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/LargeConstant-ForwardSuccess.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 08:51:44,367 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 08:51:44,369 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 08:51:44,381 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 08:51:44,381 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 08:51:44,383 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 08:51:44,384 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 08:51:44,385 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 08:51:44,387 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 08:51:44,388 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 08:51:44,389 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 08:51:44,389 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 08:51:44,390 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 08:51:44,391 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 08:51:44,392 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 08:51:44,393 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 08:51:44,394 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 08:51:44,396 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 08:51:44,398 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 08:51:44,399 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 08:51:44,400 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 08:51:44,402 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 08:51:44,404 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 08:51:44,404 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 08:51:44,405 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 08:51:44,406 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 08:51:44,407 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 08:51:44,408 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 08:51:44,408 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 08:51:44,412 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 08:51:44,413 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 08:51:44,413 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-25 08:51:44,419 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-07-25 08:51:44,445 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 08:51:44,445 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 08:51:44,447 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 08:51:44,447 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 08:51:44,447 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 08:51:44,447 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-25 08:51:44,447 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 08:51:44,448 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 08:51:44,506 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 08:51:44,519 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 08:51:44,525 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 08:51:44,526 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 08:51:44,527 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 08:51:44,528 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/LargeConstant-ForwardSuccess.bpl [2018-07-25 08:51:44,528 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/LargeConstant-ForwardSuccess.bpl' [2018-07-25 08:51:44,577 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 08:51:44,579 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 08:51:44,580 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 08:51:44,580 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 08:51:44,580 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 08:51:44,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:51:44" (1/1) ... [2018-07-25 08:51:44,611 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:51:44" (1/1) ... [2018-07-25 08:51:44,615 WARN L165 Inliner]: Program contained no entry procedure! [2018-07-25 08:51:44,616 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-07-25 08:51:44,616 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-07-25 08:51:44,618 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 08:51:44,618 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 08:51:44,619 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 08:51:44,619 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 08:51:44,629 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:51:44" (1/1) ... [2018-07-25 08:51:44,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:51:44" (1/1) ... [2018-07-25 08:51:44,630 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:51:44" (1/1) ... [2018-07-25 08:51:44,631 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:51:44" (1/1) ... [2018-07-25 08:51:44,633 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:51:44" (1/1) ... [2018-07-25 08:51:44,636 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:51:44" (1/1) ... [2018-07-25 08:51:44,637 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:51:44" (1/1) ... [2018-07-25 08:51:44,639 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 08:51:44,640 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 08:51:44,640 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 08:51:44,640 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 08:51:44,642 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:51:44" (1/1) ... [2018-07-25 08:51:44,720 INFO L130 BoogieDeclarations]: Found specification of procedure proc [2018-07-25 08:51:44,721 INFO L138 BoogieDeclarations]: Found implementation of procedure proc [2018-07-25 08:51:44,854 INFO L270 CfgBuilder]: Using library mode [2018-07-25 08:51:44,855 INFO L202 PluginConnector]: Adding new model LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:51:44 BoogieIcfgContainer [2018-07-25 08:51:44,856 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 08:51:44,857 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 08:51:44,857 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 08:51:44,860 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 08:51:44,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:51:44" (1/2) ... [2018-07-25 08:51:44,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@418edfa7 and model type LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 08:51:44, skipping insertion in model container [2018-07-25 08:51:44,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:51:44" (2/2) ... [2018-07-25 08:51:44,865 INFO L112 eAbstractionObserver]: Analyzing ICFG LargeConstant-ForwardSuccess.bpl [2018-07-25 08:51:44,876 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-25 08:51:44,889 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 08:51:44,943 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 08:51:44,944 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 08:51:44,944 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 08:51:44,944 INFO L376 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-25 08:51:44,945 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 08:51:44,945 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 08:51:44,945 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 08:51:44,945 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 08:51:44,946 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 08:51:44,964 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2018-07-25 08:51:44,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-07-25 08:51:44,977 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:44,979 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-07-25 08:51:44,981 INFO L415 AbstractCegarLoop]: === Iteration 1 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:44,991 INFO L82 PathProgramCache]: Analyzing trace with hash 29920, now seen corresponding path program 1 times [2018-07-25 08:51:44,999 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:45,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:45,078 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 08:51:45,081 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:51:45,084 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-07-25 08:51:45,089 INFO L451 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-25 08:51:45,105 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-25 08:51:45,106 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-25 08:51:45,109 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 3 states. [2018-07-25 08:51:45,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:45,138 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-07-25 08:51:45,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-25 08:51:45,140 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-07-25 08:51:45,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:45,154 INFO L225 Difference]: With dead ends: 9 [2018-07-25 08:51:45,155 INFO L226 Difference]: Without dead ends: 6 [2018-07-25 08:51:45,160 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 08:51:45,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-07-25 08:51:45,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-07-25 08:51:45,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-07-25 08:51:45,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-07-25 08:51:45,210 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 3 [2018-07-25 08:51:45,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:45,211 INFO L472 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-07-25 08:51:45,211 INFO L473 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-25 08:51:45,211 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-07-25 08:51:45,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-07-25 08:51:45,212 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:45,212 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-07-25 08:51:45,212 INFO L415 AbstractCegarLoop]: === Iteration 2 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:45,213 INFO L82 PathProgramCache]: Analyzing trace with hash 28754210, now seen corresponding path program 1 times [2018-07-25 08:51:45,213 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:45,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:45,247 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 08:51:45,248 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:45,248 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2018-07-25 08:51:45,250 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 08:51:45,251 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 08:51:45,251 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:51:45,252 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 4 states. [2018-07-25 08:51:45,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:45,292 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-07-25 08:51:45,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 08:51:45,293 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2018-07-25 08:51:45,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:45,293 INFO L225 Difference]: With dead ends: 9 [2018-07-25 08:51:45,294 INFO L226 Difference]: Without dead ends: 8 [2018-07-25 08:51:45,295 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 08:51:45,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-07-25 08:51:45,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-07-25 08:51:45,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-07-25 08:51:45,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-07-25 08:51:45,301 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 5 [2018-07-25 08:51:45,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:45,302 INFO L472 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-07-25 08:51:45,303 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 08:51:45,303 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-07-25 08:51:45,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-25 08:51:45,303 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:45,304 INFO L354 BasicCegarLoop]: trace histogram [3, 2, 1, 1] [2018-07-25 08:51:45,304 INFO L415 AbstractCegarLoop]: === Iteration 3 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:45,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1862993124, now seen corresponding path program 2 times [2018-07-25 08:51:45,306 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:45,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:45,370 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 08:51:45,371 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:45,371 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-25 08:51:45,372 INFO L451 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-25 08:51:45,372 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-25 08:51:45,372 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:51:45,373 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 5 states. [2018-07-25 08:51:45,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:45,389 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-07-25 08:51:45,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-25 08:51:45,389 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2018-07-25 08:51:45,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:45,390 INFO L225 Difference]: With dead ends: 11 [2018-07-25 08:51:45,390 INFO L226 Difference]: Without dead ends: 10 [2018-07-25 08:51:45,391 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 08:51:45,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-07-25 08:51:45,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-07-25 08:51:45,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-07-25 08:51:45,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-07-25 08:51:45,394 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2018-07-25 08:51:45,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:45,395 INFO L472 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-07-25 08:51:45,395 INFO L473 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-25 08:51:45,395 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-07-25 08:51:45,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-07-25 08:51:45,396 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:45,396 INFO L354 BasicCegarLoop]: trace histogram [4, 3, 1, 1] [2018-07-25 08:51:45,396 INFO L415 AbstractCegarLoop]: === Iteration 4 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:45,397 INFO L82 PathProgramCache]: Analyzing trace with hash -664969178, now seen corresponding path program 3 times [2018-07-25 08:51:45,397 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:45,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:45,437 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 08:51:45,438 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:45,438 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-25 08:51:45,439 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 08:51:45,439 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 08:51:45,439 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:51:45,440 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 6 states. [2018-07-25 08:51:45,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:45,465 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-07-25 08:51:45,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 08:51:45,466 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2018-07-25 08:51:45,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:45,470 INFO L225 Difference]: With dead ends: 13 [2018-07-25 08:51:45,470 INFO L226 Difference]: Without dead ends: 12 [2018-07-25 08:51:45,471 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 08:51:45,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-07-25 08:51:45,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-07-25 08:51:45,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-07-25 08:51:45,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-07-25 08:51:45,478 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2018-07-25 08:51:45,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:45,479 INFO L472 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-07-25 08:51:45,479 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 08:51:45,479 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-07-25 08:51:45,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-07-25 08:51:45,480 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:45,480 INFO L354 BasicCegarLoop]: trace histogram [5, 4, 1, 1] [2018-07-25 08:51:45,480 INFO L415 AbstractCegarLoop]: === Iteration 5 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:45,481 INFO L82 PathProgramCache]: Analyzing trace with hash 914748136, now seen corresponding path program 4 times [2018-07-25 08:51:45,481 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:45,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:45,547 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 08:51:45,548 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:45,548 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 08:51:45,548 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 08:51:45,549 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 08:51:45,549 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:51:45,549 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 7 states. [2018-07-25 08:51:45,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:45,568 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-07-25 08:51:45,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-25 08:51:45,569 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2018-07-25 08:51:45,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:45,570 INFO L225 Difference]: With dead ends: 15 [2018-07-25 08:51:45,570 INFO L226 Difference]: Without dead ends: 14 [2018-07-25 08:51:45,572 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 08:51:45,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-07-25 08:51:45,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-07-25 08:51:45,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-07-25 08:51:45,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-07-25 08:51:45,578 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-07-25 08:51:45,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:45,580 INFO L472 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-07-25 08:51:45,580 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 08:51:45,581 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-07-25 08:51:45,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-07-25 08:51:45,582 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:45,583 INFO L354 BasicCegarLoop]: trace histogram [6, 5, 1, 1] [2018-07-25 08:51:45,583 INFO L415 AbstractCegarLoop]: === Iteration 6 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:45,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1395335894, now seen corresponding path program 5 times [2018-07-25 08:51:45,584 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:45,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:45,631 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 08:51:45,631 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:45,631 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 08:51:45,632 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:51:45,632 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:51:45,633 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:51:45,633 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 8 states. [2018-07-25 08:51:45,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:45,659 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-07-25 08:51:45,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-25 08:51:45,659 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2018-07-25 08:51:45,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:45,660 INFO L225 Difference]: With dead ends: 17 [2018-07-25 08:51:45,660 INFO L226 Difference]: Without dead ends: 16 [2018-07-25 08:51:45,661 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 08:51:45,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-07-25 08:51:45,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-07-25 08:51:45,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-07-25 08:51:45,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-07-25 08:51:45,666 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2018-07-25 08:51:45,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:45,666 INFO L472 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-07-25 08:51:45,666 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:51:45,667 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-07-25 08:51:45,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-07-25 08:51:45,667 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:45,667 INFO L354 BasicCegarLoop]: trace histogram [7, 6, 1, 1] [2018-07-25 08:51:45,668 INFO L415 AbstractCegarLoop]: === Iteration 7 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:45,668 INFO L82 PathProgramCache]: Analyzing trace with hash -887996692, now seen corresponding path program 6 times [2018-07-25 08:51:45,668 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:45,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:45,715 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 08:51:45,716 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:45,716 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:51:45,716 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:51:45,720 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:51:45,720 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:51:45,720 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 9 states. [2018-07-25 08:51:45,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:45,761 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-07-25 08:51:45,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-25 08:51:45,762 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-07-25 08:51:45,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:45,765 INFO L225 Difference]: With dead ends: 19 [2018-07-25 08:51:45,765 INFO L226 Difference]: Without dead ends: 18 [2018-07-25 08:51:45,766 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 08:51:45,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-07-25 08:51:45,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-07-25 08:51:45,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-07-25 08:51:45,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-07-25 08:51:45,774 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2018-07-25 08:51:45,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:45,775 INFO L472 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-07-25 08:51:45,775 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:51:45,775 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-07-25 08:51:45,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-07-25 08:51:45,776 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:45,776 INFO L354 BasicCegarLoop]: trace histogram [8, 7, 1, 1] [2018-07-25 08:51:45,777 INFO L415 AbstractCegarLoop]: === Iteration 8 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:45,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1333671982, now seen corresponding path program 7 times [2018-07-25 08:51:45,780 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:45,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:45,855 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 08:51:45,855 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:45,856 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:51:45,856 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 08:51:45,856 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 08:51:45,857 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:51:45,857 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 10 states. [2018-07-25 08:51:45,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:45,899 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-07-25 08:51:45,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-25 08:51:45,903 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-07-25 08:51:45,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:45,904 INFO L225 Difference]: With dead ends: 21 [2018-07-25 08:51:45,904 INFO L226 Difference]: Without dead ends: 20 [2018-07-25 08:51:45,905 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 08:51:45,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-07-25 08:51:45,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-07-25 08:51:45,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-07-25 08:51:45,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-07-25 08:51:45,913 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 17 [2018-07-25 08:51:45,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:45,914 INFO L472 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-07-25 08:51:45,914 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 08:51:45,916 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-07-25 08:51:45,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-07-25 08:51:45,917 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:45,917 INFO L354 BasicCegarLoop]: trace histogram [9, 8, 1, 1] [2018-07-25 08:51:45,917 INFO L415 AbstractCegarLoop]: === Iteration 9 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:45,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1758521584, now seen corresponding path program 8 times [2018-07-25 08:51:45,922 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:45,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:45,991 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 08:51:45,991 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:45,991 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:51:45,992 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:51:45,992 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:51:45,992 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:51:45,993 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 11 states. [2018-07-25 08:51:46,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:46,012 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-07-25 08:51:46,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 08:51:46,013 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-07-25 08:51:46,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:46,014 INFO L225 Difference]: With dead ends: 23 [2018-07-25 08:51:46,014 INFO L226 Difference]: Without dead ends: 22 [2018-07-25 08:51:46,015 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 08:51:46,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-07-25 08:51:46,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-07-25 08:51:46,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-07-25 08:51:46,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-07-25 08:51:46,019 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 19 [2018-07-25 08:51:46,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:46,020 INFO L472 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-07-25 08:51:46,020 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 08:51:46,020 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-07-25 08:51:46,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-07-25 08:51:46,021 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:46,021 INFO L354 BasicCegarLoop]: trace histogram [10, 9, 1, 1] [2018-07-25 08:51:46,022 INFO L415 AbstractCegarLoop]: === Iteration 10 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:46,022 INFO L82 PathProgramCache]: Analyzing trace with hash 2017095986, now seen corresponding path program 9 times [2018-07-25 08:51:46,022 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:46,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:46,075 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 08:51:46,075 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:46,075 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 08:51:46,076 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 08:51:46,076 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 08:51:46,076 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:51:46,077 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 12 states. [2018-07-25 08:51:46,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:46,115 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-07-25 08:51:46,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-25 08:51:46,116 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 21 [2018-07-25 08:51:46,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:46,117 INFO L225 Difference]: With dead ends: 25 [2018-07-25 08:51:46,117 INFO L226 Difference]: Without dead ends: 24 [2018-07-25 08:51:46,118 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 08:51:46,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-07-25 08:51:46,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-07-25 08:51:46,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-07-25 08:51:46,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-07-25 08:51:46,129 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 21 [2018-07-25 08:51:46,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:46,130 INFO L472 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-07-25 08:51:46,130 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 08:51:46,130 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-07-25 08:51:46,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-07-25 08:51:46,131 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:46,131 INFO L354 BasicCegarLoop]: trace histogram [11, 10, 1, 1] [2018-07-25 08:51:46,132 INFO L415 AbstractCegarLoop]: === Iteration 11 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:46,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1398993140, now seen corresponding path program 10 times [2018-07-25 08:51:46,132 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:46,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:46,227 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 08:51:46,227 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:46,227 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 08:51:46,228 INFO L451 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-25 08:51:46,228 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-25 08:51:46,228 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-07-25 08:51:46,229 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 13 states. [2018-07-25 08:51:46,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:46,257 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-07-25 08:51:46,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 08:51:46,257 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 23 [2018-07-25 08:51:46,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:46,262 INFO L225 Difference]: With dead ends: 27 [2018-07-25 08:51:46,262 INFO L226 Difference]: Without dead ends: 26 [2018-07-25 08:51:46,263 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 08:51:46,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-07-25 08:51:46,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-07-25 08:51:46,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-07-25 08:51:46,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-07-25 08:51:46,269 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 23 [2018-07-25 08:51:46,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:46,270 INFO L472 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-07-25 08:51:46,270 INFO L473 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-25 08:51:46,270 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-07-25 08:51:46,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 08:51:46,271 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:46,271 INFO L354 BasicCegarLoop]: trace histogram [12, 11, 1, 1] [2018-07-25 08:51:46,271 INFO L415 AbstractCegarLoop]: === Iteration 12 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:46,272 INFO L82 PathProgramCache]: Analyzing trace with hash 107644982, now seen corresponding path program 11 times [2018-07-25 08:51:46,272 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:46,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:46,337 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 08:51:46,337 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:46,337 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-07-25 08:51:46,338 INFO L451 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-25 08:51:46,338 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-25 08:51:46,338 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:51:46,339 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 14 states. [2018-07-25 08:51:46,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:46,356 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-07-25 08:51:46,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-25 08:51:46,356 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 25 [2018-07-25 08:51:46,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:46,357 INFO L225 Difference]: With dead ends: 29 [2018-07-25 08:51:46,358 INFO L226 Difference]: Without dead ends: 28 [2018-07-25 08:51:46,358 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 08:51:46,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-07-25 08:51:46,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-07-25 08:51:46,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-07-25 08:51:46,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-07-25 08:51:46,364 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 25 [2018-07-25 08:51:46,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:46,364 INFO L472 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-07-25 08:51:46,364 INFO L473 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-25 08:51:46,364 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-07-25 08:51:46,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-07-25 08:51:46,365 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:46,365 INFO L354 BasicCegarLoop]: trace histogram [13, 12, 1, 1] [2018-07-25 08:51:46,366 INFO L415 AbstractCegarLoop]: === Iteration 13 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:46,366 INFO L82 PathProgramCache]: Analyzing trace with hash 367613688, now seen corresponding path program 12 times [2018-07-25 08:51:46,366 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:46,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:46,415 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 08:51:46,415 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:46,415 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-07-25 08:51:46,416 INFO L451 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-25 08:51:46,416 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-25 08:51:46,417 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-07-25 08:51:46,417 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 15 states. [2018-07-25 08:51:46,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:46,436 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-07-25 08:51:46,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-25 08:51:46,437 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 27 [2018-07-25 08:51:46,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:46,438 INFO L225 Difference]: With dead ends: 31 [2018-07-25 08:51:46,438 INFO L226 Difference]: Without dead ends: 30 [2018-07-25 08:51:46,438 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 08:51:46,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-07-25 08:51:46,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-07-25 08:51:46,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-07-25 08:51:46,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-07-25 08:51:46,444 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 27 [2018-07-25 08:51:46,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:46,444 INFO L472 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-07-25 08:51:46,445 INFO L473 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-25 08:51:46,445 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-07-25 08:51:46,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-25 08:51:46,446 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:46,446 INFO L354 BasicCegarLoop]: trace histogram [14, 13, 1, 1] [2018-07-25 08:51:46,447 INFO L415 AbstractCegarLoop]: === Iteration 14 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:46,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1089436986, now seen corresponding path program 13 times [2018-07-25 08:51:46,447 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:46,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:46,542 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 08:51:46,543 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:46,543 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-07-25 08:51:46,546 INFO L451 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-25 08:51:46,546 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-25 08:51:46,546 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-07-25 08:51:46,547 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 16 states. [2018-07-25 08:51:46,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:46,587 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-07-25 08:51:46,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 08:51:46,587 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2018-07-25 08:51:46,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:46,588 INFO L225 Difference]: With dead ends: 33 [2018-07-25 08:51:46,588 INFO L226 Difference]: Without dead ends: 32 [2018-07-25 08:51:46,589 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 08:51:46,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-07-25 08:51:46,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-07-25 08:51:46,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-07-25 08:51:46,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-07-25 08:51:46,602 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 29 [2018-07-25 08:51:46,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:46,603 INFO L472 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-07-25 08:51:46,603 INFO L473 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-25 08:51:46,603 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-07-25 08:51:46,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-07-25 08:51:46,604 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:46,604 INFO L354 BasicCegarLoop]: trace histogram [15, 14, 1, 1] [2018-07-25 08:51:46,606 INFO L415 AbstractCegarLoop]: === Iteration 15 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:46,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1023075588, now seen corresponding path program 14 times [2018-07-25 08:51:46,606 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:46,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:46,691 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 08:51:46,692 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:46,692 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-25 08:51:46,693 INFO L451 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-25 08:51:46,693 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-25 08:51:46,693 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-07-25 08:51:46,694 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 17 states. [2018-07-25 08:51:46,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:46,721 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-07-25 08:51:46,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-25 08:51:46,724 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 31 [2018-07-25 08:51:46,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:46,725 INFO L225 Difference]: With dead ends: 35 [2018-07-25 08:51:46,726 INFO L226 Difference]: Without dead ends: 34 [2018-07-25 08:51:46,728 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 08:51:46,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-07-25 08:51:46,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-07-25 08:51:46,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-07-25 08:51:46,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-07-25 08:51:46,736 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 31 [2018-07-25 08:51:46,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:46,736 INFO L472 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2018-07-25 08:51:46,737 INFO L473 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-25 08:51:46,737 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-07-25 08:51:46,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-07-25 08:51:46,738 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:46,738 INFO L354 BasicCegarLoop]: trace histogram [16, 15, 1, 1] [2018-07-25 08:51:46,738 INFO L415 AbstractCegarLoop]: === Iteration 16 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:46,738 INFO L82 PathProgramCache]: Analyzing trace with hash 371871806, now seen corresponding path program 15 times [2018-07-25 08:51:46,739 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:46,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:46,826 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 08:51:46,826 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:46,827 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-07-25 08:51:46,827 INFO L451 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-25 08:51:46,827 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-25 08:51:46,828 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-07-25 08:51:46,828 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 18 states. [2018-07-25 08:51:46,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:46,856 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-07-25 08:51:46,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 08:51:46,856 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 33 [2018-07-25 08:51:46,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:46,857 INFO L225 Difference]: With dead ends: 37 [2018-07-25 08:51:46,858 INFO L226 Difference]: Without dead ends: 36 [2018-07-25 08:51:46,858 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 08:51:46,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-07-25 08:51:46,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-07-25 08:51:46,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-07-25 08:51:46,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-07-25 08:51:46,863 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 33 [2018-07-25 08:51:46,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:46,864 INFO L472 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-07-25 08:51:46,864 INFO L473 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-25 08:51:46,864 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-07-25 08:51:46,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-07-25 08:51:46,865 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:46,865 INFO L354 BasicCegarLoop]: trace histogram [17, 16, 1, 1] [2018-07-25 08:51:46,865 INFO L415 AbstractCegarLoop]: === Iteration 17 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:46,865 INFO L82 PathProgramCache]: Analyzing trace with hash 886521088, now seen corresponding path program 16 times [2018-07-25 08:51:46,866 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:46,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:46,929 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 08:51:46,929 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:46,930 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-07-25 08:51:46,930 INFO L451 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-25 08:51:46,930 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-25 08:51:46,931 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-07-25 08:51:46,931 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 19 states. [2018-07-25 08:51:46,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:46,948 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-07-25 08:51:46,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-25 08:51:46,948 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 35 [2018-07-25 08:51:46,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:46,949 INFO L225 Difference]: With dead ends: 39 [2018-07-25 08:51:46,949 INFO L226 Difference]: Without dead ends: 38 [2018-07-25 08:51:46,950 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 08:51:46,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-07-25 08:51:46,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-07-25 08:51:46,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-07-25 08:51:46,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2018-07-25 08:51:46,955 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 35 [2018-07-25 08:51:46,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:46,956 INFO L472 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2018-07-25 08:51:46,956 INFO L473 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-25 08:51:46,956 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2018-07-25 08:51:46,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-07-25 08:51:46,957 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:46,957 INFO L354 BasicCegarLoop]: trace histogram [18, 17, 1, 1] [2018-07-25 08:51:46,957 INFO L415 AbstractCegarLoop]: === Iteration 18 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:46,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1543242050, now seen corresponding path program 17 times [2018-07-25 08:51:46,958 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:47,022 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 08:51:47,023 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:47,023 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-07-25 08:51:47,024 INFO L451 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-25 08:51:47,024 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-25 08:51:47,024 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:51:47,025 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 20 states. [2018-07-25 08:51:47,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:47,054 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-07-25 08:51:47,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 08:51:47,054 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 37 [2018-07-25 08:51:47,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:47,055 INFO L225 Difference]: With dead ends: 41 [2018-07-25 08:51:47,055 INFO L226 Difference]: Without dead ends: 40 [2018-07-25 08:51:47,056 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 08:51:47,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-07-25 08:51:47,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-07-25 08:51:47,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-07-25 08:51:47,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2018-07-25 08:51:47,066 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 37 [2018-07-25 08:51:47,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:47,067 INFO L472 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2018-07-25 08:51:47,067 INFO L473 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-25 08:51:47,067 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2018-07-25 08:51:47,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-07-25 08:51:47,069 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:47,069 INFO L354 BasicCegarLoop]: trace histogram [19, 18, 1, 1] [2018-07-25 08:51:47,070 INFO L415 AbstractCegarLoop]: === Iteration 19 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:47,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1291894020, now seen corresponding path program 18 times [2018-07-25 08:51:47,070 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:47,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:47,159 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 08:51:47,159 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:47,160 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-25 08:51:47,160 INFO L451 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-07-25 08:51:47,162 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-07-25 08:51:47,163 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-07-25 08:51:47,163 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 21 states. [2018-07-25 08:51:47,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:47,181 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-07-25 08:51:47,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-25 08:51:47,181 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 39 [2018-07-25 08:51:47,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:47,182 INFO L225 Difference]: With dead ends: 43 [2018-07-25 08:51:47,183 INFO L226 Difference]: Without dead ends: 42 [2018-07-25 08:51:47,184 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 08:51:47,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-07-25 08:51:47,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-07-25 08:51:47,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-07-25 08:51:47,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2018-07-25 08:51:47,191 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 39 [2018-07-25 08:51:47,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:47,192 INFO L472 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2018-07-25 08:51:47,192 INFO L473 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-07-25 08:51:47,192 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2018-07-25 08:51:47,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-07-25 08:51:47,194 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:47,194 INFO L354 BasicCegarLoop]: trace histogram [20, 19, 1, 1] [2018-07-25 08:51:47,194 INFO L415 AbstractCegarLoop]: === Iteration 20 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:47,194 INFO L82 PathProgramCache]: Analyzing trace with hash 264605766, now seen corresponding path program 19 times [2018-07-25 08:51:47,195 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:47,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:47,282 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 08:51:47,282 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:47,283 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-07-25 08:51:47,283 INFO L451 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-25 08:51:47,283 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-25 08:51:47,284 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:51:47,284 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 22 states. [2018-07-25 08:51:47,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:47,303 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-07-25 08:51:47,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 08:51:47,304 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 41 [2018-07-25 08:51:47,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:47,304 INFO L225 Difference]: With dead ends: 45 [2018-07-25 08:51:47,305 INFO L226 Difference]: Without dead ends: 44 [2018-07-25 08:51:47,305 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 08:51:47,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-07-25 08:51:47,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-07-25 08:51:47,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-07-25 08:51:47,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2018-07-25 08:51:47,310 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 41 [2018-07-25 08:51:47,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:47,311 INFO L472 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2018-07-25 08:51:47,311 INFO L473 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-25 08:51:47,311 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2018-07-25 08:51:47,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-07-25 08:51:47,312 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:47,312 INFO L354 BasicCegarLoop]: trace histogram [21, 20, 1, 1] [2018-07-25 08:51:47,312 INFO L415 AbstractCegarLoop]: === Iteration 21 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:47,313 INFO L82 PathProgramCache]: Analyzing trace with hash 883071752, now seen corresponding path program 20 times [2018-07-25 08:51:47,313 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:47,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:47,394 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 08:51:47,395 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:47,395 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-07-25 08:51:47,395 INFO L451 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-07-25 08:51:47,395 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-07-25 08:51:47,396 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-07-25 08:51:47,396 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 23 states. [2018-07-25 08:51:47,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:47,415 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-07-25 08:51:47,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-25 08:51:47,416 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 43 [2018-07-25 08:51:47,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:47,416 INFO L225 Difference]: With dead ends: 47 [2018-07-25 08:51:47,416 INFO L226 Difference]: Without dead ends: 46 [2018-07-25 08:51:47,417 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 08:51:47,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-07-25 08:51:47,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-07-25 08:51:47,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-07-25 08:51:47,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2018-07-25 08:51:47,422 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 43 [2018-07-25 08:51:47,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:47,422 INFO L472 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2018-07-25 08:51:47,422 INFO L473 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-07-25 08:51:47,423 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2018-07-25 08:51:47,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-07-25 08:51:47,423 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:47,423 INFO L354 BasicCegarLoop]: trace histogram [22, 21, 1, 1] [2018-07-25 08:51:47,424 INFO L415 AbstractCegarLoop]: === Iteration 22 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:47,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1771569846, now seen corresponding path program 21 times [2018-07-25 08:51:47,424 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:47,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:47,510 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 08:51:47,511 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:47,511 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-07-25 08:51:47,512 INFO L451 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-25 08:51:47,512 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-25 08:51:47,512 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:51:47,513 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 24 states. [2018-07-25 08:51:47,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:47,531 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-07-25 08:51:47,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-25 08:51:47,531 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 45 [2018-07-25 08:51:47,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:47,532 INFO L225 Difference]: With dead ends: 49 [2018-07-25 08:51:47,532 INFO L226 Difference]: Without dead ends: 48 [2018-07-25 08:51:47,533 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 08:51:47,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-07-25 08:51:47,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-07-25 08:51:47,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-07-25 08:51:47,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2018-07-25 08:51:47,538 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 45 [2018-07-25 08:51:47,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:47,538 INFO L472 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2018-07-25 08:51:47,538 INFO L473 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-25 08:51:47,539 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2018-07-25 08:51:47,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-07-25 08:51:47,539 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:47,540 INFO L354 BasicCegarLoop]: trace histogram [23, 22, 1, 1] [2018-07-25 08:51:47,540 INFO L415 AbstractCegarLoop]: === Iteration 23 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:47,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1671571700, now seen corresponding path program 22 times [2018-07-25 08:51:47,540 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:47,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:47,633 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 08:51:47,634 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:47,634 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-25 08:51:47,634 INFO L451 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-07-25 08:51:47,635 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-07-25 08:51:47,635 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:51:47,636 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 25 states. [2018-07-25 08:51:47,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:47,657 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-07-25 08:51:47,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-07-25 08:51:47,658 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 47 [2018-07-25 08:51:47,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:47,658 INFO L225 Difference]: With dead ends: 51 [2018-07-25 08:51:47,659 INFO L226 Difference]: Without dead ends: 50 [2018-07-25 08:51:47,659 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 08:51:47,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-07-25 08:51:47,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-07-25 08:51:47,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-07-25 08:51:47,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2018-07-25 08:51:47,669 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 47 [2018-07-25 08:51:47,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:47,670 INFO L472 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2018-07-25 08:51:47,670 INFO L473 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-07-25 08:51:47,670 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2018-07-25 08:51:47,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-07-25 08:51:47,675 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:47,676 INFO L354 BasicCegarLoop]: trace histogram [24, 23, 1, 1] [2018-07-25 08:51:47,676 INFO L415 AbstractCegarLoop]: === Iteration 24 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:47,676 INFO L82 PathProgramCache]: Analyzing trace with hash -62633906, now seen corresponding path program 23 times [2018-07-25 08:51:47,676 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:47,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:47,785 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 08:51:47,785 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:47,786 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-07-25 08:51:47,786 INFO L451 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-25 08:51:47,786 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-25 08:51:47,787 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:51:47,787 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 26 states. [2018-07-25 08:51:47,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:47,817 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-07-25 08:51:47,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-25 08:51:47,817 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 49 [2018-07-25 08:51:47,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:47,818 INFO L225 Difference]: With dead ends: 53 [2018-07-25 08:51:47,818 INFO L226 Difference]: Without dead ends: 52 [2018-07-25 08:51:47,819 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:51:47,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-07-25 08:51:47,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-07-25 08:51:47,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-07-25 08:51:47,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2018-07-25 08:51:47,827 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 49 [2018-07-25 08:51:47,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:47,828 INFO L472 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2018-07-25 08:51:47,828 INFO L473 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-07-25 08:51:47,828 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2018-07-25 08:51:47,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-07-25 08:51:47,829 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:47,829 INFO L354 BasicCegarLoop]: trace histogram [25, 24, 1, 1] [2018-07-25 08:51:47,834 INFO L415 AbstractCegarLoop]: === Iteration 25 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:47,834 INFO L82 PathProgramCache]: Analyzing trace with hash -61640432, now seen corresponding path program 24 times [2018-07-25 08:51:47,835 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:47,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:47,958 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 08:51:47,959 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:47,959 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-07-25 08:51:47,959 INFO L451 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-07-25 08:51:47,960 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-07-25 08:51:47,960 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-07-25 08:51:47,960 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 27 states. [2018-07-25 08:51:47,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:47,981 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-07-25 08:51:47,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-07-25 08:51:47,981 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 51 [2018-07-25 08:51:47,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:47,982 INFO L225 Difference]: With dead ends: 55 [2018-07-25 08:51:47,982 INFO L226 Difference]: Without dead ends: 54 [2018-07-25 08:51:47,983 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 08:51:47,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-07-25 08:51:47,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-07-25 08:51:47,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-07-25 08:51:47,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2018-07-25 08:51:47,988 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 51 [2018-07-25 08:51:47,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:47,989 INFO L472 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2018-07-25 08:51:47,989 INFO L473 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-07-25 08:51:47,989 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2018-07-25 08:51:47,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-07-25 08:51:47,990 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:47,990 INFO L354 BasicCegarLoop]: trace histogram [26, 25, 1, 1] [2018-07-25 08:51:47,990 INFO L415 AbstractCegarLoop]: === Iteration 26 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:47,990 INFO L82 PathProgramCache]: Analyzing trace with hash 893088082, now seen corresponding path program 25 times [2018-07-25 08:51:47,990 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:48,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:48,112 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 08:51:48,112 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:48,113 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-07-25 08:51:48,113 INFO L451 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-25 08:51:48,113 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-25 08:51:48,114 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:51:48,114 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 28 states. [2018-07-25 08:51:48,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:48,136 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-07-25 08:51:48,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-25 08:51:48,136 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 53 [2018-07-25 08:51:48,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:48,137 INFO L225 Difference]: With dead ends: 57 [2018-07-25 08:51:48,137 INFO L226 Difference]: Without dead ends: 56 [2018-07-25 08:51:48,138 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:51:48,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-07-25 08:51:48,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-07-25 08:51:48,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-07-25 08:51:48,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2018-07-25 08:51:48,149 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 53 [2018-07-25 08:51:48,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:48,149 INFO L472 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2018-07-25 08:51:48,149 INFO L473 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-25 08:51:48,150 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2018-07-25 08:51:48,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-07-25 08:51:48,150 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:48,150 INFO L354 BasicCegarLoop]: trace histogram [27, 26, 1, 1] [2018-07-25 08:51:48,151 INFO L415 AbstractCegarLoop]: === Iteration 27 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:48,151 INFO L82 PathProgramCache]: Analyzing trace with hash -735811308, now seen corresponding path program 26 times [2018-07-25 08:51:48,151 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:48,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:48,269 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 08:51:48,269 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:48,270 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-25 08:51:48,270 INFO L451 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-07-25 08:51:48,271 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-07-25 08:51:48,271 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:51:48,272 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 29 states. [2018-07-25 08:51:48,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:48,299 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-07-25 08:51:48,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-25 08:51:48,299 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 55 [2018-07-25 08:51:48,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:48,300 INFO L225 Difference]: With dead ends: 59 [2018-07-25 08:51:48,300 INFO L226 Difference]: Without dead ends: 58 [2018-07-25 08:51:48,301 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:51:48,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-07-25 08:51:48,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-07-25 08:51:48,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-07-25 08:51:48,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2018-07-25 08:51:48,308 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 55 [2018-07-25 08:51:48,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:48,309 INFO L472 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2018-07-25 08:51:48,309 INFO L473 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-07-25 08:51:48,309 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2018-07-25 08:51:48,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-07-25 08:51:48,310 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:48,310 INFO L354 BasicCegarLoop]: trace histogram [28, 27, 1, 1] [2018-07-25 08:51:48,310 INFO L415 AbstractCegarLoop]: === Iteration 28 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:48,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1554937942, now seen corresponding path program 27 times [2018-07-25 08:51:48,311 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:48,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:48,449 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 08:51:48,450 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:48,450 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-07-25 08:51:48,450 INFO L451 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-07-25 08:51:48,451 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-07-25 08:51:48,452 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:51:48,452 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 30 states. [2018-07-25 08:51:48,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:48,478 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-07-25 08:51:48,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-25 08:51:48,478 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 57 [2018-07-25 08:51:48,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:48,479 INFO L225 Difference]: With dead ends: 61 [2018-07-25 08:51:48,479 INFO L226 Difference]: Without dead ends: 60 [2018-07-25 08:51:48,480 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:51:48,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-07-25 08:51:48,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-07-25 08:51:48,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-07-25 08:51:48,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2018-07-25 08:51:48,484 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 57 [2018-07-25 08:51:48,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:48,485 INFO L472 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2018-07-25 08:51:48,485 INFO L473 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-07-25 08:51:48,485 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2018-07-25 08:51:48,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-07-25 08:51:48,489 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:48,489 INFO L354 BasicCegarLoop]: trace histogram [29, 28, 1, 1] [2018-07-25 08:51:48,490 INFO L415 AbstractCegarLoop]: === Iteration 29 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:48,490 INFO L82 PathProgramCache]: Analyzing trace with hash -353255656, now seen corresponding path program 28 times [2018-07-25 08:51:48,490 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:48,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:48,628 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 08:51:48,629 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:48,629 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-07-25 08:51:48,629 INFO L451 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-07-25 08:51:48,630 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-07-25 08:51:48,630 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-07-25 08:51:48,631 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 31 states. [2018-07-25 08:51:48,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:48,659 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-07-25 08:51:48,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-07-25 08:51:48,660 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 59 [2018-07-25 08:51:48,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:48,660 INFO L225 Difference]: With dead ends: 63 [2018-07-25 08:51:48,661 INFO L226 Difference]: Without dead ends: 62 [2018-07-25 08:51:48,661 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-07-25 08:51:48,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-07-25 08:51:48,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-07-25 08:51:48,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-07-25 08:51:48,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2018-07-25 08:51:48,667 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 59 [2018-07-25 08:51:48,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:48,667 INFO L472 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2018-07-25 08:51:48,667 INFO L473 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-07-25 