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/real-life/divisibilityWithArray.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 08:36:06,519 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 08:36:06,521 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 08:36:06,533 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 08:36:06,534 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 08:36:06,535 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 08:36:06,536 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 08:36:06,538 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 08:36:06,540 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 08:36:06,541 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 08:36:06,542 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-07-25 08:36:06,557 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 08:36:06,558 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 08:36:06,562 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 08:36:06,563 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 08:36:06,564 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 08:36:06,565 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 08:36:06,568 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 08:36:06,568 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 08:36:06,570 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-25 08:36:06,574 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-07-25 08:36:06,596 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 08:36:06,598 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 08:36:06,599 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 08:36:06,599 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 08:36:06,600 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 08:36:06,600 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-25 08:36:06,600 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 08:36:06,600 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 08:36:06,670 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 08:36:06,689 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 08:36:06,692 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 08:36:06,694 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 08:36:06,695 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 08:36:06,695 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/divisibilityWithArray.bpl [2018-07-25 08:36:06,696 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/divisibilityWithArray.bpl' [2018-07-25 08:36:06,746 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 08:36:06,748 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 08:36:06,749 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 08:36:06,749 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 08:36:06,749 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 08:36:06,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "divisibilityWithArray.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:36:06" (1/1) ... [2018-07-25 08:36:06,785 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "divisibilityWithArray.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:36:06" (1/1) ... [2018-07-25 08:36:06,793 WARN L165 Inliner]: Program contained no entry procedure! [2018-07-25 08:36:06,794 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-07-25 08:36:06,794 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-07-25 08:36:06,796 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 08:36:06,797 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 08:36:06,797 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 08:36:06,797 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 08:36:06,809 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "divisibilityWithArray.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:36:06" (1/1) ... [2018-07-25 08:36:06,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "divisibilityWithArray.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:36:06" (1/1) ... [2018-07-25 08:36:06,810 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "divisibilityWithArray.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:36:06" (1/1) ... [2018-07-25 08:36:06,810 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "divisibilityWithArray.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:36:06" (1/1) ... [2018-07-25 08:36:06,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "divisibilityWithArray.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:36:06" (1/1) ... [2018-07-25 08:36:06,818 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "divisibilityWithArray.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:36:06" (1/1) ... [2018-07-25 08:36:06,819 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "divisibilityWithArray.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:36:06" (1/1) ... [2018-07-25 08:36:06,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 08:36:06,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 08:36:06,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 08:36:06,822 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 08:36:06,823 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "divisibilityWithArray.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:36:06" (1/1) ... [2018-07-25 08:36:06,912 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2018-07-25 08:36:06,912 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-25 08:36:06,913 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-25 08:36:07,046 INFO L270 CfgBuilder]: Using library mode [2018-07-25 08:36:07,047 INFO L202 PluginConnector]: Adding new model divisibilityWithArray.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:36:07 BoogieIcfgContainer [2018-07-25 08:36:07,047 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 08:36:07,048 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 08:36:07,048 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 08:36:07,052 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 08:36:07,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "divisibilityWithArray.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:36:06" (1/2) ... [2018-07-25 08:36:07,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d3ac20 and model type divisibilityWithArray.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 08:36:07, skipping insertion in model container [2018-07-25 08:36:07,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "divisibilityWithArray.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:36:07" (2/2) ... [2018-07-25 08:36:07,056 INFO L112 eAbstractionObserver]: Analyzing ICFG divisibilityWithArray.bpl [2018-07-25 08:36:07,067 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-25 08:36:07,076 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 08:36:07,129 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 08:36:07,130 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 08:36:07,130 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 08:36:07,131 INFO L376 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-25 08:36:07,131 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 08:36:07,131 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 08:36:07,131 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 08:36:07,132 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 08:36:07,132 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 08:36:07,147 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2018-07-25 08:36:07,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-07-25 08:36:07,157 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:07,158 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-07-25 08:36:07,160 INFO L415 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:07,166 INFO L82 PathProgramCache]: Analyzing trace with hash 29920, now seen corresponding path program 1 times [2018-07-25 08:36:07,174 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:07,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:07,426 WARN L169 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 19 [2018-07-25 08:36:07,453 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 08:36:07,458 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:36:07,459 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-25 08:36:07,468 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 08:36:07,486 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 08:36:07,487 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:36:07,490 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 4 states. [2018-07-25 08:36:07,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:07,539 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-07-25 08:36:07,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 08:36:07,541 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2018-07-25 08:36:07,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:07,553 INFO L225 Difference]: With dead ends: 11 [2018-07-25 08:36:07,553 INFO L226 Difference]: Without dead ends: 7 [2018-07-25 08:36:07,561 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:36:07,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-07-25 08:36:07,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2018-07-25 08:36:07,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-07-25 08:36:07,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-07-25 08:36:07,605 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 3 [2018-07-25 08:36:07,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:07,606 INFO L472 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-07-25 08:36:07,606 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 08:36:07,606 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-07-25 08:36:07,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-07-25 08:36:07,607 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:07,607 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-07-25 08:36:07,607 INFO L415 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:07,607 INFO L82 PathProgramCache]: Analyzing trace with hash 28754210, now seen corresponding path program 1 times [2018-07-25 08:36:07,608 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:07,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:07,882 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 08:36:07,882 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:07,882 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-25 08:36:07,884 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 08:36:07,885 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 08:36:07,885 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:36:07,886 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 6 states. [2018-07-25 08:36:07,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:07,957 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2018-07-25 08:36:07,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 08:36:07,960 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2018-07-25 08:36:07,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:07,961 INFO L225 Difference]: With dead ends: 10 [2018-07-25 08:36:07,961 INFO L226 Difference]: Without dead ends: 9 [2018-07-25 08:36:07,963 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:36:07,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-07-25 08:36:07,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2018-07-25 08:36:07,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-07-25 08:36:07,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-07-25 08:36:07,972 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 5 [2018-07-25 08:36:07,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:07,973 INFO L472 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-07-25 08:36:07,973 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 08:36:07,973 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-07-25 08:36:07,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-25 08:36:07,974 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:07,974 INFO L354 BasicCegarLoop]: trace histogram [3, 2, 1, 1] [2018-07-25 08:36:07,974 INFO L415 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:07,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1862993124, now seen corresponding path program 2 times [2018-07-25 08:36:07,975 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:07,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:08,179 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 08:36:08,180 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:08,180 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 08:36:08,181 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 08:36:08,181 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 08:36:08,181 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:36:08,182 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 7 states. [2018-07-25 08:36:08,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:08,222 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-07-25 08:36:08,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-25 08:36:08,223 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2018-07-25 08:36:08,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:08,223 INFO L225 Difference]: With dead ends: 12 [2018-07-25 08:36:08,223 INFO L226 Difference]: Without dead ends: 11 [2018-07-25 08:36:08,224 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:36:08,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-07-25 08:36:08,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2018-07-25 08:36:08,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-07-25 08:36:08,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-07-25 08:36:08,231 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2018-07-25 08:36:08,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:08,231 INFO L472 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-07-25 08:36:08,232 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 08:36:08,232 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-07-25 08:36:08,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-07-25 08:36:08,232 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:08,233 INFO L354 BasicCegarLoop]: trace histogram [4, 3, 1, 1] [2018-07-25 08:36:08,233 INFO L415 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:08,233 INFO L82 PathProgramCache]: Analyzing trace with hash -664969178, now seen corresponding path program 3 times [2018-07-25 08:36:08,234 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:08,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:08,420 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 08:36:08,421 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:08,421 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 08:36:08,423 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:36:08,423 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:36:08,423 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:36:08,424 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 8 states. [2018-07-25 08:36:08,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:08,493 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-07-25 08:36:08,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-25 08:36:08,493 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 9 [2018-07-25 08:36:08,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:08,494 INFO L225 Difference]: With dead ends: 14 [2018-07-25 08:36:08,494 INFO L226 Difference]: Without dead ends: 13 [2018-07-25 08:36:08,495 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:36:08,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-07-25 08:36:08,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2018-07-25 08:36:08,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-07-25 08:36:08,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-07-25 08:36:08,504 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2018-07-25 08:36:08,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:08,507 INFO L472 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-07-25 08:36:08,508 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:36:08,508 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-07-25 08:36:08,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-07-25 08:36:08,508 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:08,509 INFO L354 BasicCegarLoop]: trace histogram [5, 4, 1, 1] [2018-07-25 08:36:08,509 INFO L415 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:08,511 INFO L82 PathProgramCache]: Analyzing trace with hash 914748136, now seen corresponding path program 4 times [2018-07-25 08:36:08,511 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:08,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:08,700 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 08:36:08,701 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:08,701 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:36:08,703 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:36:08,703 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:36:08,703 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:36:08,704 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 9 states. [2018-07-25 08:36:08,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:08,764 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-07-25 08:36:08,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-25 08:36:08,765 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 11 [2018-07-25 08:36:08,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:08,766 INFO L225 Difference]: With dead ends: 16 [2018-07-25 08:36:08,766 INFO L226 Difference]: Without dead ends: 15 [2018-07-25 08:36:08,767 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:36:08,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-07-25 08:36:08,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2018-07-25 08:36:08,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-07-25 08:36:08,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-07-25 08:36:08,775 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-07-25 08:36:08,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:08,776 INFO L472 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-07-25 08:36:08,776 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:36:08,776 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-07-25 08:36:08,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-07-25 08:36:08,777 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:08,777 INFO L354 BasicCegarLoop]: trace histogram [6, 5, 1, 1] [2018-07-25 08:36:08,778 INFO L415 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:08,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1395335894, now seen corresponding path program 5 times [2018-07-25 08:36:08,778 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:08,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:08,918 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 08:36:08,919 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:08,919 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:36:08,919 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 08:36:08,920 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 08:36:08,921 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:36:08,922 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 10 states. [2018-07-25 08:36:09,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:09,005 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-07-25 08:36:09,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-25 08:36:09,005 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2018-07-25 08:36:09,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:09,006 INFO L225 Difference]: With dead ends: 18 [2018-07-25 08:36:09,007 INFO L226 Difference]: Without dead ends: 17 [2018-07-25 08:36:09,008 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:36:09,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-07-25 08:36:09,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2018-07-25 08:36:09,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-07-25 08:36:09,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-07-25 08:36:09,023 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2018-07-25 08:36:09,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:09,024 INFO L472 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-07-25 08:36:09,024 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 08:36:09,024 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-07-25 08:36:09,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-07-25 08:36:09,025 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:09,027 INFO L354 BasicCegarLoop]: trace histogram [7, 6, 1, 1] [2018-07-25 08:36:09,027 INFO L415 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:09,027 INFO L82 PathProgramCache]: Analyzing trace with hash -887996692, now seen corresponding path program 6 times [2018-07-25 08:36:09,028 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:09,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:09,186 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 08:36:09,186 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:09,187 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:36:09,187 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:36:09,187 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:36:09,188 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:36:09,188 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 11 states. [2018-07-25 08:36:09,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:09,273 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-07-25 08:36:09,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 08:36:09,274 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2018-07-25 08:36:09,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:09,274 INFO L225 Difference]: With dead ends: 20 [2018-07-25 08:36:09,275 INFO L226 Difference]: Without dead ends: 19 [2018-07-25 08:36:09,276 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:36:09,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-07-25 08:36:09,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2018-07-25 08:36:09,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-07-25 08:36:09,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-07-25 08:36:09,288 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2018-07-25 08:36:09,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:09,289 INFO L472 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-07-25 08:36:09,289 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 08:36:09,289 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-07-25 08:36:09,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-07-25 08:36:09,290 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:09,290 INFO L354 BasicCegarLoop]: trace histogram [8, 7, 1, 1] [2018-07-25 08:36:09,292 INFO L415 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:09,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1333671982, now seen corresponding path program 7 times [2018-07-25 08:36:09,293 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:09,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:09,468 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 08:36:09,468 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:09,469 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 08:36:09,469 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 08:36:09,470 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 08:36:09,471 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:36:09,471 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 12 states. [2018-07-25 08:36:09,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:09,560 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-07-25 08:36:09,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-25 08:36:09,561 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 17 [2018-07-25 08:36:09,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:09,562 INFO L225 Difference]: With dead ends: 22 [2018-07-25 08:36:09,564 INFO L226 Difference]: Without dead ends: 21 [2018-07-25 08:36:09,564 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:36:09,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-07-25 08:36:09,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2018-07-25 08:36:09,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-07-25 08:36:09,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-07-25 08:36:09,577 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 17 [2018-07-25 08:36:09,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:09,578 INFO L472 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-07-25 08:36:09,578 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 08:36:09,579 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-07-25 08:36:09,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-07-25 08:36:09,581 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:09,582 INFO L354 BasicCegarLoop]: trace histogram [9, 8, 1, 1] [2018-07-25 08:36:09,582 INFO L415 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:09,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1758521584, now seen corresponding path program 8 times [2018-07-25 08:36:09,583 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:09,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:09,772 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 08:36:09,772 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:09,773 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 08:36:09,773 INFO L451 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-25 08:36:09,773 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-25 08:36:09,774 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2018-07-25 08:36:09,774 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 13 states. [2018-07-25 08:36:09,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:09,876 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-07-25 08:36:09,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 08:36:09,876 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 19 [2018-07-25 08:36:09,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:09,877 INFO L225 Difference]: With dead ends: 24 [2018-07-25 08:36:09,877 INFO L226 Difference]: Without dead ends: 23 [2018-07-25 08:36:09,878 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2018-07-25 08:36:09,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-07-25 08:36:09,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2018-07-25 08:36:09,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-07-25 08:36:09,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-07-25 08:36:09,891 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 19 [2018-07-25 08:36:09,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:09,891 INFO L472 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-07-25 08:36:09,891 INFO L473 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-25 08:36:09,892 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-07-25 08:36:09,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-07-25 08:36:09,892 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:09,893 INFO L354 BasicCegarLoop]: trace histogram [10, 9, 1, 1] [2018-07-25 08:36:09,893 INFO L415 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:09,893 INFO L82 PathProgramCache]: Analyzing trace with hash 2017095986, now seen corresponding path program 9 times [2018-07-25 08:36:09,894 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:09,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:10,058 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 08:36:10,059 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:10,059 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-07-25 08:36:10,059 INFO L451 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-25 08:36:10,060 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-25 08:36:10,060 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:36:10,060 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 14 states. [2018-07-25 08:36:10,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:10,183 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-07-25 08:36:10,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-25 08:36:10,183 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 21 [2018-07-25 08:36:10,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:10,184 INFO L225 Difference]: With dead ends: 26 [2018-07-25 08:36:10,185 INFO L226 Difference]: Without dead ends: 25 [2018-07-25 08:36:10,186 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:36:10,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-07-25 08:36:10,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2018-07-25 08:36:10,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-07-25 08:36:10,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-07-25 08:36:10,201 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 21 [2018-07-25 08:36:10,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:10,201 INFO L472 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-07-25 08:36:10,202 INFO L473 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-25 08:36:10,202 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-07-25 08:36:10,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-07-25 08:36:10,203 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:10,203 INFO L354 BasicCegarLoop]: trace histogram [11, 10, 1, 1] [2018-07-25 08:36:10,204 INFO L415 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:10,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1398993140, now seen corresponding path program 10 times [2018-07-25 08:36:10,204 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:10,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:10,431 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 08:36:10,431 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:10,432 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-07-25 08:36:10,432 INFO L451 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-25 08:36:10,432 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-25 08:36:10,433 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2018-07-25 08:36:10,433 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 15 states. [2018-07-25 08:36:10,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:10,588 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-07-25 08:36:10,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-25 08:36:10,588 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 23 [2018-07-25 08:36:10,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:10,589 INFO L225 Difference]: With dead ends: 28 [2018-07-25 08:36:10,589 INFO L226 Difference]: Without dead ends: 27 [2018-07-25 08:36:10,590 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2018-07-25 08:36:10,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-07-25 08:36:10,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2018-07-25 08:36:10,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-07-25 08:36:10,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-07-25 08:36:10,607 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 23 [2018-07-25 08:36:10,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:10,607 INFO L472 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-07-25 08:36:10,608 INFO L473 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-25 08:36:10,608 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-07-25 08:36:10,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 08:36:10,609 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:10,609 INFO L354 BasicCegarLoop]: trace histogram [12, 11, 1, 1] [2018-07-25 08:36:10,609 INFO L415 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:10,610 INFO L82 PathProgramCache]: Analyzing trace with hash 107644982, now seen corresponding path program 11 times [2018-07-25 08:36:10,610 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:10,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:10,807 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 08:36:10,808 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:10,808 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-07-25 08:36:10,808 INFO L451 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-25 08:36:10,809 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-25 08:36:10,809 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2018-07-25 08:36:10,809 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 16 states. [2018-07-25 08:36:10,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:10,954 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2018-07-25 08:36:10,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 08:36:10,955 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2018-07-25 08:36:10,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:10,956 INFO L225 Difference]: With dead ends: 30 [2018-07-25 08:36:10,956 INFO L226 Difference]: Without dead ends: 29 [2018-07-25 08:36:10,957 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2018-07-25 08:36:10,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-07-25 08:36:10,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2018-07-25 08:36:10,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-07-25 08:36:10,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-07-25 08:36:10,978 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 25 [2018-07-25 08:36:10,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:10,979 INFO L472 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-07-25 08:36:10,979 INFO L473 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-25 08:36:10,979 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-07-25 08:36:10,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-07-25 08:36:10,980 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:10,980 INFO L354 BasicCegarLoop]: trace histogram [13, 12, 1, 1] [2018-07-25 08:36:10,981 INFO L415 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:10,981 INFO L82 PathProgramCache]: Analyzing trace with hash 367613688, now seen corresponding path program 12 times [2018-07-25 08:36:10,981 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:10,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:11,186 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 08:36:11,187 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:11,187 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-25 08:36:11,187 INFO L451 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-25 08:36:11,188 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-25 08:36:11,188 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2018-07-25 08:36:11,188 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 17 states. [2018-07-25 08:36:11,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:11,363 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2018-07-25 08:36:11,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-25 08:36:11,364 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 27 [2018-07-25 08:36:11,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:11,365 INFO L225 Difference]: With dead ends: 32 [2018-07-25 08:36:11,365 INFO L226 Difference]: Without dead ends: 31 [2018-07-25 08:36:11,365 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2018-07-25 08:36:11,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-07-25 08:36:11,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2018-07-25 08:36:11,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-07-25 08:36:11,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-07-25 08:36:11,385 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 27 [2018-07-25 08:36:11,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:11,386 INFO L472 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-07-25 08:36:11,386 INFO L473 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-25 08:36:11,386 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-07-25 08:36:11,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-25 08:36:11,387 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:11,387 INFO L354 BasicCegarLoop]: trace histogram [14, 13, 1, 1] [2018-07-25 08:36:11,387 INFO L415 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:11,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1089436986, now seen corresponding path program 13 times [2018-07-25 08:36:11,388 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:11,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:11,761 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 08:36:11,762 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:11,762 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-07-25 08:36:11,763 INFO L451 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-25 08:36:11,763 