java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf -i ../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/codeblockAssertOrder01.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 08:56:02,635 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 08:56:02,637 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 08:56:02,652 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 08:56:02,653 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 08:56:02,654 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 08:56:02,655 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 08:56:02,658 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 08:56:02,659 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 08:56:02,661 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 08:56:02,663 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 08:56:02,663 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 08:56:02,664 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 08:56:02,665 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 08:56:02,669 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 08:56:02,670 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 08:56:02,671 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 08:56:02,675 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 08:56:02,682 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 08:56:02,684 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 08:56:02,686 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 08:56:02,688 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 08:56:02,691 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-25 08:56:02,705 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-07-25 08:56:02,724 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 08:56:02,725 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 08:56:02,727 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 08:56:02,727 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 08:56:02,727 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 08:56:02,727 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-25 08:56:02,728 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 08:56:02,728 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 08:56:02,787 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 08:56:02,805 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 08:56:02,813 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 08:56:02,815 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 08:56:02,815 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 08:56:02,816 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/codeblockAssertOrder01.bpl [2018-07-25 08:56:02,817 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/codeblockAssertOrder01.bpl' [2018-07-25 08:56:02,877 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 08:56:02,879 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 08:56:02,880 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 08:56:02,880 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 08:56:02,880 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 08:56:02,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:56:02" (1/1) ... [2018-07-25 08:56:02,916 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:56:02" (1/1) ... [2018-07-25 08:56:02,921 WARN L165 Inliner]: Program contained no entry procedure! [2018-07-25 08:56:02,921 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-07-25 08:56:02,922 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-07-25 08:56:02,924 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 08:56:02,925 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 08:56:02,925 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 08:56:02,925 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 08:56:02,937 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:56:02" (1/1) ... [2018-07-25 08:56:02,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:56:02" (1/1) ... [2018-07-25 08:56:02,938 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:56:02" (1/1) ... [2018-07-25 08:56:02,938 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:56:02" (1/1) ... [2018-07-25 08:56:02,942 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:56:02" (1/1) ... [2018-07-25 08:56:02,949 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:56:02" (1/1) ... [2018-07-25 08:56:02,950 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:56:02" (1/1) ... [2018-07-25 08:56:02,952 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 08:56:02,952 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 08:56:02,953 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 08:56:02,953 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 08:56:02,954 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:56:02" (1/1) ... [2018-07-25 08:56:03,042 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-25 08:56:03,043 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-25 08:56:03,199 INFO L270 CfgBuilder]: Using library mode [2018-07-25 08:56:03,200 INFO L202 PluginConnector]: Adding new model codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:56:03 BoogieIcfgContainer [2018-07-25 08:56:03,200 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 08:56:03,202 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 08:56:03,202 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 08:56:03,205 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 08:56:03,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:56:02" (1/2) ... [2018-07-25 08:56:03,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21fb164 and model type codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 08:56:03, skipping insertion in model container [2018-07-25 08:56:03,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:56:03" (2/2) ... [2018-07-25 08:56:03,210 INFO L112 eAbstractionObserver]: Analyzing ICFG codeblockAssertOrder01.bpl [2018-07-25 08:56:03,221 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-25 08:56:03,232 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 08:56:03,287 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 08:56:03,288 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 08:56:03,288 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 08:56:03,288 INFO L376 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-25 08:56:03,289 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 08:56:03,289 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 08:56:03,289 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 08:56:03,289 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 08:56:03,289 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 08:56:03,308 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2018-07-25 08:56:03,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-07-25 08:56:03,318 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:03,319 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-07-25 08:56:03,321 INFO L415 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:03,328 INFO L82 PathProgramCache]: Analyzing trace with hash 29984, now seen corresponding path program 1 times [2018-07-25 08:56:03,335 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:03,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:03,407 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 08:56:03,409 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:56:03,409 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-25 08:56:03,413 INFO L451 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-25 08:56:03,426 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-25 08:56:03,427 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-25 08:56:03,430 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 3 states. [2018-07-25 08:56:03,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:03,453 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-07-25 08:56:03,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-25 08:56:03,455 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-07-25 08:56:03,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:03,466 INFO L225 Difference]: With dead ends: 9 [2018-07-25 08:56:03,466 INFO L226 Difference]: Without dead ends: 5 [2018-07-25 08:56:03,470 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-25 08:56:03,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-07-25 08:56:03,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-07-25 08:56:03,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-07-25 08:56:03,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-07-25 08:56:03,507 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-07-25 08:56:03,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:03,508 INFO L472 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-07-25 08:56:03,508 INFO L473 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-25 08:56:03,508 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-07-25 08:56:03,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-25 08:56:03,509 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:03,509 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-25 08:56:03,509 INFO L415 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:03,510 INFO L82 PathProgramCache]: Analyzing trace with hash 927558, now seen corresponding path program 1 times [2018-07-25 08:56:03,510 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:03,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:03,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:03,530 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:03,530 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-25 08:56:03,533 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 08:56:03,533 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 08:56:03,533 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:56:03,534 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2018-07-25 08:56:03,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:03,555 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2018-07-25 08:56:03,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 08:56:03,557 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-07-25 08:56:03,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:03,557 INFO L225 Difference]: With dead ends: 8 [2018-07-25 08:56:03,558 INFO L226 Difference]: Without dead ends: 6 [2018-07-25 08:56:03,559 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:56:03,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-07-25 08:56:03,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-07-25 08:56:03,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-07-25 08:56:03,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-07-25 08:56:03,562 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2018-07-25 08:56:03,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:03,562 INFO L472 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-07-25 08:56:03,562 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 08:56:03,563 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-07-25 08:56:03,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-07-25 08:56:03,563 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:03,563 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-07-25 08:56:03,564 INFO L415 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:03,564 INFO L82 PathProgramCache]: Analyzing trace with hash 28752352, now seen corresponding path program 2 times [2018-07-25 08:56:03,564 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:03,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:03,607 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:03,607 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:03,607 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-25 08:56:03,608 INFO L451 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-25 08:56:03,608 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-25 08:56:03,608 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:56:03,609 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 5 states. [2018-07-25 08:56:03,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:03,635 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-07-25 08:56:03,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-25 08:56:03,636 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2018-07-25 08:56:03,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:03,637 INFO L225 Difference]: With dead ends: 9 [2018-07-25 08:56:03,637 INFO L226 Difference]: Without dead ends: 7 [2018-07-25 08:56:03,637 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:56:03,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-07-25 08:56:03,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-07-25 08:56:03,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-07-25 08:56:03,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-07-25 08:56:03,642 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2018-07-25 08:56:03,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:03,642 INFO L472 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-07-25 08:56:03,642 INFO L473 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-25 08:56:03,642 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-07-25 08:56:03,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-25 08:56:03,643 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:03,643 INFO L354 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2018-07-25 08:56:03,643 INFO L415 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:03,644 INFO L82 PathProgramCache]: Analyzing trace with hash 891320966, now seen corresponding path program 3 times [2018-07-25 08:56:03,644 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:03,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:03,676 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 08:56:03,676 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:03,676 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 08:56:03,677 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 08:56:03,677 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 08:56:03,677 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:56:03,678 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2018-07-25 08:56:03,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:03,691 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2018-07-25 08:56:03,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 08:56:03,691 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2018-07-25 08:56:03,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:03,692 INFO L225 Difference]: With dead ends: 10 [2018-07-25 08:56:03,692 INFO L226 Difference]: Without dead ends: 8 [2018-07-25 08:56:03,693 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:56:03,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-07-25 08:56:03,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-07-25 08:56:03,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-07-25 08:56:03,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-07-25 08:56:03,696 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2018-07-25 08:56:03,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:03,696 INFO L472 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-07-25 08:56:03,697 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 08:56:03,697 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-07-25 08:56:03,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-25 08:56:03,697 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:03,697 INFO L354 BasicCegarLoop]: trace histogram [4, 1, 1, 1] [2018-07-25 08:56:03,698 INFO L415 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:03,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1861144224, now seen corresponding path program 4 times [2018-07-25 08:56:03,698 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:03,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:03,778 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:03,778 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:03,779 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 08:56:03,779 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 08:56:03,779 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 08:56:03,780 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:56:03,780 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 7 states. [2018-07-25 08:56:03,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:03,795 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-07-25 08:56:03,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-25 08:56:03,795 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2018-07-25 08:56:03,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:03,796 INFO L225 Difference]: With dead ends: 11 [2018-07-25 08:56:03,796 INFO L226 Difference]: Without dead ends: 9 [2018-07-25 08:56:03,797 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:56:03,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-07-25 08:56:03,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-07-25 08:56:03,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-25 08:56:03,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-07-25 08:56:03,800 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-07-25 08:56:03,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:03,800 INFO L472 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-07-25 08:56:03,801 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 08:56:03,801 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-07-25 08:56:03,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-25 08:56:03,801 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:03,801 INFO L354 BasicCegarLoop]: trace histogram [5, 1, 1, 1] [2018-07-25 08:56:03,802 INFO L415 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:03,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1860894150, now seen corresponding path program 5 times [2018-07-25 08:56:03,802 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:03,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:03,869 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:03,869 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:03,870 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:56:03,870 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:56:03,870 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:56:03,871 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:56:03,871 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 8 states. [2018-07-25 08:56:03,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:03,885 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-07-25 08:56:03,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-25 08:56:03,885 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-07-25 08:56:03,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:03,886 INFO L225 Difference]: With dead ends: 12 [2018-07-25 08:56:03,886 INFO L226 Difference]: Without dead ends: 10 [2018-07-25 08:56:03,887 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:56:03,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-07-25 08:56:03,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-07-25 08:56:03,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-07-25 08:56:03,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-07-25 08:56:03,891 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-07-25 08:56:03,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:03,891 INFO L472 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-07-25 08:56:03,891 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:56:03,891 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-07-25 08:56:03,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-07-25 08:56:03,892 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:03,892 INFO L354 BasicCegarLoop]: trace histogram [6, 1, 1, 1] [2018-07-25 08:56:03,892 INFO L415 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:03,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1853141856, now seen corresponding path program 6 times [2018-07-25 08:56:03,893 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:03,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:03,954 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:03,959 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:03,960 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:56:03,960 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:56:03,961 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:56:03,961 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:56:03,962 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 9 states. [2018-07-25 08:56:03,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:03,993 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-07-25 08:56:03,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-25 08:56:03,993 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2018-07-25 08:56:03,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:03,994 INFO L225 Difference]: With dead ends: 13 [2018-07-25 08:56:03,995 INFO L226 Difference]: Without dead ends: 11 [2018-07-25 08:56:03,995 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:56:03,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-07-25 08:56:03,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-07-25 08:56:04,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-07-25 08:56:04,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-07-25 08:56:04,000 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-07-25 08:56:04,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:04,001 INFO L472 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-07-25 08:56:04,001 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:56:04,001 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-07-25 08:56:04,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-25 08:56:04,002 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:04,002 INFO L354 BasicCegarLoop]: trace histogram [7, 1, 1, 1] [2018-07-25 08:56:04,002 INFO L415 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:04,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1612820742, now seen corresponding path program 7 times [2018-07-25 08:56:04,003 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:04,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:04,056 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:04,057 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:04,057 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:56:04,058 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 08:56:04,058 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 08:56:04,061 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:56:04,061 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-07-25 08:56:04,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:04,081 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-07-25 08:56:04,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-25 08:56:04,082 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2018-07-25 08:56:04,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:04,083 INFO L225 Difference]: With dead ends: 14 [2018-07-25 08:56:04,083 INFO L226 Difference]: Without dead ends: 12 [2018-07-25 08:56:04,084 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:56:04,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-07-25 08:56:04,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-07-25 08:56:04,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-07-25 08:56:04,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-07-25 08:56:04,091 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-07-25 08:56:04,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:04,091 INFO L472 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-07-25 08:56:04,091 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 08:56:04,092 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-07-25 08:56:04,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-07-25 08:56:04,092 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:04,092 INFO L354 BasicCegarLoop]: trace histogram [8, 1, 1, 1] [2018-07-25 08:56:04,093 INFO L415 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:04,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1542166496, now seen corresponding path program 8 times [2018-07-25 08:56:04,094 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:04,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:04,149 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:04,150 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:04,150 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 08:56:04,151 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:56:04,151 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:56:04,151 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:56:04,152 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 11 states. [2018-07-25 08:56:04,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:04,166 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-07-25 08:56:04,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 08:56:04,166 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2018-07-25 08:56:04,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:04,167 INFO L225 Difference]: With dead ends: 15 [2018-07-25 08:56:04,167 INFO L226 Difference]: Without dead ends: 13 [2018-07-25 08:56:04,168 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:56:04,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-07-25 08:56:04,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-07-25 08:56:04,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-07-25 08:56:04,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-07-25 08:56:04,172 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-07-25 08:56:04,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:04,172 INFO L472 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-07-25 08:56:04,172 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 08:56:04,173 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-07-25 08:56:04,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-25 08:56:04,173 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:04,173 INFO L354 BasicCegarLoop]: trace histogram [9, 1, 1, 1] [2018-07-25 08:56:04,174 INFO L415 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:04,174 INFO L82 PathProgramCache]: Analyzing trace with hash -562523066, now seen corresponding path program 9 times [2018-07-25 08:56:04,174 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:04,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:04,227 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:04,228 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:04,228 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 08:56:04,228 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 08:56:04,229 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 08:56:04,229 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:56:04,229 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 12 states. [2018-07-25 08:56:04,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:04,261 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-07-25 08:56:04,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-25 08:56:04,262 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 12 [2018-07-25 08:56:04,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:04,262 INFO L225 Difference]: With dead ends: 16 [2018-07-25 08:56:04,263 INFO L226 Difference]: Without dead ends: 14 [2018-07-25 08:56:04,263 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:56:04,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-07-25 08:56:04,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-07-25 08:56:04,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-07-25 08:56:04,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-07-25 08:56:04,267 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-07-25 08:56:04,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:04,267 INFO L472 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-07-25 08:56:04,268 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 08:56:04,268 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-07-25 08:56:04,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-07-25 08:56:04,268 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:04,269 INFO L354 BasicCegarLoop]: trace histogram [10, 1, 1, 1] [2018-07-25 08:56:04,269 INFO L415 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:04,269 INFO L82 PathProgramCache]: Analyzing trace with hash -258347808, now seen corresponding path program 10 times [2018-07-25 08:56:04,269 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:04,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:04,323 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:04,323 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:04,326 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-07-25 08:56:04,326 INFO L451 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-25 08:56:04,326 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-25 08:56:04,327 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-07-25 08:56:04,327 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 13 states. [2018-07-25 08:56:04,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:04,355 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-07-25 08:56:04,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 08:56:04,355 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2018-07-25 08:56:04,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:04,356 INFO L225 Difference]: With dead ends: 17 [2018-07-25 08:56:04,357 INFO L226 Difference]: Without dead ends: 15 [2018-07-25 08:56:04,358 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-07-25 08:56:04,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-07-25 08:56:04,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-07-25 08:56:04,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-07-25 08:56:04,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-07-25 08:56:04,366 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2018-07-25 08:56:04,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:04,366 INFO L472 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-07-25 08:56:04,367 INFO L473 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-25 08:56:04,367 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-07-25 08:56:04,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-25 08:56:04,367 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:04,368 INFO L354 BasicCegarLoop]: trace histogram [11, 1, 1, 1] [2018-07-25 08:56:04,368 INFO L415 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:04,368 INFO L82 PathProgramCache]: Analyzing trace with hash 581150598, now seen corresponding path program 11 times [2018-07-25 08:56:04,368 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:04,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:04,448 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:04,449 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:04,449 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-07-25 08:56:04,450 INFO L451 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-25 08:56:04,450 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-25 08:56:04,450 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:56:04,451 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 14 states. [2018-07-25 08:56:04,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:04,474 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-07-25 08:56:04,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-25 08:56:04,476 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 14 [2018-07-25 08:56:04,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:04,477 INFO L225 Difference]: With dead ends: 18 [2018-07-25 08:56:04,477 INFO L226 Difference]: Without dead ends: 16 [2018-07-25 08:56:04,478 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:56:04,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-07-25 08:56:04,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-07-25 08:56:04,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-07-25 08:56:04,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-07-25 08:56:04,485 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2018-07-25 08:56:04,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:04,485 INFO L472 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-07-25 08:56:04,485 INFO L473 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-25 08:56:04,486 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-07-25 08:56:04,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-07-25 08:56:04,486 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:04,486 INFO L354 BasicCegarLoop]: trace histogram [12, 1, 1, 1] [2018-07-25 08:56:04,487 INFO L415 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:04,487 INFO L82 PathProgramCache]: Analyzing trace with hash 835797408, now seen corresponding path program 12 times [2018-07-25 08:56:04,487 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:04,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:04,545 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:04,545 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:04,545 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-07-25 08:56:04,546 INFO L451 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-25 08:56:04,546 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-25 08:56:04,547 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-07-25 08:56:04,547 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 15 states. [2018-07-25 08:56:04,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:04,562 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-07-25 08:56:04,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-25 08:56:04,563 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 15 [2018-07-25 08:56:04,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:04,564 INFO L225 Difference]: With dead ends: 19 [2018-07-25 08:56:04,564 INFO L226 Difference]: Without dead ends: 17 [2018-07-25 08:56:04,564 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-07-25 08:56:04,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-07-25 08:56:04,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-07-25 08:56:04,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-07-25 08:56:04,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-07-25 08:56:04,569 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2018-07-25 08:56:04,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:04,570 INFO L472 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-07-25 08:56:04,570 INFO L473 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-25 08:56:04,570 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-07-25 08:56:04,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-25 08:56:04,571 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:04,571 INFO L354 BasicCegarLoop]: trace histogram [13, 1, 1, 1] [2018-07-25 08:56:04,572 INFO L415 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:04,573 INFO L82 PathProgramCache]: Analyzing trace with hash 139913926, now seen corresponding path program 13 times [2018-07-25 08:56:04,573 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:04,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:04,631 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:04,631 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:04,632 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-25 08:56:04,632 INFO L451 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-25 08:56:04,632 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-25 08:56:04,633 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-07-25 08:56:04,633 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 16 states. [2018-07-25 08:56:04,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:04,645 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-07-25 08:56:04,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 08:56:04,646 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 16 [2018-07-25 08:56:04,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:04,646 INFO L225 Difference]: With dead ends: 20 [2018-07-25 08:56:04,646 INFO L226 Difference]: Without dead ends: 18 [2018-07-25 08:56:04,647 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-07-25 08:56:04,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-07-25 08:56:04,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-07-25 08:56:04,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-07-25 08:56:04,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-07-25 08:56:04,651 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2018-07-25 08:56:04,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:04,651 INFO L472 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-07-25 08:56:04,651 INFO L473 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-25 08:56:04,652 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-07-25 08:56:04,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-07-25 08:56:04,652 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:04,652 INFO L354 BasicCegarLoop]: trace histogram [14, 1, 1, 1] [2018-07-25 08:56:04,653 INFO L415 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:04,653 INFO L82 PathProgramCache]: Analyzing trace with hash 42362464, now seen corresponding path program 14 times [2018-07-25 08:56:04,653 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:04,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:04,701 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:04,702 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:04,702 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-07-25 08:56:04,703 INFO L451 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-25 08:56:04,703 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-25 08:56:04,703 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-07-25 08:56:04,704 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 17 states. [2018-07-25 08:56:04,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:04,724 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-07-25 08:56:04,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-25 08:56:04,724 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 17 [2018-07-25 08:56:04,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:04,725 INFO L225 Difference]: With dead ends: 21 [2018-07-25 08:56:04,725 INFO L226 Difference]: Without dead ends: 19 [2018-07-25 08:56:04,726 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-07-25 08:56:04,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-07-25 08:56:04,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-07-25 08:56:04,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-07-25 08:56:04,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-07-25 08:56:04,734 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2018-07-25 08:56:04,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:04,734 INFO L472 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-07-25 08:56:04,735 INFO L473 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-25 08:56:04,735 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-07-25 08:56:04,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 08:56:04,737 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:04,737 INFO L354 BasicCegarLoop]: trace histogram [15, 1, 1, 1] [2018-07-25 08:56:04,738 INFO L415 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:04,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1313234438, now seen corresponding path program 15 times [2018-07-25 08:56:04,738 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:04,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:04,809 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:04,810 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:04,810 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-07-25 08:56:04,811 INFO L451 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-25 08:56:04,814 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-25 08:56:04,815 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-07-25 08:56:04,815 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 18 states. [2018-07-25 08:56:04,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:04,842 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-07-25 08:56:04,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 08:56:04,843 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 18 [2018-07-25 08:56:04,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:04,844 INFO L225 Difference]: With dead ends: 22 [2018-07-25 08:56:04,844 INFO L226 Difference]: Without dead ends: 20 [2018-07-25 08:56:04,845 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-07-25 08:56:04,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-07-25 08:56:04,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-07-25 08:56:04,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-07-25 08:56:04,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-07-25 08:56:04,856 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2018-07-25 08:56:04,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:04,856 INFO L472 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-07-25 08:56:04,856 INFO L473 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-25 08:56:04,857 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-07-25 08:56:04,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-07-25 08:56:04,858 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:04,858 INFO L354 BasicCegarLoop]: trace histogram [16, 1, 1, 1] [2018-07-25 08:56:04,859 INFO L415 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:04,859 INFO L82 PathProgramCache]: Analyzing trace with hash 2055559968, now seen corresponding path program 16 times [2018-07-25 08:56:04,859 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:04,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:04,925 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:04,925 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:04,926 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-07-25 08:56:04,926 INFO L451 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-25 08:56:04,928 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-25 08:56:04,928 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-07-25 08:56:04,928 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 19 states. [2018-07-25 08:56:04,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:04,946 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-07-25 08:56:04,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-25 08:56:04,946 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 19 [2018-07-25 08:56:04,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:04,947 INFO L225 Difference]: With dead ends: 23 [2018-07-25 08:56:04,949 INFO L226 Difference]: Without dead ends: 21 [2018-07-25 08:56:04,949 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-07-25 08:56:04,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-07-25 08:56:04,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-07-25 08:56:04,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-07-25 08:56:04,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-07-25 08:56:04,953 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 19 [2018-07-25 08:56:04,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:04,954 INFO L472 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-07-25 08:56:04,954 INFO L473 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-25 08:56:04,954 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-07-25 08:56:04,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-25 08:56:04,955 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:04,955 INFO L354 BasicCegarLoop]: trace histogram [17, 1, 1, 1] [2018-07-25 08:56:04,955 INFO L415 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:04,956 INFO L82 PathProgramCache]: Analyzing trace with hash -702152378, now seen corresponding path program 17 times [2018-07-25 08:56:04,956 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:04,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:05,017 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:05,018 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:05,018 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-25 08:56:05,018 INFO L451 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-25 08:56:05,018 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-25 08:56:05,019 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:56:05,019 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 20 states. [2018-07-25 08:56:05,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:05,039 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-07-25 08:56:05,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 08:56:05,040 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 20 [2018-07-25 08:56:05,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:05,040 INFO L225 Difference]: With dead ends: 24 [2018-07-25 08:56:05,040 INFO L226 Difference]: Without dead ends: 22 [2018-07-25 08:56:05,041 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:56:05,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-07-25 08:56:05,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-07-25 08:56:05,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-07-25 08:56:05,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-07-25 08:56:05,046 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 20 [2018-07-25 08:56:05,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:05,046 INFO L472 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-07-25 08:56:05,046 INFO L473 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-25 08:56:05,046 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-07-25 08:56:05,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-07-25 08:56:05,047 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:05,047 INFO L354 BasicCegarLoop]: trace histogram [18, 1, 1, 1] [2018-07-25 08:56:05,048 INFO L415 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:05,048 INFO L82 PathProgramCache]: Analyzing trace with hash -291889184, now seen corresponding path program 18 times [2018-07-25 08:56:05,048 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:05,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:05,135 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:05,135 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:05,135 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-07-25 08:56:05,136 INFO L451 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-07-25 08:56:05,136 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-07-25 08:56:05,137 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-07-25 08:56:05,137 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 21 states. [2018-07-25 08:56:05,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:05,151 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-07-25 08:56:05,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-25 08:56:05,152 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 21 [2018-07-25 08:56:05,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:05,156 INFO L225 Difference]: With dead ends: 25 [2018-07-25 08:56:05,156 INFO L226 Difference]: Without dead ends: 23 [2018-07-25 08:56:05,158 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-07-25 08:56:05,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-07-25 08:56:05,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-07-25 08:56:05,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-07-25 08:56:05,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-07-25 08:56:05,167 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 21 [2018-07-25 08:56:05,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:05,168 INFO L472 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-07-25 08:56:05,168 INFO L473 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-07-25 08:56:05,168 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-07-25 08:56:05,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-25 08:56:05,169 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:05,169 INFO L354 BasicCegarLoop]: trace histogram [19, 1, 1, 1] [2018-07-25 08:56:05,169 INFO L415 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:05,170 INFO L82 PathProgramCache]: Analyzing trace with hash -458632058, now seen corresponding path program 19 times [2018-07-25 08:56:05,170 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:05,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:05,242 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:05,242 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:05,242 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-07-25 08:56:05,243 INFO L451 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-25 08:56:05,243 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-25 08:56:05,244 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:56:05,244 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 22 states. [2018-07-25 08:56:05,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:05,264 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-07-25 08:56:05,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 08:56:05,265 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 22 [2018-07-25 08:56:05,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:05,265 INFO L225 Difference]: With dead ends: 26 [2018-07-25 08:56:05,266 INFO L226 Difference]: Without dead ends: 24 [2018-07-25 08:56:05,267 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:56:05,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-07-25 08:56:05,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-07-25 08:56:05,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-07-25 08:56:05,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-07-25 08:56:05,272 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 22 [2018-07-25 08:56:05,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:05,273 INFO L472 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-07-25 08:56:05,273 INFO L473 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-25 08:56:05,273 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-07-25 08:56:05,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-07-25 08:56:05,274 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:05,274 INFO L354 BasicCegarLoop]: trace histogram [20, 1, 1, 1] [2018-07-25 08:56:05,275 INFO L415 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:05,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1332693856, now seen corresponding path program 20 times [2018-07-25 08:56:05,277 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:05,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:05,365 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 08:56:05,366 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:05,366 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-07-25 08:56:05,366 INFO L451 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-07-25 08:56:05,367 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-07-25 08:56:05,367 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-07-25 08:56:05,369 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 23 states. [2018-07-25 08:56:05,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:05,392 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-07-25 08:56:05,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-25 08:56:05,393 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 23 [2018-07-25 08:56:05,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:05,394 INFO L225 Difference]: With dead ends: 27 [2018-07-25 08:56:05,394 INFO L226 Difference]: Without dead ends: 25 [2018-07-25 08:56:05,397 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-07-25 08:56:05,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-07-25 08:56:05,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-07-25 08:56:05,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-07-25 08:56:05,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-07-25 08:56:05,402 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 23 [2018-07-25 08:56:05,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:05,402 INFO L472 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-07-25 08:56:05,402 INFO L473 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-07-25 08:56:05,403 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-07-25 08:56:05,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-25 08:56:05,403 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:05,404 INFO L354 BasicCegarLoop]: trace histogram [21, 1, 1, 1] [2018-07-25 08:56:05,404 INFO L415 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:05,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1636161478, now seen corresponding path program 21 times [2018-07-25 08:56:05,407 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:05,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:05,501 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:05,501 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:05,501 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-25 08:56:05,502 INFO L451 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-25 08:56:05,502 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-25 08:56:05,503 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:56:05,503 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 24 states. [2018-07-25 08:56:05,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:05,528 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-07-25 08:56:05,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-25 08:56:05,533 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 24 [2018-07-25 08:56:05,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:05,534 INFO L225 Difference]: With dead ends: 28 [2018-07-25 08:56:05,534 INFO L226 Difference]: Without dead ends: 26 [2018-07-25 08:56:05,535 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:56:05,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-07-25 08:56:05,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-07-25 08:56:05,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-07-25 08:56:05,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-07-25 08:56:05,542 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 24 [2018-07-25 08:56:05,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:05,543 INFO L472 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-07-25 08:56:05,543 INFO L473 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-25 08:56:05,543 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-07-25 08:56:05,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 08:56:05,544 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:05,544 INFO L354 BasicCegarLoop]: trace histogram [22, 1, 1, 1] [2018-07-25 08:56:05,546 INFO L415 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:05,547 INFO L82 PathProgramCache]: Analyzing trace with hash -818603680, now seen corresponding path program 22 times [2018-07-25 08:56:05,547 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:05,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:05,643 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:05,643 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:05,644 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-07-25 08:56:05,644 INFO L451 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-07-25 08:56:05,644 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-07-25 08:56:05,645 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:56:05,645 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 25 states. [2018-07-25 08:56:05,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:05,676 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-07-25 08:56:05,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-07-25 08:56:05,677 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 25 [2018-07-25 08:56:05,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:05,678 INFO L225 Difference]: With dead ends: 29 [2018-07-25 08:56:05,678 INFO L226 Difference]: Without dead ends: 27 [2018-07-25 08:56:05,679 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:56:05,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-07-25 08:56:05,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-07-25 08:56:05,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-07-25 08:56:05,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-07-25 08:56:05,688 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 25 [2018-07-25 08:56:05,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:05,688 INFO L472 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-07-25 08:56:05,688 INFO L473 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-07-25 08:56:05,688 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-07-25 08:56:05,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-25 08:56:05,689 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:05,689 INFO L354 BasicCegarLoop]: trace histogram [23, 1, 1, 1] [2018-07-25 08:56:05,689 INFO L415 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:05,690 INFO L82 PathProgramCache]: Analyzing trace with hash 393087750, now seen corresponding path program 23 times [2018-07-25 08:56:05,690 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:05,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:05,789 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:05,789 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:05,790 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-07-25 08:56:05,790 INFO L451 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-25 08:56:05,790 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-25 08:56:05,791 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:56:05,791 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 26 states. [2018-07-25 08:56:05,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:05,811 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2018-07-25 08:56:05,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-25 08:56:05,811 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 26 [2018-07-25 08:56:05,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:05,812 INFO L225 Difference]: With dead ends: 30 [2018-07-25 08:56:05,812 INFO L226 Difference]: Without dead ends: 28 [2018-07-25 08:56:05,813 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:56:05,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-07-25 08:56:05,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-07-25 08:56:05,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-07-25 08:56:05,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-07-25 08:56:05,821 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 26 [2018-07-25 08:56:05,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:05,822 INFO L472 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-07-25 08:56:05,822 INFO L473 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-07-25 08:56:05,822 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-07-25 08:56:05,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-07-25 08:56:05,824 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:05,824 INFO L354 BasicCegarLoop]: trace histogram [24, 1, 1, 1] [2018-07-25 08:56:05,824 INFO L415 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:05,825 INFO L82 PathProgramCache]: Analyzing trace with hash -699183584, now seen corresponding path program 24 times [2018-07-25 08:56:05,825 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:05,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:05,925 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:05,926 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:05,926 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-07-25 08:56:05,926 INFO L451 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-07-25 08:56:05,927 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-07-25 08:56:05,928 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-07-25 08:56:05,928 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 27 states. [2018-07-25 08:56:05,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:05,948 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-07-25 08:56:05,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-07-25 08:56:05,949 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 27 [2018-07-25 08:56:05,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:05,950 INFO L225 Difference]: With dead ends: 31 [2018-07-25 08:56:05,950 INFO L226 Difference]: Without dead ends: 29 [2018-07-25 08:56:05,951 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-07-25 08:56:05,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-07-25 08:56:05,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-07-25 08:56:05,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-07-25 08:56:05,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-07-25 08:56:05,958 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 27 [2018-07-25 08:56:05,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:05,958 INFO L472 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-07-25 08:56:05,959 INFO L473 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-07-25 08:56:05,959 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-07-25 08:56:05,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-07-25 08:56:05,959 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:05,960 INFO L354 BasicCegarLoop]: trace histogram [25, 1, 1, 1] [2018-07-25 08:56:05,960 INFO L415 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:05,960 INFO L82 PathProgramCache]: Analyzing trace with hash -199856570, now seen corresponding path program 25 times [2018-07-25 08:56:05,964 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:05,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:06,067 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:06,068 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:06,068 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-25 08:56:06,069 INFO L451 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-25 08:56:06,069 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-25 08:56:06,070 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:56:06,070 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 28 states. [2018-07-25 08:56:06,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:06,090 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2018-07-25 08:56:06,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-25 08:56:06,090 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 28 [2018-07-25 08:56:06,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:06,091 INFO L225 Difference]: With dead ends: 32 [2018-07-25 08:56:06,091 INFO L226 Difference]: Without dead ends: 30 [2018-07-25 08:56:06,092 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:56:06,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-07-25 08:56:06,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-07-25 08:56:06,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-07-25 08:56:06,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-07-25 08:56:06,098 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 28 [2018-07-25 08:56:06,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:06,098 INFO L472 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-07-25 08:56:06,098 INFO L473 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-25 08:56:06,099 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-07-25 08:56:06,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-25 08:56:06,099 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:06,099 INFO L354 BasicCegarLoop]: trace histogram [26, 1, 1, 1] [2018-07-25 08:56:06,100 INFO L415 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:06,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1900588320, now seen corresponding path program 26 times [2018-07-25 08:56:06,100 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:06,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:06,216 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:06,216 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:06,217 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-07-25 08:56:06,217 INFO L451 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-07-25 08:56:06,217 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-07-25 08:56:06,218 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:56:06,218 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 29 states. [2018-07-25 08:56:06,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:06,249 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-07-25 08:56:06,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-25 08:56:06,250 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 29 [2018-07-25 08:56:06,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:06,250 INFO L225 Difference]: With dead ends: 33 [2018-07-25 08:56:06,250 INFO L226 Difference]: Without dead ends: 31 [2018-07-25 08:56:06,251 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:56:06,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-07-25 08:56:06,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-07-25 08:56:06,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-07-25 08:56:06,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-07-25 08:56:06,259 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 29 [2018-07-25 08:56:06,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:06,259 INFO L472 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-07-25 08:56:06,259 INFO L473 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-07-25 08:56:06,259 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-07-25 08:56:06,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-07-25 08:56:06,260 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:06,260 INFO L354 BasicCegarLoop]: trace histogram [27, 1, 1, 1] [2018-07-25 08:56:06,261 INFO L415 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:06,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1211302278, now seen corresponding path program 27 times [2018-07-25 08:56:06,262 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:06,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:06,387 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:06,387 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:06,387 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-07-25 08:56:06,388 INFO L451 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-07-25 08:56:06,388 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-07-25 08:56:06,389 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:56:06,389 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 30 states. [2018-07-25 08:56:06,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:06,414 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-07-25 08:56:06,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-25 08:56:06,414 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 30 [2018-07-25 08:56:06,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:06,415 INFO L225 Difference]: With dead ends: 34 [2018-07-25 08:56:06,415 INFO L226 Difference]: Without dead ends: 32 [2018-07-25 08:56:06,416 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:56:06,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-07-25 08:56:06,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-07-25 08:56:06,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-07-25 08:56:06,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-07-25 08:56:06,429 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 30 [2018-07-25 08:56:06,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:06,429 INFO L472 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-07-25 08:56:06,430 INFO L473 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-07-25 08:56:06,430 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-07-25 08:56:06,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-07-25 08:56:06,430 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:06,430 INFO L354 BasicCegarLoop]: trace histogram [28, 1, 1, 1] [2018-07-25 08:56:06,431 INFO L415 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:06,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1104336992, now seen corresponding path program 28 times [2018-07-25 08:56:06,434 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:06,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:06,558 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:06,558 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:06,559 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-07-25 08:56:06,559 INFO L451 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-07-25 08:56:06,559 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-07-25 08:56:06,560 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-07-25 08:56:06,560 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 31 states. [2018-07-25 08:56:06,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:06,578 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-07-25 08:56:06,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-07-25 08:56:06,579 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 31 [2018-07-25 08:56:06,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:06,579 INFO L225 Difference]: With dead ends: 35 [2018-07-25 08:56:06,579 INFO L226 Difference]: Without dead ends: 33 [2018-07-25 08:56:06,580 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-07-25 08:56:06,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-07-25 08:56:06,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-07-25 08:56:06,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-07-25 08:56:06,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-07-25 08:56:06,587 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 31 [2018-07-25 08:56:06,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:06,588 INFO L472 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-07-25 08:56:06,588 INFO L473 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-07-25 08:56:06,588 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-07-25 08:56:06,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-07-25 08:56:06,589 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:06,589 INFO L354 BasicCegarLoop]: trace histogram [29, 1, 1, 1] [2018-07-25 08:56:06,589 INFO L415 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:06,589 INFO L82 PathProgramCache]: Analyzing trace with hash 125289670, now seen corresponding path program 29 times [2018-07-25 08:56:06,590 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:06,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:06,721 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:06,722 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:06,722 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-25 08:56:06,723 INFO L451 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-25 08:56:06,723 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-25 08:56:06,724 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:56:06,724 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 32 states. [2018-07-25 08:56:06,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:06,746 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2018-07-25 08:56:06,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-07-25 08:56:06,747 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 32 [2018-07-25 08:56:06,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:06,747 INFO L225 Difference]: With dead ends: 36 [2018-07-25 08:56:06,748 INFO L226 Difference]: Without dead ends: 34 [2018-07-25 08:56:06,749 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:56:06,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-07-25 08:56:06,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-07-25 08:56:06,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-07-25 08:56:06,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-07-25 08:56:06,755 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 32 [2018-07-25 08:56:06,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:06,755 INFO L472 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2018-07-25 08:56:06,755 INFO L473 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-25 08:56:06,755 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-07-25 08:56:06,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-07-25 08:56:06,756 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:06,756 INFO L354 BasicCegarLoop]: trace histogram [30, 1, 1, 1] [2018-07-25 08:56:06,756 INFO L415 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:06,757 INFO L82 PathProgramCache]: Analyzing trace with hash -410989472, now seen corresponding path program 30 times [2018-07-25 08:56:06,757 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:06,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:06,906 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:06,906 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:06,906 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-07-25 08:56:06,907 INFO L451 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-07-25 08:56:06,907 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-07-25 08:56:06,908 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 08:56:06,908 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 33 states. [2018-07-25 08:56:06,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:06,934 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-07-25 08:56:06,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-25 08:56:06,934 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 33 [2018-07-25 08:56:06,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:06,935 INFO L225 Difference]: With dead ends: 37 [2018-07-25 08:56:06,935 INFO L226 Difference]: Without dead ends: 35 [2018-07-25 08:56:06,936 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 08:56:06,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-07-25 08:56:06,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-07-25 08:56:06,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-07-25 08:56:06,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-07-25 08:56:06,939 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 33 [2018-07-25 08:56:06,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:06,940 INFO L472 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-07-25 08:56:06,940 INFO L473 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-07-25 08:56:06,940 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-07-25 08:56:06,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-07-25 08:56:06,940 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:06,941 INFO L354 BasicCegarLoop]: trace histogram [31, 1, 1, 1] [2018-07-25 08:56:06,941 INFO L415 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:06,941 INFO L82 PathProgramCache]: Analyzing trace with hash 144226310, now seen corresponding path program 31 times [2018-07-25 08:56:06,941 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:06,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:07,100 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:07,101 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:07,101 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-07-25 08:56:07,101 INFO L451 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-07-25 08:56:07,102 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-07-25 08:56:07,103 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:56:07,103 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 34 states. [2018-07-25 08:56:07,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:07,122 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-07-25 08:56:07,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-25 08:56:07,122 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 34 [2018-07-25 08:56:07,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:07,123 INFO L225 Difference]: With dead ends: 38 [2018-07-25 08:56:07,123 INFO L226 Difference]: Without dead ends: 36 [2018-07-25 08:56:07,124 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:56:07,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-07-25 08:56:07,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-07-25 08:56:07,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-07-25 08:56:07,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-07-25 08:56:07,133 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 34 [2018-07-25 08:56:07,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:07,134 INFO L472 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-07-25 08:56:07,134 INFO L473 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-07-25 08:56:07,134 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-07-25 08:56:07,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-07-25 08:56:07,140 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:07,140 INFO L354 BasicCegarLoop]: trace histogram [32, 1, 1, 1] [2018-07-25 08:56:07,140 INFO L415 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:07,140 INFO L82 PathProgramCache]: Analyzing trace with hash 176046368, now seen corresponding path program 32 times [2018-07-25 08:56:07,141 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:07,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:07,350 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:07,350 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:07,350 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-07-25 08:56:07,351 INFO L451 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-07-25 08:56:07,351 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-07-25 08:56:07,355 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 08:56:07,355 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 35 states. [2018-07-25 08:56:07,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:07,383 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-07-25 08:56:07,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-07-25 08:56:07,384 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 35 [2018-07-25 08:56:07,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:07,384 INFO L225 Difference]: With dead ends: 39 [2018-07-25 08:56:07,384 INFO L226 Difference]: Without dead ends: 37 [2018-07-25 08:56:07,386 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 08:56:07,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-07-25 08:56:07,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-07-25 08:56:07,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-07-25 08:56:07,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-07-25 08:56:07,391 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 35 [2018-07-25 08:56:07,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:07,391 INFO L472 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-07-25 08:56:07,391 INFO L473 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-07-25 08:56:07,391 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-07-25 08:56:07,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-07-25 08:56:07,392 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:07,392 INFO L354 BasicCegarLoop]: trace histogram [33, 1, 1, 1] [2018-07-25 08:56:07,392 INFO L415 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:07,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1162468166, now seen corresponding path program 33 times [2018-07-25 08:56:07,393 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:07,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:07,550 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:07,551 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:07,551 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-25 08:56:07,551 INFO L451 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-25 08:56:07,552 