java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/fragtest_simple.i_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 13:25:02,748 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 13:25:02,750 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 13:25:02,764 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 13:25:02,764 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 13:25:02,766 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 13:25:02,767 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 13:25:02,770 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 13:25:02,774 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 13:25:02,775 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 13:25:02,778 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 13:25:02,778 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 13:25:02,779 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 13:25:02,780 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 13:25:02,783 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 13:25:02,791 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 13:25:02,792 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 13:25:02,797 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 13:25:02,799 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 13:25:02,802 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 13:25:02,804 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 13:25:02,805 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 13:25:02,810 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 13:25:02,810 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 13:25:02,810 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 13:25:02,812 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 13:25:02,813 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 13:25:02,814 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 13:25:02,815 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 13:25:02,816 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 13:25:02,816 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 13:25:02,817 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-25 13:25:02,819 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-07-25 13:25:02,829 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 13:25:02,829 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 13:25:02,831 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 13:25:02,831 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 13:25:02,831 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 13:25:02,831 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-25 13:25:02,831 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 13:25:02,832 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 13:25:02,909 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 13:25:02,921 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 13:25:02,925 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 13:25:02,926 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 13:25:02,927 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 13:25:02,927 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/fragtest_simple.i_4.bpl [2018-07-25 13:25:02,928 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/fragtest_simple.i_4.bpl' [2018-07-25 13:25:02,988 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 13:25:02,990 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 13:25:02,990 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 13:25:02,991 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 13:25:02,991 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 13:25:03,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "fragtest_simple.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:25:02" (1/1) ... [2018-07-25 13:25:03,023 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "fragtest_simple.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:25:02" (1/1) ... [2018-07-25 13:25:03,030 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 13:25:03,031 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 13:25:03,031 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 13:25:03,032 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 13:25:03,043 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "fragtest_simple.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:25:02" (1/1) ... [2018-07-25 13:25:03,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "fragtest_simple.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:25:02" (1/1) ... [2018-07-25 13:25:03,044 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "fragtest_simple.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:25:02" (1/1) ... [2018-07-25 13:25:03,044 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "fragtest_simple.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:25:02" (1/1) ... [2018-07-25 13:25:03,048 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "fragtest_simple.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:25:02" (1/1) ... [2018-07-25 13:25:03,050 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "fragtest_simple.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:25:02" (1/1) ... [2018-07-25 13:25:03,051 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "fragtest_simple.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:25:02" (1/1) ... [2018-07-25 13:25:03,054 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 13:25:03,055 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 13:25:03,055 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 13:25:03,055 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 13:25:03,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "fragtest_simple.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:25:02" (1/1) ... [2018-07-25 13:25:03,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-25 13:25:03,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-25 13:25:03,317 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-25 13:25:03,317 INFO L202 PluginConnector]: Adding new model fragtest_simple.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 01:25:03 BoogieIcfgContainer [2018-07-25 13:25:03,318 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 13:25:03,319 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 13:25:03,319 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 13:25:03,323 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 13:25:03,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fragtest_simple.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:25:02" (1/2) ... [2018-07-25 13:25:03,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7176eee2 and model type fragtest_simple.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 01:25:03, skipping insertion in model container [2018-07-25 13:25:03,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fragtest_simple.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 01:25:03" (2/2) ... [2018-07-25 13:25:03,327 INFO L112 eAbstractionObserver]: Analyzing ICFG fragtest_simple.i_4.bpl [2018-07-25 13:25:03,338 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-25 13:25:03,347 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 13:25:03,396 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 13:25:03,397 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 13:25:03,397 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 13:25:03,398 INFO L376 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-25 13:25:03,398 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 13:25:03,398 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 13:25:03,398 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 13:25:03,398 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 13:25:03,399 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 13:25:03,417 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2018-07-25 13:25:03,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-25 13:25:03,432 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:03,434 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-25 13:25:03,435 INFO L415 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:03,441 INFO L82 PathProgramCache]: Analyzing trace with hash 889599113, now seen corresponding path program 1 times [2018-07-25 13:25:03,449 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:03,552 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 13:25:03,555 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 13:25:03,555 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-25 13:25:03,559 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 13:25:03,570 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 13:25:03,571 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 13:25:03,574 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 4 states. [2018-07-25 13:25:03,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:03,631 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2018-07-25 13:25:03,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-25 13:25:03,633 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-07-25 13:25:03,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:03,644 INFO L225 Difference]: With dead ends: 13 [2018-07-25 13:25:03,644 INFO L226 Difference]: Without dead ends: 10 [2018-07-25 13:25:03,648 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-07-25 13:25:03,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-07-25 13:25:03,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2018-07-25 13:25:03,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-25 13:25:03,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2018-07-25 13:25:03,683 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2018-07-25 13:25:03,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:03,684 INFO L472 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2018-07-25 13:25:03,684 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 13:25:03,684 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2018-07-25 13:25:03,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-25 13:25:03,685 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:03,685 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2018-07-25 13:25:03,686 INFO L415 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:03,686 INFO L82 PathProgramCache]: Analyzing trace with hash 206308035, now seen corresponding path program 1 times [2018-07-25 13:25:03,686 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:03,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:03,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:03,734 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 13:25:03,734 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-25 13:25:03,737 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 13:25:03,737 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 13:25:03,737 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 13:25:03,738 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 4 states. [2018-07-25 13:25:03,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:03,766 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2018-07-25 13:25:03,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 13:25:03,767 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-07-25 13:25:03,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:03,769 INFO L225 Difference]: With dead ends: 17 [2018-07-25 13:25:03,769 INFO L226 Difference]: Without dead ends: 11 [2018-07-25 13:25:03,770 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-07-25 13:25:03,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-07-25 13:25:03,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-07-25 13:25:03,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-07-25 13:25:03,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2018-07-25 13:25:03,778 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2018-07-25 13:25:03,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:03,778 INFO L472 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-07-25 13:25:03,779 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 13:25:03,779 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2018-07-25 13:25:03,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-25 13:25:03,779 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:03,780 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2018-07-25 13:25:03,780 INFO L415 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:03,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1531170369, now seen corresponding path program 1 times [2018-07-25 13:25:03,782 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:03,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:03,848 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:03,849 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:03,849 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 13:25:03,849 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 13:25:03,850 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 13:25:03,850 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-25 13:25:03,851 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 6 states. [2018-07-25 13:25:03,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:03,953 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2018-07-25 13:25:03,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-25 13:25:03,954 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2018-07-25 13:25:03,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:03,955 INFO L225 Difference]: With dead ends: 15 [2018-07-25 13:25:03,955 INFO L226 Difference]: Without dead ends: 13 [2018-07-25 13:25:03,956 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-07-25 13:25:03,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-07-25 13:25:03,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-07-25 13:25:03,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-07-25 13:25:03,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-07-25 13:25:03,961 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2018-07-25 13:25:03,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:03,962 INFO L472 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-07-25 13:25:03,962 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 13:25:03,962 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2018-07-25 13:25:03,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-25 13:25:03,963 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:03,963 INFO L354 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2018-07-25 13:25:03,964 INFO L415 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:03,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1719110265, now seen corresponding path program 2 times [2018-07-25 13:25:03,964 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:03,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:04,007 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:04,008 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:04,008 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 13:25:04,009 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 13:25:04,009 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 13:25:04,009 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-25 13:25:04,010 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 6 states. [2018-07-25 13:25:04,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:04,039 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2018-07-25 13:25:04,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-25 13:25:04,040 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2018-07-25 13:25:04,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:04,040 INFO L225 Difference]: With dead ends: 23 [2018-07-25 13:25:04,041 INFO L226 Difference]: Without dead ends: 15 [2018-07-25 13:25:04,041 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-07-25 13:25:04,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-07-25 13:25:04,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-07-25 13:25:04,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-07-25 13:25:04,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-07-25 13:25:04,047 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2018-07-25 13:25:04,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:04,049 INFO L472 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2018-07-25 13:25:04,049 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 13:25:04,049 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2018-07-25 13:25:04,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-25 13:25:04,051 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:04,051 INFO L354 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1] [2018-07-25 13:25:04,052 INFO L415 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:04,052 INFO L82 PathProgramCache]: Analyzing trace with hash -587211915, now seen corresponding path program 3 times [2018-07-25 13:25:04,052 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:04,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:04,155 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:04,156 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:04,156 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 13:25:04,157 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 13:25:04,157 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 13:25:04,157 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-07-25 13:25:04,161 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 7 states. [2018-07-25 13:25:04,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:04,246 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2018-07-25 13:25:04,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-25 13:25:04,249 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2018-07-25 13:25:04,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:04,250 INFO L225 Difference]: With dead ends: 19 [2018-07-25 13:25:04,250 INFO L226 Difference]: Without dead ends: 17 [2018-07-25 13:25:04,251 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2018-07-25 13:25:04,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-07-25 13:25:04,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-07-25 13:25:04,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-07-25 13:25:04,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-07-25 13:25:04,266 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 14 [2018-07-25 13:25:04,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:04,267 INFO L472 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-07-25 13:25:04,267 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 13:25:04,267 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2018-07-25 13:25:04,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-25 13:25:04,268 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:04,268 INFO L354 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1] [2018-07-25 13:25:04,269 INFO L415 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:04,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1669882193, now seen corresponding path program 4 times [2018-07-25 13:25:04,269 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:04,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:04,345 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:04,345 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:04,345 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 13:25:04,346 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 13:25:04,346 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 13:25:04,352 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-25 13:25:04,352 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 8 states. [2018-07-25 13:25:04,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:04,414 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2018-07-25 13:25:04,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-25 13:25:04,418 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2018-07-25 13:25:04,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:04,419 INFO L225 Difference]: With dead ends: 29 [2018-07-25 13:25:04,420 INFO L226 Difference]: Without dead ends: 19 [2018-07-25 13:25:04,420 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-07-25 13:25:04,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-07-25 13:25:04,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-07-25 13:25:04,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-07-25 13:25:04,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-07-25 13:25:04,434 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 16 [2018-07-25 13:25:04,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:04,435 INFO L472 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2018-07-25 13:25:04,435 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 13:25:04,435 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2018-07-25 13:25:04,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 13:25:04,437 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:04,437 INFO L354 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1] [2018-07-25 13:25:04,437 INFO L415 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:04,438 INFO L82 PathProgramCache]: Analyzing trace with hash 70717867, now seen corresponding path program 5 times [2018-07-25 13:25:04,438 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:04,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:04,511 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:04,512 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:04,512 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 13:25:04,512 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 13:25:04,513 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 13:25:04,513 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-07-25 13:25:04,516 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 9 states. [2018-07-25 13:25:04,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:04,567 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2018-07-25 13:25:04,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-25 13:25:04,568 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2018-07-25 13:25:04,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:04,569 INFO L225 Difference]: With dead ends: 31 [2018-07-25 13:25:04,569 INFO L226 Difference]: Without dead ends: 21 [2018-07-25 13:25:04,570 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2018-07-25 13:25:04,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-07-25 13:25:04,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-07-25 13:25:04,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-07-25 13:25:04,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-07-25 13:25:04,576 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 18 [2018-07-25 13:25:04,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:04,576 INFO L472 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2018-07-25 13:25:04,576 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 13:25:04,577 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2018-07-25 13:25:04,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-25 13:25:04,577 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:04,578 INFO L354 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 1, 1, 1, 1] [2018-07-25 13:25:04,578 INFO L415 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:04,578 INFO L82 PathProgramCache]: Analyzing trace with hash 2045097383, now seen corresponding path program 6 times [2018-07-25 13:25:04,579 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:04,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:04,625 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:04,626 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:04,626 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 13:25:04,628 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 13:25:04,628 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 13:25:04,629 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-07-25 13:25:04,630 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 9 states. [2018-07-25 13:25:04,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:04,719 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2018-07-25 13:25:04,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 13:25:04,720 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2018-07-25 13:25:04,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:04,721 INFO L225 Difference]: With dead ends: 27 [2018-07-25 13:25:04,721 INFO L226 Difference]: Without dead ends: 25 [2018-07-25 13:25:04,723 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2018-07-25 13:25:04,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-07-25 13:25:04,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-07-25 13:25:04,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-07-25 13:25:04,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-07-25 13:25:04,740 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 20 [2018-07-25 13:25:04,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:04,740 INFO L472 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2018-07-25 13:25:04,740 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 13:25:04,743 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2018-07-25 13:25:04,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-25 13:25:04,744 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:04,744 INFO L354 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 1, 1, 1, 1] [2018-07-25 13:25:04,744 INFO L415 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:04,744 INFO L82 PathProgramCache]: Analyzing trace with hash 37022875, now seen corresponding path program 7 times [2018-07-25 13:25:04,745 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:04,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:04,800 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:04,801 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:04,804 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 13:25:04,804 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 13:25:04,805 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 13:25:04,805 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-07-25 13:25:04,807 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 12 states. [2018-07-25 13:25:04,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:04,860 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2018-07-25 13:25:04,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 13:25:04,861 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 24 [2018-07-25 13:25:04,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:04,864 INFO L225 Difference]: With dead ends: 41 [2018-07-25 13:25:04,865 INFO L226 Difference]: Without dead ends: 27 [2018-07-25 13:25:04,866 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2018-07-25 13:25:04,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-07-25 13:25:04,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-07-25 13:25:04,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-07-25 13:25:04,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-07-25 13:25:04,877 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 24 [2018-07-25 13:25:04,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:04,878 INFO L472 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2018-07-25 13:25:04,878 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 13:25:04,878 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2018-07-25 13:25:04,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-25 13:25:04,880 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:04,880 INFO L354 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1] [2018-07-25 13:25:04,880 INFO L415 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:04,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1480612969, now seen corresponding path program 8 times [2018-07-25 13:25:04,881 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:04,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:04,964 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 30 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:04,965 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:04,965 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-07-25 13:25:04,968 INFO L451 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-25 13:25:04,968 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-25 13:25:04,968 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-07-25 13:25:04,969 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 13 states. [2018-07-25 13:25:05,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:05,039 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2018-07-25 13:25:05,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 13:25:05,040 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 26 [2018-07-25 13:25:05,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:05,045 INFO L225 Difference]: With dead ends: 43 [2018-07-25 13:25:05,045 INFO L226 Difference]: Without dead ends: 29 [2018-07-25 13:25:05,046 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2018-07-25 13:25:05,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-07-25 13:25:05,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-07-25 13:25:05,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-07-25 13:25:05,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2018-07-25 13:25:05,056 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 26 [2018-07-25 13:25:05,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:05,058 INFO L472 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2018-07-25 13:25:05,058 INFO L473 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-25 13:25:05,059 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2018-07-25 13:25:05,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-07-25 13:25:05,061 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:05,061 INFO L354 BasicCegarLoop]: trace histogram [7, 6, 6, 5, 1, 1, 1, 1] [2018-07-25 13:25:05,062 INFO L415 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:05,062 INFO L82 PathProgramCache]: Analyzing trace with hash 360221587, now seen corresponding path program 9 times [2018-07-25 13:25:05,062 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:05,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:05,135 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 42 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:05,135 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:05,136 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 13:25:05,136 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 13:25:05,137 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 13:25:05,138 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2018-07-25 13:25:05,138 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 11 states. [2018-07-25 13:25:05,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:05,209 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2018-07-25 13:25:05,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-25 13:25:05,209 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2018-07-25 13:25:05,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:05,210 INFO L225 Difference]: With dead ends: 35 [2018-07-25 13:25:05,210 INFO L226 Difference]: Without dead ends: 33 [2018-07-25 13:25:05,211 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=118, Invalid=188, Unknown=0, NotChecked=0, Total=306 [2018-07-25 13:25:05,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-07-25 13:25:05,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-07-25 13:25:05,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-07-25 13:25:05,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2018-07-25 13:25:05,221 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 28 [2018-07-25 13:25:05,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:05,221 INFO L472 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2018-07-25 13:25:05,222 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 13:25:05,222 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2018-07-25 13:25:05,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-07-25 13:25:05,223 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:05,223 INFO L354 BasicCegarLoop]: trace histogram [8, 7, 7, 6, 1, 1, 1, 1] [2018-07-25 13:25:05,225 INFO L415 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:05,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1263725703, now seen corresponding path program 10 times [2018-07-25 13:25:05,225 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:05,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:05,296 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 56 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:05,297 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:05,297 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-25 13:25:05,298 INFO L451 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-25 13:25:05,298 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-25 13:25:05,298 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2018-07-25 13:25:05,299 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 16 states. [2018-07-25 13:25:05,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:05,364 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2018-07-25 13:25:05,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-25 13:25:05,365 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 32 [2018-07-25 13:25:05,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:05,366 INFO L225 Difference]: With dead ends: 53 [2018-07-25 13:25:05,366 INFO L226 Difference]: Without dead ends: 35 [2018-07-25 13:25:05,367 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2018-07-25 13:25:05,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-07-25 13:25:05,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-07-25 13:25:05,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-07-25 13:25:05,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2018-07-25 13:25:05,378 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 32 [2018-07-25 13:25:05,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:05,378 INFO L472 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2018-07-25 13:25:05,378 INFO L473 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-25 13:25:05,378 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2018-07-25 13:25:05,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-07-25 13:25:05,380 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:05,380 INFO L354 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1] [2018-07-25 13:25:05,381 INFO L415 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:05,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1629808515, now seen corresponding path program 11 times [2018-07-25 13:25:05,381 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:05,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:05,457 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 56 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:05,458 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:05,458 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-07-25 13:25:05,460 INFO L451 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-25 13:25:05,460 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-25 13:25:05,461 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2018-07-25 13:25:05,461 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 17 states. [2018-07-25 13:25:05,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:05,532 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2018-07-25 13:25:05,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-25 13:25:05,532 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 34 [2018-07-25 13:25:05,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:05,533 INFO L225 Difference]: With dead ends: 55 [2018-07-25 13:25:05,533 INFO L226 Difference]: Without dead ends: 37 [2018-07-25 13:25:05,535 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2018-07-25 13:25:05,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-07-25 13:25:05,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-07-25 13:25:05,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-07-25 13:25:05,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2018-07-25 13:25:05,548 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 34 [2018-07-25 13:25:05,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:05,548 INFO L472 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2018-07-25 13:25:05,548 INFO L473 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-25 13:25:05,548 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2018-07-25 13:25:05,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-07-25 13:25:05,550 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:05,550 INFO L354 BasicCegarLoop]: trace histogram [9, 8, 8, 7, 1, 1, 1, 1] [2018-07-25 13:25:05,550 INFO L415 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:05,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1248072575, now seen corresponding path program 12 times [2018-07-25 13:25:05,554 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:05,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:05,635 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 72 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:05,636 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:05,636 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-07-25 13:25:05,637 INFO L451 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-25 13:25:05,643 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-25 13:25:05,643 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2018-07-25 13:25:05,643 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 13 states. [2018-07-25 13:25:05,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:05,710 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2018-07-25 13:25:05,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-25 13:25:05,710 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2018-07-25 13:25:05,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:05,711 INFO L225 Difference]: With dead ends: 43 [2018-07-25 13:25:05,711 INFO L226 Difference]: Without dead ends: 41 [2018-07-25 13:25:05,712 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=177, Invalid=285, Unknown=0, NotChecked=0, Total=462 [2018-07-25 13:25:05,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-07-25 13:25:05,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-07-25 13:25:05,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-07-25 13:25:05,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2018-07-25 13:25:05,720 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 36 [2018-07-25 13:25:05,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:05,721 INFO L472 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2018-07-25 13:25:05,721 INFO L473 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-25 13:25:05,721 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2018-07-25 13:25:05,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-07-25 13:25:05,722 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:05,722 INFO L354 BasicCegarLoop]: trace histogram [10, 9, 9, 8, 1, 1, 1, 1] [2018-07-25 13:25:05,723 INFO L415 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:05,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1910464909, now seen corresponding path program 13 times [2018-07-25 13:25:05,723 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:05,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:05,812 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 90 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:05,813 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:05,813 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-25 13:25:05,813 INFO L451 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-25 13:25:05,814 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-25 13:25:05,814 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2018-07-25 13:25:05,815 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 20 states. [2018-07-25 13:25:05,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:05,889 INFO L93 Difference]: Finished difference Result 65 states and 67 transitions. [2018-07-25 13:25:05,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-25 13:25:05,890 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 40 [2018-07-25 13:25:05,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:05,891 INFO L225 Difference]: With dead ends: 65 [2018-07-25 13:25:05,891 INFO L226 Difference]: Without dead ends: 43 [2018-07-25 13:25:05,894 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=225, Invalid=531, Unknown=0, NotChecked=0, Total=756 [2018-07-25 13:25:05,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-07-25 13:25:05,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-07-25 13:25:05,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-07-25 13:25:05,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2018-07-25 13:25:05,905 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 40 [2018-07-25 13:25:05,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:05,907 INFO L472 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2018-07-25 13:25:05,907 INFO L473 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-25 13:25:05,907 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2018-07-25 13:25:05,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-07-25 13:25:05,908 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:05,908 INFO L354 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 1, 1, 1, 1] [2018-07-25 13:25:05,909 INFO L415 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:05,909 INFO L82 PathProgramCache]: Analyzing trace with hash 179690863, now seen corresponding path program 14 times [2018-07-25 13:25:05,909 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:05,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:06,010 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 90 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:06,011 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:06,011 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-07-25 13:25:06,016 INFO L451 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-07-25 13:25:06,017 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-07-25 13:25:06,017 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2018-07-25 13:25:06,018 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 21 states. [2018-07-25 13:25:06,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:06,111 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions. [2018-07-25 13:25:06,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-25 13:25:06,111 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 42 [2018-07-25 13:25:06,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:06,112 INFO L225 Difference]: With dead ends: 67 [2018-07-25 13:25:06,113 INFO L226 Difference]: Without dead ends: 45 [2018-07-25 13:25:06,114 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=264, Invalid=606, Unknown=0, NotChecked=0, Total=870 [2018-07-25 13:25:06,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-07-25 13:25:06,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-07-25 13:25:06,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-07-25 13:25:06,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2018-07-25 13:25:06,132 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 42 [2018-07-25 13:25:06,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:06,132 INFO L472 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2018-07-25 13:25:06,132 INFO L473 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-07-25 13:25:06,133 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2018-07-25 13:25:06,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-07-25 13:25:06,133 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:06,134 INFO L354 BasicCegarLoop]: trace histogram [11, 10, 10, 9, 1, 1, 1, 1] [2018-07-25 13:25:06,134 INFO L415 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:06,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1225306773, now seen corresponding path program 15 times [2018-07-25 13:25:06,136 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:06,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:06,215 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 110 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:06,216 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:06,216 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-07-25 13:25:06,216 INFO L451 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-25 13:25:06,217 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-25 13:25:06,217 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2018-07-25 13:25:06,219 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 15 states. [2018-07-25 13:25:06,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:06,295 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2018-07-25 13:25:06,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-07-25 13:25:06,295 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 44 [2018-07-25 13:25:06,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:06,296 INFO L225 Difference]: With dead ends: 51 [2018-07-25 13:25:06,296 INFO L226 Difference]: Without dead ends: 49 [2018-07-25 13:25:06,297 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=248, Invalid=402, Unknown=0, NotChecked=0, Total=650 [2018-07-25 13:25:06,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-07-25 13:25:06,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-07-25 13:25:06,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-07-25 13:25:06,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2018-07-25 13:25:06,305 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 44 [2018-07-25 13:25:06,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:06,306 INFO L472 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2018-07-25 13:25:06,306 INFO L473 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-25 13:25:06,306 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2018-07-25 13:25:06,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-07-25 13:25:06,307 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:06,307 INFO L354 BasicCegarLoop]: trace histogram [12, 11, 11, 10, 1, 1, 1, 1] [2018-07-25 13:25:06,307 INFO L415 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:06,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1452473761, now seen corresponding path program 16 times [2018-07-25 13:25:06,308 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:06,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:06,417 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 132 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:06,417 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:06,417 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-25 13:25:06,418 INFO L451 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-25 13:25:06,418 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-25 13:25:06,419 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2018-07-25 13:25:06,419 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand 24 states. [2018-07-25 13:25:06,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:06,517 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2018-07-25 13:25:06,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-25 13:25:06,517 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 48 [2018-07-25 13:25:06,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:06,521 INFO L225 Difference]: With dead ends: 77 [2018-07-25 13:25:06,522 INFO L226 Difference]: Without dead ends: 51 [2018-07-25 13:25:06,523 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=330, Invalid=792, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 13:25:06,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-07-25 13:25:06,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-07-25 13:25:06,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-07-25 13:25:06,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2018-07-25 13:25:06,539 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 48 [2018-07-25 13:25:06,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:06,539 INFO L472 