 08:58:00,087 INFO L226 Difference]: Without dead ends: 414 [2018-07-25 08:58:00,089 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=21321, Invalid=21321, Unknown=0, NotChecked=0, Total=42642 [2018-07-25 08:58:00,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2018-07-25 08:58:00,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 414. [2018-07-25 08:58:00,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2018-07-25 08:58:00,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 414 transitions. [2018-07-25 08:58:00,094 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 414 transitions. Word has length 411 [2018-07-25 08:58:00,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:00,094 INFO L472 AbstractCegarLoop]: Abstraction has 414 states and 414 transitions. [2018-07-25 08:58:00,094 INFO L473 AbstractCegarLoop]: Interpolant automaton has 207 states. [2018-07-25 08:58:00,094 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 414 transitions. [2018-07-25 08:58:00,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2018-07-25 08:58:00,095 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:00,095 INFO L354 BasicCegarLoop]: trace histogram [206, 205, 1, 1] [2018-07-25 08:58:00,096 INFO L415 AbstractCegarLoop]: === Iteration 206 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:00,096 INFO L82 PathProgramCache]: Analyzing trace with hash -596574534, now seen corresponding path program 205 times [2018-07-25 08:58:00,096 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:00,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:01,956 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 08:58:01,956 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:01,956 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [206] total 206 [2018-07-25 08:58:01,957 INFO L451 AbstractCegarLoop]: Interpolant automaton has 208 states [2018-07-25 08:58:01,958 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 208 interpolants. [2018-07-25 08:58:01,959 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21528, Invalid=21528, Unknown=0, NotChecked=0, Total=43056 [2018-07-25 08:58:01,959 INFO L87 Difference]: Start difference. First operand 414 states and 414 transitions. Second operand 208 states. [2018-07-25 08:58:03,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:03,213 INFO L93 Difference]: Finished difference Result 417 states and 417 transitions. [2018-07-25 08:58:03,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2018-07-25 08:58:03,213 INFO L78 Accepts]: Start accepts. Automaton has 208 states. Word has length 413 [2018-07-25 08:58:03,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:03,214 INFO L225 Difference]: With dead ends: 417 [2018-07-25 08:58:03,214 INFO L226 Difference]: Without dead ends: 416 [2018-07-25 08:58:03,215 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=21528, Invalid=21528, Unknown=0, NotChecked=0, Total=43056 [2018-07-25 08:58:03,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2018-07-25 08:58:03,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 416. [2018-07-25 08:58:03,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2018-07-25 08:58:03,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 416 transitions. [2018-07-25 08:58:03,220 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 416 transitions. Word has length 413 [2018-07-25 08:58:03,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:03,220 INFO L472 AbstractCegarLoop]: Abstraction has 416 states and 416 transitions. [2018-07-25 08:58:03,220 INFO L473 AbstractCegarLoop]: Interpolant automaton has 208 states. [2018-07-25 08:58:03,220 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 416 transitions. [2018-07-25 08:58:03,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2018-07-25 08:58:03,221 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:03,222 INFO L354 BasicCegarLoop]: trace histogram [207, 206, 1, 1] [2018-07-25 08:58:03,222 INFO L415 AbstractCegarLoop]: === Iteration 207 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:03,222 INFO L82 PathProgramCache]: Analyzing trace with hash -2077475716, now seen corresponding path program 206 times [2018-07-25 08:58:03,222 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:03,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:05,277 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 08:58:05,278 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:05,278 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [207] total 207 [2018-07-25 08:58:05,278 INFO L451 AbstractCegarLoop]: Interpolant automaton has 209 states [2018-07-25 08:58:05,281 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 209 interpolants. [2018-07-25 08:58:05,283 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21736, Invalid=21736, Unknown=0, NotChecked=0, Total=43472 [2018-07-25 08:58:05,283 INFO L87 Difference]: Start difference. First operand 416 states and 416 transitions. Second operand 209 states. [2018-07-25 08:58:06,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:06,461 INFO L93 Difference]: Finished difference Result 419 states and 419 transitions. [2018-07-25 08:58:06,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2018-07-25 08:58:06,461 INFO L78 Accepts]: Start accepts. Automaton has 209 states. Word has length 415 [2018-07-25 08:58:06,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:06,462 INFO L225 Difference]: With dead ends: 419 [2018-07-25 08:58:06,462 INFO L226 Difference]: Without dead ends: 418 [2018-07-25 08:58:06,464 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=21736, Invalid=21736, Unknown=0, NotChecked=0, Total=43472 [2018-07-25 08:58:06,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2018-07-25 08:58:06,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2018-07-25 