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-25 08:56:07,552 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 08:56:07,553 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 36 states. [2018-07-25 08:56:07,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:07,582 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2018-07-25 08:56:07,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-07-25 08:56:07,583 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 36 [2018-07-25 08:56:07,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:07,583 INFO L225 Difference]: With dead ends: 40 [2018-07-25 08:56:07,584 INFO L226 Difference]: Without dead ends: 38 [2018-07-25 08:56:07,585 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 08:56:07,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-07-25 08:56:07,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-07-25 08:56:07,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-07-25 08:56:07,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2018-07-25 08:56:07,587 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 36 [2018-07-25 08:56:07,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:07,588 INFO L472 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2018-07-25 08:56:07,588 INFO L473 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-25 08:56:07,588 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2018-07-25 08:56:07,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-07-25 08:56:07,588 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:07,588 INFO L354 BasicCegarLoop]: trace histogram [34, 1, 1, 1] [2018-07-25 08:56:07,589 INFO L415 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:07,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1676772832, now seen corresponding path program 34 times [2018-07-25 08:56:07,589 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:07,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:07,740 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:07,741 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:07,741 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-07-25 08:56:07,741 INFO L451 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-07-25 08:56:07,741 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-07-25 08:56:07,742 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 08:56:07,744 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 37 states. [2018-07-25 08:56:07,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:07,770 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-07-25 08:56:07,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-07-25 08:56:07,770 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 37 [2018-07-25 08:56:07,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:07,771 INFO L225 Difference]: With dead ends: 41 [2018-07-25 08:56:07,771 INFO L226 Difference]: Without dead ends: 39 [2018-07-25 08:56:07,772 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 08:56:07,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-07-25 08:56:07,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-07-25 08:56:07,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-07-25 08:56:07,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-07-25 08:56:07,775 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 37 [2018-07-25 08:56:07,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:07,775 INFO L472 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-07-25 08:56:07,779 INFO L473 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-07-25 08:56:07,779 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-07-25 08:56:07,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-07-25 08:56:07,779 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:07,780 INFO L354 BasicCegarLoop]: trace histogram [35, 1, 1, 1] [2018-07-25 08:56:07,780 INFO L415 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:07,780 INFO L82 PathProgramCache]: Analyzing trace with hash 440348294, now seen corresponding path program 35 times [2018-07-25 08:56:07,780 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:07,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:07,924 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:07,924 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:07,924 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-07-25 08:56:07,925 INFO L451 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-07-25 08:56:07,925 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-07-25 08:56:07,926 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:56:07,926 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 38 states. [2018-07-25 08:56:07,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:07,947 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2018-07-25 08:56:07,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-25 08:56:07,947 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 38 [2018-07-25 08:56:07,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:07,948 INFO L225 Difference]: With dead ends: 42 [2018-07-25 08:56:07,948 INFO L226 Difference]: Without dead ends: 40 [2018-07-25 08:56:07,949 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:56:07,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-07-25 08:56:07,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-07-25 08:56:07,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-07-25 08:56:07,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2018-07-25 08:56:07,951 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 38 [2018-07-25 08:56:07,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:07,952 INFO L472 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2018-07-25 08:56:07,952 INFO L473 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-07-25 08:56:07,952 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2018-07-25 08:56:07,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-07-25 08:56:07,952 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:07,952 INFO L354 BasicCegarLoop]: trace histogram [36, 1, 1, 1] [2018-07-25 08:56:07,953 INFO L415 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:07,953 INFO L82 PathProgramCache]: Analyzing trace with hash 765893280, now seen corresponding path program 36 times [2018-07-25 08:56:07,953 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:07,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:08,101 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:08,101 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:08,102 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-07-25 08:56:08,102 INFO L451 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-07-25 08:56:08,102 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-07-25 08:56:08,103 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 08:56:08,103 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 39 states. [2018-07-25 08:56:08,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:08,123 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-07-25 08:56:08,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-25 08:56:08,123 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 39 [2018-07-25 08:56:08,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:08,124 INFO L225 Difference]: With dead ends: 43 [2018-07-25 08:56:08,124 INFO L226 Difference]: Without dead ends: 41 [2018-07-25 08:56:08,125 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 08:56:08,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-07-25 08:56:08,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-07-25 08:56:08,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-07-25 08:56:08,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-07-25 08:56:08,127 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 39 [2018-07-25 08:56:08,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:08,128 INFO L472 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-07-25 08:56:08,128 INFO L473 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-07-25 08:56:08,128 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-07-25 08:56:08,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-07-25 08:56:08,128 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:08,128 INFO L354 BasicCegarLoop]: trace histogram [37, 1, 1, 1] [2018-07-25 08:56:08,129 INFO L415 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:08,129 INFO L82 PathProgramCache]: Analyzing trace with hash -2027114042, now seen corresponding path program 37 times [2018-07-25 08:56:08,129 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:08,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:08,287 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:08,287 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:08,288 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-25 08:56:08,288 INFO L451 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-25 08:56:08,288 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-25 08:56:08,289 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 08:56:08,289 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 40 states. [2018-07-25 08:56:08,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:08,310 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2018-07-25 08:56:08,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-07-25 08:56:08,311 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 40 [2018-07-25 08:56:08,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:08,311 INFO L225 Difference]: With dead ends: 44 [2018-07-25 08:56:08,311 INFO L226 Difference]: Without dead ends: 42 [2018-07-25 08:56:08,312 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 08:56:08,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-07-25 08:56:08,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-07-25 08:56:08,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-07-25 08:56:08,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2018-07-25 08:56:08,315 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 40 [2018-07-25 08:56:08,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:08,315 INFO L472 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2018-07-25 08:56:08,315 INFO L473 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-25 08:56:08,315 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2018-07-25 08:56:08,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-07-25 08:56:08,316 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:08,316 INFO L354 BasicCegarLoop]: trace histogram [38, 1, 1, 1] [2018-07-25 08:56:08,316 INFO L415 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:08,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1583972192, now seen corresponding path program 38 times [2018-07-25 08:56:08,317 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:08,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:08,464 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:08,465 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:08,465 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-07-25 08:56:08,465 INFO L451 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-07-25 08:56:08,465 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-07-25 08:56:08,466 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 08:56:08,467 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 41 states. [2018-07-25 08:56:08,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:08,490 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-07-25 08:56:08,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-07-25 08:56:08,491 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 41 [2018-07-25 08:56:08,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:08,491 INFO L225 Difference]: With dead ends: 45 [2018-07-25 08:56:08,491 INFO L226 Difference]: Without dead ends: 43 [2018-07-25 08:56:08,492 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 08:56:08,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-07-25 08:56:08,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-07-25 08:56:08,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-07-25 08:56:08,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-07-25 08:56:08,495 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 41 [2018-07-25 08:56:08,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:08,495 INFO L472 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-07-25 08:56:08,495 INFO L473 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-07-25 08:56:08,495 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-07-25 08:56:08,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-07-25 08:56:08,496 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:08,496 INFO L354 BasicCegarLoop]: trace histogram [39, 1, 1, 1] [2018-07-25 08:56:08,496 INFO L415 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:08,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1858495750, now seen corresponding path program 39 times [2018-07-25 08:56:08,497 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:08,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:08,658 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:08,659 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:08,659 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-07-25 08:56:08,659 INFO L451 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-07-25 08:56:08,660 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-07-25 08:56:08,660 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 08:56:08,661 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 42 states. [2018-07-25 08:56:08,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:08,678 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2018-07-25 08:56:08,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-07-25 08:56:08,679 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 42 [2018-07-25 08:56:08,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:08,679 INFO L225 Difference]: With dead ends: 46 [2018-07-25 08:56:08,679 INFO L226 Difference]: Without dead ends: 44 [2018-07-25 08:56:08,681 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 08:56:08,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-07-25 08:56:08,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-07-25 08:56:08,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-07-25 08:56:08,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2018-07-25 08:56:08,683 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 42 [2018-07-25 08:56:08,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:08,683 INFO L472 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2018-07-25 08:56:08,683 INFO L473 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-07-25 08:56:08,683 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2018-07-25 08:56:08,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-07-25 08:56:08,684 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:08,684 INFO L354 BasicCegarLoop]: trace histogram [40, 1, 1, 1] [2018-07-25 08:56:08,684 INFO L415 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:08,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1778791456, now seen corresponding path program 40 times [2018-07-25 08:56:08,684 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:08,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:08,851 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:08,851 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:08,851 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-07-25 08:56:08,852 INFO L451 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-07-25 08:56:08,852 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-07-25 08:56:08,853 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 08:56:08,853 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 43 states. [2018-07-25 08:56:08,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:08,880 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-07-25 08:56:08,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-07-25 08:56:08,880 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 43 [2018-07-25 08:56:08,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:08,881 INFO L225 Difference]: With dead ends: 47 [2018-07-25 08:56:08,881 INFO L226 Difference]: Without dead ends: 45 [2018-07-25 08:56:08,882 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 08:56:08,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-07-25 08:56:08,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-07-25 08:56:08,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-07-25 08:56:08,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-07-25 08:56:08,885 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 43 [2018-07-25 08:56:08,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:08,885 INFO L472 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-07-25 08:56:08,885 INFO L473 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-07-25 08:56:08,885 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-07-25 08:56:08,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-07-25 08:56:08,886 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:08,886 INFO L354 BasicCegarLoop]: trace histogram [41, 1, 1, 1] [2018-07-25 08:56:08,886 INFO L415 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:08,886 INFO L82 PathProgramCache]: Analyzing trace with hash -692041658, now seen corresponding path program 41 times [2018-07-25 08:56:08,886 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:08,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:09,056 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:09,057 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:09,057 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-25 08:56:09,057 INFO L451 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-25 08:56:09,058 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-25 08:56:09,059 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:56:09,059 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 44 states. [2018-07-25 08:56:09,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:09,078 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2018-07-25 08:56:09,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-25 08:56:09,080 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 44 [2018-07-25 08:56:09,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:09,080 INFO L225 Difference]: With dead ends: 48 [2018-07-25 08:56:09,080 INFO L226 Difference]: Without dead ends: 46 [2018-07-25 08:56:09,082 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:56:09,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-07-25 08:56:09,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-07-25 08:56:09,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-07-25 08:56:09,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2018-07-25 08:56:09,085 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 44 [2018-07-25 08:56:09,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:09,085 INFO L472 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2018-07-25 08:56:09,085 INFO L473 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-25 08:56:09,085 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2018-07-25 08:56:09,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-07-25 08:56:09,086 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:09,086 INFO L354 BasicCegarLoop]: trace histogram [42, 1, 1, 1] [2018-07-25 08:56:09,086 INFO L415 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:09,088 INFO L82 PathProgramCache]: Analyzing trace with hash 21543136, now seen corresponding path program 42 times [2018-07-25 08:56:09,088 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:09,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:09,267 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:09,267 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:09,267 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-07-25 08:56:09,268 INFO L451 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-07-25 08:56:09,268 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-07-25 08:56:09,269 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 08:56:09,270 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 45 states. [2018-07-25 08:56:09,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:09,295 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-07-25 08:56:09,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-07-25 08:56:09,295 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 45 [2018-07-25 08:56:09,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:09,296 INFO L225 Difference]: With dead ends: 49 [2018-07-25 08:56:09,296 INFO L226 Difference]: Without dead ends: 47 [2018-07-25 08:56:09,297 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 08:56:09,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-07-25 08:56:09,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-07-25 08:56:09,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-07-25 08:56:09,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-07-25 08:56:09,301 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 45 [2018-07-25 08:56:09,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:09,303 INFO L472 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-07-25 08:56:09,303 INFO L473 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-07-25 08:56:09,303 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-07-25 08:56:09,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-07-25 08:56:09,304 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:09,304 INFO L354 BasicCegarLoop]: trace histogram [43, 1, 1, 1] [2018-07-25 08:56:09,304 INFO L415 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:09,304 INFO L82 PathProgramCache]: Analyzing trace with hash 667835270, now seen corresponding path program 43 times [2018-07-25 08:56:09,304 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:09,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:09,478 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:09,478 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:09,478 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-07-25 08:56:09,479 INFO L451 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-07-25 08:56:09,479 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-07-25 08:56:09,480 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 08:56:09,482 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 46 states. [2018-07-25 08:56:09,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:09,509 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2018-07-25 08:56:09,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-07-25 08:56:09,509 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 46 [2018-07-25 08:56:09,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:09,510 INFO L225 Difference]: With dead ends: 50 [2018-07-25 08:56:09,510 INFO L226 Difference]: Without dead ends: 48 [2018-07-25 08:56:09,511 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 08:56:09,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-07-25 08:56:09,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-07-25 08:56:09,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-07-25 08:56:09,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2018-07-25 08:56:09,515 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 46 [2018-07-25 08:56:09,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:09,515 INFO L472 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2018-07-25 08:56:09,515 INFO L473 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-07-25 08:56:09,516 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2018-07-25 08:56:09,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-07-25 08:56:09,516 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:09,516 INFO L354 BasicCegarLoop]: trace histogram [44, 1, 1, 1] [2018-07-25 08:56:09,516 INFO L415 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:09,517 INFO L82 PathProgramCache]: Analyzing trace with hash -771945056, now seen corresponding path program 44 times [2018-07-25 08:56:09,517 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:09,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:09,731 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:09,732 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:09,732 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-07-25 08:56:09,732 INFO L451 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-07-25 08:56:09,733 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-07-25 08:56:09,734 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 08:56:09,735 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 47 states. [2018-07-25 08:56:09,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:09,761 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-07-25 08:56:09,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-07-25 08:56:09,761 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 47 [2018-07-25 08:56:09,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:09,762 INFO L225 Difference]: With dead ends: 51 [2018-07-25 08:56:09,762 INFO L226 Difference]: Without dead ends: 49 [2018-07-25 08:56:09,763 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 08:56:09,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-07-25 08:56:09,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-07-25 08:56:09,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-07-25 08:56:09,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-07-25 08:56:09,767 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 47 [2018-07-25 08:56:09,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:09,767 INFO L472 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-07-25 08:56:09,767 INFO L473 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-07-25 08:56:09,767 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-07-25 08:56:09,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-07-25 08:56:09,768 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:09,768 INFO L354 BasicCegarLoop]: trace histogram [45, 1, 1, 1] [2018-07-25 08:56:09,768 INFO L415 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:09,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1839505094, now seen corresponding path program 45 times [2018-07-25 08:56:09,769 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:09,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:10,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:10,000 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:10,000 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-25 08:56:10,001 INFO L451 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-25 08:56:10,001 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-25 08:56:10,002 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 08:56:10,002 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 48 states. [2018-07-25 08:56:10,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:10,024 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2018-07-25 08:56:10,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-07-25 08:56:10,024 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 48 [2018-07-25 08:56:10,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:10,025 INFO L225 Difference]: With dead ends: 52 [2018-07-25 08:56:10,025 INFO L226 Difference]: Without dead ends: 50 [2018-07-25 08:56:10,026 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 08:56:10,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-07-25 08:56:10,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-07-25 08:56:10,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-07-25 08:56:10,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2018-07-25 08:56:10,028 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 48 [2018-07-25 08:56:10,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:10,028 INFO L472 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2018-07-25 08:56:10,029 INFO L473 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-25 08:56:10,029 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2018-07-25 08:56:10,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-07-25 08:56:10,029 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:10,030 INFO L354 BasicCegarLoop]: trace histogram [46, 1, 1, 1] [2018-07-25 08:56:10,030 INFO L415 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:10,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1190081120, now seen corresponding path program 46 times [2018-07-25 08:56:10,030 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:10,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:10,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:10,207 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:10,207 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-07-25 08:56:10,207 INFO L451 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-07-25 08:56:10,208 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-07-25 08:56:10,208 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 08:56:10,209 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 49 states. [2018-07-25 08:56:10,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:10,231 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-07-25 08:56:10,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-07-25 08:56:10,232 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 49 [2018-07-25 08:56:10,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:10,232 INFO L225 Difference]: With dead ends: 53 [2018-07-25 08:56:10,233 INFO L226 Difference]: Without dead ends: 51 [2018-07-25 08:56:10,234 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 08:56:10,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-07-25 08:56:10,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-07-25 08:56:10,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-07-25 08:56:10,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-07-25 08:56:10,237 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 49 [2018-07-25 08:56:10,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:10,238 INFO L472 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-07-25 08:56:10,238 INFO L473 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-07-25 08:56:10,238 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-07-25 08:56:10,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-07-25 08:56:10,238 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:10,239 INFO L354 BasicCegarLoop]: trace histogram [47, 1, 1, 1] [2018-07-25 08:56:10,239 INFO L415 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:10,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1762192890, now seen corresponding path program 47 times [2018-07-25 08:56:10,239 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:10,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:10,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:10,415 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:10,415 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-07-25 08:56:10,415 INFO L451 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-07-25 08:56:10,416 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-07-25 08:56:10,416 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:56:10,417 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 50 states. [2018-07-25 08:56:10,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:10,437 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2018-07-25 08:56:10,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-07-25 08:56:10,437 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 50 [2018-07-25 08:56:10,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:10,438 INFO L225 Difference]: With dead ends: 54 [2018-07-25 08:56:10,438 INFO L226 Difference]: Without dead ends: 52 [2018-07-25 08:56:10,439 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:56:10,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-07-25 08:56:10,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-07-25 08:56:10,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-07-25 08:56:10,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2018-07-25 08:56:10,441 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 50 [2018-07-25 08:56:10,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:10,442 INFO L472 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2018-07-25 08:56:10,442 INFO L473 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-07-25 08:56:10,442 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2018-07-25 08:56:10,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-07-25 08:56:10,443 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:10,443 INFO L354 BasicCegarLoop]: trace histogram [48, 1, 1, 1] [2018-07-25 08:56:10,443 INFO L415 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:10,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1206593312, now seen corresponding path program 48 times [2018-07-25 08:56:10,443 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:10,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:10,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:10,625 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:10,625 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-07-25 08:56:10,625 INFO L451 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-07-25 08:56:10,626 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-07-25 08:56:10,627 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 08:56:10,627 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 51 states. [2018-07-25 08:56:10,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:10,652 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-07-25 08:56:10,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-07-25 08:56:10,653 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 51 [2018-07-25 08:56:10,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:10,653 INFO L225 Difference]: With dead ends: 55 [2018-07-25 08:56:10,654 INFO L226 Difference]: Without dead ends: 53 [2018-07-25 08:56:10,655 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 08:56:10,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-07-25 08:56:10,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-07-25 08:56:10,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-07-25 08:56:10,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-07-25 08:56:10,657 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 51 [2018-07-25 08:56:10,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:10,658 INFO L472 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-07-25 08:56:10,658 INFO L473 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-07-25 08:56:10,658 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-07-25 08:56:10,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-07-25 08:56:10,659 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:10,659 INFO L354 BasicCegarLoop]: trace histogram [49, 1, 1, 1] [2018-07-25 08:56:10,659 INFO L415 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:10,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1250314938, now seen corresponding path program 49 times [2018-07-25 08:56:10,659 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:10,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:10,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:10,836 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:10,836 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-25 08:56:10,837 INFO L451 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-25 08:56:10,837 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-25 08:56:10,838 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 08:56:10,838 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 52 states. [2018-07-25 08:56:10,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:10,866 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2018-07-25 08:56:10,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-07-25 08:56:10,866 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 52 [2018-07-25 08:56:10,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:10,867 INFO L225 Difference]: With dead ends: 56 [2018-07-25 08:56:10,867 INFO L226 Difference]: Without dead ends: 54 [2018-07-25 08:56:10,868 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 08:56:10,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-07-25 08:56:10,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-07-25 08:56:10,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-07-25 08:56:10,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2018-07-25 08:56:10,871 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 52 [2018-07-25 08:56:10,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:10,871 INFO L472 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2018-07-25 08:56:10,871 INFO L473 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-25 08:56:10,871 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2018-07-25 08:56:10,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-07-25 08:56:10,872 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:10,872 INFO L354 BasicCegarLoop]: trace histogram [50, 1, 1, 1] [2018-07-25 08:56:10,872 INFO L415 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:10,872 INFO L82 PathProgramCache]: Analyzing trace with hash -105059360, now seen corresponding path program 50 times [2018-07-25 08:56:10,872 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:10,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:11,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:11,053 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:11,053 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-07-25 08:56:11,053 INFO L451 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-07-25 08:56:11,054 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-07-25 08:56:11,055 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 08:56:11,055 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 53 states. [2018-07-25 08:56:11,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:11,088 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-07-25 08:56:11,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-07-25 08:56:11,088 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 53 [2018-07-25 08:56:11,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:11,089 INFO L225 Difference]: With dead ends: 57 [2018-07-25 08:56:11,089 INFO L226 Difference]: Without dead ends: 55 [2018-07-25 08:56:11,090 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 08:56:11,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-07-25 08:56:11,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-07-25 08:56:11,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-07-25 08:56:11,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-07-25 08:56:11,093 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 53 [2018-07-25 08:56:11,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:11,094 INFO L472 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-07-25 08:56:11,094 INFO L473 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-07-25 08:56:11,094 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-07-25 08:56:11,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-07-25 08:56:11,094 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:11,094 INFO L354 BasicCegarLoop]: trace histogram [51, 1, 1, 1] [2018-07-25 08:56:11,095 INFO L415 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:11,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1038125190, now seen corresponding path program 51 times [2018-07-25 08:56:11,095 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:11,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:11,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:11,272 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:11,273 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-07-25 08:56:11,273 INFO L451 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-07-25 08:56:11,274 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-07-25 08:56:11,274 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 08:56:11,275 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 54 states. [2018-07-25 08:56:11,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:11,299 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2018-07-25 08:56:11,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-07-25 08:56:11,299 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 54 [2018-07-25 08:56:11,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:11,300 INFO L225 Difference]: With dead ends: 58 [2018-07-25 08:56:11,300 INFO L226 Difference]: Without dead ends: 56 [2018-07-25 08:56:11,301 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 08:56:11,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-07-25 08:56:11,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-07-25 08:56:11,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-07-25 08:56:11,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2018-07-25 08:56:11,304 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 54 [2018-07-25 08:56:11,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:11,304 INFO L472 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2018-07-25 08:56:11,305 INFO L473 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-07-25 08:56:11,305 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2018-07-25 08:56:11,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-07-25 08:56:11,305 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:11,305 INFO L354 BasicCegarLoop]: trace histogram [52, 1, 1, 1] [2018-07-25 08:56:11,306 INFO L415 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:11,306 INFO L82 PathProgramCache]: Analyzing trace with hash 2117107872, now seen corresponding path program 52 times [2018-07-25 08:56:11,306 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:11,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:11,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:11,493 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:11,493 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-07-25 08:56:11,494 INFO L451 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-07-25 08:56:11,494 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-07-25 08:56:11,495 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 08:56:11,495 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 55 states. [2018-07-25 08:56:11,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:11,524 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-07-25 08:56:11,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-07-25 08:56:11,525 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 55 [2018-07-25 08:56:11,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:11,525 INFO L225 Difference]: With dead ends: 59 [2018-07-25 08:56:11,526 INFO L226 Difference]: Without dead ends: 57 [2018-07-25 08:56:11,527 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 08:56:11,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-07-25 08:56:11,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-07-25 08:56:11,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-07-25 08:56:11,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-07-25 08:56:11,529 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 55 [2018-07-25 08:56:11,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:11,530 INFO L472 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-07-25 08:56:11,530 INFO L473 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-07-25 08:56:11,530 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-07-25 08:56:11,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-07-25 08:56:11,530 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:11,530 INFO L354 BasicCegarLoop]: trace histogram [53, 1, 1, 1] [2018-07-25 08:56:11,531 INFO L415 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:11,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1205832646, now seen corresponding path program 53 times [2018-07-25 08:56:11,531 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:11,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:11,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:11,727 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:11,727 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-25 08:56:11,727 INFO L451 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-25 08:56:11,728 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-25 08:56:11,729 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:56:11,729 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 56 states. [2018-07-25 08:56:11,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:11,768 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2018-07-25 08:56:11,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-07-25 08:56:11,768 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 56 [2018-07-25 08:56:11,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:11,769 INFO L225 Difference]: With dead ends: 60 [2018-07-25 08:56:11,769 INFO L226 Difference]: Without dead ends: 58 [2018-07-25 08:56:11,770 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:56:11,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-07-25 08:56:11,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-07-25 08:56:11,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-07-25 08:56:11,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2018-07-25 08:56:11,773 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 56 [2018-07-25 08:56:11,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:11,773 INFO L472 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2018-07-25 08:56:11,774 INFO L473 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-25 08:56:11,774 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2018-07-25 08:56:11,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-07-25 08:56:11,774 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:11,774 INFO L354 BasicCegarLoop]: trace histogram [54, 1, 1, 1] [2018-07-25 08:56:11,775 INFO L415 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:11,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1273895584, now seen corresponding path program 54 times [2018-07-25 08:56:11,775 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:11,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:11,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:11,984 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:11,984 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-07-25 08:56:11,984 INFO L451 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-07-25 08:56:11,985 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-07-25 08:56:11,986 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 08:56:11,987 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 57 states. [2018-07-25 08:56:12,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:12,025 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-07-25 08:56:12,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-07-25 08:56:12,025 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 57 [2018-07-25 08:56:12,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:12,026 INFO L225 Difference]: With dead ends: 61 [2018-07-25 08:56:12,026 INFO L226 Difference]: Without dead ends: 59 [2018-07-25 08:56:12,028 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 08:56:12,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-07-25 08:56:12,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-07-25 08:56:12,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-07-25 08:56:12,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-07-25 08:56:12,031 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 57 [2018-07-25 08:56:12,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:12,032 INFO L472 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-07-25 08:56:12,032 INFO L473 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-07-25 08:56:12,032 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-07-25 08:56:12,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-07-25 08:56:12,033 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:12,033 INFO L354 BasicCegarLoop]: trace histogram [55, 1, 1, 1] [2018-07-25 08:56:12,033 INFO L415 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:12,034 INFO L82 PathProgramCache]: Analyzing trace with hash -836059386, now seen corresponding path program 55 times [2018-07-25 08:56:12,034 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:12,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:12,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:12,292 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:12,293 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-07-25 08:56:12,293 INFO L451 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-07-25 08:56:12,294 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-07-25 08:56:12,295 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:56:12,295 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 58 states. [2018-07-25 08:56:12,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:12,325 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2018-07-25 08:56:12,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-07-25 08:56:12,325 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 58 [2018-07-25 08:56:12,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:12,326 INFO L225 Difference]: With dead ends: 62 [2018-07-25 08:56:12,326 INFO L226 Difference]: Without dead ends: 60 [2018-07-25 08:56:12,327 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:56:12,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-07-25 08:56:12,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-07-25 08:56:12,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-07-25 08:56:12,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2018-07-25 08:56:12,331 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 58 [2018-07-25 08:56:12,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:12,331 INFO L472 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2018-07-25 08:56:12,331 INFO L473 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-07-25 08:56:12,331 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2018-07-25 08:56:12,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-07-25 08:56:12,332 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:12,332 INFO L354 BasicCegarLoop]: trace histogram [56, 1, 1, 1] [2018-07-25 08:56:12,333 INFO L415 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:12,333 INFO L82 PathProgramCache]: Analyzing trace with hash -148039136, now seen corresponding path program 56 times [2018-07-25 08:56:12,333 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:12,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:12,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:12,605 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:12,606 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-07-25 08:56:12,606 INFO L451 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-07-25 08:56:12,607 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-07-25 08:56:12,607 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 08:56:12,608 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 59 states. [2018-07-25 08:56:12,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:12,650 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-07-25 08:56:12,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-07-25 08:56:12,651 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 59 [2018-07-25 08:56:12,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:12,651 INFO L225 Difference]: With dead ends: 63 [2018-07-25 08:56:12,651 INFO L226 Difference]: Without dead ends: 61 [2018-07-25 08:56:12,653 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 08:56:12,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-07-25 08:56:12,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-07-25 08:56:12,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-07-25 08:56:12,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-07-25 08:56:12,656 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 59 [2018-07-25 08:56:12,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:12,656 INFO L472 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-07-25 08:56:12,656 INFO L473 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-07-25 08:56:12,656 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-07-25 08:56:12,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-07-25 08:56:12,657 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:12,657 INFO L354 BasicCegarLoop]: trace histogram [57, 1, 1, 1] [2018-07-25 08:56:12,657 INFO L415 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:12,657 INFO L82 PathProgramCache]: Analyzing trace with hash -294247866, now seen corresponding path program 57 times [2018-07-25 08:56:12,658 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:12,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:12,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:12,873 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:12,873 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-25 08:56:12,873 INFO L451 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-25 08:56:12,874 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-25 08:56:12,875 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 08:56:12,875 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 60 states. [2018-07-25 08:56:12,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:12,918 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2018-07-25 08:56:12,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-07-25 08:56:12,918 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 60 [2018-07-25 08:56:12,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:12,919 INFO L225 Difference]: With dead ends: 64 [2018-07-25 08:56:12,919 INFO L226 Difference]: Without dead ends: 62 [2018-07-25 08:56:12,920 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 08:56:12,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-07-25 08:56:12,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-07-25 08:56:12,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-07-25 08:56:12,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2018-07-25 08:56:12,923 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 60 [2018-07-25 08:56:12,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:12,923 INFO L472 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2018-07-25 08:56:12,923 INFO L473 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-25 08:56:12,924 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2018-07-25 08:56:12,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-07-25 08:56:12,924 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:12,924 INFO L354 BasicCegarLoop]: trace histogram [58, 1, 1, 1] [2018-07-25 08:56:12,925 INFO L415 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:12,925 INFO L82 PathProgramCache]: Analyzing trace with hash -531751200, now seen corresponding path program 58 times [2018-07-25 08:56:12,925 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:12,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:13,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:13,174 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:13,175 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-07-25 08:56:13,175 INFO L451 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-07-25 08:56:13,176 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-07-25 08:56:13,176 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 08:56:13,177 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 61 states. [2018-07-25 08:56:13,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:13,214 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-07-25 08:56:13,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-07-25 08:56:13,214 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 61 [2018-07-25 08:56:13,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:13,215 INFO L225 Difference]: With dead ends: 65 [2018-07-25 08:56:13,215 INFO L226 Difference]: Without dead ends: 63 [2018-07-25 08:56:13,216 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 08:56:13,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-07-25 08:56:13,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-07-25 08:56:13,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-07-25 08:56:13,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-07-25 08:56:13,219 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 61 [2018-07-25 08:56:13,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:13,219 INFO L472 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-07-25 08:56:13,219 INFO L473 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-07-25 08:56:13,219 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-07-25 08:56:13,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-07-25 08:56:13,220 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:13,220 INFO L354 BasicCegarLoop]: trace histogram [59, 1, 1, 1] [2018-07-25 08:56:13,220 INFO L415 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:13,220 INFO L82 PathProgramCache]: Analyzing trace with hash 695580038, now seen corresponding path program 59 times [2018-07-25 08:56:13,221 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:13,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:13,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:13,472 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:13,472 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-07-25 08:56:13,472 INFO L451 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-07-25 08:56:13,473 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-07-25 08:56:13,474 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:56:13,474 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 62 states. [2018-07-25 08:56:13,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:13,515 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2018-07-25 08:56:13,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-07-25 08:56:13,516 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 62 [2018-07-25 08:56:13,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:13,516 INFO L225 Difference]: With dead ends: 66 [2018-07-25 08:56:13,517 INFO L226 Difference]: Without dead ends: 64 [2018-07-25 08:56:13,518 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:56:13,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-07-25 08:56:13,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-07-25 08:56:13,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-07-25 08:56:13,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2018-07-25 08:56:13,521 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 62 [2018-07-25 08:56:13,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:13,521 INFO L472 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2018-07-25 08:56:13,521 INFO L473 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-07-25 08:56:13,521 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2018-07-25 08:56:13,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-07-25 08:56:13,522 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:13,522 INFO L354 BasicCegarLoop]: trace histogram [60, 1, 1, 1] [2018-07-25 08:56:13,522 INFO L415 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:13,523 INFO L82 PathProgramCache]: Analyzing trace with hash 88142752, now seen corresponding path program 60 times [2018-07-25 08:56:13,523 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:13,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:13,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:13,751 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:13,751 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-07-25 08:56:13,751 INFO L451 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-07-25 08:56:13,752 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-07-25 08:56:13,753 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 08:56:13,753 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 63 states. [2018-07-25 08:56:13,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:13,792 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-07-25 08:56:13,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-07-25 08:56:13,792 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 63 [2018-07-25 08:56:13,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:13,793 INFO L225 Difference]: With dead ends: 67 [2018-07-25 08:56:13,793 INFO L226 Difference]: Without dead ends: 65 [2018-07-25 08:56:13,795 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 08:56:13,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-07-25 08:56:13,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-07-25 08:56:13,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-07-25 08:56:13,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-07-25 08:56:13,798 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 63 [2018-07-25 08:56:13,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:13,798 INFO L472 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-07-25 08:56:13,798 INFO L473 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-07-25 08:56:13,798 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-07-25 08:56:13,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-07-25 08:56:13,799 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:13,799 INFO L354 BasicCegarLoop]: trace histogram [61, 1, 1, 1] [2018-07-25 08:56:13,799 INFO L415 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:13,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1562543930, now seen corresponding path program 61 times [2018-07-25 08:56:13,800 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:13,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:14,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:14,024 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:14,024 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-25 08:56:14,025 INFO L451 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-25 08:56:14,025 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-25 08:56:14,026 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:56:14,027 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 64 states. [2018-07-25 08:56:14,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:14,070 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2018-07-25 08:56:14,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-07-25 08:56:14,070 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 64 [2018-07-25 08:56:14,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:14,071 INFO L225 Difference]: With dead ends: 68 [2018-07-25 08:56:14,071 INFO L226 Difference]: Without dead ends: 66 [2018-07-25 08:56:14,072 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:56:14,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-07-25 08:56:14,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-07-25 08:56:14,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-07-25 08:56:14,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2018-07-25 08:56:14,075 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 64 [2018-07-25 08:56:14,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:14,075 INFO L472 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2018-07-25 08:56:14,075 INFO L473 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-25 08:56:14,076 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2018-07-25 08:56:14,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-07-25 08:56:14,076 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:14,076 INFO L354 BasicCegarLoop]: trace histogram [62, 1, 1, 1] [2018-07-25 08:56:14,077 INFO L415 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:14,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1194223520, now seen corresponding path program 62 times [2018-07-25 08:56:14,077 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:14,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:14,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:14,291 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:14,291 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-07-25 08:56:14,291 INFO L451 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-07-25 08:56:14,292 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-07-25 08:56:14,293 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:56:14,293 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 65 states. [2018-07-25 08:56:14,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:14,338 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-07-25 08:56:14,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-07-25 08:56:14,338 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 65 [2018-07-25 08:56:14,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:14,339 INFO L225 Difference]: With dead ends: 69 [2018-07-25 08:56:14,339 INFO L226 Difference]: Without dead ends: 67 [2018-07-25 08:56:14,340 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:56:14,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-07-25 08:56:14,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-07-25 08:56:14,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-07-25 08:56:14,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-07-25 08:56:14,343 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 65 [2018-07-25 08:56:14,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:14,343 INFO L472 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-07-25 08:56:14,343 INFO L473 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-07-25 08:56:14,343 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-07-25 08:56:14,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-07-25 08:56:14,344 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:14,344 INFO L354 BasicCegarLoop]: trace histogram [63, 1, 1, 1] [2018-07-25 08:56:14,344 INFO L415 AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:14,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1633774598, now seen corresponding path program 63 times [2018-07-25 08:56:14,345 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:14,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:14,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:14,564 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:14,564 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-07-25 08:56:14,564 INFO L451 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-07-25 08:56:14,567 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-07-25 08:56:14,568 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:56:14,568 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 66 states. [2018-07-25 08:56:14,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:14,603 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2018-07-25 08:56:14,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-07-25 08:56:14,603 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 66 [2018-07-25 08:56:14,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:14,604 INFO L225 Difference]: With dead ends: 70 [2018-07-25 08:56:14,604 INFO L226 Difference]: Without dead ends: 68 [2018-07-25 08:56:14,605 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:56:14,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-07-25 08:56:14,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-07-25 08:56:14,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-07-25 08:56:14,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2018-07-25 08:56:14,611 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 66 [2018-07-25 08:56:14,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:14,611 INFO L472 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2018-07-25 08:56:14,611 INFO L473 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-07-25 08:56:14,611 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2018-07-25 08:56:14,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-07-25 08:56:14,612 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:14,612 INFO L354 BasicCegarLoop]: trace histogram [64, 1, 1, 1] [2018-07-25 08:56:14,612 INFO L415 AbstractCegarLoop]: === Iteration 65 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:14,613 INFO L82 PathProgramCache]: Analyzing trace with hash -892596960, now seen corresponding path program 64 times [2018-07-25 08:56:14,613 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:14,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:14,875 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:14,875 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:14,876 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-07-25 08:56:14,876 INFO L451 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-07-25 08:56:14,877 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-07-25 08:56:14,878 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 08:56:14,878 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 67 states. [2018-07-25 08:56:14,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:14,927 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-07-25 08:56:14,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-07-25 08:56:14,928 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 67 [2018-07-25 08:56:14,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:14,928 INFO L225 Difference]: With dead ends: 71 [2018-07-25 08:56:14,929 INFO L226 Difference]: Without dead ends: 69 [2018-07-25 08:56:14,929 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 08:56:14,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-07-25 08:56:14,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-07-25 08:56:14,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-07-25 08:56:14,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-07-25 08:56:14,933 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 67 [2018-07-25 08:56:14,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:14,934 INFO L472 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-07-25 08:56:14,934 INFO L473 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-07-25 08:56:14,934 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-07-25 08:56:14,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-07-25 08:56:14,934 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:14,935 INFO L354 BasicCegarLoop]: trace histogram [65, 1, 1, 1] [2018-07-25 08:56:14,935 INFO L415 AbstractCegarLoop]: === Iteration 66 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:14,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1900703930, now seen corresponding path program 65 times [2018-07-25 08:56:14,936 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:14,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:15,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:15,257 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:15,257 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-25 08:56:15,257 INFO L451 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-25 08:56:15,258 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-25 08:56:15,258 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:56:15,259 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 68 states. [2018-07-25 08:56:15,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:15,309 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2018-07-25 08:56:15,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-07-25 08:56:15,309 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 68 [2018-07-25 08:56:15,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:15,310 INFO L225 Difference]: With dead ends: 72 [2018-07-25 08:56:15,310 INFO L226 Difference]: Without dead ends: 70 [2018-07-25 08:56:15,310 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:56:15,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-07-25 08:56:15,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-07-25 08:56:15,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-07-25 08:56:15,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2018-07-25 08:56:15,314 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 68 [2018-07-25 08:56:15,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:15,314 INFO L472 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2018-07-25 08:56:15,314 INFO L473 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-25 08:56:15,314 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2018-07-25 08:56:15,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-07-25 08:56:15,315 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:15,315 INFO L354 BasicCegarLoop]: trace histogram [66, 1, 1, 1] [2018-07-25 08:56:15,315 INFO L415 AbstractCegarLoop]: === Iteration 67 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:15,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1207718368, now seen corresponding path program 66 times [2018-07-25 08:56:15,316 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:15,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:15,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:15,542 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:15,543 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-07-25 08:56:15,543 INFO L451 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-07-25 08:56:15,544 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-07-25 08:56:15,544 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 08:56:15,545 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 69 states. [2018-07-25 08:56:15,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:15,585 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-07-25 08:56:15,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-07-25 08:56:15,585 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 69 [2018-07-25 08:56:15,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:15,586 INFO L225 Difference]: With dead ends: 73 [2018-07-25 08:56:15,586 INFO L226 Difference]: Without dead ends: 71 [2018-07-25 08:56:15,587 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 08:56:15,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-07-25 08:56:15,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-07-25 08:56:15,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-07-25 08:56:15,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-07-25 08:56:15,590 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 69 [2018-07-25 08:56:15,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:15,591 INFO L472 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-07-25 08:56:15,591 INFO L473 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-07-25 08:56:15,591 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-07-25 08:56:15,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-07-25 08:56:15,591 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:15,592 INFO L354 BasicCegarLoop]: trace histogram [67, 1, 1, 1] [2018-07-25 08:56:15,592 INFO L415 AbstractCegarLoop]: === Iteration 68 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:15,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1215438202, now seen corresponding path program 67 times [2018-07-25 08:56:15,592 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:15,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:15,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:15,838 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:15,838 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-07-25 08:56:15,839 INFO L451 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-07-25 08:56:15,840 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-07-25 08:56:15,840 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:56:15,840 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 70 states. [2018-07-25 08:56:15,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:15,881 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2018-07-25 08:56:15,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-07-25 08:56:15,881 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 70 [2018-07-25 08:56:15,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:15,882 INFO L225 Difference]: With dead ends: 74 [2018-07-25 08:56:15,882 INFO L226 Difference]: Without dead ends: 72 [2018-07-25 08:56:15,883 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:56:15,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-07-25 08:56:15,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-07-25 08:56:15,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-07-25 08:56:15,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2018-07-25 08:56:15,886 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 70 [2018-07-25 08:56:15,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:15,887 INFO L472 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2018-07-25 08:56:15,887 INFO L473 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-07-25 08:56:15,887 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2018-07-25 08:56:15,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-07-25 08:56:15,888 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:15,888 INFO L354 BasicCegarLoop]: trace histogram [68, 1, 1, 1] [2018-07-25 08:56:15,888 INFO L415 AbstractCegarLoop]: === Iteration 69 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:15,888 INFO L82 PathProgramCache]: Analyzing trace with hash 976119456, now seen corresponding path program 68 times [2018-07-25 08:56:15,888 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:15,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:16,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:16,130 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:16,130 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-07-25 08:56:16,131 INFO L451 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-07-25 08:56:16,131 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-07-25 08:56:16,132 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 08:56:16,132 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 71 states. [2018-07-25 08:56:16,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:16,193 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-07-25 08:56:16,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-07-25 08:56:16,193 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 71 [2018-07-25 08:56:16,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:16,194 INFO L225 Difference]: With dead ends: 75 [2018-07-25 08:56:16,194 INFO L226 Difference]: Without dead ends: 73 [2018-07-25 08:56:16,195 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 08:56:16,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-07-25 08:56:16,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-07-25 08:56:16,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-07-25 08:56:16,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-07-25 08:56:16,198 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 71 [2018-07-25 08:56:16,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:16,199 INFO L472 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-07-25 08:56:16,199 INFO L473 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-07-25 08:56:16,199 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-07-25 08:56:16,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-07-25 08:56:16,199 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:16,200 INFO L354 BasicCegarLoop]: trace histogram [69, 1, 1, 1] [2018-07-25 08:56:16,200 INFO L415 AbstractCegarLoop]: === Iteration 70 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:16,200 INFO L82 PathProgramCache]: Analyzing trace with hash 194930118, now seen corresponding path program 69 times [2018-07-25 08:56:16,200 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:16,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:16,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:16,449 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:16,449 