08:51:48,668 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2018-07-25 08:51:48,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-07-25 08:51:48,668 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:48,669 INFO L354 BasicCegarLoop]: trace histogram [30, 29, 1, 1] [2018-07-25 08:51:48,669 INFO L415 AbstractCegarLoop]: === Iteration 30 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:48,669 INFO L82 PathProgramCache]: Analyzing trace with hash -176267942, now seen corresponding path program 29 times [2018-07-25 08:51:48,669 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:48,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:48,893 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 08:51:48,893 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:48,893 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-07-25 08:51:48,894 INFO L451 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-25 08:51:48,894 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-25 08:51:48,895 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:51:48,896 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 32 states. [2018-07-25 08:51:48,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:48,922 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-07-25 08:51:48,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-07-25 08:51:48,923 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 61 [2018-07-25 08:51:48,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:48,923 INFO L225 Difference]: With dead ends: 65 [2018-07-25 08:51:48,923 INFO L226 Difference]: Without dead ends: 64 [2018-07-25 08:51:48,924 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 08:51:48,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-07-25 08:51:48,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-07-25 08:51:48,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-07-25 08:51:48,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2018-07-25 08:51:48,929 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 61 [2018-07-25 08:51:48,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:48,929 INFO L472 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2018-07-25 08:51:48,929 INFO L473 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-25 08:51:48,929 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2018-07-25 08:51:48,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-07-25 08:51:48,930 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:48,930 INFO L354 BasicCegarLoop]: trace histogram [31, 30, 1, 1] [2018-07-25 08:51:48,930 INFO L415 AbstractCegarLoop]: === Iteration 31 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:48,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1889766628, now seen corresponding path program 30 times [2018-07-25 08:51:48,931 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:48,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:49,084 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 08:51:49,084 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:49,084 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-25 08:51:49,085 INFO L451 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-07-25 08:51:49,085 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-07-25 08:51:49,086 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 08:51:49,087 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 33 states. [2018-07-25 08:51:49,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:49,113 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-07-25 08:51:49,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-25 08:51:49,113 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 63 [2018-07-25 08:51:49,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:49,114 INFO L225 Difference]: With dead ends: 67 [2018-07-25 08:51:49,114 INFO L226 Difference]: Without dead ends: 66 [2018-07-25 08:51:49,115 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 08:51:49,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-07-25 08:51:49,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-07-25 08:51:49,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-07-25 08:51:49,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2018-07-25 08:51:49,118 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 63 [2018-07-25 08:51:49,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:49,119 INFO L472 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2018-07-25 08:51:49,119 INFO L473 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-07-25 08:51:49,119 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2018-07-25 08:51:49,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-07-25 08:51:49,119 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:49,120 INFO L354 BasicCegarLoop]: trace histogram [32, 31, 1, 1] [2018-07-25 08:51:49,120 INFO L415 AbstractCegarLoop]: === Iteration 32 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:49,120 INFO L82 PathProgramCache]: Analyzing trace with hash 705437790, now seen corresponding path program 31 times [2018-07-25 08:51:49,120 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:49,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:49,280 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 08:51:49,281 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:49,281 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-07-25 08:51:49,281 INFO L451 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-07-25 08:51:49,282 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-07-25 08:51:49,282 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:51:49,283 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 34 states. [2018-07-25 08:51:49,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:49,305 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-07-25 08:51:49,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-25 08:51:49,305 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 65 [2018-07-25 08:51:49,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:49,306 INFO L225 Difference]: With dead ends: 69 [2018-07-25 08:51:49,306 INFO L226 Difference]: Without dead ends: 68 [2018-07-25 08:51:49,307 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 08:51:49,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-07-25 08:51:49,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-07-25 08:51:49,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-07-25 08:51:49,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2018-07-25 08:51:49,311 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 65 [2018-07-25 08:51:49,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:49,311 INFO L472 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2018-07-25 08:51:49,311 INFO L473 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-07-25 08:51:49,312 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2018-07-25 08:51:49,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-07-25 08:51:49,312 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:49,312 INFO L354 BasicCegarLoop]: trace histogram [33, 32, 1, 1] [2018-07-25 08:51:49,313 INFO L415 AbstractCegarLoop]: === Iteration 33 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:49,313 INFO L82 PathProgramCache]: Analyzing trace with hash -679115488, now seen corresponding path program 32 times [2018-07-25 08:51:49,313 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:49,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:49,463 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 08:51:49,463 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:49,464 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-07-25 08:51:49,464 INFO L451 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-07-25 08:51:49,467 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-07-25 08:51:49,468 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 08:51:49,468 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 35 states. [2018-07-25 08:51:49,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:49,498 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-07-25 08:51:49,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-07-25 08:51:49,498 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 67 [2018-07-25 08:51:49,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:49,499 INFO L225 Difference]: With dead ends: 71 [2018-07-25 08:51:49,499 INFO L226 Difference]: Without dead ends: 70 [2018-07-25 08:51:49,501 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 08:51:49,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-07-25 08:51:49,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-07-25 08:51:49,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-07-25 08:51:49,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2018-07-25 08:51:49,504 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 67 [2018-07-25 08:51:49,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:49,505 INFO L472 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2018-07-25 08:51:49,505 INFO L473 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-07-25 08:51:49,505 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2018-07-25 08:51:49,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-07-25 08:51:49,506 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:49,506 INFO L354 BasicCegarLoop]: trace histogram [34, 33, 1, 1] [2018-07-25 08:51:49,507 INFO L415 AbstractCegarLoop]: === Iteration 34 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:49,507 INFO L82 PathProgramCache]: Analyzing trace with hash 205046114, now seen corresponding path program 33 times [2018-07-25 08:51:49,507 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:49,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:49,668 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 08:51:49,668 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:49,668 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-07-25 08:51:49,669 INFO L451 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-25 08:51:49,669 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-25 08:51:49,670 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 08:51:49,670 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 36 states. [2018-07-25 08:51:49,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:49,702 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-07-25 08:51:49,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-07-25 08:51:49,703 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 69 [2018-07-25 08:51:49,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:49,704 INFO L225 Difference]: With dead ends: 73 [2018-07-25 08:51:49,704 INFO L226 Difference]: Without dead ends: 72 [2018-07-25 08:51:49,705 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 08:51:49,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-07-25 08:51:49,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-07-25 08:51:49,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-07-25 08:51:49,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2018-07-25 08:51:49,708 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 69 [2018-07-25 08:51:49,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:49,708 INFO L472 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2018-07-25 08:51:49,709 INFO L473 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-25 08:51:49,709 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2018-07-25 08:51:49,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-07-25 08:51:49,709 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:49,709 INFO L354 BasicCegarLoop]: trace histogram [35, 34, 1, 1] [2018-07-25 08:51:49,710 INFO L415 AbstractCegarLoop]: === Iteration 35 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:49,710 INFO L82 PathProgramCache]: Analyzing trace with hash -519178972, now seen corresponding path program 34 times [2018-07-25 08:51:49,710 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:49,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:49,881 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 08:51:49,881 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:49,881 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-25 08:51:49,882 INFO L451 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-07-25 08:51:49,882 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-07-25 08:51:49,883 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 08:51:49,883 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 37 states. [2018-07-25 08:51:49,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:49,912 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-07-25 08:51:49,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-07-25 08:51:49,912 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 71 [2018-07-25 08:51:49,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:49,913 INFO L225 Difference]: With dead ends: 75 [2018-07-25 08:51:49,913 INFO L226 Difference]: Without dead ends: 74 [2018-07-25 08:51:49,914 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 08:51:49,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-07-25 08:51:49,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2018-07-25 08:51:49,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-07-25 08:51:49,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2018-07-25 08:51:49,917 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 71 [2018-07-25 08:51:49,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:49,918 INFO L472 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2018-07-25 08:51:49,918 INFO L473 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-07-25 08:51:49,918 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2018-07-25 08:51:49,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-07-25 08:51:49,919 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:49,919 INFO L354 BasicCegarLoop]: trace histogram [36, 35, 1, 1] [2018-07-25 08:51:49,919 INFO L415 AbstractCegarLoop]: === Iteration 36 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:49,919 INFO L82 PathProgramCache]: Analyzing trace with hash -714784666, now seen corresponding path program 35 times [2018-07-25 08:51:49,919 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:49,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:50,115 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 08:51:50,116 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:50,116 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-07-25 08:51:50,117 INFO L451 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-07-25 08:51:50,117 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-07-25 08:51:50,118 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:51:50,118 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand 38 states. [2018-07-25 08:51:50,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:50,146 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-07-25 08:51:50,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-25 08:51:50,146 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 73 [2018-07-25 08:51:50,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:50,147 INFO L225 Difference]: With dead ends: 77 [2018-07-25 08:51:50,147 INFO L226 Difference]: Without dead ends: 76 [2018-07-25 08:51:50,149 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 08:51:50,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-07-25 08:51:50,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-07-25 08:51:50,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-07-25 08:51:50,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2018-07-25 08:51:50,152 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 73 [2018-07-25 08:51:50,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:50,153 INFO L472 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2018-07-25 08:51:50,153 INFO L473 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-07-25 08:51:50,153 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2018-07-25 08:51:50,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-07-25 08:51:50,154 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:50,154 INFO L354 BasicCegarLoop]: trace histogram [37, 36, 1, 1] [2018-07-25 08:51:50,154 INFO L415 AbstractCegarLoop]: === Iteration 37 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:50,154 INFO L82 PathProgramCache]: Analyzing trace with hash 286704424, now seen corresponding path program 36 times [2018-07-25 08:51:50,155 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:50,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:50,345 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 08:51:50,345 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:50,345 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-07-25 08:51:50,346 INFO L451 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-07-25 08:51:50,346 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-07-25 08:51:50,348 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 08:51:50,348 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 39 states. [2018-07-25 08:51:50,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:50,382 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-07-25 08:51:50,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-25 08:51:50,383 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 75 [2018-07-25 08:51:50,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:50,383 INFO L225 Difference]: With dead ends: 79 [2018-07-25 08:51:50,384 INFO L226 Difference]: Without dead ends: 78 [2018-07-25 08:51:50,385 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 08:51:50,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-07-25 08:51:50,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2018-07-25 08:51:50,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-07-25 08:51:50,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2018-07-25 08:51:50,388 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 75 [2018-07-25 08:51:50,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:50,389 INFO L472 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2018-07-25 08:51:50,389 INFO L473 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-07-25 08:51:50,389 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2018-07-25 08:51:50,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-07-25 08:51:50,393 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:50,393 INFO L354 BasicCegarLoop]: trace histogram [38, 37, 1, 1] [2018-07-25 08:51:50,393 INFO L415 AbstractCegarLoop]: === Iteration 38 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:50,394 INFO L82 PathProgramCache]: Analyzing trace with hash 645045610, now seen corresponding path program 37 times [2018-07-25 08:51:50,394 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:50,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:50,595 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 08:51:50,596 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:50,596 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-07-25 08:51:50,596 INFO L451 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-25 08:51:50,597 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-25 08:51:50,598 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 08:51:50,598 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand 40 states. [2018-07-25 08:51:50,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:50,627 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-07-25 08:51:50,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-07-25 08:51:50,627 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 77 [2018-07-25 08:51:50,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:50,628 INFO L225 Difference]: With dead ends: 81 [2018-07-25 08:51:50,628 INFO L226 Difference]: Without dead ends: 80 [2018-07-25 08:51:50,629 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 08:51:50,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-07-25 08:51:50,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2018-07-25 08:51:50,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-07-25 08:51:50,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2018-07-25 08:51:50,634 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 77 [2018-07-25 08:51:50,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:50,635 INFO L472 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2018-07-25 08:51:50,635 INFO L473 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-25 08:51:50,635 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2018-07-25 08:51:50,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-07-25 08:51:50,636 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:50,636 INFO L354 BasicCegarLoop]: trace histogram [39, 38, 1, 1] [2018-07-25 08:51:50,636 INFO L415 AbstractCegarLoop]: === Iteration 39 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:50,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1413541676, now seen corresponding path program 38 times [2018-07-25 08:51:50,637 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:50,846 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 08:51:50,847 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:50,847 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-25 08:51:50,847 INFO L451 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-07-25 08:51:50,848 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-07-25 08:51:50,849 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 08:51:50,849 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 41 states. [2018-07-25 08:51:50,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:50,885 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-07-25 08:51:50,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-07-25 08:51:50,885 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 79 [2018-07-25 08:51:50,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:50,886 INFO L225 Difference]: With dead ends: 83 [2018-07-25 08:51:50,886 INFO L226 Difference]: Without dead ends: 82 [2018-07-25 08:51:50,887 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 08:51:50,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-07-25 08:51:50,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2018-07-25 08:51:50,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-07-25 08:51:50,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2018-07-25 08:51:50,891 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 79 [2018-07-25 08:51:50,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:50,891 INFO L472 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2018-07-25 08:51:50,891 INFO L473 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-07-25 08:51:50,892 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2018-07-25 08:51:50,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-07-25 08:51:50,892 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:50,893 INFO L354 BasicCegarLoop]: trace histogram [40, 39, 1, 1] [2018-07-25 08:51:50,893 INFO L415 AbstractCegarLoop]: === Iteration 40 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:50,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1203886190, now seen corresponding path program 39 times [2018-07-25 08:51:50,893 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:50,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:51,131 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 08:51:51,131 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:51,131 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-07-25 08:51:51,132 INFO L451 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-07-25 08:51:51,132 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-07-25 08:51:51,133 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 08:51:51,134 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand 42 states. [2018-07-25 08:51:51,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:51,179 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-07-25 08:51:51,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-07-25 08:51:51,179 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 81 [2018-07-25 08:51:51,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:51,180 INFO L225 Difference]: With dead ends: 85 [2018-07-25 08:51:51,180 INFO L226 Difference]: Without dead ends: 84 [2018-07-25 08:51:51,181 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 08:51:51,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-07-25 08:51:51,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2018-07-25 08:51:51,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-07-25 08:51:51,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2018-07-25 08:51:51,186 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 81 [2018-07-25 08:51:51,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:51,186 INFO L472 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2018-07-25 08:51:51,186 INFO L473 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-07-25 08:51:51,186 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2018-07-25 08:51:51,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-07-25 08:51:51,187 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:51,187 INFO L354 BasicCegarLoop]: trace histogram [41, 40, 1, 1] [2018-07-25 08:51:51,188 INFO L415 AbstractCegarLoop]: === Iteration 41 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:51,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1588427056, now seen corresponding path program 40 times [2018-07-25 08:51:51,188 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:51,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:51,444 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 08:51:51,444 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:51,444 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-07-25 08:51:51,445 INFO L451 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-07-25 08:51:51,445 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-07-25 08:51:51,446 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 08:51:51,447 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand 43 states. [2018-07-25 08:51:51,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:51,486 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-07-25 08:51:51,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-07-25 08:51:51,487 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 83 [2018-07-25 08:51:51,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:51,487 INFO L225 Difference]: With dead ends: 87 [2018-07-25 08:51:51,488 INFO L226 Difference]: Without dead ends: 86 [2018-07-25 08:51:51,489 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 08:51:51,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-07-25 08:51:51,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-07-25 08:51:51,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-07-25 08:51:51,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2018-07-25 08:51:51,493 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 83 [2018-07-25 08:51:51,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:51,493 INFO L472 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2018-07-25 08:51:51,493 INFO L473 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-07-25 08:51:51,494 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2018-07-25 08:51:51,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-07-25 08:51:51,494 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:51,495 INFO L354 BasicCegarLoop]: trace histogram [42, 41, 1, 1] [2018-07-25 08:51:51,495 INFO L415 AbstractCegarLoop]: === Iteration 42 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:51,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1765011826, now seen corresponding path program 41 times [2018-07-25 08:51:51,495 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:51,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:51,724 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 08:51:51,725 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:51,725 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-07-25 08:51:51,725 INFO L451 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-25 08:51:51,726 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-25 08:51:51,727 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:51:51,727 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 44 states. [2018-07-25 08:51:51,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:51,766 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-07-25 08:51:51,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-25 08:51:51,766 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 85 [2018-07-25 08:51:51,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:51,767 INFO L225 Difference]: With dead ends: 89 [2018-07-25 08:51:51,767 INFO L226 Difference]: Without dead ends: 88 [2018-07-25 08:51:51,768 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 08:51:51,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-07-25 08:51:51,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2018-07-25 08:51:51,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-07-25 08:51:51,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2018-07-25 08:51:51,772 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 85 [2018-07-25 08:51:51,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:51,772 INFO L472 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2018-07-25 08:51:51,773 INFO L473 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-25 08:51:51,773 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2018-07-25 08:51:51,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-07-25 08:51:51,773 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:51,774 INFO L354 BasicCegarLoop]: trace histogram [43, 42, 1, 1] [2018-07-25 08:51:51,774 INFO L415 AbstractCegarLoop]: === Iteration 43 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:51,774 INFO L82 PathProgramCache]: Analyzing trace with hash -335716044, now seen corresponding path program 42 times [2018-07-25 08:51:51,774 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:51,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:51,979 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 08:51:51,979 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:51,980 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-25 08:51:51,980 INFO L451 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-07-25 08:51:51,981 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-07-25 08:51:51,982 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 08:51:51,982 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand 45 states. [2018-07-25 08:51:52,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:52,024 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-07-25 08:51:52,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-07-25 08:51:52,025 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 87 [2018-07-25 08:51:52,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:52,026 INFO L225 Difference]: With dead ends: 91 [2018-07-25 08:51:52,026 INFO L226 Difference]: Without dead ends: 90 [2018-07-25 08:51:52,028 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 08:51:52,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-07-25 08:51:52,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2018-07-25 08:51:52,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-07-25 08:51:52,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2018-07-25 08:51:52,032 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 87 [2018-07-25 08:51:52,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:52,033 INFO L472 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2018-07-25 08:51:52,033 INFO L473 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-07-25 08:51:52,033 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2018-07-25 08:51:52,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-07-25 08:51:52,034 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:52,034 INFO L354 BasicCegarLoop]: trace histogram [44, 43, 1, 1] [2018-07-25 08:51:52,034 INFO L415 AbstractCegarLoop]: === Iteration 44 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:52,035 INFO L82 PathProgramCache]: Analyzing trace with hash -500569994, now seen corresponding path program 43 times [2018-07-25 08:51:52,035 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:52,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:52,247 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 08:51:52,248 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:52,248 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-07-25 08:51:52,248 INFO L451 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-07-25 08:51:52,249 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-07-25 08:51:52,250 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 08:51:52,250 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand 46 states. [2018-07-25 08:51:52,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:52,283 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-07-25 08:51:52,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-07-25 08:51:52,283 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 89 [2018-07-25 08:51:52,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:52,284 INFO L225 Difference]: With dead ends: 93 [2018-07-25 08:51:52,284 INFO L226 Difference]: Without dead ends: 92 [2018-07-25 08:51:52,285 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 08:51:52,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-07-25 08:51:52,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2018-07-25 08:51:52,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-07-25 08:51:52,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2018-07-25 08:51:52,290 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 89 [2018-07-25 08:51:52,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:52,290 INFO L472 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2018-07-25 08:51:52,290 INFO L473 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-07-25 08:51:52,291 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2018-07-25 08:51:52,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-07-25 08:51:52,291 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:52,292 INFO L354 BasicCegarLoop]: trace histogram [45, 44, 1, 1] [2018-07-25 08:51:52,292 INFO L415 AbstractCegarLoop]: === Iteration 45 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:52,292 INFO L82 PathProgramCache]: Analyzing trace with hash -11425992, now seen corresponding path program 44 times [2018-07-25 08:51:52,292 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:52,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:52,529 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 08:51:52,529 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:52,529 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-07-25 08:51:52,530 INFO L451 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-07-25 08:51:52,530 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-07-25 08:51:52,531 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 08:51:52,532 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand 47 states. [2018-07-25 08:51:52,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:52,580 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-07-25 08:51:52,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-07-25 08:51:52,580 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 91 [2018-07-25 08:51:52,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:52,581 INFO L225 Difference]: With dead ends: 95 [2018-07-25 08:51:52,581 INFO L226 Difference]: Without dead ends: 94 [2018-07-25 08:51:52,583 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 08:51:52,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-07-25 08:51:52,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2018-07-25 08:51:52,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-07-25 08:51:52,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2018-07-25 08:51:52,588 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 91 [2018-07-25 08:51:52,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:52,588 INFO L472 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2018-07-25 08:51:52,588 INFO L473 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-07-25 08:51:52,588 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2018-07-25 08:51:52,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-07-25 08:51:52,589 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:52,589 INFO L354 BasicCegarLoop]: trace histogram [46, 45, 1, 1] [2018-07-25 08:51:52,589 INFO L415 AbstractCegarLoop]: === Iteration 46 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:52,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1904524666, now seen corresponding path program 45 times [2018-07-25 08:51:52,590 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:52,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:52,820 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 08:51:52,821 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:52,821 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-07-25 08:51:52,821 INFO L451 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-25 08:51:52,822 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-25 08:51:52,822 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 08:51:52,823 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand 48 states. [2018-07-25 08:51:52,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:52,865 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-07-25 08:51:52,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-07-25 08:51:52,866 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 93 [2018-07-25 08:51:52,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:52,866 INFO L225 Difference]: With dead ends: 97 [2018-07-25 08:51:52,867 INFO L226 Difference]: Without dead ends: 96 [2018-07-25 08:51:52,868 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 08:51:52,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-07-25 08:51:52,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-07-25 08:51:52,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-07-25 08:51:52,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2018-07-25 08:51:52,871 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 93 [2018-07-25 08:51:52,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:52,872 INFO L472 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2018-07-25 08:51:52,872 INFO L473 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-25 08:51:52,872 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2018-07-25 08:51:52,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-07-25 08:51:52,873 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:52,873 INFO L354 BasicCegarLoop]: trace histogram [47, 46, 1, 1] [2018-07-25 08:51:52,873 INFO L415 AbstractCegarLoop]: === Iteration 47 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:52,874 INFO L82 PathProgramCache]: Analyzing trace with hash 592137020, now seen corresponding path program 46 times [2018-07-25 08:51:52,874 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:52,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:53,084 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 08:51:53,084 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:53,085 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-25 08:51:53,085 INFO L451 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-07-25 08:51:53,086 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-07-25 08:51:53,086 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 08:51:53,086 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 49 states. [2018-07-25 08:51:53,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:53,119 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-07-25 08:51:53,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-07-25 08:51:53,120 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 95 [2018-07-25 08:51:53,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:53,121 INFO L225 Difference]: With dead ends: 99 [2018-07-25 08:51:53,121 INFO L226 Difference]: Without dead ends: 98 [2018-07-25 08:51:53,122 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 08:51:53,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-07-25 08:51:53,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2018-07-25 08:51:53,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-07-25 08:51:53,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2018-07-25 08:51:53,127 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 95 [2018-07-25 08:51:53,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:53,128 INFO L472 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2018-07-25 08:51:53,128 INFO L473 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-07-25 08:51:53,128 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2018-07-25 08:51:53,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-07-25 08:51:53,129 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:53,129 INFO L354 BasicCegarLoop]: trace histogram [48, 47, 1, 1] [2018-07-25 08:51:53,129 INFO L415 AbstractCegarLoop]: === Iteration 48 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:53,129 INFO L82 PathProgramCache]: Analyzing trace with hash 2107994238, now seen corresponding path program 47 times [2018-07-25 08:51:53,130 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:53,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:53,352 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 08:51:53,353 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:53,353 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-07-25 08:51:53,354 INFO L451 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-07-25 08:51:53,354 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-07-25 08:51:53,355 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:51:53,355 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand 50 states. [2018-07-25 08:51:53,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:53,390 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-07-25 08:51:53,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-07-25 08:51:53,390 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 97 [2018-07-25 08:51:53,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:53,391 INFO L225 Difference]: With dead ends: 101 [2018-07-25 08:51:53,392 INFO L226 Difference]: Without dead ends: 100 [2018-07-25 08:51:53,393 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:51:53,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-07-25 08:51:53,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2018-07-25 08:51:53,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-07-25 08:51:53,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2018-07-25 08:51:53,399 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 97 [2018-07-25 08:51:53,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:53,399 INFO L472 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2018-07-25 08:51:53,399 INFO L473 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-07-25 08:51:53,399 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2018-07-25 08:51:53,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-07-25 08:51:53,400 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:53,400 INFO L354 BasicCegarLoop]: trace histogram [49, 48, 1, 1] [2018-07-25 08:51:53,400 INFO L415 AbstractCegarLoop]: === Iteration 49 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:53,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1442099904, now seen corresponding path program 48 times [2018-07-25 08:51:53,401 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:53,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:53,647 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 08:51:53,647 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:53,647 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-07-25 08:51:53,648 INFO L451 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-07-25 08:51:53,648 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-07-25 08:51:53,649 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 08:51:53,649 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand 51 states. [2018-07-25 08:51:53,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:53,688 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-07-25 08:51:53,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-07-25 08:51:53,689 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 99 [2018-07-25 08:51:53,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:53,690 INFO L225 Difference]: With dead ends: 103 [2018-07-25 08:51:53,690 INFO L226 Difference]: Without dead ends: 102 [2018-07-25 08:51:53,691 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 08:51:53,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-07-25 08:51:53,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2018-07-25 08:51:53,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-07-25 08:51:53,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2018-07-25 08:51:53,696 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 99 [2018-07-25 08:51:53,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:53,696 INFO L472 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2018-07-25 08:51:53,696 INFO L473 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-07-25 08:51:53,696 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2018-07-25 08:51:53,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-07-25 08:51:53,698 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:53,698 INFO L354 BasicCegarLoop]: trace histogram [50, 49, 1, 1] [2018-07-25 08:51:53,698 INFO L415 AbstractCegarLoop]: === Iteration 50 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:53,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1416429954, now seen corresponding path program 49 times [2018-07-25 08:51:53,699 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:53,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:53,957 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 08:51:53,958 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:53,958 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-07-25 08:51:53,958 INFO L451 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-25 08:51:53,959 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-25 08:51:53,960 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 08:51:53,960 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 52 states. [2018-07-25 08:51:54,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:54,005 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-07-25 08:51:54,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-07-25 08:51:54,005 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 101 [2018-07-25 08:51:54,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:54,007 INFO L225 Difference]: With dead ends: 105 [2018-07-25 08:51:54,007 INFO L226 Difference]: Without dead ends: 104 [2018-07-25 08:51:54,008 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 08:51:54,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-07-25 08:51:54,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2018-07-25 08:51:54,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-07-25 08:51:54,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2018-07-25 08:51:54,014 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 101 [2018-07-25 08:51:54,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:54,014 INFO L472 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2018-07-25 08:51:54,014 INFO L473 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-25 08:51:54,014 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2018-07-25 08:51:54,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-07-25 08:51:54,015 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:54,016 INFO L354 BasicCegarLoop]: trace histogram [51, 50, 1, 1] [2018-07-25 08:51:54,016 INFO L415 AbstractCegarLoop]: === Iteration 51 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:54,016 INFO L82 PathProgramCache]: Analyzing trace with hash -315445948, now seen corresponding path program 50 times [2018-07-25 08:51:54,017 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:54,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:54,331 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 08:51:54,332 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:54,332 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-25 08:51:54,332 INFO L451 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-07-25 08:51:54,333 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-07-25 08:51:54,333 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 08:51:54,334 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand 53 states. [2018-07-25 08:51:54,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:54,387 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-07-25 08:51:54,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-07-25 08:51:54,388 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 103 [2018-07-25 08:51:54,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:54,389 INFO L225 Difference]: With dead ends: 107 [2018-07-25 08:51:54,389 INFO L226 Difference]: Without dead ends: 106 [2018-07-25 08:51:54,390 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 08:51:54,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-07-25 08:51:54,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-07-25 08:51:54,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-07-25 08:51:54,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2018-07-25 08:51:54,397 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 103 [2018-07-25 08:51:54,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:54,398 INFO L472 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2018-07-25 08:51:54,398 INFO L473 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-07-25 08:51:54,398 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2018-07-25 08:51:54,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-07-25 08:51:54,399 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:54,399 INFO L354 BasicCegarLoop]: trace histogram [52, 51, 1, 1] [2018-07-25 08:51:54,399 INFO L415 AbstractCegarLoop]: === Iteration 52 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:54,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1799123078, now seen corresponding path program 51 times [2018-07-25 08:51:54,401 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:54,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:54,621 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 08:51:54,621 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:54,621 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-07-25 08:51:54,622 INFO L451 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-07-25 08:51:54,622 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-07-25 08:51:54,623 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 08:51:54,623 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 54 states. [2018-07-25 08:51:54,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:54,667 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-07-25 08:51:54,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-07-25 08:51:54,668 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 105 [2018-07-25 08:51:54,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:54,669 INFO L225 Difference]: With dead ends: 109 [2018-07-25 08:51:54,669 INFO L226 Difference]: Without dead ends: 108 [2018-07-25 08:51:54,670 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 08:51:54,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-07-25 08:51:54,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2018-07-25 08:51:54,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-07-25 08:51:54,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 108 transitions. [2018-07-25 08:51:54,674 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 108 transitions. Word has length 105 [2018-07-25 08:51:54,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:54,675 INFO L472 AbstractCegarLoop]: Abstraction has 108 states and 108 transitions. [2018-07-25 08:51:54,675 INFO L473 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-07-25 08:51:54,675 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 108 transitions. [2018-07-25 08:51:54,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-07-25 08:51:54,676 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:54,676 INFO L354 BasicCegarLoop]: trace histogram [53, 52, 1, 1] [2018-07-25 08:51:54,676 INFO L415 AbstractCegarLoop]: === Iteration 53 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:54,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1914541240, now seen corresponding path program 52 times [2018-07-25 08:51:54,676 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:54,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:54,905 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 08:51:54,906 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:54,906 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-07-25 08:51:54,906 INFO L451 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-07-25 08:51:54,907 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-07-25 08:51:54,908 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 08:51:54,908 INFO L87 Difference]: Start difference. First operand 108 states and 108 transitions. Second operand 55 states. [2018-07-25 08:51:54,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:54,960 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-07-25 08:51:54,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-07-25 08:51:54,961 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 107 [2018-07-25 08:51:54,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:54,962 INFO L225 Difference]: With dead ends: 111 [2018-07-25 08:51:54,962 INFO L226 Difference]: Without dead ends: 110 [2018-07-25 08:51:54,963 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 08:51:54,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-07-25 08:51:54,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2018-07-25 08:51:54,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-07-25 08:51:54,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions. [2018-07-25 08:51:54,966 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 107 [2018-07-25 08:51:54,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:54,967 INFO L472 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions. [2018-07-25 08:51:54,967 INFO L473 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-07-25 08:51:54,967 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions. [2018-07-25 08:51:54,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-07-25 08:51:54,968 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:54,968 INFO L354 BasicCegarLoop]: trace histogram [54, 53, 1, 1] [2018-07-25 08:51:54,968 INFO L415 AbstractCegarLoop]: === Iteration 54 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:54,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1628127862, now seen corresponding path program 53 times [2018-07-25 08:51:54,969 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:54,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:55,195 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 08:51:55,195 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:55,195 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-07-25 08:51:55,196 INFO L451 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-25 08:51:55,196 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-25 08:51:55,197 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:51:55,198 INFO L87 Difference]: Start difference. First operand 110 states and 110 transitions. Second operand 56 states. [2018-07-25 08:51:55,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:55,259 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-07-25 08:51:55,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-07-25 08:51:55,259 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 109 [2018-07-25 08:51:55,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:55,260 INFO L225 Difference]: With dead ends: 113 [2018-07-25 08:51:55,261 INFO L226 Difference]: Without dead ends: 112 [2018-07-25 08:51:55,262 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:51:55,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-07-25 08:51:55,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2018-07-25 08:51:55,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-07-25 08:51:55,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 112 transitions. [2018-07-25 08:51:55,266 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 112 transitions. Word has length 109 [2018-07-25 08:51:55,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:55,266 INFO L472 AbstractCegarLoop]: Abstraction has 112 states and 112 transitions. [2018-07-25 08:51:55,267 INFO L473 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-25 08:51:55,267 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 112 transitions. [2018-07-25 08:51:55,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-07-25 08:51:55,268 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:55,268 INFO L354 BasicCegarLoop]: trace histogram [55, 54, 1, 1] [2018-07-25 08:51:55,268 INFO L415 AbstractCegarLoop]: === Iteration 55 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:55,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1262778548, now seen corresponding path program 54 times [2018-07-25 08:51:55,269 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:55,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:55,506 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 08:51:55,506 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:55,506 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-25 08:51:55,507 INFO L451 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-07-25 08:51:55,508 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-07-25 08:51:55,508 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 08:51:55,509 INFO L87 Difference]: Start difference. First operand 112 states and 112 transitions. Second operand 57 states. [2018-07-25 08:51:55,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:55,570 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-07-25 08:51:55,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-07-25 08:51:55,570 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 111 [2018-07-25 08:51:55,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:55,572 INFO L225 Difference]: With dead ends: 115 [2018-07-25 08:51:55,572 INFO L226 Difference]: Without dead ends: 114 [2018-07-25 08:51:55,573 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 08:51:55,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-07-25 08:51:55,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2018-07-25 08:51:55,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-07-25 08:51:55,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 114 transitions. [2018-07-25 08:51:55,577 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 114 transitions. Word has length 111 [2018-07-25 08:51:55,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:55,578 INFO L472 AbstractCegarLoop]: Abstraction has 114 states and 114 transitions. [2018-07-25 08:51:55,578 INFO L473 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-07-25 08:51:55,578 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 114 transitions. [2018-07-25 08:51:55,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-07-25 08:51:55,579 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:55,580 INFO L354 BasicCegarLoop]: trace histogram [56, 55, 1, 1] [2018-07-25 08:51:55,580 INFO L415 AbstractCegarLoop]: === Iteration 56 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:55,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1945561230, now seen corresponding path program 55 times [2018-07-25 08:51:55,580 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:55,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:55,829 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 08:51:55,830 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:55,830 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-07-25 08:51:55,830 INFO L451 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-07-25 08:51:55,831 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-07-25 08:51:55,832 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:51:55,832 INFO L87 Difference]: Start difference. First operand 114 states and 114 transitions. Second operand 58 states. [2018-07-25 08:51:55,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:55,903 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-07-25 08:51:55,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-07-25 08:51:55,903 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 113 [2018-07-25 08:51:55,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:55,905 INFO L225 Difference]: With dead ends: 117 [2018-07-25 08:51:55,905 INFO L226 Difference]: Without dead ends: 116 [2018-07-25 08:51:55,906 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:51:55,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-07-25 08:51:55,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2018-07-25 08:51:55,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-07-25 08:51:55,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 116 transitions. [2018-07-25 08:51:55,911 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 116 transitions. Word has length 113 [2018-07-25 08:51:55,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:55,911 INFO L472 AbstractCegarLoop]: Abstraction has 116 states and 116 transitions. [2018-07-25 08:51:55,911 INFO L473 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-07-25 08:51:55,911 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 116 transitions. [2018-07-25 08:51:55,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-07-25 08:51:55,912 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:55,912 INFO L354 BasicCegarLoop]: trace histogram [57, 56, 1, 1] [2018-07-25 08:51:55,913 INFO L415 AbstractCegarLoop]: === Iteration 57 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:55,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1373569360, now seen corresponding path program 56 times [2018-07-25 08:51:55,913 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:55,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:56,173 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 08:51:56,173 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:56,173 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-07-25 08:51:56,174 INFO L451 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-07-25 08:51:56,174 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-07-25 08:51:56,175 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 08:51:56,176 INFO L87 Difference]: Start difference. First operand 116 states and 116 transitions. Second operand 59 states. [2018-07-25 08:51:56,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:56,242 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2018-07-25 08:51:56,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-07-25 08:51:56,243 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 115 [2018-07-25 08:51:56,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:56,244 INFO L225 Difference]: With dead ends: 119 [2018-07-25 08:51:56,244 INFO L226 Difference]: Without dead ends: 118 [2018-07-25 08:51:56,245 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 08:51:56,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-07-25 08:51:56,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2018-07-25 08:51:56,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-07-25 08:51:56,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 118 transitions. [2018-07-25 08:51:56,250 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 118 transitions. Word has length 115 [2018-07-25 08:51:56,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:56,250 INFO L472 AbstractCegarLoop]: Abstraction has 118 states and 118 transitions. [2018-07-25 08:51:56,250 INFO L473 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-07-25 08:51:56,250 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 118 transitions. [2018-07-25 08:51:56,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-07-25 08:51:56,251 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:56,252 INFO L354 BasicCegarLoop]: trace histogram [58, 57, 1, 1] [2018-07-25 08:51:56,252 INFO L415 AbstractCegarLoop]: === Iteration 58 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:56,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1445196178, now seen corresponding path program 57 times [2018-07-25 08:51:56,252 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:56,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:56,528 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 08:51:56,528 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:56,528 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-07-25 08:51:56,529 INFO L451 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-25 08:51:56,529 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-25 08:51:56,530 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 08:51:56,531 INFO L87 Difference]: Start difference. First operand 118 states and 118 transitions. Second operand 60 states. [2018-07-25 08:51:56,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:56,597 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-07-25 08:51:56,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-07-25 08:51:56,598 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 117 [2018-07-25 08:51:56,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:56,599 INFO L225 Difference]: With dead ends: 121 [2018-07-25 08:51:56,599 INFO L226 Difference]: Without dead ends: 120 [2018-07-25 08:51:56,600 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 08:51:56,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-07-25 08:51:56,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2018-07-25 08:51:56,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2018-07-25 08:51:56,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 120 transitions. [2018-07-25 08:51:56,605 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 120 transitions. Word has length 117 [2018-07-25 08:51:56,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:56,605 INFO L472 AbstractCegarLoop]: Abstraction has 120 states and 120 transitions. [2018-07-25 08:51:56,605 INFO L473 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-25 08:51:56,606 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 120 transitions. [2018-07-25 08:51:56,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-07-25 08:51:56,607 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:56,607 INFO L354 BasicCegarLoop]: trace histogram [59, 58, 1, 1] [2018-07-25 08:51:56,607 INFO L415 AbstractCegarLoop]: === Iteration 59 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:56,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1559091540, now seen corresponding path program 58 times [2018-07-25 08:51:56,608 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:56,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:56,940 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 08:51:56,940 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:56,940 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-25 08:51:56,941 INFO L451 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-07-25 08:51:56,942 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-07-25 08:51:56,943 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 08:51:56,943 INFO L87 Difference]: Start difference. First operand 120 states and 120 transitions. Second operand 61 states. [2018-07-25 08:51:57,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:57,017 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2018-07-25 08:51:57,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-07-25 08:51:57,018 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 119 [2018-07-25 08:51:57,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:57,019 INFO L225 Difference]: With dead ends: 123 [2018-07-25 08:51:57,019 INFO L226 Difference]: Without dead ends: 122 [2018-07-25 08:51:57,020 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 08:51:57,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-07-25 08:51:57,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2018-07-25 08:51:57,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-07-25 08:51:57,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 122 transitions. [2018-07-25 08:51:57,026 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 122 transitions. Word has length 119 [2018-07-25 08:51:57,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:57,027 INFO L472 AbstractCegarLoop]: Abstraction has 122 states and 122 transitions. [2018-07-25 08:51:57,027 INFO L473 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-07-25 08:51:57,027 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 122 transitions. [2018-07-25 08:51:57,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-07-25 08:51:57,028 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:57,028 INFO L354 BasicCegarLoop]: trace histogram [60, 59, 1, 1] [2018-07-25 08:51:57,029 INFO L415 AbstractCegarLoop]: === Iteration 60 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:57,029 INFO L82 PathProgramCache]: Analyzing trace with hash -656615274, now seen corresponding path program 59 times [2018-07-25 08:51:57,029 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:57,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:57,404 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 08:51:57,404 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:57,404 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-07-25 08:51:57,405 INFO L451 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-07-25 08:51:57,406 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-07-25 08:51:57,407 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:51:57,407 INFO L87 Difference]: Start difference. First operand 122 states and 122 transitions. Second operand 62 states. [2018-07-25 08:51:57,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:57,456 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-07-25 08:51:57,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-07-25 08:51:57,456 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 121 [2018-07-25 08:51:57,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:57,457 INFO L225 Difference]: With dead ends: 125 [2018-07-25 08:51:57,457 INFO L226 Difference]: Without dead ends: 124 [2018-07-25 08:51:57,458 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 08:51:57,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-07-25 08:51:57,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2018-07-25 08:51:57,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-07-25 08:51:57,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 124 transitions. [2018-07-25 08:51:57,463 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 124 transitions. Word has length 121 [2018-07-25 08:51:57,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:57,463 INFO L472 AbstractCegarLoop]: Abstraction has 124 states and 124 transitions. [2018-07-25 08:51:57,463 INFO L473 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-07-25 08:51:57,464 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 124 transitions. [2018-07-25 08:51:57,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-07-25 08:51:57,465 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:57,465 INFO L354 BasicCegarLoop]: trace histogram [61, 60, 1, 1] [2018-07-25 08:51:57,465 INFO L415 AbstractCegarLoop]: === Iteration 61 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:57,465 INFO L82 PathProgramCache]: Analyzing trace with hash 352915288, now seen corresponding path program 60 times [2018-07-25 08:51:57,465 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:57,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:57,725 