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-25 08:36:11,763 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2018-07-25 08:36:11,764 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 18 states. [2018-07-25 08:36:11,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:11,962 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-07-25 08:36:11,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 08:36:11,962 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 29 [2018-07-25 08:36:11,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:11,963 INFO L225 Difference]: With dead ends: 34 [2018-07-25 08:36:11,963 INFO L226 Difference]: Without dead ends: 33 [2018-07-25 08:36:11,964 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2018-07-25 08:36:11,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-07-25 08:36:11,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2018-07-25 08:36:11,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-07-25 08:36:11,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-07-25 08:36:11,992 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 29 [2018-07-25 08:36:11,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:11,993 INFO L472 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-07-25 08:36:11,993 INFO L473 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-25 08:36:11,994 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-07-25 08:36:11,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-07-25 08:36:11,995 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:11,995 INFO L354 BasicCegarLoop]: trace histogram [15, 14, 1, 1] [2018-07-25 08:36:11,995 INFO L415 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:11,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1023075588, now seen corresponding path program 14 times [2018-07-25 08:36:11,996 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:12,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:12,266 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 08:36:12,267 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:12,267 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-07-25 08:36:12,268 INFO L451 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-25 08:36:12,268 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-25 08:36:12,268 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2018-07-25 08:36:12,269 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 19 states. [2018-07-25 08:36:12,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:12,507 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2018-07-25 08:36:12,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-25 08:36:12,507 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 31 [2018-07-25 08:36:12,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:12,508 INFO L225 Difference]: With dead ends: 36 [2018-07-25 08:36:12,508 INFO L226 Difference]: Without dead ends: 35 [2018-07-25 08:36:12,510 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2018-07-25 08:36:12,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-07-25 08:36:12,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2018-07-25 08:36:12,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-07-25 08:36:12,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-07-25 08:36:12,538 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 31 [2018-07-25 08:36:12,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:12,539 INFO L472 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2018-07-25 08:36:12,539 INFO L473 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-25 08:36:12,539 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-07-25 08:36:12,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-07-25 08:36:12,543 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:12,543 INFO L354 BasicCegarLoop]: trace histogram [16, 15, 1, 1] [2018-07-25 08:36:12,544 INFO L415 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:12,544 INFO L82 PathProgramCache]: Analyzing trace with hash 371871806, now seen corresponding path program 15 times [2018-07-25 08:36:12,544 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:12,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:12,801 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 08:36:12,801 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:12,801 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-07-25 08:36:12,802 INFO L451 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-25 08:36:12,802 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-25 08:36:12,805 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=342, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:36:12,805 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 20 states. [2018-07-25 08:36:13,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:13,010 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-07-25 08:36:13,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 08:36:13,011 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 33 [2018-07-25 08:36:13,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:13,011 INFO L225 Difference]: With dead ends: 38 [2018-07-25 08:36:13,012 INFO L226 Difference]: Without dead ends: 37 [2018-07-25 08:36:13,012 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=342, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:36:13,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-07-25 08:36:13,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2018-07-25 08:36:13,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-07-25 08:36:13,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-07-25 08:36:13,036 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 33 [2018-07-25 08:36:13,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:13,036 INFO L472 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-07-25 08:36:13,037 INFO L473 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-25 08:36:13,037 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-07-25 08:36:13,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-07-25 08:36:13,037 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:13,038 INFO L354 BasicCegarLoop]: trace histogram [17, 16, 1, 1] [2018-07-25 08:36:13,038 INFO L415 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:13,038 INFO L82 PathProgramCache]: Analyzing trace with hash 886521088, now seen corresponding path program 16 times [2018-07-25 08:36:13,038 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:13,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:13,283 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 08:36:13,284 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:13,284 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-25 08:36:13,284 INFO L451 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-07-25 08:36:13,284 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-07-25 08:36:13,285 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=380, Unknown=0, NotChecked=0, Total=420 [2018-07-25 08:36:13,285 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 21 states. [2018-07-25 08:36:13,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:13,538 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2018-07-25 08:36:13,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-25 08:36:13,538 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 35 [2018-07-25 08:36:13,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:13,539 INFO L225 Difference]: With dead ends: 40 [2018-07-25 08:36:13,539 INFO L226 Difference]: Without dead ends: 39 [2018-07-25 08:36:13,540 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=380, Unknown=0, NotChecked=0, Total=420 [2018-07-25 08:36:13,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-07-25 08:36:13,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2018-07-25 08:36:13,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-07-25 08:36:13,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2018-07-25 08:36:13,565 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 35 [2018-07-25 08:36:13,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:13,566 INFO L472 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2018-07-25 08:36:13,566 INFO L473 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-07-25 08:36:13,566 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2018-07-25 08:36:13,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-07-25 08:36:13,567 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:13,567 INFO L354 BasicCegarLoop]: trace histogram [18, 17, 1, 1] [2018-07-25 08:36:13,567 INFO L415 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:13,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1543242050, now seen corresponding path program 17 times [2018-07-25 08:36:13,568 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:13,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:13,821 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 08:36:13,822 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:13,822 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-07-25 08:36:13,822 INFO L451 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-25 08:36:13,823 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-25 08:36:13,823 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=420, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:36:13,823 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 22 states. [2018-07-25 08:36:14,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:14,103 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2018-07-25 08:36:14,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 08:36:14,103 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 37 [2018-07-25 08:36:14,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:14,104 INFO L225 Difference]: With dead ends: 42 [2018-07-25 08:36:14,104 INFO L226 Difference]: Without dead ends: 41 [2018-07-25 08:36:14,105 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=420, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:36:14,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-07-25 08:36:14,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2018-07-25 08:36:14,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-07-25 08:36:14,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2018-07-25 08:36:14,139 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 37 [2018-07-25 08:36:14,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:14,139 INFO L472 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2018-07-25 08:36:14,139 INFO L473 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-25 08:36:14,139 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2018-07-25 08:36:14,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-07-25 08:36:14,140 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:14,140 INFO L354 BasicCegarLoop]: trace histogram [19, 18, 1, 1] [2018-07-25 08:36:14,140 INFO L415 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:14,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1291894020, now seen corresponding path program 18 times [2018-07-25 08:36:14,141 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:14,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:14,393 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 08:36:14,394 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:14,394 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-07-25 08:36:14,396 INFO L451 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-07-25 08:36:14,396 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-07-25 08:36:14,396 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=462, Unknown=0, NotChecked=0, Total=506 [2018-07-25 08:36:14,397 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 23 states. [2018-07-25 08:36:14,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:14,681 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2018-07-25 08:36:14,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-25 08:36:14,682 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 39 [2018-07-25 08:36:14,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:14,683 INFO L225 Difference]: With dead ends: 44 [2018-07-25 08:36:14,683 INFO L226 Difference]: Without dead ends: 43 [2018-07-25 08:36:14,684 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=462, Unknown=0, NotChecked=0, Total=506 [2018-07-25 08:36:14,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-07-25 08:36:14,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2018-07-25 08:36:14,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-07-25 08:36:14,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2018-07-25 08:36:14,717 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 39 [2018-07-25 08:36:14,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:14,718 INFO L472 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2018-07-25 08:36:14,718 INFO L473 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-07-25 08:36:14,719 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2018-07-25 08:36:14,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-07-25 08:36:14,720 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:14,720 INFO L354 BasicCegarLoop]: trace histogram [20, 19, 1, 1] [2018-07-25 08:36:14,720 INFO L415 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:14,721 INFO L82 PathProgramCache]: Analyzing trace with hash 264605766, now seen corresponding path program 19 times [2018-07-25 08:36:14,721 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:14,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:15,044 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 08:36:15,045 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:15,045 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-07-25 08:36:15,046 INFO L451 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-25 08:36:15,046 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-25 08:36:15,046 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=506, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:36:15,047 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 24 states. [2018-07-25 08:36:15,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:15,407 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2018-07-25 08:36:15,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-25 08:36:15,408 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 41 [2018-07-25 08:36:15,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:15,408 INFO L225 Difference]: With dead ends: 46 [2018-07-25 08:36:15,409 INFO L226 Difference]: Without dead ends: 45 [2018-07-25 08:36:15,410 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=506, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:36:15,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-07-25 08:36:15,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2018-07-25 08:36:15,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-07-25 08:36:15,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2018-07-25 08:36:15,451 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 41 [2018-07-25 08:36:15,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:15,451 INFO L472 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2018-07-25 08:36:15,452 INFO L473 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-25 08:36:15,452 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2018-07-25 08:36:15,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-07-25 08:36:15,453 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:15,453 INFO L354 BasicCegarLoop]: trace histogram [21, 20, 1, 1] [2018-07-25 08:36:15,453 INFO L415 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:15,453 INFO L82 PathProgramCache]: Analyzing trace with hash 883071752, now seen corresponding path program 20 times [2018-07-25 08:36:15,454 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:15,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:15,759 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 08:36:15,759 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:15,759 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-25 08:36:15,760 INFO L451 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-07-25 08:36:15,762 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-07-25 08:36:15,762 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=552, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:36:15,762 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 25 states. [2018-07-25 08:36:16,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:16,078 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2018-07-25 08:36:16,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-07-25 08:36:16,078 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 43 [2018-07-25 08:36:16,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:16,079 INFO L225 Difference]: With dead ends: 48 [2018-07-25 08:36:16,079 INFO L226 Difference]: Without dead ends: 47 [2018-07-25 08:36:16,080 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=552, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:36:16,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-07-25 08:36:16,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2018-07-25 08:36:16,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-07-25 08:36:16,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2018-07-25 08:36:16,120 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 43 [2018-07-25 08:36:16,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:16,121 INFO L472 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2018-07-25 08:36:16,121 INFO L473 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-07-25 08:36:16,121 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2018-07-25 08:36:16,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-07-25 08:36:16,122 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:16,122 INFO L354 BasicCegarLoop]: trace histogram [22, 21, 1, 1] [2018-07-25 08:36:16,122 INFO L415 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:16,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1771569846, now seen corresponding path program 21 times [2018-07-25 08:36:16,123 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:16,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:16,408 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 08:36:16,408 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:16,409 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-07-25 08:36:16,409 INFO L451 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-25 08:36:16,409 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-25 08:36:16,410 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=600, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:36:16,410 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 26 states. [2018-07-25 08:36:16,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:16,736 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2018-07-25 08:36:16,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-25 08:36:16,736 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 45 [2018-07-25 08:36:16,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:16,737 INFO L225 Difference]: With dead ends: 50 [2018-07-25 08:36:16,737 INFO L226 Difference]: Without dead ends: 49 [2018-07-25 08:36:16,738 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=600, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:36:16,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-07-25 08:36:16,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2018-07-25 08:36:16,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-07-25 08:36:16,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2018-07-25 08:36:16,775 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 45 [2018-07-25 08:36:16,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:16,775 INFO L472 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2018-07-25 08:36:16,775 INFO L473 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-07-25 08:36:16,775 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2018-07-25 08:36:16,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-07-25 08:36:16,776 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:16,776 INFO L354 BasicCegarLoop]: trace histogram [23, 22, 1, 1] [2018-07-25 08:36:16,776 INFO L415 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:16,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1671571700, now seen corresponding path program 22 times [2018-07-25 08:36:16,777 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:16,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:17,090 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 08:36:17,090 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:17,090 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-07-25 08:36:17,091 INFO L451 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-07-25 08:36:17,091 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-07-25 08:36:17,091 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=650, Unknown=0, NotChecked=0, Total=702 [2018-07-25 08:36:17,092 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 27 states. [2018-07-25 08:36:17,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:17,442 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2018-07-25 08:36:17,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-07-25 08:36:17,443 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 47 [2018-07-25 08:36:17,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:17,443 INFO L225 Difference]: With dead ends: 52 [2018-07-25 08:36:17,443 INFO L226 Difference]: Without dead ends: 51 [2018-07-25 08:36:17,444 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=650, Unknown=0, NotChecked=0, Total=702 [2018-07-25 08:36:17,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-07-25 08:36:17,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2018-07-25 08:36:17,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-07-25 08:36:17,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2018-07-25 08:36:17,488 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 47 [2018-07-25 08:36:17,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:17,488 INFO L472 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2018-07-25 08:36:17,488 INFO L473 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-07-25 08:36:17,488 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2018-07-25 08:36:17,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-07-25 08:36:17,489 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:17,489 INFO L354 BasicCegarLoop]: trace histogram [24, 23, 1, 1] [2018-07-25 08:36:17,489 INFO L415 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:17,489 INFO L82 PathProgramCache]: Analyzing trace with hash -62633906, now seen corresponding path program 23 times [2018-07-25 08:36:17,490 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:17,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:17,821 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 08:36:17,822 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:17,822 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-07-25 08:36:17,822 INFO L451 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-25 08:36:17,823 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-25 08:36:17,823 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=702, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:36:17,824 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 28 states. [2018-07-25 08:36:18,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:18,210 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2018-07-25 08:36:18,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-25 08:36:18,210 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 49 [2018-07-25 08:36:18,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:18,211 INFO L225 Difference]: With dead ends: 54 [2018-07-25 08:36:18,211 INFO L226 Difference]: Without dead ends: 53 [2018-07-25 08:36:18,212 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=702, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:36:18,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-07-25 08:36:18,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2018-07-25 08:36:18,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-07-25 08:36:18,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2018-07-25 08:36:18,265 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 49 [2018-07-25 08:36:18,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:18,265 INFO L472 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2018-07-25 08:36:18,265 INFO L473 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-25 08:36:18,265 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2018-07-25 08:36:18,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-07-25 08:36:18,266 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:18,266 INFO L354 BasicCegarLoop]: trace histogram [25, 24, 1, 1] [2018-07-25 08:36:18,266 INFO L415 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:18,267 INFO L82 PathProgramCache]: Analyzing trace with hash -61640432, now seen corresponding path program 24 times [2018-07-25 08:36:18,267 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:18,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:18,652 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 08:36:18,653 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:18,653 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-25 08:36:18,653 INFO L451 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-07-25 08:36:18,654 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-07-25 08:36:18,654 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=756, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:36:18,655 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 29 states. [2018-07-25 08:36:19,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:19,109 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2018-07-25 08:36:19,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-25 08:36:19,110 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 51 [2018-07-25 08:36:19,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:19,110 INFO L225 Difference]: With dead ends: 56 [2018-07-25 08:36:19,111 INFO L226 Difference]: Without dead ends: 55 [2018-07-25 08:36:19,111 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=756, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:36:19,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-07-25 08:36:19,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2018-07-25 08:36:19,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-07-25 08:36:19,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2018-07-25 08:36:19,156 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 51 [2018-07-25 08:36:19,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:19,157 INFO L472 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2018-07-25 08:36:19,157 INFO L473 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-07-25 08:36:19,157 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2018-07-25 08:36:19,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-07-25 08:36:19,157 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:19,158 INFO L354 BasicCegarLoop]: trace histogram [26, 25, 1, 1] [2018-07-25 08:36:19,158 INFO L415 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:19,158 INFO L82 PathProgramCache]: Analyzing trace with hash 893088082, now seen corresponding path program 25 times [2018-07-25 08:36:19,158 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:19,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:19,520 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 08:36:19,521 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:19,521 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-07-25 08:36:19,521 INFO L451 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-07-25 08:36:19,522 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-07-25 08:36:19,522 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=812, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:36:19,523 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 30 states. [2018-07-25 08:36:19,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:19,938 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2018-07-25 08:36:19,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-25 08:36:19,938 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 53 [2018-07-25 08:36:19,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:19,939 INFO L225 Difference]: With dead ends: 58 [2018-07-25 08:36:19,939 INFO L226 Difference]: Without dead ends: 57 [2018-07-25 08:36:19,940 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=812, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:36:19,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-07-25 08:36:19,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2018-07-25 08:36:19,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-07-25 08:36:19,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2018-07-25 08:36:19,996 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 53 [2018-07-25 08:36:19,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:19,996 INFO L472 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2018-07-25 08:36:19,996 INFO L473 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-07-25 08:36:19,996 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2018-07-25 08:36:19,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-07-25 08:36:19,997 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:19,997 INFO L354 BasicCegarLoop]: trace histogram [27, 26, 1, 1] [2018-07-25 08:36:19,997 INFO L415 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:19,997 INFO L82 PathProgramCache]: Analyzing trace with hash -735811308, now seen corresponding path program 26 times [2018-07-25 08:36:19,998 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:20,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:20,352 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 08:36:20,353 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:20,353 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-07-25 08:36:20,353 INFO L451 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-07-25 08:36:20,353 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-07-25 08:36:20,354 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=870, Unknown=0, NotChecked=0, Total=930 [2018-07-25 08:36:20,354 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 31 states. [2018-07-25 08:36:20,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:20,777 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2018-07-25 08:36:20,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-07-25 08:36:20,778 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 55 [2018-07-25 08:36:20,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:20,778 INFO L225 Difference]: With dead ends: 60 [2018-07-25 08:36:20,779 INFO L226 Difference]: Without dead ends: 59 [2018-07-25 08:36:20,780 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=870, Unknown=0, NotChecked=0, Total=930 [2018-07-25 08:36:20,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-07-25 08:36:20,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2018-07-25 08:36:20,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-07-25 08:36:20,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2018-07-25 08:36:20,832 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 55 [2018-07-25 08:36:20,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:20,833 INFO L472 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2018-07-25 08:36:20,833 INFO L473 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-07-25 08:36:20,833 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2018-07-25 08:36:20,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-07-25 08:36:20,834 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:20,834 INFO L354 BasicCegarLoop]: trace histogram [28, 27, 1, 1] [2018-07-25 08:36:20,834 INFO L415 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:20,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1554937942, now seen corresponding path program 27 times [2018-07-25 08:36:20,835 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:20,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:21,212 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 08:36:21,212 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:21,212 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-07-25 08:36:21,213 INFO L451 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-25 08:36:21,213 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-25 08:36:21,213 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=930, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:36:21,214 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 32 states. [2018-07-25 08:36:21,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:21,675 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2018-07-25 08:36:21,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-07-25 08:36:21,675 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 57 [2018-07-25 08:36:21,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:21,676 INFO L225 Difference]: With dead ends: 62 [2018-07-25 08:36:21,676 INFO L226 Difference]: Without dead ends: 61 [2018-07-25 08:36:21,677 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=930, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:36:21,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-07-25 08:36:21,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2018-07-25 08:36:21,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-07-25 08:36:21,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2018-07-25 08:36:21,736 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 57 [2018-07-25 08:36:21,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:21,736 INFO L472 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2018-07-25 08:36:21,736 INFO L473 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-25 08:36:21,737 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2018-07-25 08:36:21,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-07-25 08:36:21,737 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:21,738 INFO L354 BasicCegarLoop]: trace histogram [29, 28, 1, 1] [2018-07-25 08:36:21,738 INFO L415 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:21,738 INFO L82 PathProgramCache]: Analyzing trace with hash -353255656, now seen corresponding path program 28 times [2018-07-25 08:36:21,738 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:21,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:22,133 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 08:36:22,133 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:22,134 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-25 08:36:22,134 INFO L451 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-07-25 08:36:22,134 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-07-25 08:36:22,135 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=992, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 08:36:22,135 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 33 states. [2018-07-25 08:36:22,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:22,655 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2018-07-25 08:36:22,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-25 08:36:22,656 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 59 [2018-07-25 08:36:22,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:22,656 INFO L225 Difference]: With dead ends: 64 [2018-07-25 08:36:22,657 INFO L226 Difference]: Without dead ends: 63 [2018-07-25 08:36:22,659 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=992, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 08:36:22,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-07-25 08:36:22,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2018-07-25 08:36:22,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-07-25 08:36:22,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2018-07-25 08:36:22,725 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 59 [2018-07-25 08:36:22,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:22,726 INFO L472 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2018-07-25 08:36:22,726 INFO L473 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-07-25 08:36:22,726 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2018-07-25 08:36:22,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-07-25 08:36:22,727 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:22,727 INFO L354 BasicCegarLoop]: trace histogram [30, 29, 1, 1] [2018-07-25 08:36:22,727 INFO L415 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:22,728 INFO L82 PathProgramCache]: Analyzing trace with