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2018-07-25 13:25:06,540 INFO L473 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-25 13:25:06,540 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2018-07-25 13:25:06,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-07-25 13:25:06,540 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:06,541 INFO L354 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 1, 1, 1, 1] [2018-07-25 13:25:06,541 INFO L415 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:06,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1195476315, now seen corresponding path program 17 times [2018-07-25 13:25:06,543 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:06,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:06,683 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 132 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:06,684 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:06,684 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-07-25 13:25:06,685 INFO L451 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-07-25 13:25:06,686 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-07-25 13:25:06,686 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2018-07-25 13:25:06,686 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 25 states. [2018-07-25 13:25:06,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:06,781 INFO L93 Difference]: Finished difference Result 79 states and 81 transitions. [2018-07-25 13:25:06,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-07-25 13:25:06,781 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 50 [2018-07-25 13:25:06,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:06,782 INFO L225 Difference]: With dead ends: 79 [2018-07-25 13:25:06,782 INFO L226 Difference]: Without dead ends: 53 [2018-07-25 13:25:06,783 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=377, Invalid=883, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 13:25:06,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-07-25 13:25:06,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-07-25 13:25:06,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-07-25 13:25:06,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2018-07-25 13:25:06,793 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 50 [2018-07-25 13:25:06,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:06,794 INFO L472 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2018-07-25 13:25:06,794 INFO L473 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-07-25 13:25:06,794 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2018-07-25 13:25:06,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-07-25 13:25:06,795 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:06,795 INFO L354 BasicCegarLoop]: trace histogram [13, 12, 12, 11, 1, 1, 1, 1] [2018-07-25 13:25:06,795 INFO L415 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:06,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1040107177, now seen corresponding path program 18 times [2018-07-25 13:25:06,795 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:06,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:06,895 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 156 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:06,895 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:06,895 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-07-25 13:25:06,896 INFO L451 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-25 13:25:06,896 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-25 13:25:06,896 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2018-07-25 13:25:06,897 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 17 states. [2018-07-25 13:25:06,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:06,996 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2018-07-25 13:25:06,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-25 13:25:06,996 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 52 [2018-07-25 13:25:06,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:06,997 INFO L225 Difference]: With dead ends: 59 [2018-07-25 13:25:06,997 INFO L226 Difference]: Without dead ends: 57 [2018-07-25 13:25:06,999 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=331, Invalid=539, Unknown=0, NotChecked=0, Total=870 [2018-07-25 13:25:06,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-07-25 13:25:07,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-07-25 13:25:07,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-07-25 13:25:07,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2018-07-25 13:25:07,011 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 52 [2018-07-25 13:25:07,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:07,012 INFO L472 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2018-07-25 13:25:07,012 INFO L473 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-25 13:25:07,012 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2018-07-25 13:25:07,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-07-25 13:25:07,017 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:07,017 INFO L354 BasicCegarLoop]: trace histogram [14, 13, 13, 12, 1, 1, 1, 1] [2018-07-25 13:25:07,017 INFO L415 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:07,017 INFO L82 PathProgramCache]: Analyzing trace with hash 75962443, now seen corresponding path program 19 times [2018-07-25 13:25:07,017 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:07,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:07,146 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 182 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:07,147 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:07,147 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-25 13:25:07,148 INFO L451 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-25 13:25:07,148 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-25 13:25:07,149 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2018-07-25 13:25:07,149 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand 28 states. [2018-07-25 13:25:07,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:07,255 INFO L93 Difference]: Finished difference Result 89 states and 91 transitions. [2018-07-25 13:25:07,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-07-25 13:25:07,256 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 56 [2018-07-25 13:25:07,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:07,256 INFO L225 Difference]: With dead ends: 89 [2018-07-25 13:25:07,257 INFO L226 Difference]: Without dead ends: 59 [2018-07-25 13:25:07,258 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=455, Invalid=1105, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 13:25:07,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-07-25 13:25:07,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-07-25 13:25:07,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-07-25 13:25:07,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2018-07-25 13:25:07,271 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 56 [2018-07-25 13:25:07,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:07,271 INFO L472 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2018-07-25 13:25:07,272 INFO L473 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-25 13:25:07,272 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2018-07-25 13:25:07,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-07-25 13:25:07,274 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:07,274 INFO L354 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 1, 1, 1, 1] [2018-07-25 13:25:07,275 INFO L415 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:07,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1108795207, now seen corresponding path program 20 times [2018-07-25 13:25:07,275 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:07,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:07,422 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 182 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:07,423 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:07,423 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-07-25 13:25:07,424 INFO L451 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-07-25 13:25:07,424 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-07-25 13:25:07,424 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2018-07-25 13:25:07,425 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand 29 states. [2018-07-25 13:25:07,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:07,534 INFO L93 Difference]: Finished difference Result 91 states and 93 transitions. [2018-07-25 13:25:07,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-25 13:25:07,534 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 58 [2018-07-25 13:25:07,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:07,535 INFO L225 Difference]: With dead ends: 91 [2018-07-25 13:25:07,537 INFO L226 Difference]: Without dead ends: 61 [2018-07-25 13:25:07,541 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=510, Invalid=1212, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 13:25:07,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-07-25 13:25:07,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-07-25 13:25:07,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-07-25 13:25:07,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2018-07-25 13:25:07,556 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 58 [2018-07-25 13:25:07,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:07,556 INFO L472 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2018-07-25 13:25:07,556 INFO L473 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-07-25 13:25:07,557 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2018-07-25 13:25:07,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-07-25 13:25:07,557 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:07,558 INFO L354 BasicCegarLoop]: trace histogram [15, 14, 14, 13, 1, 1, 1, 1] [2018-07-25 13:25:07,558 INFO L415 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:07,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1523636035, now seen corresponding path program 21 times [2018-07-25 13:25:07,559 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:07,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:07,704 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 210 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:07,704 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:07,704 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-07-25 13:25:07,705 INFO L451 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-25 13:25:07,705 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-25 13:25:07,705 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2018-07-25 13:25:07,705 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand 19 states. [2018-07-25 13:25:07,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:07,842 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions. [2018-07-25 13:25:07,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-25 13:25:07,842 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 60 [2018-07-25 13:25:07,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:07,843 INFO L225 Difference]: With dead ends: 67 [2018-07-25 13:25:07,843 INFO L226 Difference]: Without dead ends: 65 [2018-07-25 13:25:07,845 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=426, Invalid=696, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 13:25:07,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-07-25 13:25:07,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-07-25 13:25:07,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-07-25 13:25:07,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2018-07-25 13:25:07,858 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 60 [2018-07-25 13:25:07,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:07,860 INFO L472 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2018-07-25 13:25:07,860 INFO L473 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-25 13:25:07,861 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2018-07-25 13:25:07,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-07-25 13:25:07,861 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:07,861 INFO L354 BasicCegarLoop]: trace histogram [16, 15, 15, 14, 1, 1, 1, 1] [2018-07-25 13:25:07,862 INFO L415 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:07,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1329455159, now seen corresponding path program 22 times [2018-07-25 13:25:07,862 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:07,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:08,012 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 240 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:08,013 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:08,013 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-25 13:25:08,014 INFO L451 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-25 13:25:08,014 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-25 13:25:08,015 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2018-07-25 13:25:08,015 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand 32 states. [2018-07-25 13:25:08,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:08,133 INFO L93 Difference]: Finished difference Result 101 states and 103 transitions. [2018-07-25 13:25:08,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-07-25 13:25:08,133 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 64 [2018-07-25 13:25:08,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:08,134 INFO L225 Difference]: With dead ends: 101 [2018-07-25 13:25:08,134 INFO L226 Difference]: Without dead ends: 67 [2018-07-25 13:25:08,136 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=600, Invalid=1470, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 13:25:08,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-07-25 13:25:08,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-07-25 13:25:08,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-07-25 13:25:08,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2018-07-25 13:25:08,149 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 64 [2018-07-25 13:25:08,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:08,150 INFO L472 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2018-07-25 13:25:08,150 INFO L473 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-25 13:25:08,150 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2018-07-25 13:25:08,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-07-25 13:25:08,150 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:08,151 INFO L354 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 1, 1, 1, 1] [2018-07-25 13:25:08,151 INFO L415 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:08,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1862593331, now seen corresponding path program 23 times [2018-07-25 13:25:08,152 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:08,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:08,289 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 240 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:08,289 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:08,290 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-07-25 13:25:08,290 INFO L451 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-07-25 13:25:08,290 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-07-25 13:25:08,291 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 13:25:08,291 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand 33 states. [2018-07-25 13:25:08,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:08,413 INFO L93 Difference]: Finished difference Result 103 states and 105 transitions. [2018-07-25 13:25:08,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-25 13:25:08,413 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 66 [2018-07-25 13:25:08,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:08,414 INFO L225 Difference]: With dead ends: 103 [2018-07-25 13:25:08,414 INFO L226 Difference]: Without dead ends: 69 [2018-07-25 13:25:08,415 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=663, Invalid=1593, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 13:25:08,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-07-25 13:25:08,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-07-25 13:25:08,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-07-25 13:25:08,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2018-07-25 13:25:08,423 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 66 [2018-07-25 13:25:08,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:08,424 INFO L472 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2018-07-25 13:25:08,424 INFO L473 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-07-25 13:25:08,424 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2018-07-25 13:25:08,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-07-25 13:25:08,425 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:08,425 INFO L354 BasicCegarLoop]: trace histogram [17, 16, 16, 15, 1, 1, 1, 1] [2018-07-25 13:25:08,425 INFO L415 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:08,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1187698897, now seen corresponding path program 24 times [2018-07-25 13:25:08,425 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:08,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:08,519 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 272 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:08,520 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:08,520 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-07-25 13:25:08,520 INFO L451 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-07-25 13:25:08,520 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-07-25 13:25:08,521 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2018-07-25 13:25:08,521 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand 21 states. [2018-07-25 13:25:08,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:08,611 INFO L93 Difference]: Finished difference Result 75 states and 77 transitions. [2018-07-25 13:25:08,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-07-25 13:25:08,611 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 68 [2018-07-25 13:25:08,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:08,612 INFO L225 Difference]: With dead ends: 75 [2018-07-25 13:25:08,612 INFO L226 Difference]: Without dead ends: 73 [2018-07-25 13:25:08,613 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=533, Invalid=873, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 13:25:08,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-07-25 13:25:08,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-07-25 13:25:08,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-07-25 13:25:08,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2018-07-25 13:25:08,621 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 68 [2018-07-25 13:25:08,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:08,622 INFO L472 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2018-07-25 13:25:08,622 INFO L473 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-07-25 13:25:08,622 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2018-07-25 13:25:08,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-07-25 13:25:08,622 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:08,623 INFO L354 BasicCegarLoop]: trace histogram [18, 17, 17, 16, 1, 1, 1, 1] [2018-07-25 13:25:08,623 INFO L415 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:08,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1105222179, now seen corresponding path program 25 times [2018-07-25 13:25:08,623 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:08,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:08,774 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 306 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:08,774 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:08,774 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-25 13:25:08,775 INFO L451 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-25 13:25:08,775 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-25 13:25:08,775 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=919, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 13:25:08,776 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand 36 states. [2018-07-25 13:25:08,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:08,892 INFO L93 Difference]: Finished difference Result 113 states and 115 transitions. [2018-07-25 13:25:08,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-07-25 13:25:08,893 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 72 [2018-07-25 13:25:08,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:08,893 INFO L225 Difference]: With dead ends: 113 [2018-07-25 13:25:08,893 INFO L226 Difference]: Without dead ends: 75 [2018-07-25 13:25:08,895 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=765, Invalid=1887, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 13:25:08,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-07-25 13:25:08,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-07-25 13:25:08,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-07-25 13:25:08,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2018-07-25 13:25:08,903 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 72 [2018-07-25 13:25:08,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:08,904 INFO L472 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2018-07-25 13:25:08,904 INFO L473 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-25 13:25:08,904 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2018-07-25 13:25:08,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-07-25 13:25:08,905 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:08,905 INFO L354 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 1, 1, 1, 1] [2018-07-25 13:25:08,905 INFO L415 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:08,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1247455519, now seen corresponding path program 26 times [2018-07-25 13:25:08,905 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:08,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:09,062 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 306 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:09,062 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:09,062 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-07-25 13:25:09,062 INFO L451 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-07-25 13:25:09,063 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-07-25 13:25:09,064 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 13:25:09,064 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand 37 states. [2018-07-25 13:25:09,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:09,198 INFO L93 Difference]: Finished difference Result 115 states and 117 transitions. [2018-07-25 13:25:09,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-07-25 13:25:09,198 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 74 [2018-07-25 13:25:09,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:09,199 INFO L225 Difference]: With dead ends: 115 [2018-07-25 13:25:09,199 INFO L226 Difference]: Without dead ends: 77 [2018-07-25 13:25:09,201 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=836, Invalid=2026, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 13:25:09,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-07-25 13:25:09,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-07-25 13:25:09,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-07-25 13:25:09,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2018-07-25 13:25:09,213 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 74 [2018-07-25 13:25:09,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:09,213 INFO L472 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2018-07-25 13:25:09,213 INFO L473 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-07-25 13:25:09,213 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2018-07-25 13:25:09,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-07-25 13:25:09,214 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:09,214 INFO L354 BasicCegarLoop]: trace histogram [19, 18, 18, 17, 1, 1, 1, 1] [2018-07-25 13:25:09,214 INFO L415 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:09,214 INFO L82 PathProgramCache]: Analyzing trace with hash 494741787, now seen corresponding path program 27 times [2018-07-25 13:25:09,215 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:09,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:09,322 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 342 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:09,322 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:09,322 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-07-25 13:25:09,323 INFO L451 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-07-25 13:25:09,323 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-07-25 13:25:09,323 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2018-07-25 13:25:09,324 INFO L87 Difference]: Start difference. First operand 77 states and 78 transitions. Second operand 23 states. [2018-07-25 13:25:09,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:09,432 INFO L93 Difference]: Finished difference Result 83 states and 85 transitions. [2018-07-25 13:25:09,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-07-25 13:25:09,432 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 76 [2018-07-25 13:25:09,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:09,433 INFO L225 Difference]: With dead ends: 83 [2018-07-25 13:25:09,433 INFO L226 Difference]: Without dead ends: 81 [2018-07-25 13:25:09,435 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=652, Invalid=1070, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 13:25:09,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-07-25 13:25:09,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-07-25 13:25:09,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-07-25 13:25:09,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2018-07-25 13:25:09,444 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 76 [2018-07-25 13:25:09,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:09,444 INFO L472 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2018-07-25 13:25:09,444 INFO L473 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-07-25 13:25:09,445 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2018-07-25 13:25:09,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-07-25 13:25:09,445 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:09,446 INFO L354 BasicCegarLoop]: trace histogram [20, 19, 19, 18, 1, 1, 1, 1] [2018-07-25 13:25:09,446 INFO L415 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:09,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1564313103, now seen corresponding path program 28 times [2018-07-25 13:25:09,446 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:09,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:09,627 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 380 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:09,627 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:09,628 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-25 13:25:09,628 INFO L451 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-25 13:25:09,628 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-25 13:25:09,629 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=1141, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 13:25:09,630 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand 40 states. [2018-07-25 13:25:09,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:09,782 INFO L93 Difference]: Finished difference Result 125 states and 127 transitions. [2018-07-25 13:25:09,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-25 13:25:09,782 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 80 [2018-07-25 13:25:09,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:09,783 INFO L225 Difference]: With dead ends: 125 [2018-07-25 13:25:09,783 INFO L226 Difference]: Without dead ends: 83 [2018-07-25 13:25:09,785 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=950, Invalid=2356, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 13:25:09,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-07-25 13:25:09,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-07-25 13:25:09,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-07-25 13:25:09,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2018-07-25 13:25:09,794 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 80 [2018-07-25 13:25:09,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:09,794 INFO L472 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2018-07-25 13:25:09,795 INFO L473 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-25 13:25:09,795 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2018-07-25 13:25:09,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-07-25 13:25:09,795 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:09,796 INFO L354 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 1, 1, 1, 1] [2018-07-25 13:25:09,796 INFO L415 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:09,796 INFO L82 PathProgramCache]: Analyzing trace with hash 417798411, now seen corresponding path program 29 times [2018-07-25 13:25:09,796 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:09,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:09,987 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 380 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:09,987 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:09,988 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-07-25 13:25:09,988 INFO L451 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-07-25 13:25:09,989 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-07-25 13:25:09,990 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=440, Invalid=1200, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 13:25:09,990 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand 41 states. [2018-07-25 13:25:10,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:10,176 INFO L93 Difference]: Finished difference Result 127 states and 129 transitions. [2018-07-25 13:25:10,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-07-25 13:25:10,176 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 82 [2018-07-25 13:25:10,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:10,177 INFO L225 Difference]: With dead ends: 127 [2018-07-25 13:25:10,177 INFO L226 Difference]: Without dead ends: 85 [2018-07-25 13:25:10,179 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 514 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1029, Invalid=2511, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 13:25:10,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-07-25 13:25:10,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-07-25 13:25:10,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-07-25 13:25:10,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions. [2018-07-25 13:25:10,191 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 82 [2018-07-25 13:25:10,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:10,191 INFO L472 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions. [2018-07-25 13:25:10,191 INFO L473 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-07-25 13:25:10,192 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions. [2018-07-25 13:25:10,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-07-25 13:25:10,192 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:10,193 INFO L354 BasicCegarLoop]: trace histogram [21, 20, 20, 19, 1, 1, 1, 1] [2018-07-25 13:25:10,193 INFO L415 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:10,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1871192825, now seen corresponding path program 30 times [2018-07-25 13:25:10,193 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:10,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:10,332 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 420 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:10,333 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:10,333 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-07-25 13:25:10,334 INFO L451 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-07-25 13:25:10,334 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-07-25 13:25:10,334 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2018-07-25 13:25:10,335 INFO L87 Difference]: Start difference. First operand 85 states and 86 transitions. Second operand 25 states. [2018-07-25 13:25:10,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:10,457 INFO L93 Difference]: Finished difference Result 91 states and 93 transitions. [2018-07-25 13:25:10,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-07-25 13:25:10,458 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 84 [2018-07-25 13:25:10,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:10,459 INFO L225 Difference]: With dead ends: 91 [2018-07-25 13:25:10,459 INFO L226 Difference]: Without dead ends: 89 [2018-07-25 13:25:10,460 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=783, Invalid=1287, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 13:25:10,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-07-25 13:25:10,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-07-25 13:25:10,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-07-25 13:25:10,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2018-07-25 13:25:10,502 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 84 [2018-07-25 13:25:10,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:10,502 INFO L472 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2018-07-25 13:25:10,502 INFO L473 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-07-25 13:25:10,503 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2018-07-25 13:25:10,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-07-25 13:25:10,503 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:10,503 INFO L354 BasicCegarLoop]: trace histogram [22, 21, 21, 20, 1, 1, 1, 1] [2018-07-25 13:25:10,504 INFO L415 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:10,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1432067077, now seen corresponding path program 31 times [2018-07-25 13:25:10,509 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:10,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:10,700 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 462 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:10,700 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:10,700 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-25 13:25:10,700 INFO L451 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-25 13:25:10,701 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-25 13:25:10,704 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=505, Invalid=1387, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 13:25:10,705 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand 44 states. [2018-07-25 13:25:10,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:10,874 INFO L93 Difference]: Finished difference Result 137 states and 139 transitions. [2018-07-25 13:25:10,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-07-25 13:25:10,874 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 88 [2018-07-25 13:25:10,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:10,875 INFO L225 Difference]: With dead ends: 137 [2018-07-25 13:25:10,875 INFO L226 Difference]: Without dead ends: 91 [2018-07-25 13:25:10,881 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1155, Invalid=2877, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 13:25:10,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-07-25 13:25:10,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-07-25 13:25:10,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-07-25 13:25:10,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2018-07-25 13:25:10,891 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 88 [2018-07-25 13:25:10,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:10,892 INFO L472 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2018-07-25 13:25:10,892 INFO L473 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-25 13:25:10,892 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2018-07-25 13:25:10,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-07-25 13:25:10,893 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:10,893 INFO L354 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 1, 1, 1, 1] [2018-07-25 13:25:10,893 INFO L415 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:10,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1476838665, now seen corresponding path program 32 times [2018-07-25 13:25:10,894 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:10,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:11,085 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 462 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:11,085 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:11,085 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-07-25 13:25:11,086 INFO L451 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-07-25 13:25:11,086 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-07-25 13:25:11,087 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=1452, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 13:25:11,087 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand 45 states. [2018-07-25 13:25:11,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:11,259 INFO L93 Difference]: Finished difference Result 139 states and 141 transitions. [2018-07-25 13:25:11,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-07-25 13:25:11,259 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 90 [2018-07-25 13:25:11,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:11,260 INFO L225 Difference]: With dead ends: 139 [2018-07-25 13:25:11,260 INFO L226 Difference]: Without dead ends: 93 [2018-07-25 13:25:11,262 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1242, Invalid=3048, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 13:25:11,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-07-25 13:25:11,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-07-25 13:25:11,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-07-25 13:25:11,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 94 transitions. [2018-07-25 13:25:11,275 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 94 transitions. Word has length 90 [2018-07-25 13:25:11,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:11,275 INFO L472 AbstractCegarLoop]: Abstraction has 93 states and 94 transitions. [2018-07-25 13:25:11,276 INFO L473 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-07-25 13:25:11,276 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 94 transitions. [2018-07-25 13:25:11,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-07-25 13:25:11,276 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:11,277 INFO L354 BasicCegarLoop]: trace histogram [23, 22, 22, 21, 1, 1, 1, 1] [2018-07-25 13:25:11,277 INFO L415 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:11,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1552661773, now seen corresponding path program 33 times [2018-07-25 13:25:11,277 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:11,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:11,406 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 506 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:11,407 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:11,407 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-07-25 13:25:11,407 INFO L451 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-07-25 13:25:11,407 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-07-25 13:25:11,408 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2018-07-25 13:25:11,408 INFO L87 Difference]: Start difference. First operand 93 states and 94 transitions. Second operand 27 states. [2018-07-25 13:25:11,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:11,529 INFO L93 Difference]: Finished difference Result 99 states and 101 transitions. [2018-07-25 13:25:11,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-07-25 13:25:11,529 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 92 [2018-07-25 13:25:11,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:11,530 INFO L225 Difference]: With dead ends: 99 [2018-07-25 13:25:11,530 INFO L226 Difference]: Without dead ends: 97 [2018-07-25 13:25:11,531 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=926, Invalid=1524, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 13:25:11,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-07-25 13:25:11,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-07-25 13:25:11,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-07-25 13:25:11,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 98 transitions. [2018-07-25 13:25:11,544 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 98 transitions. Word has length 92 [2018-07-25 13:25:11,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:11,544 INFO L472 AbstractCegarLoop]: Abstraction has 97 states and 98 transitions. [2018-07-25 13:25:11,545 INFO L473 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-07-25 13:25:11,545 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 98 transitions. [2018-07-25 13:25:11,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-07-25 13:25:11,546 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:11,546 INFO L354 BasicCegarLoop]: trace histogram [24, 23, 23, 22, 1, 1, 1, 1] [2018-07-25 13:25:11,546 INFO L415 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:11,546 INFO L82 PathProgramCache]: Analyzing trace with hash 2078536679, now seen corresponding path program 34 times [2018-07-25 13:25:11,546 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:11,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:11,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 552 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:11,771 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:11,772 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-25 13:25:11,772 INFO L451 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-25 13:25:11,772 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-25 13:25:11,773 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 13:25:11,773 INFO L87 Difference]: Start difference. First operand 97 states and 98 transitions. Second operand 48 states. [2018-07-25 13:25:11,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:11,977 INFO L93 Difference]: Finished difference Result 149 states and 151 transitions. [2018-07-25 13:25:11,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-07-25 13:25:11,978 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 96 [2018-07-25 13:25:11,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:11,979 INFO L225 Difference]: With dead ends: 149 [2018-07-25 13:25:11,979 INFO L226 Difference]: Without dead ends: 99 [2018-07-25 13:25:11,983 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1380, Invalid=3450, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 13:25:11,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-07-25 13:25:11,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-07-25 13:25:11,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-07-25 13:25:11,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2018-07-25 13:25:11,996 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 96 [2018-07-25 13:25:11,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:11,996 INFO L472 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2018-07-25 13:25:11,996 INFO L473 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-25 13:25:11,996 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2018-07-25 13:25:11,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-07-25 13:25:11,997 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:11,997 INFO L354 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 1, 1, 1, 1] [2018-07-25 13:25:11,997 INFO L415 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:11,998 INFO L82 PathProgramCache]: Analyzing trace with hash 224399075, now seen corresponding path program 35 times [2018-07-25 13:25:11,998 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:12,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:12,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 552 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:12,237 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:12,237 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-07-25 13:25:12,238 INFO L451 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-07-25 13:25:12,238 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-07-25 13:25:12,239 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=624, Invalid=1728, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 13:25:12,239 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand 49 states. [2018-07-25 13:25:12,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:12,428 INFO L93 Difference]: Finished difference Result 151 states and 153 transitions. [2018-07-25 13:25:12,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-07-25 13:25:12,428 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 98 [2018-07-25 13:25:12,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:12,429 INFO L225 Difference]: With dead ends: 151 [2018-07-25 13:25:12,429 INFO L226 Difference]: Without dead ends: 101 [2018-07-25 13:25:12,431 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1475, Invalid=3637, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 13:25:12,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-07-25 13:25:12,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-07-25 13:25:12,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-07-25 13:25:12,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 102 transitions. [2018-07-25 13:25:12,443 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 102 transitions. Word has length 98 [2018-07-25 13:25:12,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:12,443 INFO L472 AbstractCegarLoop]: Abstraction has 101 states and 102 transitions. [2018-07-25 13:25:12,445 INFO L473 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-07-25 13:25:12,445 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 102 transitions. [2018-07-25 13:25:12,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-07-25 13:25:12,446 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:12,446 INFO L354 BasicCegarLoop]: trace histogram [25, 24, 24, 23, 1, 1, 1, 1] [2018-07-25 13:25:12,446 INFO L415 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:12,446 INFO L82 PathProgramCache]: Analyzing trace with hash 809589471, now seen corresponding path program 36 times [2018-07-25 13:25:12,447 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:12,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:12,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 600 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:12,585 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:12,585 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-07-25 13:25:12,586 INFO L451 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-07-25 13:25:12,586 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-07-25 13:25:12,586 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2018-07-25 13:25:12,587 INFO L87 Difference]: Start difference. First operand 101 states and 102 transitions. Second operand 29 states. [2018-07-25 13:25:12,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:12,711 INFO L93 Difference]: Finished difference Result 107 states and 109 transitions. [2018-07-25 13:25:12,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-07-25 13:25:12,711 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 100 [2018-07-25 13:25:12,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:12,712 INFO L225 Difference]: With dead ends: 107 [2018-07-25 13:25:12,713 INFO L226 Difference]: Without dead ends: 105 [2018-07-25 13:25:12,714 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1081, Invalid=1781, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 13:25:12,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-07-25 13:25:12,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-07-25 13:25:12,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-07-25 13:25:12,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions. [2018-07-25 13:25:12,725 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 100 [2018-07-25 13:25:12,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:12,726 INFO L472 AbstractCegarLoop]: Abstraction has 105 states and 106 transitions. [2018-07-25 13:25:12,726 INFO L473 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-07-25 13:25:12,726 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 106 transitions. [2018-07-25 13:25:12,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-07-25 13:25:12,727 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:12,727 INFO L354 BasicCegarLoop]: trace histogram [26, 25, 25, 24, 1, 1, 1, 1] [2018-07-25 13:25:12,727 INFO L415 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:12,728 INFO L82 PathProgramCache]: Analyzing trace with hash 726349267, now seen corresponding path program 37 times [2018-07-25 13:25:12,728 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:12,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:13,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1250 backedges. 