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 08:51:57,725 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:57,725 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-07-25 08:51:57,726 INFO L451 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-07-25 08:51:57,726 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-07-25 08:51:57,727 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 08:51:57,728 INFO L87 Difference]: Start difference. First operand 124 states and 124 transitions. Second operand 63 states. [2018-07-25 08:51:57,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:57,796 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2018-07-25 08:51:57,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-07-25 08:51:57,796 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 123 [2018-07-25 08:51:57,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:57,797 INFO L225 Difference]: With dead ends: 127 [2018-07-25 08:51:57,797 INFO L226 Difference]: Without dead ends: 126 [2018-07-25 08:51:57,799 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 08:51:57,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-07-25 08:51:57,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2018-07-25 08:51:57,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-07-25 08:51:57,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 126 transitions. [2018-07-25 08:51:57,803 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 126 transitions. Word has length 123 [2018-07-25 08:51:57,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:57,803 INFO L472 AbstractCegarLoop]: Abstraction has 126 states and 126 transitions. [2018-07-25 08:51:57,803 INFO L473 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-07-25 08:51:57,804 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 126 transitions. [2018-07-25 08:51:57,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-07-25 08:51:57,805 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:57,805 INFO L354 BasicCegarLoop]: trace histogram [62, 61, 1, 1] [2018-07-25 08:51:57,805 INFO L415 AbstractCegarLoop]: === Iteration 62 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:57,805 INFO L82 PathProgramCache]: Analyzing trace with hash -150823526, now seen corresponding path program 61 times [2018-07-25 08:51:57,806 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:57,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:58,047 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 08:51:58,048 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:58,048 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-07-25 08:51:58,048 INFO L451 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-25 08:51:58,049 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-25 08:51:58,050 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:51:58,050 INFO L87 Difference]: Start difference. First operand 126 states and 126 transitions. Second operand 64 states. [2018-07-25 08:51:58,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:58,102 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-07-25 08:51:58,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-07-25 08:51:58,102 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 125 [2018-07-25 08:51:58,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:58,103 INFO L225 Difference]: With dead ends: 129 [2018-07-25 08:51:58,103 INFO L226 Difference]: Without dead ends: 128 [2018-07-25 08:51:58,105 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:51:58,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-07-25 08:51:58,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2018-07-25 08:51:58,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-07-25 08:51:58,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 128 transitions. [2018-07-25 08:51:58,109 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 128 transitions. Word has length 125 [2018-07-25 08:51:58,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:58,109 INFO L472 AbstractCegarLoop]: Abstraction has 128 states and 128 transitions. [2018-07-25 08:51:58,109 INFO L473 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-25 08:51:58,109 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 128 transitions. [2018-07-25 08:51:58,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-07-25 08:51:58,111 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:58,111 INFO L354 BasicCegarLoop]: trace histogram [63, 62, 1, 1] [2018-07-25 08:51:58,111 INFO L415 AbstractCegarLoop]: === Iteration 63 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:58,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1087480668, now seen corresponding path program 62 times [2018-07-25 08:51:58,111 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:58,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:58,372 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 08:51:58,373 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:58,373 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-25 08:51:58,373 INFO L451 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-07-25 08:51:58,374 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-07-25 08:51:58,375 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:51:58,375 INFO L87 Difference]: Start difference. First operand 128 states and 128 transitions. Second operand 65 states. [2018-07-25 08:51:58,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:58,456 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2018-07-25 08:51:58,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-07-25 08:51:58,456 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 127 [2018-07-25 08:51:58,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:58,458 INFO L225 Difference]: With dead ends: 131 [2018-07-25 08:51:58,458 INFO L226 Difference]: Without dead ends: 130 [2018-07-25 08:51:58,459 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:51:58,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-07-25 08:51:58,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2018-07-25 08:51:58,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-07-25 08:51:58,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 130 transitions. [2018-07-25 08:51:58,464 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 130 transitions. Word has length 127 [2018-07-25 08:51:58,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:58,464 INFO L472 AbstractCegarLoop]: Abstraction has 130 states and 130 transitions. [2018-07-25 08:51:58,464 INFO L473 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-07-25 08:51:58,465 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 130 transitions. [2018-07-25 08:51:58,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-07-25 08:51:58,466 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:58,466 INFO L354 BasicCegarLoop]: trace histogram [64, 63, 1, 1] [2018-07-25 08:51:58,466 INFO L415 AbstractCegarLoop]: === Iteration 64 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:58,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1391870110, now seen corresponding path program 63 times [2018-07-25 08:51:58,467 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:58,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:58,730 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 08:51:58,730 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:58,731 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-07-25 08:51:58,731 INFO L451 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-07-25 08:51:58,732 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-07-25 08:51:58,732 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:51:58,733 INFO L87 Difference]: Start difference. First operand 130 states and 130 transitions. Second operand 66 states. [2018-07-25 08:51:58,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:58,785 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-07-25 08:51:58,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-07-25 08:51:58,785 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 129 [2018-07-25 08:51:58,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:58,786 INFO L225 Difference]: With dead ends: 133 [2018-07-25 08:51:58,786 INFO L226 Difference]: Without dead ends: 132 [2018-07-25 08:51:58,787 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:51:58,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-07-25 08:51:58,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2018-07-25 08:51:58,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-07-25 08:51:58,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 132 transitions. [2018-07-25 08:51:58,795 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 132 transitions. Word has length 129 [2018-07-25 08:51:58,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:58,795 INFO L472 AbstractCegarLoop]: Abstraction has 132 states and 132 transitions. [2018-07-25 08:51:58,795 INFO L473 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-07-25 08:51:58,795 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 132 transitions. [2018-07-25 08:51:58,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-07-25 08:51:58,797 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:58,797 INFO L354 BasicCegarLoop]: trace histogram [65, 64, 1, 1] [2018-07-25 08:51:58,797 INFO L415 AbstractCegarLoop]: === Iteration 65 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:58,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1852347744, now seen corresponding path program 64 times [2018-07-25 08:51:58,798 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:58,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:59,074 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 08:51:59,074 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:59,075 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-07-25 08:51:59,075 INFO L451 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-07-25 08:51:59,076 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-07-25 08:51:59,077 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 08:51:59,077 INFO L87 Difference]: Start difference. First operand 132 states and 132 transitions. Second operand 67 states. [2018-07-25 08:51:59,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:59,160 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2018-07-25 08:51:59,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-07-25 08:51:59,160 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 131 [2018-07-25 08:51:59,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:59,161 INFO L225 Difference]: With dead ends: 135 [2018-07-25 08:51:59,165 INFO L226 Difference]: Without dead ends: 134 [2018-07-25 08:51:59,166 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 08:51:59,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-07-25 08:51:59,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2018-07-25 08:51:59,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-07-25 08:51:59,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 134 transitions. [2018-07-25 08:51:59,171 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 134 transitions. Word has length 131 [2018-07-25 08:51:59,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:59,172 INFO L472 AbstractCegarLoop]: Abstraction has 134 states and 134 transitions. [2018-07-25 08:51:59,172 INFO L473 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-07-25 08:51:59,172 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 134 transitions. [2018-07-25 08:51:59,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-07-25 08:51:59,173 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:59,174 INFO L354 BasicCegarLoop]: trace histogram [66, 65, 1, 1] [2018-07-25 08:51:59,174 INFO L415 AbstractCegarLoop]: === Iteration 66 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:59,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1989722530, now seen corresponding path program 65 times [2018-07-25 08:51:59,174 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:59,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:59,460 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 08:51:59,460 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:59,460 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-07-25 08:51:59,461 INFO L451 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-25 08:51:59,462 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-25 08:51:59,462 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:51:59,462 INFO L87 Difference]: Start difference. First operand 134 states and 134 transitions. Second operand 68 states. [2018-07-25 08:51:59,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:59,549 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-07-25 08:51:59,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-07-25 08:51:59,549 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 133 [2018-07-25 08:51:59,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:59,550 INFO L225 Difference]: With dead ends: 137 [2018-07-25 08:51:59,550 INFO L226 Difference]: Without dead ends: 136 [2018-07-25 08:51:59,551 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:51:59,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2018-07-25 08:51:59,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2018-07-25 08:51:59,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-07-25 08:51:59,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 136 transitions. [2018-07-25 08:51:59,558 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 136 transitions. Word has length 133 [2018-07-25 08:51:59,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:59,558 INFO L472 AbstractCegarLoop]: Abstraction has 136 states and 136 transitions. [2018-07-25 08:51:59,559 INFO L473 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-25 08:51:59,559 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 136 transitions. [2018-07-25 08:51:59,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-07-25 08:51:59,560 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:59,560 INFO L354 BasicCegarLoop]: trace histogram [67, 66, 1, 1] [2018-07-25 08:51:59,560 INFO L415 AbstractCegarLoop]: === Iteration 67 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:59,561 INFO L82 PathProgramCache]: Analyzing trace with hash 862905700, now seen corresponding path program 66 times [2018-07-25 08:51:59,561 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:59,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:59,875 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 08:51:59,875 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:59,876 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-25 08:51:59,876 INFO L451 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-07-25 08:51:59,877 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-07-25 08:51:59,877 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 08:51:59,877 INFO L87 Difference]: Start difference. First operand 136 states and 136 transitions. Second operand 69 states. [2018-07-25 08:51:59,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:59,960 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2018-07-25 08:51:59,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-07-25 08:51:59,960 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 135 [2018-07-25 08:51:59,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:59,961 INFO L225 Difference]: With dead ends: 139 [2018-07-25 08:51:59,961 INFO L226 Difference]: Without dead ends: 138 [2018-07-25 08:51:59,962 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 08:51:59,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-07-25 08:51:59,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2018-07-25 08:51:59,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-07-25 08:51:59,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 138 transitions. [2018-07-25 08:51:59,967 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 138 transitions. Word has length 135 [2018-07-25 08:51:59,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:59,968 INFO L472 AbstractCegarLoop]: Abstraction has 138 states and 138 transitions. [2018-07-25 08:51:59,968 INFO L473 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-07-25 08:51:59,968 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 138 transitions. [2018-07-25 08:51:59,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-07-25 08:51:59,970 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:59,970 INFO L354 BasicCegarLoop]: trace histogram [68, 67, 1, 1] [2018-07-25 08:51:59,970 INFO L415 AbstractCegarLoop]: === Iteration 68 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:59,970 INFO L82 PathProgramCache]: Analyzing trace with hash 323690662, now seen corresponding path program 67 times [2018-07-25 08:51:59,970 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:00,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:00,261 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 08:52:00,261 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:00,261 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-07-25 08:52:00,262 INFO L451 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-07-25 08:52:00,263 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-07-25 08:52:00,263 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:52:00,264 INFO L87 Difference]: Start difference. First operand 138 states and 138 transitions. Second operand 70 states. [2018-07-25 08:52:00,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:00,323 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-07-25 08:52:00,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-07-25 08:52:00,323 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 137 [2018-07-25 08:52:00,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:00,325 INFO L225 Difference]: With dead ends: 141 [2018-07-25 08:52:00,325 INFO L226 Difference]: Without dead ends: 140 [2018-07-25 08:52:00,325 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:52:00,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-07-25 08:52:00,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2018-07-25 08:52:00,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-07-25 08:52:00,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 140 transitions. [2018-07-25 08:52:00,330 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 140 transitions. Word has length 137 [2018-07-25 08:52:00,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:00,331 INFO L472 AbstractCegarLoop]: Abstraction has 140 states and 140 transitions. [2018-07-25 08:52:00,331 INFO L473 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-07-25 08:52:00,331 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 140 transitions. [2018-07-25 08:52:00,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-07-25 08:52:00,332 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:00,332 INFO L354 BasicCegarLoop]: trace histogram [69, 68, 1, 1] [2018-07-25 08:52:00,332 INFO L415 AbstractCegarLoop]: === Iteration 69 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:00,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1829081960, now seen corresponding path program 68 times [2018-07-25 08:52:00,333 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:00,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:00,598 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 08:52:00,598 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:00,598 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-07-25 08:52:00,599 INFO L451 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-07-25 08:52:00,600 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-07-25 08:52:00,600 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 08:52:00,601 INFO L87 Difference]: Start difference. First operand 140 states and 140 transitions. Second operand 71 states. [2018-07-25 08:52:00,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:00,653 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-07-25 08:52:00,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-07-25 08:52:00,653 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 139 [2018-07-25 08:52:00,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:00,654 INFO L225 Difference]: With dead ends: 143 [2018-07-25 08:52:00,654 INFO L226 Difference]: Without dead ends: 142 [2018-07-25 08:52:00,655 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 08:52:00,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2018-07-25 08:52:00,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2018-07-25 08:52:00,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-07-25 08:52:00,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 142 transitions. [2018-07-25 08:52:00,660 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 142 transitions. Word has length 139 [2018-07-25 08:52:00,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:00,660 INFO L472 AbstractCegarLoop]: Abstraction has 142 states and 142 transitions. [2018-07-25 08:52:00,660 INFO L473 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-07-25 08:52:00,660 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 142 transitions. [2018-07-25 08:52:00,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-07-25 08:52:00,663 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:00,663 INFO L354 BasicCegarLoop]: trace histogram [70, 69, 1, 1] [2018-07-25 08:52:00,663 INFO L415 AbstractCegarLoop]: === Iteration 70 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:00,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1106140586, now seen corresponding path program 69 times [2018-07-25 08:52:00,664 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:00,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:00,942 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 08:52:00,943 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:00,943 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-07-25 08:52:00,943 INFO L451 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-25 08:52:00,944 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-25 08:52:00,945 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:52:00,945 INFO L87 Difference]: Start difference. First operand 142 states and 142 transitions. Second operand 72 states. [2018-07-25 08:52:00,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:01,000 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-07-25 08:52:01,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-07-25 08:52:01,000 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 141 [2018-07-25 08:52:01,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:01,001 INFO L225 Difference]: With dead ends: 145 [2018-07-25 08:52:01,001 INFO L226 Difference]: Without dead ends: 144 [2018-07-25 08:52:01,002 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:52:01,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-07-25 08:52:01,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2018-07-25 08:52:01,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-07-25 08:52:01,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 144 transitions. [2018-07-25 08:52:01,008 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 144 transitions. Word has length 141 [2018-07-25 08:52:01,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:01,008 INFO L472 AbstractCegarLoop]: Abstraction has 144 states and 144 transitions. [2018-07-25 08:52:01,009 INFO L473 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-25 08:52:01,009 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 144 transitions. [2018-07-25 08:52:01,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-07-25 08:52:01,010 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:01,010 INFO L354 BasicCegarLoop]: trace histogram [71, 70, 1, 1] [2018-07-25 08:52:01,010 INFO L415 AbstractCegarLoop]: === Iteration 71 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:01,011 INFO L82 PathProgramCache]: Analyzing trace with hash 2144182124, now seen corresponding path program 70 times [2018-07-25 08:52:01,011 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:01,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:01,293 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 08:52:01,293 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:01,293 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-25 08:52:01,293 INFO L451 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-07-25 08:52:01,294 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-07-25 08:52:01,295 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 08:52:01,295 INFO L87 Difference]: Start difference. First operand 144 states and 144 transitions. Second operand 73 states. [2018-07-25 08:52:01,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:01,357 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2018-07-25 08:52:01,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-07-25 08:52:01,357 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 143 [2018-07-25 08:52:01,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:01,358 INFO L225 Difference]: With dead ends: 147 [2018-07-25 08:52:01,359 INFO L226 Difference]: Without dead ends: 146 [2018-07-25 08:52:01,359 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 08:52:01,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-07-25 08:52:01,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2018-07-25 08:52:01,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-07-25 08:52:01,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 146 transitions. [2018-07-25 08:52:01,364 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 146 transitions. Word has length 143 [2018-07-25 08:52:01,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:01,364 INFO L472 AbstractCegarLoop]: Abstraction has 146 states and 146 transitions. [2018-07-25 08:52:01,365 INFO L473 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-07-25 08:52:01,365 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 146 transitions. [2018-07-25 08:52:01,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-07-25 08:52:01,366 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:01,366 INFO L354 BasicCegarLoop]: trace histogram [72, 71, 1, 1] [2018-07-25 08:52:01,366 INFO L415 AbstractCegarLoop]: === Iteration 72 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:01,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1025279826, now seen corresponding path program 71 times [2018-07-25 08:52:01,367 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:01,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:01,657 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 08:52:01,658 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:01,658 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-07-25 08:52:01,658 INFO L451 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-07-25 08:52:01,659 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-07-25 08:52:01,660 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:52:01,660 INFO L87 Difference]: Start difference. First operand 146 states and 146 transitions. Second operand 74 states. [2018-07-25 08:52:01,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:01,765 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-07-25 08:52:01,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-07-25 08:52:01,765 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 145 [2018-07-25 08:52:01,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:01,767 INFO L225 Difference]: With dead ends: 149 [2018-07-25 08:52:01,767 INFO L226 Difference]: Without dead ends: 148 [2018-07-25 08:52:01,768 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:52:01,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-07-25 08:52:01,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2018-07-25 08:52:01,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-07-25 08:52:01,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 148 transitions. [2018-07-25 08:52:01,773 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 148 transitions. Word has length 145 [2018-07-25 08:52:01,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:01,773 INFO L472 AbstractCegarLoop]: Abstraction has 148 states and 148 transitions. [2018-07-25 08:52:01,774 INFO L473 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-07-25 08:52:01,774 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 148 transitions. [2018-07-25 08:52:01,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-07-25 08:52:01,775 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:01,775 INFO L354 BasicCegarLoop]: trace histogram [73, 72, 1, 1] [2018-07-25 08:52:01,776 INFO L415 AbstractCegarLoop]: === Iteration 73 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:01,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1746400912, now seen corresponding path program 72 times [2018-07-25 08:52:01,776 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:01,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:02,111 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 08:52:02,111 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:02,111 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-07-25 08:52:02,112 INFO L451 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-07-25 08:52:02,113 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-07-25 08:52:02,113 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 08:52:02,114 INFO L87 Difference]: Start difference. First operand 148 states and 148 transitions. Second operand 75 states. [2018-07-25 08:52:02,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:02,232 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2018-07-25 08:52:02,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-07-25 08:52:02,232 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 147 [2018-07-25 08:52:02,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:02,233 INFO L225 Difference]: With dead ends: 151 [2018-07-25 08:52:02,233 INFO L226 Difference]: Without dead ends: 150 [2018-07-25 08:52:02,234 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 08:52:02,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-07-25 08:52:02,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2018-07-25 08:52:02,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-07-25 08:52:02,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 150 transitions. [2018-07-25 08:52:02,240 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 150 transitions. Word has length 147 [2018-07-25 08:52:02,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:02,241 INFO L472 AbstractCegarLoop]: Abstraction has 150 states and 150 transitions. [2018-07-25 08:52:02,241 INFO L473 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-07-25 08:52:02,241 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 150 transitions. [2018-07-25 08:52:02,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-07-25 08:52:02,242 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:02,243 INFO L354 BasicCegarLoop]: trace histogram [74, 73, 1, 1] [2018-07-25 08:52:02,243 INFO L415 AbstractCegarLoop]: === Iteration 74 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:02,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1040937394, now seen corresponding path program 73 times [2018-07-25 08:52:02,243 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:02,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:02,646 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 08:52:02,646 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:02,647 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2018-07-25 08:52:02,647 INFO L451 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-25 08:52:02,648 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-25 08:52:02,649 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:52:02,649 INFO L87 Difference]: Start difference. First operand 150 states and 150 transitions. Second operand 76 states. [2018-07-25 08:52:02,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:02,768 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2018-07-25 08:52:02,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-07-25 08:52:02,768 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 149 [2018-07-25 08:52:02,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:02,769 INFO L225 Difference]: With dead ends: 153 [2018-07-25 08:52:02,770 INFO L226 Difference]: Without dead ends: 152 [2018-07-25 08:52:02,770 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 08:52:02,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2018-07-25 08:52:02,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2018-07-25 08:52:02,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2018-07-25 08:52:02,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 152 transitions. [2018-07-25 08:52:02,777 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 152 transitions. Word has length 149 [2018-07-25 08:52:02,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:02,778 INFO L472 AbstractCegarLoop]: Abstraction has 152 states and 152 transitions. [2018-07-25 08:52:02,778 INFO L473 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-25 08:52:02,778 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 152 transitions. [2018-07-25 08:52:02,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-07-25 08:52:02,779 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:02,780 INFO L354 BasicCegarLoop]: trace histogram [75, 74, 1, 1] [2018-07-25 08:52:02,780 INFO L415 AbstractCegarLoop]: === Iteration 75 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:02,780 INFO L82 PathProgramCache]: Analyzing trace with hash -386543244, now seen corresponding path program 74 times [2018-07-25 08:52:02,780 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:02,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:03,090 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 08:52:03,091 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:03,091 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-25 08:52:03,092 INFO L451 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-07-25 08:52:03,093 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-07-25 08:52:03,094 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 08:52:03,094 INFO L87 Difference]: Start difference. First operand 152 states and 152 transitions. Second operand 77 states. [2018-07-25 08:52:03,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:03,180 INFO L93 Difference]: Finished difference Result 155 states and 155 transitions. [2018-07-25 08:52:03,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-07-25 08:52:03,181 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 151 [2018-07-25 08:52:03,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:03,182 INFO L225 Difference]: With dead ends: 155 [2018-07-25 08:52:03,182 INFO L226 Difference]: Without dead ends: 154 [2018-07-25 08:52:03,183 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 08:52:03,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-07-25 08:52:03,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2018-07-25 08:52:03,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-07-25 08:52:03,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 154 transitions. [2018-07-25 08:52:03,188 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 154 transitions. Word has length 151 [2018-07-25 08:52:03,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:03,188 INFO L472 AbstractCegarLoop]: Abstraction has 154 states and 154 transitions. [2018-07-25 08:52:03,188 INFO L473 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-07-25 08:52:03,188 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 154 transitions. [2018-07-25 08:52:03,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-07-25 08:52:03,190 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:03,190 INFO L354 BasicCegarLoop]: trace histogram [76, 75, 1, 1] [2018-07-25 08:52:03,190 INFO L415 AbstractCegarLoop]: === Iteration 76 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:03,190 INFO L82 PathProgramCache]: Analyzing trace with hash -2100868938, now seen corresponding path program 75 times [2018-07-25 08:52:03,191 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:03,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:03,480 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 08:52:03,481 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:03,481 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-07-25 08:52:03,481 INFO L451 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-07-25 08:52:03,482 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-07-25 08:52:03,483 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 08:52:03,483 INFO L87 Difference]: Start difference. First operand 154 states and 154 transitions. Second operand 78 states. [2018-07-25 08:52:03,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:03,600 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-07-25 08:52:03,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-07-25 08:52:03,601 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 153 [2018-07-25 08:52:03,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:03,602 INFO L225 Difference]: With dead ends: 157 [2018-07-25 08:52:03,602 INFO L226 Difference]: Without dead ends: 156 [2018-07-25 08:52:03,603 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 08:52:03,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-07-25 08:52:03,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2018-07-25 08:52:03,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-07-25 08:52:03,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 156 transitions. [2018-07-25 08:52:03,609 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 156 transitions. Word has length 153 [2018-07-25 08:52:03,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:03,610 INFO L472 AbstractCegarLoop]: Abstraction has 156 states and 156 transitions. [2018-07-25 08:52:03,610 INFO L473 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-07-25 08:52:03,610 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 156 transitions. [2018-07-25 08:52:03,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-07-25 08:52:03,611 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:03,611 INFO L354 BasicCegarLoop]: trace histogram [77, 76, 1, 1] [2018-07-25 08:52:03,612 INFO L415 AbstractCegarLoop]: === Iteration 77 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:03,612 INFO L82 PathProgramCache]: Analyzing trace with hash -300419208, now seen corresponding path program 76 times [2018-07-25 08:52:03,612 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:03,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:03,908 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 08:52:03,908 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:03,909 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-07-25 08:52:03,909 INFO L451 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-07-25 08:52:03,910 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-07-25 08:52:03,911 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 08:52:03,911 INFO L87 Difference]: Start difference. First operand 156 states and 156 transitions. Second operand 79 states. [2018-07-25 08:52:03,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:03,989 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2018-07-25 08:52:03,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-07-25 08:52:03,989 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 155 [2018-07-25 08:52:03,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:03,990 INFO L225 Difference]: With dead ends: 159 [2018-07-25 08:52:03,990 INFO L226 Difference]: Without dead ends: 158 [2018-07-25 08:52:03,991 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 08:52:03,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-07-25 08:52:03,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2018-07-25 08:52:03,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-07-25 08:52:03,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 158 transitions. [2018-07-25 08:52:03,997 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 158 transitions. Word has length 155 [2018-07-25 08:52:03,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:03,997 INFO L472 AbstractCegarLoop]: Abstraction has 158 states and 158 transitions. [2018-07-25 08:52:03,997 INFO L473 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-07-25 08:52:03,998 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 158 transitions. [2018-07-25 08:52:03,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-07-25 08:52:03,999 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:03,999 INFO L354 BasicCegarLoop]: trace histogram [78, 77, 1, 1] [2018-07-25 08:52:03,999 INFO L415 AbstractCegarLoop]: === Iteration 78 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:04,000 INFO L82 PathProgramCache]: Analyzing trace with hash -940048966, now seen corresponding path program 77 times [2018-07-25 08:52:04,000 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:04,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:04,322 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 08:52:04,322 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:04,322 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2018-07-25 08:52:04,323 INFO L451 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-25 08:52:04,324 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-25 08:52:04,325 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:52:04,325 INFO L87 Difference]: Start difference. First operand 158 states and 158 transitions. Second operand 80 states. [2018-07-25 08:52:04,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:04,460 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2018-07-25 08:52:04,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-07-25 08:52:04,460 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 157 [2018-07-25 08:52:04,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:04,462 INFO L225 Difference]: With dead ends: 161 [2018-07-25 08:52:04,462 INFO L226 Difference]: Without dead ends: 160 [2018-07-25 08:52:04,463 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:52:04,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-07-25 08:52:04,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2018-07-25 08:52:04,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2018-07-25 08:52:04,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 160 transitions. [2018-07-25 08:52:04,468 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 160 transitions. Word has length 157 [2018-07-25 08:52:04,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:04,469 INFO L472 AbstractCegarLoop]: Abstraction has 160 states and 160 transitions. [2018-07-25 08:52:04,469 INFO L473 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-25 08:52:04,469 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 160 transitions. [2018-07-25 08:52:04,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-07-25 08:52:04,470 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:04,471 INFO L354 BasicCegarLoop]: trace histogram [79, 78, 1, 1] [2018-07-25 08:52:04,471 INFO L415 AbstractCegarLoop]: === Iteration 79 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:04,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1443923076, now seen corresponding path program 78 times [2018-07-25 08:52:04,471 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:04,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:04,788 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 08:52:04,789 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:04,789 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-25 08:52:04,789 INFO L451 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-07-25 08:52:04,790 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-07-25 08:52:04,791 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 08:52:04,791 INFO L87 Difference]: Start difference. First operand 160 states and 160 transitions. Second operand 81 states. [2018-07-25 08:52:04,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:04,911 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2018-07-25 08:52:04,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-07-25 08:52:04,911 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 159 [2018-07-25 08:52:04,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:04,912 INFO L225 Difference]: With dead ends: 163 [2018-07-25 08:52:04,913 INFO L226 Difference]: Without dead ends: 162 [2018-07-25 08:52:04,914 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 08:52:04,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2018-07-25 08:52:04,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2018-07-25 08:52:04,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2018-07-25 08:52:04,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 162 transitions. [2018-07-25 08:52:04,919 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 162 transitions. Word has length 159 [2018-07-25 08:52:04,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:04,919 INFO L472 AbstractCegarLoop]: Abstraction has 162 states and 162 transitions. [2018-07-25 08:52:04,919 INFO L473 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-07-25 08:52:04,919 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 162 transitions. [2018-07-25 08:52:04,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-07-25 08:52:04,921 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:04,921 INFO L354 BasicCegarLoop]: trace histogram [80, 79, 1, 1] [2018-07-25 08:52:04,921 INFO L415 AbstractCegarLoop]: === Iteration 80 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:04,921 INFO L82 PathProgramCache]: Analyzing trace with hash -335638338, now seen corresponding path program 79 times [2018-07-25 08:52:04,921 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:04,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:05,247 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 08:52:05,247 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:05,247 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-07-25 08:52:05,248 INFO L451 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-07-25 08:52:05,248 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-07-25 08:52:05,249 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 08:52:05,250 INFO L87 Difference]: Start difference. First operand 162 states and 162 transitions. Second operand 82 states. [2018-07-25 08:52:05,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:05,314 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2018-07-25 08:52:05,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-07-25 08:52:05,315 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 161 [2018-07-25 08:52:05,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:05,316 INFO L225 Difference]: With dead ends: 165 [2018-07-25 08:52:05,316 INFO L226 Difference]: Without dead ends: 164 [2018-07-25 08:52:05,317 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 08:52:05,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2018-07-25 08:52:05,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2018-07-25 08:52:05,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-07-25 08:52:05,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 164 transitions. [2018-07-25 08:52:05,322 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 164 transitions. Word has length 161 [2018-07-25 08:52:05,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:05,322 INFO L472 AbstractCegarLoop]: Abstraction has 164 states and 164 transitions. [2018-07-25 08:52:05,322 INFO L473 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-07-25 08:52:05,322 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 164 transitions. [2018-07-25 08:52:05,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-07-25 08:52:05,324 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:05,324 INFO L354 BasicCegarLoop]: trace histogram [81, 80, 1, 1] [2018-07-25 08:52:05,324 INFO L415 AbstractCegarLoop]: === Iteration 81 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:05,324 INFO L82 PathProgramCache]: Analyzing trace with hash -425894528, now seen corresponding path program 80 times [2018-07-25 08:52:05,325 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:05,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:05,652 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 08:52:05,652 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:05,652 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-07-25 08:52:05,653 INFO L451 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-07-25 08:52:05,654 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-07-25 08:52:05,655 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 08:52:05,655 INFO L87 Difference]: Start difference. First operand 164 states and 164 transitions. Second operand 83 states. [2018-07-25 08:52:05,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:05,785 INFO L93 Difference]: Finished difference Result 167 states and 167 transitions. [2018-07-25 08:52:05,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-07-25 08:52:05,785 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 163 [2018-07-25 08:52:05,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:05,787 INFO L225 Difference]: With dead ends: 167 [2018-07-25 08:52:05,787 INFO L226 Difference]: Without dead ends: 166 [2018-07-25 08:52:05,788 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 08:52:05,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-07-25 08:52:05,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2018-07-25 08:52:05,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2018-07-25 08:52:05,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 166 transitions. [2018-07-25 08:52:05,793 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 166 transitions. Word has length 163 [2018-07-25 08:52:05,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:05,793 INFO L472 AbstractCegarLoop]: Abstraction has 166 states and 166 transitions. [2018-07-25 08:52:05,794 INFO L473 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-07-25 08:52:05,794 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 166 transitions. [2018-07-25 08:52:05,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-07-25 08:52:05,795 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:05,796 INFO L354 BasicCegarLoop]: trace histogram [82, 81, 1, 1] [2018-07-25 08:52:05,796 INFO L415 AbstractCegarLoop]: === Iteration 82 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:05,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1262747198, now seen corresponding path program 81 times [2018-07-25 08:52:05,796 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:05,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:06,156 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 08:52:06,156 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:06,156 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2018-07-25 08:52:06,157 INFO L451 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-07-25 08:52:06,158 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-07-25 08:52:06,159 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 08:52:06,159 INFO L87 Difference]: Start difference. First operand 166 states and 166 transitions. Second operand 84 states. [2018-07-25 08:52:06,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:06,303 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-07-25 08:52:06,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-07-25 08:52:06,303 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 165 [2018-07-25 08:52:06,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:06,304 INFO L225 Difference]: With dead ends: 169 [2018-07-25 08:52:06,305 INFO L226 Difference]: Without dead ends: 168 [2018-07-25 08:52:06,306 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 08:52:06,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2018-07-25 08:52:06,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2018-07-25 08:52:06,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2018-07-25 08:52:06,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 168 transitions. [2018-07-25 08:52:06,310 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 168 transitions. Word has length 165 [2018-07-25 08:52:06,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:06,310 INFO L472 AbstractCegarLoop]: Abstraction has 168 states and 168 transitions. [2018-07-25 08:52:06,311 INFO L473 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-07-25 08:52:06,311 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 168 transitions. [2018-07-25 08:52:06,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-07-25 08:52:06,312 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:06,313 INFO L354 BasicCegarLoop]: trace histogram [83, 82, 1, 1] [2018-07-25 08:52:06,313 INFO L415 AbstractCegarLoop]: === Iteration 83 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:06,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1975688580, now seen corresponding path program 82 times [2018-07-25 08:52:06,313 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:06,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:06,645 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 08:52:06,645 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:06,646 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-07-25 08:52:06,646 INFO L451 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-07-25 08:52:06,647 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-07-25 08:52:06,648 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 08:52:06,648 INFO L87 Difference]: Start difference. First operand 168 states and 168 transitions. Second operand 85 states. [2018-07-25 08:52:06,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:06,805 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2018-07-25 08:52:06,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-07-25 08:52:06,805 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 167 [2018-07-25 08:52:06,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:06,806 INFO L225 Difference]: With dead ends: 171 [2018-07-25 08:52:06,806 INFO L226 Difference]: Without dead ends: 170 [2018-07-25 08:52:06,807 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 08:52:06,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-07-25 08:52:06,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2018-07-25 08:52:06,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2018-07-25 08:52:06,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 170 transitions. [2018-07-25 08:52:06,812 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 170 transitions. Word has length 167 [2018-07-25 08:52:06,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:06,813 INFO L472 AbstractCegarLoop]: Abstraction has 170 states and 170 transitions. [2018-07-25 08:52:06,813 INFO L473 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-07-25 08:52:06,813 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 170 transitions. [2018-07-25 08:52:06,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-07-25 08:52:06,815 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:06,815 INFO L354 BasicCegarLoop]: trace histogram [84, 83, 1, 1] [2018-07-25 08:52:06,815 INFO L415 AbstractCegarLoop]: === Iteration 84 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:06,815 INFO L82 PathProgramCache]: Analyzing trace with hash 261181638, now seen corresponding path program 83 times [2018-07-25 08:52:06,815 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:06,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:07,153 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 08:52:07,153 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:07,153 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2018-07-25 08:52:07,154 INFO L451 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-07-25 08:52:07,155 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-07-25 08:52:07,155 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:52:07,156 INFO L87 Difference]: Start difference. First operand 170 states and 170 transitions. Second operand 86 states. [2018-07-25 08:52:07,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:07,307 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2018-07-25 08:52:07,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-07-25 08:52:07,307 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 169 [2018-07-25 08:52:07,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:07,308 INFO L225 Difference]: With dead ends: 173 [2018-07-25 08:52:07,308 INFO L226 Difference]: Without dead ends: 172 [2018-07-25 08:52:07,309 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 08:52:07,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2018-07-25 08:52:07,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2018-07-25 08:52:07,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2018-07-25 08:52:07,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 172 transitions. [2018-07-25 08:52:07,314 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 172 transitions. Word has length 169 [2018-07-25 08:52:07,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:07,314 INFO L472 AbstractCegarLoop]: Abstraction has 172 states and 172 transitions. [2018-07-25 08:52:07,314 INFO L473 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-07-25 08:52:07,315 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 172 transitions. [2018-07-25 08:52:07,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-07-25 08:52:07,316 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:07,316 INFO L354 BasicCegarLoop]: trace histogram [85, 84, 1, 1] [2018-07-25 08:52:07,317 INFO L415 AbstractCegarLoop]: === Iteration 85 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:07,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1887452040, now seen corresponding path program 84 times [2018-07-25 08:52:07,317 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:07,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:07,725 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 08:52:07,725 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:07,726 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-07-25 08:52:07,726 INFO L451 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-07-25 08:52:07,729 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-07-25 08:52:07,731 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 08:52:07,731 INFO L87 Difference]: Start difference. First operand 172 states and 172 transitions. Second operand 87 states. [2018-07-25 08:52:07,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:07,926 INFO L93 Difference]: Finished difference Result 175 states and 175 transitions. [2018-07-25 08:52:07,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-07-25 08:52:07,926 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 171 [2018-07-25 08:52:07,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:07,928 INFO L225 Difference]: With dead ends: 175 [2018-07-25 08:52:07,928 INFO L226 Difference]: Without dead ends: 174 [2018-07-25 08:52:07,929 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 08:52:07,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2018-07-25 08:52:07,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2018-07-25 08:52:07,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-07-25 08:52:07,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 174 transitions. [2018-07-25 08:52:07,937 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 174 transitions. Word has length 171 [2018-07-25 08:52:07,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:07,938 INFO L472 AbstractCegarLoop]: Abstraction has 174 states and 174 transitions. [2018-07-25 08:52:07,938 INFO L473 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-07-25 08:52:07,938 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 174 transitions. [2018-07-25 08:52:07,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-07-25 08:52:07,941 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:07,941 INFO L354 BasicCegarLoop]: trace histogram [86, 85, 1, 1] [2018-07-25 08:52:07,942 INFO L415 AbstractCegarLoop]: === Iteration 86 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:07,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1365212618, now seen corresponding path program 85 times [2018-07-25 08:52:07,942 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:08,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:08,472 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 08:52:08,473 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:08,473 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2018-07-25 08:52:08,473 INFO L451 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-07-25 08:52:08,474 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-07-25 08:52:08,474 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:52:08,475 INFO L87 Difference]: Start difference. First operand 174 states and 174 transitions. Second operand 88 states. [2018-07-25 08:52:08,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:08,602 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-07-25 08:52:08,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-07-25 08:52:08,602 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 173 [2018-07-25 08:52:08,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:08,604 INFO L225 Difference]: With dead ends: 177 [2018-07-25 08:52:08,604 INFO L226 Difference]: Without dead ends: 176 [2018-07-25 08:52:08,605 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:52:08,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2018-07-25 08:52:08,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2018-07-25 08:52:08,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-07-25 08:52:08,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 176 transitions. [2018-07-25 08:52:08,610 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 176 transitions. Word has length 173 [2018-07-25 08:52:08,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:08,610 INFO L472 AbstractCegarLoop]: Abstraction has 176 states and 176 transitions. [2018-07-25 08:52:08,611 INFO L473 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-07-25 08:52:08,611 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 176 transitions. [2018-07-25 08:52:08,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-07-25 08:52:08,613 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:08,613 INFO L354 BasicCegarLoop]: trace histogram [87, 86, 1, 1] [2018-07-25 08:52:08,613 INFO L415 AbstractCegarLoop]: === Iteration 87 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:08,613 INFO L82 PathProgramCache]: Analyzing trace with hash 2004301708, now seen corresponding path program 86 times [2018-07-25 08:52:08,613 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:08,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:08,949 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 08:52:08,949 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:08,949 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-07-25 08:52:08,950 INFO L451 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-07-25 08:52:08,951 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-07-25 08:52:08,951 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 08:52:08,951 INFO L87 Difference]: Start difference. First operand 176 states and 176 transitions. Second operand 89 states. [2018-07-25 08:52:09,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:09,026 INFO L93 Difference]: Finished difference Result 179 states and 179 transitions. [2018-07-25 08:52:09,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-07-25 08:52:09,026 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 175 [2018-07-25 08:52:09,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:09,027 INFO L225 Difference]: With dead ends: 179 [2018-07-25 08:52:09,027 INFO L226 Difference]: Without dead ends: 178 [2018-07-25 08:52:09,028 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 08:52:09,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-07-25 08:52:09,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2018-07-25 08:52:09,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-07-25 08:52:09,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 178 transitions. [2018-07-25 08:52:09,033 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 178 transitions. Word has length 175 [2018-07-25 08:52:09,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:09,033 INFO L472 AbstractCegarLoop]: Abstraction has 178 states and 178 transitions. [2018-07-25 08:52:09,033 INFO L473 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-07-25 08:52:09,033 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 178 transitions. [2018-07-25 08:52:09,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-07-25 08:52:09,035 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:09,035 INFO L354 BasicCegarLoop]: trace histogram [88, 87, 1, 1] [2018-07-25 08:52:09,035 INFO L415 AbstractCegarLoop]: === Iteration 88 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:09,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1988593870, now seen corresponding path program 87 times [2018-07-25 08:52:09,036 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:09,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:09,382 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 08:52:09,382 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:09,382 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-07-25 08:52:09,383 INFO L451 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-07-25 08:52:09,384 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-07-25 08:52:09,384 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 08:52:09,384 INFO L87 Difference]: Start difference. First operand 178 states and 178 transitions. Second operand 90 states. [2018-07-25 08:52:09,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:09,511 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2018-07-25 08:52:09,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-07-25 08:52:09,511 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 177 [2018-07-25 08:52:09,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:09,512 INFO L225 Difference]: With dead ends: 181 [2018-07-25 08:52:09,512 INFO L226 Difference]: Without dead ends: 180 [2018-07-25 08:52:09,513 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 08:52:09,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2018-07-25 08:52:09,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2018-07-25 08:52:09,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2018-07-25 08:52:09,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 180 transitions. [2018-07-25 08:52:09,516 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 180 transitions. Word has length 177 [2018-07-25 08:52:09,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:09,517 INFO L472 AbstractCegarLoop]: Abstraction has 180 states and 180 transitions. [2018-07-25 08:52:09,517 INFO L473 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-07-25 08:52:09,517 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 180 transitions. [2018-07-25 08:52:09,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-07-25 08:52:09,519 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:09,519 INFO L354 BasicCegarLoop]: trace histogram [89, 88, 1, 1] [2018-07-25 08:52:09,519 INFO L415 AbstractCegarLoop]: === Iteration 89 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:09,519 INFO L82 PathProgramCache]: Analyzing trace with hash -221736560, now seen corresponding path program 88 times [2018-07-25 08:52:09,519 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:09,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:09,898 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 08:52:09,898 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:09,898 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-07-25 08:52:09,899 INFO L451 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-07-25 08:52:09,900 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-07-25 08:52:09,901 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 08:52:09,901 INFO L87 Difference]: Start difference. First operand 180 states and 180 transitions. Second operand 91 states. [2018-07-25 08:52:10,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:10,098 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2018-07-25 08:52:10,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-07-25 08:52:10,099 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 179 [2018-07-25 08:52:10,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:10,102 INFO L225 Difference]: With dead ends: 183 [2018-07-25 08:52:10,103 INFO L226 Difference]: Without dead ends: 182 [2018-07-25 08:52:10,105 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 08:52:10,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-07-25 08:52:10,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2018-07-25 08:52:10,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-07-25 08:52:10,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 182 transitions. [2018-07-25 08:52:10,109 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 182 transitions. Word has length 179 [2018-07-25 08:52:10,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:10,110 INFO L472 AbstractCegarLoop]: Abstraction has 182 states and 182 transitions. [2018-07-25 08:52:10,110 INFO L473 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-07-25 08:52:10,110 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 182 transitions. [2018-07-25 08:52:10,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-07-25 08:52:10,112 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:10,112 INFO L354 BasicCegarLoop]: trace histogram [90, 89, 1, 1] [2018-07-25 08:52:10,112 INFO L415 AbstractCegarLoop]: === Iteration 90 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:10,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1659531730, now seen corresponding path program 89 times [2018-07-25 08:52:10,112 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:10,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:10,494 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 08:52:10,495 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:10,495 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2018-07-25 08:52:10,495 INFO L451 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-07-25 08:52:10,496 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-07-25 08:52:10,497 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:52:10,497 INFO L87 Difference]: Start difference. First operand 182 states and 182 transitions. Second operand 92 states. [2018-07-25 08:52:10,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:10,583 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2018-07-25 08:52:10,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-07-25 08:52:10,583 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 181 [2018-07-25 08:52:10,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:10,585 INFO L225 Difference]: With dead ends: 185 [2018-07-25 08:52:10,585 INFO L226 Difference]: Without dead ends: 184 [2018-07-25 08:52:10,586 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 08:52:10,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-07-25 08:52:10,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2018-07-25 08:52:10,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-07-25 08:52:10,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 184 transitions. [2018-07-25 08:52:10,597 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 184 transitions. Word has length 181 [2018-07-25 08:52:10,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:10,598 INFO L472 AbstractCegarLoop]: Abstraction has 184 states and 184 transitions. [2018-07-25 08:52:10,598 INFO L473 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-07-25 08:52:10,598 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 184 transitions. [2018-07-25 08:52:10,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-07-25 08:52:10,600 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:10,600 INFO L354 BasicCegarLoop]: trace histogram [91, 