hash -176267942, now seen corresponding path program 29 times [2018-07-25 08:36:22,728 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:22,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:23,197 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 08:36:23,198 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:23,198 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-07-25 08:36:23,198 INFO L451 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-07-25 08:36:23,199 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-07-25 08:36:23,199 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=1056, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:36:23,199 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 34 states. [2018-07-25 08:36:23,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:23,656 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2018-07-25 08:36:23,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-25 08:36:23,656 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 61 [2018-07-25 08:36:23,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:23,657 INFO L225 Difference]: With dead ends: 66 [2018-07-25 08:36:23,657 INFO L226 Difference]: Without dead ends: 65 [2018-07-25 08:36:23,658 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=1056, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:36:23,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-07-25 08:36:23,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2018-07-25 08:36:23,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-07-25 08:36:23,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2018-07-25 08:36:23,712 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 61 [2018-07-25 08:36:23,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:23,712 INFO L472 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2018-07-25 08:36:23,712 INFO L473 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-07-25 08:36:23,712 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2018-07-25 08:36:23,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-07-25 08:36:23,713 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:23,713 INFO L354 BasicCegarLoop]: trace histogram [31, 30, 1, 1] [2018-07-25 08:36:23,714 INFO L415 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:23,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1889766628, now seen corresponding path program 30 times [2018-07-25 08:36:23,715 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:23,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:24,081 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 08:36:24,082 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:24,082 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-07-25 08:36:24,082 INFO L451 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-07-25 08:36:24,083 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-07-25 08:36:24,083 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=1122, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 08:36:24,084 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 35 states. [2018-07-25 08:36:24,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:24,574 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2018-07-25 08:36:24,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-07-25 08:36:24,574 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 63 [2018-07-25 08:36:24,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:24,575 INFO L225 Difference]: With dead ends: 68 [2018-07-25 08:36:24,575 INFO L226 Difference]: Without dead ends: 67 [2018-07-25 08:36:24,577 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=1122, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 08:36:24,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-07-25 08:36:24,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2018-07-25 08:36:24,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-07-25 08:36:24,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2018-07-25 08:36:24,632 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 63 [2018-07-25 08:36:24,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:24,632 INFO L472 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2018-07-25 08:36:24,632 INFO L473 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-07-25 08:36:24,632 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2018-07-25 08:36:24,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-07-25 08:36:24,633 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:24,633 INFO L354 BasicCegarLoop]: trace histogram [32, 31, 1, 1] [2018-07-25 08:36:24,633 INFO L415 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:24,634 INFO L82 PathProgramCache]: Analyzing trace with hash 705437790, now seen corresponding path program 31 times [2018-07-25 08:36:24,634 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:24,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:25,004 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 08:36:25,005 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:25,005 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-07-25 08:36:25,006 INFO L451 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-25 08:36:25,006 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-25 08:36:25,007 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=1190, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 08:36:25,007 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 36 states. [2018-07-25 08:36:25,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:25,500 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2018-07-25 08:36:25,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-07-25 08:36:25,500 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 65 [2018-07-25 08:36:25,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:25,501 INFO L225 Difference]: With dead ends: 70 [2018-07-25 08:36:25,501 INFO L226 Difference]: Without dead ends: 69 [2018-07-25 08:36:25,502 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=1190, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 08:36:25,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-07-25 08:36:25,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2018-07-25 08:36:25,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-07-25 08:36:25,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2018-07-25 08:36:25,567 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 65 [2018-07-25 08:36:25,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:25,567 INFO L472 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2018-07-25 08:36:25,567 INFO L473 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-25 08:36:25,569 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2018-07-25 08:36:25,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-07-25 08:36:25,570 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:25,570 INFO L354 BasicCegarLoop]: trace histogram [33, 32, 1, 1] [2018-07-25 08:36:25,570 INFO L415 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:25,570 INFO L82 PathProgramCache]: Analyzing trace with hash -679115488, now seen corresponding path program 32 times [2018-07-25 08:36:25,571 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:25,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:26,009 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 08:36:26,010 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:26,010 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-25 08:36:26,010 INFO L451 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-07-25 08:36:26,011 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-07-25 08:36:26,011 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=1260, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 08:36:26,012 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 37 states. [2018-07-25 08:36:26,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:26,587 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2018-07-25 08:36:26,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-07-25 08:36:26,588 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 67 [2018-07-25 08:36:26,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:26,588 INFO L225 Difference]: With dead ends: 72 [2018-07-25 08:36:26,588 INFO L226 Difference]: Without dead ends: 71 [2018-07-25 08:36:26,590 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=1260, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 08:36:26,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-07-25 08:36:26,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2018-07-25 08:36:26,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-07-25 08:36:26,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2018-07-25 08:36:26,652 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 67 [2018-07-25 08:36:26,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:26,652 INFO L472 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2018-07-25 08:36:26,652 INFO L473 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-07-25 08:36:26,652 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2018-07-25 08:36:26,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-07-25 08:36:26,653 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:26,653 INFO L354 BasicCegarLoop]: trace histogram [34, 33, 1, 1] [2018-07-25 08:36:26,653 INFO L415 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:26,654 INFO L82 PathProgramCache]: Analyzing trace with hash 205046114, now seen corresponding path program 33 times [2018-07-25 08:36:26,654 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:26,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:27,051 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 08:36:27,052 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:27,052 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-07-25 08:36:27,052 INFO L451 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-07-25 08:36:27,053 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-07-25 08:36:27,053 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=1332, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:36:27,054 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 38 states. [2018-07-25 08:36:27,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:27,601 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2018-07-25 08:36:27,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-25 08:36:27,601 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 69 [2018-07-25 08:36:27,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:27,602 INFO L225 Difference]: With dead ends: 74 [2018-07-25 08:36:27,602 INFO L226 Difference]: Without dead ends: 73 [2018-07-25 08:36:27,603 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=1332, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:36:27,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-07-25 08:36:27,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2018-07-25 08:36:27,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-07-25 08:36:27,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2018-07-25 08:36:27,663 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 69 [2018-07-25 08:36:27,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:27,664 INFO L472 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2018-07-25 08:36:27,664 INFO L473 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-07-25 08:36:27,664 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2018-07-25 08:36:27,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-07-25 08:36:27,665 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:27,665 INFO L354 BasicCegarLoop]: trace histogram [35, 34, 1, 1] [2018-07-25 08:36:27,665 INFO L415 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:27,665 INFO L82 PathProgramCache]: Analyzing trace with hash -519178972, now seen corresponding path program 34 times [2018-07-25 08:36:27,666 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:27,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:28,089 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 08:36:28,090 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:28,090 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-07-25 08:36:28,090 INFO L451 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-07-25 08:36:28,091 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-07-25 08:36:28,091 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=1406, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 08:36:28,092 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 39 states. [2018-07-25 08:36:28,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:28,645 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2018-07-25 08:36:28,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-25 08:36:28,645 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 71 [2018-07-25 08:36:28,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:28,646 INFO L225 Difference]: With dead ends: 76 [2018-07-25 08:36:28,646 INFO L226 Difference]: Without dead ends: 75 [2018-07-25 08:36:28,647 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=1406, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 08:36:28,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-07-25 08:36:28,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2018-07-25 08:36:28,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-07-25 08:36:28,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2018-07-25 08:36:28,719 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 71 [2018-07-25 08:36:28,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:28,720 INFO L472 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2018-07-25 08:36:28,720 INFO L473 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-07-25 08:36:28,720 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2018-07-25 08:36:28,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-07-25 08:36:28,721 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:28,721 INFO L354 BasicCegarLoop]: trace histogram [36, 35, 1, 1] [2018-07-25 08:36:28,721 INFO L415 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:28,721 INFO L82 PathProgramCache]: Analyzing trace with hash -714784666, now seen corresponding path program 35 times [2018-07-25 08:36:28,721 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:28,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:29,132 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 08:36:29,132 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:29,133 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-07-25 08:36:29,133 INFO L451 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-25 08:36:29,133 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-25 08:36:29,134 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=1482, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 08:36:29,134 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand 40 states. [2018-07-25 08:36:29,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:29,719 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2018-07-25 08:36:29,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-07-25 08:36:29,719 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 73 [2018-07-25 08:36:29,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:29,720 INFO L225 Difference]: With dead ends: 78 [2018-07-25 08:36:29,720 INFO L226 Difference]: Without dead ends: 77 [2018-07-25 08:36:29,721 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=1482, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 08:36:29,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-07-25 08:36:29,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2018-07-25 08:36:29,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-07-25 08:36:29,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2018-07-25 08:36:29,793 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 73 [2018-07-25 08:36:29,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:29,793 INFO L472 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2018-07-25 08:36:29,794 INFO L473 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-25 08:36:29,794 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2018-07-25 08:36:29,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-07-25 08:36:29,795 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:29,795 INFO L354 BasicCegarLoop]: trace histogram [37, 36, 1, 1] [2018-07-25 08:36:29,795 INFO L415 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:29,795 INFO L82 PathProgramCache]: Analyzing trace with hash 286704424, now seen corresponding path program 36 times [2018-07-25 08:36:29,796 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:29,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:30,324 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 08:36:30,324 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:30,324 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-25 08:36:30,325 INFO L451 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-07-25 08:36:30,325 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-07-25 08:36:30,326 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=1560, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 08:36:30,326 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 41 states. [2018-07-25 08:36:30,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:30,858 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2018-07-25 08:36:30,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-07-25 08:36:30,859 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 75 [2018-07-25 08:36:30,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:30,859 INFO L225 Difference]: With dead ends: 80 [2018-07-25 08:36:30,860 INFO L226 Difference]: Without dead ends: 79 [2018-07-25 08:36:30,861 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=1560, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 08:36:30,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-07-25 08:36:30,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2018-07-25 08:36:30,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-07-25 08:36:30,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2018-07-25 08:36:30,927 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 75 [2018-07-25 08:36:30,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:30,928 INFO L472 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2018-07-25 08:36:30,928 INFO L473 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-07-25 08:36:30,928 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2018-07-25 08:36:30,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-07-25 08:36:30,929 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:30,929 INFO L354 BasicCegarLoop]: trace histogram [38, 37, 1, 1] [2018-07-25 08:36:30,929 INFO L415 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:30,929 INFO L82 PathProgramCache]: Analyzing trace with hash 645045610, now seen corresponding path program 37 times [2018-07-25 08:36:30,930 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:30,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:31,353 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 08:36:31,353 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:31,353 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-07-25 08:36:31,354 INFO L451 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-07-25 08:36:31,354 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-07-25 08:36:31,355 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=1640, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 08:36:31,355 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand 42 states. [2018-07-25 08:36:31,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:31,885 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2018-07-25 08:36:31,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-07-25 08:36:31,885 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 77 [2018-07-25 08:36:31,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:31,886 INFO L225 Difference]: With dead ends: 82 [2018-07-25 08:36:31,886 INFO L226 Difference]: Without dead ends: 81 [2018-07-25 08:36:31,888 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=1640, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 08:36:31,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-07-25 08:36:31,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2018-07-25 08:36:31,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-07-25 08:36:31,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2018-07-25 08:36:31,939 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 77 [2018-07-25 08:36:31,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:31,939 INFO L472 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2018-07-25 08:36:31,939 INFO L473 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-07-25 08:36:31,939 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2018-07-25 08:36:31,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-07-25 08:36:31,940 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:31,940 INFO L354 BasicCegarLoop]: trace histogram [39, 38, 1, 1] [2018-07-25 08:36:31,941 INFO L415 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:31,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1413541676, now seen corresponding path program 38 times [2018-07-25 08:36:31,941 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:31,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:32,397 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 08:36:32,397 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:32,397 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-07-25 08:36:32,398 INFO L451 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-07-25 08:36:32,398 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-07-25 08:36:32,399 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=1722, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 08:36:32,399 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 43 states. [2018-07-25 08:36:33,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:33,043 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2018-07-25 08:36:33,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-07-25 08:36:33,043 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 79 [2018-07-25 08:36:33,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:33,044 INFO L225 Difference]: With dead ends: 84 [2018-07-25 08:36:33,044 INFO L226 Difference]: Without dead ends: 83 [2018-07-25 08:36:33,046 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=1722, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 08:36:33,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-07-25 08:36:33,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2018-07-25 08:36:33,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-07-25 08:36:33,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2018-07-25 08:36:33,124 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 79 [2018-07-25 08:36:33,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:33,124 INFO L472 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2018-07-25 08:36:33,124 INFO L473 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-07-25 08:36:33,124 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2018-07-25 08:36:33,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-07-25 08:36:33,125 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:33,125 INFO L354 BasicCegarLoop]: trace histogram [40, 39, 1, 1] [2018-07-25 08:36:33,125 INFO L415 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:33,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1203886190, now seen corresponding path program 39 times [2018-07-25 08:36:33,126 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:33,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:33,619 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 08:36:33,619 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:33,619 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-07-25 08:36:33,620 INFO L451 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-25 08:36:33,620 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-25 08:36:33,621 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1806, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:36:33,621 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand 44 states. [2018-07-25 08:36:34,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:34,200 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2018-07-25 08:36:34,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-25 08:36:34,200 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 81 [2018-07-25 08:36:34,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:34,201 INFO L225 Difference]: With dead ends: 86 [2018-07-25 08:36:34,201 INFO L226 Difference]: Without dead ends: 85 [2018-07-25 08:36:34,202 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=1806, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:36:34,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-07-25 08:36:34,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 84. [2018-07-25 08:36:34,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-07-25 08:36:34,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2018-07-25 08:36:34,259 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 81 [2018-07-25 08:36:34,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:34,259 INFO L472 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2018-07-25 08:36:34,259 INFO L473 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-25 08:36:34,259 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2018-07-25 08:36:34,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-07-25 08:36:34,260 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:34,260 INFO L354 BasicCegarLoop]: trace histogram [41, 40, 1, 1] [2018-07-25 08:36:34,260 INFO L415 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:34,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1588427056, now seen corresponding path program 40 times [2018-07-25 08:36:34,260 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:34,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:34,734 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 08:36:34,734 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:34,734 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-25 08:36:34,735 INFO L451 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-07-25 08:36:34,735 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-07-25 08:36:34,736 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1892, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 08:36:34,736 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand 45 states. [2018-07-25 08:36:35,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:35,317 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2018-07-25 08:36:35,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-07-25 08:36:35,317 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 83 [2018-07-25 08:36:35,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:35,318 INFO L225 Difference]: With dead ends: 88 [2018-07-25 08:36:35,318 INFO L226 Difference]: Without dead ends: 87 [2018-07-25 08:36:35,319 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=1892, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 08:36:35,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-07-25 08:36:35,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2018-07-25 08:36:35,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-07-25 08:36:35,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2018-07-25 08:36:35,382 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 83 [2018-07-25 08:36:35,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:35,383 INFO L472 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2018-07-25 08:36:35,383 INFO L473 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-07-25 08:36:35,383 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2018-07-25 08:36:35,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-07-25 08:36:35,384 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:35,384 INFO L354 BasicCegarLoop]: trace histogram [42, 41, 1, 1] [2018-07-25 08:36:35,384 INFO L415 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:35,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1765011826, now seen corresponding path program 41 times [2018-07-25 08:36:35,384 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:35,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:35,842 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 08:36:35,843 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:35,843 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-07-25 08:36:35,843 INFO L451 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-07-25 08:36:35,844 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-07-25 08:36:35,844 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1980, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 08:36:35,845 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 46 states. [2018-07-25 08:36:36,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:36,517 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2018-07-25 08:36:36,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-07-25 08:36:36,517 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 85 [2018-07-25 08:36:36,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:36,518 INFO L225 Difference]: With dead ends: 90 [2018-07-25 08:36:36,518 INFO L226 Difference]: Without dead ends: 89 [2018-07-25 08:36:36,519 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=1980, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 08:36:36,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-07-25 08:36:36,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 88. [2018-07-25 08:36:36,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-07-25 08:36:36,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2018-07-25 08:36:36,576 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 85 [2018-07-25 08:36:36,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:36,577 INFO L472 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2018-07-25 08:36:36,577 INFO L473 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-07-25 08:36:36,577 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2018-07-25 08:36:36,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-07-25 08:36:36,578 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:36,578 INFO L354 BasicCegarLoop]: trace histogram [43, 42, 1, 1] [2018-07-25 08:36:36,578 INFO L415 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:36,578 INFO L82 PathProgramCache]: Analyzing trace with hash -335716044, now seen corresponding path program 42 times [2018-07-25 08:36:36,578 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:36,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:37,161 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 08:36:37,162 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:37,162 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-07-25 08:36:37,163 INFO L451 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-07-25 08:36:37,163 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-07-25 08:36:37,163 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=2070, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 08:36:37,164 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand 47 states. [2018-07-25 08:36:37,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:37,915 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2018-07-25 08:36:37,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-07-25 08:36:37,915 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 87 [2018-07-25 08:36:37,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:37,916 INFO L225 Difference]: With dead ends: 92 [2018-07-25 08:36:37,916 INFO L226 Difference]: Without dead ends: 91 [2018-07-25 08:36:37,917 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=2070, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 08:36:37,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-07-25 08:36:38,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 90. [2018-07-25 08:36:38,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-07-25 08:36:38,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2018-07-25 08:36:38,022 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 87 [2018-07-25 08:36:38,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:38,022 INFO L472 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2018-07-25 08:36:38,022 INFO L473 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-07-25 08:36:38,022 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2018-07-25 08:36:38,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-07-25 08:36:38,023 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:38,023 INFO L354 BasicCegarLoop]: trace histogram [44, 43, 1, 1] [2018-07-25 08:36:38,023 INFO L415 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:38,024 INFO L82 PathProgramCache]: Analyzing trace with hash -500569994, now seen corresponding path program 43 times [2018-07-25 08:36:38,024 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:38,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:38,484 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 08:36:38,484 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:38,485 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-07-25 08:36:38,485 INFO L451 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-25 08:36:38,485 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-25 08:36:38,485 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=2162, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 08:36:38,486 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand 48 states. [2018-07-25 08:36:39,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:39,051 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2018-07-25 08:36:39,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-07-25 08:36:39,051 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 89 [2018-07-25 08:36:39,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:39,052 INFO L225 Difference]: With dead ends: 94 [2018-07-25 08:36:39,052 INFO L226 Difference]: Without dead ends: 93 [2018-07-25 08:36:39,053 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=2162, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 08:36:39,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-07-25 08:36:39,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2018-07-25 08:36:39,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-07-25 08:36:39,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2018-07-25 08:36:39,136 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 89 [2018-07-25 08:36:39,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:39,137 INFO L472 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2018-07-25 08:36:39,137 INFO L473 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-25 08:36:39,137 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2018-07-25 08:36:39,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-07-25 08:36:39,138 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:39,138 INFO L354 BasicCegarLoop]: trace histogram [45, 44, 1, 1] [2018-07-25 08:36:39,138 INFO L415 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:39,138 INFO L82 PathProgramCache]: Analyzing trace with hash -11425992, now seen corresponding path program 44 times [2018-07-25 08:36:39,138 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:39,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:39,593 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 08:36:39,594 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:39,594 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-25 08:36:39,594 INFO L451 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-07-25 08:36:39,594 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-07-25 08:36:39,595 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=2256, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 08:36:39,595 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand 49 states. [2018-07-25 08:36:40,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:40,255 INFO L93 Difference]: Finished difference Result 96 states and 96 transitions. [2018-07-25 08:36:40,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-07-25 08:36:40,256 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 91 [2018-07-25 08:36:40,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:40,257 INFO L225 Difference]: With dead ends: 96 [2018-07-25 08:36:40,257 INFO L226 Difference]: Without dead ends: 95 [2018-07-25 08:36:40,257 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=2256, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 08:36:40,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-07-25 