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-25 08:56:16,449 INFO L451 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-25 08:56:16,450 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-25 08:56:16,451 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:56:16,451 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 72 states. [2018-07-25 08:56:16,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:16,509 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2018-07-25 08:56:16,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-07-25 08:56:16,509 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 72 [2018-07-25 08:56:16,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:16,509 INFO L225 Difference]: With dead ends: 76 [2018-07-25 08:56:16,510 INFO L226 Difference]: Without dead ends: 74 [2018-07-25 08:56:16,510 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:56:16,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-07-25 08:56:16,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2018-07-25 08:56:16,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-07-25 08:56:16,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2018-07-25 08:56:16,514 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 72 [2018-07-25 08:56:16,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:16,514 INFO L472 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2018-07-25 08:56:16,514 INFO L473 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-25 08:56:16,514 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2018-07-25 08:56:16,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-07-25 08:56:16,515 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:16,515 INFO L354 BasicCegarLoop]: trace histogram [70, 1, 1, 1] [2018-07-25 08:56:16,515 INFO L415 AbstractCegarLoop]: === Iteration 71 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:16,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1747864416, now seen corresponding path program 70 times [2018-07-25 08:56:16,516 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:16,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:16,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:16,777 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:16,777 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-07-25 08:56:16,778 INFO L451 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-07-25 08:56:16,782 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-07-25 08:56:16,783 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 08:56:16,783 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand 73 states. [2018-07-25 08:56:16,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:16,845 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-07-25 08:56:16,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-07-25 08:56:16,846 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 73 [2018-07-25 08:56:16,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:16,847 INFO L225 Difference]: With dead ends: 77 [2018-07-25 08:56:16,847 INFO L226 Difference]: Without dead ends: 75 [2018-07-25 08:56:16,848 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 08:56:16,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-07-25 08:56:16,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-07-25 08:56:16,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-07-25 08:56:16,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-07-25 08:56:16,852 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 73 [2018-07-25 08:56:16,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:16,852 INFO L472 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-07-25 08:56:16,852 INFO L473 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-07-25 08:56:16,852 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-07-25 08:56:16,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-07-25 08:56:16,853 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:16,853 INFO L354 BasicCegarLoop]: trace histogram [71, 1, 1, 1] [2018-07-25 08:56:16,853 INFO L415 AbstractCegarLoop]: === Iteration 72 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:16,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1650779898, now seen corresponding path program 71 times [2018-07-25 08:56:16,854 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:16,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:17,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:17,105 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:17,105 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-07-25 08:56:17,105 INFO L451 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-07-25 08:56:17,109 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-07-25 08:56:17,109 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:56:17,109 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 74 states. [2018-07-25 08:56:17,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:17,169 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2018-07-25 08:56:17,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-07-25 08:56:17,169 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 74 [2018-07-25 08:56:17,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:17,170 INFO L225 Difference]: With dead ends: 78 [2018-07-25 08:56:17,170 INFO L226 Difference]: Without dead ends: 76 [2018-07-25 08:56:17,171 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:56:17,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-07-25 08:56:17,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-07-25 08:56:17,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-07-25 08:56:17,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2018-07-25 08:56:17,174 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 74 [2018-07-25 08:56:17,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:17,175 INFO L472 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2018-07-25 08:56:17,175 INFO L473 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-07-25 08:56:17,175 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2018-07-25 08:56:17,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-07-25 08:56:17,175 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:17,176 INFO L354 BasicCegarLoop]: trace histogram [72, 1, 1, 1] [2018-07-25 08:56:17,176 INFO L415 AbstractCegarLoop]: === Iteration 73 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:17,176 INFO L82 PathProgramCache]: Analyzing trace with hash 365428768, now seen corresponding path program 72 times [2018-07-25 08:56:17,176 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:17,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:17,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:17,432 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:17,432 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2018-07-25 08:56:17,432 INFO L451 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-07-25 08:56:17,433 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-07-25 08:56:17,434 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 08:56:17,434 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 75 states. [2018-07-25 08:56:17,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:17,514 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-07-25 08:56:17,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-07-25 08:56:17,515 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 75 [2018-07-25 08:56:17,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:17,516 INFO L225 Difference]: With dead ends: 79 [2018-07-25 08:56:17,516 INFO L226 Difference]: Without dead ends: 77 [2018-07-25 08:56:17,517 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 08:56:17,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-07-25 08:56:17,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-07-25 08:56:17,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-07-25 08:56:17,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-07-25 08:56:17,520 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 75 [2018-07-25 08:56:17,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:17,520 INFO L472 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-07-25 08:56:17,520 INFO L473 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-07-25 08:56:17,520 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-07-25 08:56:17,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-07-25 08:56:17,521 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:17,521 INFO L354 BasicCegarLoop]: trace histogram [73, 1, 1, 1] [2018-07-25 08:56:17,522 INFO L415 AbstractCegarLoop]: === Iteration 74 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:17,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1556612026, now seen corresponding path program 73 times [2018-07-25 08:56:17,522 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:17,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:17,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:17,802 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:17,802 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-25 08:56:17,802 INFO L451 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-25 08:56:17,803 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-25 08:56:17,804 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:56:17,804 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 76 states. [2018-07-25 08:56:17,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:17,877 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2018-07-25 08:56:17,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-07-25 08:56:17,878 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 76 [2018-07-25 08:56:17,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:17,879 INFO L225 Difference]: With dead ends: 80 [2018-07-25 08:56:17,879 INFO L226 Difference]: Without dead ends: 78 [2018-07-25 08:56:17,880 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:56:17,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-07-25 08:56:17,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2018-07-25 08:56:17,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-07-25 08:56:17,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2018-07-25 08:56:17,883 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 76 [2018-07-25 08:56:17,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:17,883 INFO L472 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2018-07-25 08:56:17,884 INFO L473 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-25 08:56:17,884 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2018-07-25 08:56:17,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-07-25 08:56:17,884 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:17,885 INFO L354 BasicCegarLoop]: trace histogram [74, 1, 1, 1] [2018-07-25 08:56:17,885 INFO L415 AbstractCegarLoop]: === Iteration 75 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:17,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1010334496, now seen corresponding path program 74 times [2018-07-25 08:56:17,885 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:17,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:18,153 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:18,154 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:18,154 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-07-25 08:56:18,154 INFO L451 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-07-25 08:56:18,155 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-07-25 08:56:18,156 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 08:56:18,156 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand 77 states. [2018-07-25 08:56:18,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:18,225 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-07-25 08:56:18,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-07-25 08:56:18,225 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 77 [2018-07-25 08:56:18,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:18,226 INFO L225 Difference]: With dead ends: 81 [2018-07-25 08:56:18,226 INFO L226 Difference]: Without dead ends: 79 [2018-07-25 08:56:18,227 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 08:56:18,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-07-25 08:56:18,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-07-25 08:56:18,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-07-25 08:56:18,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-07-25 08:56:18,230 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 77 [2018-07-25 08:56:18,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:18,231 INFO L472 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-07-25 08:56:18,231 INFO L473 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-07-25 08:56:18,231 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-07-25 08:56:18,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-07-25 08:56:18,232 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:18,232 INFO L354 BasicCegarLoop]: trace histogram [75, 1, 1, 1] [2018-07-25 08:56:18,232 INFO L415 AbstractCegarLoop]: === Iteration 76 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:18,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1255600250, now seen corresponding path program 75 times [2018-07-25 08:56:18,232 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:18,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:18,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:18,493 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:18,493 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-07-25 08:56:18,493 INFO L451 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-07-25 08:56:18,494 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-07-25 08:56:18,495 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 08:56:18,495 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 78 states. [2018-07-25 08:56:18,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:18,563 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2018-07-25 08:56:18,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-07-25 08:56:18,564 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 78 [2018-07-25 08:56:18,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:18,565 INFO L225 Difference]: With dead ends: 82 [2018-07-25 08:56:18,565 INFO L226 Difference]: Without dead ends: 80 [2018-07-25 08:56:18,566 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 08:56:18,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-07-25 08:56:18,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2018-07-25 08:56:18,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-07-25 08:56:18,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2018-07-25 08:56:18,570 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 78 [2018-07-25 08:56:18,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:18,570 INFO L472 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2018-07-25 08:56:18,570 INFO L473 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-07-25 08:56:18,570 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2018-07-25 08:56:18,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-07-25 08:56:18,571 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:18,571 INFO L354 BasicCegarLoop]: trace histogram [76, 1, 1, 1] [2018-07-25 08:56:18,571 INFO L415 AbstractCegarLoop]: === Iteration 77 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:18,571 INFO L82 PathProgramCache]: Analyzing trace with hash -268904032, now seen corresponding path program 76 times [2018-07-25 08:56:18,571 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:18,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:18,827 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:18,827 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:18,827 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2018-07-25 08:56:18,828 INFO L451 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-07-25 08:56:18,829 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-07-25 08:56:18,829 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 08:56:18,829 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 79 states. [2018-07-25 08:56:18,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:18,885 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-07-25 08:56:18,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-07-25 08:56:18,885 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 79 [2018-07-25 08:56:18,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:18,887 INFO L225 Difference]: With dead ends: 83 [2018-07-25 08:56:18,887 INFO L226 Difference]: Without dead ends: 81 [2018-07-25 08:56:18,888 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 08:56:18,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-07-25 08:56:18,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-07-25 08:56:18,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-07-25 08:56:18,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-07-25 08:56:18,891 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 79 [2018-07-25 08:56:18,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:18,892 INFO L472 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-07-25 08:56:18,892 INFO L473 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-07-25 08:56:18,892 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-07-25 08:56:18,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-07-25 08:56:18,893 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:18,893 INFO L354 BasicCegarLoop]: trace histogram [77, 1, 1, 1] [2018-07-25 08:56:18,894 INFO L415 AbstractCegarLoop]: === Iteration 78 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:18,894 INFO L82 PathProgramCache]: Analyzing trace with hash 253907654, now seen corresponding path program 77 times [2018-07-25 08:56:18,894 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:18,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:19,153 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:19,153 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:19,153 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-25 08:56:19,154 INFO L451 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-25 08:56:19,155 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-25 08:56:19,155 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:56:19,156 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 80 states. [2018-07-25 08:56:19,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:19,196 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2018-07-25 08:56:19,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-07-25 08:56:19,196 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 80 [2018-07-25 08:56:19,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:19,197 INFO L225 Difference]: With dead ends: 84 [2018-07-25 08:56:19,197 INFO L226 Difference]: Without dead ends: 82 [2018-07-25 08:56:19,198 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:56:19,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-07-25 08:56:19,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2018-07-25 08:56:19,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-07-25 08:56:19,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2018-07-25 08:56:19,201 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 80 [2018-07-25 08:56:19,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:19,201 INFO L472 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2018-07-25 08:56:19,201 INFO L473 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-25 08:56:19,202 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2018-07-25 08:56:19,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-07-25 08:56:19,202 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:19,202 INFO L354 BasicCegarLoop]: trace histogram [78, 1, 1, 1] [2018-07-25 08:56:19,203 INFO L415 AbstractCegarLoop]: === Iteration 79 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:19,203 INFO L82 PathProgramCache]: Analyzing trace with hash -718799264, now seen corresponding path program 78 times [2018-07-25 08:56:19,203 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:19,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:19,478 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:19,478 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:19,478 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-07-25 08:56:19,479 INFO L451 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-07-25 08:56:19,480 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-07-25 08:56:19,480 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 08:56:19,481 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand 81 states. [2018-07-25 08:56:19,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:19,539 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-07-25 08:56:19,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-07-25 08:56:19,539 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 81 [2018-07-25 08:56:19,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:19,540 INFO L225 Difference]: With dead ends: 85 [2018-07-25 08:56:19,540 INFO L226 Difference]: Without dead ends: 83 [2018-07-25 08:56:19,541 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 08:56:19,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-07-25 08:56:19,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-07-25 08:56:19,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-07-25 08:56:19,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-07-25 08:56:19,545 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 81 [2018-07-25 08:56:19,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:19,545 INFO L472 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-07-25 08:56:19,545 INFO L473 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-07-25 08:56:19,545 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-07-25 08:56:19,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-07-25 08:56:19,546 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:19,546 INFO L354 BasicCegarLoop]: trace histogram [79, 1, 1, 1] [2018-07-25 08:56:19,546 INFO L415 AbstractCegarLoop]: === Iteration 80 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:19,547 INFO L82 PathProgramCache]: Analyzing trace with hash -807942650, now seen corresponding path program 79 times [2018-07-25 08:56:19,547 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:19,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:19,880 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:19,880 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:19,880 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-07-25 08:56:19,881 INFO L451 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-07-25 08:56:19,882 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-07-25 08:56:19,883 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 08:56:19,883 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 82 states. [2018-07-25 08:56:19,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:19,972 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2018-07-25 08:56:19,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-07-25 08:56:19,973 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 82 [2018-07-25 08:56:19,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:19,974 INFO L225 Difference]: With dead ends: 86 [2018-07-25 08:56:19,974 INFO L226 Difference]: Without dead ends: 84 [2018-07-25 08:56:19,975 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 08:56:19,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-07-25 08:56:19,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2018-07-25 08:56:19,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-07-25 08:56:19,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2018-07-25 08:56:19,980 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 82 [2018-07-25 08:56:19,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:19,980 INFO L472 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2018-07-25 08:56:19,980 INFO L473 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-07-25 08:56:19,981 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2018-07-25 08:56:19,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-07-25 08:56:19,981 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:19,981 INFO L354 BasicCegarLoop]: trace histogram [80, 1, 1, 1] [2018-07-25 08:56:19,982 INFO L415 AbstractCegarLoop]: === Iteration 81 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:19,982 INFO L82 PathProgramCache]: Analyzing trace with hash 723579680, now seen corresponding path program 80 times [2018-07-25 08:56:19,982 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:20,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:20,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:20,378 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:20,378 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2018-07-25 08:56:20,379 INFO L451 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-07-25 08:56:20,379 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-07-25 08:56:20,380 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 08:56:20,380 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand 83 states. [2018-07-25 08:56:20,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:20,439 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-07-25 08:56:20,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-07-25 08:56:20,439 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 83 [2018-07-25 08:56:20,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:20,440 INFO L225 Difference]: With dead ends: 87 [2018-07-25 08:56:20,440 INFO L226 Difference]: Without dead ends: 85 [2018-07-25 08:56:20,441 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 08:56:20,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-07-25 08:56:20,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-07-25 08:56:20,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-07-25 08:56:20,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2018-07-25 08:56:20,444 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 83 [2018-07-25 08:56:20,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:20,445 INFO L472 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2018-07-25 08:56:20,445 INFO L473 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-07-25 08:56:20,445 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2018-07-25 08:56:20,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-07-25 08:56:20,445 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:20,446 INFO L354 BasicCegarLoop]: trace histogram [81, 1, 1, 1] [2018-07-25 08:56:20,446 INFO L415 AbstractCegarLoop]: === Iteration 82 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:20,446 INFO L82 PathProgramCache]: Analyzing trace with hash 956131654, now seen corresponding path program 81 times [2018-07-25 08:56:20,446 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:20,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:20,715 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:20,715 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:20,715 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-07-25 08:56:20,715 INFO L451 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-07-25 08:56:20,717 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-07-25 08:56:20,717 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 08:56:20,717 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 84 states. [2018-07-25 08:56:20,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:20,769 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2018-07-25 08:56:20,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-07-25 08:56:20,769 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 84 [2018-07-25 08:56:20,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:20,770 INFO L225 Difference]: With dead ends: 88 [2018-07-25 08:56:20,770 INFO L226 Difference]: Without dead ends: 86 [2018-07-25 08:56:20,771 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 08:56:20,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-07-25 08:56:20,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-07-25 08:56:20,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-07-25 08:56:20,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2018-07-25 08:56:20,774 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 84 [2018-07-25 08:56:20,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:20,775 INFO L472 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2018-07-25 08:56:20,775 INFO L473 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-07-25 08:56:20,775 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2018-07-25 08:56:20,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-07-25 08:56:20,776 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:20,776 INFO L354 BasicCegarLoop]: trace histogram [82, 1, 1, 1] [2018-07-25 08:56:20,776 INFO L415 AbstractCegarLoop]: === Iteration 83 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:20,776 INFO L82 PathProgramCache]: Analyzing trace with hash -424691744, now seen corresponding path program 82 times [2018-07-25 08:56:20,776 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:20,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:21,028 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:21,028 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:21,028 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2018-07-25 08:56:21,029 INFO L451 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-07-25 08:56:21,030 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-07-25 08:56:21,030 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 08:56:21,030 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 85 states. [2018-07-25 08:56:21,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:21,113 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-07-25 08:56:21,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-07-25 08:56:21,113 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 85 [2018-07-25 08:56:21,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:21,114 INFO L225 Difference]: With dead ends: 89 [2018-07-25 08:56:21,114 INFO L226 Difference]: Without dead ends: 87 [2018-07-25 08:56:21,115 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 08:56:21,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-07-25 08:56:21,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-07-25 08:56:21,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-07-25 08:56:21,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-07-25 08:56:21,118 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 85 [2018-07-25 08:56:21,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:21,119 INFO L472 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-07-25 08:56:21,119 INFO L473 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-07-25 08:56:21,119 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-07-25 08:56:21,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-07-25 08:56:21,120 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:21,120 INFO L354 BasicCegarLoop]: trace histogram [83, 1, 1, 1] [2018-07-25 08:56:21,120 INFO L415 AbstractCegarLoop]: === Iteration 84 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:21,120 INFO L82 PathProgramCache]: Analyzing trace with hash -280544122, now seen corresponding path program 83 times [2018-07-25 08:56:21,120 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:21,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:21,392 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:21,393 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:21,393 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-07-25 08:56:21,393 INFO L451 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-07-25 08:56:21,394 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-07-25 08:56:21,394 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:56:21,395 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 86 states. [2018-07-25 08:56:21,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:21,444 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2018-07-25 08:56:21,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-07-25 08:56:21,444 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 86 [2018-07-25 08:56:21,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:21,445 INFO L225 Difference]: With dead ends: 90 [2018-07-25 08:56:21,445 INFO L226 Difference]: Without dead ends: 88 [2018-07-25 08:56:21,446 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:56:21,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-07-25 08:56:21,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2018-07-25 08:56:21,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-07-25 08:56:21,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2018-07-25 08:56:21,449 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 86 [2018-07-25 08:56:21,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:21,449 INFO L472 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2018-07-25 08:56:21,449 INFO L473 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-07-25 08:56:21,449 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2018-07-25 08:56:21,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-07-25 08:56:21,450 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:21,450 INFO L354 BasicCegarLoop]: trace histogram [84, 1, 1, 1] [2018-07-25 08:56:21,450 INFO L415 AbstractCegarLoop]: === Iteration 85 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:21,450 INFO L82 PathProgramCache]: Analyzing trace with hash -106935136, now seen corresponding path program 84 times [2018-07-25 08:56:21,450 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:21,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:21,728 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:21,728 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:21,729 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2018-07-25 08:56:21,729 INFO L451 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-07-25 08:56:21,730 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-07-25 08:56:21,730 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 08:56:21,731 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand 87 states. [2018-07-25 08:56:21,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:21,825 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-07-25 08:56:21,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-07-25 08:56:21,825 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 87 [2018-07-25 08:56:21,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:21,826 INFO L225 Difference]: With dead ends: 91 [2018-07-25 08:56:21,826 INFO L226 Difference]: Without dead ends: 89 [2018-07-25 08:56:21,827 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 08:56:21,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-07-25 08:56:21,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-07-25 08:56:21,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-07-25 08:56:21,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-07-25 08:56:21,830 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 87 [2018-07-25 08:56:21,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:21,830 INFO L472 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-07-25 08:56:21,830 INFO L473 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-07-25 08:56:21,831 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-07-25 08:56:21,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-07-25 08:56:21,831 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:21,832 INFO L354 BasicCegarLoop]: trace histogram [85, 1, 1, 1] [2018-07-25 08:56:21,832 INFO L415 AbstractCegarLoop]: === Iteration 86 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:21,832 INFO L82 PathProgramCache]: Analyzing trace with hash 979976134, now seen corresponding path program 85 times [2018-07-25 08:56:21,832 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:21,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:22,133 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:22,133 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:22,134 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-07-25 08:56:22,134 INFO L451 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-07-25 08:56:22,135 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-07-25 08:56:22,135 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:56:22,136 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 88 states. [2018-07-25 08:56:22,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:22,188 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2018-07-25 08:56:22,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-07-25 08:56:22,188 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 88 [2018-07-25 08:56:22,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:22,189 INFO L225 Difference]: With dead ends: 92 [2018-07-25 08:56:22,189 INFO L226 Difference]: Without dead ends: 90 [2018-07-25 08:56:22,190 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:56:22,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-07-25 08:56:22,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2018-07-25 08:56:22,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-07-25 08:56:22,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2018-07-25 08:56:22,193 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 88 [2018-07-25 08:56:22,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:22,194 INFO L472 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2018-07-25 08:56:22,194 INFO L473 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-07-25 08:56:22,194 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2018-07-25 08:56:22,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-07-25 08:56:22,195 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:22,195 INFO L354 BasicCegarLoop]: trace histogram [86, 1, 1, 1] [2018-07-25 08:56:22,195 INFO L415 AbstractCegarLoop]: === Iteration 87 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:22,195 INFO L82 PathProgramCache]: Analyzing trace with hash 314487136, now seen corresponding path program 86 times [2018-07-25 08:56:22,195 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:22,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:22,501 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:22,501 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:22,501 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-07-25 08:56:22,502 INFO L451 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-07-25 08:56:22,503 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-07-25 08:56:22,503 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 08:56:22,503 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand 89 states. [2018-07-25 08:56:22,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:22,629 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-07-25 08:56:22,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-07-25 08:56:22,629 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 89 [2018-07-25 08:56:22,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:22,630 INFO L225 Difference]: With dead ends: 93 [2018-07-25 08:56:22,630 INFO L226 Difference]: Without dead ends: 91 [2018-07-25 08:56:22,630 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 08:56:22,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-07-25 08:56:22,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-07-25 08:56:22,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-07-25 08:56:22,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-07-25 08:56:22,634 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 89 [2018-07-25 08:56:22,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:22,634 INFO L472 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-07-25 08:56:22,634 INFO L473 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-07-25 08:56:22,634 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-07-25 08:56:22,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-07-25 08:56:22,635 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:22,635 INFO L354 BasicCegarLoop]: trace histogram [87, 1, 1, 1] [2018-07-25 08:56:22,635 INFO L415 AbstractCegarLoop]: === Iteration 88 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:22,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1159164678, now seen corresponding path program 87 times [2018-07-25 08:56:22,636 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:22,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:22,896 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:22,896 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:22,896 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-07-25 08:56:22,896 INFO L451 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-07-25 08:56:22,897 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-07-25 08:56:22,898 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 08:56:22,898 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 90 states. [2018-07-25 08:56:22,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:22,941 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2018-07-25 08:56:22,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-07-25 08:56:22,941 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 90 [2018-07-25 08:56:22,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:22,942 INFO L225 Difference]: With dead ends: 94 [2018-07-25 08:56:22,942 INFO L226 Difference]: Without dead ends: 92 [2018-07-25 08:56:22,943 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 08:56:22,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-07-25 08:56:22,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2018-07-25 08:56:22,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-07-25 08:56:22,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2018-07-25 08:56:22,946 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 90 [2018-07-25 08:56:22,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:22,946 INFO L472 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2018-07-25 08:56:22,946 INFO L473 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-07-25 08:56:22,946 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2018-07-25 08:56:22,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-07-25 08:56:22,947 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:22,947 INFO L354 BasicCegarLoop]: trace histogram [88, 1, 1, 1] [2018-07-25 08:56:22,947 INFO L415 AbstractCegarLoop]: === Iteration 89 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:22,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1574364704, now seen corresponding path program 88 times [2018-07-25 08:56:22,948 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:22,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:23,263 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:23,264 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:23,264 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2018-07-25 08:56:23,265 INFO L451 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-07-25 08:56:23,266 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-07-25 08:56:23,267 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 08:56:23,267 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand 91 states. [2018-07-25 08:56:23,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:23,382 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-07-25 08:56:23,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-07-25 08:56:23,383 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 91 [2018-07-25 08:56:23,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:23,387 INFO L225 Difference]: With dead ends: 95 [2018-07-25 08:56:23,387 INFO L226 Difference]: Without dead ends: 93 [2018-07-25 08:56:23,388 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 08:56:23,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-07-25 08:56:23,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-07-25 08:56:23,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-07-25 08:56:23,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-07-25 08:56:23,391 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 91 [2018-07-25 08:56:23,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:23,392 INFO L472 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-07-25 08:56:23,392 INFO L473 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-07-25 08:56:23,392 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-07-25 08:56:23,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-07-25 08:56:23,393 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:23,393 INFO L354 BasicCegarLoop]: trace histogram [89, 1, 1, 1] [2018-07-25 08:56:23,393 INFO L415 AbstractCegarLoop]: === Iteration 90 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:23,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1560663622, now seen corresponding path program 89 times [2018-07-25 08:56:23,393 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:23,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:23,709 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:23,709 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:23,709 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-07-25 08:56:23,710 INFO L451 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-07-25 08:56:23,710 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-07-25 08:56:23,711 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:56:23,711 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 92 states. [2018-07-25 08:56:23,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:23,778 INFO L93 Difference]: Finished difference Result 96 states and 96 transitions. [2018-07-25 08:56:23,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-07-25 08:56:23,778 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 92 [2018-07-25 08:56:23,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:23,779 INFO L225 Difference]: With dead ends: 96 [2018-07-25 08:56:23,779 INFO L226 Difference]: Without dead ends: 94 [2018-07-25 08:56:23,780 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:56:23,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-07-25 08:56:23,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2018-07-25 08:56:23,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-07-25 08:56:23,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2018-07-25 08:56:23,784 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 92 [2018-07-25 08:56:23,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:23,784 INFO L472 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2018-07-25 08:56:23,784 INFO L473 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-07-25 08:56:23,784 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2018-07-25 08:56:23,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-07-25 08:56:23,785 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:23,785 INFO L354 BasicCegarLoop]: trace histogram [90, 1, 1, 1] [2018-07-25 08:56:23,785 INFO L415 AbstractCegarLoop]: === Iteration 91 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:23,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1135930080, now seen corresponding path program 90 times [2018-07-25 08:56:23,788 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:23,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:24,130 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:24,130 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:24,130 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2018-07-25 08:56:24,131 INFO L451 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-07-25 08:56:24,132 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-07-25 08:56:24,132 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 08:56:24,132 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand 93 states. [2018-07-25 08:56:24,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:24,185 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-07-25 08:56:24,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-07-25 08:56:24,185 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 93 [2018-07-25 08:56:24,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:24,186 INFO L225 Difference]: With dead ends: 97 [2018-07-25 08:56:24,186 INFO L226 Difference]: Without dead ends: 95 [2018-07-25 08:56:24,187 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 08:56:24,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-07-25 08:56:24,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-07-25 08:56:24,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-07-25 08:56:24,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-07-25 08:56:24,190 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 93 [2018-07-25 08:56:24,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:24,191 INFO L472 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-07-25 08:56:24,191 INFO L473 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-07-25 08:56:24,191 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-07-25 08:56:24,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-07-25 08:56:24,192 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:24,192 INFO L354 BasicCegarLoop]: trace histogram [91, 1, 1, 1] [2018-07-25 08:56:24,192 INFO L415 AbstractCegarLoop]: === Iteration 92 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:24,192 INFO L82 PathProgramCache]: Analyzing trace with hash 854092166, now seen corresponding path program 91 times [2018-07-25 08:56:24,192 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:24,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:24,482 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:24,482 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:24,483 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-07-25 08:56:24,483 INFO L451 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-07-25 08:56:24,484 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-07-25 08:56:24,485 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 08:56:24,485 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 94 states. [2018-07-25 08:56:24,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:24,574 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2018-07-25 08:56:24,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-07-25 08:56:24,575 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 94 [2018-07-25 08:56:24,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:24,575 INFO L225 Difference]: With dead ends: 98 [2018-07-25 08:56:24,576 INFO L226 Difference]: Without dead ends: 96 [2018-07-25 08:56:24,576 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 08:56:24,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-07-25 08:56:24,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-07-25 08:56:24,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-07-25 08:56:24,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2018-07-25 08:56:24,579 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 94 [2018-07-25 08:56:24,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:24,580 INFO L472 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2018-07-25 08:56:24,580 INFO L473 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-07-25 08:56:24,580 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2018-07-25 08:56:24,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-07-25 08:56:24,580 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:24,581 INFO L354 BasicCegarLoop]: trace histogram [92, 1, 1, 1] [2018-07-25 08:56:24,581 INFO L415 AbstractCegarLoop]: === Iteration 93 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:24,581 INFO L82 PathProgramCache]: Analyzing trace with hash 707051424, now seen corresponding path program 92 times [2018-07-25 08:56:24,581 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:24,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:24,935 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:24,935 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:24,936 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2018-07-25 08:56:24,936 INFO L451 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-07-25 08:56:24,937 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-07-25 08:56:24,938 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 08:56:24,938 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 95 states. [2018-07-25 08:56:25,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:25,046 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-07-25 08:56:25,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-07-25 08:56:25,047 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 95 [2018-07-25 08:56:25,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:25,048 INFO L225 Difference]: With dead ends: 99 [2018-07-25 08:56:25,048 INFO L226 Difference]: Without dead ends: 97 [2018-07-25 08:56:25,048 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 08:56:25,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-07-25 08:56:25,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-07-25 08:56:25,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-07-25 08:56:25,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-07-25 08:56:25,052 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 95 [2018-07-25 08:56:25,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:25,052 INFO L472 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-07-25 08:56:25,052 INFO L473 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-07-25 08:56:25,053 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-07-25 08:56:25,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-07-25 08:56:25,053 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:25,053 INFO L354 BasicCegarLoop]: trace histogram [93, 1, 1, 1] [2018-07-25 08:56:25,054 INFO L415 AbstractCegarLoop]: === Iteration 94 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:25,054 INFO L82 PathProgramCache]: Analyzing trace with hash 443755718, now seen corresponding path program 93 times [2018-07-25 08:56:25,054 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:25,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:25,545 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:25,546 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:25,546 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-07-25 08:56:25,546 INFO L451 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-07-25 08:56:25,547 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-07-25 08:56:25,547 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 08:56:25,548 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 96 states. [2018-07-25 08:56:25,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:25,655 INFO L93 Difference]: Finished difference Result 100 states and 100 transitions. [2018-07-25 08:56:25,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-07-25 08:56:25,655 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 96 [2018-07-25 08:56:25,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:25,656 INFO L225 Difference]: With dead ends: 100 [2018-07-25 08:56:25,656 INFO L226 Difference]: Without dead ends: 98 [2018-07-25 08:56:25,657 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 08:56:25,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-07-25 08:56:25,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2018-07-25 08:56:25,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-07-25 08:56:25,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2018-07-25 08:56:25,660 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 96 [2018-07-25 08:56:25,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:25,663 INFO L472 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2018-07-25 08:56:25,663 INFO L473 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-07-25 08:56:25,663 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2018-07-25 08:56:25,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-07-25 08:56:25,663 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:25,664 INFO L354 BasicCegarLoop]: trace histogram [94, 1, 1, 1] [2018-07-25 08:56:25,664 INFO L415 AbstractCegarLoop]: === Iteration 95 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:25,664 INFO L82 PathProgramCache]: Analyzing trace with hash 871523424, now seen corresponding path program 94 times [2018-07-25 08:56:25,664 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:25,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:26,053 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:26,054 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:26,054 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96] total 96 [2018-07-25 08:56:26,055 INFO L451 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-07-25 08:56:26,056 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-07-25 08:56:26,057 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 08:56:26,058 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand 97 states. [2018-07-25 08:56:26,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:26,114 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-07-25 08:56:26,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-07-25 08:56:26,115 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 97 [2018-07-25 08:56:26,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:26,115 INFO L225 Difference]: With dead ends: 101 [2018-07-25 08:56:26,116 INFO L226 Difference]: Without dead ends: 99 [2018-07-25 08:56:26,116 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 08:56:26,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-07-25 08:56:26,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-07-25 08:56:26,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-07-25 08:56:26,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-07-25 08:56:26,120 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 97 [2018-07-25 08:56:26,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:26,120 INFO L472 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-07-25 08:56:26,120 INFO L473 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-07-25 08:56:26,120 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-07-25 08:56:26,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-07-25 08:56:26,121 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:26,121 INFO L354 BasicCegarLoop]: trace histogram [95, 1, 1, 1] [2018-07-25 08:56:26,121 INFO L415 AbstractCegarLoop]: === Iteration 96 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:26,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1247420422, now seen corresponding path program 95 times [2018-07-25 08:56:26,122 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:26,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:26,451 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:26,451 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:26,451 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-07-25 08:56:26,452 INFO L451 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-07-25 08:56:26,453 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-07-25 08:56:26,453 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:56:26,454 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 98 states. [2018-07-25 08:56:26,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:26,501 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2018-07-25 08:56:26,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-07-25 08:56:26,502 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 98 [2018-07-25 08:56:26,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:26,502 INFO L225 Difference]: With dead ends: 102 [2018-07-25 08:56:26,503 INFO L226 Difference]: Without dead ends: 100 [2018-07-25 08:56:26,503 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:56:26,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-07-25 08:56:26,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2018-07-25 08:56:26,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-07-25 08:56:26,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2018-07-25 08:56:26,506 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 98 [2018-07-25 08:56:26,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:26,506 INFO L472 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2018-07-25 08:56:26,507 INFO L473 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-07-25 08:56:26,507 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2018-07-25 08:56:26,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-07-25 08:56:26,507 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:26,507 INFO L354 BasicCegarLoop]: trace histogram [96, 1, 1, 1] [2018-07-25 08:56:26,508 INFO L415 AbstractCegarLoop]: === Iteration 97 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:26,508 INFO L82 PathProgramCache]: Analyzing trace with hash 15325472, now seen corresponding path program 96 times [2018-07-25 08:56:26,508 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:26,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:26,767 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:26,767 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:26,767 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98] total 98 [2018-07-25 08:56:26,768 INFO L451 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-07-25 08:56:26,769 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-07-25 08:56:26,769 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 08:56:26,769 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand 99 states. [2018-07-25 08:56:26,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:26,824 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-07-25 08:56:26,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-07-25 08:56:26,824 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 99 [2018-07-25 08:56:26,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:26,825 INFO L225 Difference]: With dead ends: 103 [2018-07-25 08:56:26,825 INFO L226 Difference]: Without dead ends: 101 [2018-07-25 08:56:26,826 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 08:56:26,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-07-25 08:56:26,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-07-25 08:56:26,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-07-25 08:56:26,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2018-07-25 08:56:26,829 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 99 [2018-07-25 08:56:26,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:26,829 INFO L472 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2018-07-25 08:56:26,829 INFO L473 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-07-25 08:56:26,830 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2018-07-25 08:56:26,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-07-25 08:56:26,830 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:26,830 INFO L354 BasicCegarLoop]: trace histogram [97, 1, 1, 1] [2018-07-25 08:56:26,831 INFO L415 AbstractCegarLoop]: === Iteration 98 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:26,831 INFO L82 PathProgramCache]: Analyzing trace with hash 475087686, now seen corresponding path program 97 times [2018-07-25 08:56:26,831 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:26,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:27,119 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:27,120 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:27,120 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-07-25 08:56:27,120 INFO L451 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-07-25 08:56:27,121 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-07-25 08:56:27,122 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 08:56:27,122 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 100 states. [2018-07-25 08:56:27,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:27,203 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2018-07-25 08:56:27,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-07-25 08:56:27,204 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 100 [2018-07-25 08:56:27,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:27,205 INFO L225 Difference]: With dead ends: 104 [2018-07-25 08:56:27,205 INFO L226 Difference]: Without dead ends: 102 [2018-07-25 08:56:27,206 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 08:56:27,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-07-25 08:56:27,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2018-07-25 08:56:27,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-07-25 08:56:27,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2018-07-25 08:56:27,209 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 100 [2018-07-25 08:56:27,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:27,210 INFO L472 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2018-07-25 08:56:27,210 INFO L473 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-07-25 08:56:27,210 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2018-07-25 08:56:27,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-07-25 08:56:27,210 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:27,210 INFO L354 BasicCegarLoop]: trace histogram [98, 1, 1, 1] [2018-07-25 08:56:27,211 INFO L415 AbstractCegarLoop]: === Iteration 99 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:27,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1842814432, now seen corresponding path program 98 times [2018-07-25 08:56:27,211 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:27,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:27,497 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:27,497 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:27,497 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100] total 100 [2018-07-25 08:56:27,497 INFO L451 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-07-25 08:56:27,498 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-07-25 08:56:27,499 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 08:56:27,499 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 101 states. [2018-07-25 08:56:27,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:27,555 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-07-25 08:56:27,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-07-25 08:56:27,555 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 101 [2018-07-25 08:56:27,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:27,556 INFO L225 Difference]: With dead ends: 105 [2018-07-25 08:56:27,556 INFO L226 Difference]: Without dead ends: 103 [2018-07-25 08:56:27,556 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 08:56:27,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-07-25 08:56:27,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-07-25 08:56:27,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-07-25 08:56:27,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-07-25 08:56:27,560 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 101 [2018-07-25 08:56:27,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:27,560 INFO L472 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-07-25 08:56:27,560 INFO L473 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-07-25 08:56:27,560 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-07-25 08:56:27,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-07-25 08:56:27,561 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:27,561 INFO L354 BasicCegarLoop]: trace histogram [99, 1, 1, 1] [2018-07-25 08:56:27,561 INFO L415 AbstractCegarLoop]: === Iteration 100 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:27,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1292670598, now seen corresponding path program 99 times [2018-07-25 08:56:27,561 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:27,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:27,848 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:27,848 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:27,848 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-07-25 08:56:27,848 INFO L451 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-07-25 08:56:27,849 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-07-25 08:56:27,849 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 08:56:27,850 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 102 states. [2018-07-25 08:56:27,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:27,903 INFO L93 Difference]: Finished difference Result 106 states and 106 transitions. [2018-07-25 08:56:27,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-07-25 08:56:27,903 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 102 [2018-07-25 08:56:27,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:27,904 INFO L225 Difference]: With dead ends: 106 [2018-07-25 08:56:27,904 INFO L226 Difference]: Without dead ends: 104 [2018-07-25 08:56:27,905 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 08:56:27,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-07-25 08:56:27,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2018-07-25 08:56:27,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-07-25 08:56:27,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2018-07-25 08:56:27,909 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 102 [2018-07-25 08:56:27,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:27,909 INFO L472 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2018-07-25 08:56:27,909 INFO L473 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-07-25 08:56:27,909 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2018-07-25 08:56:27,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-07-25 08:56:27,910 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:27,910 INFO L354 BasicCegarLoop]: trace histogram [100, 1, 1, 1] [2018-07-25 08:56:27,910 INFO L415 AbstractCegarLoop]: === Iteration 101 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:27,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1418080928, now seen corresponding path program 100 times [2018-07-25 08:56:27,910 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:27,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:28,269 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:28,270 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:28,270 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102] total 102 [2018-07-25 08:56:28,270 INFO L451 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-07-25 08:56:28,271 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-07-25 08:56:28,271 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 08:56:28,271 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand 103 states. [2018-07-25 08:56:28,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:28,329 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-07-25 08:56:28,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-07-25 08:56:28,329 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 103 [2018-07-25 08:56:28,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:28,330 INFO L225 Difference]: With dead ends: 107 [2018-07-25 08:56:28,330 INFO L226 Difference]: Without dead ends: 105 [2018-07-25 08:56:28,331 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 08:56:28,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-07-25 08:56:28,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-07-25 08:56:28,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-07-25 08:56:28,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-07-25 08:56:28,334 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 103 [2018-07-25 08:56:28,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:28,335 INFO L472 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-07-25 08:56:28,335 INFO L473 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-07-25 08:56:28,335 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-07-25 08:56:28,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-07-25 08:56:28,336 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:28,336 INFO L354 BasicCegarLoop]: trace histogram [101, 1, 1, 1] [2018-07-25 08:56:28,336 INFO L415 AbstractCegarLoop]: === Iteration 102 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:28,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1010833862, now seen corresponding path program 101 times [2018-07-25 08:56:28,336 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:28,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:28,731 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:28,731 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:28,732 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-07-25 08:56:28,732 INFO L451 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-07-25 08:56:28,733 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-07-25 08:56:28,733 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:56:28,734 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 104 states. [2018-07-25 08:56:28,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:28,789 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2018-07-25 08:56:28,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-07-25 08:56:28,789 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 104 [2018-07-25 08:56:28,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:28,790 INFO L225 Difference]: With dead ends: 108 [2018-07-25 08:56:28,790 INFO L226 Difference]: Without dead ends: 106 [2018-07-25 08:56:28,791 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:56:28,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-07-25 08:56:28,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-07-25 08:56:28,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-07-25 08:56:28,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2018-07-25 08:56:28,794 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 104 [2018-07-25 08:56:28,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:28,794 INFO L472 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2018-07-25 08:56:28,794 INFO L473 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-07-25 08:56:28,794 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2018-07-25 08:56:28,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-07-25 08:56:28,795 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:28,795 INFO L354 BasicCegarLoop]: trace histogram [102, 1, 1, 1] [2018-07-25 08:56:28,795 INFO L415 AbstractCegarLoop]: === Iteration 103 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:28,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1271076704, now seen corresponding path program 102 times [2018-07-25 08:56:28,796 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:28,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:29,098 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:29,098 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:29,098 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104] total 104 [2018-07-25 08:56:29,098 INFO L451 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-07-25 08:56:29,100 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-07-25 08:56:29,100 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 08:56:29,100 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 105 states. [2018-07-25 08:56:29,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:29,178 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-07-25 08:56:29,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-07-25 08:56:29,178 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 105 [2018-07-25 08:56:29,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:29,179 INFO L225 Difference]: With dead ends: 109 [2018-07-25 08:56:29,179 INFO L226 Difference]: Without dead ends: 107 [2018-07-25 08:56:29,179 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 08:56:29,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-07-25 08:56:29,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-07-25 08:56:29,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-07-25 08:56:29,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-07-25 08:56:29,182 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 105 [2018-07-25 08:56:29,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:29,183 INFO L472 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-07-25 08:56:29,183 INFO L473 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-07-25 08:56:29,183 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-07-25 08:56:29,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-07-25 08:56:29,183 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:29,183 INFO L354 BasicCegarLoop]: trace histogram [103, 1, 1, 1] [2018-07-25 08:56:29,184 INFO L415 AbstractCegarLoop]: === Iteration 104 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:29,184 INFO L82 PathProgramCache]: Analyzing trace with hash 748670214, now seen corresponding path program 103 times [2018-07-25 08:56:29,184 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:29,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:29,456 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:29,457 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:29,457 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2018-07-25 08:56:29,457 INFO L451 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-07-25 08:56:29,458 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-07-25 08:56:29,459 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 08:56:29,459 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 106 states. [2018-07-25 08:56:29,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:29,554 INFO L93 Difference]: Finished difference Result 110 states and 110 transitions. [2018-07-25 08:56:29,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-07-25 08:56:29,554 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 106 [2018-07-25 08:56:29,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:29,555 INFO L225 Difference]: With dead ends: 110 [2018-07-25 08:56:29,555 INFO L226 Difference]: Without dead ends: 108 [2018-07-25 08:56:29,556 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 08:56:29,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-07-25 08:56:29,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2018-07-25 08:56:29,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-07-25 08:56:29,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 108 transitions. [2018-07-25 08:56:29,559 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 108 transitions. Word has length 106 [2018-07-25 08:56:29,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:29,559 INFO L472 AbstractCegarLoop]: Abstraction has 108 states and 108 transitions. [2018-07-25 08:56:29,559 INFO L473 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-07-25 08:56:29,559 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 108 transitions. [2018-07-25 08:56:29,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-07-25 08:56:29,560 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:29,560 INFO L354 BasicCegarLoop]: trace histogram [104, 1, 1, 1] [2018-07-25 08:56:29,560 INFO L415 AbstractCegarLoop]: === Iteration 105 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:29,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1733938208, now seen corresponding path program 104 times [2018-07-25 08:56:29,560 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:29,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:29,895 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:29,895 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:29,895 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106] total 106 [2018-07-25 08:56:29,896 INFO L451 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-07-25 08:56:29,897 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-07-25 08:56:29,897 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 08:56:29,897 INFO