90, 1, 1] [2018-07-25 08:52:10,600 INFO L415 AbstractCegarLoop]: === Iteration 91 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:10,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1377126804, now seen corresponding path program 90 times [2018-07-25 08:52:10,600 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:10,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:10,889 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 08:52:10,889 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:10,889 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-07-25 08:52:10,889 INFO L451 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-07-25 08:52:10,890 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-07-25 08:52:10,890 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 08:52:10,891 INFO L87 Difference]: Start difference. First operand 184 states and 184 transitions. Second operand 93 states. [2018-07-25 08:52:11,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:11,019 INFO L93 Difference]: Finished difference Result 187 states and 187 transitions. [2018-07-25 08:52:11,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-07-25 08:52:11,019 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 183 [2018-07-25 08:52:11,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:11,020 INFO L225 Difference]: With dead ends: 187 [2018-07-25 08:52:11,020 INFO L226 Difference]: Without dead ends: 186 [2018-07-25 08:52:11,021 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 08:52:11,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-07-25 08:52:11,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2018-07-25 08:52:11,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2018-07-25 08:52:11,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 186 transitions. [2018-07-25 08:52:11,026 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 186 transitions. Word has length 183 [2018-07-25 08:52:11,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:11,026 INFO L472 AbstractCegarLoop]: Abstraction has 186 states and 186 transitions. [2018-07-25 08:52:11,026 INFO L473 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-07-25 08:52:11,026 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 186 transitions. [2018-07-25 08:52:11,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-07-25 08:52:11,027 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:11,027 INFO L354 BasicCegarLoop]: trace histogram [92, 91, 1, 1] [2018-07-25 08:52:11,028 INFO L415 AbstractCegarLoop]: === Iteration 92 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:11,028 INFO L82 PathProgramCache]: Analyzing trace with hash 568932566, now seen corresponding path program 91 times [2018-07-25 08:52:11,028 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:11,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:11,365 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 08:52:11,365 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:11,365 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2018-07-25 08:52:11,366 INFO L451 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-07-25 08:52:11,367 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-07-25 08:52:11,367 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 08:52:11,367 INFO L87 Difference]: Start difference. First operand 186 states and 186 transitions. Second operand 94 states. [2018-07-25 08:52:11,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:11,458 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2018-07-25 08:52:11,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-07-25 08:52:11,459 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 185 [2018-07-25 08:52:11,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:11,460 INFO L225 Difference]: With dead ends: 189 [2018-07-25 08:52:11,460 INFO L226 Difference]: Without dead ends: 188 [2018-07-25 08:52:11,460 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 08:52:11,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-07-25 08:52:11,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2018-07-25 08:52:11,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2018-07-25 08:52:11,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 188 transitions. [2018-07-25 08:52:11,464 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 188 transitions. Word has length 185 [2018-07-25 08:52:11,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:11,465 INFO L472 AbstractCegarLoop]: Abstraction has 188 states and 188 transitions. [2018-07-25 08:52:11,465 INFO L473 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-07-25 08:52:11,465 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 188 transitions. [2018-07-25 08:52:11,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-07-25 08:52:11,466 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:11,466 INFO L354 BasicCegarLoop]: trace histogram [93, 92, 1, 1] [2018-07-25 08:52:11,466 INFO L415 AbstractCegarLoop]: === Iteration 93 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:11,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1283350424, now seen corresponding path program 92 times [2018-07-25 08:52:11,467 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:11,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:11,800 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 08:52:11,800 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:11,800 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-07-25 08:52:11,801 INFO L451 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-07-25 08:52:11,801 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-07-25 08:52:11,802 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 08:52:11,802 INFO L87 Difference]: Start difference. First operand 188 states and 188 transitions. Second operand 95 states. [2018-07-25 08:52:11,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:11,949 INFO L93 Difference]: Finished difference Result 191 states and 191 transitions. [2018-07-25 08:52:11,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-07-25 08:52:11,949 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 187 [2018-07-25 08:52:11,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:11,950 INFO L225 Difference]: With dead ends: 191 [2018-07-25 08:52:11,950 INFO L226 Difference]: Without dead ends: 190 [2018-07-25 08:52:11,951 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 08:52:11,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-07-25 08:52:11,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2018-07-25 08:52:11,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-07-25 08:52:11,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 190 transitions. [2018-07-25 08:52:11,956 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 190 transitions. Word has length 187 [2018-07-25 08:52:11,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:11,956 INFO L472 AbstractCegarLoop]: Abstraction has 190 states and 190 transitions. [2018-07-25 08:52:11,956 INFO L473 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-07-25 08:52:11,956 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 190 transitions. [2018-07-25 08:52:11,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-07-25 08:52:11,957 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:11,957 INFO L354 BasicCegarLoop]: trace histogram [94, 93, 1, 1] [2018-07-25 08:52:11,958 INFO L415 AbstractCegarLoop]: === Iteration 94 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:11,958 INFO L82 PathProgramCache]: Analyzing trace with hash 644144602, now seen corresponding path program 93 times [2018-07-25 08:52:11,958 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:12,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:12,250 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 08:52:12,250 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:12,250 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2018-07-25 08:52:12,250 INFO L451 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-07-25 08:52:12,251 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-07-25 08:52:12,252 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 08:52:12,252 INFO L87 Difference]: Start difference. First operand 190 states and 190 transitions. Second operand 96 states. [2018-07-25 08:52:12,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:12,422 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2018-07-25 08:52:12,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-07-25 08:52:12,423 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 189 [2018-07-25 08:52:12,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:12,424 INFO L225 Difference]: With dead ends: 193 [2018-07-25 08:52:12,424 INFO L226 Difference]: Without dead ends: 192 [2018-07-25 08:52:12,425 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 08:52:12,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-07-25 08:52:12,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2018-07-25 08:52:12,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-07-25 08:52:12,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 192 transitions. [2018-07-25 08:52:12,429 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 192 transitions. Word has length 189 [2018-07-25 08:52:12,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:12,430 INFO L472 AbstractCegarLoop]: Abstraction has 192 states and 192 transitions. [2018-07-25 08:52:12,430 INFO L473 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-07-25 08:52:12,430 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 192 transitions. [2018-07-25 08:52:12,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-07-25 08:52:12,431 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:12,431 INFO L354 BasicCegarLoop]: trace histogram [95, 94, 1, 1] [2018-07-25 08:52:12,431 INFO L415 AbstractCegarLoop]: === Iteration 95 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:12,432 INFO L82 PathProgramCache]: Analyzing trace with hash 547672988, now seen corresponding path program 94 times [2018-07-25 08:52:12,432 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:12,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:12,801 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 08:52:12,802 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:12,802 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-07-25 08:52:12,802 INFO L451 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-07-25 08:52:12,803 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-07-25 08:52:12,804 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 08:52:12,804 INFO L87 Difference]: Start difference. First operand 192 states and 192 transitions. Second operand 97 states. [2018-07-25 08:52:12,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:12,900 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-07-25 08:52:12,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-07-25 08:52:12,900 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 191 [2018-07-25 08:52:12,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:12,901 INFO L225 Difference]: With dead ends: 195 [2018-07-25 08:52:12,901 INFO L226 Difference]: Without dead ends: 194 [2018-07-25 08:52:12,902 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 08:52:12,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-07-25 08:52:12,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2018-07-25 08:52:12,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-07-25 08:52:12,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 194 transitions. [2018-07-25 08:52:12,906 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 194 transitions. Word has length 191 [2018-07-25 08:52:12,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:12,907 INFO L472 AbstractCegarLoop]: Abstraction has 194 states and 194 transitions. [2018-07-25 08:52:12,907 INFO L473 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-07-25 08:52:12,907 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 194 transitions. [2018-07-25 08:52:12,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-07-25 08:52:12,907 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:12,908 INFO L354 BasicCegarLoop]: trace histogram [96, 95, 1, 1] [2018-07-25 08:52:12,908 INFO L415 AbstractCegarLoop]: === Iteration 96 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:12,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1967234850, now seen corresponding path program 95 times [2018-07-25 08:52:12,908 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:12,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:13,214 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 08:52:13,214 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:13,214 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96] total 96 [2018-07-25 08:52:13,215 INFO L451 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-07-25 08:52:13,216 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-07-25 08:52:13,216 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:52:13,216 INFO L87 Difference]: Start difference. First operand 194 states and 194 transitions. Second operand 98 states. [2018-07-25 08:52:13,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:13,288 INFO L93 Difference]: Finished difference Result 197 states and 197 transitions. [2018-07-25 08:52:13,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-07-25 08:52:13,288 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 193 [2018-07-25 08:52:13,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:13,289 INFO L225 Difference]: With dead ends: 197 [2018-07-25 08:52:13,290 INFO L226 Difference]: Without dead ends: 196 [2018-07-25 08:52:13,291 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:52:13,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2018-07-25 08:52:13,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2018-07-25 08:52:13,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2018-07-25 08:52:13,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 196 transitions. [2018-07-25 08:52:13,297 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 196 transitions. Word has length 193 [2018-07-25 08:52:13,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:13,298 INFO L472 AbstractCegarLoop]: Abstraction has 196 states and 196 transitions. [2018-07-25 08:52:13,298 INFO L473 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-07-25 08:52:13,298 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 196 transitions. [2018-07-25 08:52:13,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-07-25 08:52:13,299 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:13,300 INFO L354 BasicCegarLoop]: trace histogram [97, 96, 1, 1] [2018-07-25 08:52:13,300 INFO L415 AbstractCegarLoop]: === Iteration 97 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:13,300 INFO L82 PathProgramCache]: Analyzing trace with hash -727079520, now seen corresponding path program 96 times [2018-07-25 08:52:13,300 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:13,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:13,806 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 08:52:13,807 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:13,807 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-07-25 08:52:13,807 INFO L451 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-07-25 08:52:13,808 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-07-25 08:52:13,808 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 08:52:13,808 INFO L87 Difference]: Start difference. First operand 196 states and 196 transitions. Second operand 99 states. [2018-07-25 08:52:13,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:13,895 INFO L93 Difference]: Finished difference Result 199 states and 199 transitions. [2018-07-25 08:52:13,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-07-25 08:52:13,896 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 195 [2018-07-25 08:52:13,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:13,897 INFO L225 Difference]: With dead ends: 199 [2018-07-25 08:52:13,897 INFO L226 Difference]: Without dead ends: 198 [2018-07-25 08:52:13,897 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 08:52:13,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-07-25 08:52:13,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2018-07-25 08:52:13,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-07-25 08:52:13,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 198 transitions. [2018-07-25 08:52:13,901 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 198 transitions. Word has length 195 [2018-07-25 08:52:13,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:13,901 INFO L472 AbstractCegarLoop]: Abstraction has 198 states and 198 transitions. [2018-07-25 08:52:13,901 INFO L473 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-07-25 08:52:13,902 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 198 transitions. [2018-07-25 08:52:13,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-07-25 08:52:13,902 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:13,902 INFO L354 BasicCegarLoop]: trace histogram [98, 97, 1, 1] [2018-07-25 08:52:13,903 INFO L415 AbstractCegarLoop]: === Iteration 98 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:13,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1356251618, now seen corresponding path program 97 times [2018-07-25 08:52:13,903 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:13,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:14,201 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 08:52:14,201 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:14,201 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98] total 98 [2018-07-25 08:52:14,201 INFO L451 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-07-25 08:52:14,202 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-07-25 08:52:14,203 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 08:52:14,203 INFO L87 Difference]: Start difference. First operand 198 states and 198 transitions. Second operand 100 states. [2018-07-25 08:52:14,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:14,284 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2018-07-25 08:52:14,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-07-25 08:52:14,284 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 197 [2018-07-25 08:52:14,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:14,285 INFO L225 Difference]: With dead ends: 201 [2018-07-25 08:52:14,285 INFO L226 Difference]: Without dead ends: 200 [2018-07-25 08:52:14,286 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 08:52:14,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2018-07-25 08:52:14,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2018-07-25 08:52:14,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2018-07-25 08:52:14,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 200 transitions. [2018-07-25 08:52:14,290 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 200 transitions. Word has length 197 [2018-07-25 08:52:14,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:14,290 INFO L472 AbstractCegarLoop]: Abstraction has 200 states and 200 transitions. [2018-07-25 08:52:14,290 INFO L473 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-07-25 08:52:14,290 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 200 transitions. [2018-07-25 08:52:14,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-07-25 08:52:14,291 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:14,291 INFO L354 BasicCegarLoop]: trace histogram [99, 98, 1, 1] [2018-07-25 08:52:14,291 INFO L415 AbstractCegarLoop]: === Iteration 99 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:14,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1982715300, now seen corresponding path program 98 times [2018-07-25 08:52:14,291 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:14,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:14,602 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 08:52:14,602 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:14,602 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-07-25 08:52:14,603 INFO L451 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-07-25 08:52:14,604 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-07-25 08:52:14,604 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 08:52:14,605 INFO L87 Difference]: Start difference. First operand 200 states and 200 transitions. Second operand 101 states. [2018-07-25 08:52:14,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:14,738 INFO L93 Difference]: Finished difference Result 203 states and 203 transitions. [2018-07-25 08:52:14,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-07-25 08:52:14,738 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 199 [2018-07-25 08:52:14,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:14,739 INFO L225 Difference]: With dead ends: 203 [2018-07-25 08:52:14,739 INFO L226 Difference]: Without dead ends: 202 [2018-07-25 08:52:14,740 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 08:52:14,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2018-07-25 08:52:14,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2018-07-25 08:52:14,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2018-07-25 08:52:14,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 202 transitions. [2018-07-25 08:52:14,745 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 202 transitions. Word has length 199 [2018-07-25 08:52:14,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:14,745 INFO L472 AbstractCegarLoop]: Abstraction has 202 states and 202 transitions. [2018-07-25 08:52:14,746 INFO L473 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-07-25 08:52:14,746 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 202 transitions. [2018-07-25 08:52:14,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-07-25 08:52:14,747 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:14,747 INFO L354 BasicCegarLoop]: trace histogram [100, 99, 1, 1] [2018-07-25 08:52:14,747 INFO L415 AbstractCegarLoop]: === Iteration 100 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:14,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1576075034, now seen corresponding path program 99 times [2018-07-25 08:52:14,747 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:14,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:15,123 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 08:52:15,124 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:15,124 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100] total 100 [2018-07-25 08:52:15,124 INFO L451 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-07-25 08:52:15,125 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-07-25 08:52:15,126 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 08:52:15,126 INFO L87 Difference]: Start difference. First operand 202 states and 202 transitions. Second operand 102 states. [2018-07-25 08:52:15,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:15,209 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2018-07-25 08:52:15,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-07-25 08:52:15,209 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 201 [2018-07-25 08:52:15,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:15,210 INFO L225 Difference]: With dead ends: 205 [2018-07-25 08:52:15,211 INFO L226 Difference]: Without dead ends: 204 [2018-07-25 08:52:15,211 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 08:52:15,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2018-07-25 08:52:15,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2018-07-25 08:52:15,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2018-07-25 08:52:15,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 204 transitions. [2018-07-25 08:52:15,217 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 204 transitions. Word has length 201 [2018-07-25 08:52:15,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:15,217 INFO L472 AbstractCegarLoop]: Abstraction has 204 states and 204 transitions. [2018-07-25 08:52:15,217 INFO L473 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-07-25 08:52:15,218 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 204 transitions. [2018-07-25 08:52:15,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-07-25 08:52:15,219 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:15,219 INFO L354 BasicCegarLoop]: trace histogram [101, 100, 1, 1] [2018-07-25 08:52:15,219 INFO L415 AbstractCegarLoop]: === Iteration 101 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:15,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1515348904, now seen corresponding path program 100 times [2018-07-25 08:52:15,219 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:15,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:15,586 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 08:52:15,586 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:15,586 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-07-25 08:52:15,586 INFO L451 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-07-25 08:52:15,587 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-07-25 08:52:15,588 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 08:52:15,588 INFO L87 Difference]: Start difference. First operand 204 states and 204 transitions. Second operand 103 states. [2018-07-25 08:52:15,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:15,738 INFO L93 Difference]: Finished difference Result 207 states and 207 transitions. [2018-07-25 08:52:15,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-07-25 08:52:15,738 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 203 [2018-07-25 08:52:15,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:15,739 INFO L225 Difference]: With dead ends: 207 [2018-07-25 08:52:15,739 INFO L226 Difference]: Without dead ends: 206 [2018-07-25 08:52:15,741 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 08:52:15,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2018-07-25 08:52:15,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2018-07-25 08:52:15,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2018-07-25 08:52:15,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 206 transitions. [2018-07-25 08:52:15,746 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 206 transitions. Word has length 203 [2018-07-25 08:52:15,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:15,746 INFO L472 AbstractCegarLoop]: Abstraction has 206 states and 206 transitions. [2018-07-25 08:52:15,747 INFO L473 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-07-25 08:52:15,747 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 206 transitions. [2018-07-25 08:52:15,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-07-25 08:52:15,748 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:15,748 INFO L354 BasicCegarLoop]: trace histogram [102, 101, 1, 1] [2018-07-25 08:52:15,748 INFO L415 AbstractCegarLoop]: === Iteration 102 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:15,749 INFO L82 PathProgramCache]: Analyzing trace with hash 256384490, now seen corresponding path program 101 times [2018-07-25 08:52:15,749 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:15,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:16,186 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 08:52:16,186 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:16,187 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102] total 102 [2018-07-25 08:52:16,187 INFO L451 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-07-25 08:52:16,188 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-07-25 08:52:16,189 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:52:16,189 INFO L87 Difference]: Start difference. First operand 206 states and 206 transitions. Second operand 104 states. [2018-07-25 08:52:16,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:16,359 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2018-07-25 08:52:16,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-07-25 08:52:16,360 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 205 [2018-07-25 08:52:16,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:16,361 INFO L225 Difference]: With dead ends: 209 [2018-07-25 08:52:16,361 INFO L226 Difference]: Without dead ends: 208 [2018-07-25 08:52:16,361 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 08:52:16,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-07-25 08:52:16,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2018-07-25 08:52:16,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2018-07-25 08:52:16,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 208 transitions. [2018-07-25 08:52:16,366 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 208 transitions. Word has length 205 [2018-07-25 08:52:16,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:16,366 INFO L472 AbstractCegarLoop]: Abstraction has 208 states and 208 transitions. [2018-07-25 08:52:16,366 INFO L473 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-07-25 08:52:16,366 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 208 transitions. [2018-07-25 08:52:16,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-07-25 08:52:16,367 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:16,367 INFO L354 BasicCegarLoop]: trace histogram [103, 102, 1, 1] [2018-07-25 08:52:16,367 INFO L415 AbstractCegarLoop]: === Iteration 103 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:16,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1572360108, now seen corresponding path program 102 times [2018-07-25 08:52:16,368 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:16,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:16,693 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 08:52:16,693 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:16,693 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-07-25 08:52:16,694 INFO L451 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-07-25 08:52:16,694 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-07-25 08:52:16,695 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 08:52:16,695 INFO L87 Difference]: Start difference. First operand 208 states and 208 transitions. Second operand 105 states. [2018-07-25 08:52:16,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:16,783 INFO L93 Difference]: Finished difference Result 211 states and 211 transitions. [2018-07-25 08:52:16,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-07-25 08:52:16,784 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 207 [2018-07-25 08:52:16,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:16,784 INFO L225 Difference]: With dead ends: 211 [2018-07-25 08:52:16,784 INFO L226 Difference]: Without dead ends: 210 [2018-07-25 08:52:16,785 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 08:52:16,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2018-07-25 08:52:16,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2018-07-25 08:52:16,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2018-07-25 08:52:16,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 210 transitions. [2018-07-25 08:52:16,790 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 210 transitions. Word has length 207 [2018-07-25 08:52:16,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:16,790 INFO L472 AbstractCegarLoop]: Abstraction has 210 states and 210 transitions. [2018-07-25 08:52:16,790 INFO L473 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-07-25 08:52:16,790 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 210 transitions. [2018-07-25 08:52:16,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-07-25 08:52:16,791 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:16,791 INFO L354 BasicCegarLoop]: trace histogram [104, 103, 1, 1] [2018-07-25 08:52:16,792 INFO L415 AbstractCegarLoop]: === Iteration 104 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:16,792 INFO L82 PathProgramCache]: Analyzing trace with hash -790423314, now seen corresponding path program 103 times [2018-07-25 08:52:16,792 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:16,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:17,111 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 08:52:17,112 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:17,112 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104] total 104 [2018-07-25 08:52:17,112 INFO L451 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-07-25 08:52:17,113 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-07-25 08:52:17,114 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 08:52:17,114 INFO L87 Difference]: Start difference. First operand 210 states and 210 transitions. Second operand 106 states. [2018-07-25 08:52:17,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:17,250 INFO L93 Difference]: Finished difference Result 213 states and 213 transitions. [2018-07-25 08:52:17,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-07-25 08:52:17,250 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 209 [2018-07-25 08:52:17,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:17,251 INFO L225 Difference]: With dead ends: 213 [2018-07-25 08:52:17,251 INFO L226 Difference]: Without dead ends: 212 [2018-07-25 08:52:17,252 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 08:52:17,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2018-07-25 08:52:17,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2018-07-25 08:52:17,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2018-07-25 08:52:17,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 212 transitions. [2018-07-25 08:52:17,257 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 212 transitions. Word has length 209 [2018-07-25 08:52:17,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:17,257 INFO L472 AbstractCegarLoop]: Abstraction has 212 states and 212 transitions. [2018-07-25 08:52:17,257 INFO L473 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-07-25 08:52:17,257 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 212 transitions. [2018-07-25 08:52:17,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-07-25 08:52:17,258 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:17,258 INFO L354 BasicCegarLoop]: trace histogram [105, 104, 1, 1] [2018-07-25 08:52:17,259 INFO L415 AbstractCegarLoop]: === Iteration 105 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:17,259 INFO L82 PathProgramCache]: Analyzing trace with hash 612407728, now seen corresponding path program 104 times [2018-07-25 08:52:17,259 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:17,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:17,575 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 08:52:17,575 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:17,575 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2018-07-25 08:52:17,576 INFO L451 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-07-25 08:52:17,577 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-07-25 08:52:17,578 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 08:52:17,578 INFO L87 Difference]: Start difference. First operand 212 states and 212 transitions. Second operand 107 states. [2018-07-25 08:52:17,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:17,757 INFO L93 Difference]: Finished difference Result 215 states and 215 transitions. [2018-07-25 08:52:17,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-07-25 08:52:17,757 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 211 [2018-07-25 08:52:17,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:17,758 INFO L225 Difference]: With dead ends: 215 [2018-07-25 08:52:17,758 INFO L226 Difference]: Without dead ends: 214 [2018-07-25 08:52:17,759 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 08:52:17,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2018-07-25 08:52:17,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2018-07-25 08:52:17,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-07-25 08:52:17,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 214 transitions. [2018-07-25 08:52:17,763 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 214 transitions. Word has length 211 [2018-07-25 08:52:17,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:17,764 INFO L472 AbstractCegarLoop]: Abstraction has 214 states and 214 transitions. [2018-07-25 08:52:17,764 INFO L473 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-07-25 08:52:17,764 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 214 transitions. [2018-07-25 08:52:17,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-07-25 08:52:17,765 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:17,765 INFO L354 BasicCegarLoop]: trace histogram [106, 105, 1, 1] [2018-07-25 08:52:17,765 INFO L415 AbstractCegarLoop]: === Iteration 106 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:17,765 INFO L82 PathProgramCache]: Analyzing trace with hash 113308146, now seen corresponding path program 105 times [2018-07-25 08:52:17,765 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:17,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:18,095 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 08:52:18,096 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:18,096 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106] total 106 [2018-07-25 08:52:18,096 INFO L451 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-07-25 08:52:18,097 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-07-25 08:52:18,098 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 08:52:18,098 INFO L87 Difference]: Start difference. First operand 214 states and 214 transitions. Second operand 108 states. [2018-07-25 08:52:18,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:18,238 INFO L93 Difference]: Finished difference Result 217 states and 217 transitions. [2018-07-25 08:52:18,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-07-25 08:52:18,239 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 213 [2018-07-25 08:52:18,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:18,239 INFO L225 Difference]: With dead ends: 217 [2018-07-25 08:52:18,239 INFO L226 Difference]: Without dead ends: 216 [2018-07-25 08:52:18,241 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 08:52:18,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2018-07-25 08:52:18,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2018-07-25 08:52:18,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2018-07-25 08:52:18,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 216 transitions. [2018-07-25 08:52:18,247 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 216 transitions. Word has length 213 [2018-07-25 08:52:18,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:18,247 INFO L472 AbstractCegarLoop]: Abstraction has 216 states and 216 transitions. [2018-07-25 08:52:18,247 INFO L473 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-07-25 08:52:18,248 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 216 transitions. [2018-07-25 08:52:18,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-07-25 08:52:18,249 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:18,249 INFO L354 BasicCegarLoop]: trace histogram [107, 106, 1, 1] [2018-07-25 08:52:18,249 INFO L415 AbstractCegarLoop]: === Iteration 107 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:18,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1514946996, now seen corresponding path program 106 times [2018-07-25 08:52:18,250 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:18,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:18,683 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 08:52:18,683 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:18,683 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2018-07-25 08:52:18,683 INFO L451 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-07-25 08:52:18,684 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-07-25 08:52:18,684 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 08:52:18,684 INFO L87 Difference]: Start difference. First operand 216 states and 216 transitions. Second operand 109 states. [2018-07-25 08:52:18,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:18,767 INFO L93 Difference]: Finished difference Result 219 states and 219 transitions. [2018-07-25 08:52:18,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-07-25 08:52:18,767 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 215 [2018-07-25 08:52:18,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:18,767 INFO L225 Difference]: With dead ends: 219 [2018-07-25 08:52:18,768 INFO L226 Difference]: Without dead ends: 218 [2018-07-25 08:52:18,768 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 08:52:18,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-07-25 08:52:18,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2018-07-25 08:52:18,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2018-07-25 08:52:18,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 218 transitions. [2018-07-25 08:52:18,773 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 218 transitions. Word has length 215 [2018-07-25 08:52:18,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:18,773 INFO L472 AbstractCegarLoop]: Abstraction has 218 states and 218 transitions. [2018-07-25 08:52:18,774 INFO L473 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-07-25 08:52:18,774 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 218 transitions. [2018-07-25 08:52:18,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-07-25 08:52:18,775 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:18,775 INFO L354 BasicCegarLoop]: trace histogram [108, 107, 1, 1] [2018-07-25 08:52:18,775 INFO L415 AbstractCegarLoop]: === Iteration 108 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:18,775 INFO L82 PathProgramCache]: Analyzing trace with hash -129849098, now seen corresponding path program 107 times [2018-07-25 08:52:18,775 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:18,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:19,151 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 08:52:19,151 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:19,151 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108] total 108 [2018-07-25 08:52:19,152 INFO L451 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-07-25 08:52:19,153 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-07-25 08:52:19,153 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 08:52:19,153 INFO L87 Difference]: Start difference. First operand 218 states and 218 transitions. Second operand 110 states. [2018-07-25 08:52:19,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:19,374 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2018-07-25 08:52:19,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-07-25 08:52:19,375 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 217 [2018-07-25 08:52:19,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:19,375 INFO L225 Difference]: With dead ends: 221 [2018-07-25 08:52:19,375 INFO L226 Difference]: Without dead ends: 220 [2018-07-25 08:52:19,377 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 08:52:19,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2018-07-25 08:52:19,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2018-07-25 08:52:19,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2018-07-25 08:52:19,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 220 transitions. [2018-07-25 08:52:19,381 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 220 transitions. Word has length 217 [2018-07-25 08:52:19,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:19,382 INFO L472 AbstractCegarLoop]: Abstraction has 220 states and 220 transitions. [2018-07-25 08:52:19,382 INFO L473 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-07-25 08:52:19,382 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 220 transitions. [2018-07-25 08:52:19,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-07-25 08:52:19,383 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:19,383 INFO L354 BasicCegarLoop]: trace histogram [109, 108, 1, 1] [2018-07-25 08:52:19,383 INFO L415 AbstractCegarLoop]: === Iteration 109 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:19,383 INFO L82 PathProgramCache]: Analyzing trace with hash -230930504, now seen corresponding path program 108 times [2018-07-25 08:52:19,384 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:19,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:19,724 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 08:52:19,725 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:19,725 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2018-07-25 08:52:19,725 INFO L451 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-07-25 08:52:19,727 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-07-25 08:52:19,728 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 08:52:19,728 INFO L87 Difference]: Start difference. First operand 220 states and 220 transitions. Second operand 111 states. [2018-07-25 08:52:19,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:19,902 INFO L93 Difference]: Finished difference Result 223 states and 223 transitions. [2018-07-25 08:52:19,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-07-25 08:52:19,902 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 219 [2018-07-25 08:52:19,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:19,903 INFO L225 Difference]: With dead ends: 223 [2018-07-25 08:52:19,903 INFO L226 Difference]: Without dead ends: 222 [2018-07-25 08:52:19,904 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 08:52:19,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-07-25 08:52:19,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2018-07-25 08:52:19,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2018-07-25 08:52:19,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 222 transitions. [2018-07-25 08:52:19,908 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 222 transitions. Word has length 219 [2018-07-25 08:52:19,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:19,909 INFO L472 AbstractCegarLoop]: Abstraction has 222 states and 222 transitions. [2018-07-25 08:52:19,909 INFO L473 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-07-25 08:52:19,909 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 222 transitions. [2018-07-25 08:52:19,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-07-25 08:52:19,910 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:19,910 INFO L354 BasicCegarLoop]: trace histogram [110, 109, 1, 1] [2018-07-25 08:52:19,910 INFO L415 AbstractCegarLoop]: === Iteration 110 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:19,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1414086138, now seen corresponding path program 109 times [2018-07-25 08:52:19,910 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:19,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:20,303 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 08:52:20,303 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:20,303 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110] total 110 [2018-07-25 08:52:20,303 INFO L451 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-07-25 08:52:20,305 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-07-25 08:52:20,305 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 08:52:20,306 INFO L87 Difference]: Start difference. First operand 222 states and 222 transitions. Second operand 112 states. [2018-07-25 08:52:20,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:20,462 INFO L93 Difference]: Finished difference Result 225 states and 225 transitions. [2018-07-25 08:52:20,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-07-25 08:52:20,462 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 221 [2018-07-25 08:52:20,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:20,463 INFO L225 Difference]: With dead ends: 225 [2018-07-25 08:52:20,463 INFO L226 Difference]: Without dead ends: 224 [2018-07-25 08:52:20,464 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 08:52:20,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2018-07-25 08:52:20,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2018-07-25 08:52:20,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2018-07-25 08:52:20,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 224 transitions. [2018-07-25 08:52:20,467 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 224 transitions. Word has length 221 [2018-07-25 08:52:20,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:20,467 INFO L472 AbstractCegarLoop]: Abstraction has 224 states and 224 transitions. [2018-07-25 08:52:20,467 INFO L473 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-07-25 08:52:20,468 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 224 transitions. [2018-07-25 08:52:20,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-07-25 08:52:20,468 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:20,468 INFO L354 BasicCegarLoop]: trace histogram [111, 110, 1, 1] [2018-07-25 08:52:20,468 INFO L415 AbstractCegarLoop]: === Iteration 111 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:20,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1727114172, now seen corresponding path program 110 times [2018-07-25 08:52:20,469 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:20,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:20,827 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 08:52:20,827 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:20,827 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111] total 111 [2018-07-25 08:52:20,827 INFO L451 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-07-25 08:52:20,828 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-07-25 08:52:20,829 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 08:52:20,829 INFO L87 Difference]: Start difference. First operand 224 states and 224 transitions. Second operand 113 states. [2018-07-25 08:52:21,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:21,082 INFO L93 Difference]: Finished difference Result 227 states and 227 transitions. [2018-07-25 08:52:21,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-07-25 08:52:21,082 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 223 [2018-07-25 08:52:21,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:21,083 INFO L225 Difference]: With dead ends: 227 [2018-07-25 08:52:21,084 INFO L226 Difference]: Without dead ends: 226 [2018-07-25 08:52:21,085 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 08:52:21,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-07-25 08:52:21,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2018-07-25 08:52:21,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2018-07-25 08:52:21,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 226 transitions. [2018-07-25 08:52:21,090 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 226 transitions. Word has length 223 [2018-07-25 08:52:21,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:21,090 INFO L472 AbstractCegarLoop]: Abstraction has 226 states and 226 transitions. [2018-07-25 08:52:21,091 INFO L473 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-07-25 08:52:21,091 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 226 transitions. [2018-07-25 08:52:21,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-07-25 08:52:21,092 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:21,092 INFO L354 BasicCegarLoop]: trace histogram [112, 111, 1, 1] [2018-07-25 08:52:21,092 INFO L415 AbstractCegarLoop]: === Iteration 112 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:21,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1899344126, now seen corresponding path program 111 times [2018-07-25 08:52:21,093 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:21,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:21,631 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 08:52:21,632 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:21,632 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112] total 112 [2018-07-25 08:52:21,632 INFO L451 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-07-25 08:52:21,633 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-07-25 08:52:21,633 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 08:52:21,634 INFO L87 Difference]: Start difference. First operand 226 states and 226 transitions. Second operand 114 states. [2018-07-25 08:52:21,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:21,815 INFO L93 Difference]: Finished difference Result 229 states and 229 transitions. [2018-07-25 08:52:21,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-07-25 08:52:21,815 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 225 [2018-07-25 08:52:21,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:21,815 INFO L225 Difference]: With dead ends: 229 [2018-07-25 08:52:21,816 INFO L226 Difference]: Without dead ends: 228 [2018-07-25 08:52:21,816 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 08:52:21,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-07-25 08:52:21,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2018-07-25 08:52:21,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2018-07-25 08:52:21,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 228 transitions. [2018-07-25 08:52:21,820 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 228 transitions. Word has length 225 [2018-07-25 08:52:21,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:21,821 INFO L472 AbstractCegarLoop]: Abstraction has 228 states and 228 transitions. [2018-07-25 08:52:21,821 INFO L473 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-07-25 08:52:21,821 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 228 transitions. [2018-07-25 08:52:21,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-07-25 08:52:21,822 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:21,822 INFO L354 BasicCegarLoop]: trace histogram [113, 112, 1, 1] [2018-07-25 08:52:21,822 INFO L415 AbstractCegarLoop]: === Iteration 113 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:21,822 INFO L82 PathProgramCache]: Analyzing trace with hash -91394624, now seen corresponding path program 112 times [2018-07-25 08:52:21,823 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:21,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:22,197 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 08:52:22,197 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:22,198 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113] total 113 [2018-07-25 08:52:22,198 INFO L451 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-07-25 08:52:22,199 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-07-25 08:52:22,199 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 08:52:22,199 INFO L87 Difference]: Start difference. First operand 228 states and 228 transitions. Second operand 115 states. [2018-07-25 08:52:22,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:22,351 INFO L93 Difference]: Finished difference Result 231 states and 231 transitions. [2018-07-25 08:52:22,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-07-25 08:52:22,351 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 227 [2018-07-25 08:52:22,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:22,352 INFO L225 Difference]: With dead ends: 231 [2018-07-25 08:52:22,352 INFO L226 Difference]: Without dead ends: 230 [2018-07-25 08:52:22,354 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 08:52:22,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2018-07-25 08:52:22,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2018-07-25 08:52:22,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2018-07-25 08:52:22,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 230 transitions. [2018-07-25 08:52:22,358 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 230 transitions. Word has length 227 [2018-07-25 08:52:22,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:22,358 INFO L472 AbstractCegarLoop]: Abstraction has 230 states and 230 transitions. [2018-07-25 08:52:22,358 INFO L473 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-07-25 08:52:22,358 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 230 transitions. [2018-07-25 08:52:22,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-07-25 08:52:22,359 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:22,360 INFO L354 BasicCegarLoop]: trace histogram [114, 113, 1, 1] [2018-07-25 08:52:22,360 INFO L415 AbstractCegarLoop]: === Iteration 114 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:22,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1930886654, now seen corresponding path program 113 times [2018-07-25 08:52:22,360 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:22,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:22,723 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 08:52:22,723 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:22,724 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114] total 114 [2018-07-25 08:52:22,724 INFO L451 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-07-25 08:52:22,725 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-07-25 08:52:22,725 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 08:52:22,725 INFO L87 Difference]: Start difference. First operand 230 states and 230 transitions. Second operand 116 states. [2018-07-25 08:52:22,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:22,888 INFO L93 Difference]: Finished difference Result 233 states and 233 transitions. [2018-07-25 08:52:22,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-07-25 08:52:22,889 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 229 [2018-07-25 08:52:22,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:22,889 INFO L225 Difference]: With dead ends: 233 [2018-07-25 08:52:22,890 INFO L226 Difference]: Without dead ends: 232 [2018-07-25 08:52:22,891 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 08:52:22,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2018-07-25 08:52:22,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2018-07-25 08:52:22,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2018-07-25 08:52:22,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 232 transitions. [2018-07-25 08:52:22,895 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 232 transitions. Word has length 229 [2018-07-25 08:52:22,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:22,896 INFO L472 AbstractCegarLoop]: Abstraction has 232 states and 232 transitions. [2018-07-25 08:52:22,896 INFO L473 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-07-25 08:52:22,896 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 232 transitions. [2018-07-25 08:52:22,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-07-25 08:52:22,897 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:22,897 INFO L354 BasicCegarLoop]: trace histogram [115, 114, 1, 1] [2018-07-25 08:52:22,897 INFO L415 AbstractCegarLoop]: === Iteration 115 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:22,897 INFO L82 PathProgramCache]: Analyzing trace with hash -156201532, now seen corresponding path program 114 times [2018-07-25 08:52:22,897 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:22,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:23,294 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 08:52:23,294 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:23,294 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115] total 115 [2018-07-25 08:52:23,294 INFO L451 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-07-25 08:52:23,295 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-07-25 08:52:23,296 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 08:52:23,296 INFO L87 Difference]: Start difference. First operand 232 states and 232 transitions. Second operand 117 states. [2018-07-25 08:52:23,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:23,501 INFO L93 Difference]: Finished difference Result 235 states and 235 transitions. [2018-07-25 08:52:23,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-07-25 08:52:23,502 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 231 [2018-07-25 08:52:23,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:23,502 INFO L225 Difference]: With dead ends: 235 [2018-07-25 08:52:23,502 INFO L226 Difference]: Without dead ends: 234 [2018-07-25 08:52:23,503 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 08:52:23,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-07-25 08:52:23,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2018-07-25 08:52:23,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2018-07-25 08:52:23,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 234 transitions. [2018-07-25 08:52:23,508 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 234 transitions. Word has length 231 [2018-07-25 08:52:23,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:23,508 INFO L472 AbstractCegarLoop]: Abstraction has 234 states and 234 transitions. [2018-07-25 08:52:23,508 INFO L473 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-07-25 08:52:23,508 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 234 transitions. [2018-07-25 08:52:23,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-07-25 08:52:23,509 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:23,509 INFO L354 BasicCegarLoop]: trace histogram [116, 115, 1, 1] [2018-07-25 08:52:23,509 INFO L415 AbstractCegarLoop]: === Iteration 116 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:23,510 INFO L82 PathProgramCache]: Analyzing trace with hash 214184198, now seen corresponding path program 115 times [2018-07-25 08:52:23,510 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:23,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:24,060 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 08:52:24,060 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:24,061 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116] total 116 [2018-07-25 08:52:24,061 INFO L451 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-07-25 08:52:24,061 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-07-25 08:52:24,062 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 08:52:24,062 INFO L87 Difference]: Start difference. First operand 234 states and 234 transitions. Second operand 118 states. [2018-07-25 08:52:24,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:24,302 INFO L93 Difference]: Finished difference Result 237 states and 237 transitions. [2018-07-25 08:52:24,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-07-25 08:52:24,302 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 233 [2018-07-25 08:52:24,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:24,302 INFO L225 Difference]: With dead ends: 237 [2018-07-25 08:52:24,303 INFO L226 Difference]: Without dead ends: 236 [2018-07-25 08:52:24,303 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 08:52:24,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2018-07-25 08:52:24,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2018-07-25 08:52:24,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2018-07-25 08:52:24,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 236 transitions. [2018-07-25 08:52:24,306 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 236 transitions. Word has length 233 [2018-07-25 08:52:24,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:24,306 INFO L472 AbstractCegarLoop]: Abstraction has 236 states and 236 transitions. [2018-07-25 08:52:24,307 INFO L473 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-07-25 08:52:24,307 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 236 transitions. [2018-07-25 08:52:24,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-07-25 08:52:24,307 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:24,307 INFO L354 BasicCegarLoop]: trace histogram [117, 116, 1, 1] [2018-07-25 08:52:24,307 INFO L415 AbstractCegarLoop]: === Iteration 117 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:24,308 INFO L82 PathProgramCache]: Analyzing trace with hash -327414840, now seen corresponding path program 116 times [2018-07-25 08:52:24,308 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:24,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:24,681 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 08:52:24,682 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:24,682 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117] total 117 [2018-07-25 08:52:24,682 INFO L451 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-07-25 08:52:24,683 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-07-25 08:52:24,684 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 08:52:24,684 INFO L87 Difference]: Start difference. First operand 236 states and 236 transitions. Second operand 119 states. [2018-07-25 08:52:24,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:24,787 INFO L93 Difference]: Finished difference Result 239 states and 239 transitions. [2018-07-25 08:52:24,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-07-25 08:52:24,787 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 235 [2018-07-25 08:52:24,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:24,787 INFO L225 Difference]: With dead ends: 239 [2018-07-25 08:52:24,787 INFO L226 Difference]: Without dead ends: 238 [2018-07-25 08:52:24,788 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 08:52:24,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2018-07-25 08:52:24,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2018-07-25 08:52:24,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2018-07-25 08:52:24,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 238 transitions. [2018-07-25 08:52:24,791 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 238 transitions. Word has length 235 [2018-07-25 08:52:24,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:24,791 INFO L472 AbstractCegarLoop]: Abstraction has 238 states and 238 transitions. [2018-07-25 08:52:24,792 INFO L473 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-07-25 08:52:24,792 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 238 transitions. [2018-07-25 08:52:24,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-07-25 08:52:24,792 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:24,792 INFO L354 BasicCegarLoop]: trace histogram [118, 117, 1, 1] [2018-07-25 08:52:24,793 INFO L415 AbstractCegarLoop]: === Iteration 118 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:24,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1113047542, now seen corresponding path program 117 times [2018-07-25 08:52:24,793 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:24,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:25,252 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 08:52:25,253 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:25,253 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118] total 118 [2018-07-25 08:52:25,253 INFO L451 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-07-25 08:52:25,254 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-07-25 08:52:25,255 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 08:52:25,255 INFO L87 Difference]: Start difference. First operand 238 states and 238 transitions. Second operand 120 states. [2018-07-25 08:52:25,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:25,438 INFO L93 Difference]: Finished difference Result 241 states and 241 transitions. [2018-07-25 08:52:25,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-07-25 08:52:25,438 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 237 [2018-07-25 08:52:25,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:25,439 INFO L225 Difference]: With dead ends: 241 [2018-07-25 08:52:25,439 INFO L226 Difference]: Without dead ends: 240 [2018-07-25 08:52:25,440 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 08:52:25,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2018-07-25 08:52:25,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2018-07-25 08:52:25,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2018-07-25 08:52:25,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 240 transitions. [2018-07-25 08:52:25,444 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 240 transitions. Word has length 237 [2018-07-25 08:52:25,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:25,444 INFO L472 AbstractCegarLoop]: Abstraction has 240 states and 240 transitions. [2018-07-25 08:52:25,445 INFO L473 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-07-25 08:52:25,445 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 240 transitions. [2018-07-25 08:52:25,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2018-07-25 08:52:25,446 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:25,446 INFO L354 BasicCegarLoop]: trace histogram [119, 118, 1, 1] [2018-07-25 08:52:25,446 INFO L415 AbstractCegarLoop]: === Iteration 119 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:25,446 INFO L82 PathProgramCache]: Analyzing trace with hash -191830068, now seen corresponding path program 118 times [2018-07-25 08:52:25,446 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:25,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:25,845 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 08:52:25,845 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:25,845 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119] total 119 [2018-07-25 08:52:25,846 INFO L451 AbstractCegarLoop]: Interpolant automaton has 121 states [2018-07-25 08:52:25,847 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2018-07-25 08:52:25,847 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2018-07-25 08:52:25,847 INFO L87 Difference]: Start difference. First operand 240 states and 240 transitions. Second operand 121 states. [2018-07-25 08:52:26,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:26,110 INFO L93 Difference]: Finished difference Result 243 states and 243 transitions. [2018-07-25 08:52:26,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-07-25 08:52:26,110 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 239 [2018-07-25 08:52:26,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:26,111 INFO L225 Difference]: With dead ends: 243 [2018-07-25 08:52:26,111 INFO L226 Difference]: Without dead ends: 242 [2018-07-25 08:52:26,113 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2018-07-25 08:52:26,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2018-07-25 08:52:26,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2018-07-25 08:52:26,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2018-07-25 08:52:26,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 242 transitions. [2018-07-25 08:52:26,116 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 242 transitions. Word has length 239 [2018-07-25 08:52:26,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:26,116 INFO L472 AbstractCegarLoop]: Abstraction has 242 states and 242 transitions. [2018-07-25 08:52:26,116 INFO L473 AbstractCegarLoop]: Interpolant automaton has 121 states. [2018-07-25 08:52:26,116 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 242 transitions. [2018-07-25 08:52:26,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-07-25 08:52:26,117 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:26,117 INFO L354 BasicCegarLoop]: trace histogram [120, 119, 1, 1] [2018-07-25 08:52:26,117 INFO L415 AbstractCegarLoop]: === Iteration 120 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:26,117 INFO L82 PathProgramCache]: Analyzing trace with hash 334899470, now seen corresponding path program 119 times [2018-07-25 08:52:26,117 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:26,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:26,520 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 08:52:26,520 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:26,521 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120] total 120 [2018-07-25 08:52:26,521 INFO L451 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-07-25 08:52:26,522 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-07-25 08:52:26,522 