08:36:40,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2018-07-25 08:36:40,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-07-25 08:36:40,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2018-07-25 08:36:40,354 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 91 [2018-07-25 08:36:40,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:40,354 INFO L472 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2018-07-25 08:36:40,355 INFO L473 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-07-25 08:36:40,355 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2018-07-25 08:36:40,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-07-25 08:36:40,355 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:40,356 INFO L354 BasicCegarLoop]: trace histogram [46, 45, 1, 1] [2018-07-25 08:36:40,356 INFO L415 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:40,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1904524666, now seen corresponding path program 45 times [2018-07-25 08:36:40,356 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:40,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:40,832 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 08:36:40,832 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:40,832 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-07-25 08:36:40,832 INFO L451 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-07-25 08:36:40,833 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-07-25 08:36:40,833 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=2352, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:36:40,833 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand 50 states. [2018-07-25 08:36:41,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:41,423 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2018-07-25 08:36:41,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-07-25 08:36:41,424 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 93 [2018-07-25 08:36:41,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:41,424 INFO L225 Difference]: With dead ends: 98 [2018-07-25 08:36:41,425 INFO L226 Difference]: Without dead ends: 97 [2018-07-25 08:36:41,425 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=2352, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:36:41,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-07-25 08:36:41,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 96. [2018-07-25 08:36:41,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-07-25 08:36:41,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2018-07-25 08:36:41,492 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 93 [2018-07-25 08:36:41,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:41,493 INFO L472 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2018-07-25 08:36:41,493 INFO L473 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-07-25 08:36:41,493 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2018-07-25 08:36:41,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-07-25 08:36:41,493 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:41,494 INFO L354 BasicCegarLoop]: trace histogram [47, 46, 1, 1] [2018-07-25 08:36:41,494 INFO L415 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:41,494 INFO L82 PathProgramCache]: Analyzing trace with hash 592137020, now seen corresponding path program 46 times [2018-07-25 08:36:41,494 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:41,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:41,998 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 08:36:41,998 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:41,998 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-07-25 08:36:41,999 INFO L451 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-07-25 08:36:41,999 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-07-25 08:36:41,999 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=2450, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 08:36:41,999 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 51 states. [2018-07-25 08:36:42,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:42,651 INFO L93 Difference]: Finished difference Result 100 states and 100 transitions. [2018-07-25 08:36:42,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-07-25 08:36:42,651 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 95 [2018-07-25 08:36:42,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:42,652 INFO L225 Difference]: With dead ends: 100 [2018-07-25 08:36:42,652 INFO L226 Difference]: Without dead ends: 99 [2018-07-25 08:36:42,652 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=2450, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 08:36:42,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-07-25 08:36:42,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98. [2018-07-25 08:36:42,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-07-25 08:36:42,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2018-07-25 08:36:42,722 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 95 [2018-07-25 08:36:42,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:42,723 INFO L472 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2018-07-25 08:36:42,723 INFO L473 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-07-25 08:36:42,723 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2018-07-25 08:36:42,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-07-25 08:36:42,723 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:42,723 INFO L354 BasicCegarLoop]: trace histogram [48, 47, 1, 1] [2018-07-25 08:36:42,724 INFO L415 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:42,724 INFO L82 PathProgramCache]: Analyzing trace with hash 2107994238, now seen corresponding path program 47 times [2018-07-25 08:36:42,724 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:42,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:43,258 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 08:36:43,259 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:43,259 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-07-25 08:36:43,259 INFO L451 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-25 08:36:43,259 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-25 08:36:43,260 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=2550, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 08:36:43,260 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand 52 states. [2018-07-25 08:36:43,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:43,962 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2018-07-25 08:36:43,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-07-25 08:36:43,962 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 97 [2018-07-25 08:36:43,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:43,963 INFO L225 Difference]: With dead ends: 102 [2018-07-25 08:36:43,963 INFO L226 Difference]: Without dead ends: 101 [2018-07-25 08:36:43,964 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=2550, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 08:36:43,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-07-25 08:36:44,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 100. [2018-07-25 08:36:44,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-07-25 08:36:44,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2018-07-25 08:36:44,061 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 97 [2018-07-25 08:36:44,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:44,061 INFO L472 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2018-07-25 08:36:44,061 INFO L473 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-25 08:36:44,061 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2018-07-25 08:36:44,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-07-25 08:36:44,062 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:44,062 INFO L354 BasicCegarLoop]: trace histogram [49, 48, 1, 1] [2018-07-25 08:36:44,062 INFO L415 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:44,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1442099904, now seen corresponding path program 48 times [2018-07-25 08:36:44,062 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:44,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:44,616 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 08:36:44,616 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:44,616 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-25 08:36:44,617 INFO L451 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-07-25 08:36:44,617 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-07-25 08:36:44,617 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=2652, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 08:36:44,617 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand 53 states. [2018-07-25 08:36:45,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:45,282 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2018-07-25 08:36:45,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-07-25 08:36:45,282 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 99 [2018-07-25 08:36:45,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:45,283 INFO L225 Difference]: With dead ends: 104 [2018-07-25 08:36:45,283 INFO L226 Difference]: Without dead ends: 103 [2018-07-25 08:36:45,284 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=104, Invalid=2652, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 08:36:45,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-07-25 08:36:45,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2018-07-25 08:36:45,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-07-25 08:36:45,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2018-07-25 08:36:45,366 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 99 [2018-07-25 08:36:45,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:45,366 INFO L472 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2018-07-25 08:36:45,366 INFO L473 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-07-25 08:36:45,366 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2018-07-25 08:36:45,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-07-25 08:36:45,367 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:45,367 INFO L354 BasicCegarLoop]: trace histogram [50, 49, 1, 1] [2018-07-25 08:36:45,367 INFO L415 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:45,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1416429954, now seen corresponding path program 49 times [2018-07-25 08:36:45,368 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:45,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:45,853 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 08:36:45,853 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:45,853 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-07-25 08:36:45,854 INFO L451 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-07-25 08:36:45,854 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-07-25 08:36:45,854 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=2756, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 08:36:45,854 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 54 states. [2018-07-25 08:36:46,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:46,736 INFO L93 Difference]: Finished difference Result 106 states and 106 transitions. [2018-07-25 08:36:46,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-07-25 08:36:46,736 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 101 [2018-07-25 08:36:46,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:46,737 INFO L225 Difference]: With dead ends: 106 [2018-07-25 08:36:46,737 INFO L226 Difference]: Without dead ends: 105 [2018-07-25 08:36:46,737 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=2756, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 08:36:46,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-07-25 08:36:46,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 104. [2018-07-25 08:36:46,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-07-25 08:36:46,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2018-07-25 08:36:46,815 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 101 [2018-07-25 08:36:46,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:46,816 INFO L472 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2018-07-25 08:36:46,816 INFO L473 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-07-25 08:36:46,816 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2018-07-25 08:36:46,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-07-25 08:36:46,816 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:46,816 INFO L354 BasicCegarLoop]: trace histogram [51, 50, 1, 1] [2018-07-25 08:36:46,817 INFO L415 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:46,817 INFO L82 PathProgramCache]: Analyzing trace with hash -315445948, now seen corresponding path program 50 times [2018-07-25 08:36:46,817 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:46,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:47,295 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 08:36:47,296 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:47,296 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-07-25 08:36:47,296 INFO L451 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-07-25 08:36:47,297 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-07-25 08:36:47,297 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=2862, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 08:36:47,297 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand 55 states. [2018-07-25 08:36:48,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:48,040 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2018-07-25 08:36:48,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-07-25 08:36:48,040 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 103 [2018-07-25 08:36:48,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:48,041 INFO L225 Difference]: With dead ends: 108 [2018-07-25 08:36:48,041 INFO L226 Difference]: Without dead ends: 107 [2018-07-25 08:36:48,042 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=2862, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 08:36:48,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-07-25 08:36:48,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 106. [2018-07-25 08:36:48,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-07-25 08:36:48,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2018-07-25 08:36:48,134 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 103 [2018-07-25 08:36:48,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:48,134 INFO L472 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2018-07-25 08:36:48,134 INFO L473 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-07-25 08:36:48,134 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2018-07-25 08:36:48,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-07-25 08:36:48,135 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:48,135 INFO L354 BasicCegarLoop]: trace histogram [52, 51, 1, 1] [2018-07-25 08:36:48,135 INFO L415 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:48,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1799123078, now seen corresponding path program 51 times [2018-07-25 08:36:48,136 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:48,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:48,666 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 08:36:48,666 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:48,666 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-07-25 08:36:48,667 INFO L451 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-25 08:36:48,667 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-25 08:36:48,667 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=2970, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:36:48,667 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 56 states. [2018-07-25 08:36:49,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:49,460 INFO L93 Difference]: Finished difference Result 110 states and 110 transitions. [2018-07-25 08:36:49,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-07-25 08:36:49,460 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 105 [2018-07-25 08:36:49,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:49,461 INFO L225 Difference]: With dead ends: 110 [2018-07-25 08:36:49,461 INFO L226 Difference]: Without dead ends: 109 [2018-07-25 08:36:49,461 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=110, Invalid=2970, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:36:49,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-07-25 08:36:49,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 108. [2018-07-25 08:36:49,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-07-25 08:36:49,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 108 transitions. [2018-07-25 08:36:49,546 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 108 transitions. Word has length 105 [2018-07-25 08:36:49,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:49,547 INFO L472 AbstractCegarLoop]: Abstraction has 108 states and 108 transitions. [2018-07-25 08:36:49,547 INFO L473 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-25 08:36:49,547 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 108 transitions. [2018-07-25 08:36:49,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-07-25 08:36:49,548 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:49,548 INFO L354 BasicCegarLoop]: trace histogram [53, 52, 1, 1] [2018-07-25 08:36:49,548 INFO L415 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:49,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1914541240, now seen corresponding path program 52 times [2018-07-25 08:36:49,548 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:49,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:50,045 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 08:36:50,045 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:50,045 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-25 08:36:50,046 INFO L451 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-07-25 08:36:50,046 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-07-25 08:36:50,046 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=3080, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 08:36:50,046 INFO L87 Difference]: Start difference. First operand 108 states and 108 transitions. Second operand 57 states. [2018-07-25 08:36:50,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:50,922 INFO L93 Difference]: Finished difference Result 112 states and 112 transitions. [2018-07-25 08:36:50,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-07-25 08:36:50,922 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 107 [2018-07-25 08:36:50,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:50,923 INFO L225 Difference]: With dead ends: 112 [2018-07-25 08:36:50,923 INFO L226 Difference]: Without dead ends: 111 [2018-07-25 08:36:50,923 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=3080, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 08:36:50,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-07-25 08:36:51,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 110. [2018-07-25 08:36:51,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-07-25 08:36:51,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions. [2018-07-25 08:36:51,025 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 107 [2018-07-25 08:36:51,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:51,025 INFO L472 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions. [2018-07-25 08:36:51,025 INFO L473 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-07-25 08:36:51,025 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions. [2018-07-25 08:36:51,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-07-25 08:36:51,026 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:51,026 INFO L354 BasicCegarLoop]: trace histogram [54, 53, 1, 1] [2018-07-25 08:36:51,027 INFO L415 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:51,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1628127862, now seen corresponding path program 53 times [2018-07-25 08:36:51,027 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:51,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:51,706 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 08:36:51,707 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:51,707 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-07-25 08:36:51,707 INFO L451 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-07-25 08:36:51,707 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-07-25 08:36:51,708 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=3192, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:36:51,708 INFO L87 Difference]: Start difference. First operand 110 states and 110 transitions. Second operand 58 states. [2018-07-25 08:36:52,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:52,574 INFO L93 Difference]: Finished difference Result 114 states and 114 transitions. [2018-07-25 08:36:52,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-07-25 08:36:52,574 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 109 [2018-07-25 08:36:52,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:52,575 INFO L225 Difference]: With dead ends: 114 [2018-07-25 08:36:52,575 INFO L226 Difference]: Without dead ends: 113 [2018-07-25 08:36:52,576 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=114, Invalid=3192, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:36:52,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-07-25 08:36:52,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 112. [2018-07-25 08:36:52,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-07-25 08:36:52,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 112 transitions. [2018-07-25 08:36:52,682 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 112 transitions. Word has length 109 [2018-07-25 08:36:52,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:52,682 INFO L472 AbstractCegarLoop]: Abstraction has 112 states and 112 transitions. [2018-07-25 08:36:52,682 INFO L473 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-07-25 08:36:52,682 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 112 transitions. [2018-07-25 08:36:52,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-07-25 08:36:52,683 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:52,683 INFO L354 BasicCegarLoop]: trace histogram [55, 54, 1, 1] [2018-07-25 08:36:52,683 INFO L415 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:52,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1262778548, now seen corresponding path program 54 times [2018-07-25 08:36:52,683 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:52,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:53,519 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 08:36:53,520 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:53,520 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-07-25 08:36:53,520 INFO L451 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-07-25 08:36:53,520 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-07-25 08:36:53,521 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=3306, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 08:36:53,521 INFO L87 Difference]: Start difference. First operand 112 states and 112 transitions. Second operand 59 states. [2018-07-25 08:36:54,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:54,436 INFO L93 Difference]: Finished difference Result 116 states and 116 transitions. [2018-07-25 08:36:54,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-07-25 08:36:54,436 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 111 [2018-07-25 08:36:54,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:54,437 INFO L225 Difference]: With dead ends: 116 [2018-07-25 08:36:54,437 INFO L226 Difference]: Without dead ends: 115 [2018-07-25 08:36:54,438 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=116, Invalid=3306, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 08:36:54,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-07-25 08:36:54,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 114. [2018-07-25 08:36:54,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-07-25 08:36:54,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 114 transitions. [2018-07-25 08:36:54,548 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 114 transitions. Word has length 111 [2018-07-25 08:36:54,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:54,548 INFO L472 AbstractCegarLoop]: Abstraction has 114 states and 114 transitions. [2018-07-25 08:36:54,549 INFO L473 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-07-25 08:36:54,549 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 114 transitions. [2018-07-25 08:36:54,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-07-25 08:36:54,549 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:54,549 INFO L354 BasicCegarLoop]: trace histogram [56, 55, 1, 1] [2018-07-25 08:36:54,550 INFO L415 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:54,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1945561230, now seen corresponding path program 55 times [2018-07-25 08:36:54,550 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:54,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:55,159 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 08:36:55,160 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:55,160 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-07-25 08:36:55,160 INFO L451 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-25 08:36:55,161 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-25 08:36:55,161 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=3422, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 08:36:55,161 INFO L87 Difference]: Start difference. First operand 114 states and 114 transitions. Second operand 60 states. [2018-07-25 08:36:56,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:56,063 INFO L93 Difference]: Finished difference Result 118 states and 118 transitions. [2018-07-25 08:36:56,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-07-25 08:36:56,063 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 113 [2018-07-25 08:36:56,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:56,064 INFO L225 Difference]: With dead ends: 118 [2018-07-25 08:36:56,064 INFO L226 Difference]: Without dead ends: 117 [2018-07-25 08:36:56,065 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=118, Invalid=3422, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 08:36:56,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-07-25 08:36:56,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 116. [2018-07-25 08:36:56,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-07-25 08:36:56,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 116 transitions. [2018-07-25 08:36:56,181 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 116 transitions. Word has length 113 [2018-07-25 08:36:56,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:56,181 INFO L472 AbstractCegarLoop]: Abstraction has 116 states and 116 transitions. [2018-07-25 08:36:56,181 INFO L473 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-25 08:36:56,181 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 116 transitions. [2018-07-25 08:36:56,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-07-25 08:36:56,182 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:56,182 INFO L354 BasicCegarLoop]: trace histogram [57, 56, 1, 1] [2018-07-25 08:36:56,182 INFO L415 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:56,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1373569360, now seen corresponding path program 56 times [2018-07-25 08:36:56,182 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:56,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:56,749 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 08:36:56,749 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:56,749 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-25 08:36:56,750 INFO L451 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-07-25 08:36:56,750 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-07-25 08:36:56,750 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=3540, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 08:36:56,751 INFO L87 Difference]: Start difference. First operand 116 states and 116 transitions. Second operand 61 states. [2018-07-25 08:36:57,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:57,650 INFO L93 Difference]: Finished difference Result 120 states and 120 transitions. [2018-07-25 08:36:57,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-07-25 08:36:57,650 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 115 [2018-07-25 08:36:57,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:57,651 INFO L225 Difference]: With dead ends: 120 [2018-07-25 08:36:57,651 INFO L226 Difference]: Without dead ends: 119 [2018-07-25 08:36:57,652 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=3540, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 08:36:57,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-07-25 08:36:57,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 118. [2018-07-25 08:36:57,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-07-25 08:36:57,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 118 transitions. [2018-07-25 08:36:57,752 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 118 transitions. Word has length 115 [2018-07-25 08:36:57,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:57,753 INFO L472 AbstractCegarLoop]: Abstraction has 118 states and 118 transitions. [2018-07-25 08:36:57,753 INFO L473 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-07-25 08:36:57,753 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 118 transitions. [2018-07-25 08:36:57,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-07-25 08:36:57,754 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:57,754 INFO L354 BasicCegarLoop]: trace histogram [58, 57, 1, 1] [2018-07-25 08:36:57,754 INFO L415 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:57,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1445196178, now seen corresponding path program 57 times [2018-07-25 08:36:57,754 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:57,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:58,308 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 08:36:58,309 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:58,309 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-07-25 08:36:58,309 INFO L451 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-07-25 08:36:58,309 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-07-25 08:36:58,310 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=3660, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:36:58,310 INFO L87 Difference]: Start difference. First operand 118 states and 118 transitions. Second operand 62 states. [2018-07-25 08:36:59,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:59,371 INFO L93 Difference]: Finished difference Result 122 states and 122 transitions. [2018-07-25 08:36:59,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-07-25 08:36:59,372 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 117 [2018-07-25 08:36:59,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:59,372 INFO L225 Difference]: With dead ends: 122 [2018-07-25 08:36:59,372 INFO L226 Difference]: Without dead ends: 121 [2018-07-25 08:36:59,373 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=122, Invalid=3660, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:36:59,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-07-25 08:36:59,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 120. [2018-07-25 08:36:59,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2018-07-25 08:36:59,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 120 transitions. [2018-07-25 08:36:59,488 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 120 transitions. Word has length 117 [2018-07-25 08:36:59,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:59,488 INFO L472 AbstractCegarLoop]: Abstraction has 120 states and 120 transitions. [2018-07-25 08:36:59,488 INFO L473 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-07-25 08:36:59,488 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 120 transitions. [2018-07-25 08:36:59,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-07-25 08:36:59,489 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:59,489 INFO L354 BasicCegarLoop]: trace histogram [59, 58, 1, 1] [2018-07-25 08:36:59,489 INFO L415 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:59,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1559091540, now seen corresponding path program 58 times [2018-07-25 08:36:59,490 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:59,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:00,070 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 08:37:00,070 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:00,070 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-07-25 08:37:00,071 INFO L451 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-07-25 08:37:00,071 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-07-25 08:37:00,071 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=3782, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 08:37:00,072 INFO L87 Difference]: Start difference. First operand 120 states and 120 transitions. Second operand 63 states. [2018-07-25 08:37:00,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:00,964 INFO L93 Difference]: Finished difference Result 124 states and 124 transitions. [2018-07-25 08:37:00,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-07-25 08:37:00,964 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 119 [2018-07-25 08:37:00,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:00,965 INFO L225 Difference]: With dead ends: 124 [2018-07-25 08:37:00,965 INFO L226 Difference]: Without dead ends: 123 [2018-07-25 08:37:00,966 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=124, Invalid=3782, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 08:37:00,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-07-25 08:37:01,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 122. [2018-07-25 08:37:01,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-07-25 08:37:01,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 122 transitions. [2018-07-25 08:37:01,073 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 122 transitions. Word has length 119 [2018-07-25 08:37:01,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:01,074 INFO L472 AbstractCegarLoop]: Abstraction has 122 states and 122 transitions. [2018-07-25 08:37:01,074 INFO L473 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-07-25 08:37:01,074 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 122 transitions. [2018-07-25 08:37:01,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-07-25 08:37:01,074 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:01,074 INFO L354 BasicCegarLoop]: trace histogram [60, 59, 1, 1] [2018-07-25 08:37:01,075 INFO L415 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:01,075 INFO L82 PathProgramCache]: Analyzing trace with hash -656615274, now seen corresponding path program 59 times [2018-07-25 08:37:01,075 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:01,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:01,635 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 08:37:01,635 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:01,635 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-07-25 08:37:01,636 INFO L451 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-25 08:37:01,636 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-25 08:37:01,636 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=3906, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:37:01,636 INFO L87 Difference]: Start difference. First operand 122 states and 122 transitions. Second operand 64 states. [2018-07-25 08:37:02,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:02,578 INFO L93 Difference]: Finished difference Result 126 states and 126 transitions. [2018-07-25 08:37:02,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-07-25 08:37:02,578 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 121 [2018-07-25 08:37:02,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:02,579 INFO L225 Difference]: With dead ends: 126 [2018-07-25 08:37:02,579 INFO L226 Difference]: Without dead ends: 125 [2018-07-25 08:37:02,579 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=126, Invalid=3906, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:37:02,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-07-25 