L87 Difference]: Start difference. First operand 108 states and 108 transitions. Second operand 107 states. [2018-07-25 08:56:29,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:29,979 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-07-25 08:56:29,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-07-25 08:56:29,979 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 107 [2018-07-25 08:56:29,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:29,980 INFO L225 Difference]: With dead ends: 111 [2018-07-25 08:56:29,980 INFO L226 Difference]: Without dead ends: 109 [2018-07-25 08:56:29,981 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 08:56:29,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-07-25 08:56:29,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-07-25 08:56:29,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-07-25 08:56:29,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-07-25 08:56:29,985 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 107 [2018-07-25 08:56:29,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:29,986 INFO L472 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-07-25 08:56:29,986 INFO L473 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-07-25 08:56:29,986 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-07-25 08:56:29,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-07-25 08:56:29,987 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:29,987 INFO L354 BasicCegarLoop]: trace histogram [105, 1, 1, 1] [2018-07-25 08:56:29,987 INFO L415 AbstractCegarLoop]: === Iteration 106 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:29,987 INFO L82 PathProgramCache]: Analyzing trace with hash -2082492346, now seen corresponding path program 105 times [2018-07-25 08:56:29,987 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:30,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:30,351 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:30,351 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:30,352 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2018-07-25 08:56:30,352 INFO L451 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-07-25 08:56:30,353 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-07-25 08:56:30,353 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 08:56:30,353 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 108 states. [2018-07-25 08:56:30,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:30,397 INFO L93 Difference]: Finished difference Result 112 states and 112 transitions. [2018-07-25 08:56:30,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-07-25 08:56:30,397 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 108 [2018-07-25 08:56:30,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:30,398 INFO L225 Difference]: With dead ends: 112 [2018-07-25 08:56:30,398 INFO L226 Difference]: Without dead ends: 110 [2018-07-25 08:56:30,398 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 08:56:30,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-07-25 08:56:30,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2018-07-25 08:56:30,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-07-25 08:56:30,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions. [2018-07-25 08:56:30,401 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 108 [2018-07-25 08:56:30,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:30,402 INFO L472 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions. [2018-07-25 08:56:30,402 INFO L473 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-07-25 08:56:30,402 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions. [2018-07-25 08:56:30,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-07-25 08:56:30,402 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:30,403 INFO L354 BasicCegarLoop]: trace histogram [106, 1, 1, 1] [2018-07-25 08:56:30,403 INFO L415 AbstractCegarLoop]: === Iteration 107 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:30,403 INFO L82 PathProgramCache]: Analyzing trace with hash -132755232, now seen corresponding path program 106 times [2018-07-25 08:56:30,403 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:30,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:30,667 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 0 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:30,667 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:30,668 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108] total 108 [2018-07-25 08:56:30,668 INFO L451 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-07-25 08:56:30,669 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-07-25 08:56:30,669 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 08:56:30,669 INFO L87 Difference]: Start difference. First operand 110 states and 110 transitions. Second operand 109 states. [2018-07-25 08:56:30,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:30,752 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-07-25 08:56:30,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-07-25 08:56:30,752 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 109 [2018-07-25 08:56:30,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:30,753 INFO L225 Difference]: With dead ends: 113 [2018-07-25 08:56:30,753 INFO L226 Difference]: Without dead ends: 111 [2018-07-25 08:56:30,754 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 08:56:30,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-07-25 08:56:30,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-07-25 08:56:30,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-07-25 08:56:30,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-07-25 08:56:30,758 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 109 [2018-07-25 08:56:30,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:30,758 INFO L472 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-07-25 08:56:30,758 INFO L473 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-07-25 08:56:30,758 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-07-25 08:56:30,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-07-25 08:56:30,759 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:30,759 INFO L354 BasicCegarLoop]: trace histogram [107, 1, 1, 1] [2018-07-25 08:56:30,759 INFO L415 AbstractCegarLoop]: === Iteration 108 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:30,759 INFO L82 PathProgramCache]: Analyzing trace with hash 179553158, now seen corresponding path program 107 times [2018-07-25 08:56:30,759 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:30,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:31,051 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:31,052 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:31,052 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2018-07-25 08:56:31,052 INFO L451 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-07-25 08:56:31,054 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-07-25 08:56:31,054 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 08:56:31,055 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 110 states. [2018-07-25 08:56:31,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:31,163 INFO L93 Difference]: Finished difference Result 114 states and 114 transitions. [2018-07-25 08:56:31,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-07-25 08:56:31,164 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 110 [2018-07-25 08:56:31,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:31,164 INFO L225 Difference]: With dead ends: 114 [2018-07-25 08:56:31,164 INFO L226 Difference]: Without dead ends: 112 [2018-07-25 08:56:31,165 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 08:56:31,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-07-25 08:56:31,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2018-07-25 08:56:31,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-07-25 08:56:31,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 112 transitions. [2018-07-25 08:56:31,168 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 112 transitions. Word has length 110 [2018-07-25 08:56:31,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:31,169 INFO L472 AbstractCegarLoop]: Abstraction has 112 states and 112 transitions. [2018-07-25 08:56:31,169 INFO L473 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-07-25 08:56:31,169 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 112 transitions. [2018-07-25 08:56:31,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-07-25 08:56:31,170 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:31,170 INFO L354 BasicCegarLoop]: trace histogram [108, 1, 1, 1] [2018-07-25 08:56:31,170 INFO L415 AbstractCegarLoop]: === Iteration 109 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:31,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1271178656, now seen corresponding path program 108 times [2018-07-25 08:56:31,170 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:31,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:31,522 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 0 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:31,522 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:31,522 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110] total 110 [2018-07-25 08:56:31,522 INFO L451 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-07-25 08:56:31,524 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-07-25 08:56:31,524 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 08:56:31,524 INFO L87 Difference]: Start difference. First operand 112 states and 112 transitions. Second operand 111 states. [2018-07-25 08:56:31,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:31,600 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-07-25 08:56:31,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-07-25 08:56:31,600 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 111 [2018-07-25 08:56:31,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:31,601 INFO L225 Difference]: With dead ends: 115 [2018-07-25 08:56:31,601 INFO L226 Difference]: Without dead ends: 113 [2018-07-25 08:56:31,602 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 08:56:31,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-07-25 08:56:31,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-07-25 08:56:31,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-07-25 08:56:31,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2018-07-25 08:56:31,605 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 111 [2018-07-25 08:56:31,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:31,605 INFO L472 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2018-07-25 08:56:31,605 INFO L473 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-07-25 08:56:31,606 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2018-07-25 08:56:31,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-07-25 08:56:31,606 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:31,607 INFO L354 BasicCegarLoop]: trace histogram [109, 1, 1, 1] [2018-07-25 08:56:31,607 INFO L415 AbstractCegarLoop]: === Iteration 110 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:31,607 INFO L82 PathProgramCache]: Analyzing trace with hash 751830726, now seen corresponding path program 109 times [2018-07-25 08:56:31,607 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:31,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:31,942 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:31,943 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:31,943 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111] total 111 [2018-07-25 08:56:31,943 INFO L451 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-07-25 08:56:31,944 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-07-25 08:56:31,945 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 08:56:31,945 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 112 states. [2018-07-25 08:56:32,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:32,060 INFO L93 Difference]: Finished difference Result 116 states and 116 transitions. [2018-07-25 08:56:32,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-07-25 08:56:32,061 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 112 [2018-07-25 08:56:32,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:32,061 INFO L225 Difference]: With dead ends: 116 [2018-07-25 08:56:32,061 INFO L226 Difference]: Without dead ends: 114 [2018-07-25 08:56:32,062 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 08:56:32,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-07-25 08:56:32,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2018-07-25 08:56:32,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-07-25 08:56:32,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 114 transitions. [2018-07-25 08:56:32,064 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 114 transitions. Word has length 112 [2018-07-25 08:56:32,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:32,064 INFO L472 AbstractCegarLoop]: Abstraction has 114 states and 114 transitions. [2018-07-25 08:56:32,064 INFO L473 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-07-25 08:56:32,065 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 114 transitions. [2018-07-25 08:56:32,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-07-25 08:56:32,065 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:32,065 INFO L354 BasicCegarLoop]: trace histogram [110, 1, 1, 1] [2018-07-25 08:56:32,065 INFO L415 AbstractCegarLoop]: === Iteration 111 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:32,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1831914080, now seen corresponding path program 110 times [2018-07-25 08:56:32,065 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:32,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:32,407 INFO L134 CoverageAnalysis]: Checked inductivity of 6105 backedges. 0 proven. 6105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:32,407 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:32,407 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112] total 112 [2018-07-25 08:56:32,407 INFO L451 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-07-25 08:56:32,408 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-07-25 08:56:32,409 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 08:56:32,409 INFO L87 Difference]: Start difference. First operand 114 states and 114 transitions. Second operand 113 states. [2018-07-25 08:56:32,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:32,460 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-07-25 08:56:32,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-07-25 08:56:32,461 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 113 [2018-07-25 08:56:32,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:32,461 INFO L225 Difference]: With dead ends: 117 [2018-07-25 08:56:32,461 INFO L226 Difference]: Without dead ends: 115 [2018-07-25 08:56:32,462 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 08:56:32,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-07-25 08:56:32,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-07-25 08:56:32,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-07-25 08:56:32,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-07-25 08:56:32,465 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 113 [2018-07-25 08:56:32,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:32,465 INFO L472 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-07-25 08:56:32,465 INFO L473 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-07-25 08:56:32,466 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-07-25 08:56:32,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-07-25 08:56:32,466 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:32,466 INFO L354 BasicCegarLoop]: trace histogram [111, 1, 1, 1] [2018-07-25 08:56:32,466 INFO L415 AbstractCegarLoop]: === Iteration 112 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:32,467 INFO L82 PathProgramCache]: Analyzing trace with hash 954759686, now seen corresponding path program 111 times [2018-07-25 08:56:32,467 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:32,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:32,768 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:32,768 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:32,768 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113] total 113 [2018-07-25 08:56:32,768 INFO L451 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-07-25 08:56:32,769 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-07-25 08:56:32,770 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 08:56:32,770 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 114 states. [2018-07-25 08:56:32,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:32,902 INFO L93 Difference]: Finished difference Result 118 states and 118 transitions. [2018-07-25 08:56:32,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-07-25 08:56:32,902 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 114 [2018-07-25 08:56:32,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:32,903 INFO L225 Difference]: With dead ends: 118 [2018-07-25 08:56:32,903 INFO L226 Difference]: Without dead ends: 116 [2018-07-25 08:56:32,904 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 08:56:32,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-07-25 08:56:32,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2018-07-25 08:56:32,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-07-25 08:56:32,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 116 transitions. [2018-07-25 08:56:32,908 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 116 transitions. Word has length 114 [2018-07-25 08:56:32,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:32,908 INFO L472 AbstractCegarLoop]: Abstraction has 116 states and 116 transitions. [2018-07-25 08:56:32,908 INFO L473 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-07-25 08:56:32,909 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 116 transitions. [2018-07-25 08:56:32,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-07-25 08:56:32,909 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:32,909 INFO L354 BasicCegarLoop]: trace histogram [112, 1, 1, 1] [2018-07-25 08:56:32,910 INFO L415 AbstractCegarLoop]: === Iteration 113 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:32,910 INFO L82 PathProgramCache]: Analyzing trace with hash -467222752, now seen corresponding path program 112 times [2018-07-25 08:56:32,910 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:32,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:33,303 INFO L134 CoverageAnalysis]: Checked inductivity of 6328 backedges. 0 proven. 6328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:33,303 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:33,303 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114] total 114 [2018-07-25 08:56:33,304 INFO L451 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-07-25 08:56:33,305 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-07-25 08:56:33,305 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 08:56:33,306 INFO L87 Difference]: Start difference. First operand 116 states and 116 transitions. Second operand 115 states. [2018-07-25 08:56:33,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:33,430 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2018-07-25 08:56:33,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-07-25 08:56:33,431 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 115 [2018-07-25 08:56:33,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:33,431 INFO L225 Difference]: With dead ends: 119 [2018-07-25 08:56:33,432 INFO L226 Difference]: Without dead ends: 117 [2018-07-25 08:56:33,433 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 08:56:33,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-07-25 08:56:33,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-07-25 08:56:33,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-07-25 08:56:33,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2018-07-25 08:56:33,436 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 115 [2018-07-25 08:56:33,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:33,436 INFO L472 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2018-07-25 08:56:33,436 INFO L473 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-07-25 08:56:33,437 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2018-07-25 08:56:33,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-07-25 08:56:33,437 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:33,437 INFO L354 BasicCegarLoop]: trace histogram [113, 1, 1, 1] [2018-07-25 08:56:33,438 INFO L415 AbstractCegarLoop]: === Iteration 114 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:33,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1599005370, now seen corresponding path program 113 times [2018-07-25 08:56:33,438 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:33,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:33,867 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:33,867 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:33,867 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115] total 115 [2018-07-25 08:56:33,867 INFO L451 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-07-25 08:56:33,868 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-07-25 08:56:33,869 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 08:56:33,869 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand 116 states. [2018-07-25 08:56:33,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:33,982 INFO L93 Difference]: Finished difference Result 120 states and 120 transitions. [2018-07-25 08:56:33,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-07-25 08:56:33,982 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 116 [2018-07-25 08:56:33,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:33,983 INFO L225 Difference]: With dead ends: 120 [2018-07-25 08:56:33,983 INFO L226 Difference]: Without dead ends: 118 [2018-07-25 08:56:33,984 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 08:56:33,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-07-25 08:56:33,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2018-07-25 08:56:33,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-07-25 08:56:33,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 118 transitions. [2018-07-25 08:56:33,987 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 118 transitions. Word has length 116 [2018-07-25 08:56:33,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:33,988 INFO L472 AbstractCegarLoop]: Abstraction has 118 states and 118 transitions. [2018-07-25 08:56:33,988 INFO L473 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-07-25 08:56:33,988 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 118 transitions. [2018-07-25 08:56:33,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-07-25 08:56:33,989 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:33,989 INFO L354 BasicCegarLoop]: trace histogram [114, 1, 1, 1] [2018-07-25 08:56:33,989 INFO L415 AbstractCegarLoop]: === Iteration 115 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:33,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1970439136, now seen corresponding path program 114 times [2018-07-25 08:56:33,989 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:34,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:34,351 INFO L134 CoverageAnalysis]: Checked inductivity of 6555 backedges. 0 proven. 6555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:34,351 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:34,351 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116] total 116 [2018-07-25 08:56:34,351 INFO L451 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-07-25 08:56:34,353 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-07-25 08:56:34,353 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 08:56:34,353 INFO L87 Difference]: Start difference. First operand 118 states and 118 transitions. Second operand 117 states. [2018-07-25 08:56:34,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:34,441 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-07-25 08:56:34,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-07-25 08:56:34,441 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 117 [2018-07-25 08:56:34,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:34,442 INFO L225 Difference]: With dead ends: 121 [2018-07-25 08:56:34,442 INFO L226 Difference]: Without dead ends: 119 [2018-07-25 08:56:34,443 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 08:56:34,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-07-25 08:56:34,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-07-25 08:56:34,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-07-25 08:56:34,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-07-25 08:56:34,447 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 117 [2018-07-25 08:56:34,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:34,447 INFO L472 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-07-25 08:56:34,447 INFO L473 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-07-25 08:56:34,448 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-07-25 08:56:34,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-07-25 08:56:34,448 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:34,448 INFO L354 BasicCegarLoop]: trace histogram [115, 1, 1, 1] [2018-07-25 08:56:34,449 INFO L415 AbstractCegarLoop]: === Iteration 116 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:34,449 INFO L82 PathProgramCache]: Analyzing trace with hash 954069126, now seen corresponding path program 115 times [2018-07-25 08:56:34,449 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:34,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:34,989 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 0 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:34,989 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:34,990 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117] total 117 [2018-07-25 08:56:34,990 INFO L451 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-07-25 08:56:34,990 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-07-25 08:56:34,991 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 08:56:34,991 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 118 states. [2018-07-25 08:56:35,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:35,139 INFO L93 Difference]: Finished difference Result 122 states and 122 transitions. [2018-07-25 08:56:35,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-07-25 08:56:35,139 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 118 [2018-07-25 08:56:35,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:35,140 INFO L225 Difference]: With dead ends: 122 [2018-07-25 08:56:35,140 INFO L226 Difference]: Without dead ends: 120 [2018-07-25 08:56:35,140 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 08:56:35,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-07-25 08:56:35,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2018-07-25 08:56:35,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2018-07-25 08:56:35,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 120 transitions. [2018-07-25 08:56:35,144 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 120 transitions. Word has length 118 [2018-07-25 08:56:35,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:35,144 INFO L472 AbstractCegarLoop]: Abstraction has 120 states and 120 transitions. [2018-07-25 08:56:35,144 INFO L473 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-07-25 08:56:35,144 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 120 transitions. [2018-07-25 08:56:35,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-07-25 08:56:35,145 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:35,145 INFO L354 BasicCegarLoop]: trace histogram [116, 1, 1, 1] [2018-07-25 08:56:35,145 INFO L415 AbstractCegarLoop]: === Iteration 117 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:35,145 INFO L82 PathProgramCache]: Analyzing trace with hash -488630112, now seen corresponding path program 116 times [2018-07-25 08:56:35,146 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:35,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:35,474 INFO L134 CoverageAnalysis]: Checked inductivity of 6786 backedges. 0 proven. 6786 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:35,474 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:35,474 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118] total 118 [2018-07-25 08:56:35,475 INFO L451 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-07-25 08:56:35,476 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-07-25 08:56:35,476 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 08:56:35,476 INFO L87 Difference]: Start difference. First operand 120 states and 120 transitions. Second operand 119 states. [2018-07-25 08:56:35,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:35,595 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2018-07-25 08:56:35,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-07-25 08:56:35,595 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 119 [2018-07-25 08:56:35,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:35,596 INFO L225 Difference]: With dead ends: 123 [2018-07-25 08:56:35,596 INFO L226 Difference]: Without dead ends: 121 [2018-07-25 08:56:35,596 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 08:56:35,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-07-25 08:56:35,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-07-25 08:56:35,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-07-25 08:56:35,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2018-07-25 08:56:35,598 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 119 [2018-07-25 08:56:35,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:35,599 INFO L472 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2018-07-25 08:56:35,599 INFO L473 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-07-25 08:56:35,599 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2018-07-25 08:56:35,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-07-25 08:56:35,599 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:35,599 INFO L354 BasicCegarLoop]: trace histogram [117, 1, 1, 1] [2018-07-25 08:56:35,600 INFO L415 AbstractCegarLoop]: === Iteration 118 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:35,600 INFO L82 PathProgramCache]: Analyzing trace with hash 2032333766, now seen corresponding path program 117 times [2018-07-25 08:56:35,600 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:35,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:35,943 INFO L134 CoverageAnalysis]: Checked inductivity of 6903 backedges. 0 proven. 6903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:35,944 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:35,944 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119] total 119 [2018-07-25 08:56:35,944 INFO L451 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-07-25 08:56:35,945 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-07-25 08:56:35,946 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 08:56:35,947 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand 120 states. [2018-07-25 08:56:36,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:36,072 INFO L93 Difference]: Finished difference Result 124 states and 124 transitions. [2018-07-25 08:56:36,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-07-25 08:56:36,073 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 120 [2018-07-25 08:56:36,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:36,073 INFO L225 Difference]: With dead ends: 124 [2018-07-25 08:56:36,073 INFO L226 Difference]: Without dead ends: 122 [2018-07-25 08:56:36,074 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 08:56:36,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-07-25 08:56:36,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2018-07-25 08:56:36,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-07-25 08:56:36,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 122 transitions. [2018-07-25 08:56:36,077 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 122 transitions. Word has length 120 [2018-07-25 08:56:36,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:36,077 INFO L472 AbstractCegarLoop]: Abstraction has 122 states and 122 transitions. [2018-07-25 08:56:36,077 INFO L473 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-07-25 08:56:36,077 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 122 transitions. [2018-07-25 08:56:36,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-07-25 08:56:36,077 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:36,078 INFO L354 BasicCegarLoop]: trace histogram [118, 1, 1, 1] [2018-07-25 08:56:36,078 INFO L415 AbstractCegarLoop]: === Iteration 119 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:36,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1422164640, now seen corresponding path program 118 times [2018-07-25 08:56:36,078 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:36,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:36,415 INFO L134 CoverageAnalysis]: Checked inductivity of 7021 backedges. 0 proven. 7021 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:36,415 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:36,415 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120] total 120 [2018-07-25 08:56:36,415 INFO L451 AbstractCegarLoop]: Interpolant automaton has 121 states [2018-07-25 08:56:36,416 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2018-07-25 08:56:36,417 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2018-07-25 08:56:36,417 INFO L87 Difference]: Start difference. First operand 122 states and 122 transitions. Second operand 121 states. [2018-07-25 08:56:36,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:36,531 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-07-25 08:56:36,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-07-25 08:56:36,532 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 121 [2018-07-25 08:56:36,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:36,532 INFO L225 Difference]: With dead ends: 125 [2018-07-25 08:56:36,532 INFO L226 Difference]: Without dead ends: 123 [2018-07-25 08:56:36,533 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2018-07-25 08:56:36,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-07-25 08:56:36,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-07-25 08:56:36,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-07-25 08:56:36,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2018-07-25 08:56:36,537 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 121 [2018-07-25 08:56:36,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:36,537 INFO L472 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2018-07-25 08:56:36,537 INFO L473 AbstractCegarLoop]: Interpolant automaton has 121 states. [2018-07-25 08:56:36,537 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2018-07-25 08:56:36,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-07-25 08:56:36,538 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:36,538 INFO L354 BasicCegarLoop]: trace histogram [119, 1, 1, 1] [2018-07-25 08:56:36,538 INFO L415 AbstractCegarLoop]: === Iteration 120 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:36,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1137432826, now seen corresponding path program 119 times [2018-07-25 08:56:36,538 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:36,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:36,912 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 08:56:36,912 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:36,912 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121] total 121 [2018-07-25 08:56:36,913 INFO L451 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-07-25 08:56:36,914 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-07-25 08:56:36,914 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 08:56:36,915 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 122 states. [2018-07-25 08:56:36,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:36,975 INFO L93 Difference]: Finished difference Result 126 states and 126 transitions. [2018-07-25 08:56:36,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-07-25 08:56:36,975 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 122 [2018-07-25 08:56:36,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:36,975 INFO L225 Difference]: With dead ends: 126 [2018-07-25 08:56:36,975 INFO L226 Difference]: Without dead ends: 124 [2018-07-25 08:56:36,976 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 08:56:36,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-07-25 08:56:36,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2018-07-25 08:56:36,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-07-25 08:56:36,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 124 transitions. [2018-07-25 08:56:36,979 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 124 transitions. Word has length 122 [2018-07-25 08:56:36,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:36,979 INFO L472 AbstractCegarLoop]: Abstraction has 124 states and 124 transitions. [2018-07-25 08:56:36,980 INFO L473 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-07-25 08:56:36,980 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 124 transitions. [2018-07-25 08:56:36,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-07-25 08:56:36,980 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:36,980 INFO L354 BasicCegarLoop]: trace histogram [120, 1, 1, 1] [2018-07-25 08:56:36,981 INFO L415 AbstractCegarLoop]: === Iteration 121 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:36,981 INFO L82 PathProgramCache]: Analyzing trace with hash -900681184, now seen corresponding path program 120 times [2018-07-25 08:56:36,981 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:37,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:37,454 INFO L134 CoverageAnalysis]: Checked inductivity of 7260 backedges. 0 proven. 7260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:37,455 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:37,455 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [122] total 122 [2018-07-25 08:56:37,455 INFO L451 AbstractCegarLoop]: Interpolant automaton has 123 states [2018-07-25 08:56:37,456 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2018-07-25 08:56:37,456 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2018-07-25 08:56:37,456 INFO L87 Difference]: Start difference. First operand 124 states and 124 transitions. Second operand 123 states. [2018-07-25 08:56:37,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:37,591 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2018-07-25 08:56:37,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-07-25 08:56:37,591 INFO L78 Accepts]: Start accepts. Automaton has 123 states. Word has length 123 [2018-07-25 08:56:37,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:37,592 INFO L225 Difference]: With dead ends: 127 [2018-07-25 08:56:37,592 INFO L226 Difference]: Without dead ends: 125 [2018-07-25 08:56:37,593 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2018-07-25 08:56:37,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-07-25 08:56:37,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-07-25 08:56:37,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-07-25 08:56:37,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 125 transitions. [2018-07-25 08:56:37,596 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 125 transitions. Word has length 123 [2018-07-25 08:56:37,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:37,596 INFO L472 AbstractCegarLoop]: Abstraction has 125 states and 125 transitions. [2018-07-25 08:56:37,596 INFO L473 AbstractCegarLoop]: Interpolant automaton has 123 states. [2018-07-25 08:56:37,596 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 125 transitions. [2018-07-25 08:56:37,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-07-25 08:56:37,597 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:37,597 INFO L354 BasicCegarLoop]: trace histogram [121, 1, 1, 1] [2018-07-25 08:56:37,597 INFO L415 AbstractCegarLoop]: === Iteration 122 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:37,597 INFO L82 PathProgramCache]: Analyzing trace with hash 2143652422, now seen corresponding path program 121 times [2018-07-25 08:56:37,597 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:37,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:37,970 INFO L134 CoverageAnalysis]: Checked inductivity of 7381 backedges. 0 proven. 7381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:37,970 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:37,970 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123] total 123 [2018-07-25 08:56:37,971 INFO L451 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-07-25 08:56:37,972 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-07-25 08:56:37,973 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 08:56:37,973 INFO L87 Difference]: Start difference. First operand 125 states and 125 transitions. Second operand 124 states. [2018-07-25 08:56:38,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:38,142 INFO L93 Difference]: Finished difference Result 128 states and 128 transitions. [2018-07-25 08:56:38,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-07-25 08:56:38,142 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 124 [2018-07-25 08:56:38,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:38,143 INFO L225 Difference]: With dead ends: 128 [2018-07-25 08:56:38,143 INFO L226 Difference]: Without dead ends: 126 [2018-07-25 08:56:38,144 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 08:56:38,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-07-25 08:56:38,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2018-07-25 08:56:38,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-07-25 08:56:38,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 126 transitions. [2018-07-25 08:56:38,148 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 126 transitions. Word has length 124 [2018-07-25 08:56:38,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:38,148 INFO L472 AbstractCegarLoop]: Abstraction has 126 states and 126 transitions. [2018-07-25 08:56:38,148 INFO L473 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-07-25 08:56:38,148 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 126 transitions. [2018-07-25 08:56:38,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-07-25 08:56:38,149 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:38,149 INFO L354 BasicCegarLoop]: trace histogram [122, 1, 1, 1] [2018-07-25 08:56:38,149 INFO L415 AbstractCegarLoop]: === Iteration 123 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:38,149 INFO L82 PathProgramCache]: Analyzing trace with hash 2028713696, now seen corresponding path program 122 times [2018-07-25 08:56:38,150 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:38,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:38,807 INFO L134 CoverageAnalysis]: Checked inductivity of 7503 backedges. 0 proven. 7503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:38,808 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:38,808 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [124] total 124 [2018-07-25 08:56:38,808 INFO L451 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-07-25 08:56:38,810 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-07-25 08:56:38,811 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2018-07-25 08:56:38,811 INFO L87 Difference]: Start difference. First operand 126 states and 126 transitions. Second operand 125 states. [2018-07-25 08:56:39,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:39,134 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-07-25 08:56:39,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-07-25 08:56:39,134 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 125 [2018-07-25 08:56:39,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:39,135 INFO L225 Difference]: With dead ends: 129 [2018-07-25 08:56:39,135 INFO L226 Difference]: Without dead ends: 127 [2018-07-25 08:56:39,136 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2018-07-25 08:56:39,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-07-25 08:56:39,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-07-25 08:56:39,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-07-25 08:56:39,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-07-25 08:56:39,139 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 125 [2018-07-25 08:56:39,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:39,140 INFO L472 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-07-25 08:56:39,140 INFO L473 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-07-25 08:56:39,140 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-07-25 08:56:39,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-07-25 08:56:39,141 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:39,141 INFO L354 BasicCegarLoop]: trace histogram [123, 1, 1, 1] [2018-07-25 08:56:39,141 INFO L415 AbstractCegarLoop]: === Iteration 124 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:39,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1534386810, now seen corresponding path program 123 times [2018-07-25 08:56:39,142 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:39,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:39,800 INFO L134 CoverageAnalysis]: Checked inductivity of 7626 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:39,800 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:39,800 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125] total 125 [2018-07-25 08:56:39,800 INFO L451 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-07-25 08:56:39,802 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-07-25 08:56:39,803 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7875, Invalid=7875, Unknown=0, NotChecked=0, Total=15750 [2018-07-25 08:56:39,804 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 126 states. [2018-07-25 08:56:40,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:40,044 INFO L93 Difference]: Finished difference Result 130 states and 130 transitions. [2018-07-25 08:56:40,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-07-25 08:56:40,044 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 126 [2018-07-25 08:56:40,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:40,044 INFO L225 Difference]: With dead ends: 130 [2018-07-25 08:56:40,045 INFO L226 Difference]: Without dead ends: 128 [2018-07-25 08:56:40,046 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=7875, Invalid=7875, Unknown=0, NotChecked=0, Total=15750 [2018-07-25 08:56:40,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-07-25 08:56:40,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2018-07-25 08:56:40,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-07-25 08:56:40,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 128 transitions. [2018-07-25 08:56:40,049 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 128 transitions. Word has length 126 [2018-07-25 08:56:40,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:40,050 INFO L472 AbstractCegarLoop]: Abstraction has 128 states and 128 transitions. [2018-07-25 08:56:40,050 INFO L473 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-07-25 08:56:40,050 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 128 transitions. [2018-07-25 08:56:40,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-07-25 08:56:40,051 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:40,051 INFO L354 BasicCegarLoop]: trace histogram [124, 1, 1, 1] [2018-07-25 08:56:40,051 INFO L415 AbstractCegarLoop]: === Iteration 125 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:40,051 INFO L82 PathProgramCache]: Analyzing trace with hash -321352800, now seen corresponding path program 124 times [2018-07-25 08:56:40,054 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:40,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:40,460 INFO L134 CoverageAnalysis]: Checked inductivity of 7750 backedges. 0 proven. 7750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:40,460 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:40,460 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [126] total 126 [2018-07-25 08:56:40,460 INFO L451 AbstractCegarLoop]: Interpolant automaton has 127 states [2018-07-25 08:56:40,462 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2018-07-25 08:56:40,462 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2018-07-25 08:56:40,463 INFO L87 Difference]: Start difference. First operand 128 states and 128 transitions. Second operand 127 states. [2018-07-25 08:56:40,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:40,665 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2018-07-25 08:56:40,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-07-25 08:56:40,665 INFO L78 Accepts]: Start accepts. Automaton has 127 states. Word has length 127 [2018-07-25 08:56:40,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:40,665 INFO L225 Difference]: With dead ends: 131 [2018-07-25 08:56:40,665 INFO L226 Difference]: Without dead ends: 129 [2018-07-25 08:56:40,666 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2018-07-25 08:56:40,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-07-25 08:56:40,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-07-25 08:56:40,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-07-25 08:56:40,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 129 transitions. [2018-07-25 08:56:40,668 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 129 transitions. Word has length 127 [2018-07-25 08:56:40,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:40,668 INFO L472 AbstractCegarLoop]: Abstraction has 129 states and 129 transitions. [2018-07-25 08:56:40,669 INFO L473 AbstractCegarLoop]: Interpolant automaton has 127 states. [2018-07-25 08:56:40,669 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 129 transitions. [2018-07-25 08:56:40,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-07-25 08:56:40,669 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:40,669 INFO L354 BasicCegarLoop]: trace histogram [125, 1, 1, 1] [2018-07-25 08:56:40,669 INFO L415 AbstractCegarLoop]: === Iteration 126 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:40,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1372004154, now seen corresponding path program 125 times [2018-07-25 08:56:40,670 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:40,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:41,227 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:41,227 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:41,227 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127] total 127 [2018-07-25 08:56:41,227 INFO L451 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-07-25 08:56:41,228 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-07-25 08:56:41,229 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 08:56:41,229 INFO L87 Difference]: Start difference. First operand 129 states and 129 transitions. Second operand 128 states. [2018-07-25 08:56:41,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:41,321 INFO L93 Difference]: Finished difference Result 132 states and 132 transitions. [2018-07-25 08:56:41,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-07-25 08:56:41,321 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 128 [2018-07-25 08:56:41,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:41,321 INFO L225 Difference]: With dead ends: 132 [2018-07-25 08:56:41,321 INFO L226 Difference]: Without dead ends: 130 [2018-07-25 08:56:41,322 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 08:56:41,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-07-25 08:56:41,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2018-07-25 08:56:41,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-07-25 08:56:41,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 130 transitions. [2018-07-25 08:56:41,325 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 130 transitions. Word has length 128 [2018-07-25 08:56:41,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:41,326 INFO L472 AbstractCegarLoop]: Abstraction has 130 states and 130 transitions. [2018-07-25 08:56:41,326 INFO L473 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-07-25 08:56:41,326 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 130 transitions. [2018-07-25 08:56:41,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-07-25 08:56:41,330 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:41,330 INFO L354 BasicCegarLoop]: trace histogram [126, 1, 1, 1] [2018-07-25 08:56:41,331 INFO L415 AbstractCegarLoop]: === Iteration 127 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:41,331 INFO L82 PathProgramCache]: Analyzing trace with hash 417542240, now seen corresponding path program 126 times [2018-07-25 08:56:41,336 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:41,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:41,855 INFO L134 CoverageAnalysis]: Checked inductivity of 8001 backedges. 0 proven. 8001 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:41,855 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:41,856 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [128] total 128 [2018-07-25 08:56:41,856 INFO L451 AbstractCegarLoop]: Interpolant automaton has 129 states [2018-07-25 08:56:41,857 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2018-07-25 08:56:41,858 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2018-07-25 08:56:41,858 INFO L87 Difference]: Start difference. First operand 130 states and 130 transitions. Second operand 129 states. [2018-07-25 08:56:42,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:42,025 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-07-25 08:56:42,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-07-25 08:56:42,025 INFO L78 Accepts]: Start accepts. Automaton has 129 states. Word has length 129 [2018-07-25 08:56:42,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:42,026 INFO L225 Difference]: With dead ends: 133 [2018-07-25 08:56:42,026 INFO L226 Difference]: Without dead ends: 131 [2018-07-25 08:56:42,027 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2018-07-25 08:56:42,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-07-25 08:56:42,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-07-25 08:56:42,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-07-25 08:56:42,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2018-07-25 08:56:42,031 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 129 [2018-07-25 08:56:42,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:42,031 INFO L472 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2018-07-25 08:56:42,031 INFO L473 AbstractCegarLoop]: Interpolant automaton has 129 states. [2018-07-25 08:56:42,031 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2018-07-25 08:56:42,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-07-25 08:56:42,032 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:42,032 INFO L354 BasicCegarLoop]: trace histogram [127, 1, 1, 1] [2018-07-25 08:56:42,032 INFO L415 AbstractCegarLoop]: === Iteration 128 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:42,032 INFO L82 PathProgramCache]: Analyzing trace with hash 58905606, now seen corresponding path program 127 times [2018-07-25 08:56:42,032 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:42,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:42,448 INFO L134 CoverageAnalysis]: Checked inductivity of 8128 backedges. 0 proven. 8128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:42,449 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:42,449 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129] total 129 [2018-07-25 08:56:42,449 INFO L451 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-07-25 08:56:42,451 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-07-25 08:56:42,452 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8385, Invalid=8385, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 08:56:42,452 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 130 states. [2018-07-25 08:56:42,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:42,527 INFO L93 Difference]: Finished difference Result 134 states and 134 transitions. [2018-07-25 08:56:42,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-07-25 08:56:42,527 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 130 [2018-07-25 08:56:42,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:42,528 INFO L225 Difference]: With dead ends: 134 [2018-07-25 08:56:42,528 INFO L226 Difference]: Without dead ends: 132 [2018-07-25 08:56:42,529 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8385, Invalid=8385, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 08:56:42,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-07-25 08:56:42,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2018-07-25 08:56:42,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-07-25 08:56:42,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 132 transitions. [2018-07-25 08:56:42,532 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 132 transitions. Word has length 130 [2018-07-25 08:56:42,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:42,533 INFO L472 AbstractCegarLoop]: Abstraction has 132 states and 132 transitions. [2018-07-25 08:56:42,533 INFO L473 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-07-25 08:56:42,533 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 132 transitions. [2018-07-25 08:56:42,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-07-25 08:56:42,533 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:42,534 INFO L354 BasicCegarLoop]: trace histogram [128, 1, 1, 1] [2018-07-25 08:56:42,534 INFO L415 AbstractCegarLoop]: === Iteration 129 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:42,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1826071840, now seen corresponding path program 128 times [2018-07-25 08:56:42,534 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:42,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:42,955 INFO L134 CoverageAnalysis]: Checked inductivity of 8256 backedges. 0 proven. 8256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:42,955 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:42,955 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [130] total 130 [2018-07-25 08:56:42,956 INFO L451 AbstractCegarLoop]: Interpolant automaton has 131 states [2018-07-25 08:56:42,957 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2018-07-25 08:56:42,958 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8515, Invalid=8515, Unknown=0, NotChecked=0, Total=17030 [2018-07-25 08:56:42,958 INFO L87 Difference]: Start difference. First operand 132 states and 132 transitions. Second operand 131 states. [2018-07-25 08:56:43,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:43,113 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2018-07-25 08:56:43,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-07-25 08:56:43,114 INFO L78 Accepts]: Start accepts. Automaton has 131 states. Word has length 131 [2018-07-25 08:56:43,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:43,114 INFO L225 Difference]: With dead ends: 135 [2018-07-25 08:56:43,114 INFO L226 Difference]: Without dead ends: 133 [2018-07-25 08:56:43,115 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8515, Invalid=8515, Unknown=0, NotChecked=0, Total=17030 [2018-07-25 08:56:43,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-07-25 08:56:43,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-07-25 08:56:43,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-07-25 08:56:43,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2018-07-25 08:56:43,118 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 131 [2018-07-25 08:56:43,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:43,118 INFO L472 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2018-07-25 08:56:43,118 INFO L473 AbstractCegarLoop]: Interpolant automaton has 131 states. [2018-07-25 08:56:43,118 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2018-07-25 08:56:43,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-07-25 08:56:43,119 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:43,119 INFO L354 BasicCegarLoop]: trace histogram [129, 1, 1, 1] [2018-07-25 08:56:43,119 INFO L415 AbstractCegarLoop]: === Iteration 130 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:43,119 INFO L82 PathProgramCache]: Analyzing trace with hash 773650246, now seen corresponding path program 129 times [2018-07-25 08:56:43,119 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:43,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:43,562 INFO L134 CoverageAnalysis]: Checked inductivity of 8385 backedges. 0 proven. 8385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:43,562 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:43,562 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131] total 131 [2018-07-25 08:56:43,563 INFO L451 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-07-25 08:56:43,564 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-07-25 08:56:43,565 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8646, Invalid=8646, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 08:56:43,565 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 132 states. [2018-07-25 08:56:43,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:43,870 INFO L93 Difference]: Finished difference Result 136 states and 136 transitions. [2018-07-25 08:56:43,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-07-25 08:56:43,871 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 132 [2018-07-25 08:56:43,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:43,871 INFO L225 Difference]: With dead ends: 136 [2018-07-25 08:56:43,871 INFO L226 Difference]: Without dead ends: 134 [2018-07-25 08:56:43,873 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8646, Invalid=8646, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 08:56:43,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-07-25 08:56:43,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2018-07-25 08:56:43,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-07-25 08:56:43,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 134 transitions. [2018-07-25 08:56:43,877 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 134 transitions. Word has length 132 [2018-07-25 08:56:43,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:43,877 INFO L472 AbstractCegarLoop]: Abstraction has 134 states and 134 transitions. [2018-07-25 08:56:43,878 INFO L473 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-07-25 08:56:43,878 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 134 transitions. [2018-07-25 08:56:43,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-07-25 08:56:43,878 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:43,878 INFO L354 BasicCegarLoop]: trace histogram [130, 1, 1, 1] [2018-07-25 08:56:43,879 INFO L415 AbstractCegarLoop]: === Iteration 131 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:43,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1786648096, now seen corresponding path program 130 times [2018-07-25 08:56:43,879 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:43,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:44,387 INFO L134 CoverageAnalysis]: Checked inductivity of 8515 backedges. 0 proven. 8515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:44,387 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:44,388 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [132] total 132 [2018-07-25 08:56:44,388 INFO L451 AbstractCegarLoop]: Interpolant automaton has 133 states [2018-07-25 08:56:44,389 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2018-07-25 08:56:44,390 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8778, Invalid=8778, Unknown=0, NotChecked=0, Total=17556 [2018-07-25 08:56:44,390 INFO L87 Difference]: Start difference. First operand 134 states and 134 transitions. Second operand 133 states. [2018-07-25 08:56:44,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:44,557 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-07-25 08:56:44,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-07-25 08:56:44,557 INFO L78 Accepts]: Start accepts. Automaton has 133 states. Word has length 133 [2018-07-25 08:56:44,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:44,558 INFO L225 Difference]: With dead ends: 137 [2018-07-25 08:56:44,558 INFO L226 Difference]: Without dead ends: 135 [2018-07-25 08:56:44,559 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=8778, Invalid=8778, Unknown=0, NotChecked=0, Total=17556 [2018-07-25 08:56:44,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-07-25 08:56:44,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-07-25 08:56:44,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-07-25 08:56:44,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-07-25 08:56:44,563 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 133 [2018-07-25 08:56:44,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:44,563 INFO L472 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-07-25 08:56:44,563 INFO L473 AbstractCegarLoop]: Interpolant automaton has 133 states. [2018-07-25 08:56:44,563 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-07-25 08:56:44,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-07-25 08:56:44,564 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:44,564 INFO L354 BasicCegarLoop]: trace histogram [131, 1, 1, 1] [2018-07-25 08:56:44,564 INFO L415 AbstractCegarLoop]: === Iteration 132 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:44,564 INFO L82 PathProgramCache]: Analyzing trace with hash 448481926, now seen corresponding path program 131 times [2018-07-25 08:56:44,565 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:44,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:44,988 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 0 proven. 8646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:44,989 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:44,989 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [133] total 133 [2018-07-25 08:56:44,989 INFO L451 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-07-25 08:56:44,990 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-07-25 08:56:44,991 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8911, Invalid=8911, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 08:56:44,991 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 134 states. [2018-07-25 08:56:45,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:45,173 INFO L93 Difference]: Finished difference Result 138 states and 138 transitions. [2018-07-25 08:56:45,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-07-25 08:56:45,173 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 134 [2018-07-25 08:56:45,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:45,174 INFO L225 Difference]: With dead ends: 138 [2018-07-25 08:56:45,174 INFO L226 Difference]: Without dead ends: 136 [2018-07-25 08:56:45,175 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8911, Invalid=8911, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 08:56:45,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2018-07-25 08:56:45,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2018-07-25 08:56:45,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-07-25 08:56:45,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 136 transitions. [2018-07-25 08:56:45,178 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 136 transitions. Word has length 134 [2018-07-25 08:56:45,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:45,178 INFO L472 AbstractCegarLoop]: Abstraction has 136 states and 136 transitions. [2018-07-25 08:56:45,178 INFO L473 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-07-25 08:56:45,178 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 136 transitions. [2018-07-25 08:56:45,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-07-25 08:56:45,179 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:45,179 INFO L354 BasicCegarLoop]: trace histogram [132, 1, 1, 1] [2018-07-25 08:56:45,179 INFO L415 AbstractCegarLoop]: === Iteration 133 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:45,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1018035872, now seen corresponding path program 132 times [2018-07-25 08:56:45,179 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:45,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:45,617 INFO L134 CoverageAnalysis]: Checked inductivity of 8778 backedges. 0 proven. 8778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:45,617 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:45,617 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [134] total 134 [2018-07-25 08:56:45,617 INFO L451 AbstractCegarLoop]: Interpolant automaton has 135 states [2018-07-25 08:56:45,619 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2018-07-25 08:56:45,619 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9045, Invalid=9045, Unknown=0, NotChecked=0, Total=18090 [2018-07-25 08:56:45,619 INFO L87 Difference]: Start difference. First operand 136 states and 136 transitions. Second operand 135 states. [2018-07-25 08:56:45,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:45,751 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2018-07-25 08:56:45,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2018-07-25 08:56:45,752 INFO L78 Accepts]: Start accepts. Automaton has 135 states. Word has length 135 [2018-07-25 08:56:45,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:45,752 INFO L225 Difference]: With dead ends: 139 [2018-07-25 08:56:45,752 INFO L226 Difference]: Without dead ends: 137 [2018-07-25 08:56:45,753 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9045, Invalid=9045, Unknown=0, NotChecked=0, Total=18090 [2018-07-25 08:56:45,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-07-25 08:56:45,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-07-25 08:56:45,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-07-25 08:56:45,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 137 transitions. [2018-07-25 08:56:45,756 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 137 transitions. Word has length 135 [2018-07-25 08:56:45,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:45,756 INFO L472 AbstractCegarLoop]: Abstraction has 137 states and 137 transitions. [2018-07-25 08:56:45,756 INFO L473 AbstractCegarLoop]: Interpolant automaton has 135 states. [2018-07-25 08:56:45,756 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 137 transitions. [2018-07-25 08:56:45,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-07-25 08:56:45,757 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:45,757 INFO L354 BasicCegarLoop]: trace histogram [133, 1, 1, 1] [2018-07-25 08:56:45,757 INFO L415 AbstractCegarLoop]: === Iteration 134 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:45,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1494339014, now seen corresponding path program 133 times [2018-07-25 08:56:45,758 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:45,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:46,218 INFO L134 CoverageAnalysis]: Checked inductivity of 8911 backedges. 0 proven. 8911 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:46,218 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:46,219 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [135] total 135 [2018-07-25 08:56:46,219 INFO L451 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-07-25 08:56:46,220 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-07-25 08:56:46,221 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9180, Invalid=9180, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 08:56:46,221 INFO L87 Difference]: Start difference. First operand 137 states and 137 transitions. Second operand 136 states. [2018-07-25 08:56:46,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:46,391 INFO L93 Difference]: Finished difference Result 140 states and 140 transitions. [2018-07-25 08:56:46,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-07-25 08:56:46,391 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 136 [2018-07-25 08:56:46,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:46,392 INFO L225 Difference]: With dead ends: 140 [2018-07-25 08:56:46,392 INFO L226 Difference]: Without dead ends: 138 [2018-07-25 08:56:46,393 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9180, Invalid=9180, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 08:56:46,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-07-25 08:56:46,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2018-07-25 08:56:46,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-07-25 08:56:46,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 138 transitions. [2018-07-25 08:56:46,397 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 138 transitions. Word has length 136 [2018-07-25 08:56:46,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:46,397 INFO L472 AbstractCegarLoop]: Abstraction has 138 states and 138 transitions. [2018-07-25 08:56:46,397 INFO L473 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-07-25 08:56:46,397 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 138 transitions. [2018-07-25 08:56:46,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-07-25 08:56:46,398 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:46,398 INFO L354 BasicCegarLoop]: trace histogram [134, 1, 1, 1] [2018-07-25 08:56:46,398 INFO L415 AbstractCegarLoop]: === Iteration 135 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:46,398 INFO L82 PathProgramCache]: Analyzing trace with hash -920132768, now seen corresponding path program 134 times [2018-07-25 08:56:46,399 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:46,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:46,889 INFO L134 CoverageAnalysis]: Checked inductivity of 9045 backedges. 0 proven. 9045 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:46,890 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:46,890 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [136] total 136 [2018-07-25 08:56:46,890 INFO L451 AbstractCegarLoop]: Interpolant automaton has 137 states [2018-07-25 08:56:46,891 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2018-07-25 08:56:46,892 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9316, Invalid=9316, Unknown=0, NotChecked=0, Total=18632 [2018-07-25 08:56:46,892 INFO L87 Difference]: Start difference. First operand 138 states and 138 transitions. Second operand 137 states. [2018-07-25 08:56:47,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:47,148 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-07-25 08:56:47,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-07-25 08:56:47,148 INFO L78 Accepts]: Start accepts. Automaton has 137 states. Word has length 137 [2018-07-25 08:56:47,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:47,148 INFO L225 Difference]: With dead ends: 141 [2018-07-25 08:56:47,149 INFO L226 Difference]: Without dead ends: 139 [2018-07-25 08:56:47,149 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9316, Invalid=9316, Unknown=0, NotChecked=0, Total=18632 [2018-07-25 08:56:47,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-07-25 08:56:47,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-07-25 08:56:47,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-07-25 08:56:47,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2018-07-25 08:56:47,152 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 137 [2018-07-25 08:56:47,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:47,153 INFO L472 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2018-07-25 08:56:47,153 INFO L473 AbstractCegarLoop]: Interpolant automaton has 137 states. [2018-07-25 08:56:47,153 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2018-07-25 08:56:47,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-07-25 08:56:47,154 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:47,154 INFO L354 BasicCegarLoop]: trace histogram [135, 1, 1, 1] [2018-07-25 08:56:47,154 INFO L415 AbstractCegarLoop]: === Iteration 136 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:47,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1540653318, now seen corresponding path program 135 times [2018-07-25 08:56:47,154 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:47,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:48,075 INFO L134 CoverageAnalysis]: Checked inductivity of 9180 backedges. 0 proven. 9180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:48,075 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:48,075 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [137] total 137 [2018-07-25 08:56:48,076 INFO L451 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-07-25 08:56:48,078 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-07-25 08:56:48,079 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9453, Invalid=9453, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 08:56:48,079 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 138 states. [2018-07-25 08:56:48,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:48,309 INFO L93 Difference]: Finished difference Result 142 states and 142 transitions. [2018-07-25 08:56:48,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2018-07-25 08:56:48,310 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 138 [2018-07-25 08:56:48,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:48,310 INFO L225 Difference]: With dead ends: 142 [2018-07-25 08:56:48,310 INFO L226 Difference]: Without dead ends: 140 [2018-07-25 08:56:48,311 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9453, Invalid=9453, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 08:56:48,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-07-25 08:56:48,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2018-07-25 08:56:48,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-07-25 08:56:48,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 140 transitions. [2018-07-25 08:56:48,314 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 140 transitions. Word has length 138 [2018-07-25 08:56:48,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:48,314 INFO L472 AbstractCegarLoop]: Abstraction has 140 states and 140 transitions. [2018-07-25 08:56:48,314 INFO L473 AbstractCegarLoop]: Interpolant automaton has 138 states. [2018-07-25 08:56:48,314 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 140 transitions. [2018-07-25 08:56:48,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-07-25 08:56:48,315 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:48,315 INFO L354 BasicCegarLoop]: trace histogram [136, 1, 1, 1] [2018-07-25 08:56:48,315 INFO L415 AbstractCegarLoop]: === Iteration 137 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:48,315 INFO L82 PathProgramCache]: Analyzing trace with hash 515610656, now seen corresponding path program 136 times [2018-07-25 08:56:48,316 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:48,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:48,783 INFO L134 CoverageAnalysis]: Checked inductivity of 9316 backedges. 0 proven. 