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 08:52:26,523 INFO L87 Difference]: Start difference. First operand 242 states and 242 transitions. Second operand 122 states. [2018-07-25 08:52:26,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:26,737 INFO L93 Difference]: Finished difference Result 245 states and 245 transitions. [2018-07-25 08:52:26,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-07-25 08:52:26,737 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 241 [2018-07-25 08:52:26,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:26,738 INFO L225 Difference]: With dead ends: 245 [2018-07-25 08:52:26,738 INFO L226 Difference]: Without dead ends: 244 [2018-07-25 08:52:26,739 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 08:52:26,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2018-07-25 08:52:26,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2018-07-25 08:52:26,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2018-07-25 08:52:26,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 244 transitions. [2018-07-25 08:52:26,742 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 244 transitions. Word has length 241 [2018-07-25 08:52:26,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:26,743 INFO L472 AbstractCegarLoop]: Abstraction has 244 states and 244 transitions. [2018-07-25 08:52:26,743 INFO L473 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-07-25 08:52:26,743 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 244 transitions. [2018-07-25 08:52:26,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-07-25 08:52:26,744 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:26,744 INFO L354 BasicCegarLoop]: trace histogram [121, 120, 1, 1] [2018-07-25 08:52:26,744 INFO L415 AbstractCegarLoop]: === Iteration 121 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:26,744 INFO L82 PathProgramCache]: Analyzing trace with hash -284155440, now seen corresponding path program 120 times [2018-07-25 08:52:26,744 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:26,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:27,190 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 08:52:27,191 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:27,191 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121] total 121 [2018-07-25 08:52:27,191 INFO L451 AbstractCegarLoop]: Interpolant automaton has 123 states [2018-07-25 08:52:27,192 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2018-07-25 08:52:27,193 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2018-07-25 08:52:27,193 INFO L87 Difference]: Start difference. First operand 244 states and 244 transitions. Second operand 123 states. [2018-07-25 08:52:27,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:27,310 INFO L93 Difference]: Finished difference Result 247 states and 247 transitions. [2018-07-25 08:52:27,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-07-25 08:52:27,310 INFO L78 Accepts]: Start accepts. Automaton has 123 states. Word has length 243 [2018-07-25 08:52:27,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:27,311 INFO L225 Difference]: With dead ends: 247 [2018-07-25 08:52:27,311 INFO L226 Difference]: Without dead ends: 246 [2018-07-25 08:52:27,312 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2018-07-25 08:52:27,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2018-07-25 08:52:27,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2018-07-25 08:52:27,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2018-07-25 08:52:27,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 246 transitions. [2018-07-25 08:52:27,315 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 246 transitions. Word has length 243 [2018-07-25 08:52:27,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:27,316 INFO L472 AbstractCegarLoop]: Abstraction has 246 states and 246 transitions. [2018-07-25 08:52:27,316 INFO L473 AbstractCegarLoop]: Interpolant automaton has 123 states. [2018-07-25 08:52:27,316 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 246 transitions. [2018-07-25 08:52:27,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2018-07-25 08:52:27,317 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:27,317 INFO L354 BasicCegarLoop]: trace histogram [122, 121, 1, 1] [2018-07-25 08:52:27,317 INFO L415 AbstractCegarLoop]: === Iteration 122 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:27,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1804530194, now seen corresponding path program 121 times [2018-07-25 08:52:27,318 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:27,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:27,730 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 08:52:27,731 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:27,731 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [122] total 122 [2018-07-25 08:52:27,731 INFO L451 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-07-25 08:52:27,732 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-07-25 08:52:27,733 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 08:52:27,733 INFO L87 Difference]: Start difference. First operand 246 states and 246 transitions. Second operand 124 states. [2018-07-25 08:52:28,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:28,030 INFO L93 Difference]: Finished difference Result 249 states and 249 transitions. [2018-07-25 08:52:28,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-07-25 08:52:28,031 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 245 [2018-07-25 08:52:28,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:28,031 INFO L225 Difference]: With dead ends: 249 [2018-07-25 08:52:28,031 INFO L226 Difference]: Without dead ends: 248 [2018-07-25 08:52:28,033 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 08:52:28,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-07-25 08:52:28,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2018-07-25 08:52:28,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2018-07-25 08:52:28,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 248 transitions. [2018-07-25 08:52:28,038 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 248 transitions. Word has length 245 [2018-07-25 08:52:28,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:28,038 INFO L472 AbstractCegarLoop]: Abstraction has 248 states and 248 transitions. [2018-07-25 08:52:28,038 INFO L473 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-07-25 08:52:28,039 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 248 transitions. [2018-07-25 08:52:28,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-07-25 08:52:28,040 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:28,040 INFO L354 BasicCegarLoop]: trace histogram [123, 122, 1, 1] [2018-07-25 08:52:28,040 INFO L415 AbstractCegarLoop]: === Iteration 123 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:28,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1013270060, now seen corresponding path program 122 times [2018-07-25 08:52:28,040 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:28,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:28,470 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 08:52:28,470 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:28,470 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123] total 123 [2018-07-25 08:52:28,470 INFO L451 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-07-25 08:52:28,472 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-07-25 08:52:28,472 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2018-07-25 08:52:28,472 INFO L87 Difference]: Start difference. First operand 248 states and 248 transitions. Second operand 125 states. [2018-07-25 08:52:28,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:28,709 INFO L93 Difference]: Finished difference Result 251 states and 251 transitions. [2018-07-25 08:52:28,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-07-25 08:52:28,710 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 247 [2018-07-25 08:52:28,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:28,711 INFO L225 Difference]: With dead ends: 251 [2018-07-25 08:52:28,711 INFO L226 Difference]: Without dead ends: 250 [2018-07-25 08:52:28,712 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2018-07-25 08:52:28,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2018-07-25 08:52:28,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2018-07-25 08:52:28,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2018-07-25 08:52:28,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 250 transitions. [2018-07-25 08:52:28,717 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 250 transitions. Word has length 247 [2018-07-25 08:52:28,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:28,717 INFO L472 AbstractCegarLoop]: Abstraction has 250 states and 250 transitions. [2018-07-25 08:52:28,717 INFO L473 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-07-25 08:52:28,717 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 250 transitions. [2018-07-25 08:52:28,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-07-25 08:52:28,718 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:28,719 INFO L354 BasicCegarLoop]: trace histogram [124, 123, 1, 1] [2018-07-25 08:52:28,719 INFO L415 AbstractCegarLoop]: === Iteration 124 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:28,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1205049622, now seen corresponding path program 123 times [2018-07-25 08:52:28,719 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:28,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:29,220 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 08:52:29,220 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:29,220 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [124] total 124 [2018-07-25 08:52:29,220 INFO L451 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-07-25 08:52:29,222 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-07-25 08:52:29,223 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7875, Invalid=7875, Unknown=0, NotChecked=0, Total=15750 [2018-07-25 08:52:29,223 INFO L87 Difference]: Start difference. First operand 250 states and 250 transitions. Second operand 126 states. [2018-07-25 08:52:29,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:29,351 INFO L93 Difference]: Finished difference Result 253 states and 253 transitions. [2018-07-25 08:52:29,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-07-25 08:52:29,351 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 249 [2018-07-25 08:52:29,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:29,352 INFO L225 Difference]: With dead ends: 253 [2018-07-25 08:52:29,352 INFO L226 Difference]: Without dead ends: 252 [2018-07-25 08:52:29,353 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7875, Invalid=7875, Unknown=0, NotChecked=0, Total=15750 [2018-07-25 08:52:29,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2018-07-25 08:52:29,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2018-07-25 08:52:29,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2018-07-25 08:52:29,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 252 transitions. [2018-07-25 08:52:29,356 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 252 transitions. Word has length 249 [2018-07-25 08:52:29,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:29,356 INFO L472 AbstractCegarLoop]: Abstraction has 252 states and 252 transitions. [2018-07-25 08:52:29,356 INFO L473 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-07-25 08:52:29,356 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 252 transitions. [2018-07-25 08:52:29,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-07-25 08:52:29,357 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:29,357 INFO L354 BasicCegarLoop]: trace histogram [125, 124, 1, 1] [2018-07-25 08:52:29,357 INFO L415 AbstractCegarLoop]: === Iteration 125 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:29,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1588482088, now seen corresponding path program 124 times [2018-07-25 08:52:29,357 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:29,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:30,030 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 08:52:30,031 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:30,031 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125] total 125 [2018-07-25 08:52:30,031 INFO L451 AbstractCegarLoop]: Interpolant automaton has 127 states [2018-07-25 08:52:30,032 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2018-07-25 08:52:30,032 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2018-07-25 08:52:30,032 INFO L87 Difference]: Start difference. First operand 252 states and 252 transitions. Second operand 127 states. [2018-07-25 08:52:30,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:30,277 INFO L93 Difference]: Finished difference Result 255 states and 255 transitions. [2018-07-25 08:52:30,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-07-25 08:52:30,277 INFO L78 Accepts]: Start accepts. Automaton has 127 states. Word has length 251 [2018-07-25 08:52:30,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:30,278 INFO L225 Difference]: With dead ends: 255 [2018-07-25 08:52:30,278 INFO L226 Difference]: Without dead ends: 254 [2018-07-25 08:52:30,279 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2018-07-25 08:52:30,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2018-07-25 08:52:30,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2018-07-25 08:52:30,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2018-07-25 08:52:30,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 254 transitions. [2018-07-25 08:52:30,282 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 254 transitions. Word has length 251 [2018-07-25 08:52:30,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:30,282 INFO L472 AbstractCegarLoop]: Abstraction has 254 states and 254 transitions. [2018-07-25 08:52:30,282 INFO L473 AbstractCegarLoop]: Interpolant automaton has 127 states. [2018-07-25 08:52:30,282 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 254 transitions. [2018-07-25 08:52:30,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-07-25 08:52:30,283 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:30,283 INFO L354 BasicCegarLoop]: trace histogram [126, 125, 1, 1] [2018-07-25 08:52:30,283 INFO L415 AbstractCegarLoop]: === Iteration 126 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:30,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1817895398, now seen corresponding path program 125 times [2018-07-25 08:52:30,284 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:30,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:30,725 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 08:52:30,725 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:30,725 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [126] total 126 [2018-07-25 08:52:30,726 INFO L451 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-07-25 08:52:30,727 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-07-25 08:52:30,727 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 08:52:30,728 INFO L87 Difference]: Start difference. First operand 254 states and 254 transitions. Second operand 128 states. [2018-07-25 08:52:30,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:30,847 INFO L93 Difference]: Finished difference Result 257 states and 257 transitions. [2018-07-25 08:52:30,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-07-25 08:52:30,847 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 253 [2018-07-25 08:52:30,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:30,847 INFO L225 Difference]: With dead ends: 257 [2018-07-25 08:52:30,848 INFO L226 Difference]: Without dead ends: 256 [2018-07-25 08:52:30,849 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 08:52:30,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2018-07-25 08:52:30,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2018-07-25 08:52:30,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2018-07-25 08:52:30,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 256 transitions. [2018-07-25 08:52:30,853 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 256 transitions. Word has length 253 [2018-07-25 08:52:30,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:30,853 INFO L472 AbstractCegarLoop]: Abstraction has 256 states and 256 transitions. [2018-07-25 08:52:30,854 INFO L473 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-07-25 08:52:30,854 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 256 transitions. [2018-07-25 08:52:30,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2018-07-25 08:52:30,855 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:30,855 INFO L354 BasicCegarLoop]: trace histogram [127, 126, 1, 1] [2018-07-25 08:52:30,855 INFO L415 AbstractCegarLoop]: === Iteration 127 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:30,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1054213084, now seen corresponding path program 126 times [2018-07-25 08:52:30,855 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:30,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:31,304 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 08:52:31,305 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:31,305 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127] total 127 [2018-07-25 08:52:31,305 INFO L451 AbstractCegarLoop]: Interpolant automaton has 129 states [2018-07-25 08:52:31,307 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2018-07-25 08:52:31,307 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2018-07-25 08:52:31,307 INFO L87 Difference]: Start difference. First operand 256 states and 256 transitions. Second operand 129 states. [2018-07-25 08:52:31,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:31,586 INFO L93 Difference]: Finished difference Result 259 states and 259 transitions. [2018-07-25 08:52:31,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-07-25 08:52:31,586 INFO L78 Accepts]: Start accepts. Automaton has 129 states. Word has length 255 [2018-07-25 08:52:31,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:31,587 INFO L225 Difference]: With dead ends: 259 [2018-07-25 08:52:31,587 INFO L226 Difference]: Without dead ends: 258 [2018-07-25 08:52:31,588 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2018-07-25 08:52:31,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-07-25 08:52:31,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2018-07-25 08:52:31,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2018-07-25 08:52:31,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 258 transitions. [2018-07-25 08:52:31,593 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 258 transitions. Word has length 255 [2018-07-25 08:52:31,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:31,593 INFO L472 AbstractCegarLoop]: Abstraction has 258 states and 258 transitions. [2018-07-25 08:52:31,593 INFO L473 AbstractCegarLoop]: Interpolant automaton has 129 states. [2018-07-25 08:52:31,593 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 258 transitions. [2018-07-25 08:52:31,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-07-25 08:52:31,595 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:31,595 INFO L354 BasicCegarLoop]: trace histogram [128, 127, 1, 1] [2018-07-25 08:52:31,595 INFO L415 AbstractCegarLoop]: === Iteration 128 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:31,595 INFO L82 PathProgramCache]: Analyzing trace with hash -513507042, now seen corresponding path program 127 times [2018-07-25 08:52:31,595 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:31,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:32,109 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 08:52:32,109 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:32,109 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [128] total 128 [2018-07-25 08:52:32,110 INFO L451 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-07-25 08:52:32,111 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-07-25 08:52:32,112 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8385, Invalid=8385, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 08:52:32,113 INFO L87 Difference]: Start difference. First operand 258 states and 258 transitions. Second operand 130 states. [2018-07-25 08:52:32,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:32,231 INFO L93 Difference]: Finished difference Result 261 states and 261 transitions. [2018-07-25 08:52:32,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-07-25 08:52:32,231 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 257 [2018-07-25 08:52:32,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:32,232 INFO L225 Difference]: With dead ends: 261 [2018-07-25 08:52:32,232 INFO L226 Difference]: Without dead ends: 260 [2018-07-25 08:52:32,234 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8385, Invalid=8385, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 08:52:32,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2018-07-25 08:52:32,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2018-07-25 08:52:32,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2018-07-25 08:52:32,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 260 transitions. [2018-07-25 08:52:32,238 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 260 transitions. Word has length 257 [2018-07-25 08:52:32,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:32,239 INFO L472 AbstractCegarLoop]: Abstraction has 260 states and 260 transitions. [2018-07-25 08:52:32,239 INFO L473 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-07-25 08:52:32,239 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 260 transitions. [2018-07-25 08:52:32,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2018-07-25 08:52:32,240 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:32,240 INFO L354 BasicCegarLoop]: trace histogram [129, 128, 1, 1] [2018-07-25 08:52:32,240 INFO L415 AbstractCegarLoop]: === Iteration 129 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:32,241 INFO L82 PathProgramCache]: Analyzing trace with hash 440972768, now seen corresponding path program 128 times [2018-07-25 08:52:32,241 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:32,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:32,706 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 08:52:32,707 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:32,707 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129] total 129 [2018-07-25 08:52:32,707 INFO L451 AbstractCegarLoop]: Interpolant automaton has 131 states [2018-07-25 08:52:32,709 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2018-07-25 08:52:32,710 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8515, Invalid=8515, Unknown=0, NotChecked=0, Total=17030 [2018-07-25 08:52:32,710 INFO L87 Difference]: Start difference. First operand 260 states and 260 transitions. Second operand 131 states. [2018-07-25 08:52:32,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:32,989 INFO L93 Difference]: Finished difference Result 263 states and 263 transitions. [2018-07-25 08:52:32,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-07-25 08:52:32,990 INFO L78 Accepts]: Start accepts. Automaton has 131 states. Word has length 259 [2018-07-25 08:52:32,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:32,990 INFO L225 Difference]: With dead ends: 263 [2018-07-25 08:52:32,990 INFO L226 Difference]: Without dead ends: 262 [2018-07-25 08:52:32,992 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8515, Invalid=8515, Unknown=0, NotChecked=0, Total=17030 [2018-07-25 08:52:32,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2018-07-25 08:52:32,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2018-07-25 08:52:32,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2018-07-25 08:52:32,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 262 transitions. [2018-07-25 08:52:32,995 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 262 transitions. Word has length 259 [2018-07-25 08:52:32,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:32,995 INFO L472 AbstractCegarLoop]: Abstraction has 262 states and 262 transitions. [2018-07-25 08:52:32,995 INFO L473 AbstractCegarLoop]: Interpolant automaton has 131 states. [2018-07-25 08:52:32,995 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 262 transitions. [2018-07-25 08:52:32,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2018-07-25 08:52:32,996 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:32,996 INFO L354 BasicCegarLoop]: trace histogram [130, 129, 1, 1] [2018-07-25 08:52:32,996 INFO L415 AbstractCegarLoop]: === Iteration 130 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:32,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1426931166, now seen corresponding path program 129 times [2018-07-25 08:52:32,996 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:33,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:33,507 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 08:52:33,508 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:33,508 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [130] total 130 [2018-07-25 08:52:33,508 INFO L451 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-07-25 08:52:33,509 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-07-25 08:52:33,510 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8646, Invalid=8646, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 08:52:33,510 INFO L87 Difference]: Start difference. First operand 262 states and 262 transitions. Second operand 132 states. [2018-07-25 08:52:33,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:33,809 INFO L93 Difference]: Finished difference Result 265 states and 265 transitions. [2018-07-25 08:52:33,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-07-25 08:52:33,809 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 261 [2018-07-25 08:52:33,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:33,810 INFO L225 Difference]: With dead ends: 265 [2018-07-25 08:52:33,810 INFO L226 Difference]: Without dead ends: 264 [2018-07-25 08:52:33,811 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8646, Invalid=8646, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 08:52:33,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2018-07-25 08:52:33,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2018-07-25 08:52:33,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2018-07-25 08:52:33,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 264 transitions. [2018-07-25 08:52:33,815 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 264 transitions. Word has length 261 [2018-07-25 08:52:33,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:33,815 INFO L472 AbstractCegarLoop]: Abstraction has 264 states and 264 transitions. [2018-07-25 08:52:33,815 INFO L473 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-07-25 08:52:33,815 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 264 transitions. [2018-07-25 08:52:33,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-07-25 08:52:33,817 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:33,817 INFO L354 BasicCegarLoop]: trace histogram [131, 130, 1, 1] [2018-07-25 08:52:33,817 INFO L415 AbstractCegarLoop]: === Iteration 131 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:33,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1186282012, now seen corresponding path program 130 times [2018-07-25 08:52:33,817 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:33,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:34,302 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 08:52:34,302 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:34,302 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131] total 131 [2018-07-25 08:52:34,302 INFO L451 AbstractCegarLoop]: Interpolant automaton has 133 states [2018-07-25 08:52:34,303 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2018-07-25 08:52:34,304 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8778, Invalid=8778, Unknown=0, NotChecked=0, Total=17556 [2018-07-25 08:52:34,304 INFO L87 Difference]: Start difference. First operand 264 states and 264 transitions. Second operand 133 states. [2018-07-25 08:52:34,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:34,549 INFO L93 Difference]: Finished difference Result 267 states and 267 transitions. [2018-07-25 08:52:34,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-07-25 08:52:34,549 INFO L78 Accepts]: Start accepts. Automaton has 133 states. Word has length 263 [2018-07-25 08:52:34,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:34,550 INFO L225 Difference]: With dead ends: 267 [2018-07-25 08:52:34,550 INFO L226 Difference]: Without dead ends: 266 [2018-07-25 08:52:34,552 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8778, Invalid=8778, Unknown=0, NotChecked=0, Total=17556 [2018-07-25 08:52:34,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2018-07-25 08:52:34,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2018-07-25 08:52:34,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2018-07-25 08:52:34,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 266 transitions. [2018-07-25 08:52:34,556 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 266 transitions. Word has length 263 [2018-07-25 08:52:34,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:34,556 INFO L472 AbstractCegarLoop]: Abstraction has 266 states and 266 transitions. [2018-07-25 08:52:34,556 INFO L473 AbstractCegarLoop]: Interpolant automaton has 133 states. [2018-07-25 08:52:34,556 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 266 transitions. [2018-07-25 08:52:34,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2018-07-25 08:52:34,557 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:34,558 INFO L354 BasicCegarLoop]: trace histogram [132, 131, 1, 1] [2018-07-25 08:52:34,558 INFO L415 AbstractCegarLoop]: === Iteration 132 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:34,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1850679002, now seen corresponding path program 131 times [2018-07-25 08:52:34,558 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:34,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:35,062 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 08:52:35,063 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:35,063 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [132] total 132 [2018-07-25 08:52:35,063 INFO L451 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-07-25 08:52:35,064 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-07-25 08:52:35,065 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8911, Invalid=8911, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 08:52:35,065 INFO L87 Difference]: Start difference. First operand 266 states and 266 transitions. Second operand 134 states. [2018-07-25 08:52:35,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:35,374 INFO L93 Difference]: Finished difference Result 269 states and 269 transitions. [2018-07-25 08:52:35,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-07-25 08:52:35,374 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 265 [2018-07-25 08:52:35,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:35,375 INFO L225 Difference]: With dead ends: 269 [2018-07-25 08:52:35,375 INFO L226 Difference]: Without dead ends: 268 [2018-07-25 08:52:35,376 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8911, Invalid=8911, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 08:52:35,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2018-07-25 08:52:35,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2018-07-25 08:52:35,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2018-07-25 08:52:35,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 268 transitions. [2018-07-25 08:52:35,379 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 268 transitions. Word has length 265 [2018-07-25 08:52:35,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:35,379 INFO L472 AbstractCegarLoop]: Abstraction has 268 states and 268 transitions. [2018-07-25 08:52:35,379 INFO L473 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-07-25 08:52:35,379 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 268 transitions. [2018-07-25 08:52:35,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2018-07-25 08:52:35,380 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:35,380 INFO L354 BasicCegarLoop]: trace histogram [133, 132, 1, 1] [2018-07-25 08:52:35,380 INFO L415 AbstractCegarLoop]: === Iteration 133 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:35,381 INFO L82 PathProgramCache]: Analyzing trace with hash -386059288, now seen corresponding path program 132 times [2018-07-25 08:52:35,381 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:35,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:35,889 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 08:52:35,889 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:35,889 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [133] total 133 [2018-07-25 08:52:35,890 INFO L451 AbstractCegarLoop]: Interpolant automaton has 135 states [2018-07-25 08:52:35,891 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2018-07-25 08:52:35,891 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9045, Invalid=9045, Unknown=0, NotChecked=0, Total=18090 [2018-07-25 08:52:35,892 INFO L87 Difference]: Start difference. First operand 268 states and 268 transitions. Second operand 135 states. [2018-07-25 08:52:36,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:36,276 INFO L93 Difference]: Finished difference Result 271 states and 271 transitions. [2018-07-25 08:52:36,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2018-07-25 08:52:36,277 INFO L78 Accepts]: Start accepts. Automaton has 135 states. Word has length 267 [2018-07-25 08:52:36,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:36,277 INFO L225 Difference]: With dead ends: 271 [2018-07-25 08:52:36,277 INFO L226 Difference]: Without dead ends: 270 [2018-07-25 08:52:36,278 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9045, Invalid=9045, Unknown=0, NotChecked=0, Total=18090 [2018-07-25 08:52:36,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2018-07-25 08:52:36,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2018-07-25 08:52:36,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2018-07-25 08:52:36,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 270 transitions. [2018-07-25 08:52:36,281 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 270 transitions. Word has length 267 [2018-07-25 08:52:36,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:36,282 INFO L472 AbstractCegarLoop]: Abstraction has 270 states and 270 transitions. [2018-07-25 08:52:36,282 INFO L473 AbstractCegarLoop]: Interpolant automaton has 135 states. [2018-07-25 08:52:36,282 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 270 transitions. [2018-07-25 08:52:36,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2018-07-25 08:52:36,282 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:36,283 INFO L354 BasicCegarLoop]: trace histogram [134, 133, 1, 1] [2018-07-25 08:52:36,283 INFO L415 AbstractCegarLoop]: === Iteration 134 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:36,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1635787222, now seen corresponding path program 133 times [2018-07-25 08:52:36,283 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:36,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:36,927 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 08:52:36,927 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:36,927 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [134] total 134 [2018-07-25 08:52:36,928 INFO L451 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-07-25 08:52:36,929 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-07-25 08:52:36,929 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9180, Invalid=9180, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 08:52:36,929 INFO L87 Difference]: Start difference. First operand 270 states and 270 transitions. Second operand 136 states. [2018-07-25 08:52:37,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:37,072 INFO L93 Difference]: Finished difference Result 273 states and 273 transitions. [2018-07-25 08:52:37,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-07-25 08:52:37,072 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 269 [2018-07-25 08:52:37,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:37,073 INFO L225 Difference]: With dead ends: 273 [2018-07-25 08:52:37,073 INFO L226 Difference]: Without dead ends: 272 [2018-07-25 08:52:37,074 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9180, Invalid=9180, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 08:52:37,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2018-07-25 08:52:37,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2018-07-25 08:52:37,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2018-07-25 08:52:37,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 272 transitions. [2018-07-25 08:52:37,078 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 272 transitions. Word has length 269 [2018-07-25 08:52:37,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:37,079 INFO L472 AbstractCegarLoop]: Abstraction has 272 states and 272 transitions. [2018-07-25 08:52:37,079 INFO L473 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-07-25 08:52:37,079 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 272 transitions. [2018-07-25 08:52:37,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2018-07-25 08:52:37,080 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:37,080 INFO L354 BasicCegarLoop]: trace histogram [135, 134, 1, 1] [2018-07-25 08:52:37,080 INFO L415 AbstractCegarLoop]: === Iteration 135 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:37,080 INFO L82 PathProgramCache]: Analyzing trace with hash -33488916, now seen corresponding path program 134 times [2018-07-25 08:52:37,081 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:37,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:37,601 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 08:52:37,601 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:37,601 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [135] total 135 [2018-07-25 08:52:37,601 INFO L451 AbstractCegarLoop]: Interpolant automaton has 137 states [2018-07-25 08:52:37,603 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2018-07-25 08:52:37,603 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9316, Invalid=9316, Unknown=0, NotChecked=0, Total=18632 [2018-07-25 08:52:37,604 INFO L87 Difference]: Start difference. First operand 272 states and 272 transitions. Second operand 137 states. [2018-07-25 08:52:37,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:37,955 INFO L93 Difference]: Finished difference Result 275 states and 275 transitions. [2018-07-25 08:52:37,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-07-25 08:52:37,955 INFO L78 Accepts]: Start accepts. Automaton has 137 states. Word has length 271 [2018-07-25 08:52:37,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:37,956 INFO L225 Difference]: With dead ends: 275 [2018-07-25 08:52:37,956 INFO L226 Difference]: Without dead ends: 274 [2018-07-25 08:52:37,958 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9316, Invalid=9316, Unknown=0, NotChecked=0, Total=18632 [2018-07-25 08:52:37,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2018-07-25 08:52:37,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2018-07-25 08:52:37,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2018-07-25 08:52:37,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 274 transitions. [2018-07-25 08:52:37,963 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 274 transitions. Word has length 271 [2018-07-25 08:52:37,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:37,963 INFO L472 AbstractCegarLoop]: Abstraction has 274 states and 274 transitions. [2018-07-25 08:52:37,963 INFO L473 AbstractCegarLoop]: Interpolant automaton has 137 states. [2018-07-25 08:52:37,963 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 274 transitions. [2018-07-25 08:52:37,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-07-25 08:52:37,965 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:37,965 INFO L354 BasicCegarLoop]: trace histogram [136, 135, 1, 1] [2018-07-25 08:52:37,965 INFO L415 AbstractCegarLoop]: === Iteration 136 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:37,965 INFO L82 PathProgramCache]: Analyzing trace with hash -2118076114, now seen corresponding path program 135 times [2018-07-25 08:52:37,965 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:38,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:38,897 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 08:52:38,897 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:38,897 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [136] total 136 [2018-07-25 08:52:38,898 INFO L451 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-07-25 08:52:38,899 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-07-25 08:52:38,901 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9453, Invalid=9453, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 08:52:38,901 INFO L87 Difference]: Start difference. First operand 274 states and 274 transitions. Second operand 138 states. [2018-07-25 08:52:39,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:39,350 INFO L93 Difference]: Finished difference Result 277 states and 277 transitions. [2018-07-25 08:52:39,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2018-07-25 08:52:39,350 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 273 [2018-07-25 08:52:39,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:39,350 INFO L225 Difference]: With dead ends: 277 [2018-07-25 08:52:39,350 INFO L226 Difference]: Without dead ends: 276 [2018-07-25 08:52:39,352 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9453, Invalid=9453, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 08:52:39,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2018-07-25 08:52:39,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2018-07-25 08:52:39,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2018-07-25 08:52:39,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 276 transitions. [2018-07-25 08:52:39,355 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 276 transitions. Word has length 273 [2018-07-25 08:52:39,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:39,355 INFO L472 AbstractCegarLoop]: Abstraction has 276 states and 276 transitions. [2018-07-25 08:52:39,355 INFO L473 AbstractCegarLoop]: Interpolant automaton has 138 states. [2018-07-25 08:52:39,355 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 276 transitions. [2018-07-25 08:52:39,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2018-07-25 08:52:39,356 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:39,356 INFO L354 BasicCegarLoop]: trace histogram [137, 136, 1, 1] [2018-07-25 08:52:39,356 INFO L415 AbstractCegarLoop]: === Iteration 137 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:39,357 INFO L82 PathProgramCache]: Analyzing trace with hash 343353840, now seen corresponding path program 136 times [2018-07-25 08:52:39,357 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:39,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:39,912 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 08:52:39,912 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:39,913 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [137] total 137 [2018-07-25 08:52:39,913 INFO L451 AbstractCegarLoop]: Interpolant automaton has 139 states [2018-07-25 08:52:39,915 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2018-07-25 08:52:39,915 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2018-07-25 08:52:39,916 INFO L87 Difference]: Start difference. First operand 276 states and 276 transitions. Second operand 139 states. [2018-07-25 08:52:40,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:40,313 INFO L93 Difference]: Finished difference Result 279 states and 279 transitions. [2018-07-25 08:52:40,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-07-25 08:52:40,313 INFO L78 Accepts]: Start accepts. Automaton has 139 states. Word has length 275 [2018-07-25 08:52:40,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:40,314 INFO L225 Difference]: With dead ends: 279 [2018-07-25 08:52:40,314 INFO L226 Difference]: Without dead ends: 278 [2018-07-25 08:52:40,315 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2018-07-25 08:52:40,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2018-07-25 08:52:40,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2018-07-25 08:52:40,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2018-07-25 08:52:40,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 278 transitions. [2018-07-25 08:52:40,318 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 278 transitions. Word has length 275 [2018-07-25 08:52:40,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:40,318 INFO L472 AbstractCegarLoop]: Abstraction has 278 states and 278 transitions. [2018-07-25 08:52:40,318 INFO L473 AbstractCegarLoop]: Interpolant automaton has 139 states. [2018-07-25 08:52:40,318 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 278 transitions. [2018-07-25 08:52:40,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2018-07-25 08:52:40,319 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:40,319 INFO L354 BasicCegarLoop]: trace histogram [138, 137, 1, 1] [2018-07-25 08:52:40,319 INFO L415 AbstractCegarLoop]: === Iteration 138 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:40,320 INFO L82 PathProgramCache]: Analyzing trace with hash -749440462, now seen corresponding path program 137 times [2018-07-25 08:52:40,320 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:40,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:40,911 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 08:52:40,912 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:40,912 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [138] total 138 [2018-07-25 08:52:40,912 INFO L451 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-07-25 08:52:40,914 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-07-25 08:52:40,915 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9730, Invalid=9730, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 08:52:40,915 INFO L87 Difference]: Start difference. First operand 278 states and 278 transitions. Second operand 140 states. [2018-07-25 08:52:41,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:41,456 INFO L93 Difference]: Finished difference Result 281 states and 281 transitions. [2018-07-25 08:52:41,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-07-25 08:52:41,456 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 277 [2018-07-25 08:52:41,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:41,457 INFO L225 Difference]: With dead ends: 281 [2018-07-25 08:52:41,457 INFO L226 Difference]: Without dead ends: 280 [2018-07-25 08:52:41,458 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9730, Invalid=9730, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 08:52:41,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2018-07-25 08:52:41,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2018-07-25 08:52:41,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2018-07-25 08:52:41,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 280 transitions. [2018-07-25 08:52:41,462 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 280 transitions. Word has length 277 [2018-07-25 08:52:41,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:41,462 INFO L472 AbstractCegarLoop]: Abstraction has 280 states and 280 transitions. [2018-07-25 08:52:41,462 INFO L473 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-07-25 08:52:41,463 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 280 transitions. [2018-07-25 08:52:41,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2018-07-25 08:52:41,464 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:41,464 INFO L354 BasicCegarLoop]: trace histogram [139, 138, 1, 1] [2018-07-25 08:52:41,464 INFO L415 AbstractCegarLoop]: === Iteration 139 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:41,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1342222836, now seen corresponding path program 138 times [2018-07-25 08:52:41,464 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:41,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:42,004 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 08:52:42,005 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:42,005 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [139] total 139 [2018-07-25 08:52:42,005 INFO L451 AbstractCegarLoop]: Interpolant automaton has 141 states [2018-07-25 08:52:42,006 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2018-07-25 08:52:42,007 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9870, Invalid=9870, Unknown=0, NotChecked=0, Total=19740 [2018-07-25 08:52:42,007 INFO L87 Difference]: Start difference. First operand 280 states and 280 transitions. Second operand 141 states. [2018-07-25 08:52:42,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:42,503 INFO L93 Difference]: Finished difference Result 283 states and 283 transitions. [2018-07-25 08:52:42,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2018-07-25 08:52:42,503 INFO L78 Accepts]: Start accepts. Automaton has 141 states. Word has length 279 [2018-07-25 08:52:42,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:42,504 INFO L225 Difference]: With dead ends: 283 [2018-07-25 08:52:42,504 INFO L226 Difference]: Without dead ends: 282 [2018-07-25 08:52:42,505 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9870, Invalid=9870, Unknown=0, NotChecked=0, Total=19740 [2018-07-25 08:52:42,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2018-07-25 08:52:42,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2018-07-25 08:52:42,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2018-07-25 08:52:42,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 282 transitions. [2018-07-25 08:52:42,508 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 282 transitions. Word has length 279 [2018-07-25 08:52:42,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:42,508 INFO L472 AbstractCegarLoop]: Abstraction has 282 states and 282 transitions. [2018-07-25 08:52:42,508 INFO L473 AbstractCegarLoop]: Interpolant automaton has 141 states. [2018-07-25 08:52:42,508 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 282 transitions. [2018-07-25 08:52:42,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2018-07-25 08:52:42,510 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:42,510 INFO L354 BasicCegarLoop]: trace histogram [140, 139, 1, 1] [2018-07-25 08:52:42,510 INFO L415 AbstractCegarLoop]: === Iteration 140 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:42,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1385957686, now seen corresponding path program 139 times [2018-07-25 08:52:42,510 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:42,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:43,118 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 08:52:43,118 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:43,118 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [140] total 140 [2018-07-25 08:52:43,118 INFO L451 AbstractCegarLoop]: Interpolant automaton has 142 states [2018-07-25 08:52:43,120 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2018-07-25 08:52:43,121 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10011, Invalid=10011, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 08:52:43,121 INFO L87 Difference]: Start difference. First operand 282 states and 282 transitions. Second operand 142 states. [2018-07-25 08:52:43,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:43,621 INFO L93 Difference]: Finished difference Result 285 states and 285 transitions. [2018-07-25 08:52:43,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-07-25 08:52:43,621 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 281 [2018-07-25 08:52:43,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:43,621 INFO L225 Difference]: With dead ends: 285 [2018-07-25 08:52:43,622 INFO L226 Difference]: Without dead ends: 284 [2018-07-25 08:52:43,623 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10011, Invalid=10011, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 08:52:43,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2018-07-25 08:52:43,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2018-07-25 08:52:43,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2018-07-25 08:52:43,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 284 transitions. [2018-07-25 08:52:43,626 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 284 transitions. Word has length 281 [2018-07-25 08:52:43,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:43,626 INFO L472 AbstractCegarLoop]: Abstraction has 284 states and 284 transitions. [2018-07-25 08:52:43,626 INFO L473 AbstractCegarLoop]: Interpolant automaton has 142 states. [2018-07-25 08:52:43,626 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 284 transitions. [2018-07-25 08:52:43,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2018-07-25 08:52:43,627 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:43,627 INFO L354 BasicCegarLoop]: trace histogram [141, 140, 1, 1] [2018-07-25 08:52:43,627 INFO L415 AbstractCegarLoop]: === Iteration 141 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:43,628 INFO L82 PathProgramCache]: Analyzing trace with hash 465475576, now seen corresponding path program 140 times [2018-07-25 08:52:43,628 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:43,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:44,189 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 08:52:44,189 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:44,189 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [141] total 141 [2018-07-25 08:52:44,189 INFO L451 AbstractCegarLoop]: Interpolant automaton has 143 states [2018-07-25 08:52:44,191 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2018-07-25 08:52:44,192 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10153, Invalid=10153, Unknown=0, NotChecked=0, Total=20306 [2018-07-25 08:52:44,192 INFO L87 Difference]: Start difference. First operand 284 states and 284 transitions. Second operand 143 states. [2018-07-25 08:52:44,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:44,712 INFO L93 Difference]: Finished difference Result 287 states and 287 transitions. [2018-07-25 08:52:44,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2018-07-25 08:52:44,712 INFO L78 Accepts]: Start accepts. Automaton has 143 states. Word has length 283 [2018-07-25 08:52:44,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:44,713 INFO L225 Difference]: With dead ends: 287 [2018-07-25 08:52:44,713 INFO L226 Difference]: Without dead ends: 286 [2018-07-25 08:52:44,715 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10153, Invalid=10153, Unknown=0, NotChecked=0, Total=20306 [2018-07-25 08:52:44,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2018-07-25 08:52:44,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2018-07-25 08:52:44,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2018-07-25 08:52:44,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 286 transitions. [2018-07-25 08:52:44,719 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 286 transitions. Word has length 283 [2018-07-25 08:52:44,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:44,720 INFO L472 AbstractCegarLoop]: Abstraction has 286 states and 286 transitions. [2018-07-25 08:52:44,720 INFO L473 AbstractCegarLoop]: Interpolant automaton has 143 states. [2018-07-25 08:52:44,720 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 286 transitions. [2018-07-25 08:52:44,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2018-07-25 08:52:44,721 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:44,721 INFO L354 BasicCegarLoop]: trace histogram [142, 141, 1, 1] [2018-07-25 08:52:44,722 INFO L415 AbstractCegarLoop]: === Iteration 142 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:44,722 INFO L82 PathProgramCache]: Analyzing trace with hash 645430842, now seen corresponding path program 141 times [2018-07-25 08:52:44,722 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:44,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:45,432 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 08:52:45,433 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:45,433 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [142] total 142 [2018-07-25 08:52:45,433 INFO L451 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-07-25 08:52:45,434 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-07-25 08:52:45,435 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10296, Invalid=10296, Unknown=0, NotChecked=0, Total=20592 [2018-07-25 08:52:45,436 INFO L87 Difference]: Start difference. First operand 286 states and 286 transitions. Second operand 144 states. [2018-07-25 08:52:45,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:45,973 INFO L93 Difference]: Finished difference Result 289 states and 289 transitions. [2018-07-25 08:52:45,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2018-07-25 08:52:45,973 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 285 [2018-07-25 08:52:45,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:45,974 INFO L225 Difference]: With dead ends: 289 [2018-07-25 08:52:45,974 INFO L226 Difference]: Without dead ends: 288 [2018-07-25 08:52:45,976 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10296, Invalid=10296, Unknown=0, NotChecked=0, Total=20592 [2018-07-25 08:52:45,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2018-07-25 08:52:45,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2018-07-25 08:52:45,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2018-07-25 08:52:45,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 288 transitions. [2018-07-25 08:52:45,979 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 288 transitions. Word has length 285 [2018-07-25 08:52:45,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:45,979 INFO L472 AbstractCegarLoop]: Abstraction has 288 states and 288 transitions. [2018-07-25 08:52:45,979 INFO L473 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-07-25 08:52:45,979 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 288 transitions. [2018-07-25 08:52:45,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2018-07-25 08:52:45,980 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:45,981 INFO L354 BasicCegarLoop]: trace histogram [143, 142, 1, 1] [2018-07-25 08:52:45,981 INFO L415 AbstractCegarLoop]: === Iteration 143 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:45,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1783749628, now seen corresponding path program 142 times [2018-07-25 08:52:45,981 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:46,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:46,590 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 08:52:46,591 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:46,591 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [143] total 143 [2018-07-25 08:52:46,591 INFO L451 AbstractCegarLoop]: Interpolant automaton has 145 states [2018-07-25 08:52:46,593 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2018-07-25 08:52:46,594 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10440, Invalid=10440, Unknown=0, NotChecked=0, Total=20880 [2018-07-25 08:52:46,594 INFO L87 Difference]: Start difference. First operand 288 states and 288 transitions. Second operand 145 states. [2018-07-25 08:52:47,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:47,148 INFO L93 Difference]: Finished difference Result 291 states and 291 transitions. [2018-07-25 08:52:47,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2018-07-25 08:52:47,148 INFO L78 Accepts]: Start accepts. Automaton has 145 states. Word has length 287 [2018-07-25 08:52:47,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:47,148 INFO L225 Difference]: With dead ends: 291 [2018-07-25 08:52:47,148 INFO L226 Difference]: Without dead ends: 290 [2018-07-25 08:52:47,150 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10440, Invalid=10440, Unknown=0, NotChecked=0, Total=20880 [2018-07-25 08:52:47,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2018-07-25 08:52:47,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2018-07-25 08:52:47,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2018-07-25 08:52:47,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 290 transitions. [2018-07-25 08:52:47,153 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 290 transitions. Word has length 287 [2018-07-25 08:52:47,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:47,153 INFO L472 AbstractCegarLoop]: Abstraction has 290 states and 290 transitions. [2018-07-25 08:52:47,153 INFO L473 AbstractCegarLoop]: Interpolant automaton has 145 states. [2018-07-25 08:52:47,153 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 290 transitions. [2018-07-25 08:52:47,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2018-07-25 08:52:47,154 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:47,154 INFO L354 BasicCegarLoop]: trace histogram [144, 143, 1, 1] [2018-07-25 08:52:47,154 INFO L415 AbstractCegarLoop]: === Iteration 144 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:47,154 INFO L82 PathProgramCache]: Analyzing trace with hash 491442494, now seen corresponding path program 143 times [2018-07-25 08:52:47,154 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:47,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:47,782 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 08:52:47,782 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:47,782 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [144] total 144 [2018-07-25 08:52:47,783 INFO L451 AbstractCegarLoop]: Interpolant automaton has 146 states [2018-07-25 08:52:47,784 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2018-07-25 08:52:47,785 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10585, Invalid=10585, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 08:52:47,785 INFO L87 Difference]: Start difference. First operand 290 states and 290 transitions. Second operand 146 states. [2018-07-25 08:52:48,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:48,285 INFO L93 Difference]: Finished difference Result 293 states and 293 transitions. [2018-07-25 08:52:48,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2018-07-25 08:52:48,285 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 289 [2018-07-25 08:52:48,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:48,286 INFO L225 Difference]: With dead ends: 293 [2018-07-25 08:52:48,286 INFO L226 Difference]: Without dead ends: 292 [2018-07-25 08:52:48,287 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10585, Invalid=10585, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 08:52:48,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2018-07-25 08:52:48,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2018-07-25 08:52:48,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2018-07-25 08:52:48,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 292 transitions. [2018-07-25 08:52:48,290 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 292 transitions. Word has length 289 [2018-07-25 08:52:48,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:48,291 INFO L472 AbstractCegarLoop]: Abstraction has 292 states and 292 transitions. [2018-07-25 08:52:48,291 INFO L473 AbstractCegarLoop]: Interpolant automaton has 146 states. [2018-07-25 08:52:48,291 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 292 transitions. [2018-07-25 08:52:48,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2018-07-25 08:52:48,291 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:48,291 INFO L354 BasicCegarLoop]: trace histogram [145, 144, 1, 1] [2018-07-25 08:52:48,292 INFO L415 AbstractCegarLoop]: === Iteration 145 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:48,292 INFO L82 PathProgramCache]: Analyzing trace with hash -170164736, now seen corresponding path program 144 times [2018-07-25 08:52:48,292 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:48,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:48,881 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 08:52:48,881 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:48,881 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [145] total 145 [2018-07-25 08:52:48,881 INFO L451 AbstractCegarLoop]: Interpolant automaton has 147 states [2018-07-25 08:52:48,883 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2018-07-25 08:52:48,884 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10731, Invalid=10731, Unknown=0, NotChecked=0, Total=21462 [2018-07-25 08:52:48,884 INFO L87 Difference]: Start difference. First operand 292 states and 292 transitions. Second operand 147 states. [2018-07-25 08:52:49,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:49,390 INFO L93 Difference]: Finished difference Result 295 states and 295 transitions. [2018-07-25 08:52:49,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2018-07-25 08:52:49,390 INFO L78 Accepts]: Start accepts. Automaton has 147 states. Word has length 291 [2018-07-25 08:52:49,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:49,391 INFO L225 Difference]: With dead ends: 295 [2018-07-25 08:52:49,391 INFO L226 Difference]: Without dead ends: 294 [2018-07-25 08:52:49,392 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10731, Invalid=10731, Unknown=0, NotChecked=0, Total=21462 [2018-07-25 08:52:49,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2018-07-25 08:52:49,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2018-07-25 08:52:49,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2018-07-25 08:52:49,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 294 transitions. [2018-07-25 08:52:49,395 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 294 transitions. Word has length 291 [2018-07-25 08:52:49,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:49,395 INFO L472 AbstractCegarLoop]: Abstraction has 294 states and 294 transitions. [2018-07-25 08:52:49,395 INFO L473 AbstractCegarLoop]: Interpolant automaton has 147 states. [2018-07-25 08:52:49,395 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 294 transitions. [2018-07-25 08:52:49,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-07-25 08:52:49,396 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:49,396 INFO L354 BasicCegarLoop]: trace histogram [146, 145, 1, 1] [2018-07-25 08:52:49,396 INFO L415 AbstractCegarLoop]: === Iteration 146 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:49,396 INFO L82 PathProgramCache]: Analyzing trace with hash -319552958, now seen corresponding path program 145 times [2018-07-25 08:52:49,397 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:49,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:50,041 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 08:52:50,042 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:50,042 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [146] total 146 [2018-07-25 08:52:50,042 INFO L451 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-07-25 08:52:50,044 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-07-25 08:52:50,045 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10878, Invalid=10878, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 08:52:50,045 INFO L87 Difference]: Start difference. First operand 294 states and 294 transitions. Second operand 148 states. [2018-07-25 08:52:50,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:50,469 INFO L93 Difference]: Finished difference Result 297 states and 297 transitions. [2018-07-25 08:52:50,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-07-25 08:52:50,469 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 293 [2018-07-25 08:52:50,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:50,470 INFO L225 Difference]: With dead ends: 297 [2018-07-25 08:52:50,470 INFO L226 Difference]: Without dead ends: 296 [2018-07-25 08:52:50,472 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10878, Invalid=10878, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 08:52:50,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2018-07-25 08:52:50,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2018-07-25 08:52:50,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2018-07-25 08:52:50,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 296 transitions. [2018-07-25 08:52:50,475 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 296 transitions. Word has length 293 [2018-07-25 08:52:50,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:50,475 INFO L472 AbstractCegarLoop]: Abstraction has 296 states and 296 transitions. [2018-07-25 08:52:50,475 INFO L473 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-07-25 08:52:50,475 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 296 transitions. [2018-07-25 08:52:50,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2018-07-25 08:52:50,476 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:50,476 INFO L354 BasicCegarLoop]: trace histogram [147, 146, 1, 1] [2018-07-25 08:52:50,476 INFO L415 AbstractCegarLoop]: === Iteration 147 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:50,477 INFO L82 PathProgramCache]: Analyzing trace with hash 2147253764, now seen corresponding path program 146 times [2018-07-25 08:52:50,477 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:50,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:51,110 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 08:52:51,111 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:51,111 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [147] total 147 [2018-07-25 08:52:51,112 INFO L451 AbstractCegarLoop]: Interpolant automaton has 149 states [2018-07-25 08:52:51,113 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2018-07-25 08:52:51,114 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11026, Invalid=11026, Unknown=0, NotChecked=0, Total=22052 [2018-07-25 08:52:51,114 INFO L87 Difference]: Start difference. First operand 296 states and 296 transitions. Second operand 149 states. [2018-07-25 08:52:51,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:51,334 INFO L93 Difference]: Finished difference Result 299 states and 299 transitions. [2018-07-25 08:52:51,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2018-07-25 08:52:51,334 INFO L78 Accepts]: Start accepts. Automaton has 149 states. Word has length 295 [2018-07-25 08:52:51,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:51,335 INFO L225 Difference]: With dead ends: 299 [2018-07-25 08:52:51,335 INFO L226 Difference]: Without dead ends: 298 [2018-07-25 08:52:51,337 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11026, Invalid=11026, Unknown=0, NotChecked=0, Total=22052 [2018-07-25 08:52:51,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2018-07-25 08:52:51,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2018-07-25 08:52:51,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2018-07-25 08:52:51,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 298 transitions. [2018-07-25 08:52:51,342 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 298 transitions. Word has length 295 [2018-07-25 08:52:51,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:51,342 INFO L472 AbstractCegarLoop]: Abstraction has 298 states and 298 transitions. [2018-07-25 08:52:51,343 INFO L473 AbstractCegarLoop]: Interpolant automaton has 149 states. [2018-07-25 08:52:51,343 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 298 transitions. [2018-07-25 08:52:51,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2018-07-25 08:52:51,344 