650 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:13,011 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:13,011 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-25 13:25:13,011 INFO L451 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-25 13:25:13,012 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-25 13:25:13,013 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 13:25:13,013 INFO L87 Difference]: Start difference. First operand 105 states and 106 transitions. Second operand 52 states. [2018-07-25 13:25:13,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:13,257 INFO L93 Difference]: Finished difference Result 161 states and 163 transitions. [2018-07-25 13:25:13,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-07-25 13:25:13,258 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 104 [2018-07-25 13:25:13,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:13,259 INFO L225 Difference]: With dead ends: 161 [2018-07-25 13:25:13,259 INFO L226 Difference]: Without dead ends: 107 [2018-07-25 13:25:13,261 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=1625, Invalid=4075, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 13:25:13,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-07-25 13:25:13,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-07-25 13:25:13,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-07-25 13:25:13,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 108 transitions. [2018-07-25 13:25:13,276 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 108 transitions. Word has length 104 [2018-07-25 13:25:13,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:13,277 INFO L472 AbstractCegarLoop]: Abstraction has 107 states and 108 transitions. [2018-07-25 13:25:13,277 INFO L473 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-25 13:25:13,277 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 108 transitions. [2018-07-25 13:25:13,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-07-25 13:25:13,278 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:13,278 INFO L354 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 1, 1, 1, 1] [2018-07-25 13:25:13,278 INFO L415 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:13,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1735038159, now seen corresponding path program 38 times [2018-07-25 13:25:13,279 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:13,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:13,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 650 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:13,616 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:13,617 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-07-25 13:25:13,617 INFO L451 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-07-25 13:25:13,617 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-07-25 13:25:13,618 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=728, Invalid=2028, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 13:25:13,618 INFO L87 Difference]: Start difference. First operand 107 states and 108 transitions. Second operand 53 states. [2018-07-25 13:25:13,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:13,856 INFO L93 Difference]: Finished difference Result 163 states and 165 transitions. [2018-07-25 13:25:13,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-07-25 13:25:13,856 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 106 [2018-07-25 13:25:13,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:13,857 INFO L225 Difference]: With dead ends: 163 [2018-07-25 13:25:13,858 INFO L226 Difference]: Without dead ends: 109 [2018-07-25 13:25:13,860 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 901 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=1728, Invalid=4278, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 13:25:13,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-07-25 13:25:13,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-07-25 13:25:13,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-07-25 13:25:13,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 110 transitions. [2018-07-25 13:25:13,873 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 110 transitions. Word has length 106 [2018-07-25 13:25:13,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:13,873 INFO L472 AbstractCegarLoop]: Abstraction has 109 states and 110 transitions. [2018-07-25 13:25:13,873 INFO L473 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-07-25 13:25:13,874 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 110 transitions. [2018-07-25 13:25:13,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-07-25 13:25:13,875 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:13,875 INFO L354 BasicCegarLoop]: trace histogram [27, 26, 26, 25, 1, 1, 1, 1] [2018-07-25 13:25:13,875 INFO L415 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:13,875 INFO L82 PathProgramCache]: Analyzing trace with hash 422454475, now seen corresponding path program 39 times [2018-07-25 13:25:13,875 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:13,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:14,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1352 backedges. 702 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:14,029 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:14,030 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-07-25 13:25:14,030 INFO L451 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-07-25 13:25:14,030 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-07-25 13:25:14,030 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2018-07-25 13:25:14,031 INFO L87 Difference]: Start difference. First operand 109 states and 110 transitions. Second operand 31 states. [2018-07-25 13:25:14,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:14,178 INFO L93 Difference]: Finished difference Result 115 states and 117 transitions. [2018-07-25 13:25:14,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-07-25 13:25:14,178 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 108 [2018-07-25 13:25:14,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:14,179 INFO L225 Difference]: With dead ends: 115 [2018-07-25 13:25:14,179 INFO L226 Difference]: Without dead ends: 113 [2018-07-25 13:25:14,181 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 729 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1248, Invalid=2058, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 13:25:14,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-07-25 13:25:14,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-07-25 13:25:14,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-07-25 13:25:14,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 114 transitions. [2018-07-25 13:25:14,195 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 114 transitions. Word has length 108 [2018-07-25 13:25:14,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:14,195 INFO L472 AbstractCegarLoop]: Abstraction has 113 states and 114 transitions. [2018-07-25 13:25:14,195 INFO L473 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-07-25 13:25:14,195 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 114 transitions. [2018-07-25 13:25:14,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-07-25 13:25:14,196 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:14,197 INFO L354 BasicCegarLoop]: trace histogram [28, 27, 27, 26, 1, 1, 1, 1] [2018-07-25 13:25:14,197 INFO L415 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:14,197 INFO L82 PathProgramCache]: Analyzing trace with hash -609670721, now seen corresponding path program 40 times [2018-07-25 13:25:14,197 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:14,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:14,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 756 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:14,475 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:14,475 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-25 13:25:14,476 INFO L451 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-25 13:25:14,476 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-25 13:25:14,477 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=811, Invalid=2269, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 13:25:14,477 INFO L87 Difference]: Start difference. First operand 113 states and 114 transitions. Second operand 56 states. [2018-07-25 13:25:14,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:14,706 INFO L93 Difference]: Finished difference Result 173 states and 175 transitions. [2018-07-25 13:25:14,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-07-25 13:25:14,706 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 112 [2018-07-25 13:25:14,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:14,707 INFO L225 Difference]: With dead ends: 173 [2018-07-25 13:25:14,707 INFO L226 Difference]: Without dead ends: 115 [2018-07-25 13:25:14,710 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1027 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1890, Invalid=4752, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 13:25:14,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-07-25 13:25:14,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-07-25 13:25:14,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-07-25 13:25:14,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 116 transitions. [2018-07-25 13:25:14,725 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 116 transitions. Word has length 112 [2018-07-25 13:25:14,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:14,725 INFO L472 AbstractCegarLoop]: Abstraction has 115 states and 116 transitions. [2018-07-25 13:25:14,725 INFO L473 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-25 13:25:14,725 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 116 transitions. [2018-07-25 13:25:14,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-07-25 13:25:14,726 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:14,726 INFO L354 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 1, 1, 1, 1] [2018-07-25 13:25:14,727 INFO L415 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:14,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1662530373, now seen corresponding path program 41 times [2018-07-25 13:25:14,727 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:14,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:15,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 756 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:15,063 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:15,063 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-07-25 13:25:15,064 INFO L451 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-07-25 13:25:15,064 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-07-25 13:25:15,065 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=840, Invalid=2352, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 13:25:15,065 INFO L87 Difference]: Start difference. First operand 115 states and 116 transitions. Second operand 57 states. [2018-07-25 13:25:15,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:15,307 INFO L93 Difference]: Finished difference Result 175 states and 177 transitions. [2018-07-25 13:25:15,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-07-25 13:25:15,309 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 114 [2018-07-25 13:25:15,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:15,310 INFO L225 Difference]: With dead ends: 175 [2018-07-25 13:25:15,310 INFO L226 Difference]: Without dead ends: 117 [2018-07-25 13:25:15,314 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1054 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=2001, Invalid=4971, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 13:25:15,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-07-25 13:25:15,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-07-25 13:25:15,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-07-25 13:25:15,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 118 transitions. [2018-07-25 13:25:15,328 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 118 transitions. Word has length 114 [2018-07-25 13:25:15,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:15,329 INFO L472 AbstractCegarLoop]: Abstraction has 117 states and 118 transitions. [2018-07-25 13:25:15,329 INFO L473 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-07-25 13:25:15,329 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 118 transitions. [2018-07-25 13:25:15,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-07-25 13:25:15,330 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:15,330 INFO L354 BasicCegarLoop]: trace histogram [29, 28, 28, 27, 1, 1, 1, 1] [2018-07-25 13:25:15,331 INFO L415 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:15,331 INFO L82 PathProgramCache]: Analyzing trace with hash 151625911, now seen corresponding path program 42 times [2018-07-25 13:25:15,331 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:15,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:15,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 812 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:15,491 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:15,491 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-07-25 13:25:15,492 INFO L451 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-07-25 13:25:15,492 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-07-25 13:25:15,492 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 13:25:15,493 INFO L87 Difference]: Start difference. First operand 117 states and 118 transitions. Second operand 33 states. [2018-07-25 13:25:15,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:15,635 INFO L93 Difference]: Finished difference Result 123 states and 125 transitions. [2018-07-25 13:25:15,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-07-25 13:25:15,636 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 116 [2018-07-25 13:25:15,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:15,637 INFO L225 Difference]: With dead ends: 123 [2018-07-25 13:25:15,637 INFO L226 Difference]: Without dead ends: 121 [2018-07-25 13:25:15,638 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 841 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1427, Invalid=2355, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 13:25:15,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-07-25 13:25:15,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-07-25 13:25:15,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-07-25 13:25:15,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 122 transitions. [2018-07-25 13:25:15,652 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 122 transitions. Word has length 116 [2018-07-25 13:25:15,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:15,653 INFO L472 AbstractCegarLoop]: Abstraction has 121 states and 122 transitions. [2018-07-25 13:25:15,653 INFO L473 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-07-25 13:25:15,653 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 122 transitions. [2018-07-25 13:25:15,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-07-25 13:25:15,654 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:15,654 INFO L354 BasicCegarLoop]: trace histogram [30, 29, 29, 28, 1, 1, 1, 1] [2018-07-25 13:25:15,654 INFO L415 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:15,654 INFO L82 PathProgramCache]: Analyzing trace with hash 944557995, now seen corresponding path program 43 times [2018-07-25 13:25:15,654 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:15,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:15,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 870 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:15,939 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:15,939 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-25 13:25:15,940 INFO L451 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-25 13:25:15,940 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-25 13:25:15,941 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=929, Invalid=2611, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 13:25:15,941 INFO L87 Difference]: Start difference. First operand 121 states and 122 transitions. Second operand 60 states. [2018-07-25 13:25:16,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:16,202 INFO L93 Difference]: Finished difference Result 185 states and 187 transitions. [2018-07-25 13:25:16,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-07-25 13:25:16,203 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 120 [2018-07-25 13:25:16,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:16,204 INFO L225 Difference]: With dead ends: 185 [2018-07-25 13:25:16,204 INFO L226 Difference]: Without dead ends: 123 [2018-07-25 13:25:16,206 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1190 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=2175, Invalid=5481, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 13:25:16,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-07-25 13:25:16,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-07-25 13:25:16,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-07-25 13:25:16,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 124 transitions. [2018-07-25 13:25:16,225 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 124 transitions. Word has length 120 [2018-07-25 13:25:16,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:16,225 INFO L472 AbstractCegarLoop]: Abstraction has 123 states and 124 transitions. [2018-07-25 13:25:16,225 INFO L473 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-25 13:25:16,226 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 124 transitions. [2018-07-25 13:25:16,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-07-25 13:25:16,228 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:16,228 INFO L354 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 1, 1, 1, 1] [2018-07-25 13:25:16,228 INFO L415 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:16,228 INFO L82 PathProgramCache]: Analyzing trace with hash 489076391, now seen corresponding path program 44 times [2018-07-25 13:25:16,229 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:16,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:16,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 870 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:16,589 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:16,589 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-07-25 13:25:16,590 INFO L451 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-07-25 13:25:16,590 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-07-25 13:25:16,591 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 13:25:16,591 INFO L87 Difference]: Start difference. First operand 123 states and 124 transitions. Second operand 61 states. [2018-07-25 13:25:16,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:16,917 INFO L93 Difference]: Finished difference Result 187 states and 189 transitions. [2018-07-25 13:25:16,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-07-25 13:25:16,918 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 122 [2018-07-25 13:25:16,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:16,919 INFO L225 Difference]: With dead ends: 187 [2018-07-25 13:25:16,919 INFO L226 Difference]: Without dead ends: 125 [2018-07-25 13:25:16,920 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1219 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=2294, Invalid=5716, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 13:25:16,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-07-25 13:25:16,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-07-25 13:25:16,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-07-25 13:25:16,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 126 transitions. [2018-07-25 13:25:16,938 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 126 transitions. Word has length 122 [2018-07-25 13:25:16,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:16,939 INFO L472 AbstractCegarLoop]: Abstraction has 125 states and 126 transitions. [2018-07-25 13:25:16,939 INFO L473 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-07-25 13:25:16,939 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 126 transitions. [2018-07-25 13:25:16,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-07-25 13:25:16,940 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:16,940 INFO L354 BasicCegarLoop]: trace histogram [31, 30, 30, 29, 1, 1, 1, 1] [2018-07-25 13:25:16,940 INFO L415 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:16,941 INFO L82 PathProgramCache]: Analyzing trace with hash 857919139, now seen corresponding path program 45 times [2018-07-25 13:25:16,941 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:16,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:17,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 930 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:17,119 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:17,120 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-07-25 13:25:17,120 INFO L451 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-07-25 13:25:17,120 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-07-25 13:25:17,121 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 13:25:17,121 INFO L87 Difference]: Start difference. First operand 125 states and 126 transitions. Second operand 35 states. [2018-07-25 13:25:17,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:17,282 INFO L93 Difference]: Finished difference Result 131 states and 133 transitions. [2018-07-25 13:25:17,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-07-25 13:25:17,282 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 124 [2018-07-25 13:25:17,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:17,283 INFO L225 Difference]: With dead ends: 131 [2018-07-25 13:25:17,284 INFO L226 Difference]: Without dead ends: 129 [2018-07-25 13:25:17,284 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 961 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1618, Invalid=2672, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 13:25:17,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-07-25 13:25:17,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-07-25 13:25:17,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-07-25 13:25:17,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 130 transitions. [2018-07-25 13:25:17,299 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 130 transitions. Word has length 124 [2018-07-25 13:25:17,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:17,300 INFO L472 AbstractCegarLoop]: Abstraction has 129 states and 130 transitions. [2018-07-25 13:25:17,300 INFO L473 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-07-25 13:25:17,300 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 130 transitions. [2018-07-25 13:25:17,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-07-25 13:25:17,301 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:17,301 INFO L354 BasicCegarLoop]: trace histogram [32, 31, 31, 30, 1, 1, 1, 1] [2018-07-25 13:25:17,301 INFO L415 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:17,302 INFO L82 PathProgramCache]: Analyzing trace with hash 889530263, now seen corresponding path program 46 times [2018-07-25 13:25:17,302 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:17,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:17,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1922 backedges. 992 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:17,572 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:17,572 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-25 13:25:17,573 INFO L451 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-25 13:25:17,573 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-25 13:25:17,574 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1055, Invalid=2977, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 13:25:17,574 INFO L87 Difference]: Start difference. First operand 129 states and 130 transitions. Second operand 64 states. [2018-07-25 13:25:17,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:17,823 INFO L93 Difference]: Finished difference Result 197 states and 199 transitions. [2018-07-25 13:25:17,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-07-25 13:25:17,823 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 128 [2018-07-25 13:25:17,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:17,824 INFO L225 Difference]: With dead ends: 197 [2018-07-25 13:25:17,824 INFO L226 Difference]: Without dead ends: 131 [2018-07-25 13:25:17,826 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1365 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2480, Invalid=6262, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 13:25:17,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-07-25 13:25:17,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-07-25 13:25:17,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-07-25 13:25:17,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 132 transitions. [2018-07-25 13:25:17,842 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 132 transitions. Word has length 128 [2018-07-25 13:25:17,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:17,843 INFO L472 AbstractCegarLoop]: Abstraction has 131 states and 132 transitions. [2018-07-25 13:25:17,843 INFO L473 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-25 13:25:17,843 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 132 transitions. [2018-07-25 13:25:17,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-07-25 13:25:17,844 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:17,844 INFO L354 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 1, 1, 1, 1] [2018-07-25 13:25:17,844 INFO L415 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:17,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1611246957, now seen corresponding path program 47 times [2018-07-25 13:25:17,845 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:17,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:18,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 992 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:18,114 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:18,114 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-07-25 13:25:18,114 INFO L451 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-07-25 13:25:18,115 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-07-25 13:25:18,115 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1088, Invalid=3072, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 13:25:18,116 INFO L87 Difference]: Start difference. First operand 131 states and 132 transitions. Second operand 65 states. [2018-07-25 13:25:18,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:18,371 INFO L93 Difference]: Finished difference Result 199 states and 201 transitions. [2018-07-25 13:25:18,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-07-25 13:25:18,371 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 130 [2018-07-25 13:25:18,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:18,372 INFO L225 Difference]: With dead ends: 199 [2018-07-25 13:25:18,372 INFO L226 Difference]: Without dead ends: 133 [2018-07-25 13:25:18,374 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1396 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2607, Invalid=6513, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 13:25:18,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-07-25 13:25:18,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-07-25 13:25:18,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-07-25 13:25:18,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 134 transitions. [2018-07-25 13:25:18,390 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 134 transitions. Word has length 130 [2018-07-25 13:25:18,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:18,391 INFO L472 AbstractCegarLoop]: Abstraction has 133 states and 134 transitions. [2018-07-25 13:25:18,391 INFO L473 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-07-25 13:25:18,391 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 134 transitions. [2018-07-25 13:25:18,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-07-25 13:25:18,392 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:18,393 INFO L354 BasicCegarLoop]: trace histogram [33, 32, 32, 31, 1, 1, 1, 1] [2018-07-25 13:25:18,393 INFO L415 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:18,393 INFO L82 PathProgramCache]: Analyzing trace with hash 323530383, now seen corresponding path program 48 times [2018-07-25 13:25:18,394 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:18,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:18,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2048 backedges. 1056 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:18,563 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:18,563 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-07-25 13:25:18,563 INFO L451 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-07-25 13:25:18,564 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-07-25 13:25:18,564 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 13:25:18,564 INFO L87 Difference]: Start difference. First operand 133 states and 134 transitions. Second operand 37 states. [2018-07-25 13:25:18,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:18,721 INFO L93 Difference]: Finished difference Result 139 states and 141 transitions. [2018-07-25 13:25:18,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-07-25 13:25:18,721 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 132 [2018-07-25 13:25:18,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:18,723 INFO L225 Difference]: With dead ends: 139 [2018-07-25 13:25:18,723 INFO L226 Difference]: Without dead ends: 137 [2018-07-25 13:25:18,724 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1089 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1821, Invalid=3009, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 13:25:18,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-07-25 13:25:18,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-07-25 13:25:18,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-07-25 13:25:18,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 138 transitions. [2018-07-25 13:25:18,739 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 138 transitions. Word has length 132 [2018-07-25 13:25:18,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:18,740 INFO L472 AbstractCegarLoop]: Abstraction has 137 states and 138 transitions. [2018-07-25 13:25:18,740 INFO L473 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-07-25 13:25:18,740 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 138 transitions. [2018-07-25 13:25:18,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-07-25 13:25:18,744 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:18,744 INFO L354 BasicCegarLoop]: trace histogram [34, 33, 33, 32, 1, 1, 1, 1] [2018-07-25 13:25:18,744 INFO L415 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:18,744 INFO L82 PathProgramCache]: Analyzing trace with hash -836685437, now seen corresponding path program 49 times [2018-07-25 13:25:18,744 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:18,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:19,047 INFO L134 CoverageAnalysis]: Checked inductivity of 2178 backedges. 1122 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:19,047 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:19,047 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-25 13:25:19,048 INFO L451 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-25 13:25:19,048 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-25 13:25:19,049 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1189, Invalid=3367, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 13:25:19,049 INFO L87 Difference]: Start difference. First operand 137 states and 138 transitions. Second operand 68 states. [2018-07-25 13:25:19,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:19,347 INFO L93 Difference]: Finished difference Result 209 states and 211 transitions. [2018-07-25 13:25:19,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-07-25 13:25:19,348 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 136 [2018-07-25 13:25:19,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:19,349 INFO L225 Difference]: With dead ends: 209 [2018-07-25 13:25:19,349 INFO L226 Difference]: Without dead ends: 139 [2018-07-25 13:25:19,351 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1552 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=2805, Invalid=7095, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 13:25:19,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-07-25 13:25:19,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-07-25 13:25:19,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-07-25 13:25:19,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 140 transitions. [2018-07-25 13:25:19,367 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 140 transitions. Word has length 136 [2018-07-25 13:25:19,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:19,367 INFO L472 AbstractCegarLoop]: Abstraction has 139 states and 140 transitions. [2018-07-25 13:25:19,368 INFO L473 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-25 13:25:19,368 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 140 transitions. [2018-07-25 13:25:19,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-07-25 13:25:19,369 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:19,369 INFO L354 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 1, 1, 1, 1] [2018-07-25 13:25:19,370 INFO L415 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:19,370 INFO L82 PathProgramCache]: Analyzing trace with hash -442130305, now seen corresponding path program 50 times [2018-07-25 13:25:19,370 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:19,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:19,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1122 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:19,735 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:19,735 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-07-25 13:25:19,736 INFO L451 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-07-25 13:25:19,736 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-07-25 13:25:19,737 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1224, Invalid=3468, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 13:25:19,737 INFO L87 Difference]: Start difference. First operand 139 states and 140 transitions. Second operand 69 states. [2018-07-25 13:25:20,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:20,030 INFO L93 Difference]: Finished difference Result 211 states and 213 transitions. [2018-07-25 13:25:20,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-07-25 13:25:20,030 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 138 [2018-07-25 13:25:20,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:20,032 INFO L225 Difference]: With dead ends: 211 [2018-07-25 13:25:20,032 INFO L226 Difference]: Without dead ends: 141 [2018-07-25 13:25:20,033 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1585 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=2940, Invalid=7362, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 13:25:20,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-07-25 13:25:20,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-07-25 13:25:20,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-07-25 13:25:20,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 142 transitions. [2018-07-25 13:25:20,049 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 142 transitions. Word has length 138 [2018-07-25 13:25:20,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:20,049 INFO L472 AbstractCegarLoop]: Abstraction has 141 states and 142 transitions. [2018-07-25 13:25:20,049 INFO L473 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-07-25 13:25:20,049 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 142 transitions. [2018-07-25 13:25:20,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-07-25 13:25:20,051 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:20,051 INFO L354 BasicCegarLoop]: trace histogram [35, 34, 34, 33, 1, 1, 1, 1] [2018-07-25 13:25:20,051 INFO L415 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:20,051 INFO L82 PathProgramCache]: Analyzing trace with hash 768229499, now seen corresponding path program 51 times [2018-07-25 13:25:20,051 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:20,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:20,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2312 backedges. 1190 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:20,218 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:20,218 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-07-25 13:25:20,219 INFO L451 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-07-25 13:25:20,219 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-07-25 13:25:20,219 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 13:25:20,220 INFO L87 Difference]: Start difference. First operand 141 states and 142 transitions. Second operand 39 states. [2018-07-25 13:25:20,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:20,393 INFO L93 Difference]: Finished difference Result 147 states and 149 transitions. [2018-07-25 13:25:20,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-07-25 13:25:20,393 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 140 [2018-07-25 13:25:20,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:20,394 INFO L225 Difference]: With dead ends: 147 [2018-07-25 13:25:20,394 INFO L226 Difference]: Without dead ends: 145 [2018-07-25 13:25:20,396 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1225 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2036, Invalid=3366, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 13:25:20,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-07-25 13:25:20,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-07-25 13:25:20,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-07-25 13:25:20,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 146 transitions. [2018-07-25 13:25:20,415 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 146 transitions. Word has length 140 [2018-07-25 13:25:20,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:20,416 INFO L472 AbstractCegarLoop]: Abstraction has 145 states and 146 transitions. [2018-07-25 13:25:20,416 INFO L473 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-07-25 13:25:20,416 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 146 transitions. [2018-07-25 13:25:20,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-07-25 13:25:20,417 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:20,417 INFO L354 BasicCegarLoop]: trace histogram [36, 35, 35, 34, 1, 1, 1, 1] [2018-07-25 13:25:20,418 INFO L415 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:20,418 INFO L82 PathProgramCache]: Analyzing trace with hash -932188817, now seen corresponding path program 52 times [2018-07-25 13:25:20,418 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:20,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:20,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 1260 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:20,732 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:20,732 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-25 13:25:20,732 INFO L451 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-25 13:25:20,733 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-25 13:25:20,733 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1331, Invalid=3781, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 13:25:20,734 INFO L87 Difference]: Start difference. First operand 145 states and 146 transitions. Second operand 72 states. [2018-07-25 13:25:21,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:21,035 INFO L93 Difference]: Finished difference Result 221 states and 223 transitions. [2018-07-25 13:25:21,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-07-25 13:25:21,036 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 144 [2018-07-25 13:25:21,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:21,037 INFO L225 Difference]: With dead ends: 221 [2018-07-25 13:25:21,037 INFO L226 Difference]: Without dead ends: 147 [2018-07-25 13:25:21,039 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1751 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3150, Invalid=7980, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 13:25:21,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-07-25 13:25:21,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-07-25 13:25:21,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-07-25 13:25:21,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 148 transitions. [2018-07-25 13:25:21,057 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 148 transitions. Word has length 144 [2018-07-25 13:25:21,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:21,057 INFO L472 AbstractCegarLoop]: Abstraction has 147 states and 148 transitions. [2018-07-25 13:25:21,057 INFO L473 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-25 13:25:21,057 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 148 transitions. [2018-07-25 13:25:21,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-07-25 13:25:21,059 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:21,060 INFO L354 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 1, 1, 1, 1] [2018-07-25 13:25:21,060 INFO L415 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:21,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1996726379, now seen corresponding path program 53 times [2018-07-25 13:25:21,060 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:21,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:21,383 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 1260 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:21,384 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:21,384 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-07-25 13:25:21,384 INFO L451 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-07-25 13:25:21,385 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-07-25 13:25:21,385 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1368, Invalid=3888, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 13:25:21,386 INFO L87 Difference]: Start difference. First operand 147 states and 148 transitions. Second operand 73 states. [2018-07-25 13:25:21,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:21,715 INFO L93 Difference]: Finished difference Result 223 states and 225 transitions. [2018-07-25 13:25:21,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-07-25 13:25:21,715 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 146 [2018-07-25 13:25:21,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:21,716 INFO L225 Difference]: With dead ends: 223 [2018-07-25 13:25:21,716 INFO L226 Difference]: Without dead ends: 149 [2018-07-25 13:25:21,718 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1786 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3293, Invalid=8263, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 13:25:21,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-07-25 13:25:21,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-07-25 13:25:21,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-07-25 13:25:21,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 150 transitions. [2018-07-25 13:25:21,735 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 150 transitions. Word has length 146 [2018-07-25 13:25:21,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:21,735 INFO L472 AbstractCegarLoop]: Abstraction has 149 states and 150 transitions. [2018-07-25 13:25:21,735 INFO L473 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-07-25 13:25:21,735 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 150 transitions. [2018-07-25 13:25:21,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-07-25 13:25:21,737 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:21,737 INFO L354 BasicCegarLoop]: trace histogram [37, 36, 36, 35, 1, 1, 1, 1] [2018-07-25 13:25:21,737 INFO L415 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:21,738 INFO L82 PathProgramCache]: Analyzing trace with hash -814316441, now seen corresponding path program 54 times [2018-07-25 13:25:21,738 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:21,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:21,932 INFO L134 CoverageAnalysis]: Checked inductivity of 2592 backedges. 1332 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:21,933 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:21,933 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-07-25 13:25:21,933 INFO L451 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-07-25 13:25:21,933 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-07-25 13:25:21,934 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 13:25:21,934 INFO L87 Difference]: Start difference. First operand 149 states and 150 transitions. Second operand 41 states. [2018-07-25 13:25:22,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:22,116 INFO L93 Difference]: Finished difference Result 155 states and 157 transitions. [2018-07-25 13:25:22,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-07-25 13:25:22,116 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 148 [2018-07-25 13:25:22,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:22,117 INFO L225 Difference]: With dead ends: 155 [2018-07-25 13:25:22,118 INFO L226 Difference]: Without dead ends: 153 [2018-07-25 13:25:22,119 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1369 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2263, Invalid=3743, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 13:25:22,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-07-25 13:25:22,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-07-25 13:25:22,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-07-25 13:25:22,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 154 transitions. [2018-07-25 13:25:22,139 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 154 transitions. Word has length 148 [2018-07-25 13:25:22,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:22,140 INFO L472 AbstractCegarLoop]: Abstraction has 153 states and 154 transitions. [2018-07-25 13:25:22,140 INFO L473 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-07-25 13:25:22,140 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 154 transitions. [2018-07-25 13:25:22,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-07-25 13:25:22,141 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:22,142 INFO L354 BasicCegarLoop]: trace histogram [38, 37, 37, 36, 1, 1, 1, 1] [2018-07-25 13:25:22,142 INFO L415 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:22,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1900043099, now seen corresponding path program 55 times [2018-07-25 13:25:22,142 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:22,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:22,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2738 backedges. 