9316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:48,783 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:48,783 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [138] total 138 [2018-07-25 08:56:48,783 INFO L451 AbstractCegarLoop]: Interpolant automaton has 139 states [2018-07-25 08:56:48,785 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2018-07-25 08:56:48,785 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2018-07-25 08:56:48,786 INFO L87 Difference]: Start difference. First operand 140 states and 140 transitions. Second operand 139 states. [2018-07-25 08:56:48,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:48,869 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-07-25 08:56:48,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-07-25 08:56:48,869 INFO L78 Accepts]: Start accepts. Automaton has 139 states. Word has length 139 [2018-07-25 08:56:48,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:48,870 INFO L225 Difference]: With dead ends: 143 [2018-07-25 08:56:48,870 INFO L226 Difference]: Without dead ends: 141 [2018-07-25 08:56:48,871 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2018-07-25 08:56:48,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-07-25 08:56:48,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-07-25 08:56:48,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-07-25 08:56:48,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2018-07-25 08:56:48,873 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 139 [2018-07-25 08:56:48,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:48,873 INFO L472 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2018-07-25 08:56:48,873 INFO L473 AbstractCegarLoop]: Interpolant automaton has 139 states. [2018-07-25 08:56:48,873 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2018-07-25 08:56:48,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-07-25 08:56:48,874 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:48,874 INFO L354 BasicCegarLoop]: trace histogram [137, 1, 1, 1] [2018-07-25 08:56:48,874 INFO L415 AbstractCegarLoop]: === Iteration 138 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:48,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1195940794, now seen corresponding path program 137 times [2018-07-25 08:56:48,874 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:48,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:49,369 INFO L134 CoverageAnalysis]: Checked inductivity of 9453 backedges. 0 proven. 9453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:49,369 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:49,369 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [139] total 139 [2018-07-25 08:56:49,369 INFO L451 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-07-25 08:56:49,371 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-07-25 08:56:49,372 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9730, Invalid=9730, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 08:56:49,373 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 140 states. [2018-07-25 08:56:49,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:49,626 INFO L93 Difference]: Finished difference Result 144 states and 144 transitions. [2018-07-25 08:56:49,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-07-25 08:56:49,626 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 140 [2018-07-25 08:56:49,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:49,626 INFO L225 Difference]: With dead ends: 144 [2018-07-25 08:56:49,626 INFO L226 Difference]: Without dead ends: 142 [2018-07-25 08:56:49,627 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9730, Invalid=9730, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 08:56:49,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2018-07-25 08:56:49,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2018-07-25 08:56:49,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-07-25 08:56:49,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 142 transitions. [2018-07-25 08:56:49,629 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 142 transitions. Word has length 140 [2018-07-25 08:56:49,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:49,629 INFO L472 AbstractCegarLoop]: Abstraction has 142 states and 142 transitions. [2018-07-25 08:56:49,629 INFO L473 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-07-25 08:56:49,630 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 142 transitions. [2018-07-25 08:56:49,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-07-25 08:56:49,630 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:49,630 INFO L354 BasicCegarLoop]: trace histogram [138, 1, 1, 1] [2018-07-25 08:56:49,630 INFO L415 AbstractCegarLoop]: === Iteration 139 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:49,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1580539104, now seen corresponding path program 138 times [2018-07-25 08:56:49,630 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:49,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:50,117 INFO L134 CoverageAnalysis]: Checked inductivity of 9591 backedges. 0 proven. 9591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:50,117 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:50,117 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [140] total 140 [2018-07-25 08:56:50,117 INFO L451 AbstractCegarLoop]: Interpolant automaton has 141 states [2018-07-25 08:56:50,119 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2018-07-25 08:56:50,119 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9870, Invalid=9870, Unknown=0, NotChecked=0, Total=19740 [2018-07-25 08:56:50,120 INFO L87 Difference]: Start difference. First operand 142 states and 142 transitions. Second operand 141 states. [2018-07-25 08:56:50,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:50,332 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-07-25 08:56:50,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2018-07-25 08:56:50,332 INFO L78 Accepts]: Start accepts. Automaton has 141 states. Word has length 141 [2018-07-25 08:56:50,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:50,333 INFO L225 Difference]: With dead ends: 145 [2018-07-25 08:56:50,333 INFO L226 Difference]: Without dead ends: 143 [2018-07-25 08:56:50,334 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9870, Invalid=9870, Unknown=0, NotChecked=0, Total=19740 [2018-07-25 08:56:50,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-07-25 08:56:50,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-07-25 08:56:50,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-07-25 08:56:50,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2018-07-25 08:56:50,337 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 141 [2018-07-25 08:56:50,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:50,337 INFO L472 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2018-07-25 08:56:50,337 INFO L473 AbstractCegarLoop]: Interpolant automaton has 141 states. [2018-07-25 08:56:50,337 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2018-07-25 08:56:50,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-07-25 08:56:50,338 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:50,338 INFO L354 BasicCegarLoop]: trace histogram [139, 1, 1, 1] [2018-07-25 08:56:50,338 INFO L415 AbstractCegarLoop]: === Iteration 140 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:50,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1752070022, now seen corresponding path program 139 times [2018-07-25 08:56:50,339 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:50,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:50,802 INFO L134 CoverageAnalysis]: Checked inductivity of 9730 backedges. 0 proven. 9730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:50,802 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:50,802 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [141] total 141 [2018-07-25 08:56:50,803 INFO L451 AbstractCegarLoop]: Interpolant automaton has 142 states [2018-07-25 08:56:50,804 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2018-07-25 08:56:50,804 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10011, Invalid=10011, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 08:56:50,804 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand 142 states. [2018-07-25 08:56:51,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:51,056 INFO L93 Difference]: Finished difference Result 146 states and 146 transitions. [2018-07-25 08:56:51,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-07-25 08:56:51,056 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 142 [2018-07-25 08:56:51,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:51,056 INFO L225 Difference]: With dead ends: 146 [2018-07-25 08:56:51,056 INFO L226 Difference]: Without dead ends: 144 [2018-07-25 08:56:51,057 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10011, Invalid=10011, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 08:56:51,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-07-25 08:56:51,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2018-07-25 08:56:51,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-07-25 08:56:51,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 144 transitions. [2018-07-25 08:56:51,060 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 144 transitions. Word has length 142 [2018-07-25 08:56:51,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:51,060 INFO L472 AbstractCegarLoop]: Abstraction has 144 states and 144 transitions. [2018-07-25 08:56:51,060 INFO L473 AbstractCegarLoop]: Interpolant automaton has 142 states. [2018-07-25 08:56:51,060 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 144 transitions. [2018-07-25 08:56:51,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-07-25 08:56:51,061 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:51,061 INFO L354 BasicCegarLoop]: trace histogram [140, 1, 1, 1] [2018-07-25 08:56:51,061 INFO L415 AbstractCegarLoop]: === Iteration 141 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:51,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1520406112, now seen corresponding path program 140 times [2018-07-25 08:56:51,061 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:51,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:51,518 INFO L134 CoverageAnalysis]: Checked inductivity of 9870 backedges. 0 proven. 9870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:51,518 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:51,518 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [142] total 142 [2018-07-25 08:56:51,518 INFO L451 AbstractCegarLoop]: Interpolant automaton has 143 states [2018-07-25 08:56:51,519 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2018-07-25 08:56:51,520 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10153, Invalid=10153, Unknown=0, NotChecked=0, Total=20306 [2018-07-25 08:56:51,520 INFO L87 Difference]: Start difference. First operand 144 states and 144 transitions. Second operand 143 states. [2018-07-25 08:56:51,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:51,704 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2018-07-25 08:56:51,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2018-07-25 08:56:51,704 INFO L78 Accepts]: Start accepts. Automaton has 143 states. Word has length 143 [2018-07-25 08:56:51,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:51,705 INFO L225 Difference]: With dead ends: 147 [2018-07-25 08:56:51,705 INFO L226 Difference]: Without dead ends: 145 [2018-07-25 08:56:51,705 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10153, Invalid=10153, Unknown=0, NotChecked=0, Total=20306 [2018-07-25 08:56:51,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-07-25 08:56:51,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-07-25 08:56:51,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-07-25 08:56:51,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2018-07-25 08:56:51,707 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 143 [2018-07-25 08:56:51,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:51,707 INFO L472 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2018-07-25 08:56:51,708 INFO L473 AbstractCegarLoop]: Interpolant automaton has 143 states. [2018-07-25 08:56:51,708 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2018-07-25 08:56:51,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-07-25 08:56:51,708 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:51,708 INFO L354 BasicCegarLoop]: trace histogram [141, 1, 1, 1] [2018-07-25 08:56:51,708 INFO L415 AbstractCegarLoop]: === Iteration 142 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:51,709 INFO L82 PathProgramCache]: Analyzing trace with hash 112048838, now seen corresponding path program 141 times [2018-07-25 08:56:51,709 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:51,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:52,156 INFO L134 CoverageAnalysis]: Checked inductivity of 10011 backedges. 0 proven. 10011 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:52,157 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:52,157 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [143] total 143 [2018-07-25 08:56:52,157 INFO L451 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-07-25 08:56:52,158 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-07-25 08:56:52,158 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10296, Invalid=10296, Unknown=0, NotChecked=0, Total=20592 [2018-07-25 08:56:52,158 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand 144 states. [2018-07-25 08:56:52,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:52,251 INFO L93 Difference]: Finished difference Result 148 states and 148 transitions. [2018-07-25 08:56:52,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2018-07-25 08:56:52,251 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 144 [2018-07-25 08:56:52,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:52,251 INFO L225 Difference]: With dead ends: 148 [2018-07-25 08:56:52,251 INFO L226 Difference]: Without dead ends: 146 [2018-07-25 08:56:52,252 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10296, Invalid=10296, Unknown=0, NotChecked=0, Total=20592 [2018-07-25 08:56:52,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-07-25 08:56:52,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2018-07-25 08:56:52,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-07-25 08:56:52,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 146 transitions. [2018-07-25 08:56:52,254 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 146 transitions. Word has length 144 [2018-07-25 08:56:52,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:52,254 INFO L472 AbstractCegarLoop]: Abstraction has 146 states and 146 transitions. [2018-07-25 08:56:52,254 INFO L473 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-07-25 08:56:52,254 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 146 transitions. [2018-07-25 08:56:52,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-07-25 08:56:52,255 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:52,255 INFO L354 BasicCegarLoop]: trace histogram [142, 1, 1, 1] [2018-07-25 08:56:52,255 INFO L415 AbstractCegarLoop]: === Iteration 143 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:52,255 INFO L82 PathProgramCache]: Analyzing trace with hash -821455264, now seen corresponding path program 142 times [2018-07-25 08:56:52,255 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:52,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:52,724 INFO L134 CoverageAnalysis]: Checked inductivity of 10153 backedges. 0 proven. 10153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:52,724 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:52,724 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [144] total 144 [2018-07-25 08:56:52,725 INFO L451 AbstractCegarLoop]: Interpolant automaton has 145 states [2018-07-25 08:56:52,726 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2018-07-25 08:56:52,726 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10440, Invalid=10440, Unknown=0, NotChecked=0, Total=20880 [2018-07-25 08:56:52,726 INFO L87 Difference]: Start difference. First operand 146 states and 146 transitions. Second operand 145 states. [2018-07-25 08:56:52,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:52,879 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-07-25 08:56:52,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2018-07-25 08:56:52,879 INFO L78 Accepts]: Start accepts. Automaton has 145 states. Word has length 145 [2018-07-25 08:56:52,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:52,879 INFO L225 Difference]: With dead ends: 149 [2018-07-25 08:56:52,879 INFO L226 Difference]: Without dead ends: 147 [2018-07-25 08:56:52,880 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10440, Invalid=10440, Unknown=0, NotChecked=0, Total=20880 [2018-07-25 08:56:52,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-07-25 08:56:52,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-07-25 08:56:52,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-07-25 08:56:52,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2018-07-25 08:56:52,882 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 145 [2018-07-25 08:56:52,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:52,882 INFO L472 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2018-07-25 08:56:52,882 INFO L473 AbstractCegarLoop]: Interpolant automaton has 145 states. [2018-07-25 08:56:52,882 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2018-07-25 08:56:52,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-07-25 08:56:52,883 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:52,883 INFO L354 BasicCegarLoop]: trace histogram [143, 1, 1, 1] [2018-07-25 08:56:52,883 INFO L415 AbstractCegarLoop]: === Iteration 144 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:52,883 INFO L82 PathProgramCache]: Analyzing trace with hash 304688646, now seen corresponding path program 143 times [2018-07-25 08:56:52,883 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:52,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:53,362 INFO L134 CoverageAnalysis]: Checked inductivity of 10296 backedges. 0 proven. 10296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:53,362 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:53,362 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [145] total 145 [2018-07-25 08:56:53,362 INFO L451 AbstractCegarLoop]: Interpolant automaton has 146 states [2018-07-25 08:56:53,363 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2018-07-25 08:56:53,364 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10585, Invalid=10585, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 08:56:53,364 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 146 states. [2018-07-25 08:56:53,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:53,646 INFO L93 Difference]: Finished difference Result 150 states and 150 transitions. [2018-07-25 08:56:53,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2018-07-25 08:56:53,646 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 146 [2018-07-25 08:56:53,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:53,647 INFO L225 Difference]: With dead ends: 150 [2018-07-25 08:56:53,647 INFO L226 Difference]: Without dead ends: 148 [2018-07-25 08:56:53,647 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10585, Invalid=10585, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 08:56:53,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-07-25 08:56:53,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2018-07-25 08:56:53,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-07-25 08:56:53,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 148 transitions. [2018-07-25 08:56:53,649 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 148 transitions. Word has length 146 [2018-07-25 08:56:53,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:53,650 INFO L472 AbstractCegarLoop]: Abstraction has 148 states and 148 transitions. [2018-07-25 08:56:53,650 INFO L473 AbstractCegarLoop]: Interpolant automaton has 146 states. [2018-07-25 08:56:53,650 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 148 transitions. [2018-07-25 08:56:53,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-07-25 08:56:53,650 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:53,650 INFO L354 BasicCegarLoop]: trace histogram [144, 1, 1, 1] [2018-07-25 08:56:53,650 INFO L415 AbstractCegarLoop]: === Iteration 145 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:53,650 INFO L82 PathProgramCache]: Analyzing trace with hash 855411488, now seen corresponding path program 144 times [2018-07-25 08:56:53,650 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:53,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:54,250 INFO L134 CoverageAnalysis]: Checked inductivity of 10440 backedges. 0 proven. 10440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:54,250 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:54,250 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [146] total 146 [2018-07-25 08:56:54,250 INFO L451 AbstractCegarLoop]: Interpolant automaton has 147 states [2018-07-25 08:56:54,251 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2018-07-25 08:56:54,252 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10731, Invalid=10731, Unknown=0, NotChecked=0, Total=21462 [2018-07-25 08:56:54,252 INFO L87 Difference]: Start difference. First operand 148 states and 148 transitions. Second operand 147 states. [2018-07-25 08:56:54,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:54,487 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2018-07-25 08:56:54,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2018-07-25 08:56:54,487 INFO L78 Accepts]: Start accepts. Automaton has 147 states. Word has length 147 [2018-07-25 08:56:54,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:54,488 INFO L225 Difference]: With dead ends: 151 [2018-07-25 08:56:54,488 INFO L226 Difference]: Without dead ends: 149 [2018-07-25 08:56:54,488 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=10731, Invalid=10731, Unknown=0, NotChecked=0, Total=21462 [2018-07-25 08:56:54,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-07-25 08:56:54,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-07-25 08:56:54,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-07-25 08:56:54,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 149 transitions. [2018-07-25 08:56:54,490 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 149 transitions. Word has length 147 [2018-07-25 08:56:54,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:54,491 INFO L472 AbstractCegarLoop]: Abstraction has 149 states and 149 transitions. [2018-07-25 08:56:54,491 INFO L473 AbstractCegarLoop]: Interpolant automaton has 147 states. [2018-07-25 08:56:54,491 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 149 transitions. [2018-07-25 08:56:54,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-07-25 08:56:54,491 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:54,491 INFO L354 BasicCegarLoop]: trace histogram [145, 1, 1, 1] [2018-07-25 08:56:54,491 INFO L415 AbstractCegarLoop]: === Iteration 146 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:54,492 INFO L82 PathProgramCache]: Analyzing trace with hash 747950406, now seen corresponding path program 145 times [2018-07-25 08:56:54,492 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:54,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:54,973 INFO L134 CoverageAnalysis]: Checked inductivity of 10585 backedges. 0 proven. 10585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:54,974 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:54,974 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [147] total 147 [2018-07-25 08:56:54,974 INFO L451 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-07-25 08:56:54,975 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-07-25 08:56:54,975 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10878, Invalid=10878, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 08:56:54,976 INFO L87 Difference]: Start difference. First operand 149 states and 149 transitions. Second operand 148 states. [2018-07-25 08:56:55,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:55,224 INFO L93 Difference]: Finished difference Result 152 states and 152 transitions. [2018-07-25 08:56:55,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-07-25 08:56:55,224 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 148 [2018-07-25 08:56:55,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:55,224 INFO L225 Difference]: With dead ends: 152 [2018-07-25 08:56:55,225 INFO L226 Difference]: Without dead ends: 150 [2018-07-25 08:56:55,226 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10878, Invalid=10878, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 08:56:55,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-07-25 08:56:55,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2018-07-25 08:56:55,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-07-25 08:56:55,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 150 transitions. [2018-07-25 08:56:55,229 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 150 transitions. Word has length 148 [2018-07-25 08:56:55,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:55,229 INFO L472 AbstractCegarLoop]: Abstraction has 150 states and 150 transitions. [2018-07-25 08:56:55,229 INFO L473 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-07-25 08:56:55,229 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 150 transitions. [2018-07-25 08:56:55,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-07-25 08:56:55,230 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:55,230 INFO L354 BasicCegarLoop]: trace histogram [146, 1, 1, 1] [2018-07-25 08:56:55,230 INFO L415 AbstractCegarLoop]: === Iteration 147 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:55,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1711624160, now seen corresponding path program 146 times [2018-07-25 08:56:55,230 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:55,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:55,780 INFO L134 CoverageAnalysis]: Checked inductivity of 10731 backedges. 0 proven. 10731 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:55,780 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:55,780 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [148] total 148 [2018-07-25 08:56:55,780 INFO L451 AbstractCegarLoop]: Interpolant automaton has 149 states [2018-07-25 08:56:55,782 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2018-07-25 08:56:55,782 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11026, Invalid=11026, Unknown=0, NotChecked=0, Total=22052 [2018-07-25 08:56:55,782 INFO L87 Difference]: Start difference. First operand 150 states and 150 transitions. Second operand 149 states. [2018-07-25 08:56:56,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:56,053 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2018-07-25 08:56:56,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2018-07-25 08:56:56,053 INFO L78 Accepts]: Start accepts. Automaton has 149 states. Word has length 149 [2018-07-25 08:56:56,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:56,054 INFO L225 Difference]: With dead ends: 153 [2018-07-25 08:56:56,054 INFO L226 Difference]: Without dead ends: 151 [2018-07-25 08:56:56,055 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11026, Invalid=11026, Unknown=0, NotChecked=0, Total=22052 [2018-07-25 08:56:56,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-07-25 08:56:56,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-07-25 08:56:56,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-07-25 08:56:56,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2018-07-25 08:56:56,058 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 149 [2018-07-25 08:56:56,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:56,058 INFO L472 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2018-07-25 08:56:56,058 INFO L473 AbstractCegarLoop]: Interpolant automaton has 149 states. [2018-07-25 08:56:56,058 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2018-07-25 08:56:56,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-07-25 08:56:56,059 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:56,059 INFO L354 BasicCegarLoop]: trace histogram [147, 1, 1, 1] [2018-07-25 08:56:56,059 INFO L415 AbstractCegarLoop]: === Iteration 148 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:56,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1520739462, now seen corresponding path program 147 times [2018-07-25 08:56:56,060 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:56,590 INFO L134 CoverageAnalysis]: Checked inductivity of 10878 backedges. 0 proven. 10878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:56,591 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:56,591 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [149] total 149 [2018-07-25 08:56:56,591 INFO L451 AbstractCegarLoop]: Interpolant automaton has 150 states [2018-07-25 08:56:56,592 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2018-07-25 08:56:56,593 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11175, Invalid=11175, Unknown=0, NotChecked=0, Total=22350 [2018-07-25 08:56:56,593 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 150 states. [2018-07-25 08:56:56,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:56,897 INFO L93 Difference]: Finished difference Result 154 states and 154 transitions. [2018-07-25 08:56:56,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2018-07-25 08:56:56,898 INFO L78 Accepts]: Start accepts. Automaton has 150 states. Word has length 150 [2018-07-25 08:56:56,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:56,898 INFO L225 Difference]: With dead ends: 154 [2018-07-25 08:56:56,898 INFO L226 Difference]: Without dead ends: 152 [2018-07-25 08:56:56,899 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11175, Invalid=11175, Unknown=0, NotChecked=0, Total=22350 [2018-07-25 08:56:56,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2018-07-25 08:56:56,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2018-07-25 08:56:56,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2018-07-25 08:56:56,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 152 transitions. [2018-07-25 08:56:56,902 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 152 transitions. Word has length 150 [2018-07-25 08:56:56,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:56,903 INFO L472 AbstractCegarLoop]: Abstraction has 152 states and 152 transitions. [2018-07-25 08:56:56,903 INFO L473 AbstractCegarLoop]: Interpolant automaton has 150 states. [2018-07-25 08:56:56,903 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 152 transitions. [2018-07-25 08:56:56,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-07-25 08:56:56,903 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:56,904 INFO L354 BasicCegarLoop]: trace histogram [148, 1, 1, 1] [2018-07-25 08:56:56,904 INFO L415 AbstractCegarLoop]: === Iteration 149 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:56,904 INFO L82 PathProgramCache]: Analyzing trace with hash -101718880, now seen corresponding path program 148 times [2018-07-25 08:56:56,904 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:56,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:57,449 INFO L134 CoverageAnalysis]: Checked inductivity of 11026 backedges. 0 proven. 11026 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:57,449 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:57,449 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [150] total 150 [2018-07-25 08:56:57,449 INFO L451 AbstractCegarLoop]: Interpolant automaton has 151 states [2018-07-25 08:56:57,451 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2018-07-25 08:56:57,452 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11325, Invalid=11325, Unknown=0, NotChecked=0, Total=22650 [2018-07-25 08:56:57,452 INFO L87 Difference]: Start difference. First operand 152 states and 152 transitions. Second operand 151 states. [2018-07-25 08:56:57,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:57,782 INFO L93 Difference]: Finished difference Result 155 states and 155 transitions. [2018-07-25 08:56:57,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2018-07-25 08:56:57,782 INFO L78 Accepts]: Start accepts. Automaton has 151 states. Word has length 151 [2018-07-25 08:56:57,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:57,783 INFO L225 Difference]: With dead ends: 155 [2018-07-25 08:56:57,783 INFO L226 Difference]: Without dead ends: 153 [2018-07-25 08:56:57,784 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11325, Invalid=11325, Unknown=0, NotChecked=0, Total=22650 [2018-07-25 08:56:57,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-07-25 08:56:57,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-07-25 08:56:57,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-07-25 08:56:57,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 153 transitions. [2018-07-25 08:56:57,787 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 153 transitions. Word has length 151 [2018-07-25 08:56:57,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:57,787 INFO L472 AbstractCegarLoop]: Abstraction has 153 states and 153 transitions. [2018-07-25 08:56:57,787 INFO L473 AbstractCegarLoop]: Interpolant automaton has 151 states. [2018-07-25 08:56:57,788 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 153 transitions. [2018-07-25 08:56:57,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-07-25 08:56:57,788 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:57,788 INFO L354 BasicCegarLoop]: trace histogram [149, 1, 1, 1] [2018-07-25 08:56:57,788 INFO L415 AbstractCegarLoop]: === Iteration 150 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:57,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1141680070, now seen corresponding path program 149 times [2018-07-25 08:56:57,789 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:57,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:58,478 INFO L134 CoverageAnalysis]: Checked inductivity of 11175 backedges. 0 proven. 11175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:58,478 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:58,478 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [151] total 151 [2018-07-25 08:56:58,479 INFO L451 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-07-25 08:56:58,480 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-07-25 08:56:58,481 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11476, Invalid=11476, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 08:56:58,481 INFO L87 Difference]: Start difference. First operand 153 states and 153 transitions. Second operand 152 states. [2018-07-25 08:56:58,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:58,813 INFO L93 Difference]: Finished difference Result 156 states and 156 transitions. [2018-07-25 08:56:58,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2018-07-25 08:56:58,813 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 152 [2018-07-25 08:56:58,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:58,814 INFO L225 Difference]: With dead ends: 156 [2018-07-25 08:56:58,814 INFO L226 Difference]: Without dead ends: 154 [2018-07-25 08:56:58,815 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11476, Invalid=11476, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 08:56:58,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-07-25 08:56:58,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2018-07-25 08:56:58,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-07-25 08:56:58,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 154 transitions. [2018-07-25 08:56:58,817 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 154 transitions. Word has length 152 [2018-07-25 08:56:58,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:58,817 INFO L472 AbstractCegarLoop]: Abstraction has 154 states and 154 transitions. [2018-07-25 08:56:58,817 INFO L473 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-07-25 08:56:58,817 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 154 transitions. [2018-07-25 08:56:58,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-07-25 08:56:58,817 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:58,817 INFO L354 BasicCegarLoop]: trace histogram [150, 1, 1, 1] [2018-07-25 08:56:58,818 INFO L415 AbstractCegarLoop]: === Iteration 151 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:58,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1032341856, now seen corresponding path program 150 times [2018-07-25 08:56:58,818 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:58,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:59,325 INFO L134 CoverageAnalysis]: Checked inductivity of 11325 backedges. 0 proven. 11325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:59,325 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:59,325 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [152] total 152 [2018-07-25 08:56:59,326 INFO L451 AbstractCegarLoop]: Interpolant automaton has 153 states [2018-07-25 08:56:59,327 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants. [2018-07-25 08:56:59,328 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11628, Invalid=11628, Unknown=0, NotChecked=0, Total=23256 [2018-07-25 08:56:59,328 INFO L87 Difference]: Start difference. First operand 154 states and 154 transitions. Second operand 153 states. [2018-07-25 08:56:59,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:59,657 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-07-25 08:56:59,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2018-07-25 08:56:59,657 INFO L78 Accepts]: Start accepts. Automaton has 153 states. Word has length 153 [2018-07-25 08:56:59,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:59,657 INFO L225 Difference]: With dead ends: 157 [2018-07-25 08:56:59,657 INFO L226 Difference]: Without dead ends: 155 [2018-07-25 08:56:59,658 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11628, Invalid=11628, Unknown=0, NotChecked=0, Total=23256 [2018-07-25 08:56:59,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-07-25 08:56:59,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-07-25 08:56:59,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-07-25 08:56:59,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 155 transitions. [2018-07-25 08:56:59,661 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 155 transitions. Word has length 153 [2018-07-25 08:56:59,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:59,661 INFO L472 AbstractCegarLoop]: Abstraction has 155 states and 155 transitions. [2018-07-25 08:56:59,661 INFO L473 AbstractCegarLoop]: Interpolant automaton has 153 states. [2018-07-25 08:56:59,662 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 155 transitions. [2018-07-25 08:56:59,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-07-25 08:56:59,662 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:59,662 INFO L354 BasicCegarLoop]: trace histogram [151, 1, 1, 1] [2018-07-25 08:56:59,663 INFO L415 AbstractCegarLoop]: === Iteration 152 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:59,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1937824518, now seen corresponding path program 151 times [2018-07-25 08:56:59,663 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:59,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:00,192 INFO L134 CoverageAnalysis]: Checked inductivity of 11476 backedges. 0 proven. 11476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:00,192 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:00,192 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [153] total 153 [2018-07-25 08:57:00,193 INFO L451 AbstractCegarLoop]: Interpolant automaton has 154 states [2018-07-25 08:57:00,194 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2018-07-25 08:57:00,194 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11781, Invalid=11781, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 08:57:00,194 INFO L87 Difference]: Start difference. First operand 155 states and 155 transitions. Second operand 154 states. [2018-07-25 08:57:00,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:00,515 INFO L93 Difference]: Finished difference Result 158 states and 158 transitions. [2018-07-25 08:57:00,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2018-07-25 08:57:00,515 INFO L78 Accepts]: Start accepts. Automaton has 154 states. Word has length 154 [2018-07-25 08:57:00,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:00,515 INFO L225 Difference]: With dead ends: 158 [2018-07-25 08:57:00,515 INFO L226 Difference]: Without dead ends: 156 [2018-07-25 08:57:00,516 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11781, Invalid=11781, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 08:57:00,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-07-25 08:57:00,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2018-07-25 08:57:00,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-07-25 08:57:00,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 156 transitions. [2018-07-25 08:57:00,518 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 156 transitions. Word has length 154 [2018-07-25 08:57:00,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:00,519 INFO L472 AbstractCegarLoop]: Abstraction has 156 states and 156 transitions. [2018-07-25 08:57:00,519 INFO L473 AbstractCegarLoop]: Interpolant automaton has 154 states. [2018-07-25 08:57:00,519 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 156 transitions. [2018-07-25 08:57:00,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-07-25 08:57:00,519 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:00,519 INFO L354 BasicCegarLoop]: trace histogram [152, 1, 1, 1] [2018-07-25 08:57:00,520 INFO L415 AbstractCegarLoop]: === Iteration 153 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:00,520 INFO L82 PathProgramCache]: Analyzing trace with hash -56984032, now seen corresponding path program 152 times [2018-07-25 08:57:00,520 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:00,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:01,078 INFO L134 CoverageAnalysis]: Checked inductivity of 11628 backedges. 0 proven. 11628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:01,078 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:01,078 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [154] total 154 [2018-07-25 08:57:01,078 INFO L451 AbstractCegarLoop]: Interpolant automaton has 155 states [2018-07-25 08:57:01,079 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2018-07-25 08:57:01,080 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11935, Invalid=11935, Unknown=0, NotChecked=0, Total=23870 [2018-07-25 08:57:01,080 INFO L87 Difference]: Start difference. First operand 156 states and 156 transitions. Second operand 155 states. [2018-07-25 08:57:01,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:01,467 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2018-07-25 08:57:01,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2018-07-25 08:57:01,467 INFO L78 Accepts]: Start accepts. Automaton has 155 states. Word has length 155 [2018-07-25 08:57:01,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:01,467 INFO L225 Difference]: With dead ends: 159 [2018-07-25 08:57:01,468 INFO L226 Difference]: Without dead ends: 157 [2018-07-25 08:57:01,469 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11935, Invalid=11935, Unknown=0, NotChecked=0, Total=23870 [2018-07-25 08:57:01,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-07-25 08:57:01,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-07-25 08:57:01,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-07-25 08:57:01,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 157 transitions. [2018-07-25 08:57:01,472 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 157 transitions. Word has length 155 [2018-07-25 08:57:01,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:01,472 INFO L472 AbstractCegarLoop]: Abstraction has 157 states and 157 transitions. [2018-07-25 08:57:01,472 INFO L473 AbstractCegarLoop]: Interpolant automaton has 155 states. [2018-07-25 08:57:01,472 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 157 transitions. [2018-07-25 08:57:01,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-07-25 08:57:01,473 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:01,473 INFO L354 BasicCegarLoop]: trace histogram [153, 1, 1, 1] [2018-07-25 08:57:01,473 INFO L415 AbstractCegarLoop]: === Iteration 154 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:01,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1766506938, now seen corresponding path program 153 times [2018-07-25 08:57:01,473 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:01,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:02,217 INFO L134 CoverageAnalysis]: Checked inductivity of 11781 backedges. 0 proven. 11781 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:02,217 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:02,217 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [155] total 155 [2018-07-25 08:57:02,217 INFO L451 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-07-25 08:57:02,219 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-07-25 08:57:02,219 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12090, Invalid=12090, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 08:57:02,220 INFO L87 Difference]: Start difference. First operand 157 states and 157 transitions. Second operand 156 states. [2018-07-25 08:57:02,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:02,627 INFO L93 Difference]: Finished difference Result 160 states and 160 transitions. [2018-07-25 08:57:02,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2018-07-25 08:57:02,627 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 156 [2018-07-25 08:57:02,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:02,627 INFO L225 Difference]: With dead ends: 160 [2018-07-25 08:57:02,627 INFO L226 Difference]: Without dead ends: 158 [2018-07-25 08:57:02,628 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12090, Invalid=12090, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 08:57:02,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-07-25 08:57:02,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2018-07-25 08:57:02,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-07-25 08:57:02,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 158 transitions. [2018-07-25 08:57:02,631 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 158 transitions. Word has length 156 [2018-07-25 08:57:02,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:02,631 INFO L472 AbstractCegarLoop]: Abstraction has 158 states and 158 transitions. [2018-07-25 08:57:02,631 INFO L473 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-07-25 08:57:02,632 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 158 transitions. [2018-07-25 08:57:02,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-07-25 08:57:02,632 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:02,632 INFO L354 BasicCegarLoop]: trace histogram [154, 1, 1, 1] [2018-07-25 08:57:02,633 INFO L415 AbstractCegarLoop]: === Iteration 155 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:02,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1072857824, now seen corresponding path program 154 times [2018-07-25 08:57:02,633 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:02,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:03,262 INFO L134 CoverageAnalysis]: Checked inductivity of 11935 backedges. 0 proven. 11935 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:03,263 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:03,263 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [156] total 156 [2018-07-25 08:57:03,263 INFO L451 AbstractCegarLoop]: Interpolant automaton has 157 states [2018-07-25 08:57:03,264 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 157 interpolants. [2018-07-25 08:57:03,265 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12246, Invalid=12246, Unknown=0, NotChecked=0, Total=24492 [2018-07-25 08:57:03,265 INFO L87 Difference]: Start difference. First operand 158 states and 158 transitions. Second operand 157 states. [2018-07-25 08:57:03,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:03,726 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2018-07-25 08:57:03,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2018-07-25 08:57:03,726 INFO L78 Accepts]: Start accepts. Automaton has 157 states. Word has length 157 [2018-07-25 08:57:03,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:03,727 INFO L225 Difference]: With dead ends: 161 [2018-07-25 08:57:03,727 INFO L226 Difference]: Without dead ends: 159 [2018-07-25 08:57:03,728 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12246, Invalid=12246, Unknown=0, NotChecked=0, Total=24492 [2018-07-25 08:57:03,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-07-25 08:57:03,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-07-25 08:57:03,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-07-25 08:57:03,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2018-07-25 08:57:03,731 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 157 [2018-07-25 08:57:03,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:03,732 INFO L472 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2018-07-25 08:57:03,732 INFO L473 AbstractCegarLoop]: Interpolant automaton has 157 states. [2018-07-25 08:57:03,732 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2018-07-25 08:57:03,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-07-25 08:57:03,732 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:03,733 INFO L354 BasicCegarLoop]: trace histogram [155, 1, 1, 1] [2018-07-25 08:57:03,733 INFO L415 AbstractCegarLoop]: === Iteration 156 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:03,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1101147770, now seen corresponding path program 155 times [2018-07-25 08:57:03,733 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:03,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:04,403 INFO L134 CoverageAnalysis]: Checked inductivity of 12090 backedges. 0 proven. 12090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:04,403 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:04,403 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [157] total 157 [2018-07-25 08:57:04,404 INFO L451 AbstractCegarLoop]: Interpolant automaton has 158 states [2018-07-25 08:57:04,405 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2018-07-25 08:57:04,406 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12403, Invalid=12403, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 08:57:04,406 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand 158 states. [2018-07-25 08:57:04,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:04,693 INFO L93 Difference]: Finished difference Result 162 states and 162 transitions. [2018-07-25 08:57:04,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2018-07-25 08:57:04,693 INFO L78 Accepts]: Start accepts. Automaton has 158 states. Word has length 158 [2018-07-25 08:57:04,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:04,694 INFO L225 Difference]: With dead ends: 162 [2018-07-25 08:57:04,694 INFO L226 Difference]: Without dead ends: 160 [2018-07-25 08:57:04,695 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12403, Invalid=12403, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 08:57:04,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-07-25 08:57:04,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2018-07-25 08:57:04,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2018-07-25 08:57:04,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 160 transitions. [2018-07-25 08:57:04,697 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 160 transitions. Word has length 158 [2018-07-25 08:57:04,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:04,697 INFO L472 AbstractCegarLoop]: Abstraction has 160 states and 160 transitions. [2018-07-25 08:57:04,697 INFO L473 AbstractCegarLoop]: Interpolant automaton has 158 states. [2018-07-25 08:57:04,697 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 160 transitions. [2018-07-25 08:57:04,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-07-25 08:57:04,698 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:04,698 INFO L354 BasicCegarLoop]: trace histogram [156, 1, 1, 1] [2018-07-25 08:57:04,698 INFO L415 AbstractCegarLoop]: === Iteration 157 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:04,698 INFO L82 PathProgramCache]: Analyzing trace with hash 224155552, now seen corresponding path program 156 times [2018-07-25 08:57:04,698 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:04,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:05,349 INFO L134 CoverageAnalysis]: Checked inductivity of 12246 backedges. 0 proven. 12246 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:05,349 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:05,349 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [158] total 158 [2018-07-25 08:57:05,349 INFO L451 AbstractCegarLoop]: Interpolant automaton has 159 states [2018-07-25 08:57:05,351 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 159 interpolants. [2018-07-25 08:57:05,351 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12561, Invalid=12561, Unknown=0, NotChecked=0, Total=25122 [2018-07-25 08:57:05,352 INFO L87 Difference]: Start difference. First operand 160 states and 160 transitions. Second operand 159 states. [2018-07-25 08:57:05,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:05,512 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2018-07-25 08:57:05,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2018-07-25 08:57:05,512 INFO L78 Accepts]: Start accepts. Automaton has 159 states. Word has length 159 [2018-07-25 08:57:05,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:05,513 INFO L225 Difference]: With dead ends: 163 [2018-07-25 08:57:05,513 INFO L226 Difference]: Without dead ends: 161 [2018-07-25 08:57:05,514 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12561, Invalid=12561, Unknown=0, NotChecked=0, Total=25122 [2018-07-25 08:57:05,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-07-25 08:57:05,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-07-25 08:57:05,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-07-25 08:57:05,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions. [2018-07-25 08:57:05,516 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 159 [2018-07-25 08:57:05,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:05,517 INFO L472 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions. [2018-07-25 08:57:05,517 INFO L473 AbstractCegarLoop]: Interpolant automaton has 159 states. [2018-07-25 08:57:05,517 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions. [2018-07-25 08:57:05,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-07-25 08:57:05,517 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:05,517 INFO L354 BasicCegarLoop]: trace histogram [157, 1, 1, 1] [2018-07-25 08:57:05,517 INFO L415 AbstractCegarLoop]: === Iteration 158 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:05,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1641114426, now seen corresponding path program 157 times [2018-07-25 08:57:05,518 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:05,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:06,239 INFO L134 CoverageAnalysis]: Checked inductivity of 12403 backedges. 0 proven. 12403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:06,240 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:06,240 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [159] total 159 [2018-07-25 08:57:06,240 INFO L451 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-07-25 08:57:06,241 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-07-25 08:57:06,242 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12720, Invalid=12720, Unknown=0, NotChecked=0, Total=25440 [2018-07-25 08:57:06,242 INFO L87 Difference]: Start difference. First operand 161 states and 161 transitions. Second operand 160 states. [2018-07-25 08:57:06,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:06,513 INFO L93 Difference]: Finished difference Result 164 states and 164 transitions. [2018-07-25 08:57:06,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2018-07-25 08:57:06,514 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 160 [2018-07-25 08:57:06,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:06,514 INFO L225 Difference]: With dead ends: 164 [2018-07-25 08:57:06,514 INFO L226 Difference]: Without dead ends: 162 [2018-07-25 08:57:06,515 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12720, Invalid=12720, Unknown=0, NotChecked=0, Total=25440 [2018-07-25 08:57:06,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2018-07-25 08:57:06,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2018-07-25 08:57:06,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2018-07-25 08:57:06,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 162 transitions. [2018-07-25 08:57:06,517 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 162 transitions. Word has length 160 [2018-07-25 08:57:06,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:06,518 INFO L472 AbstractCegarLoop]: Abstraction has 162 states and 162 transitions. [2018-07-25 08:57:06,518 INFO L473 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-07-25 08:57:06,518 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 162 transitions. [2018-07-25 08:57:06,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-07-25 08:57:06,518 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:06,518 INFO L354 BasicCegarLoop]: trace histogram [158, 1, 1, 1] [2018-07-25 08:57:06,518 INFO L415 AbstractCegarLoop]: === Iteration 159 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:06,519 INFO L82 PathProgramCache]: Analyzing trace with hash 665058400, now seen corresponding path program 158 times [2018-07-25 08:57:06,519 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:06,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:07,177 INFO L134 CoverageAnalysis]: Checked inductivity of 12561 backedges. 0 proven. 12561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:07,178 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:07,178 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [160] total 160 [2018-07-25 08:57:07,178 INFO L451 AbstractCegarLoop]: Interpolant automaton has 161 states [2018-07-25 08:57:07,180 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2018-07-25 08:57:07,180 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12880, Invalid=12880, Unknown=0, NotChecked=0, Total=25760 [2018-07-25 08:57:07,181 INFO L87 Difference]: Start difference. First operand 162 states and 162 transitions. Second operand 161 states. [2018-07-25 08:57:07,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:07,723 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2018-07-25 08:57:07,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2018-07-25 08:57:07,724 INFO L78 Accepts]: Start accepts. Automaton has 161 states. Word has length 161 [2018-07-25 08:57:07,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:07,724 INFO L225 Difference]: With dead ends: 165 [2018-07-25 08:57:07,724 INFO L226 Difference]: Without dead ends: 163 [2018-07-25 08:57:07,725 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12880, Invalid=12880, Unknown=0, NotChecked=0, Total=25760 [2018-07-25 08:57:07,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-07-25 08:57:07,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-07-25 08:57:07,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-07-25 08:57:07,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 163 transitions. [2018-07-25 08:57:07,728 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 163 transitions. Word has length 161 [2018-07-25 08:57:07,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:07,728 INFO L472 AbstractCegarLoop]: Abstraction has 163 states and 163 transitions. [2018-07-25 08:57:07,728 INFO L473 AbstractCegarLoop]: Interpolant automaton has 161 states. [2018-07-25 08:57:07,728 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 163 transitions. [2018-07-25 08:57:07,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-07-25 08:57:07,729 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:07,729 INFO L354 BasicCegarLoop]: trace histogram [159, 1, 1, 1] [2018-07-25 08:57:07,729 INFO L415 AbstractCegarLoop]: === Iteration 160 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:07,729 INFO L82 PathProgramCache]: Analyzing trace with hash -858028026, now seen corresponding path program 159 times [2018-07-25 08:57:07,730 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:07,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:08,411 INFO L134 CoverageAnalysis]: Checked inductivity of 12720 backedges. 0 proven. 12720 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:08,412 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:08,412 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [161] total 161 [2018-07-25 08:57:08,412 INFO L451 AbstractCegarLoop]: Interpolant automaton has 162 states [2018-07-25 08:57:08,414 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2018-07-25 08:57:08,415 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13041, Invalid=13041, Unknown=0, NotChecked=0, Total=26082 [2018-07-25 08:57:08,415 INFO L87 Difference]: Start difference. First operand 163 states and 163 transitions. Second operand 162 states. [2018-07-25 08:57:08,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:08,961 INFO L93 Difference]: Finished difference Result 166 states and 166 transitions. [2018-07-25 08:57:08,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2018-07-25 08:57:08,961 INFO L78 Accepts]: Start accepts. Automaton has 162 states. Word has length 162 [2018-07-25 08:57:08,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:08,962 INFO L225 Difference]: With dead ends: 166 [2018-07-25 08:57:08,962 INFO L226 Difference]: Without dead ends: 164 [2018-07-25 08:57:08,963 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13041, Invalid=13041, Unknown=0, NotChecked=0, Total=26082 [2018-07-25 08:57:08,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2018-07-25 08:57:08,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2018-07-25 08:57:08,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-07-25 08:57:08,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 164 transitions. [2018-07-25 08:57:08,966 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 164 transitions. Word has length 162 [2018-07-25 08:57:08,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:08,966 INFO L472 AbstractCegarLoop]: Abstraction has 164 states and 164 transitions. [2018-07-25 08:57:08,966 INFO L473 AbstractCegarLoop]: Interpolant automaton has 162 states. [2018-07-25 08:57:08,966 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 164 transitions. [2018-07-25 08:57:08,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-07-25 08:57:08,967 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:08,967 INFO L354 BasicCegarLoop]: trace histogram [160, 1, 1, 1] [2018-07-25 08:57:08,967 INFO L415 AbstractCegarLoop]: === Iteration 161 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:08,967 INFO L82 PathProgramCache]: Analyzing trace with hash -829066976, now seen corresponding path program 160 times [2018-07-25 08:57:08,967 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:09,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:09,680 INFO L134 CoverageAnalysis]: Checked inductivity of 12880 backedges. 0 proven. 12880 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:09,680 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:09,680 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [162] total 162 [2018-07-25 08:57:09,681 INFO L451 AbstractCegarLoop]: Interpolant automaton has 163 states [2018-07-25 08:57:09,682 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants. [2018-07-25 08:57:09,683 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13203, Invalid=13203, Unknown=0, NotChecked=0, Total=26406 [2018-07-25 08:57:09,683 INFO L87 Difference]: Start difference. First operand 164 states and 164 transitions. Second operand 163 states. [2018-07-25 08:57:10,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:10,206 INFO L93 Difference]: Finished difference Result 167 states and 167 transitions. [2018-07-25 08:57:10,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2018-07-25 08:57:10,206 INFO L78 Accepts]: Start accepts. Automaton has 163 states. Word has length 163 [2018-07-25 08:57:10,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:10,207 INFO L225 Difference]: With dead ends: 167 [2018-07-25 08:57:10,207 INFO L226 Difference]: Without dead ends: 165 [2018-07-25 08:57:10,208 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13203, Invalid=13203, Unknown=0, NotChecked=0, Total=26406 [2018-07-25 08:57:10,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-07-25 08:57:10,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-07-25 08:57:10,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-07-25 08:57:10,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 165 transitions. [2018-07-25 08:57:10,211 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 165 transitions. Word has length 163 [2018-07-25 08:57:10,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:10,212 INFO L472 AbstractCegarLoop]: Abstraction has 165 states and 165 transitions. [2018-07-25 08:57:10,212 INFO L473 AbstractCegarLoop]: Interpolant automaton has 163 states. [2018-07-25 08:57:10,212 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 165 transitions. [2018-07-25 08:57:10,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-07-25 08:57:10,213 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:10,213 INFO L354 BasicCegarLoop]: trace histogram [161, 1, 1, 1] [2018-07-25 08:57:10,213 INFO L415 AbstractCegarLoop]: === Iteration 162 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:10,213 INFO L82 PathProgramCache]: Analyzing trace with hash 68725574, now seen corresponding path program 161 times [2018-07-25 08:57:10,213 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:10,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:10,961 INFO L134 CoverageAnalysis]: Checked inductivity of 13041 backedges. 0 proven. 13041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:10,962 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:10,962 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [163] total 163 [2018-07-25 08:57:10,962 INFO L451 AbstractCegarLoop]: Interpolant automaton has 164 states [2018-07-25 08:57:10,964 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2018-07-25 08:57:10,964 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13366, Invalid=13366, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 08:57:10,964 INFO L87 Difference]: Start difference. First operand 165 states and 165 transitions. Second operand 164 states. [2018-07-25 08:57:11,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:11,147 INFO L93 Difference]: Finished difference Result 168 states and 168 transitions. [2018-07-25 08:57:11,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2018-07-25 08:57:11,147 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 164 [2018-07-25 08:57:11,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:11,148 INFO L225 Difference]: With dead ends: 168 [2018-07-25 08:57:11,148 INFO L226 Difference]: Without dead ends: 166 [2018-07-25 08:57:11,149 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13366, Invalid=13366, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 08:57:11,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-07-25 08:57:11,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2018-07-25 08:57:11,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2018-07-25 08:57:11,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 166 transitions. [2018-07-25 08:57:11,152 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 166 transitions. Word has length 164 [2018-07-25 08:57:11,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:11,152 INFO L472 AbstractCegarLoop]: Abstraction has 166 states and 166 transitions. [2018-07-25 08:57:11,152 INFO L473 AbstractCegarLoop]: Interpolant automaton has 164 states. [2018-07-25 08:57:11,152 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 166 transitions. [2018-07-25 08:57:11,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-07-25 08:57:11,153 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:11,153 INFO L354 BasicCegarLoop]: trace histogram [162, 1, 1, 1] [2018-07-25 08:57:11,153 INFO L415 AbstractCegarLoop]: === Iteration 163 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:11,153 INFO L82 PathProgramCache]: Analyzing trace with hash 2130490848, now seen corresponding path program 162 times [2018-07-25 08:57:11,153 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:11,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:11,869 INFO L134 CoverageAnalysis]: Checked inductivity of 13203 backedges. 0 proven. 13203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:11,869 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:11,869 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [164] total 164 [2018-07-25 08:57:11,869 INFO L451 AbstractCegarLoop]: Interpolant automaton has 165 states [2018-07-25 08:57:11,871 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 165 interpolants. [2018-07-25 08:57:11,872 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13530, Invalid=13530, Unknown=0, NotChecked=0, Total=27060 [2018-07-25 08:57:11,872 INFO L87 Difference]: Start difference. First operand 166 states and 166 transitions. Second operand 165 states. [2018-07-25 08:57:12,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:12,206 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-07-25 08:57:12,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2018-07-25 08:57:12,207 INFO L78 Accepts]: Start accepts. Automaton has 165 states. Word has length 165 [2018-07-25 08:57:12,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:12,207 INFO L225 Difference]: With dead ends: 169 [2018-07-25 08:57:12,207 INFO L226 Difference]: Without dead ends: 167 [2018-07-25 08:57:12,208 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13530, Invalid=13530, Unknown=0, NotChecked=0, Total=27060 [2018-07-25 08:57:12,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-07-25 08:57:12,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-07-25 08:57:12,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-07-25 08:57:12,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2018-07-25 08:57:12,210 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 165 [2018-07-25 08:57:12,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:12,210 INFO L472 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2018-07-25 08:57:12,210 INFO L473 AbstractCegarLoop]: Interpolant automaton has 165 states. [2018-07-25 08:57:12,211 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2018-07-25 08:57:12,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-07-25 08:57:12,211 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:12,211 INFO L354 BasicCegarLoop]: trace histogram [163, 1, 1, 1] [2018-07-25 08:57:12,211 INFO L415 AbstractCegarLoop]: === Iteration 164 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:12,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1620704902, now seen corresponding path program 163 times [2018-07-25 08:57:12,211 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:12,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:12,830 INFO L134 CoverageAnalysis]: Checked inductivity of 13366 backedges. 0 proven. 13366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:12,830 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:12,830 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [165] total 165 [2018-07-25 08:57:12,831 INFO L451 AbstractCegarLoop]: Interpolant automaton has 166 states [2018-07-25 08:57:12,832 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2018-07-25 08:57:12,833 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13695, Invalid=13695, Unknown=0, NotChecked=0, Total=27390 [2018-07-25 08:57:12,833 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 166 states. [2018-07-25 08:57:13,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:13,464 INFO L93 Difference]: Finished difference Result 170 states and 170 transitions. [2018-07-25 08:57:13,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2018-07-25 08:57:13,465 INFO L78 Accepts]: Start accepts. Automaton has 166 states. Word has length 166 [2018-07-25 08:57:13,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:13,465 INFO L225 Difference]: With dead ends: 170 [2018-07-25 08:57:13,465 INFO L226 Difference]: Without dead ends: 168 [2018-07-25 08:57:13,466 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13695, Invalid=13695, Unknown=0, NotChecked=0, Total=27390 [2018-07-25 08:57:13,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2018-07-25 08:57:13,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2018-07-25 08:57:13,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2018-07-25 08:57:13,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 168 transitions. [2018-07-25 08:57:13,469 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 168 transitions. Word has length 166 [2018-07-25 08:57:13,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:13,469 INFO L472 AbstractCegarLoop]: Abstraction has 168 states and 168 transitions. [2018-07-25 08:57:13,469 INFO L473 AbstractCegarLoop]: Interpolant automaton has 166 states. [2018-07-25 08:57:13,469 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 168 transitions. [2018-07-25 08:57:13,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-07-25 08:57:13,470 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:13,470 INFO L354 BasicCegarLoop]: trace histogram [164, 1, 1, 1] [2018-07-25 08:57:13,470 INFO L415 AbstractCegarLoop]: === Iteration 165 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:13,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1297757536, now seen corresponding path program 164 times [2018-07-25 08:57:13,470 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:13,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:14,179 INFO L134 CoverageAnalysis]: Checked inductivity of 13530 backedges. 0 proven. 13530 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:14,179 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:14,179 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [166] total 166 [2018-07-25 08:57:14,180 INFO L451 AbstractCegarLoop]: Interpolant automaton has 167 states [2018-07-25 08:57:14,181 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 167 interpolants. [2018-07-25 08:57:14,182 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13861, Invalid=13861, Unknown=0, NotChecked=0, Total=27722 [2018-07-25 08:57:14,182 INFO L87 Difference]: Start difference. First operand 168 states and 168 transitions. Second operand 167 states. [2018-07-25 08:57:14,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:14,630 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2018-07-25 08:57:14,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2018-07-25 08:57:14,630 INFO L78 Accepts]: Start accepts. Automaton has 167 states. Word has length 167 [2018-07-25 08:57:14,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:14,631 INFO L225 Difference]: With dead ends: 171 [2018-07-25 08:57:14,631 INFO L226 Difference]: Without dead ends: 169 [2018-07-25 08:57:14,633 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13861, Invalid=13861, Unknown=0, NotChecked=0, Total=27722 [2018-07-25 08:57:14,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-07-25 08:57:14,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-07-25 08:57:14,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-07-25 08:57:14,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 169 transitions. [2018-07-25 08:57:14,636 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 169 transitions. Word has length 167 [2018-07-25 08:57:14,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:14,636 INFO L472 AbstractCegarLoop]: Abstraction has 169 states and 169 transitions. [2018-07-25 08:57:14,636 INFO L473 AbstractCegarLoop]: Interpolant automaton has 167 states. [2018-07-25 08:57:14,636 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 169 transitions. [2018-07-25 08:57:14,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-07-25 08:57:14,637 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:14,637 INFO L354 BasicCegarLoop]: trace histogram [165, 1, 1, 1] [2018-07-25 08:57:14,637 INFO L415 AbstractCegarLoop]: === Iteration 166 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:14,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1575779898, now seen corresponding path program 165 times [2018-07-25 08:57:14,637 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:14,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:15,390 INFO L134 CoverageAnalysis]: Checked inductivity of 13695 backedges. 0 proven. 13695 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:15,390 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:15,391 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [167] total 167 [2018-07-25 08:57:15,391 INFO L451 AbstractCegarLoop]: Interpolant automaton has 168 states [2018-07-25 08:57:15,393 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2018-07-25 08:57:15,393 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14028, Invalid=14028, Unknown=0, NotChecked=0, Total=28056 [2018-07-25 08:57:15,394 INFO L87 Difference]: Start difference. First operand 169 states and 169 transitions. Second operand 168 states. [2018-07-25 08:57:15,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:15,645 INFO L93 Difference]: Finished difference Result 172 states and 172 transitions. [2018-07-25 08:57:15,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2018-07-25 08:57:15,645 INFO L78 Accepts]: Start accepts. Automaton has 168 states. Word has length 168 [2018-07-25 08:57:15,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:15,646 INFO L225 Difference]: With dead ends: 172 [2018-07-25 08:57:15,646 INFO L226 Difference]: Without dead ends: 170 [2018-07-25 08:57:15,647 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14028, Invalid=14028, Unknown=0, NotChecked=0, Total=28056 [2018-07-25 08:57:15,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-07-25 08:57:15,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2018-07-25 08:57:15,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2018-07-25 08:57:15,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 170 transitions. [2018-07-25 08:57:15,650 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 170 transitions. Word has length 168 [2018-07-25 08:57:15,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:15,650 INFO L472 AbstractCegarLoop]: Abstraction has 170 states and 170 transitions. [2018-07-25 08:57:15,650 INFO L473 AbstractCegarLoop]: Interpolant automaton has 168 states. [2018-07-25 08:57:15,651 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 170 transitions. [2018-07-25 08:57:15,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-07-25 08:57:15,651 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:15,651 INFO L354 BasicCegarLoop]: trace histogram [166, 1, 1, 1] [2018-07-25 08:57:15,652 INFO L415 AbstractCegarLoop]: === Iteration 167 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:15,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1604538528, now seen corresponding path program 166 times [2018-07-25 08:57:15,652 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:15,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:16,370 INFO L134 CoverageAnalysis]: Checked inductivity of 13861 backedges. 