08:58:06,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2018-07-25 08:58:06,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 418 transitions. [2018-07-25 08:58:06,468 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 418 transitions. Word has length 415 [2018-07-25 08:58:06,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:06,469 INFO L472 AbstractCegarLoop]: Abstraction has 418 states and 418 transitions. [2018-07-25 08:58:06,469 INFO L473 AbstractCegarLoop]: Interpolant automaton has 209 states. [2018-07-25 08:58:06,469 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 418 transitions. [2018-07-25 08:58:06,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2018-07-25 08:58:06,470 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:06,470 INFO L354 BasicCegarLoop]: trace histogram [208, 207, 1, 1] [2018-07-25 08:58:06,470 INFO L415 AbstractCegarLoop]: === Iteration 208 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:06,470 INFO L82 PathProgramCache]: Analyzing trace with hash 705630654, now seen corresponding path program 207 times [2018-07-25 08:58:06,470 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:06,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:08,353 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 08:58:08,354 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:08,354 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [208] total 208 [2018-07-25 08:58:08,354 INFO L451 AbstractCegarLoop]: Interpolant automaton has 210 states [2018-07-25 08:58:08,357 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 210 interpolants. [2018-07-25 08:58:08,359 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21945, Invalid=21945, Unknown=0, NotChecked=0, Total=43890 [2018-07-25 08:58:08,359 INFO L87 Difference]: Start difference. First operand 418 states and 418 transitions. Second operand 210 states. [2018-07-25 08:58:10,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:10,756 INFO L93 Difference]: Finished difference Result 421 states and 421 transitions. [2018-07-25 08:58:10,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2018-07-25 08:58:10,757 INFO L78 Accepts]: Start accepts. Automaton has 210 states. Word has length 417 [2018-07-25 08:58:10,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:10,757 INFO L225 Difference]: With dead ends: 421 [2018-07-25 08:58:10,757 INFO L226 Difference]: Without dead ends: 420 [2018-07-25 08:58:10,759 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=21945, Invalid=21945, Unknown=0, NotChecked=0, Total=43890 [2018-07-25 08:58:10,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2018-07-25 08:58:10,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 420. [2018-07-25 08:58:10,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 420 states. [2018-07-25 08:58:10,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 420 transitions. [2018-07-25 08:58:10,763 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 420 transitions. Word has length 417 [2018-07-25 08:58:10,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:10,764 INFO L472 AbstractCegarLoop]: Abstraction has 420 states and 420 transitions. [2018-07-25 08:58:10,764 INFO L473 AbstractCegarLoop]: Interpolant automaton has 210 states. [2018-07-25 08:58:10,764 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 420 transitions. [2018-07-25 08:58:10,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2018-07-25 08:58:10,765 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:10,765 INFO L354 BasicCegarLoop]: trace histogram [209, 208, 1, 1] [2018-07-25 08:58:10,765 INFO L415 AbstractCegarLoop]: === Iteration 209 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:10,765 INFO L82 PathProgramCache]: Analyzing trace with hash -493773184, now seen corresponding path program 208 times [2018-07-25 08:58:10,765 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:11,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:12,849 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 08:58:12,849 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:12,849 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [209] total 209 [2018-07-25 08:58:12,849 INFO L451 AbstractCegarLoop]: Interpolant automaton has 211 states [2018-07-25 08:58:12,851 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 211 interpolants. [2018-07-25 08:58:12,852 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22155, Invalid=22155, Unknown=0, NotChecked=0, Total=44310 [2018-07-25 08:58:12,852 INFO L87 Difference]: Start difference. First operand 420 states and 420 transitions. Second operand 211 states. [2018-07-25 08:58:14,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:14,321 INFO L93 Difference]: Finished difference Result 423 states and 423 transitions. [2018-07-25 08:58:14,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2018-07-25 08:58:14,322 INFO L78 Accepts]: Start accepts. Automaton has 211 states. Word has length 419 [2018-07-25 08:58:14,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:14,323 INFO L225 Difference]: With dead ends: 423 [2018-07-25 08:58:14,323 INFO L226 Difference]: Without dead ends: 422 [2018-07-25 08:58:14,324 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=22155, Invalid=22155, Unknown=0, NotChecked=0, Total=44310 [2018-07-25 08:58:14,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2018-07-25 08:58:14,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 422. [2018-07-25 08:58:14,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 422 states. [2018-07-25 08:58:14,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 422 transitions. [2018-07-25 08:58:14,329 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 422 transitions. Word has length 419 [2018-07-25 08:58:14,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:14,329 INFO L472 AbstractCegarLoop]: Abstraction has 