1406 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:22,598 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:22,598 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-25 13:25:22,599 INFO L451 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-25 13:25:22,600 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-25 13:25:22,600 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1481, Invalid=4219, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 13:25:22,601 INFO L87 Difference]: Start difference. First operand 153 states and 154 transitions. Second operand 76 states. [2018-07-25 13:25:23,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:23,006 INFO L93 Difference]: Finished difference Result 233 states and 235 transitions. [2018-07-25 13:25:23,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-07-25 13:25:23,007 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 152 [2018-07-25 13:25:23,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:23,008 INFO L225 Difference]: With dead ends: 233 [2018-07-25 13:25:23,008 INFO L226 Difference]: Without dead ends: 155 [2018-07-25 13:25:23,009 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1962 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3515, Invalid=8917, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 13:25:23,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-07-25 13:25:23,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-07-25 13:25:23,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-07-25 13:25:23,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 156 transitions. [2018-07-25 13:25:23,026 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 156 transitions. Word has length 152 [2018-07-25 13:25:23,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:23,027 INFO L472 AbstractCegarLoop]: Abstraction has 155 states and 156 transitions. [2018-07-25 13:25:23,027 INFO L473 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-25 13:25:23,027 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 156 transitions. [2018-07-25 13:25:23,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-07-25 13:25:23,028 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:23,028 INFO L354 BasicCegarLoop]: trace histogram [38, 38, 37, 37, 1, 1, 1, 1] [2018-07-25 13:25:23,029 INFO L415 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:23,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1700745815, now seen corresponding path program 56 times [2018-07-25 13:25:23,029 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:23,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:23,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 1406 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:23,353 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:23,353 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-07-25 13:25:23,354 INFO L451 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-07-25 13:25:23,354 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-07-25 13:25:23,355 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1520, Invalid=4332, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 13:25:23,355 INFO L87 Difference]: Start difference. First operand 155 states and 156 transitions. Second operand 77 states. [2018-07-25 13:25:23,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:23,635 INFO L93 Difference]: Finished difference Result 235 states and 237 transitions. [2018-07-25 13:25:23,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-07-25 13:25:23,635 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 154 [2018-07-25 13:25:23,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:23,637 INFO L225 Difference]: With dead ends: 235 [2018-07-25 13:25:23,637 INFO L226 Difference]: Without dead ends: 157 [2018-07-25 13:25:23,639 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1999 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3666, Invalid=9216, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 13:25:23,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-07-25 13:25:23,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-07-25 13:25:23,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-07-25 13:25:23,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 158 transitions. [2018-07-25 13:25:23,653 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 158 transitions. Word has length 154 [2018-07-25 13:25:23,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:23,653 INFO L472 AbstractCegarLoop]: Abstraction has 157 states and 158 transitions. [2018-07-25 13:25:23,653 INFO L473 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-07-25 13:25:23,653 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 158 transitions. [2018-07-25 13:25:23,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-07-25 13:25:23,655 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:23,655 INFO L354 BasicCegarLoop]: trace histogram [39, 38, 38, 37, 1, 1, 1, 1] [2018-07-25 13:25:23,655 INFO L415 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:23,655 INFO L82 PathProgramCache]: Analyzing trace with hash -845383085, now seen corresponding path program 57 times [2018-07-25 13:25:23,655 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:23,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:23,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2888 backedges. 1482 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:23,858 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:23,858 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-07-25 13:25:23,858 INFO L451 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-07-25 13:25:23,862 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-07-25 13:25:23,862 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 13:25:23,863 INFO L87 Difference]: Start difference. First operand 157 states and 158 transitions. Second operand 43 states. [2018-07-25 13:25:24,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:24,047 INFO L93 Difference]: Finished difference Result 163 states and 165 transitions. [2018-07-25 13:25:24,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-07-25 13:25:24,047 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 156 [2018-07-25 13:25:24,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:24,048 INFO L225 Difference]: With dead ends: 163 [2018-07-25 13:25:24,049 INFO L226 Difference]: Without dead ends: 161 [2018-07-25 13:25:24,050 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1521 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2502, Invalid=4140, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 13:25:24,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-07-25 13:25:24,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-07-25 13:25:24,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-07-25 13:25:24,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 162 transitions. [2018-07-25 13:25:24,066 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 162 transitions. Word has length 156 [2018-07-25 13:25:24,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:24,067 INFO L472 AbstractCegarLoop]: Abstraction has 161 states and 162 transitions. [2018-07-25 13:25:24,067 INFO L473 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-07-25 13:25:24,067 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 162 transitions. [2018-07-25 13:25:24,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-07-25 13:25:24,069 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:24,069 INFO L354 BasicCegarLoop]: trace histogram [40, 39, 39, 38, 1, 1, 1, 1] [2018-07-25 13:25:24,069 INFO L415 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:24,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1583446855, now seen corresponding path program 58 times [2018-07-25 13:25:24,070 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:24,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:24,429 INFO L134 CoverageAnalysis]: Checked inductivity of 3042 backedges. 1560 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:24,429 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:24,429 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-25 13:25:24,429 INFO L451 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-25 13:25:24,430 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-25 13:25:24,433 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1639, Invalid=4681, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 13:25:24,434 INFO L87 Difference]: Start difference. First operand 161 states and 162 transitions. Second operand 80 states. [2018-07-25 13:25:24,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:24,766 INFO L93 Difference]: Finished difference Result 245 states and 247 transitions. [2018-07-25 13:25:24,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-07-25 13:25:24,766 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 160 [2018-07-25 13:25:24,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:24,767 INFO L225 Difference]: With dead ends: 245 [2018-07-25 13:25:24,767 INFO L226 Difference]: Without dead ends: 163 [2018-07-25 13:25:24,770 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2185 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3900, Invalid=9906, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 13:25:24,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-07-25 13:25:24,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-07-25 13:25:24,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-07-25 13:25:24,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 164 transitions. [2018-07-25 13:25:24,788 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 164 transitions. Word has length 160 [2018-07-25 13:25:24,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:24,788 INFO L472 AbstractCegarLoop]: Abstraction has 163 states and 164 transitions. [2018-07-25 13:25:24,789 INFO L473 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-25 13:25:24,789 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 164 transitions. [2018-07-25 13:25:24,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-07-25 13:25:24,790 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:24,790 INFO L354 BasicCegarLoop]: trace histogram [40, 40, 39, 39, 1, 1, 1, 1] [2018-07-25 13:25:24,791 INFO L415 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:24,791 INFO L82 PathProgramCache]: Analyzing trace with hash 176666179, now seen corresponding path program 59 times [2018-07-25 13:25:24,791 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:24,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:25,156 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1560 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:25,156 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:25,156 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-07-25 13:25:25,157 INFO L451 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-07-25 13:25:25,157 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-07-25 13:25:25,158 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1680, Invalid=4800, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 13:25:25,159 INFO L87 Difference]: Start difference. First operand 163 states and 164 transitions. Second operand 81 states. [2018-07-25 13:25:25,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:25,497 INFO L93 Difference]: Finished difference Result 247 states and 249 transitions. [2018-07-25 13:25:25,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-07-25 13:25:25,497 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 162 [2018-07-25 13:25:25,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:25,498 INFO L225 Difference]: With dead ends: 247 [2018-07-25 13:25:25,499 INFO L226 Difference]: Without dead ends: 165 [2018-07-25 13:25:25,502 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2224 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=4059, Invalid=10221, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 13:25:25,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-07-25 13:25:25,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-07-25 13:25:25,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-07-25 13:25:25,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 166 transitions. [2018-07-25 13:25:25,519 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 166 transitions. Word has length 162 [2018-07-25 13:25:25,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:25,520 INFO L472 AbstractCegarLoop]: Abstraction has 165 states and 166 transitions. [2018-07-25 13:25:25,520 INFO L473 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-07-25 13:25:25,520 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 166 transitions. [2018-07-25 13:25:25,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-07-25 13:25:25,522 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:25,522 INFO L354 BasicCegarLoop]: trace histogram [41, 40, 40, 39, 1, 1, 1, 1] [2018-07-25 13:25:25,522 INFO L415 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:25,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1175134783, now seen corresponding path program 60 times [2018-07-25 13:25:25,523 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:25,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:25,816 INFO L134 CoverageAnalysis]: Checked inductivity of 3200 backedges. 1640 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:25,817 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:25,817 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-07-25 13:25:25,817 INFO L451 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-07-25 13:25:25,818 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-07-25 13:25:25,818 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 13:25:25,818 INFO L87 Difference]: Start difference. First operand 165 states and 166 transitions. Second operand 45 states. [2018-07-25 13:25:26,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:26,000 INFO L93 Difference]: Finished difference Result 171 states and 173 transitions. [2018-07-25 13:25:26,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-07-25 13:25:26,000 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 164 [2018-07-25 13:25:26,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:26,002 INFO L225 Difference]: With dead ends: 171 [2018-07-25 13:25:26,002 INFO L226 Difference]: Without dead ends: 169 [2018-07-25 13:25:26,003 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1681 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2753, Invalid=4557, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 13:25:26,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-07-25 13:25:26,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-07-25 13:25:26,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-07-25 13:25:26,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 170 transitions. [2018-07-25 13:25:26,020 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 170 transitions. Word has length 164 [2018-07-25 13:25:26,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:26,020 INFO L472 AbstractCegarLoop]: Abstraction has 169 states and 170 transitions. [2018-07-25 13:25:26,021 INFO L473 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-07-25 13:25:26,021 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 170 transitions. [2018-07-25 13:25:26,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-07-25 13:25:26,022 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:26,023 INFO L354 BasicCegarLoop]: trace histogram [42, 41, 41, 40, 1, 1, 1, 1] [2018-07-25 13:25:26,023 INFO L415 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:26,023 INFO L82 PathProgramCache]: Analyzing trace with hash 773999923, now seen corresponding path program 61 times [2018-07-25 13:25:26,023 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:26,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:26,396 INFO L134 CoverageAnalysis]: Checked inductivity of 3362 backedges. 1722 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:26,397 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:26,397 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-07-25 13:25:26,397 INFO L451 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-07-25 13:25:26,398 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-07-25 13:25:26,399 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1805, Invalid=5167, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 13:25:26,399 INFO L87 Difference]: Start difference. First operand 169 states and 170 transitions. Second operand 84 states. [2018-07-25 13:25:26,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:26,719 INFO L93 Difference]: Finished difference Result 257 states and 259 transitions. [2018-07-25 13:25:26,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-07-25 13:25:26,719 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 168 [2018-07-25 13:25:26,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:26,720 INFO L225 Difference]: With dead ends: 257 [2018-07-25 13:25:26,720 INFO L226 Difference]: Without dead ends: 171 [2018-07-25 13:25:26,723 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2420 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=4305, Invalid=10947, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 13:25:26,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-07-25 13:25:26,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-07-25 13:25:26,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-07-25 13:25:26,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 172 transitions. [2018-07-25 13:25:26,742 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 172 transitions. Word has length 168 [2018-07-25 13:25:26,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:26,742 INFO L472 AbstractCegarLoop]: Abstraction has 171 states and 172 transitions. [2018-07-25 13:25:26,743 INFO L473 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-07-25 13:25:26,743 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 172 transitions. [2018-07-25 13:25:26,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-07-25 13:25:26,745 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:26,745 INFO L354 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 1, 1, 1, 1] [2018-07-25 13:25:26,746 INFO L415 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:26,746 INFO L82 PathProgramCache]: Analyzing trace with hash -926168017, now seen corresponding path program 62 times [2018-07-25 13:25:26,746 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:26,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:27,133 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 1722 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:27,133 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:27,134 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2018-07-25 13:25:27,134 INFO L451 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-07-25 13:25:27,135 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-07-25 13:25:27,136 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1848, Invalid=5292, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 13:25:27,136 INFO L87 Difference]: Start difference. First operand 171 states and 172 transitions. Second operand 85 states. [2018-07-25 13:25:27,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:27,504 INFO L93 Difference]: Finished difference Result 259 states and 261 transitions. [2018-07-25 13:25:27,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-07-25 13:25:27,505 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 170 [2018-07-25 13:25:27,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:27,506 INFO L225 Difference]: With dead ends: 259 [2018-07-25 13:25:27,506 INFO L226 Difference]: Without dead ends: 173 [2018-07-25 13:25:27,509 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2461 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=4472, Invalid=11278, Unknown=0, NotChecked=0, Total=15750 [2018-07-25 13:25:27,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-07-25 13:25:27,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-07-25 13:25:27,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-07-25 13:25:27,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 174 transitions. [2018-07-25 13:25:27,534 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 174 transitions. Word has length 170 [2018-07-25 13:25:27,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:27,534 INFO L472 AbstractCegarLoop]: Abstraction has 173 states and 174 transitions. [2018-07-25 13:25:27,535 INFO L473 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-07-25 13:25:27,535 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 174 transitions. [2018-07-25 13:25:27,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-07-25 13:25:27,536 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:27,537 INFO L354 BasicCegarLoop]: trace histogram [43, 42, 42, 41, 1, 1, 1, 1] [2018-07-25 13:25:27,537 INFO L415 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:27,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1594981419, now seen corresponding path program 63 times [2018-07-25 13:25:27,537 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:27,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:27,763 INFO L134 CoverageAnalysis]: Checked inductivity of 3528 backedges. 1806 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:27,764 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:27,764 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-07-25 13:25:27,764 INFO L451 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-07-25 13:25:27,765 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-07-25 13:25:27,765 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 13:25:27,765 INFO L87 Difference]: Start difference. First operand 173 states and 174 transitions. Second operand 47 states. [2018-07-25 13:25:27,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:27,960 INFO L93 Difference]: Finished difference Result 179 states and 181 transitions. [2018-07-25 13:25:27,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-07-25 13:25:27,961 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 172 [2018-07-25 13:25:27,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:27,962 INFO L225 Difference]: With dead ends: 179 [2018-07-25 13:25:27,962 INFO L226 Difference]: Without dead ends: 177 [2018-07-25 13:25:27,964 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1849 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3016, Invalid=4994, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 13:25:27,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-07-25 13:25:27,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-07-25 13:25:27,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-07-25 13:25:27,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 178 transitions. [2018-07-25 13:25:27,981 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 178 transitions. Word has length 172 [2018-07-25 13:25:27,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:27,981 INFO L472 AbstractCegarLoop]: Abstraction has 177 states and 178 transitions. [2018-07-25 13:25:27,982 INFO L473 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-07-25 13:25:27,982 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 178 transitions. [2018-07-25 13:25:27,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-07-25 13:25:27,983 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:27,984 INFO L354 BasicCegarLoop]: trace histogram [44, 43, 43, 42, 1, 1, 1, 1] [2018-07-25 13:25:27,984 INFO L415 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:27,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1196544287, now seen corresponding path program 64 times [2018-07-25 13:25:27,984 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:28,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:28,377 INFO L134 CoverageAnalysis]: Checked inductivity of 3698 backedges. 1892 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:28,378 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:28,378 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-07-25 13:25:28,378 INFO L451 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-07-25 13:25:28,379 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-07-25 13:25:28,380 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1979, Invalid=5677, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 13:25:28,380 INFO L87 Difference]: Start difference. First operand 177 states and 178 transitions. Second operand 88 states. [2018-07-25 13:25:28,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:28,835 INFO L93 Difference]: Finished difference Result 269 states and 271 transitions. [2018-07-25 13:25:28,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-07-25 13:25:28,836 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 176 [2018-07-25 13:25:28,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:28,837 INFO L225 Difference]: With dead ends: 269 [2018-07-25 13:25:28,837 INFO L226 Difference]: Without dead ends: 179 [2018-07-25 13:25:28,840 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2667 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=4730, Invalid=12040, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 13:25:28,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-07-25 13:25:28,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-07-25 13:25:28,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-07-25 13:25:28,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 180 transitions. [2018-07-25 13:25:28,860 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 180 transitions. Word has length 176 [2018-07-25 13:25:28,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:28,860 INFO L472 AbstractCegarLoop]: Abstraction has 179 states and 180 transitions. [2018-07-25 13:25:28,860 INFO L473 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-07-25 13:25:28,860 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 180 transitions. [2018-07-25 13:25:28,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-07-25 13:25:28,862 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:28,863 INFO L354 BasicCegarLoop]: trace histogram [44, 44, 43, 43, 1, 1, 1, 1] [2018-07-25 13:25:28,863 INFO L415 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:28,863 INFO L82 PathProgramCache]: Analyzing trace with hash -889547749, now seen corresponding path program 65 times [2018-07-25 13:25:28,863 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:28,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:29,430 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1892 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:29,430 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:29,430 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-07-25 13:25:29,431 INFO L451 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-07-25 13:25:29,431 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-07-25 13:25:29,432 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2024, Invalid=5808, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 13:25:29,432 INFO L87 Difference]: Start difference. First operand 179 states and 180 transitions. Second operand 89 states. [2018-07-25 13:25:29,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:29,779 INFO L93 Difference]: Finished difference Result 271 states and 273 transitions. [2018-07-25 13:25:29,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-07-25 13:25:29,780 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 178 [2018-07-25 13:25:29,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:29,781 INFO L225 Difference]: With dead ends: 271 [2018-07-25 13:25:29,781 INFO L226 Difference]: Without dead ends: 181 [2018-07-25 13:25:29,783 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2710 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=4905, Invalid=12387, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 13:25:29,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-07-25 13:25:29,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-07-25 13:25:29,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-07-25 13:25:29,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 182 transitions. [2018-07-25 13:25:29,799 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 182 transitions. Word has length 178 [2018-07-25 13:25:29,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:29,800 INFO L472 AbstractCegarLoop]: Abstraction has 181 states and 182 transitions. [2018-07-25 13:25:29,800 INFO L473 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-07-25 13:25:29,800 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 182 transitions. [2018-07-25 13:25:29,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-07-25 13:25:29,802 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:29,802 INFO L354 BasicCegarLoop]: trace histogram [45, 44, 44, 43, 1, 1, 1, 1] [2018-07-25 13:25:29,802 INFO L415 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:29,802 INFO L82 PathProgramCache]: Analyzing trace with hash 125732887, now seen corresponding path program 66 times [2018-07-25 13:25:29,802 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:29,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:30,027 INFO L134 CoverageAnalysis]: Checked inductivity of 3872 backedges. 1980 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:30,028 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:30,028 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-07-25 13:25:30,028 INFO L451 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-07-25 13:25:30,029 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-07-25 13:25:30,029 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 13:25:30,029 INFO L87 Difference]: Start difference. First operand 181 states and 182 transitions. Second operand 49 states. [2018-07-25 13:25:30,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:30,230 INFO L93 Difference]: Finished difference Result 187 states and 189 transitions. [2018-07-25 13:25:30,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-07-25 13:25:30,230 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 180 [2018-07-25 13:25:30,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:30,232 INFO L225 Difference]: With dead ends: 187 [2018-07-25 13:25:30,232 INFO L226 Difference]: Without dead ends: 185 [2018-07-25 13:25:30,233 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2025 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3291, Invalid=5451, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 13:25:30,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-07-25 13:25:30,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-07-25 13:25:30,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-07-25 13:25:30,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 186 transitions. [2018-07-25 13:25:30,250 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 186 transitions. Word has length 180 [2018-07-25 13:25:30,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:30,250 INFO L472 AbstractCegarLoop]: Abstraction has 185 states and 186 transitions. [2018-07-25 13:25:30,250 INFO L473 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-07-25 13:25:30,250 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 186 transitions. [2018-07-25 13:25:30,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-07-25 13:25:30,252 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:30,253 INFO L354 BasicCegarLoop]: trace histogram [46, 45, 45, 44, 1, 1, 1, 1] [2018-07-25 13:25:30,253 INFO L415 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:30,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1723922677, now seen corresponding path program 67 times [2018-07-25 13:25:30,253 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:30,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:30,724 INFO L134 CoverageAnalysis]: Checked inductivity of 4050 backedges. 2070 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:30,724 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:30,725 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-07-25 13:25:30,725 INFO L451 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-07-25 13:25:30,726 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-07-25 13:25:30,727 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2161, Invalid=6211, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 13:25:30,727 INFO L87 Difference]: Start difference. First operand 185 states and 186 transitions. Second operand 92 states. [2018-07-25 13:25:31,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:31,157 INFO L93 Difference]: Finished difference Result 281 states and 283 transitions. [2018-07-25 13:25:31,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-07-25 13:25:31,158 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 184 [2018-07-25 13:25:31,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:31,159 INFO L225 Difference]: With dead ends: 281 [2018-07-25 13:25:31,159 INFO L226 Difference]: Without dead ends: 187 [2018-07-25 13:25:31,161 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2926 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5175, Invalid=13185, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 13:25:31,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-07-25 13:25:31,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-07-25 13:25:31,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-07-25 13:25:31,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 188 transitions. [2018-07-25 13:25:31,178 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 188 transitions. Word has length 184 [2018-07-25 13:25:31,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:31,179 INFO L472 AbstractCegarLoop]: Abstraction has 187 states and 188 transitions. [2018-07-25 13:25:31,179 INFO L473 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-07-25 13:25:31,179 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 188 transitions. [2018-07-25 13:25:31,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-07-25 13:25:31,183 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:31,183 INFO L354 BasicCegarLoop]: trace histogram [46, 46, 45, 45, 1, 1, 1, 1] [2018-07-25 13:25:31,183 INFO L415 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:31,184 INFO L82 PathProgramCache]: Analyzing trace with hash -1000141305, now seen corresponding path program 68 times [2018-07-25 13:25:31,184 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:31,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:31,583 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 2070 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:31,583 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:31,583 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2018-07-25 13:25:31,584 INFO L451 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-07-25 13:25:31,584 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-07-25 13:25:31,585 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2208, Invalid=6348, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 13:25:31,585 INFO L87 Difference]: Start difference. First operand 187 states and 188 transitions. Second operand 93 states. [2018-07-25 13:25:31,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:31,951 INFO L93 Difference]: Finished difference Result 283 states and 285 transitions. [2018-07-25 13:25:31,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-07-25 13:25:31,952 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 186 [2018-07-25 13:25:31,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:31,953 INFO L225 Difference]: With dead ends: 283 [2018-07-25 13:25:31,953 INFO L226 Difference]: Without dead ends: 189 [2018-07-25 13:25:31,955 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2971 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5358, Invalid=13548, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 13:25:31,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-07-25 13:25:31,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-07-25 13:25:31,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-07-25 13:25:31,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 190 transitions. [2018-07-25 13:25:31,974 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 190 transitions. Word has length 186 [2018-07-25 13:25:31,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:31,975 INFO L472 AbstractCegarLoop]: Abstraction has 189 states and 190 transitions. [2018-07-25 13:25:31,975 INFO L473 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-07-25 13:25:31,975 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 190 transitions. [2018-07-25 13:25:31,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-07-25 13:25:31,977 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:31,977 INFO L354 BasicCegarLoop]: trace histogram [47, 46, 46, 45, 1, 1, 1, 1] [2018-07-25 13:25:31,977 INFO L415 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:31,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1230944765, now seen corresponding path program 69 times [2018-07-25 13:25:31,978 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:32,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:32,237 INFO L134 CoverageAnalysis]: Checked inductivity of 4232 backedges. 2162 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:32,237 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:32,238 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-07-25 13:25:32,238 INFO L451 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-07-25 13:25:32,238 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-07-25 13:25:32,239 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 13:25:32,239 INFO L87 Difference]: Start difference. First operand 189 states and 190 transitions. Second operand 51 states. [2018-07-25 13:25:32,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:32,443 INFO L93 Difference]: Finished difference Result 195 states and 197 transitions. [2018-07-25 13:25:32,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-07-25 13:25:32,443 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 188 [2018-07-25 13:25:32,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:32,445 INFO L225 Difference]: With dead ends: 195 [2018-07-25 13:25:32,445 INFO L226 Difference]: Without dead ends: 193 [2018-07-25 13:25:32,446 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2209 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3578, Invalid=5928, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 13:25:32,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-07-25 13:25:32,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-07-25 13:25:32,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-07-25 13:25:32,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 194 transitions. [2018-07-25 13:25:32,463 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 194 transitions. Word has length 188 [2018-07-25 13:25:32,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:32,463 INFO L472 AbstractCegarLoop]: Abstraction has 193 states and 194 transitions. [2018-07-25 13:25:32,463 INFO L473 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-07-25 13:25:32,463 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 194 transitions. [2018-07-25 13:25:32,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-07-25 13:25:32,469 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:32,469 INFO L354 BasicCegarLoop]: trace histogram [48, 47, 47, 46, 1, 1, 1, 1] [2018-07-25 13:25:32,470 INFO L415 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:32,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1538846455, now seen corresponding path program 70 times [2018-07-25 13:25:32,470 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:32,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:32,963 INFO L134 CoverageAnalysis]: Checked inductivity of 4418 backedges. 2256 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:32,963 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:32,964 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-07-25 13:25:32,964 INFO L451 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-07-25 13:25:32,965 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-07-25 13:25:32,965 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2351, Invalid=6769, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 13:25:32,965 INFO L87 Difference]: Start difference. First operand 193 states and 194 transitions. Second operand 96 states. [2018-07-25 13:25:33,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:33,313 INFO L93 Difference]: Finished difference Result 293 states and 295 transitions. [2018-07-25 13:25:33,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-07-25 13:25:33,313 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 192 [2018-07-25 13:25:33,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:33,314 INFO L225 Difference]: With dead ends: 293 [2018-07-25 13:25:33,314 INFO L226 Difference]: Without dead ends: 195 [2018-07-25 13:25:33,316 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3197 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5640, Invalid=14382, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 13:25:33,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-07-25 13:25:33,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-07-25 13:25:33,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-07-25 13:25:33,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 196 transitions. [2018-07-25 13:25:33,333 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 196 transitions. Word has length 192 [2018-07-25 13:25:33,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:33,333 INFO L472 AbstractCegarLoop]: Abstraction has 195 states and 196 transitions. [2018-07-25 13:25:33,333 INFO L473 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-07-25 13:25:33,333 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 196 transitions. [2018-07-25 13:25:33,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-07-25 13:25:33,335 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:33,335 INFO L354 BasicCegarLoop]: trace histogram [48, 48, 47, 47, 1, 1, 1, 1] [2018-07-25 13:25:33,338 INFO L415 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:33,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1328268813, now seen corresponding path program 71 times [2018-07-25 13:25:33,339 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:33,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:33,782 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 2256 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:33,783 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:33,783 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96] total 96 [2018-07-25 13:25:33,783 INFO L451 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-07-25 13:25:33,784 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-07-25 13:25:33,785 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2400, Invalid=6912, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 13:25:33,785 INFO L87 Difference]: Start difference. First operand 195 states and 196 transitions. Second operand 97 states. [2018-07-25 13:25:34,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:34,151 INFO L93 Difference]: Finished difference Result 295 states and 297 transitions. [2018-07-25 13:25:34,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-07-25 13:25:34,151 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 194 [2018-07-25 13:25:34,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:34,153 INFO L225 Difference]: With dead ends: 295 [2018-07-25 13:25:34,153 INFO L226 Difference]: Without dead ends: 197 [2018-07-25 13:25:34,155 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3244 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5831, Invalid=14761, Unknown=0, NotChecked=0, Total=20592 [2018-07-25 13:25:34,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-07-25 13:25:34,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-07-25 13:25:34,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-07-25 13:25:34,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 198 transitions. [2018-07-25 13:25:34,174 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 198 transitions. Word has length 194 [2018-07-25 13:25:34,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:34,174 INFO L472 AbstractCegarLoop]: Abstraction has 197 states and 198 transitions. [2018-07-25 13:25:34,174 INFO L473 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-07-25 13:25:34,174 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 198 transitions. [2018-07-25 13:25:34,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-07-25 13:25:34,176 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:34,176 INFO L354 BasicCegarLoop]: trace histogram [49, 48, 48, 47, 1, 1, 1, 1] [2018-07-25 13:25:34,177 INFO L415 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:34,177 INFO L82 PathProgramCache]: Analyzing trace with hash 742962671, now seen corresponding path program 72 times [2018-07-25 13:25:34,177 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:34,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:34,444 INFO L134 CoverageAnalysis]: Checked inductivity of 4608 backedges. 2352 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:34,445 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:34,445 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-07-25 13:25:34,446 INFO L451 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-07-25 13:25:34,446 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-07-25 13:25:34,446 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 13:25:34,446 INFO L87 Difference]: Start difference. First operand 197 states and 198 transitions. Second operand 53 states. [2018-07-25 13:25:34,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:34,645 INFO L93 Difference]: Finished difference Result 203 states and 205 transitions. [2018-07-25 13:25:34,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-07-25 13:25:34,646 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 196 [2018-07-25 13:25:34,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:34,647 INFO L225 Difference]: With dead ends: 203 [2018-07-25 13:25:34,647 INFO L226 Difference]: Without dead ends: 201 [2018-07-25 13:25:34,648 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2401 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3877, Invalid=6425, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 13:25:34,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-07-25 13:25:34,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-07-25 13:25:34,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-07-25 13:25:34,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 202 transitions. [2018-07-25 13:25:34,669 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 202 transitions. Word has length 196 [2018-07-25 13:25:34,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:34,669 INFO L472 AbstractCegarLoop]: Abstraction has 201 states and 202 transitions. [2018-07-25 13:25:34,669 INFO L473 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-07-25 13:25:34,669 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 202 transitions. [2018-07-25 13:25:34,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-07-25 13:25:34,672 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:34,673 INFO L354 BasicCegarLoop]: trace histogram [50, 49, 49, 48, 1, 1, 1, 1] [2018-07-25 13:25:34,673 INFO L415 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:34,673 INFO L82 PathProgramCache]: Analyzing trace with hash -821131037, now seen corresponding path program 73 times [2018-07-25 13:25:34,674 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:34,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:35,156 INFO L134 CoverageAnalysis]: Checked inductivity of 4802 backedges. 