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:51,344 INFO L354 BasicCegarLoop]: trace histogram [148, 147, 1, 1] [2018-07-25 08:52:51,344 INFO L415 AbstractCegarLoop]: === Iteration 148 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:51,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1926566214, now seen corresponding path program 147 times [2018-07-25 08:52:51,345 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:51,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:52,105 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 08:52:52,105 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:52,105 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [148] total 148 [2018-07-25 08:52:52,105 INFO L451 AbstractCegarLoop]: Interpolant automaton has 150 states [2018-07-25 08:52:52,107 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2018-07-25 08:52:52,108 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11175, Invalid=11175, Unknown=0, NotChecked=0, Total=22350 [2018-07-25 08:52:52,108 INFO L87 Difference]: Start difference. First operand 298 states and 298 transitions. Second operand 150 states. [2018-07-25 08:52:52,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:52,739 INFO L93 Difference]: Finished difference Result 301 states and 301 transitions. [2018-07-25 08:52:52,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2018-07-25 08:52:52,740 INFO L78 Accepts]: Start accepts. Automaton has 150 states. Word has length 297 [2018-07-25 08:52:52,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:52,740 INFO L225 Difference]: With dead ends: 301 [2018-07-25 08:52:52,740 INFO L226 Difference]: Without dead ends: 300 [2018-07-25 08:52:52,742 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11175, Invalid=11175, Unknown=0, NotChecked=0, Total=22350 [2018-07-25 08:52:52,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2018-07-25 08:52:52,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2018-07-25 08:52:52,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2018-07-25 08:52:52,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 300 transitions. [2018-07-25 08:52:52,745 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 300 transitions. Word has length 297 [2018-07-25 08:52:52,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:52,745 INFO L472 AbstractCegarLoop]: Abstraction has 300 states and 300 transitions. [2018-07-25 08:52:52,745 INFO L473 AbstractCegarLoop]: Interpolant automaton has 150 states. [2018-07-25 08:52:52,745 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 300 transitions. [2018-07-25 08:52:52,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2018-07-25 08:52:52,746 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:52,746 INFO L354 BasicCegarLoop]: trace histogram [149, 148, 1, 1] [2018-07-25 08:52:52,746 INFO L415 AbstractCegarLoop]: === Iteration 149 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:52,746 INFO L82 PathProgramCache]: Analyzing trace with hash 299228168, now seen corresponding path program 148 times [2018-07-25 08:52:52,746 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:52,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:53,411 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 08:52:53,411 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:53,412 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [149] total 149 [2018-07-25 08:52:53,412 INFO L451 AbstractCegarLoop]: Interpolant automaton has 151 states [2018-07-25 08:52:53,414 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2018-07-25 08:52:53,415 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11325, Invalid=11325, Unknown=0, NotChecked=0, Total=22650 [2018-07-25 08:52:53,415 INFO L87 Difference]: Start difference. First operand 300 states and 300 transitions. Second operand 151 states. [2018-07-25 08:52:54,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:54,106 INFO L93 Difference]: Finished difference Result 303 states and 303 transitions. [2018-07-25 08:52:54,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2018-07-25 08:52:54,107 INFO L78 Accepts]: Start accepts. Automaton has 151 states. Word has length 299 [2018-07-25 08:52:54,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:54,108 INFO L225 Difference]: With dead ends: 303 [2018-07-25 08:52:54,108 INFO L226 Difference]: Without dead ends: 302 [2018-07-25 08:52:54,109 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11325, Invalid=11325, Unknown=0, NotChecked=0, Total=22650 [2018-07-25 08:52:54,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2018-07-25 08:52:54,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 302. [2018-07-25 08:52:54,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2018-07-25 08:52:54,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 302 transitions. [2018-07-25 08:52:54,112 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 302 transitions. Word has length 299 [2018-07-25 08:52:54,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:54,113 INFO L472 AbstractCegarLoop]: Abstraction has 302 states and 302 transitions. [2018-07-25 08:52:54,113 INFO L473 AbstractCegarLoop]: Interpolant automaton has 151 states. [2018-07-25 08:52:54,113 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 302 transitions. [2018-07-25 08:52:54,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2018-07-25 08:52:54,114 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:54,114 INFO L354 BasicCegarLoop]: trace histogram [150, 149, 1, 1] [2018-07-25 08:52:54,114 INFO L415 AbstractCegarLoop]: === Iteration 150 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:54,114 INFO L82 PathProgramCache]: Analyzing trace with hash -204538294, now seen corresponding path program 149 times [2018-07-25 08:52:54,114 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:54,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:54,895 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 08:52:54,896 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:54,896 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [150] total 150 [2018-07-25 08:52:54,896 INFO L451 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-07-25 08:52:54,899 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-07-25 08:52:54,900 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11476, Invalid=11476, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 08:52:54,900 INFO L87 Difference]: Start difference. First operand 302 states and 302 transitions. Second operand 152 states. [2018-07-25 08:52:55,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:55,198 INFO L93 Difference]: Finished difference Result 305 states and 305 transitions. [2018-07-25 08:52:55,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2018-07-25 08:52:55,198 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 301 [2018-07-25 08:52:55,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:55,199 INFO L225 Difference]: With dead ends: 305 [2018-07-25 08:52:55,199 INFO L226 Difference]: Without dead ends: 304 [2018-07-25 08:52:55,201 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11476, Invalid=11476, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 08:52:55,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2018-07-25 08:52:55,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2018-07-25 08:52:55,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2018-07-25 08:52:55,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 304 transitions. [2018-07-25 08:52:55,204 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 304 transitions. Word has length 301 [2018-07-25 08:52:55,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:55,204 INFO L472 AbstractCegarLoop]: Abstraction has 304 states and 304 transitions. [2018-07-25 08:52:55,204 INFO L473 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-07-25 08:52:55,204 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 304 transitions. [2018-07-25 08:52:55,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2018-07-25 08:52:55,205 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:55,205 INFO L354 BasicCegarLoop]: trace histogram [151, 150, 1, 1] [2018-07-25 08:52:55,205 INFO L415 AbstractCegarLoop]: === Iteration 151 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:55,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1007196172, now seen corresponding path program 150 times [2018-07-25 08:52:55,205 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:55,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:55,838 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 08:52:55,838 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:55,838 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [151] total 151 [2018-07-25 08:52:55,839 INFO L451 AbstractCegarLoop]: Interpolant automaton has 153 states [2018-07-25 08:52:55,840 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants. [2018-07-25 08:52:55,841 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11628, Invalid=11628, Unknown=0, NotChecked=0, Total=23256 [2018-07-25 08:52:55,841 INFO L87 Difference]: Start difference. First operand 304 states and 304 transitions. Second operand 153 states. [2018-07-25 08:52:56,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:56,430 INFO L93 Difference]: Finished difference Result 307 states and 307 transitions. [2018-07-25 08:52:56,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2018-07-25 08:52:56,430 INFO L78 Accepts]: Start accepts. Automaton has 153 states. Word has length 303 [2018-07-25 08:52:56,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:56,431 INFO L225 Difference]: With dead ends: 307 [2018-07-25 08:52:56,431 INFO L226 Difference]: Without dead ends: 306 [2018-07-25 08:52:56,432 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11628, Invalid=11628, Unknown=0, NotChecked=0, Total=23256 [2018-07-25 08:52:56,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2018-07-25 08:52:56,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 306. [2018-07-25 08:52:56,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2018-07-25 08:52:56,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 306 transitions. [2018-07-25 08:52:56,436 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 306 transitions. Word has length 303 [2018-07-25 08:52:56,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:56,436 INFO L472 AbstractCegarLoop]: Abstraction has 306 states and 306 transitions. [2018-07-25 08:52:56,436 INFO L473 AbstractCegarLoop]: Interpolant automaton has 153 states. [2018-07-25 08:52:56,436 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 306 transitions. [2018-07-25 08:52:56,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-07-25 08:52:56,437 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:56,437 INFO L354 BasicCegarLoop]: trace histogram [152, 151, 1, 1] [2018-07-25 08:52:56,437 INFO L415 AbstractCegarLoop]: === Iteration 152 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:56,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1547880782, now seen corresponding path program 151 times [2018-07-25 08:52:56,437 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:56,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:57,134 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 08:52:57,134 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:57,134 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [152] total 152 [2018-07-25 08:52:57,135 INFO L451 AbstractCegarLoop]: Interpolant automaton has 154 states [2018-07-25 08:52:57,135 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2018-07-25 08:52:57,136 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11781, Invalid=11781, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 08:52:57,136 INFO L87 Difference]: Start difference. First operand 306 states and 306 transitions. Second operand 154 states. [2018-07-25 08:52:57,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:57,710 INFO L93 Difference]: Finished difference Result 309 states and 309 transitions. [2018-07-25 08:52:57,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2018-07-25 08:52:57,710 INFO L78 Accepts]: Start accepts. Automaton has 154 states. Word has length 305 [2018-07-25 08:52:57,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:57,711 INFO L225 Difference]: With dead ends: 309 [2018-07-25 08:52:57,712 INFO L226 Difference]: Without dead ends: 308 [2018-07-25 08:52:57,713 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11781, Invalid=11781, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 08:52:57,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2018-07-25 08:52:57,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2018-07-25 08:52:57,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2018-07-25 08:52:57,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 308 transitions. [2018-07-25 08:52:57,717 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 308 transitions. Word has length 305 [2018-07-25 08:52:57,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:57,718 INFO L472 AbstractCegarLoop]: Abstraction has 308 states and 308 transitions. [2018-07-25 08:52:57,718 INFO L473 AbstractCegarLoop]: Interpolant automaton has 154 states. [2018-07-25 08:52:57,718 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 308 transitions. [2018-07-25 08:52:57,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2018-07-25 08:52:57,719 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:57,719 INFO L354 BasicCegarLoop]: trace histogram [153, 152, 1, 1] [2018-07-25 08:52:57,720 INFO L415 AbstractCegarLoop]: === Iteration 153 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:57,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1454748176, now seen corresponding path program 152 times [2018-07-25 08:52:57,720 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:57,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:58,518 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 08:52:58,518 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:58,518 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [153] total 153 [2018-07-25 08:52:58,519 INFO L451 AbstractCegarLoop]: Interpolant automaton has 155 states [2018-07-25 08:52:58,520 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2018-07-25 08:52:58,521 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11935, Invalid=11935, Unknown=0, NotChecked=0, Total=23870 [2018-07-25 08:52:58,521 INFO L87 Difference]: Start difference. First operand 308 states and 308 transitions. Second operand 155 states. [2018-07-25 08:52:58,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:58,787 INFO L93 Difference]: Finished difference Result 311 states and 311 transitions. [2018-07-25 08:52:58,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2018-07-25 08:52:58,787 INFO L78 Accepts]: Start accepts. Automaton has 155 states. Word has length 307 [2018-07-25 08:52:58,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:58,788 INFO L225 Difference]: With dead ends: 311 [2018-07-25 08:52:58,788 INFO L226 Difference]: Without dead ends: 310 [2018-07-25 08:52:58,790 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11935, Invalid=11935, Unknown=0, NotChecked=0, Total=23870 [2018-07-25 08:52:58,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2018-07-25 08:52:58,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 310. [2018-07-25 08:52:58,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 310 states. [2018-07-25 08:52:58,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 310 transitions. [2018-07-25 08:52:58,793 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 310 transitions. Word has length 307 [2018-07-25 08:52:58,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:58,793 INFO L472 AbstractCegarLoop]: Abstraction has 310 states and 310 transitions. [2018-07-25 08:52:58,793 INFO L473 AbstractCegarLoop]: Interpolant automaton has 155 states. [2018-07-25 08:52:58,793 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 310 transitions. [2018-07-25 08:52:58,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2018-07-25 08:52:58,794 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:58,794 INFO L354 BasicCegarLoop]: trace histogram [154, 153, 1, 1] [2018-07-25 08:52:58,794 INFO L415 AbstractCegarLoop]: === Iteration 154 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:58,794 INFO L82 PathProgramCache]: Analyzing trace with hash -2146340270, now seen corresponding path program 153 times [2018-07-25 08:52:58,794 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:58,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:59,474 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 08:52:59,474 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:59,474 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [154] total 154 [2018-07-25 08:52:59,475 INFO L451 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-07-25 08:52:59,476 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-07-25 08:52:59,477 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12090, Invalid=12090, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 08:52:59,477 INFO L87 Difference]: Start difference. First operand 310 states and 310 transitions. Second operand 156 states. [2018-07-25 08:53:00,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:00,175 INFO L93 Difference]: Finished difference Result 313 states and 313 transitions. [2018-07-25 08:53:00,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2018-07-25 08:53:00,175 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 309 [2018-07-25 08:53:00,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:00,176 INFO L225 Difference]: With dead ends: 313 [2018-07-25 08:53:00,176 INFO L226 Difference]: Without dead ends: 312 [2018-07-25 08:53:00,177 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12090, Invalid=12090, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 08:53:00,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2018-07-25 08:53:00,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2018-07-25 08:53:00,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2018-07-25 08:53:00,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 312 transitions. [2018-07-25 08:53:00,180 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 312 transitions. Word has length 309 [2018-07-25 08:53:00,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:00,181 INFO L472 AbstractCegarLoop]: Abstraction has 312 states and 312 transitions. [2018-07-25 08:53:00,181 INFO L473 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-07-25 08:53:00,181 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 312 transitions. [2018-07-25 08:53:00,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2018-07-25 08:53:00,182 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:00,182 INFO L354 BasicCegarLoop]: trace histogram [155, 154, 1, 1] [2018-07-25 08:53:00,182 INFO L415 AbstractCegarLoop]: === Iteration 155 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:00,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1048696300, now seen corresponding path program 154 times [2018-07-25 08:53:00,182 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:00,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:00,876 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 08:53:00,876 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:00,877 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [155] total 155 [2018-07-25 08:53:00,877 INFO L451 AbstractCegarLoop]: Interpolant automaton has 157 states [2018-07-25 08:53:00,879 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 157 interpolants. [2018-07-25 08:53:00,880 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12246, Invalid=12246, Unknown=0, NotChecked=0, Total=24492 [2018-07-25 08:53:00,880 INFO L87 Difference]: Start difference. First operand 312 states and 312 transitions. Second operand 157 states. [2018-07-25 08:53:01,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:01,109 INFO L93 Difference]: Finished difference Result 315 states and 315 transitions. [2018-07-25 08:53:01,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2018-07-25 08:53:01,109 INFO L78 Accepts]: Start accepts. Automaton has 157 states. Word has length 311 [2018-07-25 08:53:01,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:01,110 INFO L225 Difference]: With dead ends: 315 [2018-07-25 08:53:01,110 INFO L226 Difference]: Without dead ends: 314 [2018-07-25 08:53:01,112 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12246, Invalid=12246, Unknown=0, NotChecked=0, Total=24492 [2018-07-25 08:53:01,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2018-07-25 08:53:01,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2018-07-25 08:53:01,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2018-07-25 08:53:01,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 314 transitions. [2018-07-25 08:53:01,115 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 314 transitions. Word has length 311 [2018-07-25 08:53:01,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:01,115 INFO L472 AbstractCegarLoop]: Abstraction has 314 states and 314 transitions. [2018-07-25 08:53:01,115 INFO L473 AbstractCegarLoop]: Interpolant automaton has 157 states. [2018-07-25 08:53:01,115 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 314 transitions. [2018-07-25 08:53:01,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2018-07-25 08:53:01,116 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:01,116 INFO L354 BasicCegarLoop]: trace histogram [156, 155, 1, 1] [2018-07-25 08:53:01,116 INFO L415 AbstractCegarLoop]: === Iteration 156 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:01,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1520171350, now seen corresponding path program 155 times [2018-07-25 08:53:01,117 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:01,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:01,875 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 08:53:01,876 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:01,876 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [156] total 156 [2018-07-25 08:53:01,876 INFO L451 AbstractCegarLoop]: Interpolant automaton has 158 states [2018-07-25 08:53:01,878 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2018-07-25 08:53:01,878 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12403, Invalid=12403, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 08:53:01,879 INFO L87 Difference]: Start difference. First operand 314 states and 314 transitions. Second operand 158 states. [2018-07-25 08:53:02,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:02,597 INFO L93 Difference]: Finished difference Result 317 states and 317 transitions. [2018-07-25 08:53:02,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2018-07-25 08:53:02,597 INFO L78 Accepts]: Start accepts. Automaton has 158 states. Word has length 313 [2018-07-25 08:53:02,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:02,598 INFO L225 Difference]: With dead ends: 317 [2018-07-25 08:53:02,598 INFO L226 Difference]: Without dead ends: 316 [2018-07-25 08:53:02,600 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12403, Invalid=12403, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 08:53:02,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2018-07-25 08:53:02,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 316. [2018-07-25 08:53:02,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2018-07-25 08:53:02,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 316 transitions. [2018-07-25 08:53:02,604 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 316 transitions. Word has length 313 [2018-07-25 08:53:02,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:02,605 INFO L472 AbstractCegarLoop]: Abstraction has 316 states and 316 transitions. [2018-07-25 08:53:02,605 INFO L473 AbstractCegarLoop]: Interpolant automaton has 158 states. [2018-07-25 08:53:02,605 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 316 transitions. [2018-07-25 08:53:02,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2018-07-25 08:53:02,606 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:02,606 INFO L354 BasicCegarLoop]: trace histogram [157, 156, 1, 1] [2018-07-25 08:53:02,607 INFO L415 AbstractCegarLoop]: === Iteration 157 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:02,607 INFO L82 PathProgramCache]: Analyzing trace with hash 595787800, now seen corresponding path program 156 times [2018-07-25 08:53:02,607 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:02,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:03,445 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 08:53:03,445 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:03,445 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [157] total 157 [2018-07-25 08:53:03,445 INFO L451 AbstractCegarLoop]: Interpolant automaton has 159 states [2018-07-25 08:53:03,447 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 159 interpolants. [2018-07-25 08:53:03,448 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12561, Invalid=12561, Unknown=0, NotChecked=0, Total=25122 [2018-07-25 08:53:03,448 INFO L87 Difference]: Start difference. First operand 316 states and 316 transitions. Second operand 159 states. [2018-07-25 08:53:03,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:03,815 INFO L93 Difference]: Finished difference Result 319 states and 319 transitions. [2018-07-25 08:53:03,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2018-07-25 08:53:03,816 INFO L78 Accepts]: Start accepts. Automaton has 159 states. Word has length 315 [2018-07-25 08:53:03,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:03,816 INFO L225 Difference]: With dead ends: 319 [2018-07-25 08:53:03,816 INFO L226 Difference]: Without dead ends: 318 [2018-07-25 08:53:03,818 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12561, Invalid=12561, Unknown=0, NotChecked=0, Total=25122 [2018-07-25 08:53:03,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2018-07-25 08:53:03,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 318. [2018-07-25 08:53:03,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2018-07-25 08:53:03,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 318 transitions. [2018-07-25 08:53:03,821 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 318 transitions. Word has length 315 [2018-07-25 08:53:03,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:03,822 INFO L472 AbstractCegarLoop]: Abstraction has 318 states and 318 transitions. [2018-07-25 08:53:03,822 INFO L473 AbstractCegarLoop]: Interpolant automaton has 159 states. [2018-07-25 08:53:03,822 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 318 transitions. [2018-07-25 08:53:03,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2018-07-25 08:53:03,823 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:03,823 INFO L354 BasicCegarLoop]: trace histogram [158, 157, 1, 1] [2018-07-25 08:53:03,823 INFO L415 AbstractCegarLoop]: === Iteration 158 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:03,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1321426522, now seen corresponding path program 157 times [2018-07-25 08:53:03,823 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:03,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:04,558 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 08:53:04,559 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:04,559 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [158] total 158 [2018-07-25 08:53:04,559 INFO L451 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-07-25 08:53:04,561 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-07-25 08:53:04,562 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12720, Invalid=12720, Unknown=0, NotChecked=0, Total=25440 [2018-07-25 08:53:04,562 INFO L87 Difference]: Start difference. First operand 318 states and 318 transitions. Second operand 160 states. [2018-07-25 08:53:05,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:05,311 INFO L93 Difference]: Finished difference Result 321 states and 321 transitions. [2018-07-25 08:53:05,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2018-07-25 08:53:05,311 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 317 [2018-07-25 08:53:05,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:05,312 INFO L225 Difference]: With dead ends: 321 [2018-07-25 08:53:05,312 INFO L226 Difference]: Without dead ends: 320 [2018-07-25 08:53:05,313 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12720, Invalid=12720, Unknown=0, NotChecked=0, Total=25440 [2018-07-25 08:53:05,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2018-07-25 08:53:05,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2018-07-25 08:53:05,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2018-07-25 08:53:05,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 320 transitions. [2018-07-25 08:53:05,316 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 320 transitions. Word has length 317 [2018-07-25 08:53:05,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:05,317 INFO L472 AbstractCegarLoop]: Abstraction has 320 states and 320 transitions. [2018-07-25 08:53:05,317 INFO L473 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-07-25 08:53:05,317 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 320 transitions. [2018-07-25 08:53:05,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2018-07-25 08:53:05,318 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:05,318 INFO L354 BasicCegarLoop]: trace histogram [159, 158, 1, 1] [2018-07-25 08:53:05,318 INFO L415 AbstractCegarLoop]: === Iteration 159 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:05,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1419430884, now seen corresponding path program 158 times [2018-07-25 08:53:05,318 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:05,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:06,095 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 08:53:06,096 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:06,096 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [159] total 159 [2018-07-25 08:53:06,096 INFO L451 AbstractCegarLoop]: Interpolant automaton has 161 states [2018-07-25 08:53:06,098 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2018-07-25 08:53:06,099 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12880, Invalid=12880, Unknown=0, NotChecked=0, Total=25760 [2018-07-25 08:53:06,099 INFO L87 Difference]: Start difference. First operand 320 states and 320 transitions. Second operand 161 states. [2018-07-25 08:53:06,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:06,965 INFO L93 Difference]: Finished difference Result 323 states and 323 transitions. [2018-07-25 08:53:06,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2018-07-25 08:53:06,966 INFO L78 Accepts]: Start accepts. Automaton has 161 states. Word has length 319 [2018-07-25 08:53:06,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:06,966 INFO L225 Difference]: With dead ends: 323 [2018-07-25 08:53:06,966 INFO L226 Difference]: Without dead ends: 322 [2018-07-25 08:53:06,968 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12880, Invalid=12880, Unknown=0, NotChecked=0, Total=25760 [2018-07-25 08:53:06,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2018-07-25 08:53:06,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2018-07-25 08:53:06,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2018-07-25 08:53:06,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 322 transitions. [2018-07-25 08:53:06,971 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 322 transitions. Word has length 319 [2018-07-25 08:53:06,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:06,972 INFO L472 AbstractCegarLoop]: Abstraction has 322 states and 322 transitions. [2018-07-25 08:53:06,972 INFO L473 AbstractCegarLoop]: Interpolant automaton has 161 states. [2018-07-25 08:53:06,972 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 322 transitions. [2018-07-25 08:53:06,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2018-07-25 08:53:06,972 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:06,973 INFO L354 BasicCegarLoop]: trace histogram [160, 159, 1, 1] [2018-07-25 08:53:06,973 INFO L415 AbstractCegarLoop]: === Iteration 160 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:06,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1726521694, now seen corresponding path program 159 times [2018-07-25 08:53:06,973 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:07,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:07,723 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 08:53:07,723 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:07,723 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [160] total 160 [2018-07-25 08:53:07,724 INFO L451 AbstractCegarLoop]: Interpolant automaton has 162 states [2018-07-25 08:53:07,725 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2018-07-25 08:53:07,726 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13041, Invalid=13041, Unknown=0, NotChecked=0, Total=26082 [2018-07-25 08:53:07,727 INFO L87 Difference]: Start difference. First operand 322 states and 322 transitions. Second operand 162 states. [2018-07-25 08:53:07,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:07,976 INFO L93 Difference]: Finished difference Result 325 states and 325 transitions. [2018-07-25 08:53:07,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2018-07-25 08:53:07,977 INFO L78 Accepts]: Start accepts. Automaton has 162 states. Word has length 321 [2018-07-25 08:53:07,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:07,977 INFO L225 Difference]: With dead ends: 325 [2018-07-25 08:53:07,977 INFO L226 Difference]: Without dead ends: 324 [2018-07-25 08:53:07,979 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13041, Invalid=13041, Unknown=0, NotChecked=0, Total=26082 [2018-07-25 08:53:07,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2018-07-25 08:53:07,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 324. [2018-07-25 08:53:07,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2018-07-25 08:53:07,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 324 transitions. [2018-07-25 08:53:07,982 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 324 transitions. Word has length 321 [2018-07-25 08:53:07,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:07,982 INFO L472 AbstractCegarLoop]: Abstraction has 324 states and 324 transitions. [2018-07-25 08:53:07,982 INFO L473 AbstractCegarLoop]: Interpolant automaton has 162 states. [2018-07-25 08:53:07,982 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 324 transitions. [2018-07-25 08:53:07,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2018-07-25 08:53:07,983 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:07,983 INFO L354 BasicCegarLoop]: trace histogram [161, 160, 1, 1] [2018-07-25 08:53:07,983 INFO L415 AbstractCegarLoop]: === Iteration 161 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:07,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1329972768, now seen corresponding path program 160 times [2018-07-25 08:53:07,984 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:08,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:08,771 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 08:53:08,771 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:08,771 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [161] total 161 [2018-07-25 08:53:08,772 INFO L451 AbstractCegarLoop]: Interpolant automaton has 163 states [2018-07-25 08:53:08,774 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants. [2018-07-25 08:53:08,775 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13203, Invalid=13203, Unknown=0, NotChecked=0, Total=26406 [2018-07-25 08:53:08,775 INFO L87 Difference]: Start difference. First operand 324 states and 324 transitions. Second operand 163 states. [2018-07-25 08:53:09,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:09,593 INFO L93 Difference]: Finished difference Result 327 states and 327 transitions. [2018-07-25 08:53:09,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2018-07-25 08:53:09,593 INFO L78 Accepts]: Start accepts. Automaton has 163 states. Word has length 323 [2018-07-25 08:53:09,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:09,594 INFO L225 Difference]: With dead ends: 327 [2018-07-25 08:53:09,594 INFO L226 Difference]: Without dead ends: 326 [2018-07-25 08:53:09,596 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13203, Invalid=13203, Unknown=0, NotChecked=0, Total=26406 [2018-07-25 08:53:09,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2018-07-25 08:53:09,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2018-07-25 08:53:09,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2018-07-25 08:53:09,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 326 transitions. [2018-07-25 08:53:09,599 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 326 transitions. Word has length 323 [2018-07-25 08:53:09,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:09,599 INFO L472 AbstractCegarLoop]: Abstraction has 326 states and 326 transitions. [2018-07-25 08:53:09,599 INFO L473 AbstractCegarLoop]: Interpolant automaton has 163 states. [2018-07-25 08:53:09,599 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 326 transitions. [2018-07-25 08:53:09,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2018-07-25 08:53:09,600 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:09,600 INFO L354 BasicCegarLoop]: trace histogram [162, 161, 1, 1] [2018-07-25 08:53:09,600 INFO L415 AbstractCegarLoop]: === Iteration 162 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:09,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1796423070, now seen corresponding path program 161 times [2018-07-25 08:53:09,600 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:09,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:10,366 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 08:53:10,366 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:10,366 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [162] total 162 [2018-07-25 08:53:10,367 INFO L451 AbstractCegarLoop]: Interpolant automaton has 164 states [2018-07-25 08:53:10,368 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2018-07-25 08:53:10,369 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13366, Invalid=13366, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 08:53:10,369 INFO L87 Difference]: Start difference. First operand 326 states and 326 transitions. Second operand 164 states. [2018-07-25 08:53:11,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:11,311 INFO L93 Difference]: Finished difference Result 329 states and 329 transitions. [2018-07-25 08:53:11,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2018-07-25 08:53:11,311 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 325 [2018-07-25 08:53:11,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:11,312 INFO L225 Difference]: With dead ends: 329 [2018-07-25 08:53:11,312 INFO L226 Difference]: Without dead ends: 328 [2018-07-25 08:53:11,314 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13366, Invalid=13366, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 08:53:11,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2018-07-25 08:53:11,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2018-07-25 08:53:11,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2018-07-25 08:53:11,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 328 transitions. [2018-07-25 08:53:11,317 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 328 transitions. Word has length 325 [2018-07-25 08:53:11,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:11,317 INFO L472 AbstractCegarLoop]: Abstraction has 328 states and 328 transitions. [2018-07-25 08:53:11,317 INFO L473 AbstractCegarLoop]: Interpolant automaton has 164 states. [2018-07-25 08:53:11,317 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 328 transitions. [2018-07-25 08:53:11,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2018-07-25 08:53:11,318 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:11,318 INFO L354 BasicCegarLoop]: trace histogram [163, 162, 1, 1] [2018-07-25 08:53:11,318 INFO L415 AbstractCegarLoop]: === Iteration 163 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:11,319 INFO L82 PathProgramCache]: Analyzing trace with hash 214283812, now seen corresponding path program 162 times [2018-07-25 08:53:11,319 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:11,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:12,138 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 08:53:12,139 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:12,139 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [163] total 163 [2018-07-25 08:53:12,139 INFO L451 AbstractCegarLoop]: Interpolant automaton has 165 states [2018-07-25 08:53:12,141 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 165 interpolants. [2018-07-25 08:53:12,142 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13530, Invalid=13530, Unknown=0, NotChecked=0, Total=27060 [2018-07-25 08:53:12,142 INFO L87 Difference]: Start difference. First operand 328 states and 328 transitions. Second operand 165 states. [2018-07-25 08:53:12,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:12,852 INFO L93 Difference]: Finished difference Result 331 states and 331 transitions. [2018-07-25 08:53:12,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2018-07-25 08:53:12,852 INFO L78 Accepts]: Start accepts. Automaton has 165 states. Word has length 327 [2018-07-25 08:53:12,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:12,853 INFO L225 Difference]: With dead ends: 331 [2018-07-25 08:53:12,853 INFO L226 Difference]: Without dead ends: 330 [2018-07-25 08:53:12,855 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13530, Invalid=13530, Unknown=0, NotChecked=0, Total=27060 [2018-07-25 08:53:12,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2018-07-25 08:53:12,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 330. [2018-07-25 08:53:12,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2018-07-25 08:53:12,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 330 transitions. [2018-07-25 08:53:12,858 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 330 transitions. Word has length 327 [2018-07-25 08:53:12,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:12,858 INFO L472 AbstractCegarLoop]: Abstraction has 330 states and 330 transitions. [2018-07-25 08:53:12,858 INFO L473 AbstractCegarLoop]: Interpolant automaton has 165 states. [2018-07-25 08:53:12,858 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 330 transitions. [2018-07-25 08:53:12,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2018-07-25 08:53:12,859 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:12,859 INFO L354 BasicCegarLoop]: trace histogram [164, 163, 1, 1] [2018-07-25 08:53:12,860 INFO L415 AbstractCegarLoop]: === Iteration 164 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:12,860 INFO L82 PathProgramCache]: Analyzing trace with hash -231685786, now seen corresponding path program 163 times [2018-07-25 08:53:12,860 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:13,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:13,685 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 08:53:13,685 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:13,685 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [164] total 164 [2018-07-25 08:53:13,686 INFO L451 AbstractCegarLoop]: Interpolant automaton has 166 states [2018-07-25 08:53:13,686 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2018-07-25 08:53:13,687 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13695, Invalid=13695, Unknown=0, NotChecked=0, Total=27390 [2018-07-25 08:53:13,687 INFO L87 Difference]: Start difference. First operand 330 states and 330 transitions. Second operand 166 states. [2018-07-25 08:53:13,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:13,974 INFO L93 Difference]: Finished difference Result 333 states and 333 transitions. [2018-07-25 08:53:13,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2018-07-25 08:53:13,974 INFO L78 Accepts]: Start accepts. Automaton has 166 states. Word has length 329 [2018-07-25 08:53:13,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:13,975 INFO L225 Difference]: With dead ends: 333 [2018-07-25 08:53:13,975 INFO L226 Difference]: Without dead ends: 332 [2018-07-25 08:53:13,976 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13695, Invalid=13695, Unknown=0, NotChecked=0, Total=27390 [2018-07-25 08:53:13,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2018-07-25 08:53:13,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2018-07-25 08:53:13,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2018-07-25 08:53:13,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 332 transitions. [2018-07-25 08:53:13,980 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 332 transitions. Word has length 329 [2018-07-25 08:53:13,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:13,981 INFO L472 AbstractCegarLoop]: Abstraction has 332 states and 332 transitions. [2018-07-25 08:53:13,981 INFO L473 AbstractCegarLoop]: Interpolant automaton has 166 states. [2018-07-25 08:53:13,981 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 332 transitions. [2018-07-25 08:53:13,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2018-07-25 08:53:13,982 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:13,983 INFO L354 BasicCegarLoop]: trace histogram [165, 164, 1, 1] [2018-07-25 08:53:13,983 INFO L415 AbstractCegarLoop]: === Iteration 165 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:13,983 INFO L82 PathProgramCache]: Analyzing trace with hash 688260136, now seen corresponding path program 164 times [2018-07-25 08:53:13,983 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:14,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:14,956 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 08:53:14,956 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:14,956 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [165] total 165 [2018-07-25 08:53:14,957 INFO L451 AbstractCegarLoop]: Interpolant automaton has 167 states [2018-07-25 08:53:14,959 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 167 interpolants. [2018-07-25 08:53:14,960 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13861, Invalid=13861, Unknown=0, NotChecked=0, Total=27722 [2018-07-25 08:53:14,960 INFO L87 Difference]: Start difference. First operand 332 states and 332 transitions. Second operand 167 states. [2018-07-25 08:53:15,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:15,373 INFO L93 Difference]: Finished difference Result 335 states and 335 transitions. [2018-07-25 08:53:15,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2018-07-25 08:53:15,373 INFO L78 Accepts]: Start accepts. Automaton has 167 states. Word has length 331 [2018-07-25 08:53:15,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:15,373 INFO L225 Difference]: With dead ends: 335 [2018-07-25 08:53:15,374 INFO L226 Difference]: Without dead ends: 334 [2018-07-25 08:53:15,375 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13861, Invalid=13861, Unknown=0, NotChecked=0, Total=27722 [2018-07-25 08:53:15,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2018-07-25 08:53:15,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 334. [2018-07-25 08:53:15,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2018-07-25 08:53:15,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 334 transitions. [2018-07-25 08:53:15,379 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 334 transitions. Word has length 331 [2018-07-25 08:53:15,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:15,379 INFO L472 AbstractCegarLoop]: Abstraction has 334 states and 334 transitions. [2018-07-25 08:53:15,379 INFO L473 AbstractCegarLoop]: Interpolant automaton has 167 states. [2018-07-25 08:53:15,379 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 334 transitions. [2018-07-25 08:53:15,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2018-07-25 08:53:15,380 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:15,380 INFO L354 BasicCegarLoop]: trace histogram [166, 165, 1, 1] [2018-07-25 08:53:15,380 INFO L415 AbstractCegarLoop]: === Iteration 166 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:15,381 INFO L82 PathProgramCache]: Analyzing trace with hash -6971798, now seen corresponding path program 165 times [2018-07-25 08:53:15,381 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:15,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:16,208 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 08:53:16,208 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:16,208 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [166] total 166 [2018-07-25 08:53:16,209 INFO L451 AbstractCegarLoop]: Interpolant automaton has 168 states [2018-07-25 08:53:16,211 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2018-07-25 08:53:16,213 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14028, Invalid=14028, Unknown=0, NotChecked=0, Total=28056 [2018-07-25 08:53:16,213 INFO L87 Difference]: Start difference. First operand 334 states and 334 transitions. Second operand 168 states. [2018-07-25 08:53:16,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:16,955 INFO L93 Difference]: Finished difference Result 337 states and 337 transitions. [2018-07-25 08:53:16,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2018-07-25 08:53:16,955 INFO L78 Accepts]: Start accepts. Automaton has 168 states. Word has length 333 [2018-07-25 08:53:16,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:16,956 INFO L225 Difference]: With dead ends: 337 [2018-07-25 08:53:16,956 INFO L226 Difference]: Without dead ends: 336 [2018-07-25 08:53:16,958 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14028, Invalid=14028, Unknown=0, NotChecked=0, Total=28056 [2018-07-25 08:53:16,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2018-07-25 08:53:16,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 336. [2018-07-25 08:53:16,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2018-07-25 08:53:16,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 336 transitions. [2018-07-25 08:53:16,961 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 336 transitions. Word has length 333 [2018-07-25 08:53:16,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:16,961 INFO L472 AbstractCegarLoop]: Abstraction has 336 states and 336 transitions. [2018-07-25 08:53:16,961 INFO L473 AbstractCegarLoop]: Interpolant automaton has 168 states. [2018-07-25 08:53:16,961 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 336 transitions. [2018-07-25 08:53:16,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2018-07-25 08:53:16,962 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:16,962 INFO L354 BasicCegarLoop]: trace histogram [167, 166, 1, 1] [2018-07-25 08:53:16,962 INFO L415 AbstractCegarLoop]: === Iteration 167 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:16,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1890037804, now seen corresponding path program 166 times [2018-07-25 08:53:16,963 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:17,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:17,802 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 08:53:17,802 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:17,803 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [167] total 167 [2018-07-25 08:53:17,803 INFO L451 AbstractCegarLoop]: Interpolant automaton has 169 states [2018-07-25 08:53:17,804 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 169 interpolants. [2018-07-25 08:53:17,805 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14196, Invalid=14196, Unknown=0, NotChecked=0, Total=28392 [2018-07-25 08:53:17,805 INFO L87 Difference]: Start difference. First operand 336 states and 336 transitions. Second operand 169 states. [2018-07-25 08:53:18,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:18,710 INFO L93 Difference]: Finished difference Result 339 states and 339 transitions. [2018-07-25 08:53:18,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2018-07-25 08:53:18,710 INFO L78 Accepts]: Start accepts. Automaton has 169 states. Word has length 335 [2018-07-25 08:53:18,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:18,711 INFO L225 Difference]: With dead ends: 339 [2018-07-25 08:53:18,711 INFO L226 Difference]: Without dead ends: 338 [2018-07-25 08:53:18,712 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14196, Invalid=14196, Unknown=0, NotChecked=0, Total=28392 [2018-07-25 08:53:18,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2018-07-25 08:53:18,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 338. [2018-07-25 08:53:18,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2018-07-25 08:53:18,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 338 transitions. [2018-07-25 08:53:18,716 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 338 transitions. Word has length 335 [2018-07-25 08:53:18,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:18,716 INFO L472 AbstractCegarLoop]: Abstraction has 338 states and 338 transitions. [2018-07-25 08:53:18,716 INFO L473 AbstractCegarLoop]: Interpolant automaton has 169 states. [2018-07-25 08:53:18,716 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 338 transitions. [2018-07-25 08:53:18,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2018-07-25 08:53:18,717 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:18,717 INFO L354 BasicCegarLoop]: trace histogram [168, 167, 1, 1] [2018-07-25 08:53:18,717 INFO L415 AbstractCegarLoop]: === Iteration 168 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:18,717 INFO L82 PathProgramCache]: Analyzing trace with hash -444835474, now seen corresponding path program 167 times [2018-07-25 08:53:18,717 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:18,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:19,534 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 08:53:19,534 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:19,535 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [168] total 168 [2018-07-25 08:53:19,535 INFO L451 AbstractCegarLoop]: Interpolant automaton has 170 states [2018-07-25 08:53:19,537 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants. [2018-07-25 08:53:19,538 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14365, Invalid=14365, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 08:53:19,538 INFO L87 Difference]: Start difference. First operand 338 states and 338 transitions. Second operand 170 states. [2018-07-25 08:53:20,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:20,486 INFO L93 Difference]: Finished difference Result 341 states and 341 transitions. [2018-07-25 08:53:20,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2018-07-25 08:53:20,487 INFO L78 Accepts]: Start accepts. Automaton has 170 states. Word has length 337 [2018-07-25 08:53:20,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:20,487 INFO L225 Difference]: With dead ends: 341 [2018-07-25 08:53:20,487 INFO L226 Difference]: Without dead ends: 340 [2018-07-25 08:53:20,489 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14365, Invalid=14365, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 08:53:20,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-07-25 08:53:20,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2018-07-25 08:53:20,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-07-25 08:53:20,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 340 transitions. [2018-07-25 08:53:20,493 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 340 transitions. Word has length 337 [2018-07-25 08:53:20,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:20,493 INFO L472 AbstractCegarLoop]: Abstraction has 340 states and 340 transitions. [2018-07-25 08:53:20,493 INFO L473 AbstractCegarLoop]: Interpolant automaton has 170 states. [2018-07-25 08:53:20,493 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 340 transitions. [2018-07-25 08:53:20,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2018-07-25 08:53:20,494 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:20,494 INFO L354 BasicCegarLoop]: trace histogram [169, 168, 1, 1] [2018-07-25 08:53:20,494 INFO L415 AbstractCegarLoop]: === Iteration 169 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:20,494 INFO L82 PathProgramCache]: Analyzing trace with hash 2009840176, now seen corresponding path program 168 times [2018-07-25 08:53:20,495 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:20,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:21,380 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 08:53:21,380 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:21,380 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [169] total 169 [2018-07-25 08:53:21,380 INFO L451 AbstractCegarLoop]: Interpolant automaton has 171 states [2018-07-25 08:53:21,382 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 171 interpolants. [2018-07-25 08:53:21,383 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14535, Invalid=14535, Unknown=0, NotChecked=0, Total=29070 [2018-07-25 08:53:21,384 INFO L87 Difference]: Start difference. First operand 340 states and 340 transitions. Second operand 171 states. [2018-07-25 08:53:22,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:22,372 INFO L93 Difference]: Finished difference Result 343 states and 343 transitions. [2018-07-25 08:53:22,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2018-07-25 08:53:22,372 INFO L78 Accepts]: Start accepts. Automaton has 171 states. Word has length 339 [2018-07-25 08:53:22,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:22,373 INFO L225 Difference]: With dead ends: 343 [2018-07-25 08:53:22,373 INFO L226 Difference]: Without dead ends: 342 [2018-07-25 08:53:22,374 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14535, Invalid=14535, Unknown=0, NotChecked=0, Total=29070 [2018-07-25 08:53:22,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2018-07-25 08:53:22,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 342. [2018-07-25 08:53:22,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2018-07-25 08:53:22,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 342 transitions. [2018-07-25 08:53:22,378 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 342 transitions. Word has length 339 [2018-07-25 08:53:22,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:22,378 INFO L472 AbstractCegarLoop]: Abstraction has 342 states and 342 transitions. [2018-07-25 08:53:22,378 INFO L473 AbstractCegarLoop]: Interpolant automaton has 171 states. [2018-07-25 08:53:22,378 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 342 transitions. [2018-07-25 08:53:22,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2018-07-25 08:53:22,379 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:22,379 INFO L354 BasicCegarLoop]: trace histogram [170, 169, 1, 1] [2018-07-25 08:53:22,379 INFO L415 AbstractCegarLoop]: === Iteration 170 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:22,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1278872974, now seen corresponding path program 169 times [2018-07-25 08:53:22,380 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:22,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:23,231 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 08:53:23,231 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:23,231 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [170] total 170 [2018-07-25 08:53:23,231 INFO L451 AbstractCegarLoop]: Interpolant automaton has 172 states [2018-07-25 08:53:23,233 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2018-07-25 08:53:23,235 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14706, Invalid=14706, Unknown=0, NotChecked=0, Total=29412 [2018-07-25 08:53:23,235 INFO L87 Difference]: Start difference. First operand 342 states and 342 transitions. Second operand 172 states. [2018-07-25 08:53:24,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:24,224 INFO L93 Difference]: Finished difference Result 345 states and 345 transitions. [2018-07-25 08:53:24,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2018-07-25 08:53:24,224 INFO L78 Accepts]: Start accepts. Automaton has 172 states. Word has length 341 [2018-07-25 08:53:24,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:24,225 INFO L225 Difference]: With dead ends: 345 [2018-07-25 08:53:24,225 INFO L226 Difference]: Without dead ends: 344 [2018-07-25 08:53:24,226 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14706, Invalid=14706, Unknown=0, NotChecked=0, Total=29412 [2018-07-25 08:53:24,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2018-07-25 08:53:24,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2018-07-25 08:53:24,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2018-07-25 08:53:24,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 344 transitions. [2018-07-25 08:53:24,230 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 344 transitions. Word has length 341 [2018-07-25 08:53:24,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:24,230 INFO L472 AbstractCegarLoop]: Abstraction has 344 states and 344 transitions. [2018-07-25 08:53:24,230 INFO L473 AbstractCegarLoop]: Interpolant automaton has 172 states. [2018-07-25 08:53:24,230 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 344 transitions. [2018-07-25 08:53:24,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2018-07-25 08:53:24,231 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:24,231 INFO L354 BasicCegarLoop]: trace histogram [171, 170, 1, 1] [2018-07-25 08:53:24,231 INFO L415 AbstractCegarLoop]: === Iteration 171 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:24,231 INFO L82 PathProgramCache]: Analyzing trace with hash -636280268, now seen corresponding path program 170 times [2018-07-25 08:53:24,232 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:24,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:25,091 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 08:53:25,091 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:25,091 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [171] total 171 [2018-07-25 08:53:25,092 INFO L451 AbstractCegarLoop]: Interpolant automaton has 173 states [2018-07-25 08:53:25,095 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 173 interpolants. [2018-07-25 08:53:25,097 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14878, Invalid=14878, Unknown=0, NotChecked=0, Total=29756 [2018-07-25 08:53:25,097 INFO L87 Difference]: Start difference. First operand 344 states and 344 transitions. Second operand 173 states. [2018-07-25 08:53:26,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:26,119 INFO L93 Difference]: Finished difference Result 347 states and 347 transitions. [2018-07-25 08:53:26,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2018-07-25 08:53:26,119 INFO L78 Accepts]: Start accepts. Automaton has 173 states. Word has length 343 [2018-07-25 08:53:26,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:26,120 INFO L225 Difference]: With dead ends: 347 [2018-07-25 08:53:26,120 INFO L226 Difference]: Without dead ends: 346 [2018-07-25 08:53:26,122 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14878, Invalid=14878, Unknown=0, NotChecked=0, Total=29756 [2018-07-25 08:53:26,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2018-07-25 08:53:26,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2018-07-25 08:53:26,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2018-07-25 08:53:26,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 346 transitions. [2018-07-25 08:53:26,126 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 346 transitions. Word has length 343 [2018-07-25 08:53:26,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:26,126 INFO L472 AbstractCegarLoop]: Abstraction has 346 states and 346 transitions. [2018-07-25 08:53:26,126 INFO L473 AbstractCegarLoop]: Interpolant automaton has 173 states. [2018-07-25 08:53:26,126 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 346 transitions. [2018-07-25 08:53:26,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2018-07-25 08:53:26,127 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:26,128 INFO L354 BasicCegarLoop]: trace histogram [172, 171, 1, 1] [2018-07-25 08:53:26,128 INFO L415 AbstractCegarLoop]: === Iteration 172 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:26,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1579980426, now seen corresponding path program 171 times [2018-07-25 08:53:26,128 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:26,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:27,059 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 08:53:27,060 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:27,060 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [172] total 172 [2018-07-25 08:53:27,060 INFO L451 AbstractCegarLoop]: Interpolant automaton has 174 states [2018-07-25 08:53:27,062 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 174 interpolants. [2018-07-25 08:53:27,062 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15051, Invalid=15051, Unknown=0, NotChecked=0, Total=30102 [2018-07-25 08:53:27,063 INFO L87 Difference]: Start difference. First operand 346 states and 346 transitions. Second operand 174 states. [2018-07-25 08:53:27,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:27,744 INFO L93 Difference]: Finished difference Result 349 states and 349 transitions. [2018-07-25 08:53:27,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2018-07-25 08:53:27,744 INFO L78 Accepts]: Start accepts. Automaton has 174 states. Word has length 345 [2018-07-25 08:53:27,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:27,745 INFO L225 Difference]: With dead ends: 349 [2018-07-25 08:53:27,745 INFO L226 Difference]: Without dead ends: 348 [2018-07-25 08:53:27,746 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15051, Invalid=15051, Unknown=0, NotChecked=0, Total=30102 [2018-07-25 08:53:27,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2018-07-25 08:53:27,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 348. [2018-07-25 08:53:27,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2018-07-25 08:53:27,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 348 transitions. [2018-07-25 08:53:27,751 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 348 transitions. Word has length 345 [2018-07-25 08:53:27,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:27,752 INFO L472 AbstractCegarLoop]: Abstraction has 348 states and 348 transitions. [2018-07-25 08:53:27,752 INFO L473 AbstractCegarLoop]: Interpolant automaton has 174 states. [2018-07-25 08:53:27,752 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 348 transitions. [2018-07-25 08:53:27,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2018-07-25 08:53:27,753 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:27,753 INFO L354 BasicCegarLoop]: trace histogram [173, 172, 1, 1] [2018-07-25 08:53:27,754 INFO L415 AbstractCegarLoop]: === Iteration 173 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:27,754 INFO L82 PathProgramCache]: Analyzing trace with hash 2057234488, now seen corresponding path program 172 times [2018-07-25 08:53:27,754 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:28,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:28,748 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 08:53:28,748 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:28,749 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [173] total 173 [2018-07-25 08:53:28,749 INFO L451 AbstractCegarLoop]: Interpolant automaton has 175 states [2018-07-25 08:53:28,751 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 175 interpolants. [2018-07-25 08:53:28,752 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15225, Invalid=15225, Unknown=0, NotChecked=0, Total=30450 [2018-07-25 08:53:28,752 INFO L87 Difference]: Start difference. First operand 348 states and 348 transitions. Second operand 175 states. [2018-07-25 08:53:29,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:29,142 INFO L93 Difference]: Finished difference Result 351 states and 351 transitions. [2018-07-25 08:53:29,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2018-07-25 08:53:29,142 INFO L78 Accepts]: Start accepts. Automaton has 175 states. Word has length 347 [2018-07-25 08:53:29,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:29,142 INFO L225 Difference]: With dead ends: 351 [2018-07-25 08:53:29,142 INFO L226 Difference]: Without dead ends: 350 [2018-07-25 08:53:29,144 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15225, Invalid=15225, Unknown=0, NotChecked=0, Total=30450 [2018-07-25 08:53:29,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2018-07-25 08:53:29,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 350. [2018-07-25 08:53:29,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2018-07-25 08:53:29,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 350 transitions. [2018-07-25 08:53:29,148 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 350 transitions. Word has length 347 [2018-07-25 08:53:29,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:29,148 INFO L472 AbstractCegarLoop]: Abstraction has 350 states and 350 transitions. [2018-07-25 08:53:29,148 INFO L473 AbstractCegarLoop]: Interpolant automaton has 175 states. [2018-07-25 08:53:29,148 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 350 transitions. [2018-07-25 08:53:29,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2018-07-25 08:53:29,149 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:29,149 INFO L354 BasicCegarLoop]: trace histogram [174, 173, 1, 1] [2018-07-25 08:53:29,149 INFO L415 AbstractCegarLoop]: === Iteration 174 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:29,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1317387898, now seen corresponding path program 173 times [2018-07-25 08:53:29,150 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:29,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:30,051 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 08:53:30,052 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:30,052 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [174] total 174 [2018-07-25 08:53:30,052 INFO L451 AbstractCegarLoop]: Interpolant automaton has 176 states [2018-07-25 08:53:30,054 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2018-07-25 08:53:30,056 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15400, Invalid=15400, Unknown=0, NotChecked=0, Total=30800 [2018-07-25 08:53:30,056 INFO L87 Difference]: Start difference. First operand 350 states and 350 transitions. Second operand 176 states. [2018-07-25 08:53:30,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:30,489 INFO L93 Difference]: Finished difference Result 353 states and 353 transitions. [2018-07-25 08:53:30,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2018-07-25 08:53:30,489 INFO L78 Accepts]: Start accepts. Automaton has 176 states. Word has length 349 [2018-07-25 08:53:30,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:30,490 INFO L225 Difference]: With dead ends: 353 [2018-07-25 08:53:30,490 INFO L226 Difference]: Without dead ends: 352 [2018-07-25 08:53:30,492 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15400, Invalid=15400, Unknown=0, NotChecked=0, Total=30800 [2018-07-25 08:53:30,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2018-07-25 08:53:30,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 352. [2018-07-25 08:53:30,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2018-07-25 08:53:30,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 352 transitions. [2018-07-25 08:53:30,497 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 352 transitions. Word has length 349 [2018-07-25 08:53:30,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:30,497 INFO L472 AbstractCegarLoop]: Abstraction has 352 states and 352 transitions. [2018-07-25 08:53:30,497 INFO L473 AbstractCegarLoop]: Interpolant automaton has 176 states. [2018-07-25 08:53:30,497 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 352 