422 states and 422 transitions. [2018-07-25 08:58:14,330 INFO L473 AbstractCegarLoop]: Interpolant automaton has 211 states. [2018-07-25 08:58:14,330 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 422 transitions. [2018-07-25 08:58:14,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2018-07-25 08:58:14,331 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:14,331 INFO L354 BasicCegarLoop]: trace histogram [210, 209, 1, 1] [2018-07-25 08:58:14,331 INFO L415 AbstractCegarLoop]: === Iteration 210 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:14,331 INFO L82 PathProgramCache]: Analyzing trace with hash -2069626174, now seen corresponding path program 209 times [2018-07-25 08:58:14,331 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:14,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:16,422 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 08:58:16,422 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:16,422 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [210] total 210 [2018-07-25 08:58:16,422 INFO L451 AbstractCegarLoop]: Interpolant automaton has 212 states [2018-07-25 08:58:16,426 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 212 interpolants. [2018-07-25 08:58:16,427 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22366, Invalid=22366, Unknown=0, NotChecked=0, Total=44732 [2018-07-25 08:58:16,428 INFO L87 Difference]: Start difference. First operand 422 states and 422 transitions. Second operand 212 states. [2018-07-25 08:58:19,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:19,146 INFO L93 Difference]: Finished difference Result 425 states and 425 transitions. [2018-07-25 08:58:19,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2018-07-25 08:58:19,146 INFO L78 Accepts]: Start accepts. Automaton has 212 states. Word has length 421 [2018-07-25 08:58:19,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:19,147 INFO L225 Difference]: With dead ends: 425 [2018-07-25 08:58:19,147 INFO L226 Difference]: Without dead ends: 424 [2018-07-25 08:58:19,149 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=22366, Invalid=22366, Unknown=0, NotChecked=0, Total=44732 [2018-07-25 08:58:19,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2018-07-25 08:58:19,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 424. [2018-07-25 08:58:19,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424 states. [2018-07-25 08:58:19,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 424 transitions. [2018-07-25 08:58:19,154 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 424 transitions. Word has length 421 [2018-07-25 08:58:19,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:19,155 INFO L472 AbstractCegarLoop]: Abstraction has 424 states and 424 transitions. [2018-07-25 08:58:19,155 INFO L473 AbstractCegarLoop]: Interpolant automaton has 212 states. [2018-07-25 08:58:19,155 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 424 transitions. [2018-07-25 08:58:19,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2018-07-25 08:58:19,156 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:19,156 INFO L354 BasicCegarLoop]: trace histogram [211, 210, 1, 1] [2018-07-25 08:58:19,156 INFO L415 AbstractCegarLoop]: === Iteration 211 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:19,157 INFO L82 PathProgramCache]: Analyzing trace with hash -340894076, now seen corresponding path program 210 times [2018-07-25 08:58:19,157 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:19,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:21,236 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 08:58:21,237 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:21,237 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [211] total 211 [2018-07-25 08:58:21,237 INFO L451 AbstractCegarLoop]: Interpolant automaton has 213 states [2018-07-25 08:58:21,240 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 213 interpolants. [2018-07-25 08:58:21,242 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22578, Invalid=22578, Unknown=0, NotChecked=0, Total=45156 [2018-07-25 08:58:21,242 INFO L87 Difference]: Start difference. First operand 424 states and 424 transitions. Second operand 213 states. [2018-07-25 08:58:22,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:22,677 INFO L93 Difference]: Finished difference Result 427 states and 427 transitions. [2018-07-25 08:58:22,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2018-07-25 08:58:22,677 INFO L78 Accepts]: Start accepts. Automaton has 213 states. Word has length 423 [2018-07-25 08:58:22,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:22,678 INFO L225 Difference]: With dead ends: 427 [2018-07-25 08:58:22,678 INFO L226 Difference]: Without dead ends: 426 [2018-07-25 08:58:22,680 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=22578, Invalid=22578, Unknown=0, NotChecked=0, Total=45156 [2018-07-25 08:58:22,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2018-07-25 08:58:22,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 426. [2018-07-25 08:58:22,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2018-07-25 08:58:22,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 426 transitions. [2018-07-25 08:58:22,685 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 426 transitions. Word has length 423 [2018-07-25 08:58:22,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:22,686 INFO L472 AbstractCegarLoop]: Abstraction has 426 states and 426 transitions. [2018-07-25 08:58:22,686 INFO L473 AbstractCegarLoop]: Interpolant automaton has 213 states. [2018-07-25 08:58:22,686 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 426 transitions. [2018-07-25 08:58:22,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2018-07-25 08:58:22,687 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:22,687 