08:37:02,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 124. [2018-07-25 08:37:02,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-07-25 08:37:02,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 124 transitions. [2018-07-25 08:37:02,684 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 124 transitions. Word has length 121 [2018-07-25 08:37:02,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:02,685 INFO L472 AbstractCegarLoop]: Abstraction has 124 states and 124 transitions. [2018-07-25 08:37:02,685 INFO L473 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-25 08:37:02,685 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 124 transitions. [2018-07-25 08:37:02,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-07-25 08:37:02,686 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:02,686 INFO L354 BasicCegarLoop]: trace histogram [61, 60, 1, 1] [2018-07-25 08:37:02,686 INFO L415 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:02,686 INFO L82 PathProgramCache]: Analyzing trace with hash 352915288, now seen corresponding path program 60 times [2018-07-25 08:37:02,686 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:02,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:03,374 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 08:37:03,374 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:03,374 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-25 08:37:03,375 INFO L451 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-07-25 08:37:03,375 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-07-25 08:37:03,375 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=4032, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:37:03,375 INFO L87 Difference]: Start difference. First operand 124 states and 124 transitions. Second operand 65 states. [2018-07-25 08:37:04,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:04,391 INFO L93 Difference]: Finished difference Result 128 states and 128 transitions. [2018-07-25 08:37:04,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-07-25 08:37:04,392 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 123 [2018-07-25 08:37:04,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:04,392 INFO L225 Difference]: With dead ends: 128 [2018-07-25 08:37:04,392 INFO L226 Difference]: Without dead ends: 127 [2018-07-25 08:37:04,393 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=4032, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:37:04,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-07-25 08:37:04,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 126. [2018-07-25 08:37:04,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-07-25 08:37:04,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 126 transitions. [2018-07-25 08:37:04,500 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 126 transitions. Word has length 123 [2018-07-25 08:37:04,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:04,501 INFO L472 AbstractCegarLoop]: Abstraction has 126 states and 126 transitions. [2018-07-25 08:37:04,501 INFO L473 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-07-25 08:37:04,501 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 126 transitions. [2018-07-25 08:37:04,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-07-25 08:37:04,501 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:04,501 INFO L354 BasicCegarLoop]: trace histogram [62, 61, 1, 1] [2018-07-25 08:37:04,502 INFO L415 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:04,502 INFO L82 PathProgramCache]: Analyzing trace with hash -150823526, now seen corresponding path program 61 times [2018-07-25 08:37:04,502 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:04,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:05,125 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 08:37:05,125 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:05,126 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-07-25 08:37:05,126 INFO L451 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-07-25 08:37:05,126 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-07-25 08:37:05,127 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=4160, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:37:05,127 INFO L87 Difference]: Start difference. First operand 126 states and 126 transitions. Second operand 66 states. [2018-07-25 08:37:06,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:06,152 INFO L93 Difference]: Finished difference Result 130 states and 130 transitions. [2018-07-25 08:37:06,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-07-25 08:37:06,153 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 125 [2018-07-25 08:37:06,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:06,153 INFO L225 Difference]: With dead ends: 130 [2018-07-25 08:37:06,154 INFO L226 Difference]: Without dead ends: 129 [2018-07-25 08:37:06,154 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=130, Invalid=4160, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:37:06,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-07-25 08:37:06,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 128. [2018-07-25 08:37:06,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-07-25 08:37:06,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 128 transitions. [2018-07-25 08:37:06,263 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 128 transitions. Word has length 125 [2018-07-25 08:37:06,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:06,263 INFO L472 AbstractCegarLoop]: Abstraction has 128 states and 128 transitions. [2018-07-25 08:37:06,264 INFO L473 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-07-25 08:37:06,264 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 128 transitions. [2018-07-25 08:37:06,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-07-25 08:37:06,264 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:06,264 INFO L354 BasicCegarLoop]: trace histogram [63, 62, 1, 1] [2018-07-25 08:37:06,264 INFO L415 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:06,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1087480668, now seen corresponding path program 62 times [2018-07-25 08:37:06,265 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:06,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:07,001 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 08:37:07,001 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:07,001 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-07-25 08:37:07,001 INFO L451 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-07-25 08:37:07,002 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-07-25 08:37:07,002 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=4290, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 08:37:07,002 INFO L87 Difference]: Start difference. First operand 128 states and 128 transitions. Second operand 67 states. [2018-07-25 08:37:08,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:08,001 INFO L93 Difference]: Finished difference Result 132 states and 132 transitions. [2018-07-25 08:37:08,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-07-25 08:37:08,001 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 127 [2018-07-25 08:37:08,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:08,002 INFO L225 Difference]: With dead ends: 132 [2018-07-25 08:37:08,002 INFO L226 Difference]: Without dead ends: 131 [2018-07-25 08:37:08,002 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=132, Invalid=4290, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 08:37:08,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-07-25 08:37:08,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 130. [2018-07-25 08:37:08,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-07-25 08:37:08,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 130 transitions. [2018-07-25 08:37:08,116 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 130 transitions. Word has length 127 [2018-07-25 08:37:08,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:08,116 INFO L472 AbstractCegarLoop]: Abstraction has 130 states and 130 transitions. [2018-07-25 08:37:08,116 INFO L473 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-07-25 08:37:08,116 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 130 transitions. [2018-07-25 08:37:08,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-07-25 08:37:08,117 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:08,117 INFO L354 BasicCegarLoop]: trace histogram [64, 63, 1, 1] [2018-07-25 08:37:08,117 INFO L415 AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:08,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1391870110, now seen corresponding path program 63 times [2018-07-25 08:37:08,117 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:08,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:08,787 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 08:37:08,788 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:08,788 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-07-25 08:37:08,788 INFO L451 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-25 08:37:08,788 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-25 08:37:08,789 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=4422, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:37:08,789 INFO L87 Difference]: Start difference. First operand 130 states and 130 transitions. Second operand 68 states. [2018-07-25 08:37:09,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:09,917 INFO L93 Difference]: Finished difference Result 134 states and 134 transitions. [2018-07-25 08:37:09,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-07-25 08:37:09,917 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 129 [2018-07-25 08:37:09,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:09,918 INFO L225 Difference]: With dead ends: 134 [2018-07-25 08:37:09,918 INFO L226 Difference]: Without dead ends: 133 [2018-07-25 08:37:09,918 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=134, Invalid=4422, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:37:09,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-07-25 08:37:10,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 132. [2018-07-25 08:37:10,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-07-25 08:37:10,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 132 transitions. [2018-07-25 08:37:10,029 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 132 transitions. Word has length 129 [2018-07-25 08:37:10,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:10,029 INFO L472 AbstractCegarLoop]: Abstraction has 132 states and 132 transitions. [2018-07-25 08:37:10,029 INFO L473 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-25 08:37:10,029 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 132 transitions. [2018-07-25 08:37:10,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-07-25 08:37:10,030 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:10,030 INFO L354 BasicCegarLoop]: trace histogram [65, 64, 1, 1] [2018-07-25 08:37:10,031 INFO L415 AbstractCegarLoop]: === Iteration 65 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:10,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1852347744, now seen corresponding path program 64 times [2018-07-25 08:37:10,031 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:10,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:10,746 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 08:37:10,746 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:10,746 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-25 08:37:10,746 INFO L451 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-07-25 08:37:10,747 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-07-25 08:37:10,747 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=4556, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 08:37:10,747 INFO L87 Difference]: Start difference. First operand 132 states and 132 transitions. Second operand 69 states. [2018-07-25 08:37:11,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:11,903 INFO L93 Difference]: Finished difference Result 136 states and 136 transitions. [2018-07-25 08:37:11,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-07-25 08:37:11,904 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 131 [2018-07-25 08:37:11,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:11,905 INFO L225 Difference]: With dead ends: 136 [2018-07-25 08:37:11,905 INFO L226 Difference]: Without dead ends: 135 [2018-07-25 08:37:11,905 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=136, Invalid=4556, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 08:37:11,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-07-25 08:37:12,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 134. [2018-07-25 08:37:12,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-07-25 08:37:12,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 134 transitions. [2018-07-25 08:37:12,024 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 134 transitions. Word has length 131 [2018-07-25 08:37:12,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:12,024 INFO L472 AbstractCegarLoop]: Abstraction has 134 states and 134 transitions. [2018-07-25 08:37:12,025 INFO L473 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-07-25 08:37:12,025 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 134 transitions. [2018-07-25 08:37:12,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-07-25 08:37:12,025 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:12,026 INFO L354 BasicCegarLoop]: trace histogram [66, 65, 1, 1] [2018-07-25 08:37:12,026 INFO L415 AbstractCegarLoop]: === Iteration 66 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:12,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1989722530, now seen corresponding path program 65 times [2018-07-25 08:37:12,026 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:12,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:12,759 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 08:37:12,759 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:12,760 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-07-25 08:37:12,760 INFO L451 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-07-25 08:37:12,760 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-07-25 08:37:12,760 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=4692, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:37:12,761 INFO L87 Difference]: Start difference. First operand 134 states and 134 transitions. Second operand 70 states. [2018-07-25 08:37:13,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:13,884 INFO L93 Difference]: Finished difference Result 138 states and 138 transitions. [2018-07-25 08:37:13,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-07-25 08:37:13,884 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 133 [2018-07-25 08:37:13,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:13,885 INFO L225 Difference]: With dead ends: 138 [2018-07-25 08:37:13,885 INFO L226 Difference]: Without dead ends: 137 [2018-07-25 08:37:13,886 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=138, Invalid=4692, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:37:13,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-07-25 08:37:14,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 136. [2018-07-25 08:37:14,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-07-25 08:37:14,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 136 transitions. [2018-07-25 08:37:14,060 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 136 transitions. Word has length 133 [2018-07-25 08:37:14,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:14,060 INFO L472 AbstractCegarLoop]: Abstraction has 136 states and 136 transitions. [2018-07-25 08:37:14,060 INFO L473 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-07-25 08:37:14,061 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 136 transitions. [2018-07-25 08:37:14,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-07-25 08:37:14,061 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:14,061 INFO L354 BasicCegarLoop]: trace histogram [67, 66, 1, 1] [2018-07-25 08:37:14,062 INFO L415 AbstractCegarLoop]: === Iteration 67 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:14,062 INFO L82 PathProgramCache]: Analyzing trace with hash 862905700, now seen corresponding path program 66 times [2018-07-25 08:37:14,062 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:14,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:14,798 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 08:37:14,798 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:14,799 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-07-25 08:37:14,799 INFO L451 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-07-25 08:37:14,799 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-07-25 08:37:14,800 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=4830, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 08:37:14,800 INFO L87 Difference]: Start difference. First operand 136 states and 136 transitions. Second operand 71 states. [2018-07-25 08:37:16,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:16,097 INFO L93 Difference]: Finished difference Result 140 states and 140 transitions. [2018-07-25 08:37:16,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-07-25 08:37:16,097 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 135 [2018-07-25 08:37:16,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:16,098 INFO L225 Difference]: With dead ends: 140 [2018-07-25 08:37:16,098 INFO L226 Difference]: Without dead ends: 139 [2018-07-25 08:37:16,099 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=140, Invalid=4830, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 08:37:16,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-07-25 08:37:16,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 138. [2018-07-25 08:37:16,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-07-25 08:37:16,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 138 transitions. [2018-07-25 08:37:16,248 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 138 transitions. Word has length 135 [2018-07-25 08:37:16,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:16,248 INFO L472 AbstractCegarLoop]: Abstraction has 138 states and 138 transitions. [2018-07-25 08:37:16,248 INFO L473 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-07-25 08:37:16,248 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 138 transitions. [2018-07-25 08:37:16,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-07-25 08:37:16,249 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:16,249 INFO L354 BasicCegarLoop]: trace histogram [68, 67, 1, 1] [2018-07-25 08:37:16,250 INFO L415 AbstractCegarLoop]: === Iteration 68 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:16,250 INFO L82 PathProgramCache]: Analyzing trace with hash 323690662, now seen corresponding path program 67 times [2018-07-25 08:37:16,250 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:16,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:16,971 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 08:37:16,972 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:16,972 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-07-25 08:37:16,972 INFO L451 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-25 08:37:16,972 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-25 08:37:16,973 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=4970, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:37:16,973 INFO L87 Difference]: Start difference. First operand 138 states and 138 transitions. Second operand 72 states. [2018-07-25 08:37:18,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:18,233 INFO L93 Difference]: Finished difference Result 142 states and 142 transitions. [2018-07-25 08:37:18,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-07-25 08:37:18,234 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 137 [2018-07-25 08:37:18,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:18,235 INFO L225 Difference]: With dead ends: 142 [2018-07-25 08:37:18,235 INFO L226 Difference]: Without dead ends: 141 [2018-07-25 08:37:18,236 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=142, Invalid=4970, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:37:18,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-07-25 08:37:18,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 140. [2018-07-25 08:37:18,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-07-25 08:37:18,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 140 transitions. [2018-07-25 08:37:18,413 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 140 transitions. Word has length 137 [2018-07-25 08:37:18,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:18,413 INFO L472 AbstractCegarLoop]: Abstraction has 140 states and 140 transitions. [2018-07-25 08:37:18,413 INFO L473 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-25 08:37:18,413 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 140 transitions. [2018-07-25 08:37:18,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-07-25 08:37:18,413 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:18,414 INFO L354 BasicCegarLoop]: trace histogram [69, 68, 1, 1] [2018-07-25 08:37:18,414 INFO L415 AbstractCegarLoop]: === Iteration 69 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:18,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1829081960, now seen corresponding path program 68 times [2018-07-25 08:37:18,414 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:18,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:19,234 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 08:37:19,235 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:19,235 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-25 08:37:19,235 INFO L451 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-07-25 08:37:19,235 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-07-25 08:37:19,236 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=5112, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 08:37:19,236 INFO L87 Difference]: Start difference. First operand 140 states and 140 transitions. Second operand 73 states. [2018-07-25 08:37:20,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:20,583 INFO L93 Difference]: Finished difference Result 144 states and 144 transitions. [2018-07-25 08:37:20,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-07-25 08:37:20,583 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 139 [2018-07-25 08:37:20,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:20,584 INFO L225 Difference]: With dead ends: 144 [2018-07-25 08:37:20,584 INFO L226 Difference]: Without dead ends: 143 [2018-07-25 08:37:20,584 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=144, Invalid=5112, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 08:37:20,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-07-25 08:37:20,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 142. [2018-07-25 08:37:20,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-07-25 08:37:20,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 142 transitions. [2018-07-25 08:37:20,728 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 142 transitions. Word has length 139 [2018-07-25 08:37:20,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:20,728 INFO L472 AbstractCegarLoop]: Abstraction has 142 states and 142 transitions. [2018-07-25 08:37:20,728 INFO L473 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-07-25 08:37:20,729 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 142 transitions. [2018-07-25 08:37:20,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-07-25 08:37:20,729 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:20,729 INFO L354 BasicCegarLoop]: trace histogram [70, 69, 1, 1] [2018-07-25 08:37:20,730 INFO L415 AbstractCegarLoop]: === Iteration 70 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:20,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1106140586, now seen corresponding path program 69 times [2018-07-25 08:37:20,730 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:20,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:21,586 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 08:37:21,587 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:21,587 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-07-25 08:37:21,587 INFO L451 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-07-25 08:37:21,587 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-07-25 08:37:21,587 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=5256, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:37:21,588 INFO L87 Difference]: Start difference. First operand 142 states and 142 transitions. Second operand 74 states. [2018-07-25 08:37:22,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:22,826 INFO L93 Difference]: Finished difference Result 146 states and 146 transitions. [2018-07-25 08:37:22,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-07-25 08:37:22,826 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 141 [2018-07-25 08:37:22,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:22,827 INFO L225 Difference]: With dead ends: 146 [2018-07-25 08:37:22,827 INFO L226 Difference]: Without dead ends: 145 [2018-07-25 08:37:22,828 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=146, Invalid=5256, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:37:22,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-07-25 08:37:22,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 144. [2018-07-25 08:37:22,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-07-25 08:37:22,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 144 transitions. [2018-07-25 08:37:22,955 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 144 transitions. Word has length 141 [2018-07-25 08:37:22,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:22,956 INFO L472 AbstractCegarLoop]: Abstraction has 144 states and 144 transitions. [2018-07-25 08:37:22,956 INFO L473 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-07-25 08:37:22,956 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 144 transitions. [2018-07-25 08:37:22,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-07-25 08:37:22,956 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:22,956 INFO L354 BasicCegarLoop]: trace histogram [71, 70, 1, 1] [2018-07-25 08:37:22,956 INFO L415 AbstractCegarLoop]: === Iteration 71 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:22,957 INFO L82 PathProgramCache]: Analyzing trace with hash 2144182124, now seen corresponding path program 70 times [2018-07-25 08:37:22,957 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:23,818 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 08:37:23,819 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:23,819 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-07-25 08:37:23,819 INFO L451 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-07-25 08:37:23,819 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-07-25 08:37:23,819 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=5402, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 08:37:23,819 INFO L87 Difference]: Start difference. First operand 144 states and 144 transitions. Second operand 75 states. [2018-07-25 08:37:25,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:25,118 INFO L93 Difference]: Finished difference Result 148 states and 148 transitions. [2018-07-25 08:37:25,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-07-25 08:37:25,118 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 143 [2018-07-25 08:37:25,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:25,119 INFO L225 Difference]: With dead ends: 148 [2018-07-25 08:37:25,119 INFO L226 Difference]: Without dead ends: 147 [2018-07-25 08:37:25,119 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=148, Invalid=5402, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 08:37:25,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-07-25 08:37:25,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 146. [2018-07-25 08:37:25,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-07-25 08:37:25,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 146 transitions. [2018-07-25 08:37:25,254 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 146 transitions. Word has length 143 [2018-07-25 08:37:25,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:25,254 INFO L472 AbstractCegarLoop]: Abstraction has 146 states and 146 transitions. [2018-07-25 08:37:25,254 INFO L473 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-07-25 08:37:25,255 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 146 transitions. [2018-07-25 08:37:25,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-07-25 08:37:25,255 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:25,255 INFO L354 BasicCegarLoop]: trace histogram [72, 71, 1, 1] [2018-07-25 08:37:25,255 INFO L415 AbstractCegarLoop]: === Iteration 72 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:25,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1025279826, now seen corresponding path program 71 times [2018-07-25 08:37:25,256 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:25,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:25,988 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 08:37:25,988 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:25,988 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2018-07-25 08:37:25,988 INFO L451 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-25 08:37:25,989 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-25 08:37:25,989 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=5550, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:37:25,989 INFO L87 Difference]: Start difference. First operand 146 states and 146 transitions. Second operand 76 states. [2018-07-25 08:37:27,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:27,332 INFO L93 Difference]: Finished difference Result 150 states and 150 transitions. [2018-07-25 08:37:27,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-07-25 08:37:27,332 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 145 [2018-07-25 08:37:27,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:27,333 INFO L225 Difference]: With dead ends: 150 [2018-07-25 08:37:27,333 INFO L226 Difference]: Without dead ends: 149 [2018-07-25 08:37:27,334 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=150, Invalid=5550, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:37:27,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-07-25 08:37:27,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 148. [2018-07-25 08:37:27,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-07-25 08:37:27,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 148 transitions. [2018-07-25 08:37:27,488 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 148 transitions. Word has length 145 [2018-07-25 08:37:27,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:27,489 INFO L472 AbstractCegarLoop]: Abstraction has 148 states and 148 transitions. [2018-07-25 08:37:27,489 INFO L473 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-25 08:37:27,489 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 148 transitions. [2018-07-25 08:37:27,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-07-25 08:37:27,489 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:27,490 INFO L354 BasicCegarLoop]: trace histogram [73, 72, 1, 1] [2018-07-25 08:37:27,490 INFO L415 AbstractCegarLoop]: === Iteration 73 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:27,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1746400912, now seen corresponding path program 72 times [2018-07-25 08:37:27,490 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:27,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:28,348 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 08:37:28,348 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:28,348 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-25 08:37:28,349 INFO L451 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-07-25 08:37:28,349 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-07-25 08:37:28,349 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=5700, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 08:37:28,349 INFO L87 Difference]: Start difference. First operand 148 states and 148 transitions. Second operand 77 states. [2018-07-25 08:37:29,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:29,740 INFO L93 Difference]: Finished difference Result 152 states and 152 transitions. [2018-07-25 08:37:29,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-07-25 08:37:29,740 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 147 [2018-07-25 08:37:29,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:29,741 INFO L225 Difference]: With dead ends: 152 [2018-07-25 08:37:29,741 INFO L226 Difference]: Without dead ends: 151 [2018-07-25 08:37:29,741 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=152, Invalid=5700, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 08:37:29,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-07-25 08:37:29,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 150. [2018-07-25 08:37:29,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-07-25 08:37:29,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 150 transitions. [2018-07-25 08:37:29,892 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 150 transitions. Word has length 147 [2018-07-25 08:37:29,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:29,892 INFO L472 AbstractCegarLoop]: Abstraction has 150 states and 150 transitions. [2018-07-25 08:37:29,893 INFO L473 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-07-25 08:37:29,893 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 150 transitions. [2018-07-25 08:37:29,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-07-25 08:37:29,893 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:29,893 INFO L354 BasicCegarLoop]: trace histogram [74, 73, 1, 1] [2018-07-25 08:37:29,893 INFO L415 AbstractCegarLoop]: === Iteration 74 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:29,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1040937394, now seen corresponding path program 73 times [2018-07-25 08:37:29,894 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:29,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:30,742 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 08:37:30,742 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:30,742 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-07-25 08:37:30,742 INFO L451 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-07-25 08:37:30,743 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-07-25 08:37:30,743 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=5852, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 08:37:30,743 INFO L87 Difference]: Start difference. First operand 150 states and 150 transitions. Second operand 78 states. [2018-07-25 08:37:32,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:32,152 INFO L93 Difference]: Finished difference Result 154 states and 154 transitions. [2018-07-25 08:37:32,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-07-25 08:37:32,153 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 149 [2018-07-25 08:37:32,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:32,154 INFO L225 Difference]: With dead ends: 154 [2018-07-25 08:37:32,154 INFO L226 Difference]: Without dead ends: 153 [2018-07-25 08:37:32,154 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=154, Invalid=5852, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 08:37:32,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-07-25 08:37:32,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 152. [2018-07-25 08:37:32,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2018-07-25 08:37:32,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 152 transitions. [2018-07-25 08:37:32,308 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 152 transitions. Word has length 149 [2018-07-25 08:37:32,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:32,309 INFO L472 AbstractCegarLoop]: Abstraction has 152 states and 152 transitions. [2018-07-25 08:37:32,309 INFO L473 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-07-25 08:37:32,309 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 152 transitions. [2018-07-25 08:37:32,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-07-25 08:37:32,309 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:32,309 INFO L354 BasicCegarLoop]: trace