0 proven. 13861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:16,370 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:16,370 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [168] total 168 [2018-07-25 08:57:16,370 INFO L451 AbstractCegarLoop]: Interpolant automaton has 169 states [2018-07-25 08:57:16,372 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 169 interpolants. [2018-07-25 08:57:16,373 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14196, Invalid=14196, Unknown=0, NotChecked=0, Total=28392 [2018-07-25 08:57:16,373 INFO L87 Difference]: Start difference. First operand 170 states and 170 transitions. Second operand 169 states. [2018-07-25 08:57:16,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:16,882 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2018-07-25 08:57:16,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2018-07-25 08:57:16,882 INFO L78 Accepts]: Start accepts. Automaton has 169 states. Word has length 169 [2018-07-25 08:57:16,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:16,882 INFO L225 Difference]: With dead ends: 173 [2018-07-25 08:57:16,882 INFO L226 Difference]: Without dead ends: 171 [2018-07-25 08:57:16,883 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14196, Invalid=14196, Unknown=0, NotChecked=0, Total=28392 [2018-07-25 08:57:16,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-07-25 08:57:16,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-07-25 08:57:16,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-07-25 08:57:16,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2018-07-25 08:57:16,886 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 169 [2018-07-25 08:57:16,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:16,886 INFO L472 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2018-07-25 08:57:16,886 INFO L473 AbstractCegarLoop]: Interpolant automaton has 169 states. [2018-07-25 08:57:16,886 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2018-07-25 08:57:16,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-07-25 08:57:16,887 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:16,887 INFO L354 BasicCegarLoop]: trace histogram [167, 1, 1, 1] [2018-07-25 08:57:16,887 INFO L415 AbstractCegarLoop]: === Iteration 168 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:16,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1798911238, now seen corresponding path program 167 times [2018-07-25 08:57:16,887 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:17,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:17,605 INFO L134 CoverageAnalysis]: Checked inductivity of 14028 backedges. 0 proven. 14028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:17,605 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:17,605 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [169] total 169 [2018-07-25 08:57:17,605 INFO L451 AbstractCegarLoop]: Interpolant automaton has 170 states [2018-07-25 08:57:17,607 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants. [2018-07-25 08:57:17,608 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14365, Invalid=14365, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 08:57:17,608 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 170 states. [2018-07-25 08:57:18,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:18,058 INFO L93 Difference]: Finished difference Result 174 states and 174 transitions. [2018-07-25 08:57:18,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2018-07-25 08:57:18,058 INFO L78 Accepts]: Start accepts. Automaton has 170 states. Word has length 170 [2018-07-25 08:57:18,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:18,059 INFO L225 Difference]: With dead ends: 174 [2018-07-25 08:57:18,059 INFO L226 Difference]: Without dead ends: 172 [2018-07-25 08:57:18,060 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14365, Invalid=14365, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 08:57:18,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2018-07-25 08:57:18,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2018-07-25 08:57:18,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2018-07-25 08:57:18,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 172 transitions. [2018-07-25 08:57:18,063 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 172 transitions. Word has length 170 [2018-07-25 08:57:18,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:18,063 INFO L472 AbstractCegarLoop]: Abstraction has 172 states and 172 transitions. [2018-07-25 08:57:18,063 INFO L473 AbstractCegarLoop]: Interpolant automaton has 170 states. [2018-07-25 08:57:18,063 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 172 transitions. [2018-07-25 08:57:18,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-07-25 08:57:18,063 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:18,064 INFO L354 BasicCegarLoop]: trace histogram [168, 1, 1, 1] [2018-07-25 08:57:18,064 INFO L415 AbstractCegarLoop]: === Iteration 169 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:18,064 INFO L82 PathProgramCache]: Analyzing trace with hash -68328416, now seen corresponding path program 168 times [2018-07-25 08:57:18,064 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:18,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:18,864 INFO L134 CoverageAnalysis]: Checked inductivity of 14196 backedges. 0 proven. 14196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:18,864 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:18,864 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [170] total 170 [2018-07-25 08:57:18,864 INFO L451 AbstractCegarLoop]: Interpolant automaton has 171 states [2018-07-25 08:57:18,865 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 171 interpolants. [2018-07-25 08:57:18,866 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14535, Invalid=14535, Unknown=0, NotChecked=0, Total=29070 [2018-07-25 08:57:18,866 INFO L87 Difference]: Start difference. First operand 172 states and 172 transitions. Second operand 171 states. [2018-07-25 08:57:19,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:19,178 INFO L93 Difference]: Finished difference Result 175 states and 175 transitions. [2018-07-25 08:57:19,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2018-07-25 08:57:19,178 INFO L78 Accepts]: Start accepts. Automaton has 171 states. Word has length 171 [2018-07-25 08:57:19,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:19,179 INFO L225 Difference]: With dead ends: 175 [2018-07-25 08:57:19,179 INFO L226 Difference]: Without dead ends: 173 [2018-07-25 08:57:19,180 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14535, Invalid=14535, Unknown=0, NotChecked=0, Total=29070 [2018-07-25 08:57:19,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-07-25 08:57:19,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-07-25 08:57:19,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-07-25 08:57:19,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 173 transitions. [2018-07-25 08:57:19,182 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 173 transitions. Word has length 171 [2018-07-25 08:57:19,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:19,182 INFO L472 AbstractCegarLoop]: Abstraction has 173 states and 173 transitions. [2018-07-25 08:57:19,182 INFO L473 AbstractCegarLoop]: Interpolant automaton has 171 states. [2018-07-25 08:57:19,182 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 173 transitions. [2018-07-25 08:57:19,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-07-25 08:57:19,183 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:19,183 INFO L354 BasicCegarLoop]: trace histogram [169, 1, 1, 1] [2018-07-25 08:57:19,183 INFO L415 AbstractCegarLoop]: === Iteration 170 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:19,183 INFO L82 PathProgramCache]: Analyzing trace with hash -2118182842, now seen corresponding path program 169 times [2018-07-25 08:57:19,183 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:19,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:19,938 INFO L134 CoverageAnalysis]: Checked inductivity of 14365 backedges. 0 proven. 14365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:19,939 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:19,939 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [171] total 171 [2018-07-25 08:57:19,939 INFO L451 AbstractCegarLoop]: Interpolant automaton has 172 states [2018-07-25 08:57:19,941 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2018-07-25 08:57:19,942 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14706, Invalid=14706, Unknown=0, NotChecked=0, Total=29412 [2018-07-25 08:57:19,942 INFO L87 Difference]: Start difference. First operand 173 states and 173 transitions. Second operand 172 states. [2018-07-25 08:57:20,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:20,669 INFO L93 Difference]: Finished difference Result 176 states and 176 transitions. [2018-07-25 08:57:20,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2018-07-25 08:57:20,669 INFO L78 Accepts]: Start accepts. Automaton has 172 states. Word has length 172 [2018-07-25 08:57:20,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:20,670 INFO L225 Difference]: With dead ends: 176 [2018-07-25 08:57:20,670 INFO L226 Difference]: Without dead ends: 174 [2018-07-25 08:57:20,671 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14706, Invalid=14706, Unknown=0, NotChecked=0, Total=29412 [2018-07-25 08:57:20,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2018-07-25 08:57:20,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2018-07-25 08:57:20,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-07-25 08:57:20,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 174 transitions. [2018-07-25 08:57:20,674 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 174 transitions. Word has length 172 [2018-07-25 08:57:20,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:20,674 INFO L472 AbstractCegarLoop]: Abstraction has 174 states and 174 transitions. [2018-07-25 08:57:20,674 INFO L473 AbstractCegarLoop]: Interpolant automaton has 172 states. [2018-07-25 08:57:20,674 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 174 transitions. [2018-07-25 08:57:20,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-07-25 08:57:20,674 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:20,674 INFO L354 BasicCegarLoop]: trace histogram [170, 1, 1, 1] [2018-07-25 08:57:20,675 INFO L415 AbstractCegarLoop]: === Iteration 171 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:20,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1239160608, now seen corresponding path program 170 times [2018-07-25 08:57:20,675 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:20,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:21,452 INFO L134 CoverageAnalysis]: Checked inductivity of 14535 backedges. 0 proven. 14535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:21,452 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:21,452 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [172] total 172 [2018-07-25 08:57:21,453 INFO L451 AbstractCegarLoop]: Interpolant automaton has 173 states [2018-07-25 08:57:21,455 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 173 interpolants. [2018-07-25 08:57:21,456 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14878, Invalid=14878, Unknown=0, NotChecked=0, Total=29756 [2018-07-25 08:57:21,456 INFO L87 Difference]: Start difference. First operand 174 states and 174 transitions. Second operand 173 states. [2018-07-25 08:57:21,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:21,713 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-07-25 08:57:21,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2018-07-25 08:57:21,714 INFO L78 Accepts]: Start accepts. Automaton has 173 states. Word has length 173 [2018-07-25 08:57:21,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:21,714 INFO L225 Difference]: With dead ends: 177 [2018-07-25 08:57:21,714 INFO L226 Difference]: Without dead ends: 175 [2018-07-25 08:57:21,716 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14878, Invalid=14878, Unknown=0, NotChecked=0, Total=29756 [2018-07-25 08:57:21,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-07-25 08:57:21,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-07-25 08:57:21,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-07-25 08:57:21,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 175 transitions. [2018-07-25 08:57:21,719 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 175 transitions. Word has length 173 [2018-07-25 08:57:21,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:21,719 INFO L472 AbstractCegarLoop]: Abstraction has 175 states and 175 transitions. [2018-07-25 08:57:21,719 INFO L473 AbstractCegarLoop]: Interpolant automaton has 173 states. [2018-07-25 08:57:21,719 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 175 transitions. [2018-07-25 08:57:21,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-07-25 08:57:21,720 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:21,720 INFO L354 BasicCegarLoop]: trace histogram [171, 1, 1, 1] [2018-07-25 08:57:21,720 INFO L415 AbstractCegarLoop]: === Iteration 172 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:21,720 INFO L82 PathProgramCache]: Analyzing trace with hash 240724870, now seen corresponding path program 171 times [2018-07-25 08:57:21,720 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:21,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:22,438 INFO L134 CoverageAnalysis]: Checked inductivity of 14706 backedges. 0 proven. 14706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:22,438 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:22,438 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [173] total 173 [2018-07-25 08:57:22,438 INFO L451 AbstractCegarLoop]: Interpolant automaton has 174 states [2018-07-25 08:57:22,440 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 174 interpolants. [2018-07-25 08:57:22,441 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15051, Invalid=15051, Unknown=0, NotChecked=0, Total=30102 [2018-07-25 08:57:22,441 INFO L87 Difference]: Start difference. First operand 175 states and 175 transitions. Second operand 174 states. [2018-07-25 08:57:23,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:23,213 INFO L93 Difference]: Finished difference Result 178 states and 178 transitions. [2018-07-25 08:57:23,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2018-07-25 08:57:23,213 INFO L78 Accepts]: Start accepts. Automaton has 174 states. Word has length 174 [2018-07-25 08:57:23,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:23,214 INFO L225 Difference]: With dead ends: 178 [2018-07-25 08:57:23,214 INFO L226 Difference]: Without dead ends: 176 [2018-07-25 08:57:23,215 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15051, Invalid=15051, Unknown=0, NotChecked=0, Total=30102 [2018-07-25 08:57:23,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2018-07-25 08:57:23,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2018-07-25 08:57:23,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-07-25 08:57:23,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 176 transitions. [2018-07-25 08:57:23,219 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 176 transitions. Word has length 174 [2018-07-25 08:57:23,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:23,219 INFO L472 AbstractCegarLoop]: Abstraction has 176 states and 176 transitions. [2018-07-25 08:57:23,219 INFO L473 AbstractCegarLoop]: Interpolant automaton has 174 states. [2018-07-25 08:57:23,219 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 176 transitions. [2018-07-25 08:57:23,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-07-25 08:57:23,220 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:23,220 INFO L354 BasicCegarLoop]: trace histogram [172, 1, 1, 1] [2018-07-25 08:57:23,220 INFO L415 AbstractCegarLoop]: === Iteration 173 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:23,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1127465568, now seen corresponding path program 172 times [2018-07-25 08:57:23,220 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:23,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:24,058 INFO L134 CoverageAnalysis]: Checked inductivity of 14878 backedges. 0 proven. 14878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:24,059 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:24,059 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [174] total 174 [2018-07-25 08:57:24,059 INFO L451 AbstractCegarLoop]: Interpolant automaton has 175 states [2018-07-25 08:57:24,061 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 175 interpolants. [2018-07-25 08:57:24,061 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15225, Invalid=15225, Unknown=0, NotChecked=0, Total=30450 [2018-07-25 08:57:24,062 INFO L87 Difference]: Start difference. First operand 176 states and 176 transitions. Second operand 175 states. [2018-07-25 08:57:24,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:24,413 INFO L93 Difference]: Finished difference Result 179 states and 179 transitions. [2018-07-25 08:57:24,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2018-07-25 08:57:24,413 INFO L78 Accepts]: Start accepts. Automaton has 175 states. Word has length 175 [2018-07-25 08:57:24,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:24,413 INFO L225 Difference]: With dead ends: 179 [2018-07-25 08:57:24,413 INFO L226 Difference]: Without dead ends: 177 [2018-07-25 08:57:24,415 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15225, Invalid=15225, Unknown=0, NotChecked=0, Total=30450 [2018-07-25 08:57:24,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-07-25 08:57:24,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-07-25 08:57:24,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-07-25 08:57:24,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 177 transitions. [2018-07-25 08:57:24,418 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 177 transitions. Word has length 175 [2018-07-25 08:57:24,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:24,418 INFO L472 AbstractCegarLoop]: Abstraction has 177 states and 177 transitions. [2018-07-25 08:57:24,418 INFO L473 AbstractCegarLoop]: Interpolant automaton has 175 states. [2018-07-25 08:57:24,418 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 177 transitions. [2018-07-25 08:57:24,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-07-25 08:57:24,419 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:24,419 INFO L354 BasicCegarLoop]: trace histogram [173, 1, 1, 1] [2018-07-25 08:57:24,419 INFO L415 AbstractCegarLoop]: === Iteration 174 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:24,419 INFO L82 PathProgramCache]: Analyzing trace with hash -591696186, now seen corresponding path program 173 times [2018-07-25 08:57:24,419 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:24,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:25,132 INFO L134 CoverageAnalysis]: Checked inductivity of 15051 backedges. 0 proven. 15051 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:25,132 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:25,133 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [175] total 175 [2018-07-25 08:57:25,133 INFO L451 AbstractCegarLoop]: Interpolant automaton has 176 states [2018-07-25 08:57:25,135 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2018-07-25 08:57:25,137 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15400, Invalid=15400, Unknown=0, NotChecked=0, Total=30800 [2018-07-25 08:57:25,137 INFO L87 Difference]: Start difference. First operand 177 states and 177 transitions. Second operand 176 states. [2018-07-25 08:57:25,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:25,621 INFO L93 Difference]: Finished difference Result 180 states and 180 transitions. [2018-07-25 08:57:25,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2018-07-25 08:57:25,621 INFO L78 Accepts]: Start accepts. Automaton has 176 states. Word has length 176 [2018-07-25 08:57:25,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:25,622 INFO L225 Difference]: With dead ends: 180 [2018-07-25 08:57:25,622 INFO L226 Difference]: Without dead ends: 178 [2018-07-25 08:57:25,623 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15400, Invalid=15400, Unknown=0, NotChecked=0, Total=30800 [2018-07-25 08:57:25,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-07-25 08:57:25,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2018-07-25 08:57:25,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-07-25 08:57:25,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 178 transitions. [2018-07-25 08:57:25,625 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 178 transitions. Word has length 176 [2018-07-25 08:57:25,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:25,625 INFO L472 AbstractCegarLoop]: Abstraction has 178 states and 178 transitions. [2018-07-25 08:57:25,625 INFO L473 AbstractCegarLoop]: Interpolant automaton has 176 states. [2018-07-25 08:57:25,625 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 178 transitions. [2018-07-25 08:57:25,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-07-25 08:57:25,626 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:25,626 INFO L354 BasicCegarLoop]: trace histogram [174, 1, 1, 1] [2018-07-25 08:57:25,626 INFO L415 AbstractCegarLoop]: === Iteration 175 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:25,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1162714528, now seen corresponding path program 174 times [2018-07-25 08:57:25,626 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:25,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:26,339 INFO L134 CoverageAnalysis]: Checked inductivity of 15225 backedges. 0 proven. 15225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:26,339 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:26,339 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [176] total 176 [2018-07-25 08:57:26,340 INFO L451 AbstractCegarLoop]: Interpolant automaton has 177 states [2018-07-25 08:57:26,341 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 177 interpolants. [2018-07-25 08:57:26,342 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15576, Invalid=15576, Unknown=0, NotChecked=0, Total=31152 [2018-07-25 08:57:26,343 INFO L87 Difference]: Start difference. First operand 178 states and 178 transitions. Second operand 177 states. [2018-07-25 08:57:26,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:26,786 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2018-07-25 08:57:26,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2018-07-25 08:57:26,786 INFO L78 Accepts]: Start accepts. Automaton has 177 states. Word has length 177 [2018-07-25 08:57:26,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:26,786 INFO L225 Difference]: With dead ends: 181 [2018-07-25 08:57:26,786 INFO L226 Difference]: Without dead ends: 179 [2018-07-25 08:57:26,788 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15576, Invalid=15576, Unknown=0, NotChecked=0, Total=31152 [2018-07-25 08:57:26,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-07-25 08:57:26,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-07-25 08:57:26,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-07-25 08:57:26,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2018-07-25 08:57:26,790 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 177 [2018-07-25 08:57:26,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:26,790 INFO L472 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2018-07-25 08:57:26,790 INFO L473 AbstractCegarLoop]: Interpolant automaton has 177 states. [2018-07-25 08:57:26,790 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2018-07-25 08:57:26,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-07-25 08:57:26,790 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:26,791 INFO L354 BasicCegarLoop]: trace histogram [175, 1, 1, 1] [2018-07-25 08:57:26,791 INFO L415 AbstractCegarLoop]: === Iteration 176 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:26,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1684413946, now seen corresponding path program 175 times [2018-07-25 08:57:26,791 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:26,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:27,541 INFO L134 CoverageAnalysis]: Checked inductivity of 15400 backedges. 0 proven. 15400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:27,541 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:27,542 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [177] total 177 [2018-07-25 08:57:27,542 INFO L451 AbstractCegarLoop]: Interpolant automaton has 178 states [2018-07-25 08:57:27,543 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 178 interpolants. [2018-07-25 08:57:27,544 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15753, Invalid=15753, Unknown=0, NotChecked=0, Total=31506 [2018-07-25 08:57:27,544 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand 178 states. [2018-07-25 08:57:28,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:28,009 INFO L93 Difference]: Finished difference Result 182 states and 182 transitions. [2018-07-25 08:57:28,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2018-07-25 08:57:28,009 INFO L78 Accepts]: Start accepts. Automaton has 178 states. Word has length 178 [2018-07-25 08:57:28,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:28,010 INFO L225 Difference]: With dead ends: 182 [2018-07-25 08:57:28,010 INFO L226 Difference]: Without dead ends: 180 [2018-07-25 08:57:28,011 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15753, Invalid=15753, Unknown=0, NotChecked=0, Total=31506 [2018-07-25 08:57:28,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2018-07-25 08:57:28,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2018-07-25 08:57:28,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2018-07-25 08:57:28,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 180 transitions. [2018-07-25 08:57:28,013 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 180 transitions. Word has length 178 [2018-07-25 08:57:28,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:28,013 INFO L472 AbstractCegarLoop]: Abstraction has 180 states and 180 transitions. [2018-07-25 08:57:28,013 INFO L473 AbstractCegarLoop]: Interpolant automaton has 178 states. [2018-07-25 08:57:28,013 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 180 transitions. [2018-07-25 08:57:28,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-07-25 08:57:28,013 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:28,014 INFO L354 BasicCegarLoop]: trace histogram [176, 1, 1, 1] [2018-07-25 08:57:28,014 INFO L415 AbstractCegarLoop]: === Iteration 177 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:28,014 INFO L82 PathProgramCache]: Analyzing trace with hash -677226720, now seen corresponding path program 176 times [2018-07-25 08:57:28,014 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:28,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:28,734 INFO L134 CoverageAnalysis]: Checked inductivity of 15576 backedges. 0 proven. 15576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:28,734 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:28,734 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [178] total 178 [2018-07-25 08:57:28,734 INFO L451 AbstractCegarLoop]: Interpolant automaton has 179 states [2018-07-25 08:57:28,736 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 179 interpolants. [2018-07-25 08:57:28,737 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15931, Invalid=15931, Unknown=0, NotChecked=0, Total=31862 [2018-07-25 08:57:28,737 INFO L87 Difference]: Start difference. First operand 180 states and 180 transitions. Second operand 179 states. [2018-07-25 08:57:29,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:29,141 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2018-07-25 08:57:29,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2018-07-25 08:57:29,141 INFO L78 Accepts]: Start accepts. Automaton has 179 states. Word has length 179 [2018-07-25 08:57:29,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:29,142 INFO L225 Difference]: With dead ends: 183 [2018-07-25 08:57:29,142 INFO L226 Difference]: Without dead ends: 181 [2018-07-25 08:57:29,143 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15931, Invalid=15931, Unknown=0, NotChecked=0, Total=31862 [2018-07-25 08:57:29,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-07-25 08:57:29,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-07-25 08:57:29,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-07-25 08:57:29,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 181 transitions. [2018-07-25 08:57:29,145 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 181 transitions. Word has length 179 [2018-07-25 08:57:29,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:29,145 INFO L472 AbstractCegarLoop]: Abstraction has 181 states and 181 transitions. [2018-07-25 08:57:29,145 INFO L473 AbstractCegarLoop]: Interpolant automaton has 179 states. [2018-07-25 08:57:29,145 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 181 transitions. [2018-07-25 08:57:29,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-07-25 08:57:29,146 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:29,146 INFO L354 BasicCegarLoop]: trace histogram [177, 1, 1, 1] [2018-07-25 08:57:29,146 INFO L415 AbstractCegarLoop]: === Iteration 178 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:29,146 INFO L82 PathProgramCache]: Analyzing trace with hash 480806214, now seen corresponding path program 177 times [2018-07-25 08:57:29,147 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:29,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:29,882 INFO L134 CoverageAnalysis]: Checked inductivity of 15753 backedges. 0 proven. 15753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:29,882 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:29,882 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [179] total 179 [2018-07-25 08:57:29,882 INFO L451 AbstractCegarLoop]: Interpolant automaton has 180 states [2018-07-25 08:57:29,884 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2018-07-25 08:57:29,885 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16110, Invalid=16110, Unknown=0, NotChecked=0, Total=32220 [2018-07-25 08:57:29,885 INFO L87 Difference]: Start difference. First operand 181 states and 181 transitions. Second operand 180 states. [2018-07-25 08:57:30,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:30,499 INFO L93 Difference]: Finished difference Result 184 states and 184 transitions. [2018-07-25 08:57:30,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2018-07-25 08:57:30,499 INFO L78 Accepts]: Start accepts. Automaton has 180 states. Word has length 180 [2018-07-25 08:57:30,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:30,499 INFO L225 Difference]: With dead ends: 184 [2018-07-25 08:57:30,499 INFO L226 Difference]: Without dead ends: 182 [2018-07-25 08:57:30,501 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=16110, Invalid=16110, Unknown=0, NotChecked=0, Total=32220 [2018-07-25 08:57:30,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-07-25 08:57:30,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2018-07-25 08:57:30,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-07-25 08:57:30,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 182 transitions. [2018-07-25 08:57:30,503 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 182 transitions. Word has length 180 [2018-07-25 08:57:30,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:30,503 INFO L472 AbstractCegarLoop]: Abstraction has 182 states and 182 transitions. [2018-07-25 08:57:30,503 INFO L473 AbstractCegarLoop]: Interpolant automaton has 180 states. [2018-07-25 08:57:30,503 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 182 transitions. [2018-07-25 08:57:30,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-07-25 08:57:30,503 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:30,504 INFO L354 BasicCegarLoop]: trace histogram [178, 1, 1, 1] [2018-07-25 08:57:30,504 INFO L415 AbstractCegarLoop]: === Iteration 179 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:30,504 INFO L82 PathProgramCache]: Analyzing trace with hash 2020088800, now seen corresponding path program 178 times [2018-07-25 08:57:30,504 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:30,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:31,290 INFO L134 CoverageAnalysis]: Checked inductivity of 15931 backedges. 0 proven. 15931 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:31,290 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:31,290 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [180] total 180 [2018-07-25 08:57:31,290 INFO L451 AbstractCegarLoop]: Interpolant automaton has 181 states [2018-07-25 08:57:31,292 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 181 interpolants. [2018-07-25 08:57:31,292 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16290, Invalid=16290, Unknown=0, NotChecked=0, Total=32580 [2018-07-25 08:57:31,293 INFO L87 Difference]: Start difference. First operand 182 states and 182 transitions. Second operand 181 states. [2018-07-25 08:57:31,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:31,545 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2018-07-25 08:57:31,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2018-07-25 08:57:31,545 INFO L78 Accepts]: Start accepts. Automaton has 181 states. Word has length 181 [2018-07-25 08:57:31,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:31,546 INFO L225 Difference]: With dead ends: 185 [2018-07-25 08:57:31,546 INFO L226 Difference]: Without dead ends: 183 [2018-07-25 08:57:31,547 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16290, Invalid=16290, Unknown=0, NotChecked=0, Total=32580 [2018-07-25 08:57:31,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-07-25 08:57:31,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-07-25 08:57:31,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-07-25 08:57:31,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 183 transitions. [2018-07-25 08:57:31,549 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 183 transitions. Word has length 181 [2018-07-25 08:57:31,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:31,549 INFO L472 AbstractCegarLoop]: Abstraction has 183 states and 183 transitions. [2018-07-25 08:57:31,549 INFO L473 AbstractCegarLoop]: Interpolant automaton has 181 states. [2018-07-25 08:57:31,549 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 183 transitions. [2018-07-25 08:57:31,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-07-25 08:57:31,550 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:31,550 INFO L354 BasicCegarLoop]: trace histogram [179, 1, 1, 1] [2018-07-25 08:57:31,550 INFO L415 AbstractCegarLoop]: === Iteration 180 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:31,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1801758586, now seen corresponding path program 179 times [2018-07-25 08:57:31,550 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:31,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:32,288 INFO L134 CoverageAnalysis]: Checked inductivity of 16110 backedges. 0 proven. 16110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:32,289 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:32,289 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [181] total 181 [2018-07-25 08:57:32,289 INFO L451 AbstractCegarLoop]: Interpolant automaton has 182 states [2018-07-25 08:57:32,291 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 182 interpolants. [2018-07-25 08:57:32,291 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16471, Invalid=16471, Unknown=0, NotChecked=0, Total=32942 [2018-07-25 08:57:32,292 INFO L87 Difference]: Start difference. First operand 183 states and 183 transitions. Second operand 182 states. [2018-07-25 08:57:33,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:33,143 INFO L93 Difference]: Finished difference Result 186 states and 186 transitions. [2018-07-25 08:57:33,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2018-07-25 08:57:33,144 INFO L78 Accepts]: Start accepts. Automaton has 182 states. Word has length 182 [2018-07-25 08:57:33,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:33,144 INFO L225 Difference]: With dead ends: 186 [2018-07-25 08:57:33,144 INFO L226 Difference]: Without dead ends: 184 [2018-07-25 08:57:33,146 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=16471, Invalid=16471, Unknown=0, NotChecked=0, Total=32942 [2018-07-25 08:57:33,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-07-25 08:57:33,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2018-07-25 08:57:33,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-07-25 08:57:33,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 184 transitions. [2018-07-25 08:57:33,149 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 184 transitions. Word has length 182 [2018-07-25 08:57:33,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:33,149 INFO L472 AbstractCegarLoop]: Abstraction has 184 states and 184 transitions. [2018-07-25 08:57:33,150 INFO L473 AbstractCegarLoop]: Interpolant automaton has 182 states. [2018-07-25 08:57:33,150 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 184 transitions. [2018-07-25 08:57:33,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-07-25 08:57:33,150 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:33,150 INFO L354 BasicCegarLoop]: trace histogram [180, 1, 1, 1] [2018-07-25 08:57:33,150 INFO L415 AbstractCegarLoop]: === Iteration 181 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:33,150 INFO L82 PathProgramCache]: Analyzing trace with hash -19943264, now seen corresponding path program 180 times [2018-07-25 08:57:33,151 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:33,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:34,034 INFO L134 CoverageAnalysis]: Checked inductivity of 16290 backedges. 0 proven. 16290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:34,035 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:34,035 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [182] total 182 [2018-07-25 08:57:34,035 INFO L451 AbstractCegarLoop]: Interpolant automaton has 183 states [2018-07-25 08:57:34,037 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 183 interpolants. [2018-07-25 08:57:34,038 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16653, Invalid=16653, Unknown=0, NotChecked=0, Total=33306 [2018-07-25 08:57:34,038 INFO L87 Difference]: Start difference. First operand 184 states and 184 transitions. Second operand 183 states. [2018-07-25 08:57:34,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:34,315 INFO L93 Difference]: Finished difference Result 187 states and 187 transitions. [2018-07-25 08:57:34,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2018-07-25 08:57:34,315 INFO L78 Accepts]: Start accepts. Automaton has 183 states. Word has length 183 [2018-07-25 08:57:34,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:34,316 INFO L225 Difference]: With dead ends: 187 [2018-07-25 08:57:34,316 INFO L226 Difference]: Without dead ends: 185 [2018-07-25 08:57:34,318 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16653, Invalid=16653, Unknown=0, NotChecked=0, Total=33306 [2018-07-25 08:57:34,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-07-25 08:57:34,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-07-25 08:57:34,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-07-25 08:57:34,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2018-07-25 08:57:34,321 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 183 [2018-07-25 08:57:34,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:34,321 INFO L472 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2018-07-25 08:57:34,321 INFO L473 AbstractCegarLoop]: Interpolant automaton has 183 states. [2018-07-25 08:57:34,321 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2018-07-25 08:57:34,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-07-25 08:57:34,322 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:34,322 INFO L354 BasicCegarLoop]: trace histogram [181, 1, 1, 1] [2018-07-25 08:57:34,322 INFO L415 AbstractCegarLoop]: === Iteration 182 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:34,322 INFO L82 PathProgramCache]: Analyzing trace with hash -618243130, now seen corresponding path program 181 times [2018-07-25 08:57:34,323 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:34,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:35,173 INFO L134 CoverageAnalysis]: Checked inductivity of 16471 backedges. 0 proven. 16471 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:35,174 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:35,174 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [183] total 183 [2018-07-25 08:57:35,174 INFO L451 AbstractCegarLoop]: Interpolant automaton has 184 states [2018-07-25 08:57:35,175 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2018-07-25 08:57:35,176 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2018-07-25 08:57:35,176 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand 184 states. [2018-07-25 08:57:35,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:35,715 INFO L93 Difference]: Finished difference Result 188 states and 188 transitions. [2018-07-25 08:57:35,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2018-07-25 08:57:35,716 INFO L78 Accepts]: Start accepts. Automaton has 184 states. Word has length 184 [2018-07-25 08:57:35,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:35,716 INFO L225 Difference]: With dead ends: 188 [2018-07-25 08:57:35,716 INFO L226 Difference]: Without dead ends: 186 [2018-07-25 08:57:35,717 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2018-07-25 08:57:35,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-07-25 08:57:35,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2018-07-25 08:57:35,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2018-07-25 08:57:35,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 186 transitions. [2018-07-25 08:57:35,719 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 186 transitions. Word has length 184 [2018-07-25 08:57:35,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:35,719 INFO L472 AbstractCegarLoop]: Abstraction has 186 states and 186 transitions. [2018-07-25 08:57:35,719 INFO L473 AbstractCegarLoop]: Interpolant automaton has 184 states. [2018-07-25 08:57:35,719 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 186 transitions. [2018-07-25 08:57:35,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-07-25 08:57:35,720 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:35,720 INFO L354 BasicCegarLoop]: trace histogram [182, 1, 1, 1] [2018-07-25 08:57:35,720 INFO L415 AbstractCegarLoop]: === Iteration 183 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:35,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1985669792, now seen corresponding path program 182 times [2018-07-25 08:57:35,720 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:35,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:36,488 INFO L134 CoverageAnalysis]: Checked inductivity of 16653 backedges. 0 proven. 16653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:36,489 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:36,489 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [184] total 184 [2018-07-25 08:57:36,489 INFO L451 AbstractCegarLoop]: Interpolant automaton has 185 states [2018-07-25 08:57:36,491 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 185 interpolants. [2018-07-25 08:57:36,492 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17020, Invalid=17020, Unknown=0, NotChecked=0, Total=34040 [2018-07-25 08:57:36,492 INFO L87 Difference]: Start difference. First operand 186 states and 186 transitions. Second operand 185 states. [2018-07-25 08:57:37,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:37,168 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2018-07-25 08:57:37,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2018-07-25 08:57:37,168 INFO L78 Accepts]: Start accepts. Automaton has 185 states. Word has length 185 [2018-07-25 08:57:37,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:37,168 INFO L225 Difference]: With dead ends: 189 [2018-07-25 08:57:37,168 INFO L226 Difference]: Without dead ends: 187 [2018-07-25 08:57:37,170 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17020, Invalid=17020, Unknown=0, NotChecked=0, Total=34040 [2018-07-25 08:57:37,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-07-25 08:57:37,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-07-25 08:57:37,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-07-25 08:57:37,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2018-07-25 08:57:37,172 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 185 [2018-07-25 08:57:37,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:37,172 INFO L472 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2018-07-25 08:57:37,173 INFO L473 AbstractCegarLoop]: Interpolant automaton has 185 states. [2018-07-25 08:57:37,173 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2018-07-25 08:57:37,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-07-25 08:57:37,173 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:37,173 INFO L354 BasicCegarLoop]: trace histogram [183, 1, 1, 1] [2018-07-25 08:57:37,173 INFO L415 AbstractCegarLoop]: === Iteration 184 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:37,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1426223354, now seen corresponding path program 183 times [2018-07-25 08:57:37,173 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:37,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:38,009 INFO L134 CoverageAnalysis]: Checked inductivity of 16836 backedges. 0 proven. 16836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:38,010 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:38,010 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [185] total 185 [2018-07-25 08:57:38,010 INFO L451 AbstractCegarLoop]: Interpolant automaton has 186 states [2018-07-25 08:57:38,012 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 186 interpolants. [2018-07-25 08:57:38,013 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17205, Invalid=17205, Unknown=0, NotChecked=0, Total=34410 [2018-07-25 08:57:38,014 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand 186 states. [2018-07-25 08:57:38,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:38,260 INFO L93 Difference]: Finished difference Result 190 states and 190 transitions. [2018-07-25 08:57:38,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2018-07-25 08:57:38,260 INFO L78 Accepts]: Start accepts. Automaton has 186 states. Word has length 186 [2018-07-25 08:57:38,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:38,261 INFO L225 Difference]: With dead ends: 190 [2018-07-25 08:57:38,261 INFO L226 Difference]: Without dead ends: 188 [2018-07-25 08:57:38,262 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17205, Invalid=17205, Unknown=0, NotChecked=0, Total=34410 [2018-07-25 08:57:38,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-07-25 08:57:38,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2018-07-25 08:57:38,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2018-07-25 08:57:38,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 188 transitions. [2018-07-25 08:57:38,264 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 188 transitions. Word has length 186 [2018-07-25 08:57:38,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:38,264 INFO L472 AbstractCegarLoop]: Abstraction has 188 states and 188 transitions. [2018-07-25 08:57:38,264 INFO L473 AbstractCegarLoop]: Interpolant automaton has 186 states. [2018-07-25 08:57:38,265 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 188 transitions. [2018-07-25 08:57:38,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-07-25 08:57:38,265 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:38,265 INFO L354 BasicCegarLoop]: trace histogram [184, 1, 1, 1] [2018-07-25 08:57:38,265 INFO L415 AbstractCegarLoop]: === Iteration 185 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:38,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1263252960, now seen corresponding path program 184 times [2018-07-25 08:57:38,265 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:38,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:39,108 INFO L134 CoverageAnalysis]: Checked inductivity of 17020 backedges. 0 proven. 17020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:39,108 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:39,108 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [186] total 186 [2018-07-25 08:57:39,109 INFO L451 AbstractCegarLoop]: Interpolant automaton has 187 states [2018-07-25 08:57:39,110 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 187 interpolants. [2018-07-25 08:57:39,111 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17391, Invalid=17391, Unknown=0, NotChecked=0, Total=34782 [2018-07-25 08:57:39,111 INFO L87 Difference]: Start difference. First operand 188 states and 188 transitions. Second operand 187 states. [2018-07-25 08:57:39,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:39,713 INFO L93 Difference]: Finished difference Result 191 states and 191 transitions. [2018-07-25 08:57:39,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2018-07-25 08:57:39,713 INFO L78 Accepts]: Start accepts. Automaton has 187 states. Word has length 187 [2018-07-25 08:57:39,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:39,714 INFO L225 Difference]: With dead ends: 191 [2018-07-25 08:57:39,714 INFO L226 Difference]: Without dead ends: 189 [2018-07-25 08:57:39,715 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17391, Invalid=17391, Unknown=0, NotChecked=0, Total=34782 [2018-07-25 08:57:39,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-07-25 08:57:39,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-07-25 08:57:39,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-07-25 08:57:39,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 189 transitions. [2018-07-25 08:57:39,717 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 189 transitions. Word has length 187 [2018-07-25 08:57:39,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:39,718 INFO L472 AbstractCegarLoop]: Abstraction has 189 states and 189 transitions. [2018-07-25 08:57:39,718 INFO L473 AbstractCegarLoop]: Interpolant automaton has 187 states. [2018-07-25 08:57:39,718 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 189 transitions. [2018-07-25 08:57:39,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-07-25 08:57:39,718 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:39,718 INFO L354 BasicCegarLoop]: trace histogram [185, 1, 1, 1] [2018-07-25 08:57:39,718 INFO L415 AbstractCegarLoop]: === Iteration 186 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:39,718 INFO L82 PathProgramCache]: Analyzing trace with hash -506138042, now seen corresponding path program 185 times [2018-07-25 08:57:39,719 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:39,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:40,520 INFO L134 CoverageAnalysis]: Checked inductivity of 17205 backedges. 0 proven. 17205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:40,520 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:40,520 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [187] total 187 [2018-07-25 08:57:40,520 INFO L451 AbstractCegarLoop]: Interpolant automaton has 188 states [2018-07-25 08:57:40,522 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2018-07-25 08:57:40,523 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17578, Invalid=17578, Unknown=0, NotChecked=0, Total=35156 [2018-07-25 08:57:40,523 INFO L87 Difference]: Start difference. First operand 189 states and 189 transitions. Second operand 188 states. [2018-07-25 08:57:41,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:41,291 INFO L93 Difference]: Finished difference Result 192 states and 192 transitions. [2018-07-25 08:57:41,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2018-07-25 08:57:41,291 INFO L78 Accepts]: Start accepts. Automaton has 188 states. Word has length 188 [2018-07-25 08:57:41,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:41,292 INFO L225 Difference]: With dead ends: 192 [2018-07-25 08:57:41,292 INFO L226 Difference]: Without dead ends: 190 [2018-07-25 08:57:41,294 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17578, Invalid=17578, Unknown=0, NotChecked=0, Total=35156 [2018-07-25 08:57:41,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-07-25 08:57:41,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2018-07-25 08:57:41,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-07-25 08:57:41,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 190 transitions. [2018-07-25 08:57:41,296 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 190 transitions. Word has length 188 [2018-07-25 08:57:41,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:41,296 INFO L472 AbstractCegarLoop]: Abstraction has 190 states and 190 transitions. [2018-07-25 08:57:41,296 INFO L473 AbstractCegarLoop]: Interpolant automaton has 188 states. [2018-07-25 08:57:41,296 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 190 transitions. [2018-07-25 08:57:41,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-07-25 08:57:41,297 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:41,297 INFO L354 BasicCegarLoop]: trace histogram [186, 1, 1, 1] [2018-07-25 08:57:41,297 INFO L415 AbstractCegarLoop]: === Iteration 187 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:41,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1489587936, now seen corresponding path program 186 times [2018-07-25 08:57:41,297 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:41,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:42,121 INFO L134 CoverageAnalysis]: Checked inductivity of 17391 backedges. 0 proven. 17391 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:42,121 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:42,121 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [188] total 188 [2018-07-25 08:57:42,122 INFO L451 AbstractCegarLoop]: Interpolant automaton has 189 states [2018-07-25 08:57:42,124 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 189 interpolants. [2018-07-25 08:57:42,124 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17766, Invalid=17766, Unknown=0, NotChecked=0, Total=35532 [2018-07-25 08:57:42,125 INFO L87 Difference]: Start difference. First operand 190 states and 190 transitions. Second operand 189 states. [2018-07-25 08:57:42,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:42,428 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2018-07-25 08:57:42,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2018-07-25 08:57:42,429 INFO L78 Accepts]: Start accepts. Automaton has 189 states. Word has length 189 [2018-07-25 08:57:42,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:42,429 INFO L225 Difference]: With dead ends: 193 [2018-07-25 08:57:42,429 INFO L226 Difference]: Without dead ends: 191 [2018-07-25 08:57:42,430 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17766, Invalid=17766, Unknown=0, NotChecked=0, Total=35532 [2018-07-25 08:57:42,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-07-25 08:57:42,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-07-25 08:57:42,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-07-25 08:57:42,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 191 transitions. [2018-07-25 08:57:42,432 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 191 transitions. Word has length 189 [2018-07-25 08:57:42,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:42,433 INFO L472 AbstractCegarLoop]: Abstraction has 191 states and 191 transitions. [2018-07-25 08:57:42,433 INFO L473 AbstractCegarLoop]: Interpolant automaton has 189 states. [2018-07-25 08:57:42,433 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 191 transitions. [2018-07-25 08:57:42,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-07-25 08:57:42,433 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:42,433 INFO L354 BasicCegarLoop]: trace histogram [187, 1, 1, 1] [2018-07-25 08:57:42,433 INFO L415 AbstractCegarLoop]: === Iteration 188 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:42,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1067416186, now seen corresponding path program 187 times [2018-07-25 08:57:42,434 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:42,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:43,279 INFO L134 CoverageAnalysis]: Checked inductivity of 17578 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:43,280 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:43,280 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [189] total 189 [2018-07-25 08:57:43,280 INFO L451 AbstractCegarLoop]: Interpolant automaton has 190 states [2018-07-25 08:57:43,282 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2018-07-25 08:57:43,283 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17955, Invalid=17955, Unknown=0, NotChecked=0, Total=35910 [2018-07-25 08:57:43,283 INFO L87 Difference]: Start difference. First operand 191 states and 191 transitions. Second operand 190 states. [2018-07-25 08:57:43,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:43,627 INFO L93 Difference]: Finished difference Result 194 states and 194 transitions. [2018-07-25 08:57:43,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2018-07-25 08:57:43,627 INFO L78 Accepts]: Start accepts. Automaton has 190 states. Word has length 190 [2018-07-25 08:57:43,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:43,627 INFO L225 Difference]: With dead ends: 194 [2018-07-25 08:57:43,628 INFO L226 Difference]: Without dead ends: 192 [2018-07-25 08:57:43,629 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17955, Invalid=17955, Unknown=0, NotChecked=0, Total=35910 [2018-07-25 08:57:43,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-07-25 08:57:43,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2018-07-25 08:57:43,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-07-25 08:57:43,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 192 transitions. [2018-07-25 08:57:43,631 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 192 transitions. Word has length 190 [2018-07-25 08:57:43,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:43,631 INFO L472 AbstractCegarLoop]: Abstraction has 192 states and 192 transitions. [2018-07-25 08:57:43,631 INFO L473 AbstractCegarLoop]: Interpolant automaton has 190 states. [2018-07-25 08:57:43,631 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 192 transitions. [2018-07-25 08:57:43,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-07-25 08:57:43,631 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:43,632 INFO L354 BasicCegarLoop]: trace histogram [188, 1, 1, 1] [2018-07-25 08:57:43,632 INFO L415 AbstractCegarLoop]: === Iteration 189 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:43,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1269834656, now seen corresponding path program 188 times [2018-07-25 08:57:43,632 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:43,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:44,465 INFO L134 CoverageAnalysis]: Checked inductivity of 17766 backedges. 0 proven. 17766 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:44,466 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:44,466 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [190] total 190 [2018-07-25 08:57:44,466 INFO L451 AbstractCegarLoop]: Interpolant automaton has 191 states [2018-07-25 08:57:44,468 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 191 interpolants. [2018-07-25 08:57:44,469 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18145, Invalid=18145, Unknown=0, NotChecked=0, Total=36290 [2018-07-25 08:57:44,469 INFO L87 Difference]: Start difference. First operand 192 states and 192 transitions. Second operand 191 states. [2018-07-25 08:57:45,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:45,387 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-07-25 08:57:45,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2018-07-25 08:57:45,387 INFO L78 Accepts]: Start accepts. Automaton has 191 states. Word has length 191 [2018-07-25 08:57:45,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:45,388 INFO L225 Difference]: With dead ends: 195 [2018-07-25 08:57:45,388 INFO L226 Difference]: Without dead ends: 193 [2018-07-25 08:57:45,390 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18145, Invalid=18145, Unknown=0, NotChecked=0, Total=36290 [2018-07-25 08:57:45,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-07-25 08:57:45,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-07-25 08:57:45,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-07-25 08:57:45,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 193 transitions. [2018-07-25 08:57:45,393 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 193 transitions. Word has length 191 [2018-07-25 08:57:45,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:45,393 INFO L472 AbstractCegarLoop]: Abstraction has 193 states and 193 transitions. [2018-07-25 08:57:45,393 INFO L473 AbstractCegarLoop]: Interpolant automaton has 191 states. [2018-07-25 08:57:45,394 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 193 transitions. [2018-07-25 08:57:45,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-07-25 08:57:45,394 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:45,394 INFO L354 BasicCegarLoop]: trace histogram [189, 1, 1, 1] [2018-07-25 08:57:45,395 INFO L415 AbstractCegarLoop]: === Iteration 190 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:45,395 INFO L82 PathProgramCache]: Analyzing trace with hash 710166726, now seen corresponding path program 189 times [2018-07-25 08:57:45,395 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:45,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:46,433 INFO L134 CoverageAnalysis]: Checked inductivity of 17955 backedges. 0 proven. 17955 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:46,433 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:46,433 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [191] total 191 [2018-07-25 08:57:46,434 INFO L451 AbstractCegarLoop]: Interpolant automaton has 192 states [2018-07-25 08:57:46,436 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2018-07-25 08:57:46,437 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2018-07-25 08:57:46,437 INFO L87 Difference]: Start difference. First operand 193 states and 193 transitions. Second operand 192 states. [2018-07-25 08:57:47,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:47,579 INFO L93 Difference]: Finished difference Result 196 states and 196 transitions. [2018-07-25 08:57:47,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2018-07-25 08:57:47,580 INFO L78 Accepts]: Start accepts. Automaton has 192 states. Word has length 192 [2018-07-25 08:57:47,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:47,580 INFO L225 Difference]: With dead ends: 196 [2018-07-25 08:57:47,580 INFO L226 Difference]: Without dead ends: 194 [2018-07-25 08:57:47,582 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2018-07-25 08:57:47,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-07-25 08:57:47,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2018-07-25 08:57:47,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-07-25 08:57:47,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 194 transitions. [2018-07-25 08:57:47,584 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 194 transitions. Word has length 192 [2018-07-25 08:57:47,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:47,585 INFO L472 AbstractCegarLoop]: Abstraction has 194 states and 194 transitions. [2018-07-25 08:57:47,585 INFO L473 AbstractCegarLoop]: Interpolant automaton has 192 states. [2018-07-25 08:57:47,585 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 194 transitions. [2018-07-25 08:57:47,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-07-25 08:57:47,585 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:47,585 INFO L354 BasicCegarLoop]: trace histogram [190, 1, 1, 1] [2018-07-25 08:57:47,585 INFO L415 AbstractCegarLoop]: === Iteration 191 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:47,586 INFO L82 PathProgramCache]: Analyzing trace with hash 540330080, now seen corresponding path program 190 times [2018-07-25 08:57:47,586 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:47,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:48,570 INFO L134 CoverageAnalysis]: Checked inductivity of 18145 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:48,570 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:48,571 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [192] total 192 [2018-07-25 08:57:48,571 INFO L451 AbstractCegarLoop]: Interpolant automaton has 193 states [2018-07-25 08:57:48,573 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2018-07-25 08:57:48,575 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2018-07-25 08:57:48,575 INFO L87 Difference]: Start difference. First operand 194 states and 194 transitions. Second operand 193 states. [2018-07-25 08:57:49,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:49,203 INFO L93 Difference]: Finished difference Result 197 states and 197 transitions. [2018-07-25 08:57:49,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2018-07-25 08:57:49,204 INFO L78 Accepts]: Start accepts. Automaton has 193 states. Word has length 193 [2018-07-25 08:57:49,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:49,204 INFO L225 Difference]: With dead ends: 197 [2018-07-25 08:57:49,204 INFO L226 Difference]: Without dead ends: 195 [2018-07-25 08:57:49,206 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2018-07-25 08:57:49,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-07-25 08:57:49,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-07-25 08:57:49,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-07-25 08:57:49,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 195 transitions. [2018-07-25 08:57:49,209 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 195 transitions. Word has length 193 [2018-07-25 08:57:49,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:49,209 INFO L472 AbstractCegarLoop]: Abstraction has 195 states and 195 transitions. [2018-07-25 08:57:49,210 INFO L473 AbstractCegarLoop]: Interpolant automaton has 193 states. [2018-07-25 08:57:49,210 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 195 transitions. [2018-07-25 08:57:49,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-07-25 08:57:49,210 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:49,210 INFO L354 BasicCegarLoop]: trace histogram [191, 1, 1, 1] [2018-07-25 08:57:49,210 INFO L415 AbstractCegarLoop]: === Iteration 192 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:49,210 INFO L82 PathProgramCache]: Analyzing trace with hash -429638650, now seen corresponding path program 191 times [2018-07-25 08:57:49,211 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:49,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:50,199 INFO L134 CoverageAnalysis]: Checked inductivity of 18336 backedges. 0 proven. 18336 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:50,200 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:50,200 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [193] total 193 [2018-07-25 08:57:50,200 INFO L451 AbstractCegarLoop]: Interpolant automaton has 194 states [2018-07-25 08:57:50,203 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2018-07-25 08:57:50,205 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18721, Invalid=18721, Unknown=0, NotChecked=0, Total=37442 [2018-07-25 08:57:50,205 INFO L87 Difference]: Start difference. First operand 195 states and 195 transitions. Second operand 194 states. [2018-07-25 08:57:50,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:50,527 INFO L93 Difference]: Finished difference Result 198 states and 198 transitions. [2018-07-25 08:57:50,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2018-07-25 08:57:50,527 INFO L78 Accepts]: Start accepts. Automaton has 194 states. Word has length 194 [2018-07-25 08:57:50,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:50,528 INFO L225 Difference]: With dead ends: 198 [2018-07-25 08:57:50,528 INFO L226 Difference]: Without dead ends: 196 [2018-07-25 08:57:50,531 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18721, Invalid=18721, Unknown=0, NotChecked=0, Total=37442 [2018-07-25 08:57:50,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2018-07-25 08:57:50,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2018-07-25 08:57:50,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2018-07-25 08:57:50,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 196 transitions. [2018-07-25 08:57:50,534 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 196 transitions. Word has length 194 [2018-07-25 08:57:50,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:50,534 INFO L472 AbstractCegarLoop]: Abstraction has 196 states and 196 transitions. [2018-07-25 08:57:50,534 INFO L473 AbstractCegarLoop]: Interpolant automaton has 194 states. [2018-07-25 08:57:50,534 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 196 transitions. [2018-07-25 08:57:50,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-07-25 08:57:50,535 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:50,535 INFO L354 BasicCegarLoop]: trace histogram [192, 1, 1, 1] [2018-07-25 08:57:50,535 INFO L415 AbstractCegarLoop]: === Iteration 193 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:50,536 INFO L82 PathProgramCache]: Analyzing trace with hash -433898208, now seen corresponding path program 192 times [2018-07-25 08:57:50,536 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:50,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:51,601 INFO L134 CoverageAnalysis]: Checked inductivity of 18528 backedges. 0 proven. 18528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:51,601 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:51,601 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [194] total 194 [2018-07-25 08:57:51,601 INFO L451 AbstractCegarLoop]: Interpolant automaton has 195 states [2018-07-25 08:57:51,603 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 195 interpolants. [2018-07-25 08:57:51,603 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18915, Invalid=18915, Unknown=0, NotChecked=0, Total=37830 [2018-07-25 08:57:51,603 INFO L87 Difference]: Start difference. First operand 196 states and 196 transitions. Second operand 195 states. [2018-07-25 08:57:52,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:52,087 INFO L93 Difference]: Finished difference Result 199 states and 199 transitions. [2018-07-25 08:57:52,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2018-07-25 08:57:52,087 INFO L78 Accepts]: Start accepts. Automaton has 195 states. Word has length 195 [2018-07-25 08:57:52,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:52,088 INFO L225 Difference]: With dead ends: 199 [2018-07-25 08:57:52,088 INFO L226 Difference]: Without dead ends: 197 [2018-07-25 08:57:52,089 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=18915, Invalid=18915, Unknown=0, NotChecked=0, Total=37830 [2018-07-25 08:57:52,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-07-25 08:57:52,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-07-25 08:57:52,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-07-25 08:57:52,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 197 transitions. [2018-07-25 08:57:52,091 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 197 transitions. Word has length 195 [2018-07-25 08:57:52,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:52,091 INFO L472 AbstractCegarLoop]: Abstraction has 197 states and 197 transitions. [2018-07-25 08:57:52,092 INFO L473 AbstractCegarLoop]: Interpolant automaton has 195 states. [2018-07-25 08:57:52,092 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 197 transitions. [2018-07-25 08:57:52,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-07-25 08:57:52,092 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:52,092 INFO L354 BasicCegarLoop]: trace histogram [193, 1, 1, 1] [2018-07-25 08:57:52,092 INFO L415 AbstractCegarLoop]: === Iteration 194 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:52,092 INFO L82 PathProgramCache]: Analyzing trace with hash -565944506, now seen corresponding path program 193 times [2018-07-25 08:57:52,093 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:52,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:53,112 INFO L134 CoverageAnalysis]: Checked inductivity of 18721 backedges. 0 proven. 18721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:53,113 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:53,113 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [195] total 195 [2018-07-25 08:57:53,113 INFO L451 AbstractCegarLoop]: Interpolant automaton has 196 states [2018-07-25 08:57:53,116 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2018-07-25 08:57:53,117 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19110, Invalid=19110, Unknown=0, NotChecked=0, Total=38220 [2018-07-25 08:57:53,117 INFO L87 Difference]: Start difference. First operand 197 states and 197 transitions. Second operand 196 states. [2018-07-25 08:57:54,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:54,092 INFO L93 Difference]: Finished difference Result 200 states and 200 transitions. [2018-07-25 08:57:54,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2018-07-25 08:57:54,092 INFO L78 Accepts]: Start accepts. Automaton has 196 states. Word has length 196 [2018-07-25 08:57:54,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:54,092 INFO L225 Difference]: With dead ends: 200 [2018-07-25 08:57:54,092 INFO L226 Difference]: Without dead ends: 198 [2018-07-25 08:57:54,094 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19110, Invalid=19110, Unknown=0, NotChecked=0, Total=38220 [2018-07-25 08:57:54,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-07-25 08:57:54,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2018-07-25 08:57:54,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-07-25 08:57:54,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 198 transitions. [2018-07-25 08:57:54,097 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 198 transitions. Word has length 196 [2018-07-25 08:57:54,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:54,098 INFO L472 AbstractCegarLoop]: Abstraction has 198 states and 198 transitions. [2018-07-25 08:57:54,098 INFO L473 AbstractCegarLoop]: Interpolant automaton has 196 states. [2018-07-25 08:57:54,098 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 198 transitions. [2018-07-25 08:57:54,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-07-25 08:57:54,099 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:54,099 INFO L354 BasicCegarLoop]: trace histogram [194, 1, 1, 1] [2018-07-25 08:57:54,099 INFO L415 AbstractCegarLoop]: === Iteration 195 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:54,099 INFO L82 PathProgramCache]: Analyzing trace with hash -364412448, now seen corresponding path program 194 times [2018-07-25 08:57:54,099 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:54,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:55,248 INFO L134 CoverageAnalysis]: Checked inductivity of 18915 backedges. 0 proven. 18915 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:55,248 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:55,248 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [196] total 196 [2018-07-25 08:57:55,248 INFO L451 AbstractCegarLoop]: Interpolant automaton has 197 states [2018-07-25 08:57:55,251 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2018-07-25 08:57:55,252 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19306, Invalid=19306, Unknown=0, NotChecked=0, Total=38612 [2018-07-25 08:57:55,252 INFO L87 Difference]: Start difference. First operand 198 states and 198 transitions. Second operand 197 states. [2018-07-25 08:57:56,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:56,452 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2018-07-25 08:57:56,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2018-07-25 08:57:56,452 INFO L78 Accepts]: Start accepts. Automaton has 197 states. Word has length 197 [2018-07-25 08:57:56,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:56,453 INFO L225 Difference]: With dead ends: 201 [2018-07-25 08:57:56,453 INFO L226 Difference]: Without dead ends: 199 [2018-07-25 08:57:56,455 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=19306, Invalid=19306, Unknown=0, NotChecked=0, Total=38612 [2018-07-25 08:57:56,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-07-25 08:57:56,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-07-25 08:57:56,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-07-25 08:57:56,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 199 transitions. [2018-07-25 08:57:56,458 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 199 transitions. Word has length 197 [2018-07-25 08:57:56,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:56,458 INFO L472 AbstractCegarLoop]: Abstraction has 199 states and 199 transitions. [2018-07-25 08:57:56,458 INFO L473 AbstractCegarLoop]: Interpolant automaton has 197 states. [2018-07-25 08:57:56,458 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 199 transitions. [2018-07-25 08:57:56,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-07-25 08:57:56,458 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:56,459 INFO L354 BasicCegarLoop]: trace histogram [195, 1, 1, 1] [2018-07-25 08:57:56,459 INFO L415 AbstractCegarLoop]: === Iteration 196 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:56,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1588114054, now seen corresponding path program 195 times [2018-07-25 08:57:56,459 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:56,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:57,527 INFO L134 CoverageAnalysis]: Checked inductivity of 19110 backedges. 0 proven. 