transitions. [2018-07-25 08:53:30,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2018-07-25 08:53:30,499 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:30,499 INFO L354 BasicCegarLoop]: trace histogram [175, 174, 1, 1] [2018-07-25 08:53:30,499 INFO L415 AbstractCegarLoop]: === Iteration 175 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:30,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1005581252, now seen corresponding path program 174 times [2018-07-25 08:53:30,499 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:30,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:31,421 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 08:53:31,421 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:31,421 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [175] total 175 [2018-07-25 08:53:31,422 INFO L451 AbstractCegarLoop]: Interpolant automaton has 177 states [2018-07-25 08:53:31,424 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 177 interpolants. [2018-07-25 08:53:31,425 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15576, Invalid=15576, Unknown=0, NotChecked=0, Total=31152 [2018-07-25 08:53:31,426 INFO L87 Difference]: Start difference. First operand 352 states and 352 transitions. Second operand 177 states. [2018-07-25 08:53:32,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:32,494 INFO L93 Difference]: Finished difference Result 355 states and 355 transitions. [2018-07-25 08:53:32,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2018-07-25 08:53:32,495 INFO L78 Accepts]: Start accepts. Automaton has 177 states. Word has length 351 [2018-07-25 08:53:32,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:32,495 INFO L225 Difference]: With dead ends: 355 [2018-07-25 08:53:32,495 INFO L226 Difference]: Without dead ends: 354 [2018-07-25 08:53:32,497 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15576, Invalid=15576, Unknown=0, NotChecked=0, Total=31152 [2018-07-25 08:53:32,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2018-07-25 08:53:32,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 354. [2018-07-25 08:53:32,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2018-07-25 08:53:32,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 354 transitions. [2018-07-25 08:53:32,500 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 354 transitions. Word has length 351 [2018-07-25 08:53:32,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:32,501 INFO L472 AbstractCegarLoop]: Abstraction has 354 states and 354 transitions. [2018-07-25 08:53:32,501 INFO L473 AbstractCegarLoop]: Interpolant automaton has 177 states. [2018-07-25 08:53:32,501 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 354 transitions. [2018-07-25 08:53:32,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2018-07-25 08:53:32,502 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:32,502 INFO L354 BasicCegarLoop]: trace histogram [176, 175, 1, 1] [2018-07-25 08:53:32,502 INFO L415 AbstractCegarLoop]: === Iteration 176 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:32,502 INFO L82 PathProgramCache]: Analyzing trace with hash 4059518, now seen corresponding path program 175 times [2018-07-25 08:53:32,502 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:32,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:33,459 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 08:53:33,459 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:33,460 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [176] total 176 [2018-07-25 08:53:33,460 INFO L451 AbstractCegarLoop]: Interpolant automaton has 178 states [2018-07-25 08:53:33,462 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 178 interpolants. [2018-07-25 08:53:33,463 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15753, Invalid=15753, Unknown=0, NotChecked=0, Total=31506 [2018-07-25 08:53:33,464 INFO L87 Difference]: Start difference. First operand 354 states and 354 transitions. Second operand 178 states. [2018-07-25 08:53:34,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:34,761 INFO L93 Difference]: Finished difference Result 357 states and 357 transitions. [2018-07-25 08:53:34,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2018-07-25 08:53:34,761 INFO L78 Accepts]: Start accepts. Automaton has 178 states. Word has length 353 [2018-07-25 08:53:34,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:34,762 INFO L225 Difference]: With dead ends: 357 [2018-07-25 08:53:34,762 INFO L226 Difference]: Without dead ends: 356 [2018-07-25 08:53:34,763 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15753, Invalid=15753, Unknown=0, NotChecked=0, Total=31506 [2018-07-25 08:53:34,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-07-25 08:53:34,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-07-25 08:53:34,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-07-25 08:53:34,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 356 transitions. [2018-07-25 08:53:34,767 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 356 transitions. Word has length 353 [2018-07-25 08:53:34,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:34,767 INFO L472 AbstractCegarLoop]: Abstraction has 356 states and 356 transitions. [2018-07-25 08:53:34,767 INFO L473 AbstractCegarLoop]: Interpolant automaton has 178 states. [2018-07-25 08:53:34,767 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 356 transitions. [2018-07-25 08:53:34,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2018-07-25 08:53:34,768 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:34,768 INFO L354 BasicCegarLoop]: trace histogram [177, 176, 1, 1] [2018-07-25 08:53:34,768 INFO L415 AbstractCegarLoop]: === Iteration 177 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:34,768 INFO L82 PathProgramCache]: Analyzing trace with hash -393769408, now seen corresponding path program 176 times [2018-07-25 08:53:34,769 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:34,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:35,728 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 08:53:35,728 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:35,728 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [177] total 177 [2018-07-25 08:53:35,728 INFO L451 AbstractCegarLoop]: Interpolant automaton has 179 states [2018-07-25 08:53:35,730 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 179 interpolants. [2018-07-25 08:53:35,731 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15931, Invalid=15931, Unknown=0, NotChecked=0, Total=31862 [2018-07-25 08:53:35,731 INFO L87 Difference]: Start difference. First operand 356 states and 356 transitions. Second operand 179 states. [2018-07-25 08:53:36,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:36,519 INFO L93 Difference]: Finished difference Result 359 states and 359 transitions. [2018-07-25 08:53:36,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2018-07-25 08:53:36,519 INFO L78 Accepts]: Start accepts. Automaton has 179 states. Word has length 355 [2018-07-25 08:53:36,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:36,519 INFO L225 Difference]: With dead ends: 359 [2018-07-25 08:53:36,519 INFO L226 Difference]: Without dead ends: 358 [2018-07-25 08:53:36,521 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15931, Invalid=15931, Unknown=0, NotChecked=0, Total=31862 [2018-07-25 08:53:36,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2018-07-25 08:53:36,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2018-07-25 08:53:36,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2018-07-25 08:53:36,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 358 transitions. [2018-07-25 08:53:36,524 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 358 transitions. Word has length 355 [2018-07-25 08:53:36,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:36,524 INFO L472 AbstractCegarLoop]: Abstraction has 358 states and 358 transitions. [2018-07-25 08:53:36,524 INFO L473 AbstractCegarLoop]: Interpolant automaton has 179 states. [2018-07-25 08:53:36,524 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 358 transitions. [2018-07-25 08:53:36,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2018-07-25 08:53:36,525 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:36,525 INFO L354 BasicCegarLoop]: trace histogram [178, 177, 1, 1] [2018-07-25 08:53:36,526 INFO L415 AbstractCegarLoop]: === Iteration 178 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:36,526 INFO L82 PathProgramCache]: Analyzing trace with hash -455277950, now seen corresponding path program 177 times [2018-07-25 08:53:36,526 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:36,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:37,541 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 08:53:37,541 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:37,541 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [178] total 178 [2018-07-25 08:53:37,542 INFO L451 AbstractCegarLoop]: Interpolant automaton has 180 states [2018-07-25 08:53:37,544 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2018-07-25 08:53:37,547 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16110, Invalid=16110, Unknown=0, NotChecked=0, Total=32220 [2018-07-25 08:53:37,547 INFO L87 Difference]: Start difference. First operand 358 states and 358 transitions. Second operand 180 states. [2018-07-25 08:53:38,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:38,026 INFO L93 Difference]: Finished difference Result 361 states and 361 transitions. [2018-07-25 08:53:38,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2018-07-25 08:53:38,026 INFO L78 Accepts]: Start accepts. Automaton has 180 states. Word has length 357 [2018-07-25 08:53:38,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:38,027 INFO L225 Difference]: With dead ends: 361 [2018-07-25 08:53:38,027 INFO L226 Difference]: Without dead ends: 360 [2018-07-25 08:53:38,029 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16110, Invalid=16110, Unknown=0, NotChecked=0, Total=32220 [2018-07-25 08:53:38,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2018-07-25 08:53:38,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2018-07-25 08:53:38,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360 states. [2018-07-25 08:53:38,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 360 transitions. [2018-07-25 08:53:38,033 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 360 transitions. Word has length 357 [2018-07-25 08:53:38,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:38,033 INFO L472 AbstractCegarLoop]: Abstraction has 360 states and 360 transitions. [2018-07-25 08:53:38,033 INFO L473 AbstractCegarLoop]: Interpolant automaton has 180 states. [2018-07-25 08:53:38,033 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 360 transitions. [2018-07-25 08:53:38,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2018-07-25 08:53:38,034 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:38,034 INFO L354 BasicCegarLoop]: trace histogram [179, 178, 1, 1] [2018-07-25 08:53:38,034 INFO L415 AbstractCegarLoop]: === Iteration 179 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:38,034 INFO L82 PathProgramCache]: Analyzing trace with hash 564555332, now seen corresponding path program 178 times [2018-07-25 08:53:38,035 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:38,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:39,048 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 08:53:39,048 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:39,048 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [179] total 179 [2018-07-25 08:53:39,049 INFO L451 AbstractCegarLoop]: Interpolant automaton has 181 states [2018-07-25 08:53:39,050 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 181 interpolants. [2018-07-25 08:53:39,051 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16290, Invalid=16290, Unknown=0, NotChecked=0, Total=32580 [2018-07-25 08:53:39,051 INFO L87 Difference]: Start difference. First operand 360 states and 360 transitions. Second operand 181 states. [2018-07-25 08:53:40,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:40,323 INFO L93 Difference]: Finished difference Result 363 states and 363 transitions. [2018-07-25 08:53:40,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2018-07-25 08:53:40,323 INFO L78 Accepts]: Start accepts. Automaton has 181 states. Word has length 359 [2018-07-25 08:53:40,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:40,324 INFO L225 Difference]: With dead ends: 363 [2018-07-25 08:53:40,324 INFO L226 Difference]: Without dead ends: 362 [2018-07-25 08:53:40,325 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16290, Invalid=16290, Unknown=0, NotChecked=0, Total=32580 [2018-07-25 08:53:40,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2018-07-25 08:53:40,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2018-07-25 08:53:40,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2018-07-25 08:53:40,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 362 transitions. [2018-07-25 08:53:40,328 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 362 transitions. Word has length 359 [2018-07-25 08:53:40,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:40,328 INFO L472 AbstractCegarLoop]: Abstraction has 362 states and 362 transitions. [2018-07-25 08:53:40,328 INFO L473 AbstractCegarLoop]: Interpolant automaton has 181 states. [2018-07-25 08:53:40,328 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 362 transitions. [2018-07-25 08:53:40,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2018-07-25 08:53:40,329 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:40,329 INFO L354 BasicCegarLoop]: trace histogram [180, 179, 1, 1] [2018-07-25 08:53:40,330 INFO L415 AbstractCegarLoop]: === Iteration 180 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:40,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1371795846, now seen corresponding path program 179 times [2018-07-25 08:53:40,330 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:40,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:41,309 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 08:53:41,309 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:41,309 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [180] total 180 [2018-07-25 08:53:41,309 INFO L451 AbstractCegarLoop]: Interpolant automaton has 182 states [2018-07-25 08:53:41,312 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 182 interpolants. [2018-07-25 08:53:41,313 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16471, Invalid=16471, Unknown=0, NotChecked=0, Total=32942 [2018-07-25 08:53:41,313 INFO L87 Difference]: Start difference. First operand 362 states and 362 transitions. Second operand 182 states. [2018-07-25 08:53:42,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:42,120 INFO L93 Difference]: Finished difference Result 365 states and 365 transitions. [2018-07-25 08:53:42,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2018-07-25 08:53:42,120 INFO L78 Accepts]: Start accepts. Automaton has 182 states. Word has length 361 [2018-07-25 08:53:42,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:42,121 INFO L225 Difference]: With dead ends: 365 [2018-07-25 08:53:42,121 INFO L226 Difference]: Without dead ends: 364 [2018-07-25 08:53:42,123 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16471, Invalid=16471, Unknown=0, NotChecked=0, Total=32942 [2018-07-25 08:53:42,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2018-07-25 08:53:42,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2018-07-25 08:53:42,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2018-07-25 08:53:42,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 364 transitions. [2018-07-25 08:53:42,128 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 364 transitions. Word has length 361 [2018-07-25 08:53:42,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:42,128 INFO L472 AbstractCegarLoop]: Abstraction has 364 states and 364 transitions. [2018-07-25 08:53:42,129 INFO L473 AbstractCegarLoop]: Interpolant automaton has 182 states. [2018-07-25 08:53:42,129 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 364 transitions. [2018-07-25 08:53:42,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2018-07-25 08:53:42,130 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:42,130 INFO L354 BasicCegarLoop]: trace histogram [181, 180, 1, 1] [2018-07-25 08:53:42,130 INFO L415 AbstractCegarLoop]: === Iteration 181 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:42,130 INFO L82 PathProgramCache]: Analyzing trace with hash -259150776, now seen corresponding path program 180 times [2018-07-25 08:53:42,131 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:42,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:43,158 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 08:53:43,158 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:43,158 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [181] total 181 [2018-07-25 08:53:43,158 INFO L451 AbstractCegarLoop]: Interpolant automaton has 183 states [2018-07-25 08:53:43,161 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 183 interpolants. [2018-07-25 08:53:43,162 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16653, Invalid=16653, Unknown=0, NotChecked=0, Total=33306 [2018-07-25 08:53:43,162 INFO L87 Difference]: Start difference. First operand 364 states and 364 transitions. Second operand 183 states. [2018-07-25 08:53:44,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:44,027 INFO L93 Difference]: Finished difference Result 367 states and 367 transitions. [2018-07-25 08:53:44,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2018-07-25 08:53:44,027 INFO L78 Accepts]: Start accepts. Automaton has 183 states. Word has length 363 [2018-07-25 08:53:44,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:44,028 INFO L225 Difference]: With dead ends: 367 [2018-07-25 08:53:44,028 INFO L226 Difference]: Without dead ends: 366 [2018-07-25 08:53:44,030 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16653, Invalid=16653, Unknown=0, NotChecked=0, Total=33306 [2018-07-25 08:53:44,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2018-07-25 08:53:44,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 366. [2018-07-25 08:53:44,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2018-07-25 08:53:44,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 366 transitions. [2018-07-25 08:53:44,033 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 366 transitions. Word has length 363 [2018-07-25 08:53:44,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:44,033 INFO L472 AbstractCegarLoop]: Abstraction has 366 states and 366 transitions. [2018-07-25 08:53:44,033 INFO L473 AbstractCegarLoop]: Interpolant automaton has 183 states. [2018-07-25 08:53:44,033 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 366 transitions. [2018-07-25 08:53:44,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2018-07-25 08:53:44,034 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:44,034 INFO L354 BasicCegarLoop]: trace histogram [182, 181, 1, 1] [2018-07-25 08:53:44,035 INFO L415 AbstractCegarLoop]: === Iteration 182 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:44,035 INFO L82 PathProgramCache]: Analyzing trace with hash 64208522, now seen corresponding path program 181 times [2018-07-25 08:53:44,035 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:44,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:45,022 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 08:53:45,022 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:45,022 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [182] total 182 [2018-07-25 08:53:45,023 INFO L451 AbstractCegarLoop]: Interpolant automaton has 184 states [2018-07-25 08:53:45,025 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2018-07-25 08:53:45,027 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2018-07-25 08:53:45,027 INFO L87 Difference]: Start difference. First operand 366 states and 366 transitions. Second operand 184 states. [2018-07-25 08:53:46,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:46,344 INFO L93 Difference]: Finished difference Result 369 states and 369 transitions. [2018-07-25 08:53:46,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2018-07-25 08:53:46,344 INFO L78 Accepts]: Start accepts. Automaton has 184 states. Word has length 365 [2018-07-25 08:53:46,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:46,344 INFO L225 Difference]: With dead ends: 369 [2018-07-25 08:53:46,344 INFO L226 Difference]: Without dead ends: 368 [2018-07-25 08:53:46,346 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2018-07-25 08:53:46,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2018-07-25 08:53:46,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 368. [2018-07-25 08:53:46,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2018-07-25 08:53:46,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 368 transitions. [2018-07-25 08:53:46,350 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 368 transitions. Word has length 365 [2018-07-25 08:53:46,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:46,350 INFO L472 AbstractCegarLoop]: Abstraction has 368 states and 368 transitions. [2018-07-25 08:53:46,350 INFO L473 AbstractCegarLoop]: Interpolant automaton has 184 states. [2018-07-25 08:53:46,350 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 368 transitions. [2018-07-25 08:53:46,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2018-07-25 08:53:46,351 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:46,351 INFO L354 BasicCegarLoop]: trace histogram [183, 182, 1, 1] [2018-07-25 08:53:46,352 INFO L415 AbstractCegarLoop]: === Iteration 183 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:46,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1574848588, now seen corresponding path program 182 times [2018-07-25 08:53:46,352 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:46,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:47,407 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 08:53:47,407 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:47,408 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [183] total 183 [2018-07-25 08:53:47,408 INFO L451 AbstractCegarLoop]: Interpolant automaton has 185 states [2018-07-25 08:53:47,410 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 185 interpolants. [2018-07-25 08:53:47,412 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17020, Invalid=17020, Unknown=0, NotChecked=0, Total=34040 [2018-07-25 08:53:47,412 INFO L87 Difference]: Start difference. First operand 368 states and 368 transitions. Second operand 185 states. [2018-07-25 08:53:48,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:48,032 INFO L93 Difference]: Finished difference Result 371 states and 371 transitions. [2018-07-25 08:53:48,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2018-07-25 08:53:48,033 INFO L78 Accepts]: Start accepts. Automaton has 185 states. Word has length 367 [2018-07-25 08:53:48,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:48,033 INFO L225 Difference]: With dead ends: 371 [2018-07-25 08:53:48,033 INFO L226 Difference]: Without dead ends: 370 [2018-07-25 08:53:48,035 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17020, Invalid=17020, Unknown=0, NotChecked=0, Total=34040 [2018-07-25 08:53:48,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2018-07-25 08:53:48,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 370. [2018-07-25 08:53:48,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 370 states. [2018-07-25 08:53:48,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 370 transitions. [2018-07-25 08:53:48,039 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 370 transitions. Word has length 367 [2018-07-25 08:53:48,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:48,039 INFO L472 AbstractCegarLoop]: Abstraction has 370 states and 370 transitions. [2018-07-25 08:53:48,039 INFO L473 AbstractCegarLoop]: Interpolant automaton has 185 states. [2018-07-25 08:53:48,039 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 370 transitions. [2018-07-25 08:53:48,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2018-07-25 08:53:48,040 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:48,040 INFO L354 BasicCegarLoop]: trace histogram [184, 183, 1, 1] [2018-07-25 08:53:48,041 INFO L415 AbstractCegarLoop]: === Iteration 184 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:48,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1601005966, now seen corresponding path program 183 times [2018-07-25 08:53:48,041 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:48,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:49,115 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 08:53:49,115 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:49,115 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [184] total 184 [2018-07-25 08:53:49,115 INFO L451 AbstractCegarLoop]: Interpolant automaton has 186 states [2018-07-25 08:53:49,118 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 186 interpolants. [2018-07-25 08:53:49,119 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17205, Invalid=17205, Unknown=0, NotChecked=0, Total=34410 [2018-07-25 08:53:49,119 INFO L87 Difference]: Start difference. First operand 370 states and 370 transitions. Second operand 186 states. [2018-07-25 08:53:50,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:50,505 INFO L93 Difference]: Finished difference Result 373 states and 373 transitions. [2018-07-25 08:53:50,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2018-07-25 08:53:50,505 INFO L78 Accepts]: Start accepts. Automaton has 186 states. Word has length 369 [2018-07-25 08:53:50,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:50,506 INFO L225 Difference]: With dead ends: 373 [2018-07-25 08:53:50,506 INFO L226 Difference]: Without dead ends: 372 [2018-07-25 08:53:50,508 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17205, Invalid=17205, Unknown=0, NotChecked=0, Total=34410 [2018-07-25 08:53:50,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2018-07-25 08:53:50,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 372. [2018-07-25 08:53:50,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2018-07-25 08:53:50,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 372 transitions. [2018-07-25 08:53:50,512 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 372 transitions. Word has length 369 [2018-07-25 08:53:50,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:50,512 INFO L472 AbstractCegarLoop]: Abstraction has 372 states and 372 transitions. [2018-07-25 08:53:50,512 INFO L473 AbstractCegarLoop]: Interpolant automaton has 186 states. [2018-07-25 08:53:50,513 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 372 transitions. [2018-07-25 08:53:50,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2018-07-25 08:53:50,514 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:50,514 INFO L354 BasicCegarLoop]: trace histogram [185, 184, 1, 1] [2018-07-25 08:53:50,514 INFO L415 AbstractCegarLoop]: === Iteration 185 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:50,514 INFO L82 PathProgramCache]: Analyzing trace with hash 968442448, now seen corresponding path program 184 times [2018-07-25 08:53:50,514 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:50,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:51,626 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 08:53:51,627 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:51,627 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [185] total 185 [2018-07-25 08:53:51,627 INFO L451 AbstractCegarLoop]: Interpolant automaton has 187 states [2018-07-25 08:53:51,630 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 187 interpolants. [2018-07-25 08:53:51,632 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17391, Invalid=17391, Unknown=0, NotChecked=0, Total=34782 [2018-07-25 08:53:51,632 INFO L87 Difference]: Start difference. First operand 372 states and 372 transitions. Second operand 187 states. [2018-07-25 08:53:52,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:52,486 INFO L93 Difference]: Finished difference Result 375 states and 375 transitions. [2018-07-25 08:53:52,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2018-07-25 08:53:52,486 INFO L78 Accepts]: Start accepts. Automaton has 187 states. Word has length 371 [2018-07-25 08:53:52,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:52,487 INFO L225 Difference]: With dead ends: 375 [2018-07-25 08:53:52,487 INFO L226 Difference]: Without dead ends: 374 [2018-07-25 08:53:52,489 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17391, Invalid=17391, Unknown=0, NotChecked=0, Total=34782 [2018-07-25 08:53:52,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2018-07-25 08:53:52,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2018-07-25 08:53:52,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 374 states. [2018-07-25 08:53:52,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 374 transitions. [2018-07-25 08:53:52,492 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 374 transitions. Word has length 371 [2018-07-25 08:53:52,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:52,492 INFO L472 AbstractCegarLoop]: Abstraction has 374 states and 374 transitions. [2018-07-25 08:53:52,493 INFO L473 AbstractCegarLoop]: Interpolant automaton has 187 states. [2018-07-25 08:53:52,493 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 374 transitions. [2018-07-25 08:53:52,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2018-07-25 08:53:52,494 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:52,494 INFO L354 BasicCegarLoop]: trace histogram [186, 185, 1, 1] [2018-07-25 08:53:52,494 INFO L415 AbstractCegarLoop]: === Iteration 186 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:52,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1334709614, now seen corresponding path program 185 times [2018-07-25 08:53:52,494 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:52,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:53,600 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 08:53:53,601 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:53,601 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [186] total 186 [2018-07-25 08:53:53,601 INFO L451 AbstractCegarLoop]: Interpolant automaton has 188 states [2018-07-25 08:53:53,603 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2018-07-25 08:53:53,604 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17578, Invalid=17578, Unknown=0, NotChecked=0, Total=35156 [2018-07-25 08:53:53,605 INFO L87 Difference]: Start difference. First operand 374 states and 374 transitions. Second operand 188 states. [2018-07-25 08:53:54,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:54,527 INFO L93 Difference]: Finished difference Result 377 states and 377 transitions. [2018-07-25 08:53:54,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2018-07-25 08:53:54,527 INFO L78 Accepts]: Start accepts. Automaton has 188 states. Word has length 373 [2018-07-25 08:53:54,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:54,528 INFO L225 Difference]: With dead ends: 377 [2018-07-25 08:53:54,528 INFO L226 Difference]: Without dead ends: 376 [2018-07-25 08:53:54,530 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17578, Invalid=17578, Unknown=0, NotChecked=0, Total=35156 [2018-07-25 08:53:54,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2018-07-25 08:53:54,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2018-07-25 08:53:54,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2018-07-25 08:53:54,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 376 transitions. [2018-07-25 08:53:54,533 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 376 transitions. Word has length 373 [2018-07-25 08:53:54,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:54,534 INFO L472 AbstractCegarLoop]: Abstraction has 376 states and 376 transitions. [2018-07-25 08:53:54,534 INFO L473 AbstractCegarLoop]: Interpolant automaton has 188 states. [2018-07-25 08:53:54,534 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 376 transitions. [2018-07-25 08:53:54,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2018-07-25 08:53:54,535 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:54,535 INFO L354 BasicCegarLoop]: trace histogram [187, 186, 1, 1] [2018-07-25 08:53:54,535 INFO L415 AbstractCegarLoop]: === Iteration 187 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:54,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1539283540, now seen corresponding path program 186 times [2018-07-25 08:53:54,535 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:54,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:55,639 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 08:53:55,639 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:55,639 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [187] total 187 [2018-07-25 08:53:55,640 INFO L451 AbstractCegarLoop]: Interpolant automaton has 189 states [2018-07-25 08:53:55,642 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 189 interpolants. [2018-07-25 08:53:55,643 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17766, Invalid=17766, Unknown=0, NotChecked=0, Total=35532 [2018-07-25 08:53:55,643 INFO L87 Difference]: Start difference. First operand 376 states and 376 transitions. Second operand 189 states. [2018-07-25 08:53:57,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:57,281 INFO L93 Difference]: Finished difference Result 379 states and 379 transitions. [2018-07-25 08:53:57,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2018-07-25 08:53:57,281 INFO L78 Accepts]: Start accepts. Automaton has 189 states. Word has length 375 [2018-07-25 08:53:57,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:57,282 INFO L225 Difference]: With dead ends: 379 [2018-07-25 08:53:57,282 INFO L226 Difference]: Without dead ends: 378 [2018-07-25 08:53:57,284 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17766, Invalid=17766, Unknown=0, NotChecked=0, Total=35532 [2018-07-25 08:53:57,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2018-07-25 08:53:57,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 378. [2018-07-25 08:53:57,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2018-07-25 08:53:57,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 378 transitions. [2018-07-25 08:53:57,288 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 378 transitions. Word has length 375 [2018-07-25 08:53:57,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:57,288 INFO L472 AbstractCegarLoop]: Abstraction has 378 states and 378 transitions. [2018-07-25 08:53:57,288 INFO L473 AbstractCegarLoop]: Interpolant automaton has 189 states. [2018-07-25 08:53:57,288 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 378 transitions. [2018-07-25 08:53:57,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2018-07-25 08:53:57,289 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:57,289 INFO L354 BasicCegarLoop]: trace histogram [188, 187, 1, 1] [2018-07-25 08:53:57,290 INFO L415 AbstractCegarLoop]: === Iteration 188 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:57,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1782733206, now seen corresponding path program 187 times [2018-07-25 08:53:57,290 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:57,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:58,407 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 08:53:58,408 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:58,408 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [188] total 188 [2018-07-25 08:53:58,408 INFO L451 AbstractCegarLoop]: Interpolant automaton has 190 states [2018-07-25 08:53:58,411 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2018-07-25 08:53:58,412 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17955, Invalid=17955, Unknown=0, NotChecked=0, Total=35910 [2018-07-25 08:53:58,412 INFO L87 Difference]: Start difference. First operand 378 states and 378 transitions. Second operand 190 states. [2018-07-25 08:53:58,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:58,863 INFO L93 Difference]: Finished difference Result 381 states and 381 transitions. [2018-07-25 08:53:58,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2018-07-25 08:53:58,863 INFO L78 Accepts]: Start accepts. Automaton has 190 states. Word has length 377 [2018-07-25 08:53:58,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:58,863 INFO L225 Difference]: With dead ends: 381 [2018-07-25 08:53:58,864 INFO L226 Difference]: Without dead ends: 380 [2018-07-25 08:53:58,865 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17955, Invalid=17955, Unknown=0, NotChecked=0, Total=35910 [2018-07-25 08:53:58,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2018-07-25 08:53:58,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2018-07-25 08:53:58,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2018-07-25 08:53:58,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 380 transitions. [2018-07-25 08:53:58,869 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 380 transitions. Word has length 377 [2018-07-25 08:53:58,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:58,869 INFO L472 AbstractCegarLoop]: Abstraction has 380 states and 380 transitions. [2018-07-25 08:53:58,869 INFO L473 AbstractCegarLoop]: Interpolant automaton has 190 states. [2018-07-25 08:53:58,869 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 380 transitions. [2018-07-25 08:53:58,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2018-07-25 08:53:58,871 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:58,871 INFO L354 BasicCegarLoop]: trace histogram [189, 188, 1, 1] [2018-07-25 08:53:58,871 INFO L415 AbstractCegarLoop]: === Iteration 189 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:58,871 INFO L82 PathProgramCache]: Analyzing trace with hash -485339048, now seen corresponding path program 188 times [2018-07-25 08:53:58,872 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:59,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:59,992 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 08:53:59,992 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:59,992 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [189] total 189 [2018-07-25 08:53:59,992 INFO L451 AbstractCegarLoop]: Interpolant automaton has 191 states [2018-07-25 08:53:59,995 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 191 interpolants. [2018-07-25 08:53:59,996 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18145, Invalid=18145, Unknown=0, NotChecked=0, Total=36290 [2018-07-25 08:53:59,996 INFO L87 Difference]: Start difference. First operand 380 states and 380 transitions. Second operand 191 states. [2018-07-25 08:54:01,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:01,149 INFO L93 Difference]: Finished difference Result 383 states and 383 transitions. [2018-07-25 08:54:01,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2018-07-25 08:54:01,149 INFO L78 Accepts]: Start accepts. Automaton has 191 states. Word has length 379 [2018-07-25 08:54:01,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:01,150 INFO L225 Difference]: With dead ends: 383 [2018-07-25 08:54:01,150 INFO L226 Difference]: Without dead ends: 382 [2018-07-25 08:54:01,152 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18145, Invalid=18145, Unknown=0, NotChecked=0, Total=36290 [2018-07-25 08:54:01,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2018-07-25 08:54:01,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2018-07-25 08:54:01,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2018-07-25 08:54:01,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 382 transitions. [2018-07-25 08:54:01,156 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 382 transitions. Word has length 379 [2018-07-25 08:54:01,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:01,156 INFO L472 AbstractCegarLoop]: Abstraction has 382 states and 382 transitions. [2018-07-25 08:54:01,156 INFO L473 AbstractCegarLoop]: Interpolant automaton has 191 states. [2018-07-25 08:54:01,156 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 382 transitions. [2018-07-25 08:54:01,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2018-07-25 08:54:01,157 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:01,157 INFO L354 BasicCegarLoop]: trace histogram [190, 189, 1, 1] [2018-07-25 08:54:01,157 INFO L415 AbstractCegarLoop]: === Iteration 190 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:01,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1740611226, now seen corresponding path program 189 times [2018-07-25 08:54:01,157 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:01,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:02,315 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 08:54:02,315 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:02,315 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [190] total 190 [2018-07-25 08:54:02,315 INFO L451 AbstractCegarLoop]: Interpolant automaton has 192 states [2018-07-25 08:54:02,317 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2018-07-25 08:54:02,318 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2018-07-25 08:54:02,319 INFO L87 Difference]: Start difference. First operand 382 states and 382 transitions. Second operand 192 states. [2018-07-25 08:54:04,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:04,039 INFO L93 Difference]: Finished difference Result 385 states and 385 transitions. [2018-07-25 08:54:04,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2018-07-25 08:54:04,040 INFO L78 Accepts]: Start accepts. Automaton has 192 states. Word has length 381 [2018-07-25 08:54:04,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:04,040 INFO L225 Difference]: With dead ends: 385 [2018-07-25 08:54:04,040 INFO L226 Difference]: Without dead ends: 384 [2018-07-25 08:54:04,042 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2018-07-25 08:54:04,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2018-07-25 08:54:04,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 384. [2018-07-25 08:54:04,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 384 states. [2018-07-25 08:54:04,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 384 transitions. [2018-07-25 08:54:04,045 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 384 transitions. Word has length 381 [2018-07-25 08:54:04,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:04,046 INFO L472 AbstractCegarLoop]: Abstraction has 384 states and 384 transitions. [2018-07-25 08:54:04,046 INFO L473 AbstractCegarLoop]: Interpolant automaton has 192 states. [2018-07-25 08:54:04,046 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 384 transitions. [2018-07-25 08:54:04,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2018-07-25 08:54:04,047 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:04,047 INFO L354 BasicCegarLoop]: trace histogram [191, 190, 1, 1] [2018-07-25 08:54:04,047 INFO L415 AbstractCegarLoop]: === Iteration 191 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:04,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1985111132, now seen corresponding path program 190 times [2018-07-25 08:54:04,047 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:04,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:05,200 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 08:54:05,200 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:05,200 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [191] total 191 [2018-07-25 08:54:05,201 INFO L451 AbstractCegarLoop]: Interpolant automaton has 193 states [2018-07-25 08:54:05,203 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2018-07-25 08:54:05,205 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2018-07-25 08:54:05,205 INFO L87 Difference]: Start difference. First operand 384 states and 384 transitions. Second operand 193 states. [2018-07-25 08:54:06,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:06,308 INFO L93 Difference]: Finished difference Result 387 states and 387 transitions. [2018-07-25 08:54:06,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2018-07-25 08:54:06,308 INFO L78 Accepts]: Start accepts. Automaton has 193 states. Word has length 383 [2018-07-25 08:54:06,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:06,308 INFO L225 Difference]: With dead ends: 387 [2018-07-25 08:54:06,309 INFO L226 Difference]: Without dead ends: 386 [2018-07-25 08:54:06,311 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2018-07-25 08:54:06,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2018-07-25 08:54:06,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2018-07-25 08:54:06,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2018-07-25 08:54:06,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 386 transitions. [2018-07-25 08:54:06,314 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 386 transitions. Word has length 383 [2018-07-25 08:54:06,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:06,315 INFO L472 AbstractCegarLoop]: Abstraction has 386 states and 386 transitions. [2018-07-25 08:54:06,315 INFO L473 AbstractCegarLoop]: Interpolant automaton has 193 states. [2018-07-25 08:54:06,315 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 386 transitions. [2018-07-25 08:54:06,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2018-07-25 08:54:06,317 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:06,317 INFO L354 BasicCegarLoop]: trace histogram [192, 191, 1, 1] [2018-07-25 08:54:06,317 INFO L415 AbstractCegarLoop]: === Iteration 192 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:06,317 INFO L82 PathProgramCache]: Analyzing trace with hash 726319518, now seen corresponding path program 191 times [2018-07-25 08:54:06,317 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:06,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:07,500 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 08:54:07,500 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:07,501 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [192] total 192 [2018-07-25 08:54:07,501 INFO L451 AbstractCegarLoop]: Interpolant automaton has 194 states [2018-07-25 08:54:07,504 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2018-07-25 08:54:07,506 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18721, Invalid=18721, Unknown=0, NotChecked=0, Total=37442 [2018-07-25 08:54:07,507 INFO L87 Difference]: Start difference. First operand 386 states and 386 transitions. Second operand 194 states. [2018-07-25 08:54:07,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:07,974 INFO L93 Difference]: Finished difference Result 389 states and 389 transitions. [2018-07-25 08:54:07,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2018-07-25 08:54:07,975 INFO L78 Accepts]: Start accepts. Automaton has 194 states. Word has length 385 [2018-07-25 08:54:07,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:07,975 INFO L225 Difference]: With dead ends: 389 [2018-07-25 08:54:07,975 INFO L226 Difference]: Without dead ends: 388 [2018-07-25 08:54:07,977 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18721, Invalid=18721, Unknown=0, NotChecked=0, Total=37442 [2018-07-25 08:54:07,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2018-07-25 08:54:07,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 388. [2018-07-25 08:54:07,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2018-07-25 08:54:07,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 388 transitions. [2018-07-25 08:54:07,981 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 388 transitions. Word has length 385 [2018-07-25 08:54:07,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:07,982 INFO L472 AbstractCegarLoop]: Abstraction has 388 states and 388 transitions. [2018-07-25 08:54:07,982 INFO L473 AbstractCegarLoop]: Interpolant automaton has 194 states. [2018-07-25 08:54:07,982 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 388 transitions. [2018-07-25 08:54:07,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2018-07-25 08:54:07,983 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:07,984 INFO L354 BasicCegarLoop]: trace histogram [193, 192, 1, 1] [2018-07-25 08:54:07,984 INFO L415 AbstractCegarLoop]: === Iteration 193 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:07,984 INFO L82 PathProgramCache]: Analyzing trace with hash -2086611360, now seen corresponding path program 192 times [2018-07-25 08:54:07,984 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:08,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:09,243 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 08:54:09,244 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:09,244 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [193] total 193 [2018-07-25 08:54:09,244 INFO L451 AbstractCegarLoop]: Interpolant automaton has 195 states [2018-07-25 08:54:09,247 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 195 interpolants. [2018-07-25 08:54:09,249 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18915, Invalid=18915, Unknown=0, NotChecked=0, Total=37830 [2018-07-25 08:54:09,249 INFO L87 Difference]: Start difference. First operand 388 states and 388 transitions. Second operand 195 states. [2018-07-25 08:54:10,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:10,053 INFO L93 Difference]: Finished difference Result 391 states and 391 transitions. [2018-07-25 08:54:10,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2018-07-25 08:54:10,053 INFO L78 Accepts]: Start accepts. Automaton has 195 states. Word has length 387 [2018-07-25 08:54:10,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:10,054 INFO L225 Difference]: With dead ends: 391 [2018-07-25 08:54:10,054 INFO L226 Difference]: Without dead ends: 390 [2018-07-25 08:54:10,057 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18915, Invalid=18915, Unknown=0, NotChecked=0, Total=37830 [2018-07-25 08:54:10,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2018-07-25 08:54:10,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 390. [2018-07-25 08:54:10,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 390 states. [2018-07-25 08:54:10,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 390 transitions. [2018-07-25 08:54:10,060 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 390 transitions. Word has length 387 [2018-07-25 08:54:10,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:10,061 INFO L472 AbstractCegarLoop]: Abstraction has 390 states and 390 transitions. [2018-07-25 08:54:10,061 INFO L473 AbstractCegarLoop]: Interpolant automaton has 195 states. [2018-07-25 08:54:10,061 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 390 transitions. [2018-07-25 08:54:10,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2018-07-25 08:54:10,062 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:10,062 INFO L354 BasicCegarLoop]: trace histogram [194, 193, 1, 1] [2018-07-25 08:54:10,062 INFO L415 AbstractCegarLoop]: === Iteration 194 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:10,062 INFO L82 PathProgramCache]: Analyzing trace with hash 516211362, now seen corresponding path program 193 times [2018-07-25 08:54:10,062 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:10,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:11,303 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 08:54:11,303 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:11,304 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [194] total 194 [2018-07-25 08:54:11,304 INFO L451 AbstractCegarLoop]: Interpolant automaton has 196 states [2018-07-25 08:54:11,306 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2018-07-25 08:54:11,307 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19110, Invalid=19110, Unknown=0, NotChecked=0, Total=38220 [2018-07-25 08:54:11,308 INFO L87 Difference]: Start difference. First operand 390 states and 390 transitions. Second operand 196 states. [2018-07-25 08:54:12,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:12,685 INFO L93 Difference]: Finished difference Result 393 states and 393 transitions. [2018-07-25 08:54:12,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2018-07-25 08:54:12,685 INFO L78 Accepts]: Start accepts. Automaton has 196 states. Word has length 389 [2018-07-25 08:54:12,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:12,686 INFO L225 Difference]: With dead ends: 393 [2018-07-25 08:54:12,686 INFO L226 Difference]: Without dead ends: 392 [2018-07-25 08:54:12,688 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19110, Invalid=19110, Unknown=0, NotChecked=0, Total=38220 [2018-07-25 08:54:12,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2018-07-25 08:54:12,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 392. [2018-07-25 08:54:12,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2018-07-25 08:54:12,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 392 transitions. [2018-07-25 08:54:12,691 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 392 transitions. Word has length 389 [2018-07-25 08:54:12,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:12,692 INFO L472 AbstractCegarLoop]: Abstraction has 392 states and 392 transitions. [2018-07-25 08:54:12,692 INFO L473 AbstractCegarLoop]: Interpolant automaton has 196 states. [2018-07-25 08:54:12,692 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 392 transitions. [2018-07-25 08:54:12,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2018-07-25 08:54:12,693 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:12,693 INFO L354 BasicCegarLoop]: trace histogram [195, 194, 1, 1] [2018-07-25 08:54:12,693 INFO L415 AbstractCegarLoop]: === Iteration 195 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:12,693 INFO L82 PathProgramCache]: Analyzing trace with hash -2137086364, now seen corresponding path program 194 times [2018-07-25 08:54:12,693 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:13,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:13,944 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 08:54:13,944 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:13,944 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [195] total 195 [2018-07-25 08:54:13,945 INFO L451 AbstractCegarLoop]: Interpolant automaton has 197 states [2018-07-25 08:54:13,947 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2018-07-25 08:54:13,949 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19306, Invalid=19306, Unknown=0, NotChecked=0, Total=38612 [2018-07-25 08:54:13,949 INFO L87 Difference]: Start difference. First operand 392 states and 392 transitions. Second operand 197 states. [2018-07-25 08:54:15,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:15,963 INFO L93 Difference]: Finished difference Result 395 states and 395 transitions. [2018-07-25 08:54:15,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2018-07-25 08:54:15,963 INFO L78 Accepts]: Start accepts. Automaton has 197 states. Word has length 391 [2018-07-25 08:54:15,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:15,964 INFO L225 Difference]: With dead ends: 395 [2018-07-25 08:54:15,964 INFO L226 Difference]: Without dead ends: 394 [2018-07-25 08:54:15,968 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19306, Invalid=19306, Unknown=0, NotChecked=0, Total=38612 [2018-07-25 08:54:15,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2018-07-25 08:54:15,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2018-07-25 08:54:15,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2018-07-25 08:54:15,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 394 transitions. [2018-07-25 08:54:15,973 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 394 transitions. Word has length 391 [2018-07-25 08:54:15,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:15,973 INFO L472 AbstractCegarLoop]: Abstraction has 394 states and 394 transitions. [2018-07-25 08:54:15,973 INFO L473 AbstractCegarLoop]: Interpolant automaton has 197 states. [2018-07-25 08:54:15,973 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 394 transitions. [2018-07-25 08:54:15,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2018-07-25 08:54:15,974 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:15,974 INFO L354 BasicCegarLoop]: trace histogram [196, 195, 1, 1] [2018-07-25 08:54:15,975 INFO L415 AbstractCegarLoop]: === Iteration 196 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:15,975 INFO L82 PathProgramCache]: Analyzing trace with hash -745627226, now seen corresponding path program 195 times [2018-07-25 08:54:15,975 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:16,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:17,300 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 08:54:17,301 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:17,301 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [196] total 196 [2018-07-25 08:54:17,301 INFO L451 AbstractCegarLoop]: Interpolant automaton has 198 states [2018-07-25 08:54:17,304 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2018-07-25 08:54:17,306 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19503, Invalid=19503, Unknown=0, NotChecked=0, Total=39006 [2018-07-25 08:54:17,306 INFO L87 Difference]: Start difference. First operand 394 states and 394 transitions. Second operand 198 states. [2018-07-25 08:54:19,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:19,395 INFO L93 Difference]: Finished difference Result 397 states and 397 transitions. [2018-07-25 08:54:19,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2018-07-25 08:54:19,395 INFO L78 Accepts]: Start accepts. Automaton has 198 states. Word has length 393 [2018-07-25 08:54:19,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:19,396 INFO L225 Difference]: With dead ends: 397 [2018-07-25 08:54:19,396 INFO L226 Difference]: Without dead ends: 396 [2018-07-25 08:54:19,398 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19503, Invalid=19503, Unknown=0, NotChecked=0, Total=39006 [2018-07-25 08:54:19,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2018-07-25 08:54:19,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 396. [2018-07-25 08:54:19,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 396 states. [2018-07-25 08:54:19,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 396 transitions. [2018-07-25 08:54:19,401 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 396 transitions. Word has length 393 [2018-07-25 08:54:19,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:19,402 INFO L472 AbstractCegarLoop]: Abstraction has 396 states and 396 transitions. [2018-07-25 08:54:19,402 INFO L473 AbstractCegarLoop]: Interpolant automaton has 198 states. [2018-07-25 08:54:19,402 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 396 transitions. [2018-07-25 08:54:19,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2018-07-25 08:54:19,403 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:19,403 INFO L354 BasicCegarLoop]: trace histogram [197, 196, 1, 1] [2018-07-25 08:54:19,403 INFO L415 AbstractCegarLoop]: === Iteration 197 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:19,403 INFO L82 PathProgramCache]: Analyzing trace with hash 711775336, now seen corresponding path program 196 times [2018-07-25 08:54:19,403 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:19,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:20,670 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 08:54:20,670 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:20,671 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [197] total 197 [2018-07-25 08:54:20,671 INFO L451 AbstractCegarLoop]: Interpolant automaton has 199 states [2018-07-25 08:54:20,674 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 199 interpolants. [2018-07-25 08:54:20,676 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19701, Invalid=19701, Unknown=0, NotChecked=0, Total=39402 [2018-07-25 08:54:20,677 INFO L87 Difference]: Start difference. First operand 396 states and 396 transitions. Second operand 199 states. [2018-07-25 08:54:22,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:22,717 INFO L93 Difference]: Finished difference Result 399 states and 399 transitions. [2018-07-25 08:54:22,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2018-07-25 08:54:22,717 INFO L78 Accepts]: Start accepts. Automaton has 199 states. Word has length 395 [2018-07-25 08:54:22,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:22,718 INFO L225 Difference]: With dead ends: 399 [2018-07-25 08:54:22,718 INFO L226 Difference]: Without dead ends: 398 [2018-07-25 08:54:22,720 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19701, Invalid=19701, Unknown=0, NotChecked=0, Total=39402 [2018-07-25 08:54:22,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2018-07-25 08:54:22,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 398. [2018-07-25 08:54:22,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2018-07-25 08:54:22,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 398 transitions. [2018-07-25 08:54:22,724 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 398 transitions. Word has length 395 [2018-07-25 08:54:22,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:22,724 INFO L472 AbstractCegarLoop]: Abstraction has 398 states and 398 transitions. [2018-07-25 08:54:22,725 INFO L473 AbstractCegarLoop]: Interpolant automaton has 199 states. [2018-07-25 08:54:22,725 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 398 transitions. [2018-07-25 08:54:22,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2018-07-25 08:54:22,726 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:22,726 INFO L354 BasicCegarLoop]: trace histogram [198, 197, 1, 1] [2018-07-25 08:54:22,726 INFO L415 AbstractCegarLoop]: === Iteration 198 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:22,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1116298922, now seen corresponding path program 197 times [2018-07-25 08:54:22,726 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:23,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:24,100 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 08:54:24,101 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:24,101 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [198] total 198 [2018-07-25 08:54:24,101 INFO L451 AbstractCegarLoop]: Interpolant automaton has 200 states [2018-07-25 08:54:24,104 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2018-07-25 08:54:24,107 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19900, Invalid=19900, Unknown=0, NotChecked=0, Total=39800 [2018-07-25 08:54:24,107 INFO L87 Difference]: Start difference. First operand 398 states and 398 transitions. Second operand 200 states. [2018-07-25 08:54:26,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:26,807 INFO L93 Difference]: Finished difference Result 401 states and 401 transitions. [2018-07-25 08:54:26,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2018-07-25 08:54:26,807 INFO L78 Accepts]: Start accepts. Automaton has 200 states. Word has length 397 [2018-07-25 08:54:26,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:26,808 INFO L225 Difference]: With dead ends: 401 [2018-07-25 08:54:26,808 INFO L226 Difference]: Without dead ends: 400 [2018-07-25 08:54:26,811 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=19900, Invalid=19900, Unknown=0, NotChecked=0, Total=39800 [2018-07-25 08:54:26,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2018-07-25 08:54:26,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 400. [2018-07-25 08:54:26,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2018-07-25 08:54:26,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 400 transitions. [2018-07-25 08:54:26,815 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 400 transitions. Word has length 397 [2018-07-25 08:54:26,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:26,816 INFO L472 AbstractCegarLoop]: Abstraction has 400 states and 400 transitions. [2018-07-25 08:54:26,816 INFO L473 AbstractCegarLoop]: Interpolant automaton has 200 states. [2018-07-25 08:54:26,816 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 400 transitions. [2018-07-25 08:54:26,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2018-07-25 08:54:26,817 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:26,817 INFO L354 BasicCegarLoop]: trace histogram [199, 198, 1, 1] [2018-07-25 08:54:26,817 INFO L415 AbstractCegarLoop]: === Iteration 199 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:26,817 INFO L82 PathProgramCache]: Analyzing trace with hash -978558868, now seen corresponding path program 198 times [2018-07-25 08:54:26,817 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:27,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:28,367 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 08:54:28,367 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:28,367 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [199] total 199 [2018-07-25 08:54:28,367 INFO L451 AbstractCegarLoop]: Interpolant automaton has 201 states [2018-07-25 08:54:28,371 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 201 interpolants. [2018-07-25 08:54:28,373 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20100, Invalid=20100, Unknown=0, NotChecked=0, Total=40200 [2018-07-25 08:54:28,374 INFO L87 Difference]: Start difference. First operand 400 states and 400 transitions. Second operand 201 states. [2018-07-25 08:54:30,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:30,039 INFO L93 Difference]: Finished difference Result 403 states and 403 transitions. [2018-07-25 08:54:30,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2018-07-25 08:54:30,039 INFO L78 Accepts]: Start accepts. Automaton has 201 states. Word has length 399 [2018-07-25 08:54:30,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:30,039 INFO L225 Difference]: With dead ends: 403 [2018-07-25 08:54:30,039 INFO L226 Difference]: Without dead ends: 402 [2018-07-25 08:54:30,041 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=20100, Invalid=20100, Unknown=0, NotChecked=0, Total=40200 [2018-07-25 08:54:30,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2018-07-25 08:54:30,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 402. [2018-07-25 08:54:30,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 402 states. [2018-07-25 08:54:30,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 402 transitions. [2018-07-25 08:54:30,044 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 402 transitions. Word has length 399 [2018-07-25 08:54:30,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:30,044 INFO L472 AbstractCegarLoop]: Abstraction has 402 states and 402 transitions. [2018-07-25 08:54:30,044 INFO L473 AbstractCegarLoop]: Interpolant automaton has 201 states. [2018-07-25 08:54:30,044 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 402 transitions. [2018-07-25 08:54:30,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2018-07-25 08:54:30,046 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:30,046 INFO L354 BasicCegarLoop]: trace histogram [200, 199, 1, 1] [2018-07-25 08:54:30,046 INFO L415 AbstractCegarLoop]: === Iteration 200 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:30,046 INFO L82 PathProgramCache]: Analyzing trace with hash 202766766, now seen corresponding path program 199 times [2018-07-25 08:54:30,046 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:30,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:31,337 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 08:54:31,338 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:31,338 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [200] total 200 [2018-07-25 08:54:31,338 INFO L451 AbstractCegarLoop]: Interpolant automaton has 202 states [2018-07-25 08:54:31,342 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 202 interpolants. [2018-07-25 08:54:31,344 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20301, Invalid=20301, Unknown=0, NotChecked=0, Total=40602 [2018-07-25 08:54:31,344 INFO L87 Difference]: Start difference. First operand 402 states and 402 transitions. Second operand 202 states. [2018-07-25 08:54:33,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:33,311 INFO L93 Difference]: Finished difference Result 405 states and 405 transitions. [2018-07-25 08:54:33,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2018-07-25 08:54:33,311 INFO L78 Accepts]: Start accepts. Automaton has 202 states. Word has length 401 [2018-07-25 08:54:33,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:33,312 INFO L225 Difference]: With dead ends: 405 [2018-07-25 08:54:33,312 INFO L226 Difference]: Without dead ends: 404 [2018-07-25 08:54:33,314 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20301, Invalid=20301, Unknown=0, NotChecked=0, Total=40602 [2018-07-25 08:54:33,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2018-07-25 08:54:33,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 404. [2018-07-25 08:54:33,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 404 states. [2018-07-25 08:54:33,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 404 transitions. [2018-07-25 08:54:33,318 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 404 transitions. Word has length 401 [2018-07-25 08:54:33,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:33,318 INFO L472 AbstractCegarLoop]: Abstraction has 404 states and 404 transitions. [2018-07-25 08:54:33,318 INFO L473 AbstractCegarLoop]: Interpolant automaton has 202 states. [2018-07-25 08:54:33,318 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 404 transitions. [2018-07-25 08:54:33,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2018-07-25 08:54:33,319 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:33,319 INFO L354 BasicCegarLoop]: trace histogram [201, 200, 1, 1] [2018-07-25 08:54:33,320 INFO L415 AbstractCegarLoop]: === Iteration 201 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:33,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1585334896, now seen corresponding path program 200 times [2018-07-25 08:54:33,320 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:33,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:34,682 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 08:54:34,682 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:34,682 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [201] total 201 [2018-07-25 08:54:34,683 INFO L451 AbstractCegarLoop]: Interpolant automaton has 203 states [2018-07-25 08:54:34,684 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2018-07-25 08:54:34,686 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20503, Invalid=20503, Unknown=0, NotChecked=0, Total=41006 [2018-07-25 08:54:34,686 INFO L87 Difference]: Start difference. First operand 404 states and 404 transitions. Second operand 203 states. [2018-07-25 08:54:36,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:36,139 INFO L93 Difference]: Finished difference Result 407 states and 407 transitions. [2018-07-25 08:54:36,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2018-07-25 08:54:36,139 INFO L78 Accepts]: Start accepts. Automaton has 203 states. Word has length 403 [2018-07-25 08:54:36,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:36,140 INFO L225 Difference]: With dead ends: 407 [2018-07-25 08:54:36,140 INFO L226 Difference]: Without dead ends: 406 [2018-07-25 08:54:36,141 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20503, Invalid=20503, Unknown=0, NotChecked=0, Total=41006 [2018-07-25 08:54:36,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2018-07-25 08:54:36,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 406. [2018-07-25 08:54:36,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 406 states. [2018-07-25 08:54:36,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 406 transitions. [2018-07-25 08:54:36,145 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 406 transitions. Word has length 403 [2018-07-25 08:54:36,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:36,145 INFO L472 AbstractCegarLoop]: Abstraction has 406 states and 406 transitions. [2018-07-25 08:54:36,145 INFO L473 AbstractCegarLoop]: Interpolant