INFO L354 BasicCegarLoop]: trace histogram [212, 211, 1, 1] [2018-07-25 08:58:22,687 INFO L415 AbstractCegarLoop]: === Iteration 212 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:22,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1181691450, now seen corresponding path program 211 times [2018-07-25 08:58:22,688 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:22,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:24,875 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 08:58:24,875 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:24,875 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [212] total 212 [2018-07-25 08:58:24,876 INFO L451 AbstractCegarLoop]: Interpolant automaton has 214 states [2018-07-25 08:58:24,878 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 214 interpolants. [2018-07-25 08:58:24,878 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22791, Invalid=22791, Unknown=0, NotChecked=0, Total=45582 [2018-07-25 08:58:24,879 INFO L87 Difference]: Start difference. First operand 426 states and 426 transitions. Second operand 214 states. [2018-07-25 08:58:27,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:27,295 INFO L93 Difference]: Finished difference Result 429 states and 429 transitions. [2018-07-25 08:58:27,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2018-07-25 08:58:27,295 INFO L78 Accepts]: Start accepts. Automaton has 214 states. Word has length 425 [2018-07-25 08:58:27,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:27,296 INFO L225 Difference]: With dead ends: 429 [2018-07-25 08:58:27,296 INFO L226 Difference]: Without dead ends: 428 [2018-07-25 08:58:27,297 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=22791, Invalid=22791, Unknown=0, NotChecked=0, Total=45582 [2018-07-25 08:58:27,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2018-07-25 08:58:27,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 428. [2018-07-25 08:58:27,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2018-07-25 08:58:27,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 428 transitions. [2018-07-25 08:58:27,302 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 428 transitions. Word has length 425 [2018-07-25 08:58:27,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:27,303 INFO L472 AbstractCegarLoop]: Abstraction has 428 states and 428 transitions. [2018-07-25 08:58:27,303 INFO L473 AbstractCegarLoop]: Interpolant automaton has 214 states. [2018-07-25 08:58:27,303 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 428 transitions. [2018-07-25 08:58:27,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2018-07-25 08:58:27,304 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:27,304 INFO L354 BasicCegarLoop]: trace histogram [213, 212, 1, 1] [2018-07-25 08:58:27,304 INFO L415 AbstractCegarLoop]: === Iteration 213 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:27,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1734116216, now seen corresponding path program 212 times [2018-07-25 08:58:27,305 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:27,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:29,304 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 08:58:29,304 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:29,304 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [213] total 213 [2018-07-25 08:58:29,305 INFO L451 AbstractCegarLoop]: Interpolant automaton has 215 states [2018-07-25 08:58:29,308 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 215 interpolants. [2018-07-25 08:58:29,310 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23005, Invalid=23005, Unknown=0, NotChecked=0, Total=46010 [2018-07-25 08:58:29,310 INFO L87 Difference]: Start difference. First operand 428 states and 428 transitions. Second operand 215 states. [2018-07-25 08:58:31,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:31,403 INFO L93 Difference]: Finished difference Result 431 states and 431 transitions. [2018-07-25 08:58:31,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 215 states. [2018-07-25 08:58:31,404 INFO L78 Accepts]: Start accepts. Automaton has 215 states. Word has length 427 [2018-07-25 08:58:31,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:31,404 INFO L225 Difference]: With dead ends: 431 [2018-07-25 08:58:31,405 INFO L226 Difference]: Without dead ends: 430 [2018-07-25 08:58:31,407 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=23005, Invalid=23005, Unknown=0, NotChecked=0, Total=46010 [2018-07-25 08:58:31,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2018-07-25 08:58:31,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 430. [2018-07-25 08:58:31,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2018-07-25 08:58:31,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 430 transitions. [2018-07-25 08:58:31,413 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 430 transitions. Word has length 427 [2018-07-25 08:58:31,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:31,413 INFO L472 AbstractCegarLoop]: Abstraction has 430 states and 430 transitions. [2018-07-25 08:58:31,413 INFO L473 AbstractCegarLoop]: Interpolant automaton has 215 states. [2018-07-25 08:58:31,413 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 430 transitions. [2018-07-25 08:58:31,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2018-07-25 08:58:31,414 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:31,415 INFO L354 BasicCegarLoop]: trace histogram [214, 213, 1, 1] [2018-07-25 08:58:31,415 INFO L415 AbstractCegarLoop]: === Iteration 214 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:31,415 INFO L82 PathProgramCache]: Analyzing trace with hash -38371638, now seen corresponding path program 213 times [2018-07-25 08:58:31,415 