histogram [75, 74, 1, 1] [2018-07-25 08:37:32,310 INFO L415 AbstractCegarLoop]: === Iteration 75 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:32,310 INFO L82 PathProgramCache]: Analyzing trace with hash -386543244, now seen corresponding path program 74 times [2018-07-25 08:37:32,310 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:32,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:33,242 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 08:37:33,242 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:33,243 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-07-25 08:37:33,243 INFO L451 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-07-25 08:37:33,243 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-07-25 08:37:33,243 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=6006, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 08:37:33,243 INFO L87 Difference]: Start difference. First operand 152 states and 152 transitions. Second operand 79 states. [2018-07-25 08:37:34,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:34,571 INFO L93 Difference]: Finished difference Result 156 states and 156 transitions. [2018-07-25 08:37:34,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-07-25 08:37:34,571 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 151 [2018-07-25 08:37:34,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:34,572 INFO L225 Difference]: With dead ends: 156 [2018-07-25 08:37:34,572 INFO L226 Difference]: Without dead ends: 155 [2018-07-25 08:37:34,573 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=156, Invalid=6006, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 08:37:34,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-07-25 08:37:34,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 154. [2018-07-25 08:37:34,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-07-25 08:37:34,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 154 transitions. [2018-07-25 08:37:34,733 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 154 transitions. Word has length 151 [2018-07-25 08:37:34,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:34,733 INFO L472 AbstractCegarLoop]: Abstraction has 154 states and 154 transitions. [2018-07-25 08:37:34,733 INFO L473 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-07-25 08:37:34,733 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 154 transitions. [2018-07-25 08:37:34,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-07-25 08:37:34,734 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:34,734 INFO L354 BasicCegarLoop]: trace histogram [76, 75, 1, 1] [2018-07-25 08:37:34,734 INFO L415 AbstractCegarLoop]: === Iteration 76 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:34,734 INFO L82 PathProgramCache]: Analyzing trace with hash -2100868938, now seen corresponding path program 75 times [2018-07-25 08:37:34,734 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:34,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:35,668 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 08:37:35,668 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:35,668 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2018-07-25 08:37:35,669 INFO L451 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-25 08:37:35,669 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-25 08:37:35,669 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=6162, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:37:35,669 INFO L87 Difference]: Start difference. First operand 154 states and 154 transitions. Second operand 80 states. [2018-07-25 08:37:37,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:37,263 INFO L93 Difference]: Finished difference Result 158 states and 158 transitions. [2018-07-25 08:37:37,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-07-25 08:37:37,263 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 153 [2018-07-25 08:37:37,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:37,264 INFO L225 Difference]: With dead ends: 158 [2018-07-25 08:37:37,264 INFO L226 Difference]: Without dead ends: 157 [2018-07-25 08:37:37,264 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=158, Invalid=6162, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:37:37,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-07-25 08:37:37,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156. [2018-07-25 08:37:37,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-07-25 08:37:37,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 156 transitions. [2018-07-25 08:37:37,417 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 156 transitions. Word has length 153 [2018-07-25 08:37:37,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:37,417 INFO L472 AbstractCegarLoop]: Abstraction has 156 states and 156 transitions. [2018-07-25 08:37:37,417 INFO L473 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-25 08:37:37,417 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 156 transitions. [2018-07-25 08:37:37,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-07-25 08:37:37,418 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:37,418 INFO L354 BasicCegarLoop]: trace histogram [77, 76, 1, 1] [2018-07-25 08:37:37,418 INFO L415 AbstractCegarLoop]: === Iteration 77 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:37,418 INFO L82 PathProgramCache]: Analyzing trace with hash -300419208, now seen corresponding path program 76 times [2018-07-25 08:37:37,418 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:37,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:38,366 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 08:37:38,366 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:38,366 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-25 08:37:38,366 INFO L451 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-07-25 08:37:38,367 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-07-25 08:37:38,367 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=6320, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 08:37:38,367 INFO L87 Difference]: Start difference. First operand 156 states and 156 transitions. Second operand 81 states. [2018-07-25 08:37:39,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:39,928 INFO L93 Difference]: Finished difference Result 160 states and 160 transitions. [2018-07-25 08:37:39,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-07-25 08:37:39,929 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 155 [2018-07-25 08:37:39,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:39,929 INFO L225 Difference]: With dead ends: 160 [2018-07-25 08:37:39,930 INFO L226 Difference]: Without dead ends: 159 [2018-07-25 08:37:39,930 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=160, Invalid=6320, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 08:37:39,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-07-25 08:37:40,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 158. [2018-07-25 08:37:40,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-07-25 08:37:40,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 158 transitions. [2018-07-25 08:37:40,189 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 158 transitions. Word has length 155 [2018-07-25 08:37:40,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:40,189 INFO L472 AbstractCegarLoop]: Abstraction has 158 states and 158 transitions. [2018-07-25 08:37:40,189 INFO L473 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-07-25 08:37:40,189 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 158 transitions. [2018-07-25 08:37:40,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-07-25 08:37:40,191 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:40,191 INFO L354 BasicCegarLoop]: trace histogram [78, 77, 1, 1] [2018-07-25 08:37:40,191 INFO L415 AbstractCegarLoop]: === Iteration 78 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:40,191 INFO L82 PathProgramCache]: Analyzing trace with hash -940048966, now seen corresponding path program 77 times [2018-07-25 08:37:40,192 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:40,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:41,266 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 08:37:41,266 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:41,266 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-07-25 08:37:41,267 INFO L451 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-07-25 08:37:41,267 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-07-25 08:37:41,267 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=6480, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 08:37:41,267 INFO L87 Difference]: Start difference. First operand 158 states and 158 transitions. Second operand 82 states. [2018-07-25 08:37:42,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:42,967 INFO L93 Difference]: Finished difference Result 162 states and 162 transitions. [2018-07-25 08:37:42,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-07-25 08:37:42,967 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 157 [2018-07-25 08:37:42,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:42,968 INFO L225 Difference]: With dead ends: 162 [2018-07-25 08:37:42,968 INFO L226 Difference]: Without dead ends: 161 [2018-07-25 08:37:42,968 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=162, Invalid=6480, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 08:37:42,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-07-25 08:37:43,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 160. [2018-07-25 08:37:43,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2018-07-25 08:37:43,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 160 transitions. [2018-07-25 08:37:43,171 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 160 transitions. Word has length 157 [2018-07-25 08:37:43,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:43,171 INFO L472 AbstractCegarLoop]: Abstraction has 160 states and 160 transitions. [2018-07-25 08:37:43,171 INFO L473 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-07-25 08:37:43,171 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 160 transitions. [2018-07-25 08:37:43,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-07-25 08:37:43,172 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:43,172 INFO L354 BasicCegarLoop]: trace histogram [79, 78, 1, 1] [2018-07-25 08:37:43,172 INFO L415 AbstractCegarLoop]: === Iteration 79 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:43,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1443923076, now seen corresponding path program 78 times [2018-07-25 08:37:43,172 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:43,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:44,126 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 08:37:44,126 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:44,126 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-07-25 08:37:44,127 INFO L451 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-07-25 08:37:44,127 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-07-25 08:37:44,127 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=6642, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 08:37:44,128 INFO L87 Difference]: Start difference. First operand 160 states and 160 transitions. Second operand 83 states. [2018-07-25 08:37:45,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:45,742 INFO L93 Difference]: Finished difference Result 164 states and 164 transitions. [2018-07-25 08:37:45,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-07-25 08:37:45,742 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 159 [2018-07-25 08:37:45,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:45,743 INFO L225 Difference]: With dead ends: 164 [2018-07-25 08:37:45,743 INFO L226 Difference]: Without dead ends: 163 [2018-07-25 08:37:45,744 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=164, Invalid=6642, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 08:37:45,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-07-25 08:37:45,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 162. [2018-07-25 08:37:45,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2018-07-25 08:37:45,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 162 transitions. [2018-07-25 08:37:45,917 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 162 transitions. Word has length 159 [2018-07-25 08:37:45,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:45,917 INFO L472 AbstractCegarLoop]: Abstraction has 162 states and 162 transitions. [2018-07-25 08:37:45,917 INFO L473 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-07-25 08:37:45,917 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 162 transitions. [2018-07-25 08:37:45,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-07-25 08:37:45,918 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:45,918 INFO L354 BasicCegarLoop]: trace histogram [80, 79, 1, 1] [2018-07-25 08:37:45,918 INFO L415 AbstractCegarLoop]: === Iteration 80 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:45,918 INFO L82 PathProgramCache]: Analyzing trace with hash -335638338, now seen corresponding path program 79 times [2018-07-25 08:37:45,919 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:45,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:46,810 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 08:37:46,810 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:46,810 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2018-07-25 08:37:46,811 INFO L451 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-07-25 08:37:46,811 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-07-25 08:37:46,811 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=6806, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 08:37:46,811 INFO L87 Difference]: Start difference. First operand 162 states and 162 transitions. Second operand 84 states. [2018-07-25 08:37:48,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:48,361 INFO L93 Difference]: Finished difference Result 166 states and 166 transitions. [2018-07-25 08:37:48,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-07-25 08:37:48,361 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 161 [2018-07-25 08:37:48,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:48,362 INFO L225 Difference]: With dead ends: 166 [2018-07-25 08:37:48,362 INFO L226 Difference]: Without dead ends: 165 [2018-07-25 08:37:48,363 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=166, Invalid=6806, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 08:37:48,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-07-25 08:37:48,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 164. [2018-07-25 08:37:48,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-07-25 08:37:48,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 164 transitions. [2018-07-25 08:37:48,528 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 164 transitions. Word has length 161 [2018-07-25 08:37:48,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:48,528 INFO L472 AbstractCegarLoop]: Abstraction has 164 states and 164 transitions. [2018-07-25 08:37:48,528 INFO L473 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-07-25 08:37:48,529 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 164 transitions. [2018-07-25 08:37:48,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-07-25 08:37:48,529 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:48,529 INFO L354 BasicCegarLoop]: trace histogram [81, 80, 1, 1] [2018-07-25 08:37:48,529 INFO L415 AbstractCegarLoop]: === Iteration 81 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:48,530 INFO L82 PathProgramCache]: Analyzing trace with hash -425894528, now seen corresponding path program 80 times [2018-07-25 08:37:48,530 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:48,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:49,588 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 08:37:49,588 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:49,589 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-07-25 08:37:49,589 INFO L451 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-07-25 08:37:49,589 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-07-25 08:37:49,589 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=6972, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 08:37:49,590 INFO L87 Difference]: Start difference. First operand 164 states and 164 transitions. Second operand 85 states. [2018-07-25 08:37:51,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:51,352 INFO L93 Difference]: Finished difference Result 168 states and 168 transitions. [2018-07-25 08:37:51,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-07-25 08:37:51,352 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 163 [2018-07-25 08:37:51,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:51,353 INFO L225 Difference]: With dead ends: 168 [2018-07-25 08:37:51,353 INFO L226 Difference]: Without dead ends: 167 [2018-07-25 08:37:51,353 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=168, Invalid=6972, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 08:37:51,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-07-25 08:37:51,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 166. [2018-07-25 08:37:51,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2018-07-25 08:37:51,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 166 transitions. [2018-07-25 08:37:51,523 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 166 transitions. Word has length 163 [2018-07-25 08:37:51,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:51,523 INFO L472 AbstractCegarLoop]: Abstraction has 166 states and 166 transitions. [2018-07-25 08:37:51,523 INFO L473 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-07-25 08:37:51,523 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 166 transitions. [2018-07-25 08:37:51,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-07-25 08:37:51,524 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:51,524 INFO L354 BasicCegarLoop]: trace histogram [82, 81, 1, 1] [2018-07-25 08:37:51,525 INFO L415 AbstractCegarLoop]: === Iteration 82 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:51,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1262747198, now seen corresponding path program 81 times [2018-07-25 08:37:51,525 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:51,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:52,562 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 08:37:52,562 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:52,563 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2018-07-25 08:37:52,563 INFO L451 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-07-25 08:37:52,563 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-07-25 08:37:52,564 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=7140, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:37:52,564 INFO L87 Difference]: Start difference. First operand 166 states and 166 transitions. Second operand 86 states. [2018-07-25 08:37:54,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:54,270 INFO L93 Difference]: Finished difference Result 170 states and 170 transitions. [2018-07-25 08:37:54,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-07-25 08:37:54,270 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 165 [2018-07-25 08:37:54,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:54,272 INFO L225 Difference]: With dead ends: 170 [2018-07-25 08:37:54,272 INFO L226 Difference]: Without dead ends: 169 [2018-07-25 08:37:54,272 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=170, Invalid=7140, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:37:54,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-07-25 08:37:54,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 168. [2018-07-25 08:37:54,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2018-07-25 08:37:54,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 168 transitions. [2018-07-25 08:37:54,485 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 168 transitions. Word has length 165 [2018-07-25 08:37:54,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:54,485 INFO L472 AbstractCegarLoop]: Abstraction has 168 states and 168 transitions. [2018-07-25 08:37:54,485 INFO L473 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-07-25 08:37:54,485 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 168 transitions. [2018-07-25 08:37:54,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-07-25 08:37:54,486 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:54,486 INFO L354 BasicCegarLoop]: trace histogram [83, 82, 1, 1] [2018-07-25 08:37:54,486 INFO L415 AbstractCegarLoop]: === Iteration 83 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:54,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1975688580, now seen corresponding path program 82 times [2018-07-25 08:37:54,486 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:54,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:55,541 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 08:37:55,541 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:55,541 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-07-25 08:37:55,542 INFO L451 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-07-25 08:37:55,542 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-07-25 08:37:55,542 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=7310, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 08:37:55,543 INFO L87 Difference]: Start difference. First operand 168 states and 168 transitions. Second operand 87 states. [2018-07-25 08:37:57,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:57,205 INFO L93 Difference]: Finished difference Result 172 states and 172 transitions. [2018-07-25 08:37:57,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-07-25 08:37:57,205 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 167 [2018-07-25 08:37:57,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:57,206 INFO L225 Difference]: With dead ends: 172 [2018-07-25 08:37:57,206 INFO L226 Difference]: Without dead ends: 171 [2018-07-25 08:37:57,207 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=172, Invalid=7310, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 08:37:57,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-07-25 08:37:57,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 170. [2018-07-25 08:37:57,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2018-07-25 08:37:57,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 170 transitions. [2018-07-25 08:37:57,396 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 170 transitions. Word has length 167 [2018-07-25 08:37:57,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:57,396 INFO L472 AbstractCegarLoop]: Abstraction has 170 states and 170 transitions. [2018-07-25 08:37:57,396 INFO L473 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-07-25 08:37:57,396 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 170 transitions. [2018-07-25 08:37:57,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-07-25 08:37:57,397 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:57,397 INFO L354 BasicCegarLoop]: trace histogram [84, 83, 1, 1] [2018-07-25 08:37:57,397 INFO L415 AbstractCegarLoop]: === Iteration 84 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:57,398 INFO L82 PathProgramCache]: Analyzing trace with hash 261181638, now seen corresponding path program 83 times [2018-07-25 08:37:57,398 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:57,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:58,479 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 08:37:58,480 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:58,480 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2018-07-25 08:37:58,480 INFO L451 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-07-25 08:37:58,480 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-07-25 08:37:58,481 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=7482, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:37:58,481 INFO L87 Difference]: Start difference. First operand 170 states and 170 transitions. Second operand 88 states. [2018-07-25 08:38:00,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:00,221 INFO L93 Difference]: Finished difference Result 174 states and 174 transitions. [2018-07-25 08:38:00,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-07-25 08:38:00,221 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 169 [2018-07-25 08:38:00,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:00,222 INFO L225 Difference]: With dead ends: 174 [2018-07-25 08:38:00,222 INFO L226 Difference]: Without dead ends: 173 [2018-07-25 08:38:00,223 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=174, Invalid=7482, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:38:00,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-07-25 08:38:00,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 172. [2018-07-25 08:38:00,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2018-07-25 08:38:00,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 172 transitions. [2018-07-25 08:38:00,429 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 172 transitions. Word has length 169 [2018-07-25 08:38:00,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:00,429 INFO L472 AbstractCegarLoop]: Abstraction has 172 states and 172 transitions. [2018-07-25 08:38:00,429 INFO L473 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-07-25 08:38:00,429 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 172 transitions. [2018-07-25 08:38:00,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-07-25 08:38:00,430 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:00,430 INFO L354 BasicCegarLoop]: trace histogram [85, 84, 1, 1] [2018-07-25 08:38:00,430 INFO L415 AbstractCegarLoop]: === Iteration 85 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:00,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1887452040, now seen corresponding path program 84 times [2018-07-25 08:38:00,431 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:00,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:01,553 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 08:38:01,553 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:01,554 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-07-25 08:38:01,554 INFO L451 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-07-25 08:38:01,554 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-07-25 08:38:01,555 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=7656, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 08:38:01,555 INFO L87 Difference]: Start difference. First operand 172 states and 172 transitions. Second operand 89 states. [2018-07-25 08:38:03,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:03,423 INFO L93 Difference]: Finished difference Result 176 states and 176 transitions. [2018-07-25 08:38:03,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-07-25 08:38:03,423 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 171 [2018-07-25 08:38:03,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:03,424 INFO L225 Difference]: With dead ends: 176 [2018-07-25 08:38:03,424 INFO L226 Difference]: Without dead ends: 175 [2018-07-25 08:38:03,425 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=176, Invalid=7656, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 08:38:03,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-07-25 08:38:03,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 174. [2018-07-25 08:38:03,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-07-25 08:38:03,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 174 transitions. [2018-07-25 08:38:03,626 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 174 transitions. Word has length 171 [2018-07-25 08:38:03,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:03,626 INFO L472 AbstractCegarLoop]: Abstraction has 174 states and 174 transitions. [2018-07-25 08:38:03,627 INFO L473 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-07-25 08:38:03,627 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 174 transitions. [2018-07-25 08:38:03,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-07-25 08:38:03,628 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:03,628 INFO L354 BasicCegarLoop]: trace histogram [86, 85, 1, 1] [2018-07-25 08:38:03,628 INFO L415 AbstractCegarLoop]: === Iteration 86 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:03,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1365212618, now seen corresponding path program 85 times [2018-07-25 08:38:03,628 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:03,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:04,919 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 08:38:04,919 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:04,920 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-07-25 08:38:04,920 INFO L451 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-07-25 08:38:04,920 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-07-25 08:38:04,921 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=7832, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 08:38:04,921 INFO L87 Difference]: Start difference. First operand 174 states and 174 transitions. Second operand 90 states. [2018-07-25 08:38:06,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:06,926 INFO L93 Difference]: Finished difference Result 178 states and 178 transitions. [2018-07-25 08:38:06,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-07-25 08:38:06,926 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 173 [2018-07-25 08:38:06,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:06,927 INFO L225 Difference]: With dead ends: 178 [2018-07-25 08:38:06,927 INFO L226 Difference]: Without dead ends: 177 [2018-07-25 08:38:06,928 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=178, Invalid=7832, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 08:38:06,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-07-25 08:38:07,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 176. [2018-07-25 08:38:07,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-07-25 08:38:07,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 176 transitions. [2018-07-25 08:38:07,132 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 176 transitions. Word has length 173 [2018-07-25 08:38:07,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:07,132 INFO L472 AbstractCegarLoop]: Abstraction has 176 states and 176 transitions. [2018-07-25 08:38:07,132 INFO L473 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-07-25 08:38:07,132 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 176 transitions. [2018-07-25 08:38:07,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-07-25 08:38:07,133 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:07,133 INFO L354 BasicCegarLoop]: trace histogram [87, 86, 1, 1] [2018-07-25 08:38:07,134 INFO L415 AbstractCegarLoop]: === Iteration 87 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:07,134 INFO L82 PathProgramCache]: Analyzing trace with hash 2004301708, now seen corresponding path program 86 times [2018-07-25 08:38:07,134 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:07,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:08,382 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 08:38:08,383 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:08,383 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-07-25 08:38:08,383 INFO L451 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-07-25 08:38:08,383 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-07-25 08:38:08,384 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=8010, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 08:38:08,384 INFO L87 Difference]: Start difference. First operand 176 states and 176 transitions. Second operand 91 states. [2018-07-25 08:38:10,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:10,361 INFO L93 Difference]: Finished difference Result 180 states and 180 transitions. [2018-07-25 08:38:10,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-07-25 08:38:10,362 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 175 [2018-07-25 08:38:10,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:10,363 INFO L225 Difference]: With dead ends: 180 [2018-07-25 08:38:10,363 INFO L226 Difference]: Without dead ends: 179 [2018-07-25 08:38:10,363 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=180, Invalid=8010, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 08:38:10,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-07-25 08:38:10,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 178. [2018-07-25 08:38:10,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-07-25 08:38:10,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 178 transitions. [2018-07-25 08:38:10,574 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 178 transitions. Word has length 175 [2018-07-25 08:38:10,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:10,574 INFO L472 AbstractCegarLoop]: Abstraction has 178 states and 178 transitions. [2018-07-25 08:38:10,574 INFO L473 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-07-25 08:38:10,574 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 178 transitions. [2018-07-25 08:38:10,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-07-25 08:38:10,575 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:10,575 INFO L354 BasicCegarLoop]: trace histogram [88, 87, 1, 1] [2018-07-25 08:38:10,575 INFO L415 AbstractCegarLoop]: === Iteration 88 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:10,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1988593870, now seen corresponding path program 87 times [2018-07-25 08:38:10,576 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:10,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:11,901 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 08:38:11,901 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:11,901 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2018-07-25 08:38:11,902 INFO L451 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-07-25 08:38:11,902 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-07-25 08:38:11,902 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=8190, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:38:11,903 INFO L87 Difference]: Start difference. First operand 178 states and 178 transitions. Second operand 92 states. [2018-07-25 08:38:14,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:14,042 INFO L93 Difference]: Finished difference Result 182 states and 182 transitions. [2018-07-25 08:38:14,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-07-25 08:38:14,042 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 177 [2018-07-25 08:38:14,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:14,043 INFO L225 Difference]: With dead ends: 182 [2018-07-25 08:38:14,043 INFO L226 Difference]: Without dead ends: 181 [2018-07-25 08:38:14,044 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=182, Invalid=8190, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:38:14,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-07-25 08:38:14,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 180. [2018-07-25 08:38:14,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2018-07-25 08:38:14,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 180 transitions. [2018-07-25 08:38:14,285 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 180 transitions. Word has length 177 [2018-07-25 08:38:14,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:14,286 INFO L472 AbstractCegarLoop]: Abstraction has 180 states and 180 transitions. [2018-07-25 08:38:14,286 INFO L473 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-07-25 08:38:14,286 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 180 transitions. [2018-07-25 08:38:14,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-07-25 08:38:14,286 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:14,287 INFO L354 BasicCegarLoop]: trace histogram [89, 88, 1, 1] [2018-07-25 08:38:14,287 INFO L415 AbstractCegarLoop]: === Iteration 89 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:14,287 INFO L82 PathProgramCache]: Analyzing trace with hash -221736560, now seen corresponding path program 88 times [2018-07-25 08:38:14,287 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:14,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:15,509 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 08:38:15,509 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:15,510 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-07-25 08:38:15,510 INFO L451 