automaton has 203 states. [2018-07-25 08:54:36,146 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 406 transitions. [2018-07-25 08:54:36,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2018-07-25 08:54:36,147 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:36,147 INFO L354 BasicCegarLoop]: trace histogram [202, 201, 1, 1] [2018-07-25 08:54:36,147 INFO L415 AbstractCegarLoop]: === Iteration 202 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:36,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1206553934, now seen corresponding path program 201 times [2018-07-25 08:54:36,147 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:36,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:37,480 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 08:54:37,480 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:37,480 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [202] total 202 [2018-07-25 08:54:37,481 INFO L451 AbstractCegarLoop]: Interpolant automaton has 204 states [2018-07-25 08:54:37,484 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2018-07-25 08:54:37,486 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20706, Invalid=20706, Unknown=0, NotChecked=0, Total=41412 [2018-07-25 08:54:37,487 INFO L87 Difference]: Start difference. First operand 406 states and 406 transitions. Second operand 204 states. [2018-07-25 08:54:38,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:38,174 INFO L93 Difference]: Finished difference Result 409 states and 409 transitions. [2018-07-25 08:54:38,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2018-07-25 08:54:38,174 INFO L78 Accepts]: Start accepts. Automaton has 204 states. Word has length 405 [2018-07-25 08:54:38,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:38,175 INFO L225 Difference]: With dead ends: 409 [2018-07-25 08:54:38,175 INFO L226 Difference]: Without dead ends: 408 [2018-07-25 08:54:38,180 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20706, Invalid=20706, Unknown=0, NotChecked=0, Total=41412 [2018-07-25 08:54:38,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2018-07-25 08:54:38,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 408. [2018-07-25 08:54:38,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 408 states. [2018-07-25 08:54:38,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 408 transitions. [2018-07-25 08:54:38,186 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 408 transitions. Word has length 405 [2018-07-25 08:54:38,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:38,187 INFO L472 AbstractCegarLoop]: Abstraction has 408 states and 408 transitions. [2018-07-25 08:54:38,187 INFO L473 AbstractCegarLoop]: Interpolant automaton has 204 states. [2018-07-25 08:54:38,187 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 408 transitions. [2018-07-25 08:54:38,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2018-07-25 08:54:38,189 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:38,189 INFO L354 BasicCegarLoop]: trace histogram [203, 202, 1, 1] [2018-07-25 08:54:38,189 INFO L415 AbstractCegarLoop]: === Iteration 203 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:38,189 INFO L82 PathProgramCache]: Analyzing trace with hash 142840436, now seen corresponding path program 202 times [2018-07-25 08:54:38,189 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:38,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:39,594 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 08:54:39,595 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:39,595 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [203] total 203 [2018-07-25 08:54:39,595 INFO L451 AbstractCegarLoop]: Interpolant automaton has 205 states [2018-07-25 08:54:39,598 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 205 interpolants. [2018-07-25 08:54:39,600 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20910, Invalid=20910, Unknown=0, NotChecked=0, Total=41820 [2018-07-25 08:54:39,600 INFO L87 Difference]: Start difference. First operand 408 states and 408 transitions. Second operand 205 states. [2018-07-25 08:54:40,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:40,528 INFO L93 Difference]: Finished difference Result 411 states and 411 transitions. [2018-07-25 08:54:40,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2018-07-25 08:54:40,528 INFO L78 Accepts]: Start accepts. Automaton has 205 states. Word has length 407 [2018-07-25 08:54:40,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:40,528 INFO L225 Difference]: With dead ends: 411 [2018-07-25 08:54:40,529 INFO L226 Difference]: Without dead ends: 410 [2018-07-25 08:54:40,531 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20910, Invalid=20910, Unknown=0, NotChecked=0, Total=41820 [2018-07-25 08:54:40,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2018-07-25 08:54:40,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2018-07-25 08:54:40,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 410 states. [2018-07-25 08:54:40,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 410 transitions. [2018-07-25 08:54:40,534 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 410 transitions. Word has length 407 [2018-07-25 08:54:40,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:40,535 INFO L472 AbstractCegarLoop]: Abstraction has 410 states and 410 transitions. [2018-07-25 08:54:40,535 INFO L473 AbstractCegarLoop]: Interpolant automaton has 205 states. [2018-07-25 08:54:40,535 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 410 transitions. [2018-07-25 08:54:40,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2018-07-25 08:54:40,536 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:40,536 INFO L354 BasicCegarLoop]: trace histogram [204, 203, 1, 1] [2018-07-25 08:54:40,536 INFO L415 AbstractCegarLoop]: === Iteration 204 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:40,536 INFO L82 PathProgramCache]: Analyzing trace with hash -169293386, now seen corresponding path program 203 times [2018-07-25 08:54:40,536 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:40,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:41,936 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 08:54:41,936 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:41,936 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [204] total 204 [2018-07-25 08:54:41,937 INFO L451 AbstractCegarLoop]: Interpolant automaton has 206 states [2018-07-25 08:54:41,940 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 206 interpolants. [2018-07-25 08:54:41,942 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21115, Invalid=21115, Unknown=0, NotChecked=0, Total=42230 [2018-07-25 08:54:41,943 INFO L87 Difference]: Start difference. First operand 410 states and 410 transitions. Second operand 206 states. [2018-07-25 08:54:43,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:43,691 INFO L93 Difference]: Finished difference Result 413 states and 413 transitions. [2018-07-25 08:54:43,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2018-07-25 08:54:43,692 INFO L78 Accepts]: Start accepts. Automaton has 206 states. Word has length 409 [2018-07-25 08:54:43,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:43,692 INFO L225 Difference]: With dead ends: 413 [2018-07-25 08:54:43,692 INFO L226 Difference]: Without dead ends: 412 [2018-07-25 08:54:43,695 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=21115, Invalid=21115, Unknown=0, NotChecked=0, Total=42230 [2018-07-25 08:54:43,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2018-07-25 08:54:43,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2018-07-25 08:54:43,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2018-07-25 08:54:43,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 412 transitions. [2018-07-25 08:54:43,700 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 412 transitions. Word has length 409 [2018-07-25 08:54:43,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:43,700 INFO L472 AbstractCegarLoop]: Abstraction has 412 states and 412 transitions. [2018-07-25 08:54:43,700 INFO L473 AbstractCegarLoop]: Interpolant automaton has 206 states. [2018-07-25 08:54:43,700 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 412 transitions. [2018-07-25 08:54:43,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2018-07-25 08:54:43,701 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:43,701 INFO L354 BasicCegarLoop]: trace histogram [205, 204, 1, 1] [2018-07-25 08:54:43,701 INFO L415 AbstractCegarLoop]: === Iteration 205 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:43,702 INFO L82 PathProgramCache]: Analyzing trace with hash 517814392, now seen corresponding path program 204 times [2018-07-25 08:54:43,702 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:44,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:45,136 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 08:54:45,136 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:45,136 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [205] total 205 [2018-07-25 08:54:45,137 INFO L451 AbstractCegarLoop]: Interpolant automaton has 207 states [2018-07-25 08:54:45,140 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 207 interpolants. [2018-07-25 08:54:45,142 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21321, Invalid=21321, Unknown=0, NotChecked=0, Total=42642 [2018-07-25 08:54:45,142 INFO L87 Difference]: Start difference. First operand 412 states and 412 transitions. Second operand 207 states. [2018-07-25 08:54:47,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:47,522 INFO L93 Difference]: Finished difference Result 415 states and 415 transitions. [2018-07-25 08:54:47,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2018-07-25 08:54:47,522 INFO L78 Accepts]: Start accepts. Automaton has 207 states. Word has length 411 [2018-07-25 08:54:47,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:47,523 INFO L225 Difference]: With dead ends: 415 [2018-07-25 08:54:47,523 INFO L226 Difference]: Without dead ends: 414 [2018-07-25 08:54:47,526 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=21321, Invalid=21321, Unknown=0, NotChecked=0, Total=42642 [2018-07-25 08:54:47,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2018-07-25 08:54:47,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 414. [2018-07-25 08:54:47,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2018-07-25 08:54:47,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 414 transitions. [2018-07-25 08:54:47,530 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 414 transitions. Word has length 411 [2018-07-25 08:54:47,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:47,530 INFO L472 AbstractCegarLoop]: Abstraction has 414 states and 414 transitions. [2018-07-25 08:54:47,530 INFO L473 AbstractCegarLoop]: Interpolant automaton has 207 states. [2018-07-25 08:54:47,530 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 414 transitions. [2018-07-25 08:54:47,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2018-07-25 08:54:47,531 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:47,531 INFO L354 BasicCegarLoop]: trace histogram [206, 205, 1, 1] [2018-07-25 08:54:47,531 INFO L415 AbstractCegarLoop]: === Iteration 206 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:47,532 INFO L82 PathProgramCache]: Analyzing trace with hash -596574534, now seen corresponding path program 205 times [2018-07-25 08:54:47,532 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:47,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:49,052 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 08:54:49,052 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:49,053 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [206] total 206 [2018-07-25 08:54:49,053 INFO L451 AbstractCegarLoop]: Interpolant automaton has 208 states [2018-07-25 08:54:49,054 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 208 interpolants. [2018-07-25 08:54:49,055 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21528, Invalid=21528, Unknown=0, NotChecked=0, Total=43056 [2018-07-25 08:54:49,055 INFO L87 Difference]: Start difference. First operand 414 states and 414 transitions. Second operand 208 states. [2018-07-25 08:54:50,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:50,299 INFO L93 Difference]: Finished difference Result 417 states and 417 transitions. [2018-07-25 08:54:50,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2018-07-25 08:54:50,300 INFO L78 Accepts]: Start accepts. Automaton has 208 states. Word has length 413 [2018-07-25 08:54:50,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:50,300 INFO L225 Difference]: With dead ends: 417 [2018-07-25 08:54:50,300 INFO L226 Difference]: Without dead ends: 416 [2018-07-25 08:54:50,302 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=21528, Invalid=21528, Unknown=0, NotChecked=0, Total=43056 [2018-07-25 08:54:50,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2018-07-25 08:54:50,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 416. [2018-07-25 08:54:50,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2018-07-25 08:54:50,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 416 transitions. [2018-07-25 08:54:50,305 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 416 transitions. Word has length 413 [2018-07-25 08:54:50,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:50,306 INFO L472 AbstractCegarLoop]: Abstraction has 416 states and 416 transitions. [2018-07-25 08:54:50,306 INFO L473 AbstractCegarLoop]: Interpolant automaton has 208 states. [2018-07-25 08:54:50,306 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 416 transitions. [2018-07-25 08:54:50,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2018-07-25 08:54:50,307 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:50,307 INFO L354 BasicCegarLoop]: trace histogram [207, 206, 1, 1] [2018-07-25 08:54:50,307 INFO L415 AbstractCegarLoop]: === Iteration 207 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:50,307 INFO L82 PathProgramCache]: Analyzing trace with hash -2077475716, now seen corresponding path program 206 times [2018-07-25 08:54:50,307 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:50,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:51,799 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 08:54:51,799 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:51,799 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [207] total 207 [2018-07-25 08:54:51,800 INFO L451 AbstractCegarLoop]: Interpolant automaton has 209 states [2018-07-25 08:54:51,803 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 209 interpolants. [2018-07-25 08:54:51,805 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21736, Invalid=21736, Unknown=0, NotChecked=0, Total=43472 [2018-07-25 08:54:51,805 INFO L87 Difference]: Start difference. First operand 416 states and 416 transitions. Second operand 209 states. [2018-07-25 08:54:52,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:52,866 INFO L93 Difference]: Finished difference Result 419 states and 419 transitions. [2018-07-25 08:54:52,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2018-07-25 08:54:52,866 INFO L78 Accepts]: Start accepts. Automaton has 209 states. Word has length 415 [2018-07-25 08:54:52,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:52,867 INFO L225 Difference]: With dead ends: 419 [2018-07-25 08:54:52,867 INFO L226 Difference]: Without dead ends: 418 [2018-07-25 08:54:52,870 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=21736, Invalid=21736, Unknown=0, NotChecked=0, Total=43472 [2018-07-25 08:54:52,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2018-07-25 08:54:52,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2018-07-25 08:54:52,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2018-07-25 08:54:52,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 418 transitions. [2018-07-25 08:54:52,874 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 418 transitions. Word has length 415 [2018-07-25 08:54:52,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:52,874 INFO L472 AbstractCegarLoop]: Abstraction has 418 states and 418 transitions. [2018-07-25 08:54:52,874 INFO L473 AbstractCegarLoop]: Interpolant automaton has 209 states. [2018-07-25 08:54:52,874 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 418 transitions. [2018-07-25 08:54:52,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2018-07-25 08:54:52,876 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:52,876 INFO L354 BasicCegarLoop]: trace histogram [208, 207, 1, 1] [2018-07-25 08:54:52,876 INFO L415 AbstractCegarLoop]: === Iteration 208 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:52,876 INFO L82 PathProgramCache]: Analyzing trace with hash 705630654, now seen corresponding path program 207 times [2018-07-25 08:54:52,876 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:53,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:54,340 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 08:54:54,341 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:54,341 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [208] total 208 [2018-07-25 08:54:54,341 INFO L451 AbstractCegarLoop]: Interpolant automaton has 210 states [2018-07-25 08:54:54,343 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 210 interpolants. [2018-07-25 08:54:54,345 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21945, Invalid=21945, Unknown=0, NotChecked=0, Total=43890 [2018-07-25 08:54:54,345 INFO L87 Difference]: Start difference. First operand 418 states and 418 transitions. Second operand 210 states. [2018-07-25 08:54:56,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:56,682 INFO L93 Difference]: Finished difference Result 421 states and 421 transitions. [2018-07-25 08:54:56,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2018-07-25 08:54:56,682 INFO L78 Accepts]: Start accepts. Automaton has 210 states. Word has length 417 [2018-07-25 08:54:56,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:56,683 INFO L225 Difference]: With dead ends: 421 [2018-07-25 08:54:56,683 INFO L226 Difference]: Without dead ends: 420 [2018-07-25 08:54:56,685 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=21945, Invalid=21945, Unknown=0, NotChecked=0, Total=43890 [2018-07-25 08:54:56,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2018-07-25 08:54:56,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 420. [2018-07-25 08:54:56,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 420 states. [2018-07-25 08:54:56,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 420 transitions. [2018-07-25 08:54:56,689 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 420 transitions. Word has length 417 [2018-07-25 08:54:56,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:56,689 INFO L472 AbstractCegarLoop]: Abstraction has 420 states and 420 transitions. [2018-07-25 08:54:56,689 INFO L473 AbstractCegarLoop]: Interpolant automaton has 210 states. [2018-07-25 08:54:56,689 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 420 transitions. [2018-07-25 08:54:56,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2018-07-25 08:54:56,690 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:56,691 INFO L354 BasicCegarLoop]: trace histogram [209, 208, 1, 1] [2018-07-25 08:54:56,691 INFO L415 AbstractCegarLoop]: === Iteration 209 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:56,691 INFO L82 PathProgramCache]: Analyzing trace with hash -493773184, now seen corresponding path program 208 times [2018-07-25 08:54:56,691 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:57,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:58,158 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 08:54:58,159 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:58,159 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [209] total 209 [2018-07-25 08:54:58,159 INFO L451 AbstractCegarLoop]: Interpolant automaton has 211 states [2018-07-25 08:54:58,163 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 211 interpolants. [2018-07-25 08:54:58,165 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22155, Invalid=22155, Unknown=0, NotChecked=0, Total=44310 [2018-07-25 08:54:58,165 INFO L87 Difference]: Start difference. First operand 420 states and 420 transitions. Second operand 211 states. [2018-07-25 08:54:59,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:59,432 INFO L93 Difference]: Finished difference Result 423 states and 423 transitions. [2018-07-25 08:54:59,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2018-07-25 08:54:59,432 INFO L78 Accepts]: Start accepts. Automaton has 211 states. Word has length 419 [2018-07-25 08:54:59,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:59,433 INFO L225 Difference]: With dead ends: 423 [2018-07-25 08:54:59,433 INFO L226 Difference]: Without dead ends: 422 [2018-07-25 08:54:59,436 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22155, Invalid=22155, Unknown=0, NotChecked=0, Total=44310 [2018-07-25 08:54:59,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2018-07-25 08:54:59,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 422. [2018-07-25 08:54:59,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 422 states. [2018-07-25 08:54:59,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 422 transitions. [2018-07-25 08:54:59,440 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 422 transitions. Word has length 419 [2018-07-25 08:54:59,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:59,440 INFO L472 AbstractCegarLoop]: Abstraction has 422 states and 422 transitions. [2018-07-25 08:54:59,440 INFO L473 AbstractCegarLoop]: Interpolant automaton has 211 states. [2018-07-25 08:54:59,440 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 422 transitions. [2018-07-25 08:54:59,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2018-07-25 08:54:59,441 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:59,441 INFO L354 BasicCegarLoop]: trace histogram [210, 209, 1, 1] [2018-07-25 08:54:59,442 INFO L415 AbstractCegarLoop]: === Iteration 210 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:59,442 INFO L82 PathProgramCache]: Analyzing trace with hash -2069626174, now seen corresponding path program 209 times [2018-07-25 08:54:59,442 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:59,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:00,969 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 08:55:00,969 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:00,969 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [210] total 210 [2018-07-25 08:55:00,969 INFO L451 AbstractCegarLoop]: Interpolant automaton has 212 states [2018-07-25 08:55:00,973 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 212 interpolants. [2018-07-25 08:55:00,975 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22366, Invalid=22366, Unknown=0, NotChecked=0, Total=44732 [2018-07-25 08:55:00,976 INFO L87 Difference]: Start difference. First operand 422 states and 422 transitions. Second operand 212 states. [2018-07-25 08:55:03,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:03,153 INFO L93 Difference]: Finished difference Result 425 states and 425 transitions. [2018-07-25 08:55:03,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2018-07-25 08:55:03,153 INFO L78 Accepts]: Start accepts. Automaton has 212 states. Word has length 421 [2018-07-25 08:55:03,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:03,154 INFO L225 Difference]: With dead ends: 425 [2018-07-25 08:55:03,154 INFO L226 Difference]: Without dead ends: 424 [2018-07-25 08:55:03,156 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22366, Invalid=22366, Unknown=0, NotChecked=0, Total=44732 [2018-07-25 08:55:03,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2018-07-25 08:55:03,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 424. [2018-07-25 08:55:03,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424 states. [2018-07-25 08:55:03,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 424 transitions. [2018-07-25 08:55:03,161 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 424 transitions. Word has length 421 [2018-07-25 08:55:03,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:03,161 INFO L472 AbstractCegarLoop]: Abstraction has 424 states and 424 transitions. [2018-07-25 08:55:03,161 INFO L473 AbstractCegarLoop]: Interpolant automaton has 212 states. [2018-07-25 08:55:03,161 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 424 transitions. [2018-07-25 08:55:03,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2018-07-25 08:55:03,162 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:03,162 INFO L354 BasicCegarLoop]: trace histogram [211, 210, 1, 1] [2018-07-25 08:55:03,162 INFO L415 AbstractCegarLoop]: === Iteration 211 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:03,163 INFO L82 PathProgramCache]: Analyzing trace with hash -340894076, now seen corresponding path program 210 times [2018-07-25 08:55:03,163 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:03,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:05,031 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 08:55:05,031 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:05,031 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [211] total 211 [2018-07-25 08:55:05,032 INFO L451 AbstractCegarLoop]: Interpolant automaton has 213 states [2018-07-25 08:55:05,033 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 213 interpolants. [2018-07-25 08:55:05,035 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22578, Invalid=22578, Unknown=0, NotChecked=0, Total=45156 [2018-07-25 08:55:05,035 INFO L87 Difference]: Start difference. First operand 424 states and 424 transitions. Second operand 213 states. [2018-07-25 08:55:06,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:06,396 INFO L93 Difference]: Finished difference Result 427 states and 427 transitions. [2018-07-25 08:55:06,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2018-07-25 08:55:06,396 INFO L78 Accepts]: Start accepts. Automaton has 213 states. Word has length 423 [2018-07-25 08:55:06,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:06,397 INFO L225 Difference]: With dead ends: 427 [2018-07-25 08:55:06,397 INFO L226 Difference]: Without dead ends: 426 [2018-07-25 08:55:06,398 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=22578, Invalid=22578, Unknown=0, NotChecked=0, Total=45156 [2018-07-25 08:55:06,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2018-07-25 08:55:06,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 426. [2018-07-25 08:55:06,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2018-07-25 08:55:06,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 426 transitions. [2018-07-25 08:55:06,403 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 426 transitions. Word has length 423 [2018-07-25 08:55:06,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:06,403 INFO L472 AbstractCegarLoop]: Abstraction has 426 states and 426 transitions. [2018-07-25 08:55:06,403 INFO L473 AbstractCegarLoop]: Interpolant automaton has 213 states. [2018-07-25 08:55:06,403 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 426 transitions. [2018-07-25 08:55:06,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2018-07-25 08:55:06,404 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:06,405 INFO L354 BasicCegarLoop]: trace histogram [212, 211, 1, 1] [2018-07-25 08:55:06,405 INFO L415 AbstractCegarLoop]: === Iteration 212 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:06,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1181691450, now seen corresponding path program 211 times [2018-07-25 08:55:06,405 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:07,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:08,392 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 08:55:08,392 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:08,393 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [212] total 212 [2018-07-25 08:55:08,393 INFO L451 AbstractCegarLoop]: Interpolant automaton has 214 states [2018-07-25 08:55:08,397 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 214 interpolants. [2018-07-25 08:55:08,401 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22791, Invalid=22791, Unknown=0, NotChecked=0, Total=45582 [2018-07-25 08:55:08,401 INFO L87 Difference]: Start difference. First operand 426 states and 426 transitions. Second operand 214 states. [2018-07-25 08:55:11,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:11,144 INFO L93 Difference]: Finished difference Result 429 states and 429 transitions. [2018-07-25 08:55:11,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2018-07-25 08:55:11,144 INFO L78 Accepts]: Start accepts. Automaton has 214 states. Word has length 425 [2018-07-25 08:55:11,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:11,145 INFO L225 Difference]: With dead ends: 429 [2018-07-25 08:55:11,145 INFO L226 Difference]: Without dead ends: 428 [2018-07-25 08:55:11,149 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=22791, Invalid=22791, Unknown=0, NotChecked=0, Total=45582 [2018-07-25 08:55:11,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2018-07-25 08:55:11,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 428. [2018-07-25 08:55:11,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2018-07-25 08:55:11,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 428 transitions. [2018-07-25 08:55:11,154 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 428 transitions. Word has length 425 [2018-07-25 08:55:11,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:11,154 INFO L472 AbstractCegarLoop]: Abstraction has 428 states and 428 transitions. [2018-07-25 08:55:11,154 INFO L473 AbstractCegarLoop]: Interpolant automaton has 214 states. [2018-07-25 08:55:11,155 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 428 transitions. [2018-07-25 08:55:11,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2018-07-25 08:55:11,156 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:11,156 INFO L354 BasicCegarLoop]: trace histogram [213, 212, 1, 1] [2018-07-25 08:55:11,156 INFO L415 AbstractCegarLoop]: === Iteration 213 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:11,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1734116216, now seen corresponding path program 212 times [2018-07-25 08:55:11,156 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:11,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:13,214 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 08:55:13,214 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:13,215 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [213] total 213 [2018-07-25 08:55:13,215 INFO L451 AbstractCegarLoop]: Interpolant automaton has 215 states [2018-07-25 08:55:13,219 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 215 interpolants. [2018-07-25 08:55:13,223 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23005, Invalid=23005, Unknown=0, NotChecked=0, Total=46010 [2018-07-25 08:55:13,223 INFO L87 Difference]: Start difference. First operand 428 states and 428 transitions. Second operand 215 states. [2018-07-25 08:55:15,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:15,439 INFO L93 Difference]: Finished difference Result 431 states and 431 transitions. [2018-07-25 08:55:15,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 215 states. [2018-07-25 08:55:15,439 INFO L78 Accepts]: Start accepts. Automaton has 215 states. Word has length 427 [2018-07-25 08:55:15,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:15,440 INFO L225 Difference]: With dead ends: 431 [2018-07-25 08:55:15,440 INFO L226 Difference]: Without dead ends: 430 [2018-07-25 08:55:15,444 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=23005, Invalid=23005, Unknown=0, NotChecked=0, Total=46010 [2018-07-25 08:55:15,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2018-07-25 08:55:15,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 430. [2018-07-25 08:55:15,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2018-07-25 08:55:15,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 430 transitions. [2018-07-25 08:55:15,449 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 430 transitions. Word has length 427 [2018-07-25 08:55:15,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:15,449 INFO L472 AbstractCegarLoop]: Abstraction has 430 states and 430 transitions. [2018-07-25 08:55:15,450 INFO L473 AbstractCegarLoop]: Interpolant automaton has 215 states. [2018-07-25 08:55:15,450 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 430 transitions. [2018-07-25 08:55:15,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2018-07-25 08:55:15,451 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:15,451 INFO L354 BasicCegarLoop]: trace histogram [214, 213, 1, 1] [2018-07-25 08:55:15,451 INFO L415 AbstractCegarLoop]: === Iteration 214 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:15,451 INFO L82 PathProgramCache]: Analyzing trace with hash -38371638, now seen corresponding path program 213 times [2018-07-25 08:55:15,452 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:16,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:17,596 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 08:55:17,596 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:17,597 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [214] total 214 [2018-07-25 08:55:17,597 INFO L451 AbstractCegarLoop]: Interpolant automaton has 216 states [2018-07-25 08:55:17,599 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2018-07-25 08:55:17,600 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23220, Invalid=23220, Unknown=0, NotChecked=0, Total=46440 [2018-07-25 08:55:17,600 INFO L87 Difference]: Start difference. First operand 430 states and 430 transitions. Second operand 216 states. [2018-07-25 08:55:20,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:20,095 INFO L93 Difference]: Finished difference Result 433 states and 433 transitions. [2018-07-25 08:55:20,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 216 states. [2018-07-25 08:55:20,095 INFO L78 Accepts]: Start accepts. Automaton has 216 states. Word has length 429 [2018-07-25 08:55:20,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:20,096 INFO L225 Difference]: With dead ends: 433 [2018-07-25 08:55:20,096 INFO L226 Difference]: Without dead ends: 432 [2018-07-25 08:55:20,098 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=23220, Invalid=23220, Unknown=0, NotChecked=0, Total=46440 [2018-07-25 08:55:20,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2018-07-25 08:55:20,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 432. [2018-07-25 08:55:20,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 432 states. [2018-07-25 08:55:20,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 432 transitions. [2018-07-25 08:55:20,101 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 432 transitions. Word has length 429 [2018-07-25 08:55:20,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:20,102 INFO L472 AbstractCegarLoop]: Abstraction has 432 states and 432 transitions. [2018-07-25 08:55:20,102 INFO L473 AbstractCegarLoop]: Interpolant automaton has 216 states. [2018-07-25 08:55:20,102 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 432 transitions. [2018-07-25 08:55:20,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2018-07-25 08:55:20,103 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:20,103 INFO L354 BasicCegarLoop]: trace histogram [215, 214, 1, 1] [2018-07-25 08:55:20,103 INFO L415 AbstractCegarLoop]: === Iteration 215 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:20,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1779562636, now seen corresponding path program 214 times [2018-07-25 08:55:20,104 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:20,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:21,823 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 08:55:21,823 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:21,823 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [215] total 215 [2018-07-25 08:55:21,823 INFO L451 AbstractCegarLoop]: Interpolant automaton has 217 states [2018-07-25 08:55:21,827 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 217 interpolants. [2018-07-25 08:55:21,830 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23436, Invalid=23436, Unknown=0, NotChecked=0, Total=46872 [2018-07-25 08:55:21,830 INFO L87 Difference]: Start difference. First operand 432 states and 432 transitions. Second operand 217 states. [2018-07-25 08:55:22,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:22,579 INFO L93 Difference]: Finished difference Result 435 states and 435 transitions. [2018-07-25 08:55:22,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 217 states. [2018-07-25 08:55:22,579 INFO L78 Accepts]: Start accepts. Automaton has 217 states. Word has length 431 [2018-07-25 08:55:22,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:22,580 INFO L225 Difference]: With dead ends: 435 [2018-07-25 08:55:22,580 INFO L226 Difference]: Without dead ends: 434 [2018-07-25 08:55:22,583 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=23436, Invalid=23436, Unknown=0, NotChecked=0, Total=46872 [2018-07-25 08:55:22,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-07-25 08:55:22,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-07-25 08:55:22,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-07-25 08:55:22,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 434 transitions. [2018-07-25 08:55:22,587 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 434 transitions. Word has length 431 [2018-07-25 08:55:22,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:22,587 INFO L472 AbstractCegarLoop]: Abstraction has 434 states and 434 transitions. [2018-07-25 08:55:22,587 INFO L473 AbstractCegarLoop]: Interpolant automaton has 217 states. [2018-07-25 08:55:22,587 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 434 transitions. [2018-07-25 08:55:22,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2018-07-25 08:55:22,589 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:22,589 INFO L354 BasicCegarLoop]: trace histogram [216, 215, 1, 1] [2018-07-25 08:55:22,589 INFO L415 AbstractCegarLoop]: === Iteration 216 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:22,589 INFO L82 PathProgramCache]: Analyzing trace with hash 762710478, now seen corresponding path program 215 times [2018-07-25 08:55:22,589 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:23,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:24,362 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 08:55:24,362 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:24,362 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [216] total 216 [2018-07-25 08:55:24,363 INFO L451 AbstractCegarLoop]: Interpolant automaton has 218 states [2018-07-25 08:55:24,366 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 218 interpolants. [2018-07-25 08:55:24,368 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23653, Invalid=23653, Unknown=0, NotChecked=0, Total=47306 [2018-07-25 08:55:24,369 INFO L87 Difference]: Start difference. First operand 434 states and 434 transitions. Second operand 218 states. [2018-07-25 08:55:26,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:26,719 INFO L93 Difference]: Finished difference Result 437 states and 437 transitions. [2018-07-25 08:55:26,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2018-07-25 08:55:26,719 INFO L78 Accepts]: Start accepts. Automaton has 218 states. Word has length 433 [2018-07-25 08:55:26,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:26,720 INFO L225 Difference]: With dead ends: 437 [2018-07-25 08:55:26,720 INFO L226 Difference]: Without dead ends: 436 [2018-07-25 08:55:26,724 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=23653, Invalid=23653, Unknown=0, NotChecked=0, Total=47306 [2018-07-25 08:55:26,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2018-07-25 08:55:26,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 436. [2018-07-25 08:55:26,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 436 states. [2018-07-25 08:55:26,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 436 transitions. [2018-07-25 08:55:26,729 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 436 transitions. Word has length 433 [2018-07-25 08:55:26,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:26,729 INFO L472 AbstractCegarLoop]: Abstraction has 436 states and 436 transitions. [2018-07-25 08:55:26,730 INFO L473 AbstractCegarLoop]: Interpolant automaton has 218 states. [2018-07-25 08:55:26,730 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 436 transitions. [2018-07-25 08:55:26,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2018-07-25 08:55:26,731 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:26,731 INFO L354 BasicCegarLoop]: trace histogram [217, 216, 1, 1] [2018-07-25 08:55:26,731 INFO L415 AbstractCegarLoop]: === Iteration 217 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:26,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1474637168, now seen corresponding path program 216 times [2018-07-25 08:55:26,731 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:27,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:28,579 INFO L134 CoverageAnalysis]: Checked inductivity of 46872 backedges. 0 proven. 46872 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:28,579 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:28,579 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [217] total 217 [2018-07-25 08:55:28,580 INFO L451 AbstractCegarLoop]: Interpolant automaton has 219 states [2018-07-25 08:55:28,582 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 219 interpolants. [2018-07-25 08:55:28,583 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23871, Invalid=23871, Unknown=0, NotChecked=0, Total=47742 [2018-07-25 08:55:28,583 INFO L87 Difference]: Start difference. First operand 436 states and 436 transitions. Second operand 219 states. [2018-07-25 08:55:30,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:30,765 INFO L93 Difference]: Finished difference Result 439 states and 439 transitions. [2018-07-25 08:55:30,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 219 states. [2018-07-25 08:55:30,765 INFO L78 Accepts]: Start accepts. Automaton has 219 states. Word has length 435 [2018-07-25 08:55:30,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:30,766 INFO L225 Difference]: With dead ends: 439 [2018-07-25 08:55:30,766 INFO L226 Difference]: Without dead ends: 438 [2018-07-25 08:55:30,767 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=23871, Invalid=23871, Unknown=0, NotChecked=0, Total=47742 [2018-07-25 08:55:30,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2018-07-25 08:55:30,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 438. [2018-07-25 08:55:30,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 438 states. [2018-07-25 08:55:30,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 438 transitions. [2018-07-25 08:55:30,771 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 438 transitions. Word has length 435 [2018-07-25 08:55:30,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:30,772 INFO L472 AbstractCegarLoop]: Abstraction has 438 states and 438 transitions. [2018-07-25 08:55:30,772 INFO L473 AbstractCegarLoop]: Interpolant automaton has 219 states. [2018-07-25 08:55:30,772 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 438 transitions. [2018-07-25 08:55:30,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2018-07-25 08:55:30,773 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:30,773 INFO L354 BasicCegarLoop]: trace histogram [218, 217, 1, 1] [2018-07-25 08:55:30,773 INFO L415 AbstractCegarLoop]: === Iteration 218 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:30,774 INFO L82 PathProgramCache]: Analyzing trace with hash 212890322, now seen corresponding path program 217 times [2018-07-25 08:55:30,774 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:31,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:32,481 INFO L134 CoverageAnalysis]: Checked inductivity of 47306 backedges. 0 proven. 47306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:32,481 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:32,481 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [218] total 218 [2018-07-25 08:55:32,482 INFO L451 AbstractCegarLoop]: Interpolant automaton has 220 states [2018-07-25 08:55:32,485 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 220 interpolants. [2018-07-25 08:55:32,488 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24090, Invalid=24090, Unknown=0, NotChecked=0, Total=48180 [2018-07-25 08:55:32,488 INFO L87 Difference]: Start difference. First operand 438 states and 438 transitions. Second operand 220 states. [2018-07-25 08:55:33,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:33,993 INFO L93 Difference]: Finished difference Result 441 states and 441 transitions. [2018-07-25 08:55:33,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 220 states. [2018-07-25 08:55:33,994 INFO L78 Accepts]: Start accepts. Automaton has 220 states. Word has length 437 [2018-07-25 08:55:33,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:33,994 INFO L225 Difference]: With dead ends: 441 [2018-07-25 08:55:33,994 INFO L226 Difference]: Without dead ends: 440 [2018-07-25 08:55:33,998 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=24090, Invalid=24090, Unknown=0, NotChecked=0, Total=48180 [2018-07-25 08:55:33,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2018-07-25 08:55:34,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 440. [2018-07-25 08:55:34,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 440 states. [2018-07-25 08:55:34,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 440 transitions. [2018-07-25 08:55:34,002 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 440 transitions. Word has length 437 [2018-07-25 08:55:34,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:34,002 INFO L472 AbstractCegarLoop]: Abstraction has 440 states and 440 transitions. [2018-07-25 08:55:34,002 INFO L473 AbstractCegarLoop]: Interpolant automaton has 220 states. [2018-07-25 08:55:34,002 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 440 transitions. [2018-07-25 08:55:34,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2018-07-25 08:55:34,004 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:34,004 INFO L354 BasicCegarLoop]: trace histogram [219, 218, 1, 1] [2018-07-25 08:55:34,004 INFO L415 AbstractCegarLoop]: === Iteration 219 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:34,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1570829676, now seen corresponding path program 218 times [2018-07-25 08:55:34,004 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:34,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:35,791 INFO L134 CoverageAnalysis]: Checked inductivity of 47742 backedges. 0 proven. 47742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:35,792 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:35,792 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [219] total 219 [2018-07-25 08:55:35,792 INFO L451 AbstractCegarLoop]: Interpolant automaton has 221 states [2018-07-25 08:55:35,795 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 221 interpolants. [2018-07-25 08:55:35,798 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24310, Invalid=24310, Unknown=0, NotChecked=0, Total=48620 [2018-07-25 08:55:35,798 INFO L87 Difference]: Start difference. First operand 440 states and 440 transitions. Second operand 221 states. [2018-07-25 08:55:38,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:38,161 INFO L93 Difference]: Finished difference Result 443 states and 443 transitions. [2018-07-25 08:55:38,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 221 states. [2018-07-25 08:55:38,162 INFO L78 Accepts]: Start accepts. Automaton has 221 states. Word has length 439 [2018-07-25 08:55:38,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:38,163 INFO L225 Difference]: With dead ends: 443 [2018-07-25 08:55:38,163 INFO L226 Difference]: Without dead ends: 442 [2018-07-25 08:55:38,166 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=24310, Invalid=24310, Unknown=0, NotChecked=0, Total=48620 [2018-07-25 08:55:38,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2018-07-25 08:55:38,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 442. [2018-07-25 08:55:38,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2018-07-25 08:55:38,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 442 transitions. [2018-07-25 08:55:38,171 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 442 transitions. Word has length 439 [2018-07-25 08:55:38,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:38,171 INFO L472 AbstractCegarLoop]: Abstraction has 442 states and 442 transitions. [2018-07-25 08:55:38,171 INFO L473 AbstractCegarLoop]: Interpolant automaton has 221 states. [2018-07-25 08:55:38,171 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 442 transitions. [2018-07-25 08:55:38,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2018-07-25 08:55:38,172 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:38,172 INFO L354 BasicCegarLoop]: trace histogram [220, 219, 1, 1] [2018-07-25 08:55:38,173 INFO L415 AbstractCegarLoop]: === Iteration 220 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:38,173 INFO L82 PathProgramCache]: Analyzing trace with hash -2033796650, now seen corresponding path program 219 times [2018-07-25 08:55:38,173 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:38,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:39,985 INFO L134 CoverageAnalysis]: Checked inductivity of 48180 backedges. 0 proven. 48180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:39,985 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:39,986 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [220] total 220 [2018-07-25 08:55:39,986 INFO L451 AbstractCegarLoop]: Interpolant automaton has 222 states [2018-07-25 08:55:39,988 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 222 interpolants. [2018-07-25 08:55:39,990 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24531, Invalid=24531, Unknown=0, NotChecked=0, Total=49062 [2018-07-25 08:55:39,990 INFO L87 Difference]: Start difference. First operand 442 states and 442 transitions. Second operand 222 states. [2018-07-25 08:55:42,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:42,875 INFO L93 Difference]: Finished difference Result 445 states and 445 transitions. [2018-07-25 08:55:42,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 222 states. [2018-07-25 08:55:42,875 INFO L78 Accepts]: Start accepts. Automaton has 222 states. Word has length 441 [2018-07-25 08:55:42,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:42,876 INFO L225 Difference]: With dead ends: 445 [2018-07-25 08:55:42,876 INFO L226 Difference]: Without dead ends: 444 [2018-07-25 08:55:42,878 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=24531, Invalid=24531, Unknown=0, NotChecked=0, Total=49062 [2018-07-25 08:55:42,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2018-07-25 08:55:42,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 444. [2018-07-25 08:55:42,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 444 states. [2018-07-25 08:55:42,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 444 transitions. [2018-07-25 08:55:42,882 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 444 transitions. Word has length 441 [2018-07-25 08:55:42,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:42,883 INFO L472 AbstractCegarLoop]: Abstraction has 444 states and 444 transitions. [2018-07-25 08:55:42,883 INFO L473 AbstractCegarLoop]: Interpolant automaton has 222 states. [2018-07-25 08:55:42,883 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 444 transitions. [2018-07-25 08:55:42,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2018-07-25 08:55:42,884 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:42,884 INFO L354 BasicCegarLoop]: trace histogram [221, 220, 1, 1] [2018-07-25 08:55:42,884 INFO L415 AbstractCegarLoop]: === Iteration 221 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:42,884 INFO L82 PathProgramCache]: Analyzing trace with hash -268459880, now seen corresponding path program 220 times [2018-07-25 08:55:42,884 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:43,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:44,631 INFO L134 CoverageAnalysis]: Checked inductivity of 48620 backedges. 0 proven. 48620 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:44,632 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:44,632 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [221] total 221 [2018-07-25 08:55:44,632 INFO L451 AbstractCegarLoop]: Interpolant automaton has 223 states [2018-07-25 08:55:44,636 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 223 interpolants. [2018-07-25 08:55:44,638 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24753, Invalid=24753, Unknown=0, NotChecked=0, Total=49506 [2018-07-25 08:55:44,638 INFO L87 Difference]: Start difference. First operand 444 states and 444 transitions. Second operand 223 states. [2018-07-25 08:55:46,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:46,990 INFO L93 Difference]: Finished difference Result 447 states and 447 transitions. [2018-07-25 08:55:46,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2018-07-25 08:55:46,990 INFO L78 Accepts]: Start accepts. Automaton has 223 states. Word has length 443 [2018-07-25 08:55:46,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:46,990 INFO L225 Difference]: With dead ends: 447 [2018-07-25 08:55:46,991 INFO L226 Difference]: Without dead ends: 446 [2018-07-25 08:55:46,992 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=24753, Invalid=24753, Unknown=0, NotChecked=0, Total=49506 [2018-07-25 08:55:46,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2018-07-25 08:55:46,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 446. [2018-07-25 08:55:46,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2018-07-25 08:55:46,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 446 transitions. [2018-07-25 08:55:46,996 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 446 transitions. Word has length 443 [2018-07-25 08:55:46,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:46,996 INFO L472 AbstractCegarLoop]: Abstraction has 446 states and 446 transitions. [2018-07-25 08:55:46,996 INFO L473 AbstractCegarLoop]: Interpolant automaton has 223 states. [2018-07-25 08:55:46,996 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 446 transitions. [2018-07-25 08:55:46,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2018-07-25 08:55:46,998 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:46,998 INFO L354 BasicCegarLoop]: trace histogram [222, 221, 1, 1] [2018-07-25 08:55:46,998 INFO L415 AbstractCegarLoop]: === Iteration 222 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:46,998 INFO L82 PathProgramCache]: Analyzing trace with hash -291905830, now seen corresponding path program 221 times [2018-07-25 08:55:46,998 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:47,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:48,770 INFO L134 CoverageAnalysis]: Checked inductivity of 49062 backedges. 0 proven. 49062 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:48,770 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:48,771 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [222] total 222 [2018-07-25 08:55:48,771 INFO L451 AbstractCegarLoop]: Interpolant automaton has 224 states [2018-07-25 08:55:48,775 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 224 interpolants. [2018-07-25 08:55:48,777 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24976, Invalid=24976, Unknown=0, NotChecked=0, Total=49952 [2018-07-25 08:55:48,777 INFO L87 Difference]: Start difference. First operand 446 states and 446 transitions. Second operand 224 states. [2018-07-25 08:55:50,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:50,477 INFO L93 Difference]: Finished difference Result 449 states and 449 transitions. [2018-07-25 08:55:50,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 224 states. [2018-07-25 08:55:50,477 INFO L78 Accepts]: Start accepts. Automaton has 224 states. Word has length 445 [2018-07-25 08:55:50,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:50,478 INFO L225 Difference]: With dead ends: 449 [2018-07-25 08:55:50,478 INFO L226 Difference]: Without dead ends: 448 [2018-07-25 08:55:50,481 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=24976, Invalid=24976, Unknown=0, NotChecked=0, Total=49952 [2018-07-25 08:55:50,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2018-07-25 08:55:50,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 448. [2018-07-25 08:55:50,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 448 states. [2018-07-25 08:55:50,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 448 transitions. [2018-07-25 08:55:50,485 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 448 transitions. Word has length 445 [2018-07-25 08:55:50,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:50,485 INFO L472 AbstractCegarLoop]: Abstraction has 448 states and 448 transitions. [2018-07-25 08:55:50,485 INFO L473 AbstractCegarLoop]: Interpolant automaton has 224 states. [2018-07-25 08:55:50,485 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 448 transitions. [2018-07-25 08:55:50,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2018-07-25 08:55:50,487 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:50,487 INFO L354 BasicCegarLoop]: trace histogram [223, 222, 1, 1] [2018-07-25 08:55:50,487 INFO L415 AbstractCegarLoop]: === Iteration 223 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:50,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1348627300, now seen corresponding path program 222 times [2018-07-25 08:55:50,487 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:51,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:52,441 INFO L134 CoverageAnalysis]: Checked inductivity of 49506 backedges. 0 proven. 49506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:52,441 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:52,441 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [223] total 223 [2018-07-25 08:55:52,441 INFO L451 AbstractCegarLoop]: Interpolant automaton has 225 states [2018-07-25 08:55:52,445 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 225 interpolants. [2018-07-25 08:55:52,449 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25200, Invalid=25200, Unknown=0, NotChecked=0, Total=50400 [2018-07-25 08:55:52,449 INFO L87 Difference]: Start difference. First operand 448 states and 448 transitions. Second operand 225 states. [2018-07-25 08:55:53,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:53,637 INFO L93 Difference]: Finished difference Result 451 states and 451 transitions. [2018-07-25 08:55:53,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 225 states. [2018-07-25 08:55:53,638 INFO L78 Accepts]: Start accepts. Automaton has 225 states. Word has length 447 [2018-07-25 08:55:53,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:53,638 INFO L225 Difference]: With dead ends: 451 [2018-07-25 08:55:53,638 INFO L226 Difference]: Without dead ends: 450 [2018-07-25 08:55:53,642 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=25200, Invalid=25200, Unknown=0, NotChecked=0, Total=50400 [2018-07-25 08:55:53,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2018-07-25 08:55:53,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 450. [2018-07-25 08:55:53,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2018-07-25 08:55:53,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 450 transitions. [2018-07-25 08:55:53,646 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 450 transitions. Word has length 447 [2018-07-25 08:55:53,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:53,646 INFO L472 AbstractCegarLoop]: Abstraction has 450 states and 450 transitions. [2018-07-25 08:55:53,646 INFO L473 AbstractCegarLoop]: Interpolant automaton has 225 states. [2018-07-25 08:55:53,646 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 450 transitions. [2018-07-25 08:55:53,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2018-07-25 08:55:53,648 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:53,648 INFO L354 BasicCegarLoop]: trace histogram [224, 223, 1, 1] [2018-07-25 08:55:53,648 INFO L415 AbstractCegarLoop]: === Iteration 224 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:53,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1049289182, now seen corresponding path program 223 times [2018-07-25 08:55:53,648 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:54,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:55,638 INFO L134 CoverageAnalysis]: Checked inductivity of 49952 backedges. 0 proven. 49952 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:55,638 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:55,638 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [224] total 224 [2018-07-25 08:55:55,639 INFO L451 AbstractCegarLoop]: Interpolant automaton has 226 states [2018-07-25 08:55:55,641 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 226 interpolants. [2018-07-25 08:55:55,643 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25425, Invalid=25425, Unknown=0, NotChecked=0, Total=50850 [2018-07-25 08:55:55,643 INFO L87 Difference]: Start difference. First operand 450 states and 450 transitions. Second operand 226 states. [2018-07-25 08:55:56,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:56,535 INFO L93 Difference]: Finished difference Result 453 states and 453 transitions. [2018-07-25 08:55:56,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 226 states. [2018-07-25 08:55:56,535 INFO L78 Accepts]: Start accepts. Automaton has 226 states. Word has length 449 [2018-07-25 08:55:56,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:56,536 INFO L225 Difference]: With dead ends: 453 [2018-07-25 08:55:56,536 INFO L226 Difference]: Without dead ends: 452 [2018-07-25 08:55:56,538 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=25425, Invalid=25425, Unknown=0, NotChecked=0, Total=50850 [2018-07-25 08:55:56,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2018-07-25 08:55:56,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 452. [2018-07-25 08:55:56,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 452 states. [2018-07-25 08:55:56,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 452 transitions. [2018-07-25 08:55:56,542 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 452 transitions. Word has length 449 [2018-07-25 08:55:56,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:56,542 INFO L472 AbstractCegarLoop]: Abstraction has 452 states and 452 transitions. [2018-07-25 08:55:56,542 INFO L473 AbstractCegarLoop]: Interpolant automaton has 226 states. [2018-07-25 08:55:56,542 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 452 transitions. [2018-07-25 08:55:56,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2018-07-25 08:55:56,544 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:56,544 INFO L354 BasicCegarLoop]: trace histogram [225, 224, 1, 1] [2018-07-25 08:55:56,544 INFO L415 AbstractCegarLoop]: === Iteration 225 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:56,544 INFO L82 PathProgramCache]: Analyzing trace with hash -950409568, now seen corresponding path program 224 times [2018-07-25 08:55:56,544 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:57,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:58,589 INFO L134 CoverageAnalysis]: Checked inductivity of 50400 backedges. 0 proven. 50400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:58,589 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:58,590 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [225] total 225 [2018-07-25 08:55:58,590 INFO L451 AbstractCegarLoop]: Interpolant automaton has 227 states [2018-07-25 08:55:58,594 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 227 interpolants. [2018-07-25 08:55:58,597 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25651, Invalid=25651, Unknown=0, NotChecked=0, Total=51302 [2018-07-25 08:55:58,597 INFO L87 Difference]: Start difference. First operand 452 states and 452 transitions. Second operand 227 states. [2018-07-25 08:55:59,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:59,544 INFO L93 Difference]: Finished difference Result 455 states and 455 transitions. [2018-07-25 08:55:59,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 227 states. [2018-07-25 08:55:59,544 INFO L78 Accepts]: Start accepts. Automaton has 227 states. Word has length 451 [2018-07-25 08:55:59,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:59,545 INFO L225 Difference]: With dead ends: 455 [2018-07-25 08:55:59,545 INFO L226 Difference]: Without dead ends: 454 [2018-07-25 08:55:59,548 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=25651, Invalid=25651, Unknown=0, NotChecked=0, Total=51302 [2018-07-25 08:55:59,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2018-07-25 08:55:59,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 454. [2018-07-25 08:55:59,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 454 states. [2018-07-25 08:55:59,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 454 transitions. [2018-07-25 08:55:59,553 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 454 transitions. Word has length 451 [2018-07-25 08:55:59,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:59,553 INFO L472 AbstractCegarLoop]: Abstraction has 454 states and 454 transitions. [2018-07-25 08:55:59,553 INFO L473 AbstractCegarLoop]: Interpolant automaton has 227 states. [2018-07-25 08:55:59,553 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 454 transitions. [2018-07-25 08:55:59,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2018-07-25 08:55:59,587 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:59,587 INFO L354 BasicCegarLoop]: trace histogram [226, 225, 1, 1] [2018-07-25 08:55:59,587 INFO L415 AbstractCegarLoop]: === Iteration 226 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:59,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1484440290, now seen corresponding path program 225 times [2018-07-25 08:55:59,588 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:00,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:01,698 INFO L134 CoverageAnalysis]: Checked inductivity of 50850 backedges. 0 proven. 50850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:01,699 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:01,699 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [226] total 226 [2018-07-25 08:56:01,699 INFO L451 AbstractCegarLoop]: Interpolant automaton has 228 states [2018-07-25 08:56:01,703 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 228 interpolants. [2018-07-25 08:56:01,707 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25878, Invalid=25878, Unknown=0, NotChecked=0, Total=51756 [2018-07-25 08:56:01,707 INFO L87 Difference]: Start difference. First operand 454 states and 454 transitions. Second operand 228 states. [2018-07-25 08:56:02,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:02,654 INFO L93 Difference]: Finished difference Result 457 states and 457 transitions. [2018-07-25 08:56:02,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 228 states. [2018-07-25 08:56:02,654 INFO L78 Accepts]: Start accepts. Automaton has 228 states. Word has length 453 [2018-07-25 08:56:02,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:02,655 INFO L225 Difference]: With dead ends: 457 [2018-07-25 08:56:02,655 INFO L226 Difference]: Without dead ends: 456 [2018-07-25 08:56:02,658 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=25878, Invalid=25878, Unknown=0, NotChecked=0, Total=51756 [2018-07-25 08:56:02,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2018-07-25 08:56:02,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 456. [2018-07-25 08:56:02,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 456 states. [2018-07-25 08:56:02,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 456 transitions. [2018-07-25 08:56:02,664 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 456 transitions. Word has length 453 [2018-07-25 08:56:02,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:02,665 INFO L472 AbstractCegarLoop]: Abstraction has 456 states and 456 transitions. [2018-07-25 08:56:02,665 INFO L473 AbstractCegarLoop]: Interpolant automaton has 228 states. [2018-07-25 08:56:02,665 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 456 transitions. [2018-07-25 08:56:02,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2018-07-25 08:56:02,667 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:02,667 INFO L354 BasicCegarLoop]: trace histogram [227, 226, 1, 1] [2018-07-25 08:56:02,667 INFO L415 AbstractCegarLoop]: === Iteration 227 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:02,668 INFO L82 PathProgramCache]: Analyzing trace with hash 617977508, now seen corresponding path program 226 times [2018-07-25 08:56:02,668 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy Received shutdown request... [2018-07-25 08:56:03,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:03,230 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Timeout exceeded at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:215) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:201) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:919) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:262) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.getInterpolants(ManagedScript.java:193) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:284) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:204) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:210) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.FixedRefinementStrategy.getTraceCheck(FixedRefinementStrategy.java:130) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:220) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:194) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:309) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:151) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:120) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-07-25 08:56:03,234 INFO L168 Benchmark]: Toolchain (without parser) took 258656.63 ms. Allocated memory was 1.5 GB in the beginning and 3.4 GB in the end (delta: 1.9 GB). Free memory was 1.5 GB in the beginning and 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 325.4 MB. Max. memory is 7.1 GB. [2018-07-25 08:56:03,236 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:56:03,236 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.50 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:56:03,236 INFO L168 Benchmark]: Boogie Preprocessor took 21.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:56:03,237 INFO L168 Benchmark]: RCFGBuilder took 215.78 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-25 08:56:03,237 INFO L168 Benchmark]: TraceAbstraction took 258376.88 ms. Allocated memory was 1.5 GB in the beginning and 3.4 GB in the end (delta: 1.9 GB). Free memory was 1.5 GB in the beginning and 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 314.8 MB. Max. memory is 7.1 GB. [2018-07-25 08:56:03,239 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 38.50 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 21.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 215.78 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 258376.88 ms. Allocated memory was 1.5 GB in the beginning and 3.4 GB in the end (delta: 1.9 GB). Free memory was 1.5 GB in the beginning and 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 314.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Timeout exceeded de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Timeout exceeded: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:215) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/LargeConstant-ForwardSuccess.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_08-56-03-249.csv Completed graceful shutdown