2450 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:35,157 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:35,157 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-07-25 13:25:35,157 INFO L451 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-07-25 13:25:35,158 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-07-25 13:25:35,159 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2549, Invalid=7351, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 13:25:35,159 INFO L87 Difference]: Start difference. First operand 201 states and 202 transitions. Second operand 100 states. [2018-07-25 13:25:35,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:35,541 INFO L93 Difference]: Finished difference Result 305 states and 307 transitions. [2018-07-25 13:25:35,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-07-25 13:25:35,542 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 200 [2018-07-25 13:25:35,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:35,543 INFO L225 Difference]: With dead ends: 305 [2018-07-25 13:25:35,543 INFO L226 Difference]: Without dead ends: 203 [2018-07-25 13:25:35,546 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3480 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6125, Invalid=15631, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 13:25:35,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-07-25 13:25:35,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-07-25 13:25:35,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-07-25 13:25:35,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 204 transitions. [2018-07-25 13:25:35,565 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 204 transitions. Word has length 200 [2018-07-25 13:25:35,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:35,565 INFO L472 AbstractCegarLoop]: Abstraction has 203 states and 204 transitions. [2018-07-25 13:25:35,565 INFO L473 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-07-25 13:25:35,565 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 204 transitions. [2018-07-25 13:25:35,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-07-25 13:25:35,567 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:35,567 INFO L354 BasicCegarLoop]: trace histogram [50, 50, 49, 49, 1, 1, 1, 1] [2018-07-25 13:25:35,568 INFO L415 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:35,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1801644065, now seen corresponding path program 74 times [2018-07-25 13:25:35,568 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:35,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:36,164 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 2450 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:36,164 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:36,164 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100] total 100 [2018-07-25 13:25:36,165 INFO L451 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-07-25 13:25:36,166 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-07-25 13:25:36,167 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2600, Invalid=7500, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 13:25:36,167 INFO L87 Difference]: Start difference. First operand 203 states and 204 transitions. Second operand 101 states. [2018-07-25 13:25:36,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:36,608 INFO L93 Difference]: Finished difference Result 307 states and 309 transitions. [2018-07-25 13:25:36,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-07-25 13:25:36,608 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 202 [2018-07-25 13:25:36,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:36,609 INFO L225 Difference]: With dead ends: 307 [2018-07-25 13:25:36,609 INFO L226 Difference]: Without dead ends: 205 [2018-07-25 13:25:36,610 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3529 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=6324, Invalid=16026, Unknown=0, NotChecked=0, Total=22350 [2018-07-25 13:25:36,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-07-25 13:25:36,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-07-25 13:25:36,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-07-25 13:25:36,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 206 transitions. [2018-07-25 13:25:36,625 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 206 transitions. Word has length 202 [2018-07-25 13:25:36,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:36,625 INFO L472 AbstractCegarLoop]: Abstraction has 205 states and 206 transitions. [2018-07-25 13:25:36,625 INFO L473 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-07-25 13:25:36,626 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 206 transitions. [2018-07-25 13:25:36,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-07-25 13:25:36,627 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:36,627 INFO L354 BasicCegarLoop]: trace histogram [51, 50, 50, 49, 1, 1, 1, 1] [2018-07-25 13:25:36,627 INFO L415 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:36,627 INFO L82 PathProgramCache]: Analyzing trace with hash 818141147, now seen corresponding path program 75 times [2018-07-25 13:25:36,627 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:36,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:36,862 INFO L134 CoverageAnalysis]: Checked inductivity of 5000 backedges. 2550 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:36,863 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:36,863 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-07-25 13:25:36,863 INFO L451 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-07-25 13:25:36,864 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-07-25 13:25:36,864 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 13:25:36,864 INFO L87 Difference]: Start difference. First operand 205 states and 206 transitions. Second operand 55 states. [2018-07-25 13:25:37,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:37,003 INFO L93 Difference]: Finished difference Result 211 states and 213 transitions. [2018-07-25 13:25:37,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-07-25 13:25:37,003 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 204 [2018-07-25 13:25:37,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:37,004 INFO L225 Difference]: With dead ends: 211 [2018-07-25 13:25:37,005 INFO L226 Difference]: Without dead ends: 209 [2018-07-25 13:25:37,006 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2601 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4188, Invalid=6942, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 13:25:37,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-07-25 13:25:37,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-07-25 13:25:37,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-07-25 13:25:37,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 210 transitions. [2018-07-25 13:25:37,029 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 210 transitions. Word has length 204 [2018-07-25 13:25:37,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:37,029 INFO L472 AbstractCegarLoop]: Abstraction has 209 states and 210 transitions. [2018-07-25 13:25:37,029 INFO L473 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-07-25 13:25:37,029 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 210 transitions. [2018-07-25 13:25:37,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-07-25 13:25:37,030 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:37,030 INFO L354 BasicCegarLoop]: trace histogram [52, 51, 51, 50, 1, 1, 1, 1] [2018-07-25 13:25:37,031 INFO L415 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:37,031 INFO L82 PathProgramCache]: Analyzing trace with hash -66136881, now seen corresponding path program 76 times [2018-07-25 13:25:37,031 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:37,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:37,340 INFO L134 CoverageAnalysis]: Checked inductivity of 5202 backedges. 2652 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:37,340 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:37,340 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-07-25 13:25:37,340 INFO L451 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-07-25 13:25:37,341 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-07-25 13:25:37,342 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2755, Invalid=7957, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 13:25:37,342 INFO L87 Difference]: Start difference. First operand 209 states and 210 transitions. Second operand 104 states. [2018-07-25 13:25:37,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:37,657 INFO L93 Difference]: Finished difference Result 317 states and 319 transitions. [2018-07-25 13:25:37,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-07-25 13:25:37,658 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 208 [2018-07-25 13:25:37,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:37,659 INFO L225 Difference]: With dead ends: 317 [2018-07-25 13:25:37,659 INFO L226 Difference]: Without dead ends: 211 [2018-07-25 13:25:37,661 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3775 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6630, Invalid=16932, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 13:25:37,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-07-25 13:25:37,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-07-25 13:25:37,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-07-25 13:25:37,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 212 transitions. [2018-07-25 13:25:37,681 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 212 transitions. Word has length 208 [2018-07-25 13:25:37,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:37,681 INFO L472 AbstractCegarLoop]: Abstraction has 211 states and 212 transitions. [2018-07-25 13:25:37,681 INFO L473 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-07-25 13:25:37,682 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 212 transitions. [2018-07-25 13:25:37,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-07-25 13:25:37,683 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:37,683 INFO L354 BasicCegarLoop]: trace histogram [52, 52, 51, 51, 1, 1, 1, 1] [2018-07-25 13:25:37,683 INFO L415 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:37,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1015850955, now seen corresponding path program 77 times [2018-07-25 13:25:37,683 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:37,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:38,053 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 2652 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:38,053 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:38,053 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104] total 104 [2018-07-25 13:25:38,055 INFO L451 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-07-25 13:25:38,055 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-07-25 13:25:38,056 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2808, Invalid=8112, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 13:25:38,056 INFO L87 Difference]: Start difference. First operand 211 states and 212 transitions. Second operand 105 states. [2018-07-25 13:25:38,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:38,509 INFO L93 Difference]: Finished difference Result 319 states and 321 transitions. [2018-07-25 13:25:38,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-07-25 13:25:38,509 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 210 [2018-07-25 13:25:38,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:38,510 INFO L225 Difference]: With dead ends: 319 [2018-07-25 13:25:38,510 INFO L226 Difference]: Without dead ends: 213 [2018-07-25 13:25:38,513 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3826 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6837, Invalid=17343, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 13:25:38,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-07-25 13:25:38,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2018-07-25 13:25:38,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-07-25 13:25:38,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 214 transitions. [2018-07-25 13:25:38,532 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 214 transitions. Word has length 210 [2018-07-25 13:25:38,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:38,533 INFO L472 AbstractCegarLoop]: Abstraction has 213 states and 214 transitions. [2018-07-25 13:25:38,533 INFO L473 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-07-25 13:25:38,533 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 214 transitions. [2018-07-25 13:25:38,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-07-25 13:25:38,534 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:38,534 INFO L354 BasicCegarLoop]: trace histogram [53, 52, 52, 51, 1, 1, 1, 1] [2018-07-25 13:25:38,534 INFO L415 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:38,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1424075719, now seen corresponding path program 78 times [2018-07-25 13:25:38,534 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:38,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:38,764 INFO L134 CoverageAnalysis]: Checked inductivity of 5408 backedges. 2756 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:38,765 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:38,765 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-07-25 13:25:38,765 INFO L451 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-07-25 13:25:38,766 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-07-25 13:25:38,766 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 13:25:38,766 INFO L87 Difference]: Start difference. First operand 213 states and 214 transitions. Second operand 57 states. [2018-07-25 13:25:38,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:38,982 INFO L93 Difference]: Finished difference Result 219 states and 221 transitions. [2018-07-25 13:25:38,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-07-25 13:25:38,982 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 212 [2018-07-25 13:25:38,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:38,983 INFO L225 Difference]: With dead ends: 219 [2018-07-25 13:25:38,983 INFO L226 Difference]: Without dead ends: 217 [2018-07-25 13:25:38,984 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2809 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4511, Invalid=7479, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 13:25:38,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-07-25 13:25:38,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-07-25 13:25:38,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-07-25 13:25:38,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 218 transitions. [2018-07-25 13:25:38,999 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 218 transitions. Word has length 212 [2018-07-25 13:25:38,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:38,999 INFO L472 AbstractCegarLoop]: Abstraction has 217 states and 218 transitions. [2018-07-25 13:25:38,999 INFO L473 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-07-25 13:25:38,999 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 218 transitions. [2018-07-25 13:25:39,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-07-25 13:25:39,000 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:39,001 INFO L354 BasicCegarLoop]: trace histogram [54, 53, 53, 52, 1, 1, 1, 1] [2018-07-25 13:25:39,001 INFO L415 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:39,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1946735291, now seen corresponding path program 79 times [2018-07-25 13:25:39,001 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:39,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:39,334 INFO L134 CoverageAnalysis]: Checked inductivity of 5618 backedges. 2862 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:39,334 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:39,334 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2018-07-25 13:25:39,335 INFO L451 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-07-25 13:25:39,335 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-07-25 13:25:39,336 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2969, Invalid=8587, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 13:25:39,336 INFO L87 Difference]: Start difference. First operand 217 states and 218 transitions. Second operand 108 states. [2018-07-25 13:25:39,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:39,673 INFO L93 Difference]: Finished difference Result 329 states and 331 transitions. [2018-07-25 13:25:39,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-07-25 13:25:39,673 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 216 [2018-07-25 13:25:39,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:39,674 INFO L225 Difference]: With dead ends: 329 [2018-07-25 13:25:39,674 INFO L226 Difference]: Without dead ends: 219 [2018-07-25 13:25:39,676 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4082 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7155, Invalid=18285, Unknown=0, NotChecked=0, Total=25440 [2018-07-25 13:25:39,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-07-25 13:25:39,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-07-25 13:25:39,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-07-25 13:25:39,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 220 transitions. [2018-07-25 13:25:39,697 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 220 transitions. Word has length 216 [2018-07-25 13:25:39,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:39,697 INFO L472 AbstractCegarLoop]: Abstraction has 219 states and 220 transitions. [2018-07-25 13:25:39,697 INFO L473 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-07-25 13:25:39,697 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 220 transitions. [2018-07-25 13:25:39,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-07-25 13:25:39,699 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:39,699 INFO L354 BasicCegarLoop]: trace histogram [54, 54, 53, 53, 1, 1, 1, 1] [2018-07-25 13:25:39,699 INFO L415 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:39,699 INFO L82 PathProgramCache]: Analyzing trace with hash -34477641, now seen corresponding path program 80 times [2018-07-25 13:25:39,699 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:39,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:40,037 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 2862 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:40,037 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:40,037 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108] total 108 [2018-07-25 13:25:40,038 INFO L451 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-07-25 13:25:40,038 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-07-25 13:25:40,039 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3024, Invalid=8748, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 13:25:40,039 INFO L87 Difference]: Start difference. First operand 219 states and 220 transitions. Second operand 109 states. [2018-07-25 13:25:40,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:40,419 INFO L93 Difference]: Finished difference Result 331 states and 333 transitions. [2018-07-25 13:25:40,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-07-25 13:25:40,419 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 218 [2018-07-25 13:25:40,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:40,420 INFO L225 Difference]: With dead ends: 331 [2018-07-25 13:25:40,420 INFO L226 Difference]: Without dead ends: 221 [2018-07-25 13:25:40,422 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4135 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7370, Invalid=18712, Unknown=0, NotChecked=0, Total=26082 [2018-07-25 13:25:40,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-07-25 13:25:40,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2018-07-25 13:25:40,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-07-25 13:25:40,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 222 transitions. [2018-07-25 13:25:40,437 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 222 transitions. Word has length 218 [2018-07-25 13:25:40,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:40,437 INFO L472 AbstractCegarLoop]: Abstraction has 221 states and 222 transitions. [2018-07-25 13:25:40,437 INFO L473 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-07-25 13:25:40,437 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 222 transitions. [2018-07-25 13:25:40,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-07-25 13:25:40,438 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:40,438 INFO L354 BasicCegarLoop]: trace histogram [55, 54, 54, 53, 1, 1, 1, 1] [2018-07-25 13:25:40,439 INFO L415 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:40,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1309593165, now seen corresponding path program 81 times [2018-07-25 13:25:40,439 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:40,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:40,647 INFO L134 CoverageAnalysis]: Checked inductivity of 5832 backedges. 2970 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:40,648 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:40,648 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-07-25 13:25:40,648 INFO L451 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-07-25 13:25:40,649 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-07-25 13:25:40,649 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 13:25:40,649 INFO L87 Difference]: Start difference. First operand 221 states and 222 transitions. Second operand 59 states. [2018-07-25 13:25:40,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:40,804 INFO L93 Difference]: Finished difference Result 227 states and 229 transitions. [2018-07-25 13:25:40,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-07-25 13:25:40,805 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 220 [2018-07-25 13:25:40,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:40,806 INFO L225 Difference]: With dead ends: 227 [2018-07-25 13:25:40,806 INFO L226 Difference]: Without dead ends: 225 [2018-07-25 13:25:40,807 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3025 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4846, Invalid=8036, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 13:25:40,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-07-25 13:25:40,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2018-07-25 13:25:40,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-07-25 13:25:40,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 226 transitions. [2018-07-25 13:25:40,823 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 226 transitions. Word has length 220 [2018-07-25 13:25:40,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:40,823 INFO L472 AbstractCegarLoop]: Abstraction has 225 states and 226 transitions. [2018-07-25 13:25:40,823 INFO L473 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-07-25 13:25:40,823 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 226 transitions. [2018-07-25 13:25:40,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-07-25 13:25:40,824 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:40,824 INFO L354 BasicCegarLoop]: trace histogram [56, 55, 55, 54, 1, 1, 1, 1] [2018-07-25 13:25:40,824 INFO L415 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:40,825 INFO L82 PathProgramCache]: Analyzing trace with hash 281772711, now seen corresponding path program 82 times [2018-07-25 13:25:40,825 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:40,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:41,200 INFO L134 CoverageAnalysis]: Checked inductivity of 6050 backedges. 3080 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:41,201 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:41,201 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111] total 111 [2018-07-25 13:25:41,202 INFO L451 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-07-25 13:25:41,202 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-07-25 13:25:41,203 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3191, Invalid=9241, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 13:25:41,203 INFO L87 Difference]: Start difference. First operand 225 states and 226 transitions. Second operand 112 states. [2018-07-25 13:25:41,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:41,732 INFO L93 Difference]: Finished difference Result 341 states and 343 transitions. [2018-07-25 13:25:41,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-07-25 13:25:41,732 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 224 [2018-07-25 13:25:41,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:41,734 INFO L225 Difference]: With dead ends: 341 [2018-07-25 13:25:41,734 INFO L226 Difference]: Without dead ends: 227 [2018-07-25 13:25:41,737 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4401 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7700, Invalid=19690, Unknown=0, NotChecked=0, Total=27390 [2018-07-25 13:25:41,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-07-25 13:25:41,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-07-25 13:25:41,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-07-25 13:25:41,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 228 transitions. [2018-07-25 13:25:41,807 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 228 transitions. Word has length 224 [2018-07-25 13:25:41,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:41,807 INFO L472 AbstractCegarLoop]: Abstraction has 227 states and 228 transitions. [2018-07-25 13:25:41,807 INFO L473 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-07-25 13:25:41,807 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 228 transitions. [2018-07-25 13:25:41,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-07-25 13:25:41,808 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:41,809 INFO L354 BasicCegarLoop]: trace histogram [56, 56, 55, 55, 1, 1, 1, 1] [2018-07-25 13:25:41,809 INFO L415 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:41,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1989926307, now seen corresponding path program 83 times [2018-07-25 13:25:41,809 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:41,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:42,192 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 3080 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:42,192 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:42,192 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112] total 112 [2018-07-25 13:25:42,193 INFO L451 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-07-25 13:25:42,193 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-07-25 13:25:42,194 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3248, Invalid=9408, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 13:25:42,195 INFO L87 Difference]: Start difference. First operand 227 states and 228 transitions. Second operand 113 states. [2018-07-25 13:25:42,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:42,548 INFO L93 Difference]: Finished difference Result 343 states and 345 transitions. [2018-07-25 13:25:42,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-07-25 13:25:42,548 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 226 [2018-07-25 13:25:42,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:42,549 INFO L225 Difference]: With dead ends: 343 [2018-07-25 13:25:42,550 INFO L226 Difference]: Without dead ends: 229 [2018-07-25 13:25:42,551 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4456 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7923, Invalid=20133, Unknown=0, NotChecked=0, Total=28056 [2018-07-25 13:25:42,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-07-25 13:25:42,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2018-07-25 13:25:42,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-07-25 13:25:42,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 230 transitions. [2018-07-25 13:25:42,566 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 230 transitions. Word has length 226 [2018-07-25 13:25:42,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:42,566 INFO L472 AbstractCegarLoop]: Abstraction has 229 states and 230 transitions. [2018-07-25 13:25:42,566 INFO L473 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-07-25 13:25:42,567 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 230 transitions. [2018-07-25 13:25:42,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-07-25 13:25:42,568 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:42,568 INFO L354 BasicCegarLoop]: trace histogram [57, 56, 56, 55, 1, 1, 1, 1] [2018-07-25 13:25:42,568 INFO L415 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:42,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1446942305, now seen corresponding path program 84 times [2018-07-25 13:25:42,568 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:42,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:42,789 INFO L134 CoverageAnalysis]: Checked inductivity of 6272 backedges. 3192 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:42,789 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:42,789 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-07-25 13:25:42,789 INFO L451 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-07-25 13:25:42,790 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-07-25 13:25:42,790 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 13:25:42,790 INFO L87 Difference]: Start difference. First operand 229 states and 230 transitions. Second operand 61 states. [2018-07-25 13:25:42,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:42,956 INFO L93 Difference]: Finished difference Result 235 states and 237 transitions. [2018-07-25 13:25:42,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-07-25 13:25:42,956 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 228 [2018-07-25 13:25:42,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:42,957 INFO L225 Difference]: With dead ends: 235 [2018-07-25 13:25:42,957 INFO L226 Difference]: Without dead ends: 233 [2018-07-25 13:25:42,958 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3249 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5193, Invalid=8613, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 13:25:42,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-07-25 13:25:42,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2018-07-25 13:25:42,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-07-25 13:25:42,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 234 transitions. [2018-07-25 13:25:42,972 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 234 transitions. Word has length 228 [2018-07-25 13:25:42,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:42,973 INFO L472 AbstractCegarLoop]: Abstraction has 233 states and 234 transitions. [2018-07-25 13:25:42,973 INFO L473 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-07-25 13:25:42,973 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 234 transitions. [2018-07-25 13:25:42,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-07-25 13:25:42,974 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:42,974 INFO L354 BasicCegarLoop]: trace histogram [58, 57, 57, 56, 1, 1, 1, 1] [2018-07-25 13:25:42,974 INFO L415 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:42,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1264196461, now seen corresponding path program 85 times [2018-07-25 13:25:42,975 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:43,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:43,363 INFO L134 CoverageAnalysis]: Checked inductivity of 6498 backedges. 3306 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:43,364 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:43,364 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115] total 115 [2018-07-25 13:25:43,364 INFO L451 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-07-25 13:25:43,365 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-07-25 13:25:43,366 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3421, Invalid=9919, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 13:25:43,366 INFO L87 Difference]: Start difference. First operand 233 states and 234 transitions. Second operand 116 states. [2018-07-25 13:25:43,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:43,789 INFO L93 Difference]: Finished difference Result 353 states and 355 transitions. [2018-07-25 13:25:43,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-07-25 13:25:43,789 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 232 [2018-07-25 13:25:43,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:43,791 INFO L225 Difference]: With dead ends: 353 [2018-07-25 13:25:43,791 INFO L226 Difference]: Without dead ends: 235 [2018-07-25 13:25:43,792 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4732 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8265, Invalid=21147, Unknown=0, NotChecked=0, Total=29412 [2018-07-25 13:25:43,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-07-25 13:25:43,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-07-25 13:25:43,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-07-25 13:25:43,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 236 transitions. [2018-07-25 13:25:43,815 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 236 transitions. Word has length 232 [2018-07-25 13:25:43,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:43,815 INFO L472 AbstractCegarLoop]: Abstraction has 235 states and 236 transitions. [2018-07-25 13:25:43,815 INFO L473 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-07-25 13:25:43,815 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 236 transitions. [2018-07-25 13:25:43,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-07-25 13:25:43,817 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:43,817 INFO L354 BasicCegarLoop]: trace histogram [58, 58, 57, 57, 1, 1, 1, 1] [2018-07-25 13:25:43,817 INFO L415 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:43,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1289323407, now seen corresponding path program 86 times [2018-07-25 13:25:43,817 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:43,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:44,218 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 3306 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:44,219 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:44,219 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116] total 116 [2018-07-25 13:25:44,219 INFO L451 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-07-25 13:25:44,220 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-07-25 13:25:44,220 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3480, Invalid=10092, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 13:25:44,221 INFO L87 Difference]: Start difference. First operand 235 states and 236 transitions. Second operand 117 states. [2018-07-25 13:25:44,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:44,657 INFO L93 Difference]: Finished difference Result 355 states and 357 transitions. [2018-07-25 13:25:44,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-07-25 13:25:44,657 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 234 [2018-07-25 13:25:44,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:44,658 INFO L225 Difference]: With dead ends: 355 [2018-07-25 13:25:44,658 INFO L226 Difference]: Without dead ends: 237 [2018-07-25 13:25:44,660 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4789 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8496, Invalid=21606, Unknown=0, NotChecked=0, Total=30102 [2018-07-25 13:25:44,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-07-25 13:25:44,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2018-07-25 13:25:44,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-07-25 13:25:44,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 238 transitions. [2018-07-25 13:25:44,683 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 238 transitions. Word has length 234 [2018-07-25 13:25:44,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:44,683 INFO L472 AbstractCegarLoop]: Abstraction has 237 states and 238 transitions. [2018-07-25 13:25:44,683 INFO L473 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-07-25 13:25:44,683 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 238 transitions. [2018-07-25 13:25:44,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-07-25 13:25:44,685 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:44,685 INFO L354 BasicCegarLoop]: trace histogram [59, 58, 58, 57, 1, 1, 1, 1] [2018-07-25 13:25:44,685 INFO L415 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:44,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1499376757, now seen corresponding path program 87 times [2018-07-25 13:25:44,685 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:44,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:44,922 INFO L134 CoverageAnalysis]: Checked inductivity of 6728 backedges. 3422 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:44,922 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:44,923 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-07-25 13:25:44,923 INFO L451 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-07-25 13:25:44,923 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-07-25 13:25:44,923 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 13:25:44,924 INFO L87 Difference]: Start difference. First operand 237 states and 238 transitions. Second operand 63 states. [2018-07-25 13:25:45,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:45,081 INFO L93 Difference]: Finished difference Result 243 states and 245 transitions. [2018-07-25 13:25:45,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-07-25 13:25:45,081 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 236 [2018-07-25 13:25:45,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:45,082 INFO L225 Difference]: With dead ends: 243 [2018-07-25 13:25:45,082 INFO L226 Difference]: Without dead ends: 241 [2018-07-25 13:25:45,083 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3481 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5552, Invalid=9210, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 13:25:45,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-07-25 13:25:45,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2018-07-25 13:25:45,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-07-25 13:25:45,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 242 transitions. [2018-07-25 13:25:45,106 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 242 transitions. Word has length 236 [2018-07-25 13:25:45,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:45,106 INFO L472 AbstractCegarLoop]: Abstraction has 241 states and 242 transitions. [2018-07-25 13:25:45,107 INFO L473 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-07-25 13:25:45,107 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 242 transitions. [2018-07-25 13:25:45,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-07-25 13:25:45,108 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:45,108 INFO L354 BasicCegarLoop]: trace histogram [60, 59, 59, 58, 1, 1, 1, 1] [2018-07-25 13:25:45,108 INFO L415 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:45,109 INFO L82 PathProgramCache]: Analyzing trace with hash 174520447, now seen corresponding path program 88 times [2018-07-25 13:25:45,109 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:45,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:45,565 INFO L134 CoverageAnalysis]: Checked inductivity of 6962 backedges. 3540 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:45,565 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:45,565 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119] total 119 [2018-07-25 13:25:45,566 INFO L451 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-07-25 13:25:45,566 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-07-25 13:25:45,567 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3659, Invalid=10621, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 13:25:45,567 INFO L87 Difference]: Start difference. First operand 241 states and 242 transitions. Second operand 120 states. [2018-07-25 13:25:46,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:46,003 INFO L93 Difference]: Finished difference Result 365 states and 367 transitions. [2018-07-25 13:25:46,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-07-25 13:25:46,003 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 240 [2018-07-25 13:25:46,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:46,004 INFO L225 Difference]: With dead ends: 365 [2018-07-25 13:25:46,005 INFO L226 Difference]: Without dead ends: 243 [2018-07-25 13:25:46,006 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5075 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8850, Invalid=22656, Unknown=0, NotChecked=0, Total=31506 [2018-07-25 13:25:46,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-07-25 13:25:46,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2018-07-25 13:25:46,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-07-25 13:25:46,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 244 transitions. [2018-07-25 13:25:46,028 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 244 transitions. Word has length 240 [2018-07-25 13:25:46,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:46,028 INFO L472 AbstractCegarLoop]: Abstraction has 243 states and 244 transitions. [2018-07-25 13:25:46,028 INFO L473 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-07-25 13:25:46,028 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 244 transitions. [2018-07-25 13:25:46,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-07-25 13:25:46,029 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:46,029 INFO L354 BasicCegarLoop]: trace histogram [60, 60, 59, 59, 1, 1, 1, 1] [2018-07-25 13:25:46,029 INFO L415 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:46,030 INFO L82 PathProgramCache]: Analyzing trace with hash -277226629, now seen corresponding path program 89 times [2018-07-25 13:25:46,030 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:46,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:46,453 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 3540 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:46,453 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:46,453 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120] total 120 [2018-07-25 13:25:46,453 INFO L451 AbstractCegarLoop]: Interpolant automaton has 121 states [2018-07-25 13:25:46,454 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2018-07-25 13:25:46,455 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3720, Invalid=10800, Unknown=0, NotChecked=0, Total=14520 [2018-07-25 13:25:46,455 INFO L87 Difference]: Start difference. First operand 243 states and 244 transitions. Second operand 121 states. [2018-07-25 13:25:46,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:46,926 INFO L93 Difference]: Finished difference Result 367 states and 369 transitions. [2018-07-25 13:25:46,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-07-25 13:25:46,927 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 242 [2018-07-25 13:25:46,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:46,928 INFO L225 Difference]: With dead ends: 367 [2018-07-25 13:25:46,928 INFO L226 Difference]: Without dead ends: 245 [2018-07-25 13:25:46,930 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5134 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9089, Invalid=23131, Unknown=0, NotChecked=0, Total=32220 [2018-07-25 13:25:46,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-07-25 13:25:46,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2018-07-25 13:25:46,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-07-25 13:25:46,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 246 transitions. [2018-07-25 13:25:46,954 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 246 transitions. Word has length 242 [2018-07-25 13:25:46,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:46,955 INFO L472 AbstractCegarLoop]: Abstraction has 245 states and 246 transitions. [2018-07-25 13:25:46,955 INFO L473 AbstractCegarLoop]: Interpolant automaton has 121 states. [2018-07-25 13:25:46,955 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 246 transitions. [2018-07-25 13:25:46,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-07-25 13:25:46,956 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:46,956 INFO L354 BasicCegarLoop]: trace histogram [61, 60, 60, 59, 1, 1, 1, 1] [2018-07-25 13:25:46,957 INFO L415 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:46,957 INFO L82 PathProgramCache]: Analyzing trace with hash -614469769, now seen corresponding path program 90 times [2018-07-25 13:25:46,957 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:47,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:47,324 INFO L134 CoverageAnalysis]: Checked inductivity of 7200 backedges. 3660 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:47,324 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:47,324 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-07-25 13:25:47,325 INFO L451 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-07-25 13:25:47,325 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-07-25 13:25:47,326 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2018, Invalid=2142, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 13:25:47,326 INFO L87 Difference]: Start difference. First operand 245 states and 246 transitions. Second operand 65 states. [2018-07-25 13:25:47,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:47,583 INFO L93 Difference]: Finished difference Result 251 states and 253 transitions. [2018-07-25 13:25:47,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-07-25 13:25:47,583 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 244 [2018-07-25 13:25:47,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:47,584 INFO L225 Difference]: With dead ends: 251 [2018-07-25 13:25:47,584 INFO L226 Difference]: Without dead ends: 249 [2018-07-25 13:25:47,585 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3721 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5923, Invalid=9827, Unknown=0, NotChecked=0, Total=15750 [2018-07-25 13:25:47,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2018-07-25 13:25:47,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2018-07-25 13:25:47,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-07-25 13:25:47,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 250 transitions. [2018-07-25 13:25:47,654 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 250 transitions. Word has length 244 [2018-07-25 13:25:47,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:47,654 INFO L472 AbstractCegarLoop]: Abstraction has 249 states and 250 transitions. [2018-07-25 13:25:47,654 INFO L473 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-07-25 13:25:47,654 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 250 transitions. [2018-07-25 13:25:47,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-07-25 13:25:47,655 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:47,656 INFO L354 BasicCegarLoop]: trace histogram [62, 61, 61, 60, 1, 1, 1, 1] [2018-07-25 13:25:47,656 INFO L415 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:47,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1163771499, now seen corresponding path program 91 times [2018-07-25 13:25:47,656 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:47,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:48,088 INFO L134 CoverageAnalysis]: Checked inductivity of 7442 backedges. 