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-07-25 08:38:15,510 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-07-25 08:38:15,510 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=8372, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 08:38:15,511 INFO L87 Difference]: Start difference. First operand 180 states and 180 transitions. Second operand 93 states. [2018-07-25 08:38:17,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:17,587 INFO L93 Difference]: Finished difference Result 184 states and 184 transitions. [2018-07-25 08:38:17,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-07-25 08:38:17,587 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 179 [2018-07-25 08:38:17,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:17,588 INFO L225 Difference]: With dead ends: 184 [2018-07-25 08:38:17,588 INFO L226 Difference]: Without dead ends: 183 [2018-07-25 08:38:17,589 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=184, Invalid=8372, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 08:38:17,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-07-25 08:38:17,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 182. [2018-07-25 08:38:17,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-07-25 08:38:17,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 182 transitions. [2018-07-25 08:38:17,810 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 182 transitions. Word has length 179 [2018-07-25 08:38:17,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:17,810 INFO L472 AbstractCegarLoop]: Abstraction has 182 states and 182 transitions. [2018-07-25 08:38:17,810 INFO L473 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-07-25 08:38:17,810 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 182 transitions. [2018-07-25 08:38:17,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-07-25 08:38:17,811 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:17,811 INFO L354 BasicCegarLoop]: trace histogram [90, 89, 1, 1] [2018-07-25 08:38:17,812 INFO L415 AbstractCegarLoop]: === Iteration 90 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:17,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1659531730, now seen corresponding path program 89 times [2018-07-25 08:38:17,812 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:17,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:18,974 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 08:38:18,974 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:18,975 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2018-07-25 08:38:18,975 INFO L451 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-07-25 08:38:18,975 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-07-25 08:38:18,975 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=8556, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 08:38:18,975 INFO L87 Difference]: Start difference. First operand 182 states and 182 transitions. Second operand 94 states. [2018-07-25 08:38:21,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:21,036 INFO L93 Difference]: Finished difference Result 186 states and 186 transitions. [2018-07-25 08:38:21,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-07-25 08:38:21,037 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 181 [2018-07-25 08:38:21,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:21,038 INFO L225 Difference]: With dead ends: 186 [2018-07-25 08:38:21,038 INFO L226 Difference]: Without dead ends: 185 [2018-07-25 08:38:21,038 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=186, Invalid=8556, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 08:38:21,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-07-25 08:38:21,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 184. [2018-07-25 08:38:21,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-07-25 08:38:21,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 184 transitions. [2018-07-25 08:38:21,265 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 184 transitions. Word has length 181 [2018-07-25 08:38:21,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:21,265 INFO L472 AbstractCegarLoop]: Abstraction has 184 states and 184 transitions. [2018-07-25 08:38:21,266 INFO L473 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-07-25 08:38:21,266 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 184 transitions. [2018-07-25 08:38:21,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-07-25 08:38:21,266 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:21,266 INFO L354 BasicCegarLoop]: trace histogram [91, 90, 1, 1] [2018-07-25 08:38:21,267 INFO L415 AbstractCegarLoop]: === Iteration 91 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:21,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1377126804, now seen corresponding path program 90 times [2018-07-25 08:38:21,267 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:21,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:22,538 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 08:38:22,538 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:22,539 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-07-25 08:38:22,539 INFO L451 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-07-25 08:38:22,539 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-07-25 08:38:22,540 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=8742, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 08:38:22,540 INFO L87 Difference]: Start difference. First operand 184 states and 184 transitions. Second operand 95 states. [2018-07-25 08:38:24,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:24,741 INFO L93 Difference]: Finished difference Result 188 states and 188 transitions. [2018-07-25 08:38:24,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-07-25 08:38:24,741 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 183 [2018-07-25 08:38:24,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:24,742 INFO L225 Difference]: With dead ends: 188 [2018-07-25 08:38:24,742 INFO L226 Difference]: Without dead ends: 187 [2018-07-25 08:38:24,743 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=188, Invalid=8742, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 08:38:24,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-07-25 08:38:24,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 186. [2018-07-25 08:38:24,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2018-07-25 08:38:24,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 186 transitions. [2018-07-25 08:38:24,971 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 186 transitions. Word has length 183 [2018-07-25 08:38:24,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:24,971 INFO L472 AbstractCegarLoop]: Abstraction has 186 states and 186 transitions. [2018-07-25 08:38:24,972 INFO L473 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-07-25 08:38:24,972 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 186 transitions. [2018-07-25 08:38:24,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-07-25 08:38:24,972 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:24,972 INFO L354 BasicCegarLoop]: trace histogram [92, 91, 1, 1] [2018-07-25 08:38:24,973 INFO L415 AbstractCegarLoop]: === Iteration 92 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:24,973 INFO L82 PathProgramCache]: Analyzing trace with hash 568932566, now seen corresponding path program 91 times [2018-07-25 08:38:24,973 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:25,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:26,251 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 08:38:26,252 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:26,252 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2018-07-25 08:38:26,252 INFO L451 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-07-25 08:38:26,252 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-07-25 08:38:26,253 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=8930, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 08:38:26,253 INFO L87 Difference]: Start difference. First operand 186 states and 186 transitions. Second operand 96 states. [2018-07-25 08:38:28,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:28,508 INFO L93 Difference]: Finished difference Result 190 states and 190 transitions. [2018-07-25 08:38:28,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-07-25 08:38:28,508 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 185 [2018-07-25 08:38:28,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:28,509 INFO L225 Difference]: With dead ends: 190 [2018-07-25 08:38:28,509 INFO L226 Difference]: Without dead ends: 189 [2018-07-25 08:38:28,510 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=190, Invalid=8930, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 08:38:28,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-07-25 08:38:28,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 188. [2018-07-25 08:38:28,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2018-07-25 08:38:28,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 188 transitions. [2018-07-25 08:38:28,741 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 188 transitions. Word has length 185 [2018-07-25 08:38:28,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:28,741 INFO L472 AbstractCegarLoop]: Abstraction has 188 states and 188 transitions. [2018-07-25 08:38:28,741 INFO L473 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-07-25 08:38:28,741 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 188 transitions. [2018-07-25 08:38:28,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-07-25 08:38:28,742 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:28,742 INFO L354 BasicCegarLoop]: trace histogram [93, 92, 1, 1] [2018-07-25 08:38:28,742 INFO L415 AbstractCegarLoop]: === Iteration 93 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:28,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1283350424, now seen corresponding path program 92 times [2018-07-25 08:38:28,743 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:28,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:30,121 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 08:38:30,122 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:30,122 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-07-25 08:38:30,122 INFO L451 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-07-25 08:38:30,122 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-07-25 08:38:30,123 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=9120, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 08:38:30,123 INFO L87 Difference]: Start difference. First operand 188 states and 188 transitions. Second operand 97 states. [2018-07-25 08:38:32,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:32,445 INFO L93 Difference]: Finished difference Result 192 states and 192 transitions. [2018-07-25 08:38:32,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-07-25 08:38:32,446 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 187 [2018-07-25 08:38:32,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:32,447 INFO L225 Difference]: With dead ends: 192 [2018-07-25 08:38:32,447 INFO L226 Difference]: Without dead ends: 191 [2018-07-25 08:38:32,447 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=192, Invalid=9120, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 08:38:32,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-07-25 08:38:32,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 190. [2018-07-25 08:38:32,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-07-25 08:38:32,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 190 transitions. [2018-07-25 08:38:32,688 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 190 transitions. Word has length 187 [2018-07-25 08:38:32,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:32,688 INFO L472 AbstractCegarLoop]: Abstraction has 190 states and 190 transitions. [2018-07-25 08:38:32,689 INFO L473 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-07-25 08:38:32,689 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 190 transitions. [2018-07-25 08:38:32,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-07-25 08:38:32,689 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:32,689 INFO L354 BasicCegarLoop]: trace histogram [94, 93, 1, 1] [2018-07-25 08:38:32,690 INFO L415 AbstractCegarLoop]: === Iteration 94 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:32,690 INFO L82 PathProgramCache]: Analyzing trace with hash 644144602, now seen corresponding path program 93 times [2018-07-25 08:38:32,690 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:32,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:34,039 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 08:38:34,039 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:34,039 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96] total 96 [2018-07-25 08:38:34,040 INFO L451 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-07-25 08:38:34,040 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-07-25 08:38:34,040 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=9312, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:38:34,041 INFO L87 Difference]: Start difference. First operand 190 states and 190 transitions. Second operand 98 states. [2018-07-25 08:38:36,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:36,316 INFO L93 Difference]: Finished difference Result 194 states and 194 transitions. [2018-07-25 08:38:36,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-07-25 08:38:36,316 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 189 [2018-07-25 08:38:36,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:36,317 INFO L225 Difference]: With dead ends: 194 [2018-07-25 08:38:36,317 INFO L226 Difference]: Without dead ends: 193 [2018-07-25 08:38:36,318 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=194, Invalid=9312, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:38:36,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-07-25 08:38:36,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 192. [2018-07-25 08:38:36,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-07-25 08:38:36,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 192 transitions. [2018-07-25 08:38:36,588 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 192 transitions. Word has length 189 [2018-07-25 08:38:36,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:36,588 INFO L472 AbstractCegarLoop]: Abstraction has 192 states and 192 transitions. [2018-07-25 08:38:36,588 INFO L473 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-07-25 08:38:36,588 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 192 transitions. [2018-07-25 08:38:36,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-07-25 08:38:36,589 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:36,589 INFO L354 BasicCegarLoop]: trace histogram [95, 94, 1, 1] [2018-07-25 08:38:36,589 INFO L415 AbstractCegarLoop]: === Iteration 95 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:36,590 INFO L82 PathProgramCache]: Analyzing trace with hash 547672988, now seen corresponding path program 94 times [2018-07-25 08:38:36,590 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:36,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:38,127 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 08:38:38,127 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:38,127 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-07-25 08:38:38,128 INFO L451 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-07-25 08:38:38,128 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-07-25 08:38:38,128 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=9506, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 08:38:38,129 INFO L87 Difference]: Start difference. First operand 192 states and 192 transitions. Second operand 99 states. [2018-07-25 08:38:40,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:40,564 INFO L93 Difference]: Finished difference Result 196 states and 196 transitions. [2018-07-25 08:38:40,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-07-25 08:38:40,564 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 191 [2018-07-25 08:38:40,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:40,565 INFO L225 Difference]: With dead ends: 196 [2018-07-25 08:38:40,565 INFO L226 Difference]: Without dead ends: 195 [2018-07-25 08:38:40,566 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=196, Invalid=9506, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 08:38:40,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-07-25 08:38:40,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 194. [2018-07-25 08:38:40,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-07-25 08:38:40,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 194 transitions. [2018-07-25 08:38:40,816 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 194 transitions. Word has length 191 [2018-07-25 08:38:40,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:40,816 INFO L472 AbstractCegarLoop]: Abstraction has 194 states and 194 transitions. [2018-07-25 08:38:40,816 INFO L473 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-07-25 08:38:40,816 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 194 transitions. [2018-07-25 08:38:40,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-07-25 08:38:40,817 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:40,817 INFO L354 BasicCegarLoop]: trace histogram [96, 95, 1, 1] [2018-07-25 08:38:40,818 INFO L415 AbstractCegarLoop]: === Iteration 96 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:40,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1967234850, now seen corresponding path program 95 times [2018-07-25 08:38:40,818 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:40,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:42,272 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 08:38:42,273 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:42,273 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98] total 98 [2018-07-25 08:38:42,273 INFO L451 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-07-25 08:38:42,273 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-07-25 08:38:42,274 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=9702, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 08:38:42,274 INFO L87 Difference]: Start difference. First operand 194 states and 194 transitions. Second operand 100 states. [2018-07-25 08:38:44,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:44,486 INFO L93 Difference]: Finished difference Result 198 states and 198 transitions. [2018-07-25 08:38:44,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-07-25 08:38:44,487 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 193 [2018-07-25 08:38:44,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:44,488 INFO L225 Difference]: With dead ends: 198 [2018-07-25 08:38:44,488 INFO L226 Difference]: Without dead ends: 197 [2018-07-25 08:38:44,488 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=198, Invalid=9702, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 08:38:44,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-07-25 08:38:44,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 196. [2018-07-25 08:38:44,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2018-07-25 08:38:44,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 196 transitions. [2018-07-25 08:38:44,720 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 196 transitions. Word has length 193 [2018-07-25 08:38:44,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:44,721 INFO L472 AbstractCegarLoop]: Abstraction has 196 states and 196 transitions. [2018-07-25 08:38:44,721 INFO L473 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-07-25 08:38:44,721 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 196 transitions. [2018-07-25 08:38:44,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-07-25 08:38:44,722 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:44,722 INFO L354 BasicCegarLoop]: trace histogram [97, 96, 1, 1] [2018-07-25 08:38:44,722 INFO L415 AbstractCegarLoop]: === Iteration 97 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:44,722 INFO L82 PathProgramCache]: Analyzing trace with hash -727079520, now seen corresponding path program 96 times [2018-07-25 08:38:44,722 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:44,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:46,052 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 08:38:46,052 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:46,053 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-07-25 08:38:46,053 INFO L451 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-07-25 08:38:46,053 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-07-25 08:38:46,053 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=9900, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 08:38:46,054 INFO L87 Difference]: Start difference. First operand 196 states and 196 transitions. Second operand 101 states. [2018-07-25 08:38:48,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:48,348 INFO L93 Difference]: Finished difference Result 200 states and 200 transitions. [2018-07-25 08:38:48,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-07-25 08:38:48,349 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 195 [2018-07-25 08:38:48,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:48,349 INFO L225 Difference]: With dead ends: 200 [2018-07-25 08:38:48,350 INFO L226 Difference]: Without dead ends: 199 [2018-07-25 08:38:48,350 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=200, Invalid=9900, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 08:38:48,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-07-25 08:38:48,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 198. [2018-07-25 08:38:48,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-07-25 08:38:48,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 198 transitions. [2018-07-25 08:38:48,602 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 198 transitions. Word has length 195 [2018-07-25 08:38:48,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:48,603 INFO L472 AbstractCegarLoop]: Abstraction has 198 states and 198 transitions. [2018-07-25 08:38:48,603 INFO L473 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-07-25 08:38:48,603 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 198 transitions. [2018-07-25 08:38:48,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-07-25 08:38:48,603 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:48,604 INFO L354 BasicCegarLoop]: trace histogram [98, 97, 1, 1] [2018-07-25 08:38:48,604 INFO L415 AbstractCegarLoop]: === Iteration 98 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:48,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1356251618, now seen corresponding path program 97 times [2018-07-25 08:38:48,604 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:48,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:50,028 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 08:38:50,028 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:50,028 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100] total 100 [2018-07-25 08:38:50,028 INFO L451 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-07-25 08:38:50,029 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-07-25 08:38:50,029 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=10100, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 08:38:50,029 INFO L87 Difference]: Start difference. First operand 198 states and 198 transitions. Second operand 102 states. [2018-07-25 08:38:52,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:52,361 INFO L93 Difference]: Finished difference Result 202 states and 202 transitions. [2018-07-25 08:38:52,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-07-25 08:38:52,362 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 197 [2018-07-25 08:38:52,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:52,362 INFO L225 Difference]: With dead ends: 202 [2018-07-25 08:38:52,362 INFO L226 Difference]: Without dead ends: 201 [2018-07-25 08:38:52,363 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=202, Invalid=10100, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 08:38:52,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-07-25 08:38:52,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 200. [2018-07-25 08:38:52,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2018-07-25 08:38:52,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 200 transitions. [2018-07-25 08:38:52,606 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 200 transitions. Word has length 197 [2018-07-25 08:38:52,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:52,606 INFO L472 AbstractCegarLoop]: Abstraction has 200 states and 200 transitions. [2018-07-25 08:38:52,606 INFO L473 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-07-25 08:38:52,606 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 200 transitions. [2018-07-25 08:38:52,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-07-25 08:38:52,607 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:52,607 INFO L354 BasicCegarLoop]: trace histogram [99, 98, 1, 1] [2018-07-25 08:38:52,607 INFO L415 AbstractCegarLoop]: === Iteration 99 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:52,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1982715300, now seen corresponding path program 98 times [2018-07-25 08:38:52,608 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:52,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:54,352 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 08:38:54,352 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:54,352 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-07-25 08:38:54,353 INFO L451 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-07-25 08:38:54,353 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-07-25 08:38:54,354 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=10302, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 08:38:54,354 INFO L87 Difference]: Start difference. First operand 200 states and 200 transitions. Second operand 103 states. [2018-07-25 08:38:57,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:57,061 INFO L93 Difference]: Finished difference Result 204 states and 204 transitions. [2018-07-25 08:38:57,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-07-25 08:38:57,061 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 199 [2018-07-25 08:38:57,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:57,062 INFO L225 Difference]: With dead ends: 204 [2018-07-25 08:38:57,062 INFO L226 Difference]: Without dead ends: 203 [2018-07-25 08:38:57,063 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=204, Invalid=10302, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 08:38:57,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-07-25 08:38:57,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 202. [2018-07-25 08:38:57,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2018-07-25 08:38:57,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 202 transitions. [2018-07-25 08:38:57,345 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 202 transitions. Word has length 199 [2018-07-25 08:38:57,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:57,346 INFO L472 AbstractCegarLoop]: Abstraction has 202 states and 202 transitions. [2018-07-25 08:38:57,346 INFO L473 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-07-25 08:38:57,346 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 202 transitions. [2018-07-25 08:38:57,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-07-25 08:38:57,346 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:57,346 INFO L354 BasicCegarLoop]: trace histogram [100, 99, 1, 1] [2018-07-25 08:38:57,347 INFO L415 AbstractCegarLoop]: === Iteration 100 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:57,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1576075034, now seen corresponding path program 99 times [2018-07-25 08:38:57,347 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:57,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:58,744 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 08:38:58,745 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:58,745 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102] total 102 [2018-07-25 08:38:58,745 INFO L451 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-07-25 08:38:58,745 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-07-25 08:38:58,746 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=10506, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:38:58,746 INFO L87 Difference]: Start difference. First operand 202 states and 202 transitions. Second operand 104 states. [2018-07-25 08:39:01,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:01,296 INFO L93 Difference]: Finished difference Result 206 states and 206 transitions. [2018-07-25 08:39:01,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-07-25 08:39:01,296 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 201 [2018-07-25 08:39:01,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:01,297 INFO L225 Difference]: With dead ends: 206 [2018-07-25 08:39:01,297 INFO L226 Difference]: Without dead ends: 205 [2018-07-25 08:39:01,298 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=206, Invalid=10506, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:39:01,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-07-25 08:39:01,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 204. [2018-07-25 08:39:01,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2018-07-25 08:39:01,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 204 transitions. [2018-07-25 08:39:01,598 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 204 transitions. Word has length 201 [2018-07-25 08:39:01,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:01,598 INFO L472 AbstractCegarLoop]: Abstraction has 204 states and 204 transitions. [2018-07-25 08:39:01,598 INFO L473 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-07-25 08:39:01,598 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 204 transitions. [2018-07-25 08:39:01,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-07-25 08:39:01,599 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:01,599 INFO L354 BasicCegarLoop]: trace histogram [101, 100, 1, 1] [2018-07-25 08:39:01,600 INFO L415 AbstractCegarLoop]: === Iteration 101 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:01,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1515348904, now seen corresponding path program 100 times [2018-07-25 08:39:01,600 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:01,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:03,154 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 08:39:03,154 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:03,154 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-07-25 08:39:03,155 INFO L451 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-07-25 08:39:03,155 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-07-25 08:39:03,155 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=10712, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 08:39:03,155 INFO L87 Difference]: Start difference. First operand 204 states and 204 transitions. Second operand 105 states. [2018-07-25 08:39:05,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:05,859 INFO L93 Difference]: Finished difference Result 208 states and 208 transitions. [2018-07-25 08:39:05,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-07-25 08:39:05,859 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 203 [2018-07-25 08:39:05,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:05,860 INFO L225 Difference]: With dead ends: 208 [2018-07-25 08:39:05,860 INFO L226 Difference]: Without dead ends: 207 [2018-07-25 08:39:05,861 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=208, Invalid=10712, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 08:39:05,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-07-25 08:39:06,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 206. [2018-07-25 08:39:06,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2018-07-25 08:39:06,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 206 transitions. [2018-07-25 08:39:06,150 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 206 transitions. Word has length 203 [2018-07-25 08:39:06,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:06,150 INFO L472 AbstractCegarLoop]: Abstraction has 206 states and 206 transitions. [2018-07-25 08:39:06,150 INFO L473 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-07-25 08:39:06,150 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 206 transitions. [2018-07-25 08:39:06,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-07-25 08:39:06,151 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:06,151 INFO L354 BasicCegarLoop]: trace histogram [102, 101, 1, 1] [2018-07-25 08:39:06,151 INFO L415 AbstractCegarLoop]: === Iteration 102 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:06,152 INFO L82 PathProgramCache]: Analyzing trace with hash 256384490, now seen corresponding path program 101 times [2018-07-25 08:39:06,152 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:06,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:07,869 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 08:39:07,869 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:07,870 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104] total 104 [2018-07-25 08:39:07,870 INFO L451 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-07-25 08:39:07,870 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-07-25 08:39:07,871 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=10920, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 08:39:07,871 INFO L87 Difference]: Start difference. First operand 206 states and 206 transitions. Second operand 106 states. [2018-07-25 08:39:10,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:10,717 INFO L93 Difference]: Finished difference Result 210 states and 210 transitions. [2018-07-25 08:39:10,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-07-25 08:39:10,717 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 205 [2018-07-25 08:39:10,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:10,718 INFO L225 Difference]: With dead ends: 210 [2018-07-25 08:39:10,718 INFO L226 Difference]: Without dead ends: 209 [2018-07-25 08:39:10,719 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=210, Invalid=10920, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 08:39:10,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-07-25 08:39:11,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 208. [2018-07-25 08:39:11,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2018-07-25 08:39:11,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 208 transitions. [2018-07-25 08:39:11,010 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 208 transitions. Word has length 205 [2018-07-25 08:39:11,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:11,011 INFO L472 AbstractCegarLoop]: Abstraction has 208 states and 208 transitions. [2018-07-25 08:39:11,011 INFO L473 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-07-25 08:39:11,011 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 208 transitions. [2018-07-25 08:39:11,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-07-25 08:39:11,011 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:11,011 INFO L354 BasicCegarLoop]: trace histogram [103, 102, 1, 1] [2018-07-25 08:39:11,012 INFO L415 AbstractCegarLoop]: === Iteration 103 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:11,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1572360108, now seen corresponding path program 102 times [2018-07-25 08:39:11,012 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:11,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:12,777 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 08:39:12,778 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:12,778 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2018-07-25 08:39:12,778 INFO L451 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-07-25 08:39:12,778 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-07-25 08:39:12,779 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=11130, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 08:39:12,779 INFO L87 Difference]: Start difference. First operand 208 states and 208 transitions. Second operand 107 states. [2018-07-25 08:39:15,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:15,693 INFO L93 Difference]: Finished difference Result 212 states and 212 