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:31,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:33,452 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 08:58:33,452 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:33,452 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [214] total 214 [2018-07-25 08:58:33,452 INFO L451 AbstractCegarLoop]: Interpolant automaton has 216 states [2018-07-25 08:58:33,455 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2018-07-25 08:58:33,457 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23220, Invalid=23220, Unknown=0, NotChecked=0, Total=46440 [2018-07-25 08:58:33,457 INFO L87 Difference]: Start difference. First operand 430 states and 430 transitions. Second operand 216 states. [2018-07-25 08:58:35,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:35,912 INFO L93 Difference]: Finished difference Result 433 states and 433 transitions. [2018-07-25 08:58:35,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 216 states. [2018-07-25 08:58:35,912 INFO L78 Accepts]: Start accepts. Automaton has 216 states. Word has length 429 [2018-07-25 08:58:35,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:35,913 INFO L225 Difference]: With dead ends: 433 [2018-07-25 08:58:35,913 INFO L226 Difference]: Without dead ends: 432 [2018-07-25 08:58:35,915 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=23220, Invalid=23220, Unknown=0, NotChecked=0, Total=46440 [2018-07-25 08:58:35,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2018-07-25 08:58:35,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 432. [2018-07-25 08:58:35,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 432 states. [2018-07-25 08:58:35,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 432 transitions. [2018-07-25 08:58:35,919 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 432 transitions. Word has length 429 [2018-07-25 08:58:35,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:35,920 INFO L472 AbstractCegarLoop]: Abstraction has 432 states and 432 transitions. [2018-07-25 08:58:35,920 INFO L473 AbstractCegarLoop]: Interpolant automaton has 216 states. [2018-07-25 08:58:35,920 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 432 transitions. [2018-07-25 08:58:35,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2018-07-25 08:58:35,921 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:35,921 INFO L354 BasicCegarLoop]: trace histogram [215, 214, 1, 1] [2018-07-25 08:58:35,921 INFO L415 AbstractCegarLoop]: === Iteration 215 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:35,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1779562636, now seen corresponding path program 214 times [2018-07-25 08:58:35,921 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:36,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:37,843 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 08:58:37,843 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:37,843 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [215] total 215 [2018-07-25 08:58:37,844 INFO L451 AbstractCegarLoop]: Interpolant automaton has 217 states [2018-07-25 08:58:37,846 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 217 interpolants. [2018-07-25 08:58:37,847 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23436, Invalid=23436, Unknown=0, NotChecked=0, Total=46872 [2018-07-25 08:58:37,847 INFO L87 Difference]: Start difference. First operand 432 states and 432 transitions. Second operand 217 states. [2018-07-25 08:58:38,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:38,508 INFO L93 Difference]: Finished difference Result 435 states and 435 transitions. [2018-07-25 08:58:38,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 217 states. [2018-07-25 08:58:38,508 INFO L78 Accepts]: Start accepts. Automaton has 217 states. Word has length 431 [2018-07-25 08:58:38,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:38,509 INFO L225 Difference]: With dead ends: 435 [2018-07-25 08:58:38,509 INFO L226 Difference]: Without dead ends: 434 [2018-07-25 08:58:38,510 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=23436, Invalid=23436, Unknown=0, NotChecked=0, Total=46872 [2018-07-25 08:58:38,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-07-25 08:58:38,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-07-25 08:58:38,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-07-25 08:58:38,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 434 transitions. [2018-07-25 08:58:38,515 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 434 transitions. Word has length 431 [2018-07-25 08:58:38,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:38,515 INFO L472 AbstractCegarLoop]: Abstraction has 434 states and 434 transitions. [2018-07-25 08:58:38,515 INFO L473 AbstractCegarLoop]: Interpolant automaton has 217 states. [2018-07-25 08:58:38,515 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 434 transitions. [2018-07-25 08:58:38,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2018-07-25 08:58:38,516 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:38,516 INFO L354 BasicCegarLoop]: trace histogram [216, 215, 1, 1] [2018-07-25 08:58:38,516 INFO L415 AbstractCegarLoop]: === Iteration 216 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:38,516 INFO L82 PathProgramCache]: Analyzing trace with hash 762710478, now seen corresponding path program 215 times [2018-07-25 08:58:38,517 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:38,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:40,539 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 08:58:40,539 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:40,539 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [216] total 216 [2018-07-25 08:58:40,540 INFO L451 AbstractCegarLoop]: Interpolant automaton has 218 states [2018-07-25 08:58:40,542 