3782 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:48,088 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:48,088 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123] total 123 [2018-07-25 13:25:48,089 INFO L451 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-07-25 13:25:48,090 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-07-25 13:25:48,091 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3905, Invalid=11347, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 13:25:48,091 INFO L87 Difference]: Start difference. First operand 249 states and 250 transitions. Second operand 124 states. [2018-07-25 13:25:48,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:48,610 INFO L93 Difference]: Finished difference Result 377 states and 379 transitions. [2018-07-25 13:25:48,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-07-25 13:25:48,611 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 248 [2018-07-25 13:25:48,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:48,612 INFO L225 Difference]: With dead ends: 377 [2018-07-25 13:25:48,612 INFO L226 Difference]: Without dead ends: 251 [2018-07-25 13:25:48,615 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5430 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9455, Invalid=24217, Unknown=0, NotChecked=0, Total=33672 [2018-07-25 13:25:48,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-07-25 13:25:48,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2018-07-25 13:25:48,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-07-25 13:25:48,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 252 transitions. [2018-07-25 13:25:48,630 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 252 transitions. Word has length 248 [2018-07-25 13:25:48,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:48,630 INFO L472 AbstractCegarLoop]: Abstraction has 251 states and 252 transitions. [2018-07-25 13:25:48,630 INFO L473 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-07-25 13:25:48,630 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 252 transitions. [2018-07-25 13:25:48,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-07-25 13:25:48,631 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:48,632 INFO L354 BasicCegarLoop]: trace histogram [62, 62, 61, 61, 1, 1, 1, 1] [2018-07-25 13:25:48,632 INFO L415 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:48,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1439425895, now seen corresponding path program 92 times [2018-07-25 13:25:48,632 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:48,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:49,083 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 3782 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:49,083 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:49,083 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [124] total 124 [2018-07-25 13:25:49,084 INFO L451 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-07-25 13:25:49,084 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-07-25 13:25:49,085 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3968, Invalid=11532, Unknown=0, NotChecked=0, Total=15500 [2018-07-25 13:25:49,085 INFO L87 Difference]: Start difference. First operand 251 states and 252 transitions. Second operand 125 states. [2018-07-25 13:25:49,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:49,477 INFO L93 Difference]: Finished difference Result 379 states and 381 transitions. [2018-07-25 13:25:49,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-07-25 13:25:49,477 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 250 [2018-07-25 13:25:49,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:49,478 INFO L225 Difference]: With dead ends: 379 [2018-07-25 13:25:49,478 INFO L226 Difference]: Without dead ends: 253 [2018-07-25 13:25:49,481 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5491 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9702, Invalid=24708, Unknown=0, NotChecked=0, Total=34410 [2018-07-25 13:25:49,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-07-25 13:25:49,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2018-07-25 13:25:49,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-07-25 13:25:49,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 254 transitions. [2018-07-25 13:25:49,503 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 254 transitions. Word has length 250 [2018-07-25 13:25:49,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:49,503 INFO L472 AbstractCegarLoop]: Abstraction has 253 states and 254 transitions. [2018-07-25 13:25:49,503 INFO L473 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-07-25 13:25:49,503 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 254 transitions. [2018-07-25 13:25:49,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-07-25 13:25:49,504 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:49,504 INFO L354 BasicCegarLoop]: trace histogram [63, 62, 62, 61, 1, 1, 1, 1] [2018-07-25 13:25:49,504 INFO L415 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:49,504 INFO L82 PathProgramCache]: Analyzing trace with hash 55328099, now seen corresponding path program 93 times [2018-07-25 13:25:49,504 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:49,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:49,770 INFO L134 CoverageAnalysis]: Checked inductivity of 7688 backedges. 3906 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:49,771 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:49,771 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-07-25 13:25:49,771 INFO L451 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-07-25 13:25:49,772 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-07-25 13:25:49,772 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 13:25:49,772 INFO L87 Difference]: Start difference. First operand 253 states and 254 transitions. Second operand 67 states. [2018-07-25 13:25:49,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:49,974 INFO L93 Difference]: Finished difference Result 259 states and 261 transitions. [2018-07-25 13:25:49,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-07-25 13:25:49,974 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 252 [2018-07-25 13:25:49,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:49,975 INFO L225 Difference]: With dead ends: 259 [2018-07-25 13:25:49,975 INFO L226 Difference]: Without dead ends: 257 [2018-07-25 13:25:49,977 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3969 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6306, Invalid=10464, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 13:25:49,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2018-07-25 13:25:49,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2018-07-25 13:25:49,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2018-07-25 13:25:49,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 258 transitions. [2018-07-25 13:25:49,992 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 258 transitions. Word has length 252 [2018-07-25 13:25:49,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:49,992 INFO L472 AbstractCegarLoop]: Abstraction has 257 states and 258 transitions. [2018-07-25 13:25:49,992 INFO L473 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-07-25 13:25:49,993 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 258 transitions. [2018-07-25 13:25:49,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-07-25 13:25:49,993 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:49,994 INFO L354 BasicCegarLoop]: trace histogram [64, 63, 63, 62, 1, 1, 1, 1] [2018-07-25 13:25:49,994 INFO L415 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:49,994 INFO L82 PathProgramCache]: Analyzing trace with hash -514247081, now seen corresponding path program 94 times [2018-07-25 13:25:49,994 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:50,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:50,514 INFO L134 CoverageAnalysis]: Checked inductivity of 7938 backedges. 4032 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:50,514 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:50,515 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127] total 127 [2018-07-25 13:25:50,515 INFO L451 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-07-25 13:25:50,516 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-07-25 13:25:50,516 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4159, Invalid=12097, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 13:25:50,517 INFO L87 Difference]: Start difference. First operand 257 states and 258 transitions. Second operand 128 states. [2018-07-25 13:25:50,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:50,951 INFO L93 Difference]: Finished difference Result 389 states and 391 transitions. [2018-07-25 13:25:50,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-07-25 13:25:50,951 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 256 [2018-07-25 13:25:50,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:50,953 INFO L225 Difference]: With dead ends: 389 [2018-07-25 13:25:50,953 INFO L226 Difference]: Without dead ends: 259 [2018-07-25 13:25:50,955 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5797 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10080, Invalid=25830, Unknown=0, NotChecked=0, Total=35910 [2018-07-25 13:25:50,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-07-25 13:25:50,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2018-07-25 13:25:50,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-07-25 13:25:50,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 260 transitions. [2018-07-25 13:25:50,973 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 260 transitions. Word has length 256 [2018-07-25 13:25:50,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:50,973 INFO L472 AbstractCegarLoop]: Abstraction has 259 states and 260 transitions. [2018-07-25 13:25:50,973 INFO L473 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-07-25 13:25:50,974 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 260 transitions. [2018-07-25 13:25:50,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-07-25 13:25:50,975 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:50,975 INFO L354 BasicCegarLoop]: trace histogram [64, 64, 63, 63, 1, 1, 1, 1] [2018-07-25 13:25:50,975 INFO L415 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:50,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1080123053, now seen corresponding path program 95 times [2018-07-25 13:25:50,976 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:51,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:51,547 INFO L134 CoverageAnalysis]: Checked inductivity of 8064 backedges. 4032 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:51,547 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:51,547 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [128] total 128 [2018-07-25 13:25:51,548 INFO L451 AbstractCegarLoop]: Interpolant automaton has 129 states [2018-07-25 13:25:51,549 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2018-07-25 13:25:51,550 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4224, Invalid=12288, Unknown=0, NotChecked=0, Total=16512 [2018-07-25 13:25:51,551 INFO L87 Difference]: Start difference. First operand 259 states and 260 transitions. Second operand 129 states. [2018-07-25 13:25:52,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:52,246 INFO L93 Difference]: Finished difference Result 391 states and 393 transitions. [2018-07-25 13:25:52,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-07-25 13:25:52,247 INFO L78 Accepts]: Start accepts. Automaton has 129 states. Word has length 258 [2018-07-25 13:25:52,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:52,248 INFO L225 Difference]: With dead ends: 391 [2018-07-25 13:25:52,248 INFO L226 Difference]: Without dead ends: 261 [2018-07-25 13:25:52,250 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5860 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=10335, Invalid=26337, Unknown=0, NotChecked=0, Total=36672 [2018-07-25 13:25:52,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2018-07-25 13:25:52,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2018-07-25 13:25:52,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2018-07-25 13:25:52,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 262 transitions. [2018-07-25 13:25:52,270 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 262 transitions. Word has length 258 [2018-07-25 13:25:52,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:52,271 INFO L472 AbstractCegarLoop]: Abstraction has 261 states and 262 transitions. [2018-07-25 13:25:52,271 INFO L473 AbstractCegarLoop]: Interpolant automaton has 129 states. [2018-07-25 13:25:52,271 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 262 transitions. [2018-07-25 13:25:52,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-07-25 13:25:52,272 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:52,272 INFO L354 BasicCegarLoop]: trace histogram [65, 64, 64, 63, 1, 1, 1, 1] [2018-07-25 13:25:52,272 INFO L415 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:52,272 INFO L82 PathProgramCache]: Analyzing trace with hash 573914447, now seen corresponding path program 96 times [2018-07-25 13:25:52,272 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:52,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:52,560 INFO L134 CoverageAnalysis]: Checked inductivity of 8192 backedges. 4160 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:52,560 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:52,560 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-07-25 13:25:52,561 INFO L451 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-07-25 13:25:52,561 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-07-25 13:25:52,562 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2280, Invalid=2412, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 13:25:52,562 INFO L87 Difference]: Start difference. First operand 261 states and 262 transitions. Second operand 69 states. [2018-07-25 13:25:52,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:52,848 INFO L93 Difference]: Finished difference Result 267 states and 269 transitions. [2018-07-25 13:25:52,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-07-25 13:25:52,848 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 260 [2018-07-25 13:25:52,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:52,849 INFO L225 Difference]: With dead ends: 267 [2018-07-25 13:25:52,849 INFO L226 Difference]: Without dead ends: 265 [2018-07-25 13:25:52,851 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4225 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6701, Invalid=11121, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 13:25:52,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2018-07-25 13:25:52,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2018-07-25 13:25:52,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2018-07-25 13:25:52,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 266 transitions. [2018-07-25 13:25:52,871 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 266 transitions. Word has length 260 [2018-07-25 13:25:52,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:52,871 INFO L472 AbstractCegarLoop]: Abstraction has 265 states and 266 transitions. [2018-07-25 13:25:52,871 INFO L473 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-07-25 13:25:52,871 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 266 transitions. [2018-07-25 13:25:52,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-07-25 13:25:52,872 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:52,872 INFO L354 BasicCegarLoop]: trace histogram [66, 65, 65, 64, 1, 1, 1, 1] [2018-07-25 13:25:52,872 INFO L415 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:52,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1655201859, now seen corresponding path program 97 times [2018-07-25 13:25:52,872 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:52,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:53,377 INFO L134 CoverageAnalysis]: Checked inductivity of 8450 backedges. 4290 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:53,377 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:53,377 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131] total 131 [2018-07-25 13:25:53,378 INFO L451 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-07-25 13:25:53,378 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-07-25 13:25:53,379 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4421, Invalid=12871, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 13:25:53,379 INFO L87 Difference]: Start difference. First operand 265 states and 266 transitions. Second operand 132 states. [2018-07-25 13:25:53,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:53,873 INFO L93 Difference]: Finished difference Result 401 states and 403 transitions. [2018-07-25 13:25:53,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-07-25 13:25:53,873 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 264 [2018-07-25 13:25:53,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:53,874 INFO L225 Difference]: With dead ends: 401 [2018-07-25 13:25:53,874 INFO L226 Difference]: Without dead ends: 267 [2018-07-25 13:25:53,877 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6176 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=10725, Invalid=27495, Unknown=0, NotChecked=0, Total=38220 [2018-07-25 13:25:53,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-07-25 13:25:53,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2018-07-25 13:25:53,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2018-07-25 13:25:53,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 268 transitions. [2018-07-25 13:25:53,904 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 268 transitions. Word has length 264 [2018-07-25 13:25:53,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:53,904 INFO L472 AbstractCegarLoop]: Abstraction has 267 states and 268 transitions. [2018-07-25 13:25:53,904 INFO L473 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-07-25 13:25:53,904 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 268 transitions. [2018-07-25 13:25:53,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-07-25 13:25:53,906 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:53,906 INFO L354 BasicCegarLoop]: trace histogram [66, 66, 65, 65, 1, 1, 1, 1] [2018-07-25 13:25:53,906 INFO L415 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:53,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1967198015, now seen corresponding path program 98 times [2018-07-25 13:25:53,906 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:54,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:54,697 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 4290 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:54,697 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:54,698 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [132] total 132 [2018-07-25 13:25:54,698 INFO L451 AbstractCegarLoop]: Interpolant automaton has 133 states [2018-07-25 13:25:54,698 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2018-07-25 13:25:54,699 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4488, Invalid=13068, Unknown=0, NotChecked=0, Total=17556 [2018-07-25 13:25:54,699 INFO L87 Difference]: Start difference. First operand 267 states and 268 transitions. Second operand 133 states. [2018-07-25 13:25:55,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:55,117 INFO L93 Difference]: Finished difference Result 403 states and 405 transitions. [2018-07-25 13:25:55,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-07-25 13:25:55,117 INFO L78 Accepts]: Start accepts. Automaton has 133 states. Word has length 266 [2018-07-25 13:25:55,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:55,119 INFO L225 Difference]: With dead ends: 403 [2018-07-25 13:25:55,119 INFO L226 Difference]: Without dead ends: 269 [2018-07-25 13:25:55,121 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6241 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=10988, Invalid=28018, Unknown=0, NotChecked=0, Total=39006 [2018-07-25 13:25:55,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2018-07-25 13:25:55,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2018-07-25 13:25:55,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2018-07-25 13:25:55,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 270 transitions. [2018-07-25 13:25:55,137 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 270 transitions. Word has length 266 [2018-07-25 13:25:55,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:55,137 INFO L472 AbstractCegarLoop]: Abstraction has 269 states and 270 transitions. [2018-07-25 13:25:55,137 INFO L473 AbstractCegarLoop]: Interpolant automaton has 133 states. [2018-07-25 13:25:55,137 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 270 transitions. [2018-07-25 13:25:55,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-07-25 13:25:55,139 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:55,139 INFO L354 BasicCegarLoop]: trace histogram [67, 66, 66, 65, 1, 1, 1, 1] [2018-07-25 13:25:55,139 INFO L415 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:55,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1147793211, now seen corresponding path program 99 times [2018-07-25 13:25:55,139 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:55,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:55,555 INFO L134 CoverageAnalysis]: Checked inductivity of 8712 backedges. 4422 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:55,556 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:55,556 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-07-25 13:25:55,556 INFO L451 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-07-25 13:25:55,557 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-07-25 13:25:55,557 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 13:25:55,557 INFO L87 Difference]: Start difference. First operand 269 states and 270 transitions. Second operand 71 states. [2018-07-25 13:25:55,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:55,776 INFO L93 Difference]: Finished difference Result 275 states and 277 transitions. [2018-07-25 13:25:55,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-07-25 13:25:55,776 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 268 [2018-07-25 13:25:55,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:55,778 INFO L225 Difference]: With dead ends: 275 [2018-07-25 13:25:55,778 INFO L226 Difference]: Without dead ends: 273 [2018-07-25 13:25:55,779 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4489 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7108, Invalid=11798, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 13:25:55,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2018-07-25 13:25:55,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2018-07-25 13:25:55,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2018-07-25 13:25:55,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 274 transitions. [2018-07-25 13:25:55,806 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 274 transitions. Word has length 268 [2018-07-25 13:25:55,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:55,806 INFO L472 AbstractCegarLoop]: Abstraction has 273 states and 274 transitions. [2018-07-25 13:25:55,807 INFO L473 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-07-25 13:25:55,807 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 274 transitions. [2018-07-25 13:25:55,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-07-25 13:25:55,808 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:55,808 INFO L354 BasicCegarLoop]: trace histogram [68, 67, 67, 66, 1, 1, 1, 1] [2018-07-25 13:25:55,808 INFO L415 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:55,809 INFO L82 PathProgramCache]: Analyzing trace with hash 370818095, now seen corresponding path program 100 times [2018-07-25 13:25:55,809 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:55,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:56,494 INFO L134 CoverageAnalysis]: Checked inductivity of 8978 backedges. 4556 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:56,495 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:56,495 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [135] total 135 [2018-07-25 13:25:56,495 INFO L451 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-07-25 13:25:56,496 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-07-25 13:25:56,497 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4691, Invalid=13669, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 13:25:56,498 INFO L87 Difference]: Start difference. First operand 273 states and 274 transitions. Second operand 136 states. [2018-07-25 13:25:57,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:57,007 INFO L93 Difference]: Finished difference Result 413 states and 415 transitions. [2018-07-25 13:25:57,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2018-07-25 13:25:57,007 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 272 [2018-07-25 13:25:57,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:57,009 INFO L225 Difference]: With dead ends: 413 [2018-07-25 13:25:57,009 INFO L226 Difference]: Without dead ends: 275 [2018-07-25 13:25:57,013 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6567 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11390, Invalid=29212, Unknown=0, NotChecked=0, Total=40602 [2018-07-25 13:25:57,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2018-07-25 13:25:57,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2018-07-25 13:25:57,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2018-07-25 13:25:57,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 276 transitions. [2018-07-25 13:25:57,038 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 276 transitions. Word has length 272 [2018-07-25 13:25:57,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:57,038 INFO L472 AbstractCegarLoop]: Abstraction has 275 states and 276 transitions. [2018-07-25 13:25:57,038 INFO L473 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-07-25 13:25:57,038 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 276 transitions. [2018-07-25 13:25:57,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-07-25 13:25:57,039 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:57,039 INFO L354 BasicCegarLoop]: trace histogram [68, 68, 67, 67, 1, 1, 1, 1] [2018-07-25 13:25:57,040 INFO L415 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:57,040 INFO L82 PathProgramCache]: Analyzing trace with hash -2021511381, now seen corresponding path program 101 times [2018-07-25 13:25:57,040 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:57,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:57,635 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 4556 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:57,635 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:57,636 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [136] total 136 [2018-07-25 13:25:57,636 INFO L451 AbstractCegarLoop]: Interpolant automaton has 137 states [2018-07-25 13:25:57,637 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2018-07-25 13:25:57,638 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4760, Invalid=13872, Unknown=0, NotChecked=0, Total=18632 [2018-07-25 13:25:57,638 INFO L87 Difference]: Start difference. First operand 275 states and 276 transitions. Second operand 137 states. [2018-07-25 13:25:58,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:58,236 INFO L93 Difference]: Finished difference Result 415 states and 417 transitions. [2018-07-25 13:25:58,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-07-25 13:25:58,236 INFO L78 Accepts]: Start accepts. Automaton has 137 states. Word has length 274 [2018-07-25 13:25:58,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:58,237 INFO L225 Difference]: With dead ends: 415 [2018-07-25 13:25:58,237 INFO L226 Difference]: Without dead ends: 277 [2018-07-25 13:25:58,240 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6634 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11661, Invalid=29751, Unknown=0, NotChecked=0, Total=41412 [2018-07-25 13:25:58,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2018-07-25 13:25:58,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2018-07-25 13:25:58,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2018-07-25 13:25:58,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 278 transitions. [2018-07-25 13:25:58,265 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 278 transitions. Word has length 274 [2018-07-25 13:25:58,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:58,266 INFO L472 AbstractCegarLoop]: Abstraction has 277 states and 278 transitions. [2018-07-25 13:25:58,266 INFO L473 AbstractCegarLoop]: Interpolant automaton has 137 states. [2018-07-25 13:25:58,266 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 278 transitions. [2018-07-25 13:25:58,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-07-25 13:25:58,267 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:58,267 INFO L354 BasicCegarLoop]: trace histogram [69, 68, 68, 67, 1, 1, 1, 1] [2018-07-25 13:25:58,268 INFO L415 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:58,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1052332839, now seen corresponding path program 102 times [2018-07-25 13:25:58,268 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:58,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:58,687 INFO L134 CoverageAnalysis]: Checked inductivity of 9248 backedges. 4692 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:58,687 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:58,687 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-07-25 13:25:58,688 INFO L451 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-07-25 13:25:58,688 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-07-25 13:25:58,689 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2558, Invalid=2698, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 13:25:58,689 INFO L87 Difference]: Start difference. First operand 277 states and 278 transitions. Second operand 73 states. [2018-07-25 13:25:58,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:58,944 INFO L93 Difference]: Finished difference Result 283 states and 285 transitions. [2018-07-25 13:25:58,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2018-07-25 13:25:58,944 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 276 [2018-07-25 13:25:58,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:58,945 INFO L225 Difference]: With dead ends: 283 [2018-07-25 13:25:58,945 INFO L226 Difference]: Without dead ends: 281 [2018-07-25 13:25:58,946 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4761 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7527, Invalid=12495, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 13:25:58,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2018-07-25 13:25:58,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2018-07-25 13:25:58,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2018-07-25 13:25:58,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 282 transitions. [2018-07-25 13:25:58,966 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 282 transitions. Word has length 276 [2018-07-25 13:25:58,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:58,966 INFO L472 AbstractCegarLoop]: Abstraction has 281 states and 282 transitions. [2018-07-25 13:25:58,966 INFO L473 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-07-25 13:25:58,966 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 282 transitions. [2018-07-25 13:25:58,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2018-07-25 13:25:58,968 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:58,968 INFO L354 BasicCegarLoop]: trace histogram [70, 69, 69, 68, 1, 1, 1, 1] [2018-07-25 13:25:58,968 INFO L415 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:58,968 INFO L82 PathProgramCache]: Analyzing trace with hash -788674021, now seen corresponding path program 103 times [2018-07-25 13:25:58,968 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:59,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:59,597 INFO L134 CoverageAnalysis]: Checked inductivity of 9522 backedges. 4830 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:59,597 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:59,597 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [139] total 139 [2018-07-25 13:25:59,598 INFO L451 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-07-25 13:25:59,599 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-07-25 13:25:59,601 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4969, Invalid=14491, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 13:25:59,601 INFO L87 Difference]: Start difference. First operand 281 states and 282 transitions. Second operand 140 states. [2018-07-25 13:26:00,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:00,189 INFO L93 Difference]: Finished difference Result 425 states and 427 transitions. [2018-07-25 13:26:00,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-07-25 13:26:00,189 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 280 [2018-07-25 13:26:00,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:00,190 INFO L225 Difference]: With dead ends: 425 [2018-07-25 13:26:00,190 INFO L226 Difference]: Without dead ends: 283 [2018-07-25 13:26:00,193 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6970 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=12075, Invalid=30981, Unknown=0, NotChecked=0, Total=43056 [2018-07-25 13:26:00,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-07-25 13:26:00,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2018-07-25 13:26:00,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2018-07-25 13:26:00,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 284 transitions. [2018-07-25 13:26:00,221 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 284 transitions. Word has length 280 [2018-07-25 13:26:00,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:00,221 INFO L472 AbstractCegarLoop]: Abstraction has 283 states and 284 transitions. [2018-07-25 13:26:00,221 INFO L473 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-07-25 13:26:00,221 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 284 transitions. [2018-07-25 13:26:00,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-07-25 13:26:00,222 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:00,223 INFO L354 BasicCegarLoop]: trace histogram [70, 70, 69, 69, 1, 1, 1, 1] [2018-07-25 13:26:00,223 INFO L415 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:00,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1884225257, now seen corresponding path program 104 times [2018-07-25 13:26:00,223 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:00,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:00,845 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 4830 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:00,845 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:00,845 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [140] total 140 [2018-07-25 13:26:00,846 INFO L451 AbstractCegarLoop]: Interpolant automaton has 141 states [2018-07-25 13:26:00,846 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2018-07-25 13:26:00,847 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5040, Invalid=14700, Unknown=0, NotChecked=0, Total=19740 [2018-07-25 13:26:00,848 INFO L87 Difference]: Start difference. First operand 283 states and 284 transitions. Second operand 141 states. [2018-07-25 13:26:01,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:01,510 INFO L93 Difference]: Finished difference Result 427 states and 429 transitions. [2018-07-25 13:26:01,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2018-07-25 13:26:01,510 INFO L78 Accepts]: Start accepts. Automaton has 141 states. Word has length 282 [2018-07-25 13:26:01,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:01,510 INFO L225 Difference]: With dead ends: 427 [2018-07-25 13:26:01,511 INFO L226 Difference]: Without dead ends: 285 [2018-07-25 13:26:01,514 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7039 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=12354, Invalid=31536, Unknown=0, NotChecked=0, Total=43890 [2018-07-25 13:26:01,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2018-07-25 13:26:01,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2018-07-25 13:26:01,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2018-07-25 13:26:01,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 286 transitions. [2018-07-25 13:26:01,544 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 286 transitions. Word has length 282 [2018-07-25 13:26:01,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:01,544 INFO L472 AbstractCegarLoop]: Abstraction has 285 states and 286 transitions. [2018-07-25 13:26:01,544 INFO L473 AbstractCegarLoop]: Interpolant automaton has 141 states. [2018-07-25 13:26:01,544 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 286 transitions. [2018-07-25 13:26:01,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-07-25 13:26:01,545 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:01,546 INFO L354 BasicCegarLoop]: trace histogram [71, 70, 70, 69, 1, 1, 1, 1] [2018-07-25 13:26:01,546 INFO L415 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:01,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1852991763, now seen corresponding path program 105 times [2018-07-25 13:26:01,546 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:01,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:02,001 INFO L134 CoverageAnalysis]: Checked inductivity of 9800 backedges. 4970 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:02,002 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:02,002 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2018-07-25 13:26:02,002 INFO L451 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-07-25 13:26:02,002 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-07-25 13:26:02,003 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 13:26:02,003 INFO L87 Difference]: Start difference. First operand 285 states and 286 transitions. Second operand 75 states. [2018-07-25 13:26:02,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:02,211 INFO L93 Difference]: Finished difference Result 291 states and 293 transitions. [2018-07-25 13:26:02,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2018-07-25 13:26:02,211 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 284 [2018-07-25 13:26:02,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:02,212 INFO L225 Difference]: With dead ends: 291 [2018-07-25 13:26:02,212 INFO L226 Difference]: Without dead ends: 289 [2018-07-25 13:26:02,213 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5041 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7958, Invalid=13212, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 13:26:02,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2018-07-25 13:26:02,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2018-07-25 13:26:02,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2018-07-25 13:26:02,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 290 transitions. [2018-07-25 13:26:02,241 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 290 transitions. Word has length 284 [2018-07-25 13:26:02,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:02,241 INFO L472 AbstractCegarLoop]: Abstraction has 289 states and 290 transitions. [2018-07-25 13:26:02,241 INFO L473 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-07-25 13:26:02,241 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 290 transitions. [2018-07-25 13:26:02,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-07-25 13:26:02,243 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:02,243 INFO L354 BasicCegarLoop]: trace histogram [72, 71, 71, 70, 1, 1, 1, 1] [2018-07-25 13:26:02,243 INFO L415 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:02,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1323169273, now seen corresponding path program 106 times [2018-07-25 13:26:02,243 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:02,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:02,890 INFO L134 CoverageAnalysis]: Checked inductivity of 10082 backedges. 5112 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:02,890 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:02,890 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [143] total 143 [2018-07-25 13:26:02,890 INFO L451 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-07-25 13:26:02,891 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-07-25 13:26:02,892 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5255, Invalid=15337, Unknown=0, NotChecked=0, Total=20592 [2018-07-25 13:26:02,892 INFO L87 Difference]: Start difference. First operand 289 states and 290 transitions. Second operand 144 states. [2018-07-25 13:26:03,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:03,552 INFO L93 Difference]: Finished difference Result 437 states and 439 transitions. [2018-07-25 13:26:03,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2018-07-25 13:26:03,552 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 288 [2018-07-25 13:26:03,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:03,553 INFO L225 Difference]: With dead ends: 437 [2018-07-25 13:26:03,553 INFO L226 Difference]: Without dead ends: 291 [2018-07-25 13:26:03,556 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7385 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=12780, Invalid=32802, Unknown=0, NotChecked=0, Total=45582 [2018-07-25 13:26:03,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2018-07-25 13:26:03,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2018-07-25 13:26:03,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2018-07-25 13:26:03,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 292 transitions. [2018-07-25 13:26:03,582 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 292 transitions. Word has length 288 [2018-07-25 13:26:03,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:03,583 INFO L472 AbstractCegarLoop]: Abstraction has 291 states and 292 transitions. [2018-07-25 13:26:03,583 INFO L473 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-07-25 13:26:03,583 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 292 transitions. [2018-07-25 13:26:03,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-07-25 13:26:03,584 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:03,584 INFO L354 BasicCegarLoop]: trace histogram [72, 72, 71, 71, 1, 1, 1, 1] [2018-07-25 13:26:03,584 INFO L415 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:03,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1872528643, now seen corresponding path program 107 times [2018-07-25 13:26:03,584 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:03,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:04,244 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 5112 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:04,244 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:04,244 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [144] total 144 [2018-07-25 13:26:04,245 INFO L451 AbstractCegarLoop]: Interpolant automaton has 145 states [2018-07-25 13:26:04,245 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2018-07-25 13:26:04,246 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5328, Invalid=15552, Unknown=0, NotChecked=0, Total=20880 [2018-07-25 13:26:04,246 INFO L87 Difference]: Start difference. First operand 291 states and 292 transitions. Second operand 145 states. [2018-07-25 13:26:04,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:04,849 INFO L93 Difference]: Finished difference Result 439 states and 441 transitions. [2018-07-25 13:26:04,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2018-07-25 13:26:04,849 INFO L78 Accepts]: Start accepts. Automaton has 145 states. Word has length 290 [2018-07-25 13:26:04,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:04,850 INFO L225 Difference]: With dead ends: 439 [2018-07-25 13:26:04,850 INFO L226 Difference]: Without dead ends: 293 [2018-07-25 13:26:04,853 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7456 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13067, Invalid=33373, Unknown=0, NotChecked=0, Total=46440 [2018-07-25 13:26:04,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-07-25 13:26:04,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2018-07-25 13:26:04,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-07-25 13:26:04,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 294 transitions. [2018-07-25 13:26:04,872 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 294 transitions. Word has length 290 [2018-07-25 13:26:04,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:04,872 INFO L472 AbstractCegarLoop]: Abstraction has 293 states and 294 transitions. [2018-07-25 13:26:04,872 INFO L473 AbstractCegarLoop]: Interpolant automaton has 145 states. [2018-07-25 13:26:04,872 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 294 transitions. [2018-07-25 13:26:04,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2018-07-25 13:26:04,873 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:04,873 INFO L354 BasicCegarLoop]: trace histogram [73, 72, 72, 71, 1, 1, 1, 1] [2018-07-25 13:26:04,873 INFO L415 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:04,873 INFO L82 PathProgramCache]: Analyzing trace with hash 2036609279, now seen corresponding path program 108 times [2018-07-25 13:26:04,873 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:05,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:05,283 INFO L134 CoverageAnalysis]: Checked inductivity of 10368 backedges. 5256 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:05,284 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:05,284 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-07-25 13:26:05,284 INFO L451 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-07-25 13:26:05,285 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-07-25 13:26:05,285 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2852, Invalid=3000, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 13:26:05,285 INFO L87 Difference]: Start difference. First operand 293 states and 294 transitions. Second operand 77 states. [2018-07-25 13:26:05,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:05,608 INFO L93 Difference]: Finished difference Result 299 states and 301 transitions. [2018-07-25 13:26:05,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2018-07-25 13:26:05,609 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 292 [2018-07-25 13:26:05,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:05,610 INFO L225 Difference]: With dead ends: 299 [2018-07-25 13:26:05,610 INFO L226 Difference]: Without dead ends: 297 [2018-07-25 13:26:05,612 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5329 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8401, Invalid=13949, Unknown=0, NotChecked=0, Total=22350 [2018-07-25 13:26:05,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2018-07-25 13:26:05,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2018-07-25 13:26:05,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2018-07-25 13:26:05,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 298 transitions. [2018-07-25 13:26:05,691 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 298 transitions. Word has length 292 [2018-07-25 13:26:05,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:05,691 INFO L472 AbstractCegarLoop]: Abstraction has 297 states and 298 transitions. [2018-07-25 13:26:05,691 INFO L473 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-07-25 13:26:05,691 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 298 transitions. [2018-07-25 13:26:05,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2018-07-25 13:26:05,692 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:05,693 INFO L354 BasicCegarLoop]: trace histogram [74, 73, 73, 72, 1, 1, 1, 1] [2018-07-25 13:26:05,693 INFO L415 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:05,693 INFO L82 PathProgramCache]: Analyzing trace with hash -589956109, now seen corresponding path program 109 times [2018-07-25 13:26:05,693 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:05,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:06,414 INFO L134 CoverageAnalysis]: Checked inductivity of 10658 backedges. 