19110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:57,527 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:57,527 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [197] total 197 [2018-07-25 08:57:57,528 INFO L451 AbstractCegarLoop]: Interpolant automaton has 198 states [2018-07-25 08:57:57,530 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2018-07-25 08:57:57,531 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19503, Invalid=19503, Unknown=0, NotChecked=0, Total=39006 [2018-07-25 08:57:57,531 INFO L87 Difference]: Start difference. First operand 199 states and 199 transitions. Second operand 198 states. [2018-07-25 08:57:58,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:58,701 INFO L93 Difference]: Finished difference Result 202 states and 202 transitions. [2018-07-25 08:57:58,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2018-07-25 08:57:58,701 INFO L78 Accepts]: Start accepts. Automaton has 198 states. Word has length 198 [2018-07-25 08:57:58,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:58,701 INFO L225 Difference]: With dead ends: 202 [2018-07-25 08:57:58,701 INFO L226 Difference]: Without dead ends: 200 [2018-07-25 08:57:58,703 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=19503, Invalid=19503, Unknown=0, NotChecked=0, Total=39006 [2018-07-25 08:57:58,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2018-07-25 08:57:58,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2018-07-25 08:57:58,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2018-07-25 08:57:58,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 200 transitions. [2018-07-25 08:57:58,706 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 200 transitions. Word has length 198 [2018-07-25 08:57:58,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:58,707 INFO L472 AbstractCegarLoop]: Abstraction has 200 states and 200 transitions. [2018-07-25 08:57:58,707 INFO L473 AbstractCegarLoop]: Interpolant automaton has 198 states. [2018-07-25 08:57:58,707 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 200 transitions. [2018-07-25 08:57:58,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-07-25 08:57:58,707 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:58,708 INFO L354 BasicCegarLoop]: trace histogram [196, 1, 1, 1] [2018-07-25 08:57:58,708 INFO L415 AbstractCegarLoop]: === Iteration 197 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:58,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1986893472, now seen corresponding path program 196 times [2018-07-25 08:57:58,708 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:58,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:59,841 INFO L134 CoverageAnalysis]: Checked inductivity of 19306 backedges. 0 proven. 19306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:59,841 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:59,841 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [198] total 198 [2018-07-25 08:57:59,842 INFO L451 AbstractCegarLoop]: Interpolant automaton has 199 states [2018-07-25 08:57:59,844 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 199 interpolants. [2018-07-25 08:57:59,846 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19701, Invalid=19701, Unknown=0, NotChecked=0, Total=39402 [2018-07-25 08:57:59,846 INFO L87 Difference]: Start difference. First operand 200 states and 200 transitions. Second operand 199 states. [2018-07-25 08:58:01,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:01,119 INFO L93 Difference]: Finished difference Result 203 states and 203 transitions. [2018-07-25 08:58:01,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2018-07-25 08:58:01,119 INFO L78 Accepts]: Start accepts. Automaton has 199 states. Word has length 199 [2018-07-25 08:58:01,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:01,120 INFO L225 Difference]: With dead ends: 203 [2018-07-25 08:58:01,120 INFO L226 Difference]: Without dead ends: 201 [2018-07-25 08:58:01,122 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=19701, Invalid=19701, Unknown=0, NotChecked=0, Total=39402 [2018-07-25 08:58:01,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-07-25 08:58:01,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-07-25 08:58:01,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-07-25 08:58:01,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 201 transitions. [2018-07-25 08:58:01,126 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 201 transitions. Word has length 199 [2018-07-25 08:58:01,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:01,126 INFO L472 AbstractCegarLoop]: Abstraction has 201 states and 201 transitions. [2018-07-25 08:58:01,126 INFO L473 AbstractCegarLoop]: Interpolant automaton has 199 states. [2018-07-25 08:58:01,126 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 201 transitions. [2018-07-25 08:58:01,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-07-25 08:58:01,127 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:01,127 INFO L354 BasicCegarLoop]: trace histogram [197, 1, 1, 1] [2018-07-25 08:58:01,127 INFO L415 AbstractCegarLoop]: === Iteration 198 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:01,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1464153542, now seen corresponding path program 197 times [2018-07-25 08:58:01,128 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:01,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:02,224 INFO L134 CoverageAnalysis]: Checked inductivity of 19503 backedges. 0 proven. 19503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:02,224 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:02,224 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [199] total 199 [2018-07-25 08:58:02,225 INFO L451 AbstractCegarLoop]: Interpolant automaton has 200 states [2018-07-25 08:58:02,226 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2018-07-25 08:58:02,227 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19900, Invalid=19900, Unknown=0, NotChecked=0, Total=39800 [2018-07-25 08:58:02,227 INFO L87 Difference]: Start difference. First operand 201 states and 201 transitions. Second operand 200 states. [2018-07-25 08:58:02,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:02,978 INFO L93 Difference]: Finished difference Result 204 states and 204 transitions. [2018-07-25 08:58:02,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2018-07-25 08:58:02,978 INFO L78 Accepts]: Start accepts. Automaton has 200 states. Word has length 200 [2018-07-25 08:58:02,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:02,979 INFO L225 Difference]: With dead ends: 204 [2018-07-25 08:58:02,979 INFO L226 Difference]: Without dead ends: 202 [2018-07-25 08:58:02,980 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19900, Invalid=19900, Unknown=0, NotChecked=0, Total=39800 [2018-07-25 08:58:02,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2018-07-25 08:58:02,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2018-07-25 08:58:02,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2018-07-25 08:58:02,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 202 transitions. [2018-07-25 08:58:02,983 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 202 transitions. Word has length 200 [2018-07-25 08:58:02,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:02,984 INFO L472 AbstractCegarLoop]: Abstraction has 202 states and 202 transitions. [2018-07-25 08:58:02,984 INFO L473 AbstractCegarLoop]: Interpolant automaton has 200 states. [2018-07-25 08:58:02,984 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 202 transitions. [2018-07-25 08:58:02,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-07-25 08:58:02,985 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:02,985 INFO L354 BasicCegarLoop]: trace histogram [198, 1, 1, 1] [2018-07-25 08:58:02,985 INFO L415 AbstractCegarLoop]: === Iteration 199 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:02,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1855882400, now seen corresponding path program 198 times [2018-07-25 08:58:02,985 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:03,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:04,026 INFO L134 CoverageAnalysis]: Checked inductivity of 19701 backedges. 0 proven. 19701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:04,027 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:04,027 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [200] total 200 [2018-07-25 08:58:04,027 INFO L451 AbstractCegarLoop]: Interpolant automaton has 201 states [2018-07-25 08:58:04,029 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 201 interpolants. [2018-07-25 08:58:04,030 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20100, Invalid=20100, Unknown=0, NotChecked=0, Total=40200 [2018-07-25 08:58:04,031 INFO L87 Difference]: Start difference. First operand 202 states and 202 transitions. Second operand 201 states. [2018-07-25 08:58:04,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:04,992 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2018-07-25 08:58:04,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2018-07-25 08:58:04,992 INFO L78 Accepts]: Start accepts. Automaton has 201 states. Word has length 201 [2018-07-25 08:58:04,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:04,993 INFO L225 Difference]: With dead ends: 205 [2018-07-25 08:58:04,993 INFO L226 Difference]: Without dead ends: 203 [2018-07-25 08:58:04,995 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20100, Invalid=20100, Unknown=0, NotChecked=0, Total=40200 [2018-07-25 08:58:04,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-07-25 08:58:04,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-07-25 08:58:04,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-07-25 08:58:04,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2018-07-25 08:58:04,997 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 201 [2018-07-25 08:58:04,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:04,997 INFO L472 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2018-07-25 08:58:04,997 INFO L473 AbstractCegarLoop]: Interpolant automaton has 201 states. [2018-07-25 08:58:04,998 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2018-07-25 08:58:04,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-07-25 08:58:04,998 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:04,998 INFO L354 BasicCegarLoop]: trace histogram [199, 1, 1, 1] [2018-07-25 08:58:04,998 INFO L415 AbstractCegarLoop]: === Iteration 200 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:04,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1697781498, now seen corresponding path program 199 times [2018-07-25 08:58:04,998 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:05,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:06,101 INFO L134 CoverageAnalysis]: Checked inductivity of 19900 backedges. 0 proven. 19900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:06,101 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:06,101 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [201] total 201 [2018-07-25 08:58:06,101 INFO L451 AbstractCegarLoop]: Interpolant automaton has 202 states [2018-07-25 08:58:06,104 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 202 interpolants. [2018-07-25 08:58:06,105 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20301, Invalid=20301, Unknown=0, NotChecked=0, Total=40602 [2018-07-25 08:58:06,105 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand 202 states. [2018-07-25 08:58:07,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:07,027 INFO L93 Difference]: Finished difference Result 206 states and 206 transitions. [2018-07-25 08:58:07,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2018-07-25 08:58:07,027 INFO L78 Accepts]: Start accepts. Automaton has 202 states. Word has length 202 [2018-07-25 08:58:07,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:07,027 INFO L225 Difference]: With dead ends: 206 [2018-07-25 08:58:07,027 INFO L226 Difference]: Without dead ends: 204 [2018-07-25 08:58:07,029 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20301, Invalid=20301, Unknown=0, NotChecked=0, Total=40602 [2018-07-25 08:58:07,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2018-07-25 08:58:07,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2018-07-25 08:58:07,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2018-07-25 08:58:07,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 204 transitions. [2018-07-25 08:58:07,031 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 204 transitions. Word has length 202 [2018-07-25 08:58:07,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:07,032 INFO L472 AbstractCegarLoop]: Abstraction has 204 states and 204 transitions. [2018-07-25 08:58:07,032 INFO L473 AbstractCegarLoop]: Interpolant automaton has 202 states. [2018-07-25 08:58:07,032 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 204 transitions. [2018-07-25 08:58:07,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-07-25 08:58:07,032 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:07,032 INFO L354 BasicCegarLoop]: trace histogram [200, 1, 1, 1] [2018-07-25 08:58:07,032 INFO L415 AbstractCegarLoop]: === Iteration 201 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:07,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1091620832, now seen corresponding path program 200 times [2018-07-25 08:58:07,033 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:07,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:08,039 INFO L134 CoverageAnalysis]: Checked inductivity of 20100 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:08,039 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:08,039 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [202] total 202 [2018-07-25 08:58:08,039 INFO L451 AbstractCegarLoop]: Interpolant automaton has 203 states [2018-07-25 08:58:08,042 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2018-07-25 08:58:08,043 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20503, Invalid=20503, Unknown=0, NotChecked=0, Total=41006 [2018-07-25 08:58:08,043 INFO L87 Difference]: Start difference. First operand 204 states and 204 transitions. Second operand 203 states. [2018-07-25 08:58:08,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:08,857 INFO L93 Difference]: Finished difference Result 207 states and 207 transitions. [2018-07-25 08:58:08,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2018-07-25 08:58:08,857 INFO L78 Accepts]: Start accepts. Automaton has 203 states. Word has length 203 [2018-07-25 08:58:08,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:08,857 INFO L225 Difference]: With dead ends: 207 [2018-07-25 08:58:08,857 INFO L226 Difference]: Without dead ends: 205 [2018-07-25 08:58:08,859 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20503, Invalid=20503, Unknown=0, NotChecked=0, Total=41006 [2018-07-25 08:58:08,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-07-25 08:58:08,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-07-25 08:58:08,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-07-25 08:58:08,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 205 transitions. [2018-07-25 08:58:08,862 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 205 transitions. Word has length 203 [2018-07-25 08:58:08,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:08,862 INFO L472 AbstractCegarLoop]: Abstraction has 205 states and 205 transitions. [2018-07-25 08:58:08,862 INFO L473 AbstractCegarLoop]: Interpolant automaton has 203 states. [2018-07-25 08:58:08,862 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 205 transitions. [2018-07-25 08:58:08,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-07-25 08:58:08,863 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:08,863 INFO L354 BasicCegarLoop]: trace histogram [201, 1, 1, 1] [2018-07-25 08:58:08,863 INFO L415 AbstractCegarLoop]: === Iteration 202 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:08,863 INFO L82 PathProgramCache]: Analyzing trace with hash 519490630, now seen corresponding path program 201 times [2018-07-25 08:58:08,863 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:09,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:09,984 INFO L134 CoverageAnalysis]: Checked inductivity of 20301 backedges. 0 proven. 20301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:09,984 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:09,984 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [203] total 203 [2018-07-25 08:58:09,985 INFO L451 AbstractCegarLoop]: Interpolant automaton has 204 states [2018-07-25 08:58:09,987 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2018-07-25 08:58:09,989 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20706, Invalid=20706, Unknown=0, NotChecked=0, Total=41412 [2018-07-25 08:58:09,989 INFO L87 Difference]: Start difference. First operand 205 states and 205 transitions. Second operand 204 states. [2018-07-25 08:58:10,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:10,997 INFO L93 Difference]: Finished difference Result 208 states and 208 transitions. [2018-07-25 08:58:10,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2018-07-25 08:58:10,998 INFO L78 Accepts]: Start accepts. Automaton has 204 states. Word has length 204 [2018-07-25 08:58:10,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:10,998 INFO L225 Difference]: With dead ends: 208 [2018-07-25 08:58:10,998 INFO L226 Difference]: Without dead ends: 206 [2018-07-25 08:58:11,000 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20706, Invalid=20706, Unknown=0, NotChecked=0, Total=41412 [2018-07-25 08:58:11,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2018-07-25 08:58:11,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2018-07-25 08:58:11,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2018-07-25 08:58:11,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 206 transitions. [2018-07-25 08:58:11,003 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 206 transitions. Word has length 204 [2018-07-25 08:58:11,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:11,003 INFO L472 AbstractCegarLoop]: Abstraction has 206 states and 206 transitions. [2018-07-25 08:58:11,003 INFO L473 AbstractCegarLoop]: Interpolant automaton has 204 states. [2018-07-25 08:58:11,003 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 206 transitions. [2018-07-25 08:58:11,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-07-25 08:58:11,004 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:11,004 INFO L354 BasicCegarLoop]: trace histogram [202, 1, 1, 1] [2018-07-25 08:58:11,004 INFO L415 AbstractCegarLoop]: === Iteration 203 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:11,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1075661600, now seen corresponding path program 202 times [2018-07-25 08:58:11,004 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:11,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:12,172 INFO L134 CoverageAnalysis]: Checked inductivity of 20503 backedges. 0 proven. 20503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:12,172 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:12,172 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [204] total 204 [2018-07-25 08:58:12,173 INFO L451 AbstractCegarLoop]: Interpolant automaton has 205 states [2018-07-25 08:58:12,175 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 205 interpolants. [2018-07-25 08:58:12,176 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20910, Invalid=20910, Unknown=0, NotChecked=0, Total=41820 [2018-07-25 08:58:12,176 INFO L87 Difference]: Start difference. First operand 206 states and 206 transitions. Second operand 205 states. [2018-07-25 08:58:13,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:13,190 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2018-07-25 08:58:13,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2018-07-25 08:58:13,191 INFO L78 Accepts]: Start accepts. Automaton has 205 states. Word has length 205 [2018-07-25 08:58:13,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:13,191 INFO L225 Difference]: With dead ends: 209 [2018-07-25 08:58:13,191 INFO L226 Difference]: Without dead ends: 207 [2018-07-25 08:58:13,192 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20910, Invalid=20910, Unknown=0, NotChecked=0, Total=41820 [2018-07-25 08:58:13,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-07-25 08:58:13,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-07-25 08:58:13,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-07-25 08:58:13,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 207 transitions. [2018-07-25 08:58:13,194 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 207 transitions. Word has length 205 [2018-07-25 08:58:13,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:13,194 INFO L472 AbstractCegarLoop]: Abstraction has 207 states and 207 transitions. [2018-07-25 08:58:13,194 INFO L473 AbstractCegarLoop]: Interpolant automaton has 205 states. [2018-07-25 08:58:13,194 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 207 transitions. [2018-07-25 08:58:13,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-07-25 08:58:13,195 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:13,195 INFO L354 BasicCegarLoop]: trace histogram [203, 1, 1, 1] [2018-07-25 08:58:13,195 INFO L415 AbstractCegarLoop]: === Iteration 204 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:13,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1014226822, now seen corresponding path program 203 times [2018-07-25 08:58:13,195 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:13,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:14,291 INFO L134 CoverageAnalysis]: Checked inductivity of 20706 backedges. 0 proven. 20706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:14,291 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:14,291 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [205] total 205 [2018-07-25 08:58:14,291 INFO L451 AbstractCegarLoop]: Interpolant automaton has 206 states [2018-07-25 08:58:14,294 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 206 interpolants. [2018-07-25 08:58:14,296 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21115, Invalid=21115, Unknown=0, NotChecked=0, Total=42230 [2018-07-25 08:58:14,296 INFO L87 Difference]: Start difference. First operand 207 states and 207 transitions. Second operand 206 states. [2018-07-25 08:58:15,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:15,263 INFO L93 Difference]: Finished difference Result 210 states and 210 transitions. [2018-07-25 08:58:15,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2018-07-25 08:58:15,263 INFO L78 Accepts]: Start accepts. Automaton has 206 states. Word has length 206 [2018-07-25 08:58:15,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:15,264 INFO L225 Difference]: With dead ends: 210 [2018-07-25 08:58:15,264 INFO L226 Difference]: Without dead ends: 208 [2018-07-25 08:58:15,266 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=21115, Invalid=21115, Unknown=0, NotChecked=0, Total=42230 [2018-07-25 08:58:15,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-07-25 08:58:15,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2018-07-25 08:58:15,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2018-07-25 08:58:15,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 208 transitions. [2018-07-25 08:58:15,268 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 208 transitions. Word has length 206 [2018-07-25 08:58:15,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:15,269 INFO L472 AbstractCegarLoop]: Abstraction has 208 states and 208 transitions. [2018-07-25 08:58:15,269 INFO L473 AbstractCegarLoop]: Interpolant automaton has 206 states. [2018-07-25 08:58:15,269 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 208 transitions. [2018-07-25 08:58:15,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-07-25 08:58:15,269 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:15,269 INFO L354 BasicCegarLoop]: trace histogram [204, 1, 1, 1] [2018-07-25 08:58:15,269 INFO L415 AbstractCegarLoop]: === Iteration 205 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:15,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1376258464, now seen corresponding path program 204 times [2018-07-25 08:58:15,270 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:15,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:16,278 INFO L134 CoverageAnalysis]: Checked inductivity of 20910 backedges. 0 proven. 20910 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:16,278 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:16,278 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [206] total 206 [2018-07-25 08:58:16,278 INFO L451 AbstractCegarLoop]: Interpolant automaton has 207 states [2018-07-25 08:58:16,281 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 207 interpolants. [2018-07-25 08:58:16,282 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21321, Invalid=21321, Unknown=0, NotChecked=0, Total=42642 [2018-07-25 08:58:16,282 INFO L87 Difference]: Start difference. First operand 208 states and 208 transitions. Second operand 207 states. [2018-07-25 08:58:17,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:17,199 INFO L93 Difference]: Finished difference Result 211 states and 211 transitions. [2018-07-25 08:58:17,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2018-07-25 08:58:17,199 INFO L78 Accepts]: Start accepts. Automaton has 207 states. Word has length 207 [2018-07-25 08:58:17,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:17,200 INFO L225 Difference]: With dead ends: 211 [2018-07-25 08:58:17,200 INFO L226 Difference]: Without dead ends: 209 [2018-07-25 08:58:17,201 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=21321, Invalid=21321, Unknown=0, NotChecked=0, Total=42642 [2018-07-25 08:58:17,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-07-25 08:58:17,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-07-25 08:58:17,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-07-25 08:58:17,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 209 transitions. [2018-07-25 08:58:17,204 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 209 transitions. Word has length 207 [2018-07-25 08:58:17,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:17,204 INFO L472 AbstractCegarLoop]: Abstraction has 209 states and 209 transitions. [2018-07-25 08:58:17,204 INFO L473 AbstractCegarLoop]: Interpolant automaton has 207 states. [2018-07-25 08:58:17,204 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 209 transitions. [2018-07-25 08:58:17,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-07-25 08:58:17,204 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:17,204 INFO L354 BasicCegarLoop]: trace histogram [205, 1, 1, 1] [2018-07-25 08:58:17,205 INFO L415 AbstractCegarLoop]: === Iteration 206 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:17,205 INFO L82 PathProgramCache]: Analyzing trace with hash -285662522, now seen corresponding path program 205 times [2018-07-25 08:58:17,205 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:17,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:18,208 INFO L134 CoverageAnalysis]: Checked inductivity of 21115 backedges. 0 proven. 21115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:18,208 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:18,208 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [207] total 207 [2018-07-25 08:58:18,209 INFO L451 AbstractCegarLoop]: Interpolant automaton has 208 states [2018-07-25 08:58:18,211 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 208 interpolants. [2018-07-25 08:58:18,212 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21528, Invalid=21528, Unknown=0, NotChecked=0, Total=43056 [2018-07-25 08:58:18,213 INFO L87 Difference]: Start difference. First operand 209 states and 209 transitions. Second operand 208 states. [2018-07-25 08:58:19,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:19,373 INFO L93 Difference]: Finished difference Result 212 states and 212 transitions. [2018-07-25 08:58:19,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2018-07-25 08:58:19,373 INFO L78 Accepts]: Start accepts. Automaton has 208 states. Word has length 208 [2018-07-25 08:58:19,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:19,373 INFO L225 Difference]: With dead ends: 212 [2018-07-25 08:58:19,373 INFO L226 Difference]: Without dead ends: 210 [2018-07-25 08:58:19,375 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=21528, Invalid=21528, Unknown=0, NotChecked=0, Total=43056 [2018-07-25 08:58:19,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2018-07-25 08:58:19,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2018-07-25 08:58:19,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2018-07-25 08:58:19,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 210 transitions. [2018-07-25 08:58:19,377 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 210 transitions. Word has length 208 [2018-07-25 08:58:19,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:19,377 INFO L472 AbstractCegarLoop]: Abstraction has 210 states and 210 transitions. [2018-07-25 08:58:19,378 INFO L473 AbstractCegarLoop]: Interpolant automaton has 208 states. [2018-07-25 08:58:19,378 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 210 transitions. [2018-07-25 08:58:19,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-07-25 08:58:19,378 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:19,378 INFO L354 BasicCegarLoop]: trace histogram [206, 1, 1, 1] [2018-07-25 08:58:19,378 INFO L415 AbstractCegarLoop]: === Iteration 207 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:19,378 INFO L82 PathProgramCache]: Analyzing trace with hash -265605536, now seen corresponding path program 206 times [2018-07-25 08:58:19,379 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:19,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:20,416 INFO L134 CoverageAnalysis]: Checked inductivity of 21321 backedges. 0 proven. 21321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:20,416 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:20,417 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [208] total 208 [2018-07-25 08:58:20,417 INFO L451 AbstractCegarLoop]: Interpolant automaton has 209 states [2018-07-25 08:58:20,419 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 209 interpolants. [2018-07-25 08:58:20,421 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21736, Invalid=21736, Unknown=0, NotChecked=0, Total=43472 [2018-07-25 08:58:20,421 INFO L87 Difference]: Start difference. First operand 210 states and 210 transitions. Second operand 209 states. [2018-07-25 08:58:21,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:21,497 INFO L93 Difference]: Finished difference Result 213 states and 213 transitions. [2018-07-25 08:58:21,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2018-07-25 08:58:21,498 INFO L78 Accepts]: Start accepts. Automaton has 209 states. Word has length 209 [2018-07-25 08:58:21,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:21,498 INFO L225 Difference]: With dead ends: 213 [2018-07-25 08:58:21,498 INFO L226 Difference]: Without dead ends: 211 [2018-07-25 08:58:21,500 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=21736, Invalid=21736, Unknown=0, NotChecked=0, Total=43472 [2018-07-25 08:58:21,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-07-25 08:58:21,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-07-25 08:58:21,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-07-25 08:58:21,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 211 transitions. [2018-07-25 08:58:21,502 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 211 transitions. Word has length 209 [2018-07-25 08:58:21,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:21,502 INFO L472 AbstractCegarLoop]: Abstraction has 211 states and 211 transitions. [2018-07-25 08:58:21,502 INFO L473 AbstractCegarLoop]: Interpolant automaton has 209 states. [2018-07-25 08:58:21,502 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 211 transitions. [2018-07-25 08:58:21,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-07-25 08:58:21,503 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:21,503 INFO L354 BasicCegarLoop]: trace histogram [207, 1, 1, 1] [2018-07-25 08:58:21,503 INFO L415 AbstractCegarLoop]: === Iteration 208 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:21,503 INFO L82 PathProgramCache]: Analyzing trace with hash 356161030, now seen corresponding path program 207 times [2018-07-25 08:58:21,503 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:21,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:22,564 INFO L134 CoverageAnalysis]: Checked inductivity of 21528 backedges. 0 proven. 21528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:22,565 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:22,565 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [209] total 209 [2018-07-25 08:58:22,565 INFO L451 AbstractCegarLoop]: Interpolant automaton has 210 states [2018-07-25 08:58:22,568 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 210 interpolants. [2018-07-25 08:58:22,569 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21945, Invalid=21945, Unknown=0, NotChecked=0, Total=43890 [2018-07-25 08:58:22,569 INFO L87 Difference]: Start difference. First operand 211 states and 211 transitions. Second operand 210 states. [2018-07-25 08:58:23,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:23,467 INFO L93 Difference]: Finished difference Result 214 states and 214 transitions. [2018-07-25 08:58:23,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2018-07-25 08:58:23,468 INFO L78 Accepts]: Start accepts. Automaton has 210 states. Word has length 210 [2018-07-25 08:58:23,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:23,468 INFO L225 Difference]: With dead ends: 214 [2018-07-25 08:58:23,468 INFO L226 Difference]: Without dead ends: 212 [2018-07-25 08:58:23,470 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=21945, Invalid=21945, Unknown=0, NotChecked=0, Total=43890 [2018-07-25 08:58:23,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2018-07-25 08:58:23,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2018-07-25 08:58:23,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2018-07-25 08:58:23,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 212 transitions. [2018-07-25 08:58:23,473 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 212 transitions. Word has length 210 [2018-07-25 08:58:23,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:23,473 INFO L472 AbstractCegarLoop]: Abstraction has 212 states and 212 transitions. [2018-07-25 08:58:23,473 INFO L473 AbstractCegarLoop]: Interpolant automaton has 210 states. [2018-07-25 08:58:23,473 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 212 transitions. [2018-07-25 08:58:23,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-07-25 08:58:23,474 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:23,474 INFO L354 BasicCegarLoop]: trace histogram [208, 1, 1, 1] [2018-07-25 08:58:23,474 INFO L415 AbstractCegarLoop]: === Iteration 209 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:23,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1843911904, now seen corresponding path program 208 times [2018-07-25 08:58:23,474 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:23,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:24,588 INFO L134 CoverageAnalysis]: Checked inductivity of 21736 backedges. 0 proven. 21736 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:24,588 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:24,588 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [210] total 210 [2018-07-25 08:58:24,589 INFO L451 AbstractCegarLoop]: Interpolant automaton has 211 states [2018-07-25 08:58:24,591 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 211 interpolants. [2018-07-25 08:58:24,592 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22155, Invalid=22155, Unknown=0, NotChecked=0, Total=44310 [2018-07-25 08:58:24,592 INFO L87 Difference]: Start difference. First operand 212 states and 212 transitions. Second operand 211 states. [2018-07-25 08:58:25,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:25,219 INFO L93 Difference]: Finished difference Result 215 states and 215 transitions. [2018-07-25 08:58:25,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2018-07-25 08:58:25,219 INFO L78 Accepts]: Start accepts. Automaton has 211 states. Word has length 211 [2018-07-25 08:58:25,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:25,220 INFO L225 Difference]: With dead ends: 215 [2018-07-25 08:58:25,220 INFO L226 Difference]: Without dead ends: 213 [2018-07-25 08:58:25,221 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22155, Invalid=22155, Unknown=0, NotChecked=0, Total=44310 [2018-07-25 08:58:25,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-07-25 08:58:25,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2018-07-25 08:58:25,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-07-25 08:58:25,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 213 transitions. [2018-07-25 08:58:25,223 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 213 transitions. Word has length 211 [2018-07-25 08:58:25,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:25,224 INFO L472 AbstractCegarLoop]: Abstraction has 213 states and 213 transitions. [2018-07-25 08:58:25,224 INFO L473 AbstractCegarLoop]: Interpolant automaton has 211 states. [2018-07-25 08:58:25,224 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 213 transitions. [2018-07-25 08:58:25,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-07-25 08:58:25,224 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:25,224 INFO L354 BasicCegarLoop]: trace histogram [209, 1, 1, 1] [2018-07-25 08:58:25,224 INFO L415 AbstractCegarLoop]: === Iteration 210 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:25,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1326696122, now seen corresponding path program 209 times [2018-07-25 08:58:25,225 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:25,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:26,301 INFO L134 CoverageAnalysis]: Checked inductivity of 21945 backedges. 0 proven. 21945 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:26,301 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:26,301 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [211] total 211 [2018-07-25 08:58:26,302 INFO L451 AbstractCegarLoop]: Interpolant automaton has 212 states [2018-07-25 08:58:26,304 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 212 interpolants. [2018-07-25 08:58:26,305 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22366, Invalid=22366, Unknown=0, NotChecked=0, Total=44732 [2018-07-25 08:58:26,305 INFO L87 Difference]: Start difference. First operand 213 states and 213 transitions. Second operand 212 states. [2018-07-25 08:58:26,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:26,879 INFO L93 Difference]: Finished difference Result 216 states and 216 transitions. [2018-07-25 08:58:26,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2018-07-25 08:58:26,879 INFO L78 Accepts]: Start accepts. Automaton has 212 states. Word has length 212 [2018-07-25 08:58:26,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:26,879 INFO L225 Difference]: With dead ends: 216 [2018-07-25 08:58:26,879 INFO L226 Difference]: Without dead ends: 214 [2018-07-25 08:58:26,881 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22366, Invalid=22366, Unknown=0, NotChecked=0, Total=44732 [2018-07-25 08:58:26,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2018-07-25 08:58:26,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2018-07-25 08:58:26,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-07-25 08:58:26,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 214 transitions. [2018-07-25 08:58:26,883 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 214 transitions. Word has length 212 [2018-07-25 08:58:26,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:26,884 INFO L472 AbstractCegarLoop]: Abstraction has 214 states and 214 transitions. [2018-07-25 08:58:26,884 INFO L473 AbstractCegarLoop]: Interpolant automaton has 212 states. [2018-07-25 08:58:26,884 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 214 transitions. [2018-07-25 08:58:26,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-07-25 08:58:26,884 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:26,884 INFO L354 BasicCegarLoop]: trace histogram [210, 1, 1, 1] [2018-07-25 08:58:26,884 INFO L415 AbstractCegarLoop]: === Iteration 211 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:26,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1822091232, now seen corresponding path program 210 times [2018-07-25 08:58:26,885 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:27,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:27,950 INFO L134 CoverageAnalysis]: Checked inductivity of 22155 backedges. 0 proven. 22155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:27,951 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:27,951 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [212] total 212 [2018-07-25 08:58:27,951 INFO L451 AbstractCegarLoop]: Interpolant automaton has 213 states [2018-07-25 08:58:27,953 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 213 interpolants. [2018-07-25 08:58:27,955 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22578, Invalid=22578, Unknown=0, NotChecked=0, Total=45156 [2018-07-25 08:58:27,955 INFO L87 Difference]: Start difference. First operand 214 states and 214 transitions. Second operand 213 states. [2018-07-25 08:58:28,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:28,843 INFO L93 Difference]: Finished difference Result 217 states and 217 transitions. [2018-07-25 08:58:28,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2018-07-25 08:58:28,844 INFO L78 Accepts]: Start accepts. Automaton has 213 states. Word has length 213 [2018-07-25 08:58:28,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:28,844 INFO L225 Difference]: With dead ends: 217 [2018-07-25 08:58:28,844 INFO L226 Difference]: Without dead ends: 215 [2018-07-25 08:58:28,847 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22578, Invalid=22578, Unknown=0, NotChecked=0, Total=45156 [2018-07-25 08:58:28,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-07-25 08:58:28,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-07-25 08:58:28,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-07-25 08:58:28,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 215 transitions. [2018-07-25 08:58:28,850 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 215 transitions. Word has length 213 [2018-07-25 08:58:28,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:28,850 INFO L472 AbstractCegarLoop]: Abstraction has 215 states and 215 transitions. [2018-07-25 08:58:28,850 INFO L473 AbstractCegarLoop]: Interpolant automaton has 213 states. [2018-07-25 08:58:28,850 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 215 transitions. [2018-07-25 08:58:28,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-07-25 08:58:28,851 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:28,851 INFO L354 BasicCegarLoop]: trace histogram [211, 1, 1, 1] [2018-07-25 08:58:28,851 INFO L415 AbstractCegarLoop]: === Iteration 212 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:28,851 INFO L82 PathProgramCache]: Analyzing trace with hash 650251398, now seen corresponding path program 211 times [2018-07-25 08:58:28,852 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:29,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:30,021 INFO L134 CoverageAnalysis]: Checked inductivity of 22366 backedges. 0 proven. 22366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:30,021 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:30,021 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [213] total 213 [2018-07-25 08:58:30,022 INFO L451 AbstractCegarLoop]: Interpolant automaton has 214 states [2018-07-25 08:58:30,023 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 214 interpolants. [2018-07-25 08:58:30,024 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22791, Invalid=22791, Unknown=0, NotChecked=0, Total=45582 [2018-07-25 08:58:30,025 INFO L87 Difference]: Start difference. First operand 215 states and 215 transitions. Second operand 214 states. [2018-07-25 08:58:31,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:31,269 INFO L93 Difference]: Finished difference Result 218 states and 218 transitions. [2018-07-25 08:58:31,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2018-07-25 08:58:31,269 INFO L78 Accepts]: Start accepts. Automaton has 214 states. Word has length 214 [2018-07-25 08:58:31,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:31,269 INFO L225 Difference]: With dead ends: 218 [2018-07-25 08:58:31,269 INFO L226 Difference]: Without dead ends: 216 [2018-07-25 08:58:31,270 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22791, Invalid=22791, Unknown=0, NotChecked=0, Total=45582 [2018-07-25 08:58:31,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2018-07-25 08:58:31,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2018-07-25 08:58:31,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2018-07-25 08:58:31,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 216 transitions. [2018-07-25 08:58:31,273 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 216 transitions. Word has length 214 [2018-07-25 08:58:31,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:31,273 INFO L472 AbstractCegarLoop]: Abstraction has 216 states and 216 transitions. [2018-07-25 08:58:31,273 INFO L473 AbstractCegarLoop]: Interpolant automaton has 214 states. [2018-07-25 08:58:31,273 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 216 transitions. [2018-07-25 08:58:31,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-07-25 08:58:31,273 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:31,274 INFO L354 BasicCegarLoop]: trace histogram [212, 1, 1, 1] [2018-07-25 08:58:31,274 INFO L415 AbstractCegarLoop]: === Iteration 213 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:31,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1317045088, now seen corresponding path program 212 times [2018-07-25 08:58:31,274 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:31,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:32,349 INFO L134 CoverageAnalysis]: Checked inductivity of 22578 backedges. 0 proven. 22578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:32,349 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:32,350 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [214] total 214 [2018-07-25 08:58:32,350 INFO L451 AbstractCegarLoop]: Interpolant automaton has 215 states [2018-07-25 08:58:32,352 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 215 interpolants. [2018-07-25 08:58:32,354 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23005, Invalid=23005, Unknown=0, NotChecked=0, Total=46010 [2018-07-25 08:58:32,354 INFO L87 Difference]: Start difference. First operand 216 states and 216 transitions. Second operand 215 states. [2018-07-25 08:58:33,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:33,217 INFO L93 Difference]: Finished difference Result 219 states and 219 transitions. [2018-07-25 08:58:33,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 215 states. [2018-07-25 08:58:33,217 INFO L78 Accepts]: Start accepts. Automaton has 215 states. Word has length 215 [2018-07-25 08:58:33,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:33,217 INFO L225 Difference]: With dead ends: 219 [2018-07-25 08:58:33,217 INFO L226 Difference]: Without dead ends: 217 [2018-07-25 08:58:33,219 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23005, Invalid=23005, Unknown=0, NotChecked=0, Total=46010 [2018-07-25 08:58:33,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-07-25 08:58:33,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-07-25 08:58:33,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-07-25 08:58:33,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 217 transitions. [2018-07-25 08:58:33,221 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 217 transitions. Word has length 215 [2018-07-25 08:58:33,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:33,222 INFO L472 AbstractCegarLoop]: Abstraction has 217 states and 217 transitions. [2018-07-25 08:58:33,222 INFO L473 AbstractCegarLoop]: Interpolant automaton has 215 states. [2018-07-25 08:58:33,222 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 217 transitions. [2018-07-25 08:58:33,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-07-25 08:58:33,222 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:33,222 INFO L354 BasicCegarLoop]: trace histogram [213, 1, 1, 1] [2018-07-25 08:58:33,222 INFO L415 AbstractCegarLoop]: === Iteration 214 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:33,223 INFO L82 PathProgramCache]: Analyzing trace with hash 2121273286, now seen corresponding path program 213 times [2018-07-25 08:58:33,223 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:33,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:34,347 INFO L134 CoverageAnalysis]: Checked inductivity of 22791 backedges. 0 proven. 22791 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:34,347 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:34,347 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [215] total 215 [2018-07-25 08:58:34,347 INFO L451 AbstractCegarLoop]: Interpolant automaton has 216 states [2018-07-25 08:58:34,349 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2018-07-25 08:58:34,350 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23220, Invalid=23220, Unknown=0, NotChecked=0, Total=46440 [2018-07-25 08:58:34,350 INFO L87 Difference]: Start difference. First operand 217 states and 217 transitions. Second operand 216 states. [2018-07-25 08:58:34,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:34,708 INFO L93 Difference]: Finished difference Result 220 states and 220 transitions. [2018-07-25 08:58:34,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 216 states. [2018-07-25 08:58:34,708 INFO L78 Accepts]: Start accepts. Automaton has 216 states. Word has length 216 [2018-07-25 08:58:34,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:34,709 INFO L225 Difference]: With dead ends: 220 [2018-07-25 08:58:34,709 INFO L226 Difference]: Without dead ends: 218 [2018-07-25 08:58:34,710 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23220, Invalid=23220, Unknown=0, NotChecked=0, Total=46440 [2018-07-25 08:58:34,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-07-25 08:58:34,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2018-07-25 08:58:34,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2018-07-25 08:58:34,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 218 transitions. [2018-07-25 08:58:34,712 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 218 transitions. Word has length 216 [2018-07-25 08:58:34,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:34,712 INFO L472 AbstractCegarLoop]: Abstraction has 218 states and 218 transitions. [2018-07-25 08:58:34,712 INFO L473 AbstractCegarLoop]: Interpolant automaton has 216 states. [2018-07-25 08:58:34,712 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 218 transitions. [2018-07-25 08:58:34,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-07-25 08:58:34,713 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:34,713 INFO L354 BasicCegarLoop]: trace histogram [214, 1, 1, 1] [2018-07-25 08:58:34,713 INFO L415 AbstractCegarLoop]: === Iteration 215 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:34,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1334960480, now seen corresponding path program 214 times [2018-07-25 08:58:34,713 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:34,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:35,819 INFO L134 CoverageAnalysis]: Checked inductivity of 23005 backedges. 0 proven. 23005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:35,819 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:35,819 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [216] total 216 [2018-07-25 08:58:35,819 INFO L451 AbstractCegarLoop]: Interpolant automaton has 217 states [2018-07-25 08:58:35,822 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 217 interpolants. [2018-07-25 08:58:35,823 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23436, Invalid=23436, Unknown=0, NotChecked=0, Total=46872 [2018-07-25 08:58:35,823 INFO L87 Difference]: Start difference. First operand 218 states and 218 transitions. Second operand 217 states. [2018-07-25 08:58:36,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:36,546 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2018-07-25 08:58:36,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 217 states. [2018-07-25 08:58:36,546 INFO L78 Accepts]: Start accepts. Automaton has 217 states. Word has length 217 [2018-07-25 08:58:36,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:36,547 INFO L225 Difference]: With dead ends: 221 [2018-07-25 08:58:36,547 INFO L226 Difference]: Without dead ends: 219 [2018-07-25 08:58:36,549 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23436, Invalid=23436, Unknown=0, NotChecked=0, Total=46872 [2018-07-25 08:58:36,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-07-25 08:58:36,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-07-25 08:58:36,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-07-25 08:58:36,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 219 transitions. [2018-07-25 08:58:36,551 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 219 transitions. Word has length 217 [2018-07-25 08:58:36,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:36,551 INFO L472 AbstractCegarLoop]: Abstraction has 219 states and 219 transitions. [2018-07-25 08:58:36,551 INFO L473 AbstractCegarLoop]: Interpolant automaton has 217 states. [2018-07-25 08:58:36,551 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 219 transitions. [2018-07-25 08:58:36,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-07-25 08:58:36,552 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:36,552 INFO L354 BasicCegarLoop]: trace histogram [215, 1, 1, 1] [2018-07-25 08:58:36,552 INFO L415 AbstractCegarLoop]: === Iteration 216 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:36,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1565900026, now seen corresponding path program 215 times [2018-07-25 08:58:36,552 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:36,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:37,709 INFO L134 CoverageAnalysis]: Checked inductivity of 23220 backedges. 0 proven. 23220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:37,710 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:37,710 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [217] total 217 [2018-07-25 08:58:37,710 INFO L451 AbstractCegarLoop]: Interpolant automaton has 218 states [2018-07-25 08:58:37,712 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 218 interpolants. [2018-07-25 08:58:37,712 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23653, Invalid=23653, Unknown=0, NotChecked=0, Total=47306 [2018-07-25 08:58:37,713 INFO L87 Difference]: Start difference. First operand 219 states and 219 transitions. Second operand 218 states. [2018-07-25 08:58:38,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:38,964 INFO L93 Difference]: Finished difference Result 222 states and 222 transitions. [2018-07-25 08:58:38,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2018-07-25 08:58:38,964 INFO L78 Accepts]: Start accepts. Automaton has 218 states. Word has length 218 [2018-07-25 08:58:38,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:38,965 INFO L225 Difference]: With dead ends: 222 [2018-07-25 08:58:38,965 INFO L226 Difference]: Without dead ends: 220 [2018-07-25 08:58:38,966 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23653, Invalid=23653, Unknown=0, NotChecked=0, Total=47306 [2018-07-25 08:58:38,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2018-07-25 08:58:38,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2018-07-25 08:58:38,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2018-07-25 08:58:38,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 220 transitions. [2018-07-25 08:58:38,968 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 220 transitions. Word has length 218 [2018-07-25 08:58:38,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:38,968 INFO L472 AbstractCegarLoop]: Abstraction has 220 states and 220 transitions. [2018-07-25 08:58:38,968 INFO L473 AbstractCegarLoop]: Interpolant automaton has 218 states. [2018-07-25 08:58:38,968 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 220 transitions. [2018-07-25 08:58:38,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-07-25 08:58:38,969 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:38,969 INFO L354 BasicCegarLoop]: trace histogram [216, 1, 1, 1] [2018-07-25 08:58:38,969 INFO L415 AbstractCegarLoop]: === Iteration 217 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:38,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1298262496, now seen corresponding path program 216 times [2018-07-25 08:58:38,969 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:39,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:40,116 INFO L134 CoverageAnalysis]: Checked inductivity of 23436 backedges. 0 proven. 23436 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:40,116 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:40,116 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [218] total 218 [2018-07-25 08:58:40,116 INFO L451 AbstractCegarLoop]: Interpolant automaton has 219 states [2018-07-25 08:58:40,119 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 219 interpolants. [2018-07-25 08:58:40,120 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23871, Invalid=23871, Unknown=0, NotChecked=0, Total=47742 [2018-07-25 08:58:40,120 INFO L87 Difference]: Start difference. First operand 220 states and 220 transitions. Second operand 219 states. [2018-07-25 08:58:41,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:41,074 INFO L93 Difference]: Finished difference Result 223 states and 223 transitions. [2018-07-25 08:58:41,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 219 states. [2018-07-25 08:58:41,074 INFO L78 Accepts]: Start accepts. Automaton has 219 states. Word has length 219 [2018-07-25 08:58:41,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:41,075 INFO L225 Difference]: With dead ends: 223 [2018-07-25 08:58:41,075 INFO L226 Difference]: Without dead ends: 221 [2018-07-25 08:58:41,076 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23871, Invalid=23871, Unknown=0, NotChecked=0, Total=47742 [2018-07-25 08:58:41,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-07-25 08:58:41,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2018-07-25 08:58:41,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-07-25 08:58:41,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 221 transitions. [2018-07-25 08:58:41,079 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 221 transitions. Word has length 219 [2018-07-25 08:58:41,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:41,080 INFO L472 AbstractCegarLoop]: Abstraction has 221 states and 221 transitions. [2018-07-25 08:58:41,080 INFO L473 AbstractCegarLoop]: Interpolant automaton has 219 states. [2018-07-25 08:58:41,080 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 221 transitions. [2018-07-25 08:58:41,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-07-25 08:58:41,080 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:41,080 INFO L354 BasicCegarLoop]: trace histogram [217, 1, 1, 1] [2018-07-25 08:58:41,080 INFO L415 AbstractCegarLoop]: === Iteration 218 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:41,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1591433658, now seen corresponding path program 217 times [2018-07-25 08:58:41,081 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:41,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:42,253 INFO L134 CoverageAnalysis]: Checked inductivity of 23653 backedges. 0 proven. 23653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:42,253 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:42,253 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [219] total 219 [2018-07-25 08:58:42,253 INFO L451 AbstractCegarLoop]: Interpolant automaton has 220 states [2018-07-25 08:58:42,255 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 220 interpolants. [2018-07-25 08:58:42,256 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24090, Invalid=24090, Unknown=0, NotChecked=0, Total=48180 [2018-07-25 08:58:42,256 INFO L87 Difference]: Start difference. First operand 221 states and 221 transitions. Second operand 220 states. [2018-07-25 08:58:43,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:43,012 INFO L93 Difference]: Finished difference Result 224 states and 224 transitions. [2018-07-25 08:58:43,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 220 states. [2018-07-25 08:58:43,012 INFO L78 Accepts]: Start accepts. Automaton has 220 states. Word has length 220 [2018-07-25 08:58:43,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:43,012 INFO L225 Difference]: With dead ends: 224 [2018-07-25 08:58:43,013 INFO L226 Difference]: Without dead ends: 222 [2018-07-25 08:58:43,014 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=24090, Invalid=24090, Unknown=0, NotChecked=0, Total=48180 [2018-07-25 08:58:43,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-07-25 08:58:43,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2018-07-25 08:58:43,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2018-07-25 08:58:43,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 222 transitions. [2018-07-25 08:58:43,016 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 222 transitions. Word has length 220 [2018-07-25 08:58:43,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:43,016 INFO L472 AbstractCegarLoop]: Abstraction has 222 states and 222 transitions. [2018-07-25 08:58:43,016 INFO L473 AbstractCegarLoop]: Interpolant automaton has 220 states. [2018-07-25 08:58:43,016 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 222 transitions. [2018-07-25 08:58:43,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-07-25 08:58:43,017 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:43,017 INFO L354 BasicCegarLoop]: trace histogram [218, 1, 1, 1] [2018-07-25 08:58:43,017 INFO L415 AbstractCegarLoop]: === Iteration 219 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:43,017 INFO L82 PathProgramCache]: Analyzing trace with hash -2089805088, now seen corresponding path program 218 times [2018-07-25 08:58:43,017 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:43,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:44,183 INFO L134 CoverageAnalysis]: Checked inductivity of 23871 backedges. 0 proven. 23871 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:44,184 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:44,184 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [220] total 220 [2018-07-25 08:58:44,184 INFO L451 AbstractCegarLoop]: Interpolant automaton has 221 states [2018-07-25 08:58:44,187 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 221 interpolants. [2018-07-25 08:58:44,188 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24310, Invalid=24310, Unknown=0, NotChecked=0, Total=48620 [2018-07-25 08:58:44,188 INFO L87 Difference]: Start difference. First operand 222 states and 222 transitions. Second operand 221 states. [2018-07-25 08:58:45,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:45,601 INFO L93 Difference]: Finished difference Result 225 states and 225 transitions. [2018-07-25 08:58:45,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 221 states. [2018-07-25 08:58:45,601 INFO L78 Accepts]: Start accepts. Automaton has 221 states. Word has length 221 [2018-07-25 08:58:45,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:45,601 INFO L225 Difference]: With dead ends: 225 [2018-07-25 08:58:45,602 INFO L226 Difference]: Without dead ends: 223 [2018-07-25 08:58:45,604 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=24310, Invalid=24310, Unknown=0, NotChecked=0, Total=48620 [2018-07-25 08:58:45,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-07-25 08:58:45,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-07-25 08:58:45,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-07-25 08:58:45,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 223 transitions. [2018-07-25 08:58:45,606 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 223 transitions. Word has length 221 [2018-07-25 08:58:45,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:45,606 INFO L472 AbstractCegarLoop]: Abstraction has 223 states and 223 transitions. [2018-07-25 08:58:45,606 INFO L473 AbstractCegarLoop]: Interpolant automaton has 221 states. [2018-07-25 08:58:45,606 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 223 transitions. [2018-07-25 08:58:45,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-07-25 08:58:45,607 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:45,607 INFO L354 BasicCegarLoop]: trace histogram [219, 1, 1, 1] [2018-07-25 08:58:45,607 INFO L415 AbstractCegarLoop]: === Iteration 220 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:45,607 INFO L82 PathProgramCache]: Analyzing trace with hash -359450234, now seen corresponding path program 219 times [2018-07-25 08:58:45,607 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:45,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:46,792 INFO L134 CoverageAnalysis]: Checked inductivity of 24090 backedges. 0 proven. 24090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:46,793 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:46,793 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [221] total 221 [2018-07-25 08:58:46,793 INFO L451 AbstractCegarLoop]: Interpolant automaton has 222 states [2018-07-25 08:58:46,795 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 222 interpolants. [2018-07-25 08:58:46,796 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24531, Invalid=24531, Unknown=0, NotChecked=0, Total=49062 [2018-07-25 08:58:46,796 INFO L87 Difference]: Start difference. First operand 223 states and 223 transitions. Second operand 222 states. [2018-07-25 08:58:47,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:47,291 INFO L93 Difference]: Finished difference Result 226 states and 226 transitions. [2018-07-25 08:58:47,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 222 states. [2018-07-25 08:58:47,291 INFO L78 Accepts]: Start accepts. Automaton has 222 states. Word has length 222 [2018-07-25 08:58:47,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:47,292 INFO L225 Difference]: With dead ends: 226 [2018-07-25 08:58:47,292 INFO L226 Difference]: Without dead ends: 224 [2018-07-25 08:58:47,293 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=24531, Invalid=24531, Unknown=0, NotChecked=0, Total=49062 [2018-07-25 08:58:47,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2018-07-25 08:58:47,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2018-07-25 08:58:47,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2018-07-25 08:58:47,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 224 transitions. [2018-07-25 08:58:47,295 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 224 transitions. Word has length 222 [2018-07-25 08:58:47,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:47,295 INFO L472 AbstractCegarLoop]: Abstraction has 224 states and 224 transitions. [2018-07-25 08:58:47,295 INFO L473 AbstractCegarLoop]: Interpolant automaton has 222 states. [2018-07-25 08:58:47,295 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 224 transitions. [2018-07-25 08:58:47,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-07-25 08:58:47,296 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:47,296 INFO L354 BasicCegarLoop]: trace histogram [220, 1, 1, 1] [2018-07-25 08:58:47,296 INFO L415 AbstractCegarLoop]: === Iteration 221 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:47,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1741942688, now seen corresponding path program 220 times [2018-07-25 08:58:47,296 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:47,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:48,476 INFO L134 CoverageAnalysis]: Checked inductivity of 24310 backedges. 0 proven. 24310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:48,476 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:48,476 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [222] total 222 [2018-07-25 08:58:48,477 INFO L451 AbstractCegarLoop]: Interpolant automaton has 223 states [2018-07-25 08:58:48,479 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 223 interpolants. [2018-07-25 08:58:48,480 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24753, Invalid=24753, Unknown=0, NotChecked=0, Total=49506 [2018-07-25 08:58:48,481 INFO L87 Difference]: Start difference. First operand 224 states and 224 transitions. Second operand 223 states. [2018-07-25 08:58:49,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:49,307 INFO L93 Difference]: Finished difference Result 227 states and 227 transitions. [2018-07-25 08:58:49,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2018-07-25 08:58:49,307 INFO L78 Accepts]: Start accepts. Automaton has 223 states. Word has length 223 [2018-07-25 08:58:49,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:49,308 INFO L225 Difference]: With dead ends: 227 [2018-07-25 08:58:49,308 INFO L226 Difference]: Without dead ends: 225 [2018-07-25 08:58:49,310 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=24753, Invalid=24753, Unknown=0, NotChecked=0, Total=49506 [2018-07-25 08:58:49,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-07-25 08:58:49,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2018-07-25 08:58:49,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-07-25 08:58:49,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 225 transitions. [2018-07-25 08:58:49,312 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 225 transitions. Word has length 223 [2018-07-25 08:58:49,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:49,312 INFO L472 AbstractCegarLoop]: Abstraction has 225 states and 225 transitions. [2018-07-25 08:58:49,312 INFO L473 AbstractCegarLoop]: Interpolant automaton has 223 states. [2018-07-25 08:58:49,312 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 225 transitions. [2018-07-25 08:58:49,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-07-25 08:58:49,313 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:49,313 INFO L354 BasicCegarLoop]: trace histogram [221, 1, 1, 1] [2018-07-25 08:58:49,313 INFO L415 AbstractCegarLoop]: === Iteration 222 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:49,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1834353466, now seen corresponding path program 221 times [2018-07-25 08:58:49,313 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:49,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:50,532 INFO L134 CoverageAnalysis]: Checked inductivity of 24531 backedges. 0 proven. 24531 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:50,532 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:50,532 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [223] total 223 [2018-07-25 08:58:50,532 INFO L451 AbstractCegarLoop]: Interpolant automaton has 224 states [2018-07-25 08:58:50,534 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 224 interpolants. [2018-07-25 08:58:50,535 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24976, Invalid=24976, Unknown=0, NotChecked=0, Total=49952 [2018-07-25 08:58:50,535 INFO L87 Difference]: Start difference. First operand 225 states and 225 transitions. Second operand 224 states. [2018-07-25 08:58:51,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:51,908 INFO L93 Difference]: Finished difference Result 228 states and 228 transitions. [2018-07-25 08:58:51,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 224 states. [2018-07-25 08:58:51,908 INFO L78 Accepts]: Start accepts. Automaton has 224 states. Word has length 224 [2018-07-25 08:58:51,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:51,908 INFO L225 Difference]: With dead ends: 228 [2018-07-25 08:58:51,908 INFO L226 Difference]: Without dead ends: 226 [2018-07-25 08:58:51,909 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=24976, Invalid=24976, Unknown=0, NotChecked=0, Total=49952 [2018-07-25 08:58:51,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-07-25 08:58:51,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2018-07-25 08:58:51,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2018-07-25 08:58:51,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 226 transitions. [2018-07-25 08:58:51,912 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 226 transitions. Word has length 224 [2018-07-25 08:58:51,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:51,912 INFO L472 AbstractCegarLoop]: Abstraction has 226 states and 226 transitions. [2018-07-25 08:58:51,912 INFO L473 AbstractCegarLoop]: Interpolant automaton has 224 states. [2018-07-25 08:58:51,912 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 226 transitions. [2018-07-25 08:58:51,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-07-25 08:58:51,912 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:51,913 INFO L354 BasicCegarLoop]: trace histogram [222, 1, 1, 1] [2018-07-25 08:58:51,913 INFO L415 AbstractCegarLoop]: === Iteration 223 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:51,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1030384544, now seen corresponding path program 222 times [2018-07-25 08:58:51,913 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:52,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:53,121 INFO L134 CoverageAnalysis]: Checked inductivity of 24753 backedges. 0 proven. 24753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:53,122 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:53,122 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [224] total 224 [2018-07-25 08:58:53,122 INFO L451 AbstractCegarLoop]: Interpolant automaton has 225 states [2018-07-25 08:58:53,125 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 225 interpolants. [2018-07-25 08:58:53,126 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25200, Invalid=25200, Unknown=0, NotChecked=0, Total=50400 [2018-07-25 08:58:53,126 INFO L87 Difference]: Start difference. First operand 226 states and 226 transitions. Second operand 225 states. [2018-07-25 08:58:53,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:53,972 INFO L93 Difference]: Finished difference Result 229 states and 229 transitions. [2018-07-25 08:58:53,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 225 states. [2018-07-25 08:58:53,972 INFO L78 Accepts]: Start accepts. Automaton has 225 states. Word has length 225 [2018-07-25 08:58:53,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:53,972 INFO L225 Difference]: With dead ends: 229 [2018-07-25 08:58:53,972 INFO L226 Difference]: Without dead ends: 227 [2018-07-25 08:58:53,974 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=25200, Invalid=25200, Unknown=0, NotChecked=0, Total=50400 [2018-07-25 08:58:53,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-07-25 08:58:53,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-07-25 08:58:53,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-07-25 08:58:53,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 227 transitions. [2018-07-25 08:58:53,976 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 227 transitions. Word has length 225 [2018-07-25 08:58:53,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:53,977 INFO L472 AbstractCegarLoop]: Abstraction has 227 states and 227 transitions. [2018-07-25 08:58:53,977 INFO L473 AbstractCegarLoop]: Interpolant automaton has 225 states. [2018-07-25 08:58:53,977 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 227 transitions. [2018-07-25 08:58:53,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-07-25 08:58:53,977 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:53,977 INFO L354 BasicCegarLoop]: trace histogram [223, 1, 1, 1] [2018-07-25 08:58:53,977 INFO L415 AbstractCegarLoop]: === Iteration 224 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:53,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1877151738, now seen corresponding path program 223 times [2018-07-25 08:58:53,978 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:54,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:55,215 INFO L134 CoverageAnalysis]: Checked inductivity of 24976 backedges. 0 proven. 24976 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:55,215 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:55,215 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [225] total 225 [2018-07-25 08:58:55,215 INFO L451 AbstractCegarLoop]: Interpolant automaton has 226 states [2018-07-25 08:58:55,218 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 226 interpolants. [2018-07-25 08:58:55,219 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25425, Invalid=25425, Unknown=0, NotChecked=0, Total=50850 [2018-07-25 08:58:55,219 INFO L87 Difference]: Start difference. First operand 227 states and 227 transitions. Second operand 226 states. [2018-07-25 08:58:57,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:57,119 INFO L93 Difference]: Finished difference Result 230 states and 230 transitions. [2018-07-25 08:58:57,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 226 states. [2018-07-25 08:58:57,119 INFO L78 Accepts]: Start accepts. Automaton has 226 states. Word has length 226 [2018-07-25 08:58:57,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:57,120 INFO L225 Difference]: With dead ends: 230 [2018-07-25 08:58:57,120 INFO L226 Difference]: Without dead ends: 228 [2018-07-25 08:58:57,121 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=25425, Invalid=25425, Unknown=0, NotChecked=0, Total=50850 [2018-07-25 08:58:57,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-07-25 08:58:57,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2018-07-25 08:58:57,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2018-07-25 08:58:57,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 228 transitions. [2018-07-25 08:58:57,124 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 228 transitions. Word has length 226 [2018-07-25 08:58:57,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:57,124 INFO L472 AbstractCegarLoop]: Abstraction has 228 states and 228 transitions. [2018-07-25 08:58:57,125 INFO L473 AbstractCegarLoop]: Interpolant automaton has 226 states. [2018-07-25 08:58:57,125 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 228 transitions. [2018-07-25 08:58:57,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-07-25 08:58:57,125 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:57,125 INFO L354 BasicCegarLoop]: trace histogram [224, 1, 1, 1] [2018-07-25 08:58:57,125 INFO L415 AbstractCegarLoop]: === Iteration 225 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:57,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1937836320, now seen corresponding path program 224 times [2018-07-25 08:58:57,126 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:57,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:58,560 INFO L134 CoverageAnalysis]: Checked inductivity of 25200 backedges. 0 proven. 