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 218 interpolants. [2018-07-25 08:58:40,542 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23653, Invalid=23653, Unknown=0, NotChecked=0, Total=47306 [2018-07-25 08:58:40,543 INFO L87 Difference]: Start difference. First operand 434 states and 434 transitions. Second operand 218 states. [2018-07-25 08:58:43,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:43,370 INFO L93 Difference]: Finished difference Result 437 states and 437 transitions. [2018-07-25 08:58:43,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2018-07-25 08:58:43,371 INFO L78 Accepts]: Start accepts. Automaton has 218 states. Word has length 433 [2018-07-25 08:58:43,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:43,371 INFO L225 Difference]: With dead ends: 437 [2018-07-25 08:58:43,371 INFO L226 Difference]: Without dead ends: 436 [2018-07-25 08:58:43,372 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=23653, Invalid=23653, Unknown=0, NotChecked=0, Total=47306 [2018-07-25 08:58:43,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2018-07-25 08:58:43,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 436. [2018-07-25 08:58:43,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 436 states. [2018-07-25 08:58:43,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 436 transitions. [2018-07-25 08:58:43,378 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 436 transitions. Word has length 433 [2018-07-25 08:58:43,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:43,378 INFO L472 AbstractCegarLoop]: Abstraction has 436 states and 436 transitions. [2018-07-25 08:58:43,378 INFO L473 AbstractCegarLoop]: Interpolant automaton has 218 states. [2018-07-25 08:58:43,378 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 436 transitions. [2018-07-25 08:58:43,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2018-07-25 08:58:43,380 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:43,380 INFO L354 BasicCegarLoop]: trace histogram [217, 216, 1, 1] [2018-07-25 08:58:43,380 INFO L415 AbstractCegarLoop]: === Iteration 217 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:43,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1474637168, now seen corresponding path program 216 times [2018-07-25 08:58:43,380 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:43,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-07-25 08:58:45,165 WARN L541 AbstractCegarLoop]: Verification canceled [2018-07-25 08:58:45,171 WARN L202 ceAbstractionStarter]: Timeout [2018-07-25 08:58:45,171 INFO L202 PluginConnector]: Adding new model MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 08:58:45 BoogieIcfgContainer [2018-07-25 08:58:45,171 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 08:58:45,172 INFO L168 Benchmark]: Toolchain (without parser) took 261800.82 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 1.9 GB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 250.5 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-07-25 08:58:45,173 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.25 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 08:58:45,174 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.41 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 08:58:45,174 INFO L168 Benchmark]: Boogie Preprocessor took 22.91 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 08:58:45,174 INFO L168 Benchmark]: RCFGBuilder took 225.16 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 08:58:45,175 INFO L168 Benchmark]: TraceAbstraction took 261501.38 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 1.9 GB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 239.9 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-07-25 08:58:45,177 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 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 46.41 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 22.91 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 225.16 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 261501.38 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 1.9 GB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 239.9 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 25]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 25). Cancelled while BasicCegarLoop was analyzing trace of length 436 with TraceHistMax 217, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while PredicateComparison was comparing new predicate (quantifier-free) to 214 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. TIMEOUT Result, 261.4s OverallTime, 217 OverallIterations, 217 TraceHistogramMax, 103.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 433 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 58422 SolverSat, 438 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23436 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 23436 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 113.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=436occurred in iteration=216, 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: 1.1s AutomataMinimizationTime, 216 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 15.4s SatisfiabilityAnalysisTime, 123.7s InterpolantComputationTime, 47088 NumberOfCodeBlocks, 47088 NumberOfCodeBlocksAsserted, 216 NumberOfCheckSat, 46872 ConstructedInterpolants, 0 QuantifiedInterpolants, 67651920 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 216 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3359160 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/MonadicInvariant01.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_08-58-45-186.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/MonadicInvariant01.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_08-58-45-186.csv Completed graceful shutdown