5402 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:06,414 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:06,415 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [147] total 147 [2018-07-25 13:26:06,415 INFO L451 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-07-25 13:26:06,416 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-07-25 13:26:06,417 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5549, Invalid=16207, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 13:26:06,417 INFO L87 Difference]: Start difference. First operand 297 states and 298 transitions. Second operand 148 states. [2018-07-25 13:26:07,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:07,102 INFO L93 Difference]: Finished difference Result 449 states and 451 transitions. [2018-07-25 13:26:07,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2018-07-25 13:26:07,102 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 296 [2018-07-25 13:26:07,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:07,103 INFO L225 Difference]: With dead ends: 449 [2018-07-25 13:26:07,103 INFO L226 Difference]: Without dead ends: 299 [2018-07-25 13:26:07,106 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7812 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13505, Invalid=34675, Unknown=0, NotChecked=0, Total=48180 [2018-07-25 13:26:07,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2018-07-25 13:26:07,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2018-07-25 13:26:07,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-07-25 13:26:07,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 300 transitions. [2018-07-25 13:26:07,127 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 300 transitions. Word has length 296 [2018-07-25 13:26:07,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:07,127 INFO L472 AbstractCegarLoop]: Abstraction has 299 states and 300 transitions. [2018-07-25 13:26:07,127 INFO L473 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-07-25 13:26:07,127 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 300 transitions. [2018-07-25 13:26:07,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-07-25 13:26:07,128 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:07,128 INFO L354 BasicCegarLoop]: trace histogram [74, 74, 73, 73, 1, 1, 1, 1] [2018-07-25 13:26:07,129 INFO L415 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:07,129 INFO L82 PathProgramCache]: Analyzing trace with hash 294894319, now seen corresponding path program 110 times [2018-07-25 13:26:07,129 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:07,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:07,850 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 5402 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:07,850 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:07,851 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [148] total 148 [2018-07-25 13:26:07,851 INFO L451 AbstractCegarLoop]: Interpolant automaton has 149 states [2018-07-25 13:26:07,852 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2018-07-25 13:26:07,854 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5624, Invalid=16428, Unknown=0, NotChecked=0, Total=22052 [2018-07-25 13:26:07,854 INFO L87 Difference]: Start difference. First operand 299 states and 300 transitions. Second operand 149 states. [2018-07-25 13:26:08,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:08,601 INFO L93 Difference]: Finished difference Result 451 states and 453 transitions. [2018-07-25 13:26:08,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2018-07-25 13:26:08,601 INFO L78 Accepts]: Start accepts. Automaton has 149 states. Word has length 298 [2018-07-25 13:26:08,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:08,602 INFO L225 Difference]: With dead ends: 451 [2018-07-25 13:26:08,602 INFO L226 Difference]: Without dead ends: 301 [2018-07-25 13:26:08,605 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7885 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13800, Invalid=35262, Unknown=0, NotChecked=0, Total=49062 [2018-07-25 13:26:08,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2018-07-25 13:26:08,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2018-07-25 13:26:08,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2018-07-25 13:26:08,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 302 transitions. [2018-07-25 13:26:08,625 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 302 transitions. Word has length 298 [2018-07-25 13:26:08,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:08,625 INFO L472 AbstractCegarLoop]: Abstraction has 301 states and 302 transitions. [2018-07-25 13:26:08,625 INFO L473 AbstractCegarLoop]: Interpolant automaton has 149 states. [2018-07-25 13:26:08,625 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 302 transitions. [2018-07-25 13:26:08,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-07-25 13:26:08,626 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:08,626 INFO L354 BasicCegarLoop]: trace histogram [75, 74, 74, 73, 1, 1, 1, 1] [2018-07-25 13:26:08,626 INFO L415 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:08,626 INFO L82 PathProgramCache]: Analyzing trace with hash 232631019, now seen corresponding path program 111 times [2018-07-25 13:26:08,627 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:08,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:09,040 INFO L134 CoverageAnalysis]: Checked inductivity of 10952 backedges. 5550 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:09,040 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:09,040 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2018-07-25 13:26:09,040 INFO L451 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-07-25 13:26:09,041 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-07-25 13:26:09,041 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 13:26:09,041 INFO L87 Difference]: Start difference. First operand 301 states and 302 transitions. Second operand 79 states. [2018-07-25 13:26:09,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:09,335 INFO L93 Difference]: Finished difference Result 307 states and 309 transitions. [2018-07-25 13:26:09,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2018-07-25 13:26:09,335 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 300 [2018-07-25 13:26:09,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:09,336 INFO L225 Difference]: With dead ends: 307 [2018-07-25 13:26:09,336 INFO L226 Difference]: Without dead ends: 305 [2018-07-25 13:26:09,338 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5625 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8856, Invalid=14706, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 13:26:09,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2018-07-25 13:26:09,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2018-07-25 13:26:09,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2018-07-25 13:26:09,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 306 transitions. [2018-07-25 13:26:09,406 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 306 transitions. Word has length 300 [2018-07-25 13:26:09,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:09,406 INFO L472 AbstractCegarLoop]: Abstraction has 305 states and 306 transitions. [2018-07-25 13:26:09,406 INFO L473 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-07-25 13:26:09,406 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 306 transitions. [2018-07-25 13:26:09,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-07-25 13:26:09,407 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:09,407 INFO L354 BasicCegarLoop]: trace histogram [76, 75, 75, 74, 1, 1, 1, 1] [2018-07-25 13:26:09,408 INFO L415 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:09,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1122541535, now seen corresponding path program 112 times [2018-07-25 13:26:09,412 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:09,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:10,214 INFO L134 CoverageAnalysis]: Checked inductivity of 11250 backedges. 5700 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:10,215 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:10,215 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [151] total 151 [2018-07-25 13:26:10,215 INFO L451 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-07-25 13:26:10,216 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-07-25 13:26:10,217 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5851, Invalid=17101, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 13:26:10,217 INFO L87 Difference]: Start difference. First operand 305 states and 306 transitions. Second operand 152 states. [2018-07-25 13:26:10,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:10,892 INFO L93 Difference]: Finished difference Result 461 states and 463 transitions. [2018-07-25 13:26:10,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2018-07-25 13:26:10,892 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 304 [2018-07-25 13:26:10,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:10,893 INFO L225 Difference]: With dead ends: 461 [2018-07-25 13:26:10,893 INFO L226 Difference]: Without dead ends: 307 [2018-07-25 13:26:10,898 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8251 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=14250, Invalid=36600, Unknown=0, NotChecked=0, Total=50850 [2018-07-25 13:26:10,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2018-07-25 13:26:10,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2018-07-25 13:26:10,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2018-07-25 13:26:10,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 308 transitions. [2018-07-25 13:26:10,919 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 308 transitions. Word has length 304 [2018-07-25 13:26:10,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:10,920 INFO L472 AbstractCegarLoop]: Abstraction has 307 states and 308 transitions. [2018-07-25 13:26:10,920 INFO L473 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-07-25 13:26:10,920 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 308 transitions. [2018-07-25 13:26:10,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-07-25 13:26:10,920 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:10,921 INFO L354 BasicCegarLoop]: trace histogram [76, 76, 75, 75, 1, 1, 1, 1] [2018-07-25 13:26:10,921 INFO L415 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:10,921 INFO L82 PathProgramCache]: Analyzing trace with hash 677749467, now seen corresponding path program 113 times [2018-07-25 13:26:10,921 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:11,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:11,680 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 5700 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:11,680 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:11,680 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [152] total 152 [2018-07-25 13:26:11,680 INFO L451 AbstractCegarLoop]: Interpolant automaton has 153 states [2018-07-25 13:26:11,681 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants. [2018-07-25 13:26:11,682 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5928, Invalid=17328, Unknown=0, NotChecked=0, Total=23256 [2018-07-25 13:26:11,683 INFO L87 Difference]: Start difference. First operand 307 states and 308 transitions. Second operand 153 states. [2018-07-25 13:26:12,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:12,485 INFO L93 Difference]: Finished difference Result 463 states and 465 transitions. [2018-07-25 13:26:12,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2018-07-25 13:26:12,485 INFO L78 Accepts]: Start accepts. Automaton has 153 states. Word has length 306 [2018-07-25 13:26:12,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:12,486 INFO L225 Difference]: With dead ends: 463 [2018-07-25 13:26:12,486 INFO L226 Difference]: Without dead ends: 309 [2018-07-25 13:26:12,490 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8326 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=14553, Invalid=37203, Unknown=0, NotChecked=0, Total=51756 [2018-07-25 13:26:12,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2018-07-25 13:26:12,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2018-07-25 13:26:12,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2018-07-25 13:26:12,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 310 transitions. [2018-07-25 13:26:12,510 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 310 transitions. Word has length 306 [2018-07-25 13:26:12,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:12,510 INFO L472 AbstractCegarLoop]: Abstraction has 309 states and 310 transitions. [2018-07-25 13:26:12,510 INFO L473 AbstractCegarLoop]: Interpolant automaton has 153 states. [2018-07-25 13:26:12,510 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 310 transitions. [2018-07-25 13:26:12,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-07-25 13:26:12,511 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:12,511 INFO L354 BasicCegarLoop]: trace histogram [77, 76, 76, 75, 1, 1, 1, 1] [2018-07-25 13:26:12,511 INFO L415 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:12,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1565665577, now seen corresponding path program 114 times [2018-07-25 13:26:12,511 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:12,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:12,948 INFO L134 CoverageAnalysis]: Checked inductivity of 11552 backedges. 5852 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:12,948 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:12,948 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-07-25 13:26:12,948 INFO L451 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-07-25 13:26:12,949 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-07-25 13:26:12,949 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3162, Invalid=3318, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 13:26:12,949 INFO L87 Difference]: Start difference. First operand 309 states and 310 transitions. Second operand 81 states. [2018-07-25 13:26:13,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:13,278 INFO L93 Difference]: Finished difference Result 315 states and 317 transitions. [2018-07-25 13:26:13,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2018-07-25 13:26:13,278 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 308 [2018-07-25 13:26:13,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:13,279 INFO L225 Difference]: With dead ends: 315 [2018-07-25 13:26:13,279 INFO L226 Difference]: Without dead ends: 313 [2018-07-25 13:26:13,280 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5929 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9323, Invalid=15483, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 13:26:13,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2018-07-25 13:26:13,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2018-07-25 13:26:13,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2018-07-25 13:26:13,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 314 transitions. [2018-07-25 13:26:13,305 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 314 transitions. Word has length 308 [2018-07-25 13:26:13,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:13,305 INFO L472 AbstractCegarLoop]: Abstraction has 313 states and 314 transitions. [2018-07-25 13:26:13,305 INFO L473 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-07-25 13:26:13,306 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 314 transitions. [2018-07-25 13:26:13,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-07-25 13:26:13,306 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:13,306 INFO L354 BasicCegarLoop]: trace histogram [78, 77, 77, 76, 1, 1, 1, 1] [2018-07-25 13:26:13,307 INFO L415 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:13,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1521022411, now seen corresponding path program 115 times [2018-07-25 13:26:13,307 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:13,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:14,114 INFO L134 CoverageAnalysis]: Checked inductivity of 11858 backedges. 6006 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:14,114 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:14,114 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [155] total 155 [2018-07-25 13:26:14,115 INFO L451 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-07-25 13:26:14,116 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-07-25 13:26:14,117 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6161, Invalid=18019, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 13:26:14,117 INFO L87 Difference]: Start difference. First operand 313 states and 314 transitions. Second operand 156 states. [2018-07-25 13:26:15,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:15,072 INFO L93 Difference]: Finished difference Result 473 states and 475 transitions. [2018-07-25 13:26:15,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2018-07-25 13:26:15,072 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 312 [2018-07-25 13:26:15,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:15,073 INFO L225 Difference]: With dead ends: 473 [2018-07-25 13:26:15,073 INFO L226 Difference]: Without dead ends: 315 [2018-07-25 13:26:15,078 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8702 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15015, Invalid=38577, Unknown=0, NotChecked=0, Total=53592 [2018-07-25 13:26:15,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2018-07-25 13:26:15,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2018-07-25 13:26:15,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2018-07-25 13:26:15,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 316 transitions. [2018-07-25 13:26:15,110 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 316 transitions. Word has length 312 [2018-07-25 13:26:15,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:15,111 INFO L472 AbstractCegarLoop]: Abstraction has 315 states and 316 transitions. [2018-07-25 13:26:15,111 INFO L473 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-07-25 13:26:15,111 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 316 transitions. [2018-07-25 13:26:15,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-07-25 13:26:15,112 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:15,113 INFO L354 BasicCegarLoop]: trace histogram [78, 78, 77, 77, 1, 1, 1, 1] [2018-07-25 13:26:15,113 INFO L415 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:15,113 INFO L82 PathProgramCache]: Analyzing trace with hash -278840121, now seen corresponding path program 116 times [2018-07-25 13:26:15,113 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:15,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:16,158 INFO L134 CoverageAnalysis]: Checked inductivity of 12012 backedges. 6006 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:16,159 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:16,159 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [156] total 156 [2018-07-25 13:26:16,159 INFO L451 AbstractCegarLoop]: Interpolant automaton has 157 states [2018-07-25 13:26:16,160 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 157 interpolants. [2018-07-25 13:26:16,161 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6240, Invalid=18252, Unknown=0, NotChecked=0, Total=24492 [2018-07-25 13:26:16,162 INFO L87 Difference]: Start difference. First operand 315 states and 316 transitions. Second operand 157 states. [2018-07-25 13:26:17,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:17,017 INFO L93 Difference]: Finished difference Result 475 states and 477 transitions. [2018-07-25 13:26:17,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2018-07-25 13:26:17,018 INFO L78 Accepts]: Start accepts. Automaton has 157 states. Word has length 314 [2018-07-25 13:26:17,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:17,019 INFO L225 Difference]: With dead ends: 475 [2018-07-25 13:26:17,019 INFO L226 Difference]: Without dead ends: 317 [2018-07-25 13:26:17,025 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8779 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15326, Invalid=39196, Unknown=0, NotChecked=0, Total=54522 [2018-07-25 13:26:17,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2018-07-25 13:26:17,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2018-07-25 13:26:17,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2018-07-25 13:26:17,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 318 transitions. [2018-07-25 13:26:17,053 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 318 transitions. Word has length 314 [2018-07-25 13:26:17,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:17,054 INFO L472 AbstractCegarLoop]: Abstraction has 317 states and 318 transitions. [2018-07-25 13:26:17,054 INFO L473 AbstractCegarLoop]: Interpolant automaton has 157 states. [2018-07-25 13:26:17,054 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 318 transitions. [2018-07-25 13:26:17,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-07-25 13:26:17,055 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:17,055 INFO L354 BasicCegarLoop]: trace histogram [79, 78, 78, 77, 1, 1, 1, 1] [2018-07-25 13:26:17,056 INFO L415 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:17,056 INFO L82 PathProgramCache]: Analyzing trace with hash 925086915, now seen corresponding path program 117 times [2018-07-25 13:26:17,056 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:17,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:17,646 INFO L134 CoverageAnalysis]: Checked inductivity of 12168 backedges. 6162 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:17,646 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:17,647 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2018-07-25 13:26:17,647 INFO L451 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-07-25 13:26:17,647 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-07-25 13:26:17,648 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3323, Invalid=3483, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 13:26:17,648 INFO L87 Difference]: Start difference. First operand 317 states and 318 transitions. Second operand 83 states. [2018-07-25 13:26:17,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:17,989 INFO L93 Difference]: Finished difference Result 323 states and 325 transitions. [2018-07-25 13:26:17,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2018-07-25 13:26:17,989 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 316 [2018-07-25 13:26:17,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:17,990 INFO L225 Difference]: With dead ends: 323 [2018-07-25 13:26:17,990 INFO L226 Difference]: Without dead ends: 321 [2018-07-25 13:26:17,992 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6241 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9802, Invalid=16280, Unknown=0, NotChecked=0, Total=26082 [2018-07-25 13:26:17,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2018-07-25 13:26:18,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2018-07-25 13:26:18,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2018-07-25 13:26:18,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 322 transitions. [2018-07-25 13:26:18,012 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 322 transitions. Word has length 316 [2018-07-25 13:26:18,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:18,013 INFO L472 AbstractCegarLoop]: Abstraction has 321 states and 322 transitions. [2018-07-25 13:26:18,013 INFO L473 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-07-25 13:26:18,013 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 322 transitions. [2018-07-25 13:26:18,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2018-07-25 13:26:18,014 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:18,014 INFO L354 BasicCegarLoop]: trace histogram [80, 79, 79, 78, 1, 1, 1, 1] [2018-07-25 13:26:18,014 INFO L415 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:18,014 INFO L82 PathProgramCache]: Analyzing trace with hash -471466569, now seen corresponding path program 118 times [2018-07-25 13:26:18,014 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:18,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:18,876 INFO L134 CoverageAnalysis]: Checked inductivity of 12482 backedges. 6320 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:18,876 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:18,876 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [159] total 159 [2018-07-25 13:26:18,877 INFO L451 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-07-25 13:26:18,878 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-07-25 13:26:18,879 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6479, Invalid=18961, Unknown=0, NotChecked=0, Total=25440 [2018-07-25 13:26:18,880 INFO L87 Difference]: Start difference. First operand 321 states and 322 transitions. Second operand 160 states. [2018-07-25 13:26:19,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:19,716 INFO L93 Difference]: Finished difference Result 485 states and 487 transitions. [2018-07-25 13:26:19,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2018-07-25 13:26:19,716 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 320 [2018-07-25 13:26:19,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:19,717 INFO L225 Difference]: With dead ends: 485 [2018-07-25 13:26:19,717 INFO L226 Difference]: Without dead ends: 323 [2018-07-25 13:26:19,723 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9165 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15800, Invalid=40606, Unknown=0, NotChecked=0, Total=56406 [2018-07-25 13:26:19,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2018-07-25 13:26:19,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2018-07-25 13:26:19,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2018-07-25 13:26:19,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 324 transitions. [2018-07-25 13:26:19,745 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 324 transitions. Word has length 320 [2018-07-25 13:26:19,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:19,746 INFO L472 AbstractCegarLoop]: Abstraction has 323 states and 324 transitions. [2018-07-25 13:26:19,746 INFO L473 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-07-25 13:26:19,746 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 324 transitions. [2018-07-25 13:26:19,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-07-25 13:26:19,747 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:19,747 INFO L354 BasicCegarLoop]: trace histogram [80, 80, 79, 79, 1, 1, 1, 1] [2018-07-25 13:26:19,747 INFO L415 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:19,747 INFO L82 PathProgramCache]: Analyzing trace with hash -363493197, now seen corresponding path program 119 times [2018-07-25 13:26:19,747 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:19,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:20,617 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 6320 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:20,617 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:20,617 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [160] total 160 [2018-07-25 13:26:20,618 INFO L451 AbstractCegarLoop]: Interpolant automaton has 161 states [2018-07-25 13:26:20,619 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2018-07-25 13:26:20,620 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6560, Invalid=19200, Unknown=0, NotChecked=0, Total=25760 [2018-07-25 13:26:20,620 INFO L87 Difference]: Start difference. First operand 323 states and 324 transitions. Second operand 161 states. [2018-07-25 13:26:21,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:21,357 INFO L93 Difference]: Finished difference Result 487 states and 489 transitions. [2018-07-25 13:26:21,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2018-07-25 13:26:21,358 INFO L78 Accepts]: Start accepts. Automaton has 161 states. Word has length 322 [2018-07-25 13:26:21,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:21,358 INFO L225 Difference]: With dead ends: 487 [2018-07-25 13:26:21,358 INFO L226 Difference]: Without dead ends: 325 [2018-07-25 13:26:21,360 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9244 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=16119, Invalid=41241, Unknown=0, NotChecked=0, Total=57360 [2018-07-25 13:26:21,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2018-07-25 13:26:21,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2018-07-25 13:26:21,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2018-07-25 13:26:21,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 326 transitions. [2018-07-25 13:26:21,381 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 326 transitions. Word has length 322 [2018-07-25 13:26:21,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:21,381 INFO L472 AbstractCegarLoop]: Abstraction has 325 states and 326 transitions. [2018-07-25 13:26:21,382 INFO L473 AbstractCegarLoop]: Interpolant automaton has 161 states. [2018-07-25 13:26:21,382 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 326 transitions. [2018-07-25 13:26:21,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2018-07-25 13:26:21,382 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:21,383 INFO L354 BasicCegarLoop]: trace histogram [81, 80, 80, 79, 1, 1, 1, 1] [2018-07-25 13:26:21,383 INFO L415 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:21,383 INFO L82 PathProgramCache]: Analyzing trace with hash 319702191, now seen corresponding path program 120 times [2018-07-25 13:26:21,383 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:21,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:21,893 INFO L134 CoverageAnalysis]: Checked inductivity of 12800 backedges. 6480 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:21,893 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:21,894 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2018-07-25 13:26:21,894 INFO L451 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-07-25 13:26:21,894 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-07-25 13:26:21,895 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3488, Invalid=3652, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 13:26:21,895 INFO L87 Difference]: Start difference. First operand 325 states and 326 transitions. Second operand 85 states. [2018-07-25 13:26:22,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:22,208 INFO L93 Difference]: Finished difference Result 331 states and 333 transitions. [2018-07-25 13:26:22,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2018-07-25 13:26:22,209 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 324 [2018-07-25 13:26:22,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:22,209 INFO L225 Difference]: With dead ends: 331 [2018-07-25 13:26:22,210 INFO L226 Difference]: Without dead ends: 329 [2018-07-25 13:26:22,212 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6561 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10293, Invalid=17097, Unknown=0, NotChecked=0, Total=27390 [2018-07-25 13:26:22,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2018-07-25 13:26:22,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2018-07-25 13:26:22,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2018-07-25 13:26:22,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 330 transitions. [2018-07-25 13:26:22,234 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 330 transitions. Word has length 324 [2018-07-25 13:26:22,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:22,234 INFO L472 AbstractCegarLoop]: Abstraction has 329 states and 330 transitions. [2018-07-25 13:26:22,234 INFO L473 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-07-25 13:26:22,234 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 330 transitions. [2018-07-25 13:26:22,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-07-25 13:26:22,235 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:22,235 INFO L354 BasicCegarLoop]: trace histogram [82, 81, 81, 80, 1, 1, 1, 1] [2018-07-25 13:26:22,235 INFO L415 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:22,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1494304861, now seen corresponding path program 121 times [2018-07-25 13:26:22,236 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:22,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:23,104 INFO L134 CoverageAnalysis]: Checked inductivity of 13122 backedges. 6642 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:23,105 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:23,105 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [163] total 163 [2018-07-25 13:26:23,105 INFO L451 AbstractCegarLoop]: Interpolant automaton has 164 states [2018-07-25 13:26:23,106 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2018-07-25 13:26:23,107 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6805, Invalid=19927, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 13:26:23,108 INFO L87 Difference]: Start difference. First operand 329 states and 330 transitions. Second operand 164 states. [2018-07-25 13:26:23,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:23,985 INFO L93 Difference]: Finished difference Result 497 states and 499 transitions. [2018-07-25 13:26:23,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2018-07-25 13:26:23,986 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 328 [2018-07-25 13:26:23,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:23,987 INFO L225 Difference]: With dead ends: 497 [2018-07-25 13:26:23,987 INFO L226 Difference]: Without dead ends: 331 [2018-07-25 13:26:23,992 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9640 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=16605, Invalid=42687, Unknown=0, NotChecked=0, Total=59292 [2018-07-25 13:26:23,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2018-07-25 13:26:24,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2018-07-25 13:26:24,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-07-25 13:26:24,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 332 transitions. [2018-07-25 13:26:24,022 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 332 transitions. Word has length 328 [2018-07-25 13:26:24,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:24,022 INFO L472 AbstractCegarLoop]: Abstraction has 331 states and 332 transitions. [2018-07-25 13:26:24,022 INFO L473 AbstractCegarLoop]: Interpolant automaton has 164 states. [2018-07-25 13:26:24,022 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 332 transitions. [2018-07-25 13:26:24,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-07-25 13:26:24,023 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:24,024 INFO L354 BasicCegarLoop]: trace histogram [82, 82, 81, 81, 1, 1, 1, 1] [2018-07-25 13:26:24,024 INFO L415 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:24,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1517189473, now seen corresponding path program 122 times [2018-07-25 13:26:24,024 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:24,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:24,997 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 6642 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:24,998 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:24,998 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [164] total 164 [2018-07-25 13:26:24,998 INFO L451 AbstractCegarLoop]: Interpolant automaton has 165 states [2018-07-25 13:26:24,999 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 165 interpolants. [2018-07-25 13:26:25,000 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6888, Invalid=20172, Unknown=0, NotChecked=0, Total=27060 [2018-07-25 13:26:25,000 INFO L87 Difference]: Start difference. First operand 331 states and 332 transitions. Second operand 165 states. [2018-07-25 13:26:25,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:25,770 INFO L93 Difference]: Finished difference Result 499 states and 501 transitions. [2018-07-25 13:26:25,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2018-07-25 13:26:25,770 INFO L78 Accepts]: Start accepts. Automaton has 165 states. Word has length 330 [2018-07-25 13:26:25,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:25,771 INFO L225 Difference]: With dead ends: 499 [2018-07-25 13:26:25,771 INFO L226 Difference]: Without dead ends: 333 [2018-07-25 13:26:25,776 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 244 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9721 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=16932, Invalid=43338, Unknown=0, NotChecked=0, Total=60270 [2018-07-25 13:26:25,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2018-07-25 13:26:25,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2018-07-25 13:26:25,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2018-07-25 13:26:25,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 334 transitions. [2018-07-25 13:26:25,808 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 334 transitions. Word has length 330 [2018-07-25 13:26:25,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:25,808 INFO L472 AbstractCegarLoop]: Abstraction has 333 states and 334 transitions. [2018-07-25 13:26:25,808 INFO L473 AbstractCegarLoop]: Interpolant automaton has 165 states. [2018-07-25 13:26:25,809 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 334 transitions. [2018-07-25 13:26:25,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2018-07-25 13:26:25,809 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:25,810 INFO L354 BasicCegarLoop]: trace histogram [83, 82, 82, 81, 1, 1, 1, 1] [2018-07-25 13:26:25,810 INFO L415 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:25,810 INFO L82 PathProgramCache]: Analyzing trace with hash -2034465125, now seen corresponding path program 123 times [2018-07-25 13:26:25,810 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:26,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:26,350 INFO L134 CoverageAnalysis]: Checked inductivity of 13448 backedges. 6806 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:26,350 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:26,350 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2018-07-25 13:26:26,351 INFO L451 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-07-25 13:26:26,351 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-07-25 13:26:26,351 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3657, Invalid=3825, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 13:26:26,352 INFO L87 Difference]: Start difference. First operand 333 states and 334 transitions. Second operand 87 states. [2018-07-25 13:26:26,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:26,666 INFO L93 Difference]: Finished difference Result 339 states and 341 transitions. [2018-07-25 13:26:26,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2018-07-25 13:26:26,666 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 332 [2018-07-25 13:26:26,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:26,667 INFO L225 Difference]: With dead ends: 339 [2018-07-25 13:26:26,667 INFO L226 Difference]: Without dead ends: 337 [2018-07-25 13:26:26,668 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6889 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10796, Invalid=17934, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 13:26:26,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2018-07-25 13:26:26,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2018-07-25 13:26:26,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2018-07-25 13:26:26,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 338 transitions. [2018-07-25 13:26:26,691 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 338 transitions. Word has length 332 [2018-07-25 13:26:26,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:26,691 INFO L472 AbstractCegarLoop]: Abstraction has 337 states and 338 transitions. [2018-07-25 13:26:26,691 INFO L473 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-07-25 13:26:26,691 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 338 transitions. [2018-07-25 13:26:26,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2018-07-25 13:26:26,692 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:26,692 INFO L354 BasicCegarLoop]: trace histogram [84, 83, 83, 82, 1, 1, 1, 1] [2018-07-25 13:26:26,692 INFO L415 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:26,692 INFO L82 PathProgramCache]: Analyzing trace with hash 881992591, now seen corresponding path program 124 times [2018-07-25 13:26:26,692 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:26,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:27,600 INFO L134 CoverageAnalysis]: Checked inductivity of 13778 backedges. 6972 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:27,601 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:27,601 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [167] total 167 [2018-07-25 13:26:27,601 INFO L451 AbstractCegarLoop]: Interpolant automaton has 168 states [2018-07-25 13:26:27,602 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2018-07-25 13:26:27,604 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7139, Invalid=20917, Unknown=0, NotChecked=0, Total=28056 [2018-07-25 13:26:27,604 INFO L87 Difference]: Start difference. First operand 337 states and 338 transitions. Second operand 168 states. [2018-07-25 13:26:28,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:28,528 INFO L93 Difference]: Finished difference Result 509 states and 511 transitions. [2018-07-25 13:26:28,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2018-07-25 13:26:28,528 INFO L78 Accepts]: Start accepts. Automaton has 168 states. Word has length 336 [2018-07-25 13:26:28,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:28,529 INFO L225 Difference]: With dead ends: 509 [2018-07-25 13:26:28,529 INFO L226 Difference]: Without dead ends: 339 [2018-07-25 13:26:28,531 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10127 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=17430, Invalid=44820, Unknown=0, NotChecked=0, Total=62250 [2018-07-25 13:26:28,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2018-07-25 13:26:28,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 339. [2018-07-25 13:26:28,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2018-07-25 13:26:28,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 340 transitions. [2018-07-25 13:26:28,553 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 340 transitions. Word has length 336 [2018-07-25 13:26:28,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:28,553 INFO L472 AbstractCegarLoop]: Abstraction has 339 states and 340 transitions. [2018-07-25 13:26:28,553 INFO L473 AbstractCegarLoop]: Interpolant automaton has 168 states. [2018-07-25 13:26:28,554 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 340 transitions. [2018-07-25 13:26:28,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-07-25 13:26:28,554 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:28,555 INFO L354 BasicCegarLoop]: trace histogram [84, 84, 83, 83, 1, 1, 1, 1] [2018-07-25 13:26:28,555 INFO L415 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:28,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1977890443, now seen corresponding path program 125 times [2018-07-25 13:26:28,555 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:28,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:29,460 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 6972 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:29,461 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:29,461 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [168] total 168 [2018-07-25 13:26:29,461 INFO L451 AbstractCegarLoop]: Interpolant automaton has 169 states [2018-07-25 13:26:29,462 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 169 interpolants. [2018-07-25 13:26:29,464 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7224, Invalid=21168, Unknown=0, NotChecked=0, Total=28392 [2018-07-25 13:26:29,464 INFO L87 Difference]: Start difference. First operand 339 states and 340 transitions. Second operand 169 states. [2018-07-25 13:26:30,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:30,316 INFO L93 Difference]: Finished difference Result 511 states and 513 transitions. [2018-07-25 13:26:30,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2018-07-25 13:26:30,316 INFO L78 Accepts]: Start accepts. Automaton has 169 states. Word has length 338 [2018-07-25 13:26:30,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:30,317 INFO L225 Difference]: With dead ends: 511 [2018-07-25 13:26:30,317 INFO L226 Difference]: Without dead ends: 341 [2018-07-25 13:26:30,322 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 250 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10210 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=17765, Invalid=45487, Unknown=0, NotChecked=0, Total=63252 [2018-07-25 13:26:30,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2018-07-25 13:26:30,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2018-07-25 13:26:30,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2018-07-25 13:26:30,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 342 transitions. [2018-07-25 13:26:30,345 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 342 transitions. Word has length 338 [2018-07-25 13:26:30,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:30,345 INFO L472 AbstractCegarLoop]: Abstraction has 341 states and 342 transitions. [2018-07-25 13:26:30,345 INFO L473 AbstractCegarLoop]: Interpolant automaton has 169 states. [2018-07-25 13:26:30,345 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 342 transitions. [2018-07-25 13:26:30,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2018-07-25 13:26:30,346 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:30,346 INFO L354 BasicCegarLoop]: trace histogram [85, 84, 84, 83, 1, 1, 1, 1] [2018-07-25 13:26:30,347 INFO L415 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:30,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1426228601, now seen corresponding path program 126 times [2018-07-25 13:26:30,347 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:30,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:30,931 INFO L134 CoverageAnalysis]: Checked inductivity of 14112 backedges. 7140 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:30,932 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:30,932 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-07-25 13:26:30,933 INFO L451 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-07-25 13:26:30,933 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-07-25 13:26:30,934 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3830, Invalid=4002, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 13:26:30,934 INFO L87 Difference]: Start difference. First operand 341 states and 342 transitions. Second operand 89 states. [2018-07-25 13:26:31,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:31,330 INFO L93 Difference]: Finished difference Result 347 states and 349 transitions. [2018-07-25 13:26:31,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2018-07-25 13:26:31,331 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 340 [2018-07-25 13:26:31,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:31,332 INFO L225 Difference]: With dead ends: 347 [2018-07-25 13:26:31,332 INFO L226 Difference]: Without dead ends: 345 [2018-07-25 13:26:31,335 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7225 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11311, Invalid=18791, Unknown=0, NotChecked=0, Total=30102 [2018-07-25 13:26:31,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2018-07-25 13:26:31,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2018-07-25 13:26:31,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2018-07-25 13:26:31,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 346 transitions. [2018-07-25 13:26:31,364 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 346 transitions. Word has length 340 [2018-07-25 13:26:31,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:31,364 INFO L472 AbstractCegarLoop]: Abstraction has 345 states and 346 transitions. [2018-07-25 13:26:31,364 INFO L473 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-07-25 13:26:31,364 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 346 transitions. [2018-07-25 13:26:31,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2018-07-25 13:26:31,366 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:31,366 INFO L354 BasicCegarLoop]: trace histogram [86, 85, 85, 84, 1, 1, 1, 1] [2018-07-25 13:26:31,366 INFO L415 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:31,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1507901061, now seen corresponding path program 127 times [2018-07-25 13:26:31,366 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:31,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:32,378 INFO L134 CoverageAnalysis]: Checked inductivity of 14450 backedges. 