25200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:58,560 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:58,560 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [226] total 226 [2018-07-25 08:58:58,561 INFO L451 AbstractCegarLoop]: Interpolant automaton has 227 states [2018-07-25 08:58:58,564 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 227 interpolants. [2018-07-25 08:58:58,566 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25651, Invalid=25651, Unknown=0, NotChecked=0, Total=51302 [2018-07-25 08:58:58,566 INFO L87 Difference]: Start difference. First operand 228 states and 228 transitions. Second operand 227 states. [2018-07-25 08:58:59,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:59,120 INFO L93 Difference]: Finished difference Result 231 states and 231 transitions. [2018-07-25 08:58:59,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 227 states. [2018-07-25 08:58:59,120 INFO L78 Accepts]: Start accepts. Automaton has 227 states. Word has length 227 [2018-07-25 08:58:59,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:59,120 INFO L225 Difference]: With dead ends: 231 [2018-07-25 08:58:59,120 INFO L226 Difference]: Without dead ends: 229 [2018-07-25 08:58:59,123 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=25651, Invalid=25651, Unknown=0, NotChecked=0, Total=51302 [2018-07-25 08:58:59,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-07-25 08:58:59,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2018-07-25 08:58:59,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-07-25 08:58:59,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 229 transitions. [2018-07-25 08:58:59,125 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 229 transitions. Word has length 227 [2018-07-25 08:58:59,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:59,126 INFO L472 AbstractCegarLoop]: Abstraction has 229 states and 229 transitions. [2018-07-25 08:58:59,126 INFO L473 AbstractCegarLoop]: Interpolant automaton has 227 states. [2018-07-25 08:58:59,126 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 229 transitions. [2018-07-25 08:58:59,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-07-25 08:58:59,126 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:59,126 INFO L354 BasicCegarLoop]: trace histogram [225, 1, 1, 1] [2018-07-25 08:58:59,126 INFO L415 AbstractCegarLoop]: === Iteration 226 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:59,127 INFO L82 PathProgramCache]: Analyzing trace with hash -56618170, now seen corresponding path program 225 times [2018-07-25 08:58:59,127 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:59,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:00,584 INFO L134 CoverageAnalysis]: Checked inductivity of 25425 backedges. 0 proven. 25425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:00,584 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:00,584 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [227] total 227 [2018-07-25 08:59:00,585 INFO L451 AbstractCegarLoop]: Interpolant automaton has 228 states [2018-07-25 08:59:00,587 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 228 interpolants. [2018-07-25 08:59:00,588 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25878, Invalid=25878, Unknown=0, NotChecked=0, Total=51756 [2018-07-25 08:59:00,588 INFO L87 Difference]: Start difference. First operand 229 states and 229 transitions. Second operand 228 states. [2018-07-25 08:59:02,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:02,080 INFO L93 Difference]: Finished difference Result 232 states and 232 transitions. [2018-07-25 08:59:02,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 228 states. [2018-07-25 08:59:02,080 INFO L78 Accepts]: Start accepts. Automaton has 228 states. Word has length 228 [2018-07-25 08:59:02,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:02,081 INFO L225 Difference]: With dead ends: 232 [2018-07-25 08:59:02,081 INFO L226 Difference]: Without dead ends: 230 [2018-07-25 08:59:02,082 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=25878, Invalid=25878, Unknown=0, NotChecked=0, Total=51756 [2018-07-25 08:59:02,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2018-07-25 08:59:02,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2018-07-25 08:59:02,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2018-07-25 08:59:02,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 230 transitions. [2018-07-25 08:59:02,084 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 230 transitions. Word has length 228 [2018-07-25 08:59:02,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:02,085 INFO L472 AbstractCegarLoop]: Abstraction has 230 states and 230 transitions. [2018-07-25 08:59:02,085 INFO L473 AbstractCegarLoop]: Interpolant automaton has 228 states. [2018-07-25 08:59:02,085 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 230 transitions. [2018-07-25 08:59:02,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-07-25 08:59:02,085 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:02,085 INFO L354 BasicCegarLoop]: trace histogram [226, 1, 1, 1] [2018-07-25 08:59:02,086 INFO L415 AbstractCegarLoop]: === Iteration 227 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:02,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1755165216, now seen corresponding path program 226 times [2018-07-25 08:59:02,086 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:02,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:03,367 INFO L134 CoverageAnalysis]: Checked inductivity of 25651 backedges. 0 proven. 25651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:03,367 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:03,367 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [228] total 228 [2018-07-25 08:59:03,367 INFO L451 AbstractCegarLoop]: Interpolant automaton has 229 states [2018-07-25 08:59:03,370 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 229 interpolants. [2018-07-25 08:59:03,372 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26106, Invalid=26106, Unknown=0, NotChecked=0, Total=52212 [2018-07-25 08:59:03,372 INFO L87 Difference]: Start difference. First operand 230 states and 230 transitions. Second operand 229 states. [2018-07-25 08:59:04,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:04,356 INFO L93 Difference]: Finished difference Result 233 states and 233 transitions. [2018-07-25 08:59:04,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 229 states. [2018-07-25 08:59:04,356 INFO L78 Accepts]: Start accepts. Automaton has 229 states. Word has length 229 [2018-07-25 08:59:04,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:04,356 INFO L225 Difference]: With dead ends: 233 [2018-07-25 08:59:04,356 INFO L226 Difference]: Without dead ends: 231 [2018-07-25 08:59:04,358 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=26106, Invalid=26106, Unknown=0, NotChecked=0, Total=52212 [2018-07-25 08:59:04,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-07-25 08:59:04,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2018-07-25 08:59:04,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-07-25 08:59:04,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 231 transitions. [2018-07-25 08:59:04,361 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 231 transitions. Word has length 229 [2018-07-25 08:59:04,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:04,361 INFO L472 AbstractCegarLoop]: Abstraction has 231 states and 231 transitions. [2018-07-25 08:59:04,361 INFO L473 AbstractCegarLoop]: Interpolant automaton has 229 states. [2018-07-25 08:59:04,361 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 231 transitions. [2018-07-25 08:59:04,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-07-25 08:59:04,362 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:04,362 INFO L354 BasicCegarLoop]: trace histogram [227, 1, 1, 1] [2018-07-25 08:59:04,362 INFO L415 AbstractCegarLoop]: === Iteration 228 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:04,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1424451206, now seen corresponding path program 227 times [2018-07-25 08:59:04,362 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:04,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:05,756 INFO L134 CoverageAnalysis]: Checked inductivity of 25878 backedges. 0 proven. 25878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:05,756 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:05,756 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [229] total 229 [2018-07-25 08:59:05,756 INFO L451 AbstractCegarLoop]: Interpolant automaton has 230 states [2018-07-25 08:59:05,760 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 230 interpolants. [2018-07-25 08:59:05,762 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26335, Invalid=26335, Unknown=0, NotChecked=0, Total=52670 [2018-07-25 08:59:05,762 INFO L87 Difference]: Start difference. First operand 231 states and 231 transitions. Second operand 230 states. [2018-07-25 08:59:07,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:07,963 INFO L93 Difference]: Finished difference Result 234 states and 234 transitions. [2018-07-25 08:59:07,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 230 states. [2018-07-25 08:59:07,963 INFO L78 Accepts]: Start accepts. Automaton has 230 states. Word has length 230 [2018-07-25 08:59:07,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:07,964 INFO L225 Difference]: With dead ends: 234 [2018-07-25 08:59:07,964 INFO L226 Difference]: Without dead ends: 232 [2018-07-25 08:59:07,967 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=26335, Invalid=26335, Unknown=0, NotChecked=0, Total=52670 [2018-07-25 08:59:07,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2018-07-25 08:59:07,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2018-07-25 08:59:07,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2018-07-25 08:59:07,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 232 transitions. [2018-07-25 08:59:07,970 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 232 transitions. Word has length 230 [2018-07-25 08:59:07,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:07,970 INFO L472 AbstractCegarLoop]: Abstraction has 232 states and 232 transitions. [2018-07-25 08:59:07,970 INFO L473 AbstractCegarLoop]: Interpolant automaton has 230 states. [2018-07-25 08:59:07,970 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 232 transitions. [2018-07-25 08:59:07,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-07-25 08:59:07,971 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:07,971 INFO L354 BasicCegarLoop]: trace histogram [228, 1, 1, 1] [2018-07-25 08:59:07,971 INFO L415 AbstractCegarLoop]: === Iteration 229 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:07,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1208312480, now seen corresponding path program 228 times [2018-07-25 08:59:07,971 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:08,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:09,306 INFO L134 CoverageAnalysis]: Checked inductivity of 26106 backedges. 0 proven. 26106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:09,306 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:09,307 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [230] total 230 [2018-07-25 08:59:09,307 INFO L451 AbstractCegarLoop]: Interpolant automaton has 231 states [2018-07-25 08:59:09,310 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 231 interpolants. [2018-07-25 08:59:09,311 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26565, Invalid=26565, Unknown=0, NotChecked=0, Total=53130 [2018-07-25 08:59:09,311 INFO L87 Difference]: Start difference. First operand 232 states and 232 transitions. Second operand 231 states. [2018-07-25 08:59:09,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:09,769 INFO L93 Difference]: Finished difference Result 235 states and 235 transitions. [2018-07-25 08:59:09,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 231 states. [2018-07-25 08:59:09,769 INFO L78 Accepts]: Start accepts. Automaton has 231 states. Word has length 231 [2018-07-25 08:59:09,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:09,770 INFO L225 Difference]: With dead ends: 235 [2018-07-25 08:59:09,770 INFO L226 Difference]: Without dead ends: 233 [2018-07-25 08:59:09,772 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=26565, Invalid=26565, Unknown=0, NotChecked=0, Total=53130 [2018-07-25 08:59:09,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-07-25 08:59:09,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2018-07-25 08:59:09,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-07-25 08:59:09,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 233 transitions. [2018-07-25 08:59:09,775 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 233 transitions. Word has length 231 [2018-07-25 08:59:09,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:09,775 INFO L472 AbstractCegarLoop]: Abstraction has 233 states and 233 transitions. [2018-07-25 08:59:09,775 INFO L473 AbstractCegarLoop]: Interpolant automaton has 231 states. [2018-07-25 08:59:09,775 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 233 transitions. [2018-07-25 08:59:09,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-07-25 08:59:09,776 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:09,776 INFO L354 BasicCegarLoop]: trace histogram [229, 1, 1, 1] [2018-07-25 08:59:09,776 INFO L415 AbstractCegarLoop]: === Iteration 230 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:09,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1197020730, now seen corresponding path program 229 times [2018-07-25 08:59:09,776 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:10,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:11,105 INFO L134 CoverageAnalysis]: Checked inductivity of 26335 backedges. 0 proven. 26335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:11,105 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:11,105 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [231] total 231 [2018-07-25 08:59:11,106 INFO L451 AbstractCegarLoop]: Interpolant automaton has 232 states [2018-07-25 08:59:11,109 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 232 interpolants. [2018-07-25 08:59:11,110 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26796, Invalid=26796, Unknown=0, NotChecked=0, Total=53592 [2018-07-25 08:59:11,110 INFO L87 Difference]: Start difference. First operand 233 states and 233 transitions. Second operand 232 states. [2018-07-25 08:59:12,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:12,779 INFO L93 Difference]: Finished difference Result 236 states and 236 transitions. [2018-07-25 08:59:12,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 232 states. [2018-07-25 08:59:12,779 INFO L78 Accepts]: Start accepts. Automaton has 232 states. Word has length 232 [2018-07-25 08:59:12,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:12,779 INFO L225 Difference]: With dead ends: 236 [2018-07-25 08:59:12,780 INFO L226 Difference]: Without dead ends: 234 [2018-07-25 08:59:12,782 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=26796, Invalid=26796, Unknown=0, NotChecked=0, Total=53592 [2018-07-25 08:59:12,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-07-25 08:59:12,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2018-07-25 08:59:12,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2018-07-25 08:59:12,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 234 transitions. [2018-07-25 08:59:12,784 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 234 transitions. Word has length 232 [2018-07-25 08:59:12,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:12,785 INFO L472 AbstractCegarLoop]: Abstraction has 234 states and 234 transitions. [2018-07-25 08:59:12,785 INFO L473 AbstractCegarLoop]: Interpolant automaton has 232 states. [2018-07-25 08:59:12,785 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 234 transitions. [2018-07-25 08:59:12,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-07-25 08:59:12,785 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:12,785 INFO L354 BasicCegarLoop]: trace histogram [230, 1, 1, 1] [2018-07-25 08:59:12,786 INFO L415 AbstractCegarLoop]: === Iteration 231 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:12,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1547061088, now seen corresponding path program 230 times [2018-07-25 08:59:12,786 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:13,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:14,174 INFO L134 CoverageAnalysis]: Checked inductivity of 26565 backedges. 0 proven. 26565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:14,174 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:14,174 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [232] total 232 [2018-07-25 08:59:14,175 INFO L451 AbstractCegarLoop]: Interpolant automaton has 233 states [2018-07-25 08:59:14,177 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 233 interpolants. [2018-07-25 08:59:14,178 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27028, Invalid=27028, Unknown=0, NotChecked=0, Total=54056 [2018-07-25 08:59:14,178 INFO L87 Difference]: Start difference. First operand 234 states and 234 transitions. Second operand 233 states. [2018-07-25 08:59:15,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:15,415 INFO L93 Difference]: Finished difference Result 237 states and 237 transitions. [2018-07-25 08:59:15,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 233 states. [2018-07-25 08:59:15,415 INFO L78 Accepts]: Start accepts. Automaton has 233 states. Word has length 233 [2018-07-25 08:59:15,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:15,416 INFO L225 Difference]: With dead ends: 237 [2018-07-25 08:59:15,416 INFO L226 Difference]: Without dead ends: 235 [2018-07-25 08:59:15,417 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=27028, Invalid=27028, Unknown=0, NotChecked=0, Total=54056 [2018-07-25 08:59:15,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-07-25 08:59:15,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-07-25 08:59:15,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-07-25 08:59:15,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 235 transitions. [2018-07-25 08:59:15,419 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 235 transitions. Word has length 233 [2018-07-25 08:59:15,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:15,420 INFO L472 AbstractCegarLoop]: Abstraction has 235 states and 235 transitions. [2018-07-25 08:59:15,420 INFO L473 AbstractCegarLoop]: Interpolant automaton has 233 states. [2018-07-25 08:59:15,420 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 235 transitions. [2018-07-25 08:59:15,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-07-25 08:59:15,420 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:15,420 INFO L354 BasicCegarLoop]: trace histogram [231, 1, 1, 1] [2018-07-25 08:59:15,421 INFO L415 AbstractCegarLoop]: === Iteration 232 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:15,421 INFO L82 PathProgramCache]: Analyzing trace with hash 714251526, now seen corresponding path program 231 times [2018-07-25 08:59:15,421 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:15,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:16,980 INFO L134 CoverageAnalysis]: Checked inductivity of 26796 backedges. 0 proven. 26796 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:16,981 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:16,981 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [233] total 233 [2018-07-25 08:59:16,981 INFO L451 AbstractCegarLoop]: Interpolant automaton has 234 states [2018-07-25 08:59:16,985 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 234 interpolants. [2018-07-25 08:59:16,987 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27261, Invalid=27261, Unknown=0, NotChecked=0, Total=54522 [2018-07-25 08:59:16,987 INFO L87 Difference]: Start difference. First operand 235 states and 235 transitions. Second operand 234 states. [2018-07-25 08:59:18,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:18,125 INFO L93 Difference]: Finished difference Result 238 states and 238 transitions. [2018-07-25 08:59:18,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 234 states. [2018-07-25 08:59:18,125 INFO L78 Accepts]: Start accepts. Automaton has 234 states. Word has length 234 [2018-07-25 08:59:18,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:18,125 INFO L225 Difference]: With dead ends: 238 [2018-07-25 08:59:18,125 INFO L226 Difference]: Without dead ends: 236 [2018-07-25 08:59:18,128 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=27261, Invalid=27261, Unknown=0, NotChecked=0, Total=54522 [2018-07-25 08:59:18,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2018-07-25 08:59:18,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2018-07-25 08:59:18,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2018-07-25 08:59:18,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 236 transitions. [2018-07-25 08:59:18,131 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 236 transitions. Word has length 234 [2018-07-25 08:59:18,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:18,131 INFO L472 AbstractCegarLoop]: Abstraction has 236 states and 236 transitions. [2018-07-25 08:59:18,131 INFO L473 AbstractCegarLoop]: Interpolant automaton has 234 states. [2018-07-25 08:59:18,131 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 236 transitions. [2018-07-25 08:59:18,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-07-25 08:59:18,132 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:18,132 INFO L354 BasicCegarLoop]: trace histogram [232, 1, 1, 1] [2018-07-25 08:59:18,132 INFO L415 AbstractCegarLoop]: === Iteration 233 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:18,132 INFO L82 PathProgramCache]: Analyzing trace with hash 666958880, now seen corresponding path program 232 times [2018-07-25 08:59:18,133 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:18,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:19,713 INFO L134 CoverageAnalysis]: Checked inductivity of 27028 backedges. 0 proven. 27028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:19,713 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:19,713 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [234] total 234 [2018-07-25 08:59:19,714 INFO L451 AbstractCegarLoop]: Interpolant automaton has 235 states [2018-07-25 08:59:19,717 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 235 interpolants. [2018-07-25 08:59:19,718 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27495, Invalid=27495, Unknown=0, NotChecked=0, Total=54990 [2018-07-25 08:59:19,718 INFO L87 Difference]: Start difference. First operand 236 states and 236 transitions. Second operand 235 states. [2018-07-25 08:59:21,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:21,601 INFO L93 Difference]: Finished difference Result 239 states and 239 transitions. [2018-07-25 08:59:21,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 235 states. [2018-07-25 08:59:21,601 INFO L78 Accepts]: Start accepts. Automaton has 235 states. Word has length 235 [2018-07-25 08:59:21,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:21,601 INFO L225 Difference]: With dead ends: 239 [2018-07-25 08:59:21,601 INFO L226 Difference]: Without dead ends: 237 [2018-07-25 08:59:21,603 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=27495, Invalid=27495, Unknown=0, NotChecked=0, Total=54990 [2018-07-25 08:59:21,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-07-25 08:59:21,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2018-07-25 08:59:21,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-07-25 08:59:21,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 237 transitions. [2018-07-25 08:59:21,606 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 237 transitions. Word has length 235 [2018-07-25 08:59:21,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:21,606 INFO L472 AbstractCegarLoop]: Abstraction has 237 states and 237 transitions. [2018-07-25 08:59:21,606 INFO L473 AbstractCegarLoop]: Interpolant automaton has 235 states. [2018-07-25 08:59:21,606 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 237 transitions. [2018-07-25 08:59:21,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-07-25 08:59:21,607 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:21,607 INFO L354 BasicCegarLoop]: trace histogram [233, 1, 1, 1] [2018-07-25 08:59:21,607 INFO L415 AbstractCegarLoop]: === Iteration 234 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:21,607 INFO L82 PathProgramCache]: Analyzing trace with hash -799113146, now seen corresponding path program 233 times [2018-07-25 08:59:21,607 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:21,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:23,179 INFO L134 CoverageAnalysis]: Checked inductivity of 27261 backedges. 0 proven. 27261 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:23,179 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:23,179 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [235] total 235 [2018-07-25 08:59:23,180 INFO L451 AbstractCegarLoop]: Interpolant automaton has 236 states [2018-07-25 08:59:23,183 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 236 interpolants. [2018-07-25 08:59:23,185 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27730, Invalid=27730, Unknown=0, NotChecked=0, Total=55460 [2018-07-25 08:59:23,185 INFO L87 Difference]: Start difference. First operand 237 states and 237 transitions. Second operand 236 states. [2018-07-25 08:59:24,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:24,657 INFO L93 Difference]: Finished difference Result 240 states and 240 transitions. [2018-07-25 08:59:24,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 236 states. [2018-07-25 08:59:24,657 INFO L78 Accepts]: Start accepts. Automaton has 236 states. Word has length 236 [2018-07-25 08:59:24,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:24,657 INFO L225 Difference]: With dead ends: 240 [2018-07-25 08:59:24,657 INFO L226 Difference]: Without dead ends: 238 [2018-07-25 08:59:24,660 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=27730, Invalid=27730, Unknown=0, NotChecked=0, Total=55460 [2018-07-25 08:59:24,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2018-07-25 08:59:24,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2018-07-25 08:59:24,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2018-07-25 08:59:24,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 238 transitions. [2018-07-25 08:59:24,664 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 238 transitions. Word has length 236 [2018-07-25 08:59:24,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:24,664 INFO L472 AbstractCegarLoop]: Abstraction has 238 states and 238 transitions. [2018-07-25 08:59:24,664 INFO L473 AbstractCegarLoop]: Interpolant automaton has 236 states. [2018-07-25 08:59:24,664 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 238 transitions. [2018-07-25 08:59:24,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-07-25 08:59:24,665 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:24,665 INFO L354 BasicCegarLoop]: trace histogram [234, 1, 1, 1] [2018-07-25 08:59:24,665 INFO L415 AbstractCegarLoop]: === Iteration 235 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:24,665 INFO L82 PathProgramCache]: Analyzing trace with hash 997294304, now seen corresponding path program 234 times [2018-07-25 08:59:24,665 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:25,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:26,313 INFO L134 CoverageAnalysis]: Checked inductivity of 27495 backedges. 0 proven. 27495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:26,313 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:26,313 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [236] total 236 [2018-07-25 08:59:26,314 INFO L451 AbstractCegarLoop]: Interpolant automaton has 237 states [2018-07-25 08:59:26,319 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 237 interpolants. [2018-07-25 08:59:26,321 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27966, Invalid=27966, Unknown=0, NotChecked=0, Total=55932 [2018-07-25 08:59:26,322 INFO L87 Difference]: Start difference. First operand 238 states and 238 transitions. Second operand 237 states. [2018-07-25 08:59:28,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:28,050 INFO L93 Difference]: Finished difference Result 241 states and 241 transitions. [2018-07-25 08:59:28,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 237 states. [2018-07-25 08:59:28,050 INFO L78 Accepts]: Start accepts. Automaton has 237 states. Word has length 237 [2018-07-25 08:59:28,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:28,051 INFO L225 Difference]: With dead ends: 241 [2018-07-25 08:59:28,051 INFO L226 Difference]: Without dead ends: 239 [2018-07-25 08:59:28,054 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=27966, Invalid=27966, Unknown=0, NotChecked=0, Total=55932 [2018-07-25 08:59:28,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-07-25 08:59:28,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2018-07-25 08:59:28,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-07-25 08:59:28,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2018-07-25 08:59:28,057 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 237 [2018-07-25 08:59:28,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:28,057 INFO L472 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2018-07-25 08:59:28,057 INFO L473 AbstractCegarLoop]: Interpolant automaton has 237 states. [2018-07-25 08:59:28,057 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2018-07-25 08:59:28,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-07-25 08:59:28,058 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:28,058 INFO L354 BasicCegarLoop]: trace histogram [235, 1, 1, 1] [2018-07-25 08:59:28,058 INFO L415 AbstractCegarLoop]: === Iteration 236 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:28,058 INFO L82 PathProgramCache]: Analyzing trace with hash 851350406, now seen corresponding path program 235 times [2018-07-25 08:59:28,058 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:28,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:29,746 INFO L134 CoverageAnalysis]: Checked inductivity of 27730 backedges. 0 proven. 27730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:29,746 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:29,746 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [237] total 237 [2018-07-25 08:59:29,747 INFO L451 AbstractCegarLoop]: Interpolant automaton has 238 states [2018-07-25 08:59:29,749 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 238 interpolants. [2018-07-25 08:59:29,750 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28203, Invalid=28203, Unknown=0, NotChecked=0, Total=56406 [2018-07-25 08:59:29,750 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand 238 states. [2018-07-25 08:59:31,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:31,467 INFO L93 Difference]: Finished difference Result 242 states and 242 transitions. [2018-07-25 08:59:31,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 238 states. [2018-07-25 08:59:31,468 INFO L78 Accepts]: Start accepts. Automaton has 238 states. Word has length 238 [2018-07-25 08:59:31,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:31,468 INFO L225 Difference]: With dead ends: 242 [2018-07-25 08:59:31,468 INFO L226 Difference]: Without dead ends: 240 [2018-07-25 08:59:31,469 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=28203, Invalid=28203, Unknown=0, NotChecked=0, Total=56406 [2018-07-25 08:59:31,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2018-07-25 08:59:31,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2018-07-25 08:59:31,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2018-07-25 08:59:31,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 240 transitions. [2018-07-25 08:59:31,471 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 240 transitions. Word has length 238 [2018-07-25 08:59:31,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:31,472 INFO L472 AbstractCegarLoop]: Abstraction has 240 states and 240 transitions. [2018-07-25 08:59:31,472 INFO L473 AbstractCegarLoop]: Interpolant automaton has 238 states. [2018-07-25 08:59:31,472 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 240 transitions. [2018-07-25 08:59:31,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2018-07-25 08:59:31,472 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:31,472 INFO L354 BasicCegarLoop]: trace histogram [236, 1, 1, 1] [2018-07-25 08:59:31,472 INFO L415 AbstractCegarLoop]: === Iteration 237 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:31,472 INFO L82 PathProgramCache]: Analyzing trace with hash 622056864, now seen corresponding path program 236 times [2018-07-25 08:59:31,473 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:31,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:32,899 INFO L134 CoverageAnalysis]: Checked inductivity of 27966 backedges. 0 proven. 27966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:32,900 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:32,900 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [238] total 238 [2018-07-25 08:59:32,900 INFO L451 AbstractCegarLoop]: Interpolant automaton has 239 states [2018-07-25 08:59:32,904 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 239 interpolants. [2018-07-25 08:59:32,906 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28441, Invalid=28441, Unknown=0, NotChecked=0, Total=56882 [2018-07-25 08:59:32,906 INFO L87 Difference]: Start difference. First operand 240 states and 240 transitions. Second operand 239 states. [2018-07-25 08:59:34,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:34,137 INFO L93 Difference]: Finished difference Result 243 states and 243 transitions. [2018-07-25 08:59:34,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 239 states. [2018-07-25 08:59:34,137 INFO L78 Accepts]: Start accepts. Automaton has 239 states. Word has length 239 [2018-07-25 08:59:34,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:34,137 INFO L225 Difference]: With dead ends: 243 [2018-07-25 08:59:34,137 INFO L226 Difference]: Without dead ends: 241 [2018-07-25 08:59:34,139 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=28441, Invalid=28441, Unknown=0, NotChecked=0, Total=56882 [2018-07-25 08:59:34,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-07-25 08:59:34,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2018-07-25 08:59:34,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-07-25 08:59:34,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 241 transitions. [2018-07-25 08:59:34,142 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 241 transitions. Word has length 239 [2018-07-25 08:59:34,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:34,142 INFO L472 AbstractCegarLoop]: Abstraction has 241 states and 241 transitions. [2018-07-25 08:59:34,142 INFO L473 AbstractCegarLoop]: Interpolant automaton has 239 states. [2018-07-25 08:59:34,142 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 241 transitions. [2018-07-25 08:59:34,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-07-25 08:59:34,143 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:34,143 INFO L354 BasicCegarLoop]: trace histogram [237, 1, 1, 1] [2018-07-25 08:59:34,143 INFO L415 AbstractCegarLoop]: === Iteration 238 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:34,143 INFO L82 PathProgramCache]: Analyzing trace with hash 2103891654, now seen corresponding path program 237 times [2018-07-25 08:59:34,143 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:34,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:35,718 INFO L134 CoverageAnalysis]: Checked inductivity of 28203 backedges. 0 proven. 28203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:35,718 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:35,718 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [239] total 239 [2018-07-25 08:59:35,718 INFO L451 AbstractCegarLoop]: Interpolant automaton has 240 states [2018-07-25 08:59:35,721 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 240 interpolants. [2018-07-25 08:59:35,722 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28680, Invalid=28680, Unknown=0, NotChecked=0, Total=57360 [2018-07-25 08:59:35,722 INFO L87 Difference]: Start difference. First operand 241 states and 241 transitions. Second operand 240 states. [2018-07-25 08:59:36,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:36,586 INFO L93 Difference]: Finished difference Result 244 states and 244 transitions. [2018-07-25 08:59:36,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 240 states. [2018-07-25 08:59:36,586 INFO L78 Accepts]: Start accepts. Automaton has 240 states. Word has length 240 [2018-07-25 08:59:36,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:36,586 INFO L225 Difference]: With dead ends: 244 [2018-07-25 08:59:36,586 INFO L226 Difference]: Without dead ends: 242 [2018-07-25 08:59:36,588 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=28680, Invalid=28680, Unknown=0, NotChecked=0, Total=57360 [2018-07-25 08:59:36,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2018-07-25 08:59:36,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2018-07-25 08:59:36,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2018-07-25 08:59:36,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 242 transitions. [2018-07-25 08:59:36,590 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 242 transitions. Word has length 240 [2018-07-25 08:59:36,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:36,590 INFO L472 AbstractCegarLoop]: Abstraction has 242 states and 242 transitions. [2018-07-25 08:59:36,590 INFO L473 AbstractCegarLoop]: Interpolant automaton has 240 states. [2018-07-25 08:59:36,590 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 242 transitions. [2018-07-25 08:59:36,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-07-25 08:59:36,591 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:36,591 INFO L354 BasicCegarLoop]: trace histogram [238, 1, 1, 1] [2018-07-25 08:59:36,591 INFO L415 AbstractCegarLoop]: === Iteration 239 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:36,591 INFO L82 PathProgramCache]: Analyzing trace with hash 796129888, now seen corresponding path program 238 times [2018-07-25 08:59:36,591 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:36,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:38,024 INFO L134 CoverageAnalysis]: Checked inductivity of 28441 backedges. 0 proven. 28441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:38,024 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:38,024 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [240] total 240 [2018-07-25 08:59:38,025 INFO L451 AbstractCegarLoop]: Interpolant automaton has 241 states [2018-07-25 08:59:38,028 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 241 interpolants. [2018-07-25 08:59:38,030 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28920, Invalid=28920, Unknown=0, NotChecked=0, Total=57840 [2018-07-25 08:59:38,030 INFO L87 Difference]: Start difference. First operand 242 states and 242 transitions. Second operand 241 states. [2018-07-25 08:59:39,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:39,966 INFO L93 Difference]: Finished difference Result 245 states and 245 transitions. [2018-07-25 08:59:39,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 241 states. [2018-07-25 08:59:39,966 INFO L78 Accepts]: Start accepts. Automaton has 241 states. Word has length 241 [2018-07-25 08:59:39,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:39,967 INFO L225 Difference]: With dead ends: 245 [2018-07-25 08:59:39,967 INFO L226 Difference]: Without dead ends: 243 [2018-07-25 08:59:39,969 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=28920, Invalid=28920, Unknown=0, NotChecked=0, Total=57840 [2018-07-25 08:59:39,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-07-25 08:59:39,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2018-07-25 08:59:39,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-07-25 08:59:39,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 243 transitions. [2018-07-25 08:59:39,971 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 243 transitions. Word has length 241 [2018-07-25 08:59:39,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:39,971 INFO L472 AbstractCegarLoop]: Abstraction has 243 states and 243 transitions. [2018-07-25 08:59:39,971 INFO L473 AbstractCegarLoop]: Interpolant automaton has 241 states. [2018-07-25 08:59:39,971 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 243 transitions. [2018-07-25 08:59:39,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-07-25 08:59:39,972 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:39,972 INFO L354 BasicCegarLoop]: trace histogram [239, 1, 1, 1] [2018-07-25 08:59:39,972 INFO L415 AbstractCegarLoop]: === Iteration 240 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:39,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1089779194, now seen corresponding path program 239 times [2018-07-25 08:59:39,972 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:40,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:41,601 INFO L134 CoverageAnalysis]: Checked inductivity of 28680 backedges. 0 proven. 28680 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:41,601 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:41,601 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [241] total 241 [2018-07-25 08:59:41,601 INFO L451 AbstractCegarLoop]: Interpolant automaton has 242 states [2018-07-25 08:59:41,605 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 242 interpolants. [2018-07-25 08:59:41,606 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29161, Invalid=29161, Unknown=0, NotChecked=0, Total=58322 [2018-07-25 08:59:41,606 INFO L87 Difference]: Start difference. First operand 243 states and 243 transitions. Second operand 242 states. [2018-07-25 08:59:43,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:43,490 INFO L93 Difference]: Finished difference Result 246 states and 246 transitions. [2018-07-25 08:59:43,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 242 states. [2018-07-25 08:59:43,490 INFO L78 Accepts]: Start accepts. Automaton has 242 states. Word has length 242 [2018-07-25 08:59:43,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:43,491 INFO L225 Difference]: With dead ends: 246 [2018-07-25 08:59:43,491 INFO L226 Difference]: Without dead ends: 244 [2018-07-25 08:59:43,494 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=29161, Invalid=29161, Unknown=0, NotChecked=0, Total=58322 [2018-07-25 08:59:43,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2018-07-25 08:59:43,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2018-07-25 08:59:43,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2018-07-25 08:59:43,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 244 transitions. [2018-07-25 08:59:43,496 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 244 transitions. Word has length 242 [2018-07-25 08:59:43,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:43,497 INFO L472 AbstractCegarLoop]: Abstraction has 244 states and 244 transitions. [2018-07-25 08:59:43,497 INFO L473 AbstractCegarLoop]: Interpolant automaton has 242 states. [2018-07-25 08:59:43,497 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 244 transitions. [2018-07-25 08:59:43,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-07-25 08:59:43,497 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:43,497 INFO L354 BasicCegarLoop]: trace histogram [240, 1, 1, 1] [2018-07-25 08:59:43,498 INFO L415 AbstractCegarLoop]: === Iteration 241 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:43,498 INFO L82 PathProgramCache]: Analyzing trace with hash 576581408, now seen corresponding path program 240 times [2018-07-25 08:59:43,498 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:43,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:45,236 INFO L134 CoverageAnalysis]: Checked inductivity of 28920 backedges. 0 proven. 28920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:45,237 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:45,237 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [242] total 242 [2018-07-25 08:59:45,237 INFO L451 AbstractCegarLoop]: Interpolant automaton has 243 states [2018-07-25 08:59:45,240 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 243 interpolants. [2018-07-25 08:59:45,241 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29403, Invalid=29403, Unknown=0, NotChecked=0, Total=58806 [2018-07-25 08:59:45,241 INFO L87 Difference]: Start difference. First operand 244 states and 244 transitions. Second operand 243 states. [2018-07-25 08:59:45,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:45,877 INFO L93 Difference]: Finished difference Result 247 states and 247 transitions. [2018-07-25 08:59:45,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 243 states. [2018-07-25 08:59:45,877 INFO L78 Accepts]: Start accepts. Automaton has 243 states. Word has length 243 [2018-07-25 08:59:45,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:45,877 INFO L225 Difference]: With dead ends: 247 [2018-07-25 08:59:45,877 INFO L226 Difference]: Without dead ends: 245 [2018-07-25 08:59:45,879 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=29403, Invalid=29403, Unknown=0, NotChecked=0, Total=58806 [2018-07-25 08:59:45,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-07-25 08:59:45,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2018-07-25 08:59:45,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-07-25 08:59:45,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 245 transitions. [2018-07-25 08:59:45,881 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 245 transitions. Word has length 243 [2018-07-25 08:59:45,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:45,881 INFO L472 AbstractCegarLoop]: Abstraction has 245 states and 245 transitions. [2018-07-25 08:59:45,881 INFO L473 AbstractCegarLoop]: Interpolant automaton has 243 states. [2018-07-25 08:59:45,881 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 245 transitions. [2018-07-25 08:59:45,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-07-25 08:59:45,882 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:45,882 INFO L354 BasicCegarLoop]: trace histogram [241, 1, 1, 1] [2018-07-25 08:59:45,882 INFO L415 AbstractCegarLoop]: === Iteration 242 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:45,882 INFO L82 PathProgramCache]: Analyzing trace with hash 694152518, now seen corresponding path program 241 times [2018-07-25 08:59:45,882 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:46,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:47,383 INFO L134 CoverageAnalysis]: Checked inductivity of 29161 backedges. 0 proven. 29161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:47,383 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:47,384 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [243] total 243 [2018-07-25 08:59:47,384 INFO L451 AbstractCegarLoop]: Interpolant automaton has 244 states [2018-07-25 08:59:47,387 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 244 interpolants. [2018-07-25 08:59:47,389 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29646, Invalid=29646, Unknown=0, NotChecked=0, Total=59292 [2018-07-25 08:59:47,389 INFO L87 Difference]: Start difference. First operand 245 states and 245 transitions. Second operand 244 states. [2018-07-25 08:59:49,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:49,049 INFO L93 Difference]: Finished difference Result 248 states and 248 transitions. [2018-07-25 08:59:49,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 244 states. [2018-07-25 08:59:49,049 INFO L78 Accepts]: Start accepts. Automaton has 244 states. Word has length 244 [2018-07-25 08:59:49,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:49,050 INFO L225 Difference]: With dead ends: 248 [2018-07-25 08:59:49,050 INFO L226 Difference]: Without dead ends: 246 [2018-07-25 08:59:49,052 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=29646, Invalid=29646, Unknown=0, NotChecked=0, Total=59292 [2018-07-25 08:59:49,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2018-07-25 08:59:49,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2018-07-25 08:59:49,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2018-07-25 08:59:49,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 246 transitions. [2018-07-25 08:59:49,054 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 246 transitions. Word has length 244 [2018-07-25 08:59:49,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:49,054 INFO L472 AbstractCegarLoop]: Abstraction has 246 states and 246 transitions. [2018-07-25 08:59:49,054 INFO L473 AbstractCegarLoop]: Interpolant automaton has 244 states. [2018-07-25 08:59:49,054 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 246 transitions. [2018-07-25 08:59:49,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2018-07-25 08:59:49,055 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:49,055 INFO L354 BasicCegarLoop]: trace histogram [242, 1, 1, 1] [2018-07-25 08:59:49,055 INFO L415 AbstractCegarLoop]: === Iteration 243 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:49,055 INFO L82 PathProgramCache]: Analyzing trace with hash 43889632, now seen corresponding path program 242 times [2018-07-25 08:59:49,055 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:49,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:50,688 INFO L134 CoverageAnalysis]: Checked inductivity of 29403 backedges. 0 proven. 29403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:50,689 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:50,689 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [244] total 244 [2018-07-25 08:59:50,689 INFO L451 AbstractCegarLoop]: Interpolant automaton has 245 states [2018-07-25 08:59:50,693 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 245 interpolants. [2018-07-25 08:59:50,694 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29890, Invalid=29890, Unknown=0, NotChecked=0, Total=59780 [2018-07-25 08:59:50,694 INFO L87 Difference]: Start difference. First operand 246 states and 246 transitions. Second operand 245 states. [2018-07-25 08:59:52,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:52,334 INFO L93 Difference]: Finished difference Result 249 states and 249 transitions. [2018-07-25 08:59:52,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 245 states. [2018-07-25 08:59:52,334 INFO L78 Accepts]: Start accepts. Automaton has 245 states. Word has length 245 [2018-07-25 08:59:52,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:52,334 INFO L225 Difference]: With dead ends: 249 [2018-07-25 08:59:52,334 INFO L226 Difference]: Without dead ends: 247 [2018-07-25 08:59:52,337 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=29890, Invalid=29890, Unknown=0, NotChecked=0, Total=59780 [2018-07-25 08:59:52,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-07-25 08:59:52,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2018-07-25 08:59:52,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-07-25 08:59:52,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 247 transitions. [2018-07-25 08:59:52,339 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 247 transitions. Word has length 245 [2018-07-25 08:59:52,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:52,339 INFO L472 AbstractCegarLoop]: Abstraction has 247 states and 247 transitions. [2018-07-25 08:59:52,339 INFO L473 AbstractCegarLoop]: Interpolant automaton has 245 states. [2018-07-25 08:59:52,339 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 247 transitions. [2018-07-25 08:59:52,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-07-25 08:59:52,340 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:52,340 INFO L354 BasicCegarLoop]: trace histogram [243, 1, 1, 1] [2018-07-25 08:59:52,340 INFO L415 AbstractCegarLoop]: === Iteration 244 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:52,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1360576646, now seen corresponding path program 243 times [2018-07-25 08:59:52,340 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:52,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:53,936 INFO L134 CoverageAnalysis]: Checked inductivity of 29646 backedges. 0 proven. 29646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:53,936 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:53,937 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [245] total 245 [2018-07-25 08:59:53,937 INFO L451 AbstractCegarLoop]: Interpolant automaton has 246 states [2018-07-25 08:59:53,939 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 246 interpolants. [2018-07-25 08:59:53,940 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30135, Invalid=30135, Unknown=0, NotChecked=0, Total=60270 [2018-07-25 08:59:53,940 INFO L87 Difference]: Start difference. First operand 247 states and 247 transitions. Second operand 246 states. [2018-07-25 08:59:55,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:55,833 INFO L93 Difference]: Finished difference Result 250 states and 250 transitions. [2018-07-25 08:59:55,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 246 states. [2018-07-25 08:59:55,833 INFO L78 Accepts]: Start accepts. Automaton has 246 states. Word has length 246 [2018-07-25 08:59:55,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:55,833 INFO L225 Difference]: With dead ends: 250 [2018-07-25 08:59:55,833 INFO L226 Difference]: Without dead ends: 248 [2018-07-25 08:59:55,834 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 244 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=30135, Invalid=30135, Unknown=0, NotChecked=0, Total=60270 [2018-07-25 08:59:55,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-07-25 08:59:55,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2018-07-25 08:59:55,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2018-07-25 08:59:55,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 248 transitions. [2018-07-25 08:59:55,837 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 248 transitions. Word has length 246 [2018-07-25 08:59:55,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:55,837 INFO L472 AbstractCegarLoop]: Abstraction has 248 states and 248 transitions. [2018-07-25 08:59:55,837 INFO L473 AbstractCegarLoop]: Interpolant automaton has 246 states. [2018-07-25 08:59:55,837 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 248 transitions. [2018-07-25 08:59:55,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-07-25 08:59:55,838 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:55,838 INFO L354 BasicCegarLoop]: trace histogram [244, 1, 1, 1] [2018-07-25 08:59:55,838 INFO L415 AbstractCegarLoop]: === Iteration 245 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:55,838 INFO L82 PathProgramCache]: Analyzing trace with hash -771798880, now seen corresponding path program 244 times [2018-07-25 08:59:55,838 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:56,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:57,402 INFO L134 CoverageAnalysis]: Checked inductivity of 29890 backedges. 0 proven. 29890 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:57,402 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:57,402 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [246] total 246 [2018-07-25 08:59:57,403 INFO L451 AbstractCegarLoop]: Interpolant automaton has 247 states [2018-07-25 08:59:57,406 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 247 interpolants. [2018-07-25 08:59:57,409 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30381, Invalid=30381, Unknown=0, NotChecked=0, Total=60762 [2018-07-25 08:59:57,409 INFO L87 Difference]: Start difference. First operand 248 states and 248 transitions. Second operand 247 states. [2018-07-25 08:59:59,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:59,118 INFO L93 Difference]: Finished difference Result 251 states and 251 transitions. [2018-07-25 08:59:59,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 247 states. [2018-07-25 08:59:59,119 INFO L78 Accepts]: Start accepts. Automaton has 247 states. Word has length 247 [2018-07-25 08:59:59,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:59,119 INFO L225 Difference]: With dead ends: 251 [2018-07-25 08:59:59,119 INFO L226 Difference]: Without dead ends: 249 [2018-07-25 08:59:59,123 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=30381, Invalid=30381, Unknown=0, NotChecked=0, Total=60762 [2018-07-25 08:59:59,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2018-07-25 08:59:59,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2018-07-25 08:59:59,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-07-25 08:59:59,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 249 transitions. [2018-07-25 08:59:59,126 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 249 transitions. Word has length 247 [2018-07-25 08:59:59,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:59,127 INFO L472 AbstractCegarLoop]: Abstraction has 249 states and 249 transitions. [2018-07-25 08:59:59,127 INFO L473 AbstractCegarLoop]: Interpolant automaton has 247 states. [2018-07-25 08:59:59,127 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 249 transitions. [2018-07-25 08:59:59,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-07-25 08:59:59,128 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:59,128 INFO L354 BasicCegarLoop]: trace histogram [245, 1, 1, 1] [2018-07-25 08:59:59,128 INFO L415 AbstractCegarLoop]: === Iteration 246 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:59,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1844036550, now seen corresponding path program 245 times [2018-07-25 08:59:59,128 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:59,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 09:00:00,980 INFO L134 CoverageAnalysis]: Checked inductivity of 30135 backedges. 0 proven. 30135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 09:00:00,981 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 09:00:00,981 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [247] total 247 [2018-07-25 09:00:00,981 INFO L451 AbstractCegarLoop]: Interpolant automaton has 248 states [2018-07-25 09:00:00,986 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 248 interpolants. [2018-07-25 09:00:00,988 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30628, Invalid=30628, Unknown=0, NotChecked=0, Total=61256 [2018-07-25 09:00:00,989 INFO L87 Difference]: Start difference. First operand 249 states and 249 transitions. Second operand 248 states. [2018-07-25 09:00:02,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 09:00:02,015 INFO L93 Difference]: Finished difference Result 252 states and 252 transitions. [2018-07-25 09:00:02,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 248 states. [2018-07-25 09:00:02,015 INFO L78 Accepts]: Start accepts. Automaton has 248 states. Word has length 248 [2018-07-25 09:00:02,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 09:00:02,015 INFO L225 Difference]: With dead ends: 252 [2018-07-25 09:00:02,015 INFO L226 Difference]: Without dead ends: 250 [2018-07-25 09:00:02,017 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 246 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=30628, Invalid=30628, Unknown=0, NotChecked=0, Total=61256 [2018-07-25 09:00:02,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2018-07-25 09:00:02,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2018-07-25 09:00:02,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2018-07-25 09:00:02,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 250 transitions. [2018-07-25 09:00:02,021 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 250 transitions. Word has length 248 [2018-07-25 09:00:02,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 09:00:02,021 INFO L472 AbstractCegarLoop]: Abstraction has 250 states and 250 transitions. [2018-07-25 09:00:02,021 INFO L473 AbstractCegarLoop]: Interpolant automaton has 248 states. [2018-07-25 09:00:02,021 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 250 transitions. [2018-07-25 09:00:02,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-07-25 09:00:02,022 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:00:02,022 INFO L354 BasicCegarLoop]: trace histogram [246, 1, 1, 1] [2018-07-25 09:00:02,023 INFO L415 AbstractCegarLoop]: === Iteration 247 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:00:02,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1330556256, now seen corresponding path program 246 times [2018-07-25 09:00:02,023 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:00:02,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 09:00:03,679 INFO L134 CoverageAnalysis]: Checked inductivity of 30381 backedges. 0 proven. 30381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 09:00:03,679 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 09:00:03,679 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [248] total 248 [2018-07-25 09:00:03,679 INFO L451 AbstractCegarLoop]: Interpolant automaton has 249 states [2018-07-25 09:00:03,682 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 249 interpolants. [2018-07-25 09:00:03,683 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30876, Invalid=30876, Unknown=0, NotChecked=0, Total=61752 [2018-07-25 09:00:03,683 INFO L87 Difference]: Start difference. First operand 250 states and 250 transitions. Second operand 249 states. [2018-07-25 09:00:05,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 09:00:05,131 INFO L93 Difference]: Finished difference Result 253 states and 253 transitions. [2018-07-25 09:00:05,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 249 states. [2018-07-25 09:00:05,131 INFO L78 Accepts]: Start accepts. Automaton has 249 states. Word has length 249 [2018-07-25 09:00:05,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 09:00:05,132 INFO L225 Difference]: With dead ends: 253 [2018-07-25 09:00:05,132 INFO L226 Difference]: Without dead ends: 251 [2018-07-25 09:00:05,133 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=30876, Invalid=30876, Unknown=0, NotChecked=0, Total=61752 [2018-07-25 09:00:05,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-07-25 09:00:05,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2018-07-25 09:00:05,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-07-25 09:00:05,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 251 transitions. [2018-07-25 09:00:05,136 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 251 transitions. Word has length 249 [2018-07-25 09:00:05,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 09:00:05,136 INFO L472 AbstractCegarLoop]: Abstraction has 251 states and 251 transitions. [2018-07-25 09:00:05,136 INFO L473 AbstractCegarLoop]: Interpolant automaton has 249 states. [2018-07-25 09:00:05,136 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 251 transitions. [2018-07-25 09:00:05,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-07-25 09:00:05,137 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:00:05,137 INFO L354 BasicCegarLoop]: trace histogram [247, 1, 1, 1] [2018-07-25 09:00:05,137 INFO L415 AbstractCegarLoop]: === Iteration 248 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:00:05,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1702430970, now seen corresponding path program 247 times [2018-07-25 09:00:05,137 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:00:05,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 09:00:06,749 INFO L134 CoverageAnalysis]: Checked inductivity of 30628 backedges. 0 proven. 30628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 09:00:06,749 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 09:00:06,749 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [249] total 249 [2018-07-25 09:00:06,750 INFO L451 AbstractCegarLoop]: Interpolant automaton has 250 states [2018-07-25 09:00:06,753 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 250 interpolants. [2018-07-25 09:00:06,755 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31125, Invalid=31125, Unknown=0, NotChecked=0, Total=62250 [2018-07-25 09:00:06,755 INFO L87 Difference]: Start difference. First operand 251 states and 251 transitions. Second operand 250 states. [2018-07-25 09:00:07,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 09:00:07,346 INFO L93 Difference]: Finished difference Result 254 states and 254 transitions. [2018-07-25 09:00:07,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 250 states. [2018-07-25 09:00:07,346 INFO L78 Accepts]: Start accepts. Automaton has 250 states. Word has length 250 [2018-07-25 09:00:07,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 09:00:07,347 INFO L225 Difference]: With dead ends: 254 [2018-07-25 09:00:07,347 INFO L226 Difference]: Without dead ends: 252 [2018-07-25 09:00:07,349 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=31125, Invalid=31125, Unknown=0, NotChecked=0, Total=62250 [2018-07-25 09:00:07,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2018-07-25 09:00:07,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2018-07-25 09:00:07,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2018-07-25 09:00:07,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 252 transitions. [2018-07-25 09:00:07,352 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 252 transitions. Word has length 250 [2018-07-25 09:00:07,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 09:00:07,352 INFO L472 AbstractCegarLoop]: Abstraction has 252 states and 252 transitions. [2018-07-25 09:00:07,352 INFO L473 AbstractCegarLoop]: Interpolant automaton has 250 states. [2018-07-25 09:00:07,352 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 252 transitions. [2018-07-25 09:00:07,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-07-25 09:00:07,353 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:00:07,353 INFO L354 BasicCegarLoop]: trace histogram [248, 1, 1, 1] [2018-07-25 09:00:07,353 INFO L415 AbstractCegarLoop]: === Iteration 249 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:00:07,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1235754464, now seen corresponding path program 248 times [2018-07-25 09:00:07,353 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:00:07,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 09:00:09,051 INFO L134 CoverageAnalysis]: Checked inductivity of 30876 backedges. 0 proven. 30876 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 09:00:09,051 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 09:00:09,051 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [250] total 250 [2018-07-25 09:00:09,052 INFO L451 AbstractCegarLoop]: Interpolant automaton has 251 states [2018-07-25 09:00:09,056 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 251 interpolants. [2018-07-25 09:00:09,058 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31375, Invalid=31375, Unknown=0, NotChecked=0, Total=62750 [2018-07-25 09:00:09,059 INFO L87 Difference]: Start difference. First operand 252 states and 252 transitions. Second operand 251 states. [2018-07-25 09:00:11,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 09:00:11,322 INFO L93 Difference]: Finished difference Result 255 states and 255 transitions. [2018-07-25 09:00:11,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 251 states. [2018-07-25 09:00:11,322 INFO L78 Accepts]: Start accepts. Automaton has 251 states. Word has length 251 [2018-07-25 09:00:11,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 09:00:11,323 INFO L225 Difference]: With dead ends: 255 [2018-07-25 09:00:11,323 INFO L226 Difference]: Without dead ends: 253 [2018-07-25 09:00:11,326 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=31375, Invalid=31375, Unknown=0, NotChecked=0, Total=62750 [2018-07-25 09:00:11,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-07-25 09:00:11,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2018-07-25 09:00:11,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-07-25 09:00:11,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 253 transitions. [2018-07-25 09:00:11,328 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 253 transitions. Word has length 251 [2018-07-25 09:00:11,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 09:00:11,329 INFO L472 AbstractCegarLoop]: Abstraction has 253 states and 253 transitions. [2018-07-25 09:00:11,329 INFO L473 AbstractCegarLoop]: Interpolant automaton has 251 states. [2018-07-25 09:00:11,329 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 253 transitions. [2018-07-25 09:00:11,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-07-25 09:00:11,329 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:00:11,330 INFO L354 BasicCegarLoop]: trace histogram [249, 1, 1, 1] [2018-07-25 09:00:11,330 INFO L415 AbstractCegarLoop]: === Iteration 250 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:00:11,330 INFO L82 PathProgramCache]: Analyzing trace with hash 346315334, now seen corresponding path program 249 times [2018-07-25 09:00:11,330 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:00:11,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 09:00:13,237 INFO L134 CoverageAnalysis]: Checked inductivity of 31125 backedges. 0 proven. 31125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 09:00:13,237 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 09:00:13,238 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [251] total 251 [2018-07-25 09:00:13,238 INFO L451 AbstractCegarLoop]: Interpolant automaton has 252 states [2018-07-25 09:00:13,241 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 252 interpolants. [2018-07-25 09:00:13,242 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31626, Invalid=31626, Unknown=0, NotChecked=0, Total=63252 [2018-07-25 09:00:13,242 INFO L87 Difference]: Start difference. First operand 253 states and 253 transitions. Second operand 252 states. [2018-07-25 09:00:13,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 09:00:13,896 INFO L93 Difference]: Finished difference Result 256 states and 256 transitions. [2018-07-25 09:00:13,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 252 states. [2018-07-25 09:00:13,896 INFO L78 Accepts]: Start accepts. Automaton has 252 states. Word has length 252 [2018-07-25 09:00:13,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 09:00:13,897 INFO L225 Difference]: With dead ends: 256 [2018-07-25 09:00:13,897 INFO L226 Difference]: Without dead ends: 254 [2018-07-25 09:00:13,898 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 250 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=31626, Invalid=31626, Unknown=0, NotChecked=0, Total=63252 [2018-07-25 09:00:13,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2018-07-25 09:00:13,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2018-07-25 09:00:13,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2018-07-25 09:00:13,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 254 transitions. [2018-07-25 09:00:13,901 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 254 transitions. Word has length 252 [2018-07-25 09:00:13,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 09:00:13,901 INFO L472 AbstractCegarLoop]: Abstraction has 254 states and 254 transitions. [2018-07-25 09:00:13,901 INFO L473 AbstractCegarLoop]: Interpolant automaton has 252 states. [2018-07-25 09:00:13,901 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 254 transitions. [2018-07-25 09:00:13,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-07-25 09:00:13,902 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:00:13,902 INFO L354 BasicCegarLoop]: trace histogram [250, 1, 1, 1] [2018-07-25 09:00:13,902 INFO L415 AbstractCegarLoop]: === Iteration 251 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:00:13,902 INFO L82 PathProgramCache]: Analyzing trace with hash 2145838816, now seen corresponding path program 250 times [2018-07-25 09:00:13,902 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:00:14,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 09:00:15,534 INFO L134 CoverageAnalysis]: Checked inductivity of 31375 backedges. 0 proven. 31375 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 09:00:15,535 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 09:00:15,535 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [252] total 252 [2018-07-25 09:00:15,535 INFO L451 AbstractCegarLoop]: Interpolant automaton has 253 states [2018-07-25 09:00:15,539 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 253 interpolants. [2018-07-25 09:00:15,541 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31878, Invalid=31878, Unknown=0, NotChecked=0, Total=63756 [2018-07-25 09:00:15,541 INFO L87 Difference]: Start difference. First operand 254 states and 254 transitions. Second operand 253 states. [2018-07-25 09:00:17,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 09:00:17,831 INFO L93 Difference]: Finished difference Result 257 states and 257 transitions. [2018-07-25 09:00:17,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 253 states. [2018-07-25 09:00:17,831 INFO L78 Accepts]: Start accepts. Automaton has 253 states. Word has length 253 [2018-07-25 09:00:17,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 09:00:17,831 INFO L225 Difference]: With dead ends: 257 [2018-07-25 09:00:17,831 INFO L226 Difference]: Without dead ends: 255 [2018-07-25 09:00:17,834 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=31878, Invalid=31878, Unknown=0, NotChecked=0, Total=63756 [2018-07-25 09:00:17,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-07-25 09:00:17,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2018-07-25 09:00:17,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-07-25 09:00:17,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 255 transitions. [2018-07-25 09:00:17,837 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 255 transitions. Word has length 253 [2018-07-25 09:00:17,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 09:00:17,837 INFO L472 AbstractCegarLoop]: Abstraction has 255 states and 255 transitions. [2018-07-25 09:00:17,837 INFO L473 AbstractCegarLoop]: Interpolant automaton has 253 states. [2018-07-25 09:00:17,837 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 255 transitions. [2018-07-25 09:00:17,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-07-25 09:00:17,838 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:00:17,838 INFO L354 BasicCegarLoop]: trace histogram [251, 1, 1, 1] [2018-07-25 09:00:17,838 INFO L415 AbstractCegarLoop]: === Iteration 252 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:00:17,838 INFO L82 PathProgramCache]: Analyzing trace with hash 2096491910, now seen corresponding path program 251 times [2018-07-25 09:00:17,839 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:00:18,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 09:00:19,755 INFO L134 CoverageAnalysis]: Checked inductivity of 31626 backedges. 0 proven. 31626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 09:00:19,755 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 09:00:19,756 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [253] total 253 [2018-07-25 09:00:19,756 INFO L451 AbstractCegarLoop]: Interpolant automaton has 254 states [2018-07-25 09:00:19,760 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 254 interpolants. [2018-07-25 09:00:19,763 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=32131, Invalid=32131, Unknown=0, NotChecked=0, Total=64262 [2018-07-25 09:00:19,763 INFO L87 Difference]: Start difference. First operand 255 states and 255 transitions. Second operand 254 states. [2018-07-25 09:00:20,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 09:00:20,764 INFO L93 Difference]: Finished difference Result 258 states and 258 transitions. [2018-07-25 09:00:20,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 254 states. [2018-07-25 09:00:20,764 INFO L78 Accepts]: Start accepts. Automaton has 254 states. Word has length 254 [2018-07-25 09:00:20,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 09:00:20,764 INFO L225 Difference]: With dead ends: 258 [2018-07-25 09:00:20,764 INFO L226 Difference]: Without dead ends: 256 [2018-07-25 09:00:20,767 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=32131, Invalid=32131, Unknown=0, NotChecked=0, Total=64262 [2018-07-25 09:00:20,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2018-07-25 09:00:20,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2018-07-25 09:00:20,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2018-07-25 09:00:20,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 256 transitions. [2018-07-25 09:00:20,770 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 256 transitions. Word has length 254 [2018-07-25 09:00:20,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 09:00:20,770 INFO L472 AbstractCegarLoop]: Abstraction has 256 states and 256 transitions. [2018-07-25 09:00:20,770 INFO L473 AbstractCegarLoop]: Interpolant automaton has 254 states. [2018-07-25 09:00:20,770 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 256 transitions. [2018-07-25 09:00:20,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2018-07-25 09:00:20,771 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:00:20,771 INFO L354 BasicCegarLoop]: trace histogram [252, 1, 1, 1] [2018-07-25 09:00:20,771 INFO L415 AbstractCegarLoop]: === Iteration 253 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:00:20,771 INFO L82 PathProgramCache]: Analyzing trace with hash 566737824, now seen corresponding path program 252 times [2018-07-25 09:00:20,771 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:00:21,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-07-25 09:00:21,935 WARN L541 AbstractCegarLoop]: Verification canceled [2018-07-25 09:00:21,939 WARN L202 ceAbstractionStarter]: Timeout [2018-07-25 09:00:21,940 INFO L202 PluginConnector]: Adding new model codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 09:00:21 BoogieIcfgContainer [2018-07-25 09:00:21,940 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 09:00:21,941 INFO L168 Benchmark]: Toolchain (without parser) took 259062.52 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.5 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 623.2 MB. Max. memory is 7.1 GB. [2018-07-25 09:00:21,942 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 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 09:00:21,942 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.48 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 09:00:21,943 INFO L168 Benchmark]: Boogie Preprocessor took 27.30 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 09:00:21,943 INFO L168 Benchmark]: RCFGBuilder took 248.15 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-25 09:00:21,943 INFO L168 Benchmark]: TraceAbstraction took 258738.26 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.5 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 612.7 MB. Max. memory is 7.1 GB. [2018-07-25 09:00:21,945 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 0.19 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 44.48 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 27.30 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 248.15 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 258738.26 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.5 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 612.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 21). Cancelled while BasicCegarLoop was analyzing trace of length 256 with TraceHistMax 252, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while NestedInterpolantsBuilder was constructing predicates for 254 interpolants. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. TIMEOUT Result, 258.6s OverallTime, 253 OverallIterations, 252 TraceHistogramMax, 102.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 757 SDtfs, 0 SDslu, 16629 SDs, 0 SdLazy, 48758 SolverSat, 478 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32130 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 31878 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 116.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=256occurred in iteration=252, 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: 0.7s AutomataMinimizationTime, 252 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 23.4s SatisfiabilityAnalysisTime, 125.6s InterpolantComputationTime, 32382 NumberOfCodeBlocks, 32382 NumberOfCodeBlocksAsserted, 252 NumberOfCheckSat, 32130 ConstructedInterpolants, 0 QuantifiedInterpolants, 16226154 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 252 InterpolantComputations, 1 PerfectInterpolantSequences, 0/2667126 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/codeblockAssertOrder01.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_09-00-21-954.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/codeblockAssertOrder01.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_09-00-21-954.csv Completed graceful shutdown