transitions. [2018-07-25 08:39:15,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-07-25 08:39:15,693 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 207 [2018-07-25 08:39:15,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:15,694 INFO L225 Difference]: With dead ends: 212 [2018-07-25 08:39:15,694 INFO L226 Difference]: Without dead ends: 211 [2018-07-25 08:39:15,694 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=212, Invalid=11130, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 08:39:15,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-07-25 08:39:15,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 210. [2018-07-25 08:39:15,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2018-07-25 08:39:15,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 210 transitions. [2018-07-25 08:39:15,989 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 210 transitions. Word has length 207 [2018-07-25 08:39:15,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:15,989 INFO L472 AbstractCegarLoop]: Abstraction has 210 states and 210 transitions. [2018-07-25 08:39:15,990 INFO L473 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-07-25 08:39:15,990 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 210 transitions. [2018-07-25 08:39:15,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-07-25 08:39:15,990 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:15,990 INFO L354 BasicCegarLoop]: trace histogram [104, 103, 1, 1] [2018-07-25 08:39:15,991 INFO L415 AbstractCegarLoop]: === Iteration 104 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:15,991 INFO L82 PathProgramCache]: Analyzing trace with hash -790423314, now seen corresponding path program 103 times [2018-07-25 08:39:15,991 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:16,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:17,670 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 08:39:17,670 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:17,671 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106] total 106 [2018-07-25 08:39:17,671 INFO L451 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-07-25 08:39:17,671 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-07-25 08:39:17,672 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=11342, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 08:39:17,672 INFO L87 Difference]: Start difference. First operand 210 states and 210 transitions. Second operand 108 states. [2018-07-25 08:39:20,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:20,557 INFO L93 Difference]: Finished difference Result 214 states and 214 transitions. [2018-07-25 08:39:20,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-07-25 08:39:20,557 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 209 [2018-07-25 08:39:20,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:20,558 INFO L225 Difference]: With dead ends: 214 [2018-07-25 08:39:20,558 INFO L226 Difference]: Without dead ends: 213 [2018-07-25 08:39:20,559 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=214, Invalid=11342, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 08:39:20,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-07-25 08:39:20,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 212. [2018-07-25 08:39:20,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2018-07-25 08:39:20,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 212 transitions. [2018-07-25 08:39:20,889 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 212 transitions. Word has length 209 [2018-07-25 08:39:20,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:20,889 INFO L472 AbstractCegarLoop]: Abstraction has 212 states and 212 transitions. [2018-07-25 08:39:20,889 INFO L473 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-07-25 08:39:20,889 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 212 transitions. [2018-07-25 08:39:20,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-07-25 08:39:20,890 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:20,890 INFO L354 BasicCegarLoop]: trace histogram [105, 104, 1, 1] [2018-07-25 08:39:20,891 INFO L415 AbstractCegarLoop]: === Iteration 105 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:20,891 INFO L82 PathProgramCache]: Analyzing trace with hash 612407728, now seen corresponding path program 104 times [2018-07-25 08:39:20,891 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:20,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:22,513 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 08:39:22,513 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:22,514 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2018-07-25 08:39:22,514 INFO L451 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-07-25 08:39:22,514 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-07-25 08:39:22,515 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=11556, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 08:39:22,515 INFO L87 Difference]: Start difference. First operand 212 states and 212 transitions. Second operand 109 states. [2018-07-25 08:39:25,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:25,387 INFO L93 Difference]: Finished difference Result 216 states and 216 transitions. [2018-07-25 08:39:25,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-07-25 08:39:25,387 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 211 [2018-07-25 08:39:25,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:25,387 INFO L225 Difference]: With dead ends: 216 [2018-07-25 08:39:25,387 INFO L226 Difference]: Without dead ends: 215 [2018-07-25 08:39:25,388 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=216, Invalid=11556, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 08:39:25,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-07-25 08:39:25,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 214. [2018-07-25 08:39:25,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-07-25 08:39:25,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 214 transitions. [2018-07-25 08:39:25,670 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 214 transitions. Word has length 211 [2018-07-25 08:39:25,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:25,670 INFO L472 AbstractCegarLoop]: Abstraction has 214 states and 214 transitions. [2018-07-25 08:39:25,670 INFO L473 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-07-25 08:39:25,670 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 214 transitions. [2018-07-25 08:39:25,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-07-25 08:39:25,671 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:25,671 INFO L354 BasicCegarLoop]: trace histogram [106, 105, 1, 1] [2018-07-25 08:39:25,671 INFO L415 AbstractCegarLoop]: === Iteration 106 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:25,671 INFO L82 PathProgramCache]: Analyzing trace with hash 113308146, now seen corresponding path program 105 times [2018-07-25 08:39:25,671 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:25,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:27,252 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 08:39:27,252 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:27,252 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108] total 108 [2018-07-25 08:39:27,253 INFO L451 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-07-25 08:39:27,253 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-07-25 08:39:27,254 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=11772, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 08:39:27,254 INFO L87 Difference]: Start difference. First operand 214 states and 214 transitions. Second operand 110 states. [2018-07-25 08:39:30,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:30,014 INFO L93 Difference]: Finished difference Result 218 states and 218 transitions. [2018-07-25 08:39:30,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-07-25 08:39:30,014 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 213 [2018-07-25 08:39:30,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:30,015 INFO L225 Difference]: With dead ends: 218 [2018-07-25 08:39:30,015 INFO L226 Difference]: Without dead ends: 217 [2018-07-25 08:39:30,016 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=218, Invalid=11772, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 08:39:30,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-07-25 08:39:30,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 216. [2018-07-25 08:39:30,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2018-07-25 08:39:30,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 216 transitions. [2018-07-25 08:39:30,299 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 216 transitions. Word has length 213 [2018-07-25 08:39:30,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:30,299 INFO L472 AbstractCegarLoop]: Abstraction has 216 states and 216 transitions. [2018-07-25 08:39:30,299 INFO L473 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-07-25 08:39:30,299 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 216 transitions. [2018-07-25 08:39:30,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-07-25 08:39:30,300 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:30,300 INFO L354 BasicCegarLoop]: trace histogram [107, 106, 1, 1] [2018-07-25 08:39:30,300 INFO L415 AbstractCegarLoop]: === Iteration 107 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:30,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1514946996, now seen corresponding path program 106 times [2018-07-25 08:39:30,300 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:30,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:32,092 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 08:39:32,092 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:32,092 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2018-07-25 08:39:32,093 INFO L451 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-07-25 08:39:32,093 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-07-25 08:39:32,093 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=11990, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 08:39:32,094 INFO L87 Difference]: Start difference. First operand 216 states and 216 transitions. Second operand 111 states. [2018-07-25 08:39:34,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:34,979 INFO L93 Difference]: Finished difference Result 220 states and 220 transitions. [2018-07-25 08:39:34,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-07-25 08:39:34,979 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 215 [2018-07-25 08:39:34,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:34,980 INFO L225 Difference]: With dead ends: 220 [2018-07-25 08:39:34,980 INFO L226 Difference]: Without dead ends: 219 [2018-07-25 08:39:34,980 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=220, Invalid=11990, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 08:39:34,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-07-25 08:39:35,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 218. [2018-07-25 08:39:35,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2018-07-25 08:39:35,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 218 transitions. [2018-07-25 08:39:35,269 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 218 transitions. Word has length 215 [2018-07-25 08:39:35,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:35,269 INFO L472 AbstractCegarLoop]: Abstraction has 218 states and 218 transitions. [2018-07-25 08:39:35,269 INFO L473 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-07-25 08:39:35,269 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 218 transitions. [2018-07-25 08:39:35,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-07-25 08:39:35,270 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:35,270 INFO L354 BasicCegarLoop]: trace histogram [108, 107, 1, 1] [2018-07-25 08:39:35,270 INFO L415 AbstractCegarLoop]: === Iteration 108 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:35,270 INFO L82 PathProgramCache]: Analyzing trace with hash -129849098, now seen corresponding path program 107 times [2018-07-25 08:39:35,270 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:35,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:37,000 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 08:39:37,001 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:37,001 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110] total 110 [2018-07-25 08:39:37,001 INFO L451 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-07-25 08:39:37,002 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-07-25 08:39:37,002 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=12210, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 08:39:37,002 INFO L87 Difference]: Start difference. First operand 218 states and 218 transitions. Second operand 112 states. [2018-07-25 08:39:40,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:40,139 INFO L93 Difference]: Finished difference Result 222 states and 222 transitions. [2018-07-25 08:39:40,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-07-25 08:39:40,139 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 217 [2018-07-25 08:39:40,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:40,140 INFO L225 Difference]: With dead ends: 222 [2018-07-25 08:39:40,140 INFO L226 Difference]: Without dead ends: 221 [2018-07-25 08:39:40,140 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=222, Invalid=12210, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 08:39:40,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-07-25 08:39:40,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 220. [2018-07-25 08:39:40,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2018-07-25 08:39:40,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 220 transitions. [2018-07-25 08:39:40,473 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 220 transitions. Word has length 217 [2018-07-25 08:39:40,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:40,474 INFO L472 AbstractCegarLoop]: Abstraction has 220 states and 220 transitions. [2018-07-25 08:39:40,474 INFO L473 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-07-25 08:39:40,474 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 220 transitions. [2018-07-25 08:39:40,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-07-25 08:39:40,474 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:40,474 INFO L354 BasicCegarLoop]: trace histogram [109, 108, 1, 1] [2018-07-25 08:39:40,475 INFO L415 AbstractCegarLoop]: === Iteration 109 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:40,475 INFO L82 PathProgramCache]: Analyzing trace with hash -230930504, now seen corresponding path program 108 times [2018-07-25 08:39:40,475 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:40,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:42,412 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 08:39:42,412 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:42,412 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111] total 111 [2018-07-25 08:39:42,412 INFO L451 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-07-25 08:39:42,413 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-07-25 08:39:42,413 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=12432, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 08:39:42,413 INFO L87 Difference]: Start difference. First operand 220 states and 220 transitions. Second operand 113 states. [2018-07-25 08:39:45,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:45,392 INFO L93 Difference]: Finished difference Result 224 states and 224 transitions. [2018-07-25 08:39:45,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-07-25 08:39:45,392 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 219 [2018-07-25 08:39:45,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:45,393 INFO L225 Difference]: With dead ends: 224 [2018-07-25 08:39:45,393 INFO L226 Difference]: Without dead ends: 223 [2018-07-25 08:39:45,393 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=224, Invalid=12432, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 08:39:45,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-07-25 08:39:45,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 222. [2018-07-25 08:39:45,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2018-07-25 08:39:45,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 222 transitions. [2018-07-25 08:39:45,701 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 222 transitions. Word has length 219 [2018-07-25 08:39:45,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:45,701 INFO L472 AbstractCegarLoop]: Abstraction has 222 states and 222 transitions. [2018-07-25 08:39:45,701 INFO L473 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-07-25 08:39:45,701 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 222 transitions. [2018-07-25 08:39:45,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-07-25 08:39:45,702 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:45,702 INFO L354 BasicCegarLoop]: trace histogram [110, 109, 1, 1] [2018-07-25 08:39:45,702 INFO L415 AbstractCegarLoop]: === Iteration 110 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:45,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1414086138, now seen corresponding path program 109 times [2018-07-25 08:39:45,702 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:45,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:47,482 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 08:39:47,483 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:47,483 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112] total 112 [2018-07-25 08:39:47,483 INFO L451 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-07-25 08:39:47,483 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-07-25 08:39:47,484 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=12656, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 08:39:47,484 INFO L87 Difference]: Start difference. First operand 222 states and 222 transitions. Second operand 114 states. [2018-07-25 08:39:50,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:50,679 INFO L93 Difference]: Finished difference Result 226 states and 226 transitions. [2018-07-25 08:39:50,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-07-25 08:39:50,679 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 221 [2018-07-25 08:39:50,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:50,680 INFO L225 Difference]: With dead ends: 226 [2018-07-25 08:39:50,680 INFO L226 Difference]: Without dead ends: 225 [2018-07-25 08:39:50,681 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=226, Invalid=12656, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 08:39:50,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-07-25 08:39:50,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 224. [2018-07-25 08:39:50,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2018-07-25 08:39:50,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 224 transitions. [2018-07-25 08:39:50,994 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 224 transitions. Word has length 221 [2018-07-25 08:39:50,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:50,994 INFO L472 AbstractCegarLoop]: Abstraction has 224 states and 224 transitions. [2018-07-25 08:39:50,994 INFO L473 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-07-25 08:39:50,994 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 224 transitions. [2018-07-25 08:39:50,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-07-25 08:39:50,995 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:50,995 INFO L354 BasicCegarLoop]: trace histogram [111, 110, 1, 1] [2018-07-25 08:39:50,995 INFO L415 AbstractCegarLoop]: === Iteration 111 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:50,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1727114172, now seen corresponding path program 110 times [2018-07-25 08:39:50,995 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:51,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:52,944 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 08:39:52,944 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:52,944 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113] total 113 [2018-07-25 08:39:52,945 INFO L451 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-07-25 08:39:52,945 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-07-25 08:39:52,946 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=12882, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 08:39:52,946 INFO L87 Difference]: Start difference. First operand 224 states and 224 transitions. Second operand 115 states. [2018-07-25 08:39:56,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:56,288 INFO L93 Difference]: Finished difference Result 228 states and 228 transitions. [2018-07-25 08:39:56,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-07-25 08:39:56,288 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 223 [2018-07-25 08:39:56,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:56,289 INFO L225 Difference]: With dead ends: 228 [2018-07-25 08:39:56,289 INFO L226 Difference]: Without dead ends: 227 [2018-07-25 08:39:56,289 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=228, Invalid=12882, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 08:39:56,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-07-25 08:39:56,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 226. [2018-07-25 08:39:56,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2018-07-25 08:39:56,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 226 transitions. [2018-07-25 08:39:56,635 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 226 transitions. Word has length 223 [2018-07-25 08:39:56,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:56,635 INFO L472 AbstractCegarLoop]: Abstraction has 226 states and 226 transitions. [2018-07-25 08:39:56,635 INFO L473 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-07-25 08:39:56,635 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 226 transitions. [2018-07-25 08:39:56,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-07-25 08:39:56,636 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:56,636 INFO L354 BasicCegarLoop]: trace histogram [112, 111, 1, 1] [2018-07-25 08:39:56,636 INFO L415 AbstractCegarLoop]: === Iteration 112 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:56,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1899344126, now seen corresponding path program 111 times [2018-07-25 08:39:56,636 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:56,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:58,737 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 08:39:58,737 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:58,738 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114] total 114 [2018-07-25 08:39:58,738 INFO L451 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-07-25 08:39:58,738 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-07-25 08:39:58,738 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=13110, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 08:39:58,739 INFO L87 Difference]: Start difference. First operand 226 states and 226 transitions. Second operand 116 states. [2018-07-25 08:40:02,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:02,187 INFO L93 Difference]: Finished difference Result 230 states and 230 transitions. [2018-07-25 08:40:02,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-07-25 08:40:02,188 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 225 [2018-07-25 08:40:02,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:02,188 INFO L225 Difference]: With dead ends: 230 [2018-07-25 08:40:02,188 INFO L226 Difference]: Without dead ends: 229 [2018-07-25 08:40:02,189 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=230, Invalid=13110, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 08:40:02,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-07-25 08:40:02,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 228. [2018-07-25 08:40:02,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2018-07-25 08:40:02,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 228 transitions. [2018-07-25 08:40:02,555 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 228 transitions. Word has length 225 [2018-07-25 08:40:02,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:02,556 INFO L472 AbstractCegarLoop]: Abstraction has 228 states and 228 transitions. [2018-07-25 08:40:02,556 INFO L473 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-07-25 08:40:02,556 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 228 transitions. [2018-07-25 08:40:02,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-07-25 08:40:02,557 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:02,557 INFO L354 BasicCegarLoop]: trace histogram [113, 112, 1, 1] [2018-07-25 08:40:02,557 INFO L415 AbstractCegarLoop]: === Iteration 113 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:02,557 INFO L82 PathProgramCache]: Analyzing trace with hash -91394624, now seen corresponding path program 112 times [2018-07-25 08:40:02,557 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:02,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:04,522 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 08:40:04,522 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:04,523 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115] total 115 [2018-07-25 08:40:04,523 INFO L451 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-07-25 08:40:04,523 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-07-25 08:40:04,523 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=13340, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 08:40:04,524 INFO L87 Difference]: Start difference. First operand 228 states and 228 transitions. Second operand 117 states. [2018-07-25 08:40:07,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:07,622 INFO L93 Difference]: Finished difference Result 232 states and 232 transitions. [2018-07-25 08:40:07,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-07-25 08:40:07,623 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 227 [2018-07-25 08:40:07,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:07,623 INFO L225 Difference]: With dead ends: 232 [2018-07-25 08:40:07,623 INFO L226 Difference]: Without dead ends: 231 [2018-07-25 08:40:07,624 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=232, Invalid=13340, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 08:40:07,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-07-25 08:40:07,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 230. [2018-07-25 08:40:07,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2018-07-25 08:40:07,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 230 transitions. [2018-07-25 08:40:07,953 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 230 transitions. Word has length 227 [2018-07-25 08:40:07,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:07,953 INFO L472 AbstractCegarLoop]: Abstraction has 230 states and 230 transitions. [2018-07-25 08:40:07,953 INFO L473 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-07-25 08:40:07,953 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 230 transitions. [2018-07-25 08:40:07,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-07-25 08:40:07,954 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:07,954 INFO L354 BasicCegarLoop]: trace histogram [114, 113, 1, 1] [2018-07-25 08:40:07,954 INFO L415 AbstractCegarLoop]: === Iteration 114 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:07,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1930886654, now seen corresponding path program 113 times [2018-07-25 08:40:07,954 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:08,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:09,979 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 08:40:09,980 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:09,980 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116] total 116 [2018-07-25 08:40:09,980 INFO L451 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-07-25 08:40:09,980 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-07-25 08:40:09,981 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=13572, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 08:40:09,981 INFO L87 Difference]: Start difference. First operand 230 states and 230 transitions. Second operand 118 states. [2018-07-25 08:40:13,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:13,475 INFO L93 Difference]: Finished difference Result 234 states and 234 transitions. [2018-07-25 08:40:13,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-07-25 08:40:13,475 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 229 [2018-07-25 08:40:13,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:13,476 INFO L225 Difference]: With dead ends: 234 [2018-07-25 08:40:13,476 INFO L226 Difference]: Without dead ends: 233 [2018-07-25 08:40:13,477 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=234, Invalid=13572, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 08:40:13,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-07-25 08:40:13,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 232. [2018-07-25 08:40:13,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2018-07-25 08:40:13,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 232 transitions. [2018-07-25 08:40:13,827 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 232 transitions. Word has length 229 [2018-07-25 08:40:13,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:13,827 INFO L472 AbstractCegarLoop]: Abstraction has 232 states and 232 transitions. [2018-07-25 08:40:13,827 INFO L473 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-07-25 08:40:13,827 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 232 transitions. [2018-07-25 08:40:13,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-07-25 08:40:13,828 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:13,828 INFO L354 BasicCegarLoop]: trace histogram [115, 114, 1, 1] [2018-07-25 08:40:13,828 INFO L415 AbstractCegarLoop]: === Iteration 115 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:13,828 INFO L82 PathProgramCache]: Analyzing trace with hash -156201532, now seen corresponding path program 114 times [2018-07-25 08:40:13,828 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:13,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:15,907 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 08:40:15,907 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:15,907 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117] total 117 [2018-07-25 08:40:15,908 INFO L451 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-07-25 08:40:15,908 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-07-25 08:40:15,908 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=13806, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 08:40:15,909 INFO L87 Difference]: Start difference. First operand 232 states and 232 transitions. Second operand 119 states. [2018-07-25 08:40:19,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:19,512 INFO L93 Difference]: Finished difference Result 236 states and 236 transitions. [2018-07-25 08:40:19,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-07-25 08:40:19,513 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 231 [2018-07-25 08:40:19,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:19,513 INFO L225 Difference]: With dead ends: 236 [2018-07-25 08:40:19,513 INFO L226 Difference]: Without dead ends: 235 [2018-07-25 08:40:19,514 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=236, Invalid=13806, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 08:40:19,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-07-25 08:40:19,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 234. [2018-07-25 08:40:19,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2018-07-25 08:40:19,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 234 transitions. [2018-07-25 08:40:19,885 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 234 transitions. Word has length 231 [2018-07-25 08:40:19,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:19,885 INFO L472 AbstractCegarLoop]: Abstraction has 234 states and 234 transitions. [2018-07-25 08:40:19,885 INFO L473 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-07-25 08:40:19,885 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 234 transitions. [2018-07-25 08:40:19,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-07-25 08:40:19,886 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:19,886 INFO L354 BasicCegarLoop]: trace histogram [116, 115, 1, 1] [2018-07-25 08:40:19,886 INFO L415 AbstractCegarLoop]: === Iteration 116 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:19,886 INFO L82 PathProgramCache]: Analyzing trace with hash 214184198, now seen corresponding path program 115 times [2018-07-25 08:40:19,886 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:19,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-07-25 08:40:20,167 WARN L541 AbstractCegarLoop]: Verification canceled [2018-07-25 08:40:20,178 WARN L202 ceAbstractionStarter]: Timeout [2018-07-25 08:40:20,178 INFO L202 PluginConnector]: Adding new model divisibilityWithArray.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 08:40:20 BoogieIcfgContainer [2018-07-25 08:40:20,178 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 08:40:20,179 INFO L168 Benchmark]: Toolchain (without parser) took 253432.80 ms. Allocated memory was 1.5 GB in the beginning and 2.0 GB in the end (delta: 515.9 MB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 222.0 MB). Peak memory consumption was 737.9 MB. Max. memory is 7.1 GB. [2018-07-25 08:40:20,180 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 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 08:40:20,181 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.94 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 08:40:20,181 INFO L168 Benchmark]: Boogie Preprocessor took 23.81 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 08:40:20,182 INFO L168 Benchmark]: RCFGBuilder took 225.87 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-25 08:40:20,182 INFO L168 Benchmark]: TraceAbstraction took 253130.41 ms. Allocated memory was 1.5 GB in the beginning and 2.0 GB in the end (delta: 515.9 MB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 211.4 MB). Peak memory consumption was 727.3 MB. Max. memory is 7.1 GB. [2018-07-25 08:40:20,184 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 0.21 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 47.94 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 23.81 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 225.87 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 253130.41 ms. Allocated memory was 1.5 GB in the beginning and 2.0 GB in the end (delta: 515.9 MB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 211.4 MB). Peak memory consumption was 727.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 30]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 30). Cancelled while BasicCegarLoop was analyzing trace of length 234 with TraceHistMax 116, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while PredicateComparison was comparing new predicate (quantifier-free) to 35 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. TIMEOUT Result, 253.0s OverallTime, 116 OverallIterations, 116 TraceHistogramMax, 143.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 230 SDtfs, 231 SDslu, 0 SDs, 0 SdLazy, 1061186 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 100.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6899 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6899 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 75.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=234occurred in iteration=115, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 15.7s AutomataMinimizationTime, 115 MinimizatonAttempts, 115 StatesRemovedByMinimization, 115 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 80.7s InterpolantComputationTime, 13455 NumberOfCodeBlocks, 13455 NumberOfCodeBlocksAsserted, 115 NumberOfCheckSat, 13340 ConstructedInterpolants, 0 QuantifiedInterpolants, 46287042 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 115 InterpolantComputations, 1 PerfectInterpolantSequences, 0/506920 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/divisibilityWithArray.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_08-40-20-194.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/divisibilityWithArray.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_08-40-20-194.csv Completed graceful shutdown