7310 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:32,379 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:32,379 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [171] total 171 [2018-07-25 13:26:32,379 INFO L451 AbstractCegarLoop]: Interpolant automaton has 172 states [2018-07-25 13:26:32,380 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2018-07-25 13:26:32,382 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7481, Invalid=21931, Unknown=0, NotChecked=0, Total=29412 [2018-07-25 13:26:32,383 INFO L87 Difference]: Start difference. First operand 345 states and 346 transitions. Second operand 172 states. [2018-07-25 13:26:33,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:33,311 INFO L93 Difference]: Finished difference Result 521 states and 523 transitions. [2018-07-25 13:26:33,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2018-07-25 13:26:33,311 INFO L78 Accepts]: Start accepts. Automaton has 172 states. Word has length 344 [2018-07-25 13:26:33,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:33,312 INFO L225 Difference]: With dead ends: 521 [2018-07-25 13:26:33,312 INFO L226 Difference]: Without dead ends: 347 [2018-07-25 13:26:33,319 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 254 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10626 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=18275, Invalid=47005, Unknown=0, NotChecked=0, Total=65280 [2018-07-25 13:26:33,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2018-07-25 13:26:33,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2018-07-25 13:26:33,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2018-07-25 13:26:33,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 348 transitions. [2018-07-25 13:26:33,358 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 348 transitions. Word has length 344 [2018-07-25 13:26:33,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:33,359 INFO L472 AbstractCegarLoop]: Abstraction has 347 states and 348 transitions. [2018-07-25 13:26:33,359 INFO L473 AbstractCegarLoop]: Interpolant automaton has 172 states. [2018-07-25 13:26:33,359 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 348 transitions. [2018-07-25 13:26:33,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-07-25 13:26:33,361 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:33,361 INFO L354 BasicCegarLoop]: trace histogram [86, 86, 85, 85, 1, 1, 1, 1] [2018-07-25 13:26:33,361 INFO L415 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:33,361 INFO L82 PathProgramCache]: Analyzing trace with hash 949786743, now seen corresponding path program 128 times [2018-07-25 13:26:33,362 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:33,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:34,366 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 7310 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:34,366 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:34,367 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [172] total 172 [2018-07-25 13:26:34,367 INFO L451 AbstractCegarLoop]: Interpolant automaton has 173 states [2018-07-25 13:26:34,368 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 173 interpolants. [2018-07-25 13:26:34,369 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7568, Invalid=22188, Unknown=0, NotChecked=0, Total=29756 [2018-07-25 13:26:34,370 INFO L87 Difference]: Start difference. First operand 347 states and 348 transitions. Second operand 173 states. [2018-07-25 13:26:35,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:35,220 INFO L93 Difference]: Finished difference Result 523 states and 525 transitions. [2018-07-25 13:26:35,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2018-07-25 13:26:35,220 INFO L78 Accepts]: Start accepts. Automaton has 173 states. Word has length 346 [2018-07-25 13:26:35,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:35,221 INFO L225 Difference]: With dead ends: 523 [2018-07-25 13:26:35,221 INFO L226 Difference]: Without dead ends: 349 [2018-07-25 13:26:35,226 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 256 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10711 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=18618, Invalid=47688, Unknown=0, NotChecked=0, Total=66306 [2018-07-25 13:26:35,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2018-07-25 13:26:35,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 349. [2018-07-25 13:26:35,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2018-07-25 13:26:35,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 350 transitions. [2018-07-25 13:26:35,250 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 350 transitions. Word has length 346 [2018-07-25 13:26:35,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:35,250 INFO L472 AbstractCegarLoop]: Abstraction has 349 states and 350 transitions. [2018-07-25 13:26:35,250 INFO L473 AbstractCegarLoop]: Interpolant automaton has 173 states. [2018-07-25 13:26:35,250 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 350 transitions. [2018-07-25 13:26:35,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2018-07-25 13:26:35,251 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:35,251 INFO L354 BasicCegarLoop]: trace histogram [87, 86, 86, 85, 1, 1, 1, 1] [2018-07-25 13:26:35,251 INFO L415 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:35,251 INFO L82 PathProgramCache]: Analyzing trace with hash 555753587, now seen corresponding path program 129 times [2018-07-25 13:26:35,252 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:35,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:35,863 INFO L134 CoverageAnalysis]: Checked inductivity of 14792 backedges. 7482 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:35,863 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:35,863 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2018-07-25 13:26:35,863 INFO L451 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-07-25 13:26:35,864 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-07-25 13:26:35,864 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4007, Invalid=4183, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 13:26:35,864 INFO L87 Difference]: Start difference. First operand 349 states and 350 transitions. Second operand 91 states. [2018-07-25 13:26:36,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:36,231 INFO L93 Difference]: Finished difference Result 355 states and 357 transitions. [2018-07-25 13:26:36,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2018-07-25 13:26:36,231 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 348 [2018-07-25 13:26:36,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:36,232 INFO L225 Difference]: With dead ends: 355 [2018-07-25 13:26:36,232 INFO L226 Difference]: Without dead ends: 353 [2018-07-25 13:26:36,234 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7569 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11838, Invalid=19668, Unknown=0, NotChecked=0, Total=31506 [2018-07-25 13:26:36,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2018-07-25 13:26:36,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 353. [2018-07-25 13:26:36,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2018-07-25 13:26:36,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 354 transitions. [2018-07-25 13:26:36,262 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 354 transitions. Word has length 348 [2018-07-25 13:26:36,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:36,262 INFO L472 AbstractCegarLoop]: Abstraction has 353 states and 354 transitions. [2018-07-25 13:26:36,262 INFO L473 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-07-25 13:26:36,262 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 354 transitions. [2018-07-25 13:26:36,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2018-07-25 13:26:36,263 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:36,263 INFO L354 BasicCegarLoop]: trace histogram [88, 87, 87, 86, 1, 1, 1, 1] [2018-07-25 13:26:36,263 INFO L415 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:36,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1566904679, now seen corresponding path program 130 times [2018-07-25 13:26:36,264 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:36,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:37,283 INFO L134 CoverageAnalysis]: Checked inductivity of 15138 backedges. 7656 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:37,283 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:37,283 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [175] total 175 [2018-07-25 13:26:37,284 INFO L451 AbstractCegarLoop]: Interpolant automaton has 176 states [2018-07-25 13:26:37,285 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2018-07-25 13:26:37,286 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7831, Invalid=22969, Unknown=0, NotChecked=0, Total=30800 [2018-07-25 13:26:37,286 INFO L87 Difference]: Start difference. First operand 353 states and 354 transitions. Second operand 176 states. [2018-07-25 13:26:38,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:38,361 INFO L93 Difference]: Finished difference Result 533 states and 535 transitions. [2018-07-25 13:26:38,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2018-07-25 13:26:38,362 INFO L78 Accepts]: Start accepts. Automaton has 176 states. Word has length 352 [2018-07-25 13:26:38,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:38,362 INFO L225 Difference]: With dead ends: 533 [2018-07-25 13:26:38,363 INFO L226 Difference]: Without dead ends: 355 [2018-07-25 13:26:38,368 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 260 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11137 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=19140, Invalid=49242, Unknown=0, NotChecked=0, Total=68382 [2018-07-25 13:26:38,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2018-07-25 13:26:38,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 355. [2018-07-25 13:26:38,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2018-07-25 13:26:38,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 356 transitions. [2018-07-25 13:26:38,393 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 356 transitions. Word has length 352 [2018-07-25 13:26:38,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:38,393 INFO L472 AbstractCegarLoop]: Abstraction has 355 states and 356 transitions. [2018-07-25 13:26:38,393 INFO L473 AbstractCegarLoop]: Interpolant automaton has 176 states. [2018-07-25 13:26:38,393 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 356 transitions. [2018-07-25 13:26:38,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-07-25 13:26:38,394 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:38,394 INFO L354 BasicCegarLoop]: trace histogram [88, 88, 87, 87, 1, 1, 1, 1] [2018-07-25 13:26:38,395 INFO L415 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:38,395 INFO L82 PathProgramCache]: Analyzing trace with hash 327789667, now seen corresponding path program 131 times [2018-07-25 13:26:38,395 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:38,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:39,464 INFO L134 CoverageAnalysis]: Checked inductivity of 15312 backedges. 7656 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:39,464 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:39,464 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [176] total 176 [2018-07-25 13:26:39,465 INFO L451 AbstractCegarLoop]: Interpolant automaton has 177 states [2018-07-25 13:26:39,465 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 177 interpolants. [2018-07-25 13:26:39,466 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7920, Invalid=23232, Unknown=0, NotChecked=0, Total=31152 [2018-07-25 13:26:39,466 INFO L87 Difference]: Start difference. First operand 355 states and 356 transitions. Second operand 177 states. [2018-07-25 13:26:40,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:40,242 INFO L93 Difference]: Finished difference Result 535 states and 537 transitions. [2018-07-25 13:26:40,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2018-07-25 13:26:40,242 INFO L78 Accepts]: Start accepts. Automaton has 177 states. Word has length 354 [2018-07-25 13:26:40,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:40,243 INFO L225 Difference]: With dead ends: 535 [2018-07-25 13:26:40,243 INFO L226 Difference]: Without dead ends: 357 [2018-07-25 13:26:40,248 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 262 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11224 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=19491, Invalid=49941, Unknown=0, NotChecked=0, Total=69432 [2018-07-25 13:26:40,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2018-07-25 13:26:40,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2018-07-25 13:26:40,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2018-07-25 13:26:40,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 358 transitions. [2018-07-25 13:26:40,289 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 358 transitions. Word has length 354 [2018-07-25 13:26:40,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:40,289 INFO L472 AbstractCegarLoop]: Abstraction has 357 states and 358 transitions. [2018-07-25 13:26:40,290 INFO L473 AbstractCegarLoop]: Interpolant automaton has 177 states. [2018-07-25 13:26:40,290 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 358 transitions. [2018-07-25 13:26:40,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2018-07-25 13:26:40,291 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:40,291 INFO L354 BasicCegarLoop]: trace histogram [89, 88, 88, 87, 1, 1, 1, 1] [2018-07-25 13:26:40,291 INFO L415 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:40,292 INFO L82 PathProgramCache]: Analyzing trace with hash -755795873, now seen corresponding path program 132 times [2018-07-25 13:26:40,292 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:40,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:40,984 INFO L134 CoverageAnalysis]: Checked inductivity of 15488 backedges. 7832 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:40,984 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:40,984 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2018-07-25 13:26:40,985 INFO L451 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-07-25 13:26:40,985 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-07-25 13:26:40,985 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4188, Invalid=4368, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 13:26:40,986 INFO L87 Difference]: Start difference. First operand 357 states and 358 transitions. Second operand 93 states. [2018-07-25 13:26:41,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:41,348 INFO L93 Difference]: Finished difference Result 363 states and 365 transitions. [2018-07-25 13:26:41,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2018-07-25 13:26:41,349 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 356 [2018-07-25 13:26:41,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:41,350 INFO L225 Difference]: With dead ends: 363 [2018-07-25 13:26:41,350 INFO L226 Difference]: Without dead ends: 361 [2018-07-25 13:26:41,352 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7921 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12377, Invalid=20565, Unknown=0, NotChecked=0, Total=32942 [2018-07-25 13:26:41,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2018-07-25 13:26:41,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2018-07-25 13:26:41,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2018-07-25 13:26:41,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 362 transitions. [2018-07-25 13:26:41,377 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 362 transitions. Word has length 356 [2018-07-25 13:26:41,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:41,377 INFO L472 AbstractCegarLoop]: Abstraction has 361 states and 362 transitions. [2018-07-25 13:26:41,377 INFO L473 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-07-25 13:26:41,378 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 362 transitions. [2018-07-25 13:26:41,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-07-25 13:26:41,379 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:41,379 INFO L354 BasicCegarLoop]: trace histogram [90, 89, 89, 88, 1, 1, 1, 1] [2018-07-25 13:26:41,379 INFO L415 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:41,379 INFO L82 PathProgramCache]: Analyzing trace with hash -994929837, now seen corresponding path program 133 times [2018-07-25 13:26:41,379 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:41,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:42,460 INFO L134 CoverageAnalysis]: Checked inductivity of 15842 backedges. 8010 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:42,461 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:42,461 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [179] total 179 [2018-07-25 13:26:42,461 INFO L451 AbstractCegarLoop]: Interpolant automaton has 180 states [2018-07-25 13:26:42,462 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2018-07-25 13:26:42,465 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8189, Invalid=24031, Unknown=0, NotChecked=0, Total=32220 [2018-07-25 13:26:42,465 INFO L87 Difference]: Start difference. First operand 361 states and 362 transitions. Second operand 180 states. [2018-07-25 13:26:43,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:43,313 INFO L93 Difference]: Finished difference Result 545 states and 547 transitions. [2018-07-25 13:26:43,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2018-07-25 13:26:43,313 INFO L78 Accepts]: Start accepts. Automaton has 180 states. Word has length 360 [2018-07-25 13:26:43,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:43,314 INFO L225 Difference]: With dead ends: 545 [2018-07-25 13:26:43,314 INFO L226 Difference]: Without dead ends: 363 [2018-07-25 13:26:43,317 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 266 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11660 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=20025, Invalid=51531, Unknown=0, NotChecked=0, Total=71556 [2018-07-25 13:26:43,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2018-07-25 13:26:43,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2018-07-25 13:26:43,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2018-07-25 13:26:43,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 364 transitions. [2018-07-25 13:26:43,342 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 364 transitions. Word has length 360 [2018-07-25 13:26:43,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:43,342 INFO L472 AbstractCegarLoop]: Abstraction has 363 states and 364 transitions. [2018-07-25 13:26:43,342 INFO L473 AbstractCegarLoop]: Interpolant automaton has 180 states. [2018-07-25 13:26:43,342 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 364 transitions. [2018-07-25 13:26:43,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-07-25 13:26:43,343 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:43,343 INFO L354 BasicCegarLoop]: trace histogram [90, 90, 89, 89, 1, 1, 1, 1] [2018-07-25 13:26:43,343 INFO L415 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:43,343 INFO L82 PathProgramCache]: Analyzing trace with hash 888828495, now seen corresponding path program 134 times [2018-07-25 13:26:43,344 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:43,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:44,369 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 8010 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:44,370 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:44,370 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [180] total 180 [2018-07-25 13:26:44,370 INFO L451 AbstractCegarLoop]: Interpolant automaton has 181 states [2018-07-25 13:26:44,371 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 181 interpolants. [2018-07-25 13:26:44,373 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8280, Invalid=24300, Unknown=0, NotChecked=0, Total=32580 [2018-07-25 13:26:44,373 INFO L87 Difference]: Start difference. First operand 363 states and 364 transitions. Second operand 181 states. [2018-07-25 13:26:45,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:45,410 INFO L93 Difference]: Finished difference Result 547 states and 549 transitions. [2018-07-25 13:26:45,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2018-07-25 13:26:45,411 INFO L78 Accepts]: Start accepts. Automaton has 181 states. Word has length 362 [2018-07-25 13:26:45,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:45,411 INFO L225 Difference]: With dead ends: 547 [2018-07-25 13:26:45,411 INFO L226 Difference]: Without dead ends: 365 [2018-07-25 13:26:45,416 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 268 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11749 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=20384, Invalid=52246, Unknown=0, NotChecked=0, Total=72630 [2018-07-25 13:26:45,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2018-07-25 13:26:45,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2018-07-25 13:26:45,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2018-07-25 13:26:45,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 366 transitions. [2018-07-25 13:26:45,441 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 366 transitions. Word has length 362 [2018-07-25 13:26:45,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:45,442 INFO L472 AbstractCegarLoop]: Abstraction has 365 states and 366 transitions. [2018-07-25 13:26:45,442 INFO L473 AbstractCegarLoop]: Interpolant automaton has 181 states. [2018-07-25 13:26:45,442 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 366 transitions. [2018-07-25 13:26:45,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2018-07-25 13:26:45,443 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:45,443 INFO L354 BasicCegarLoop]: trace histogram [91, 90, 90, 89, 1, 1, 1, 1] [2018-07-25 13:26:45,443 INFO L415 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:45,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1295613365, now seen corresponding path program 135 times [2018-07-25 13:26:45,443 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:45,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:46,081 INFO L134 CoverageAnalysis]: Checked inductivity of 16200 backedges. 8190 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:46,081 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:46,081 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2018-07-25 13:26:46,082 INFO L451 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-07-25 13:26:46,082 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-07-25 13:26:46,082 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4373, Invalid=4557, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 13:26:46,082 INFO L87 Difference]: Start difference. First operand 365 states and 366 transitions. Second operand 95 states. [2018-07-25 13:26:46,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:46,469 INFO L93 Difference]: Finished difference Result 371 states and 373 transitions. [2018-07-25 13:26:46,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2018-07-25 13:26:46,469 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 364 [2018-07-25 13:26:46,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:46,470 INFO L225 Difference]: With dead ends: 371 [2018-07-25 13:26:46,470 INFO L226 Difference]: Without dead ends: 369 [2018-07-25 13:26:46,471 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8281 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12928, Invalid=21482, Unknown=0, NotChecked=0, Total=34410 [2018-07-25 13:26:46,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2018-07-25 13:26:46,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2018-07-25 13:26:46,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2018-07-25 13:26:46,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 370 transitions. [2018-07-25 13:26:46,497 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 370 transitions. Word has length 364 [2018-07-25 13:26:46,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:46,497 INFO L472 AbstractCegarLoop]: Abstraction has 369 states and 370 transitions. [2018-07-25 13:26:46,497 INFO L473 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-07-25 13:26:46,497 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 370 transitions. [2018-07-25 13:26:46,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-07-25 13:26:46,498 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:46,498 INFO L354 BasicCegarLoop]: trace histogram [92, 91, 91, 90, 1, 1, 1, 1] [2018-07-25 13:26:46,499 INFO L415 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:46,499 INFO L82 PathProgramCache]: Analyzing trace with hash 248956735, now seen corresponding path program 136 times [2018-07-25 13:26:46,499 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:46,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:47,555 INFO L134 CoverageAnalysis]: Checked inductivity of 16562 backedges. 8372 proven. 8190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:47,556 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:47,556 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [183] total 183 [2018-07-25 13:26:47,556 INFO L451 AbstractCegarLoop]: Interpolant automaton has 184 states [2018-07-25 13:26:47,558 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2018-07-25 13:26:47,560 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8555, Invalid=25117, Unknown=0, NotChecked=0, Total=33672 [2018-07-25 13:26:47,560 INFO L87 Difference]: Start difference. First operand 369 states and 370 transitions. Second operand 184 states. [2018-07-25 13:26:48,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:48,566 INFO L93 Difference]: Finished difference Result 557 states and 559 transitions. [2018-07-25 13:26:48,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2018-07-25 13:26:48,567 INFO L78 Accepts]: Start accepts. Automaton has 184 states. Word has length 368 [2018-07-25 13:26:48,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:48,568 INFO L225 Difference]: With dead ends: 557 [2018-07-25 13:26:48,568 INFO L226 Difference]: Without dead ends: 371 [2018-07-25 13:26:48,576 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 272 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12195 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=20930, Invalid=53872, Unknown=0, NotChecked=0, Total=74802 [2018-07-25 13:26:48,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2018-07-25 13:26:48,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2018-07-25 13:26:48,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2018-07-25 13:26:48,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 372 transitions. [2018-07-25 13:26:48,620 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 372 transitions. Word has length 368 [2018-07-25 13:26:48,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:48,621 INFO L472 AbstractCegarLoop]: Abstraction has 371 states and 372 transitions. [2018-07-25 13:26:48,621 INFO L473 AbstractCegarLoop]: Interpolant automaton has 184 states. [2018-07-25 13:26:48,621 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 372 transitions. [2018-07-25 13:26:48,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-07-25 13:26:48,622 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:48,622 INFO L354 BasicCegarLoop]: trace histogram [92, 92, 91, 91, 1, 1, 1, 1] [2018-07-25 13:26:48,623 INFO L415 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:48,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1816270277, now seen corresponding path program 137 times [2018-07-25 13:26:48,623 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:48,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:49,855 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 8372 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:49,856 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:49,856 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [184] total 184 [2018-07-25 13:26:49,856 INFO L451 AbstractCegarLoop]: Interpolant automaton has 185 states [2018-07-25 13:26:49,857 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 185 interpolants. [2018-07-25 13:26:49,858 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8648, Invalid=25392, Unknown=0, NotChecked=0, Total=34040 [2018-07-25 13:26:49,858 INFO L87 Difference]: Start difference. First operand 371 states and 372 transitions. Second operand 185 states. [2018-07-25 13:26:50,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:50,850 INFO L93 Difference]: Finished difference Result 559 states and 561 transitions. [2018-07-25 13:26:50,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2018-07-25 13:26:50,851 INFO L78 Accepts]: Start accepts. Automaton has 185 states. Word has length 370 [2018-07-25 13:26:50,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:50,852 INFO L225 Difference]: With dead ends: 559 [2018-07-25 13:26:50,852 INFO L226 Difference]: Without dead ends: 373 [2018-07-25 13:26:50,855 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 274 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12286 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=21297, Invalid=54603, Unknown=0, NotChecked=0, Total=75900 [2018-07-25 13:26:50,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2018-07-25 13:26:50,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2018-07-25 13:26:50,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2018-07-25 13:26:50,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 374 transitions. [2018-07-25 13:26:50,881 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 374 transitions. Word has length 370 [2018-07-25 13:26:50,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:50,881 INFO L472 AbstractCegarLoop]: Abstraction has 373 states and 374 transitions. [2018-07-25 13:26:50,881 INFO L473 AbstractCegarLoop]: Interpolant automaton has 185 states. [2018-07-25 13:26:50,882 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 374 transitions. [2018-07-25 13:26:50,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2018-07-25 13:26:50,883 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:50,883 INFO L354 BasicCegarLoop]: trace histogram [93, 92, 92, 91, 1, 1, 1, 1] [2018-07-25 13:26:50,883 INFO L415 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:50,883 INFO L82 PathProgramCache]: Analyzing trace with hash 2070429239, now seen corresponding path program 138 times [2018-07-25 13:26:50,883 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:51,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:51,534 INFO L134 CoverageAnalysis]: Checked inductivity of 16928 backedges. 8556 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:51,535 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:51,535 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96] total 96 [2018-07-25 13:26:51,535 INFO L451 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-07-25 13:26:51,535 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-07-25 13:26:51,536 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4562, Invalid=4750, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 13:26:51,536 INFO L87 Difference]: Start difference. First operand 373 states and 374 transitions. Second operand 97 states. [2018-07-25 13:26:51,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:51,913 INFO L93 Difference]: Finished difference Result 379 states and 381 transitions. [2018-07-25 13:26:51,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2018-07-25 13:26:51,913 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 372 [2018-07-25 13:26:51,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:51,914 INFO L225 Difference]: With dead ends: 379 [2018-07-25 13:26:51,914 INFO L226 Difference]: Without dead ends: 377 [2018-07-25 13:26:51,916 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8649 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13491, Invalid=22419, Unknown=0, NotChecked=0, Total=35910 [2018-07-25 13:26:51,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2018-07-25 13:26:51,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2018-07-25 13:26:51,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2018-07-25 13:26:51,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 378 transitions. [2018-07-25 13:26:51,942 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 378 transitions. Word has length 372 [2018-07-25 13:26:51,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:51,943 INFO L472 AbstractCegarLoop]: Abstraction has 377 states and 378 transitions. [2018-07-25 13:26:51,943 INFO L473 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-07-25 13:26:51,943 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 378 transitions. [2018-07-25 13:26:51,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2018-07-25 13:26:51,944 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:51,944 INFO L354 BasicCegarLoop]: trace histogram [94, 93, 93, 92, 1, 1, 1, 1] [2018-07-25 13:26:51,944 INFO L415 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:51,944 INFO L82 PathProgramCache]: Analyzing trace with hash -148853461, now seen corresponding path program 139 times [2018-07-25 13:26:51,944 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:52,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:53,093 INFO L134 CoverageAnalysis]: Checked inductivity of 17298 backedges. 8742 proven. 8556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:53,094 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:53,094 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [187] total 187 [2018-07-25 13:26:53,094 INFO L451 AbstractCegarLoop]: Interpolant automaton has 188 states [2018-07-25 13:26:53,095 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2018-07-25 13:26:53,096 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8929, Invalid=26227, Unknown=0, NotChecked=0, Total=35156 [2018-07-25 13:26:53,096 INFO L87 Difference]: Start difference. First operand 377 states and 378 transitions. Second operand 188 states. [2018-07-25 13:26:54,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:54,236 INFO L93 Difference]: Finished difference Result 569 states and 571 transitions. [2018-07-25 13:26:54,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2018-07-25 13:26:54,237 INFO L78 Accepts]: Start accepts. Automaton has 188 states. Word has length 376 [2018-07-25 13:26:54,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:54,237 INFO L225 Difference]: With dead ends: 569 [2018-07-25 13:26:54,237 INFO L226 Difference]: Without dead ends: 379 [2018-07-25 13:26:54,241 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 278 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12742 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=21855, Invalid=56265, Unknown=0, NotChecked=0, Total=78120 [2018-07-25 13:26:54,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2018-07-25 13:26:54,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2018-07-25 13:26:54,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-07-25 13:26:54,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 380 transitions. [2018-07-25 13:26:54,267 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 380 transitions. Word has length 376 [2018-07-25 13:26:54,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:54,267 INFO L472 AbstractCegarLoop]: Abstraction has 379 states and 380 transitions. [2018-07-25 13:26:54,267 INFO L473 AbstractCegarLoop]: Interpolant automaton has 188 states. [2018-07-25 13:26:54,268 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 380 transitions. [2018-07-25 13:26:54,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-07-25 13:26:54,269 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:54,269 INFO L354 BasicCegarLoop]: trace histogram [94, 94, 93, 93, 1, 1, 1, 1] [2018-07-25 13:26:54,269 INFO L415 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:54,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1356655577, now seen corresponding path program 140 times [2018-07-25 13:26:54,269 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:54,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:55,383 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 8742 proven. 8742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:55,384 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:55,384 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [188] total 188 [2018-07-25 13:26:55,384 INFO L451 AbstractCegarLoop]: Interpolant automaton has 189 states [2018-07-25 13:26:55,385 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 189 interpolants. [2018-07-25 13:26:55,387 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9024, Invalid=26508, Unknown=0, NotChecked=0, Total=35532 [2018-07-25 13:26:55,387 INFO L87 Difference]: Start difference. First operand 379 states and 380 transitions. Second operand 189 states. [2018-07-25 13:26:56,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:56,646 INFO L93 Difference]: Finished difference Result 571 states and 573 transitions. [2018-07-25 13:26:56,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2018-07-25 13:26:56,646 INFO L78 Accepts]: Start accepts. Automaton has 189 states. Word has length 378 [2018-07-25 13:26:56,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:56,647 INFO L225 Difference]: With dead ends: 571 [2018-07-25 13:26:56,647 INFO L226 Difference]: Without dead ends: 381 [2018-07-25 13:26:56,657 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 280 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12835 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=22230, Invalid=57012, Unknown=0, NotChecked=0, Total=79242 [2018-07-25 13:26:56,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2018-07-25 13:26:56,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2018-07-25 13:26:56,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2018-07-25 13:26:56,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 382 transitions. [2018-07-25 13:26:56,703 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 382 transitions. Word has length 378 [2018-07-25 13:26:56,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:56,703 INFO L472 AbstractCegarLoop]: Abstraction has 381 states and 382 transitions. [2018-07-25 13:26:56,703 INFO L473 AbstractCegarLoop]: Interpolant automaton has 189 states. [2018-07-25 13:26:56,703 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 382 transitions. [2018-07-25 13:26:56,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2018-07-25 13:26:56,705 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:56,705 INFO L354 BasicCegarLoop]: trace histogram [95, 94, 94, 93, 1, 1, 1, 1] [2018-07-25 13:26:56,705 INFO L415 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:56,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1881648163, now seen corresponding path program 141 times [2018-07-25 13:26:56,706 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:57,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:57,534 INFO L134 CoverageAnalysis]: Checked inductivity of 17672 backedges. 8930 proven. 8742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:57,535 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:57,535 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98] total 98 [2018-07-25 13:26:57,535 INFO L451 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-07-25 13:26:57,536 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-07-25 13:26:57,536 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4755, Invalid=4947, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 13:26:57,536 INFO L87 Difference]: Start difference. First operand 381 states and 382 transitions. Second operand 99 states. [2018-07-25 13:26:57,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:57,925 INFO L93 Difference]: Finished difference Result 387 states and 389 transitions. [2018-07-25 13:26:57,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2018-07-25 13:26:57,925 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 380 [2018-07-25 13:26:57,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:57,926 INFO L225 Difference]: With dead ends: 387 [2018-07-25 13:26:57,926 INFO L226 Difference]: Without dead ends: 385 [2018-07-25 13:26:57,928 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9025 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14066, Invalid=23376, Unknown=0, NotChecked=0, Total=37442 [2018-07-25 13:26:57,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2018-07-25 13:26:57,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 385. [2018-07-25 13:26:57,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2018-07-25 13:26:57,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 386 transitions. [2018-07-25 13:26:57,956 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 386 transitions. Word has length 380 [2018-07-25 13:26:57,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:57,956 INFO L472 AbstractCegarLoop]: Abstraction has 385 states and 386 transitions. [2018-07-25 13:26:57,956 INFO L473 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-07-25 13:26:57,957 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 386 transitions. [2018-07-25 13:26:57,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2018-07-25 13:26:57,958 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:57,958 INFO L354 BasicCegarLoop]: trace histogram [96, 95, 95, 94, 1, 1, 1, 1] [2018-07-25 13:26:57,958 INFO L415 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:57,958 INFO L82 PathProgramCache]: Analyzing trace with hash -2124462825, now seen corresponding path program 142 times [2018-07-25 13:26:57,958 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:58,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:59,156 INFO L134 CoverageAnalysis]: Checked inductivity of 18050 backedges. 9120 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:59,156 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:59,157 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [191] total 191 [2018-07-25 13:26:59,157 INFO L451 AbstractCegarLoop]: Interpolant automaton has 192 states [2018-07-25 13:26:59,158 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2018-07-25 13:26:59,159 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9311, Invalid=27361, Unknown=0, NotChecked=0, Total=36672 [2018-07-25 13:26:59,160 INFO L87 Difference]: Start difference. First operand 385 states and 386 transitions. Second operand 192 states. [2018-07-25 13:27:00,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:00,478 INFO L93 Difference]: Finished difference Result 581 states and 583 transitions. [2018-07-25 13:27:00,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2018-07-25 13:27:00,479 INFO L78 Accepts]: Start accepts. Automaton has 192 states. Word has length 384 [2018-07-25 13:27:00,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:00,479 INFO L225 Difference]: With dead ends: 581 [2018-07-25 13:27:00,479 INFO L226 Difference]: Without dead ends: 387 [2018-07-25 13:27:00,485 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13301 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=22800, Invalid=58710, Unknown=0, NotChecked=0, Total=81510 [2018-07-25 13:27:00,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2018-07-25 13:27:00,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2018-07-25 13:27:00,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2018-07-25 13:27:00,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 388 transitions. [2018-07-25 13:27:00,513 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 388 transitions. Word has length 384 [2018-07-25 13:27:00,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:00,513 INFO L472 AbstractCegarLoop]: Abstraction has 387 states and 388 transitions. [2018-07-25 13:27:00,513 INFO L473 AbstractCegarLoop]: Interpolant automaton has 192 states. [2018-07-25 13:27:00,513 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 388 transitions. [2018-07-25 13:27:00,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2018-07-25 13:27:00,514 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:00,514 INFO L354 BasicCegarLoop]: trace histogram [96, 96, 95, 95, 1, 1, 1, 1] [2018-07-25 13:27:00,515 INFO L415 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:00,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1324937235, now seen corresponding path program 143 times [2018-07-25 13:27:00,515 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:00,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:01,743 INFO L134 CoverageAnalysis]: Checked inductivity of 18240 backedges. 9120 proven. 9120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:27:01,743 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:01,743 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [192] total 192 [2018-07-25 13:27:01,743 INFO L451 AbstractCegarLoop]: Interpolant automaton has 193 states [2018-07-25 13:27:01,745 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2018-07-25 13:27:01,746 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9408, Invalid=27648, Unknown=0, NotChecked=0, Total=37056 [2018-07-25 13:27:01,746 INFO L87 Difference]: Start difference. First operand 387 states and 388 transitions. Second operand 193 states. [2018-07-25 13:27:03,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:03,116 INFO L93 Difference]: Finished difference Result 583 states and 585 transitions. [2018-07-25 13:27:03,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2018-07-25 13:27:03,116 INFO L78 Accepts]: Start accepts. Automaton has 193 states. Word has length 386 [2018-07-25 13:27:03,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:03,117 INFO L225 Difference]: With dead ends: 583 [2018-07-25 13:27:03,117 INFO L226 Difference]: Without dead ends: 389 [2018-07-25 13:27:03,122 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 286 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13396 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=23183, Invalid=59473, Unknown=0, NotChecked=0, Total=82656 [2018-07-25 13:27:03,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2018-07-25 13:27:03,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 389. [2018-07-25 13:27:03,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2018-07-25 13:27:03,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 390 transitions. [2018-07-25 13:27:03,171 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 390 transitions. Word has length 386 [2018-07-25 13:27:03,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:03,171 INFO L472 AbstractCegarLoop]: Abstraction has 389 states and 390 transitions. [2018-07-25 13:27:03,171 INFO L473 AbstractCegarLoop]: Interpolant automaton has 193 states. [2018-07-25 13:27:03,172 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 390 transitions. [2018-07-25 13:27:03,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2018-07-25 13:27:03,174 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:03,174 INFO L354 BasicCegarLoop]: trace histogram [97, 96, 96, 95, 1, 1, 1, 1] [2018-07-25 13:27:03,175 INFO L415 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:03,175 INFO L82 PathProgramCache]: Analyzing trace with hash 483642383, now seen corresponding path program 144 times [2018-07-25 13:27:03,175 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:03,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:04,070 INFO L134 CoverageAnalysis]: Checked inductivity of 18432 backedges. 9312 proven. 9120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:27:04,071 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:04,071 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100] total 100 [2018-07-25 13:27:04,071 INFO L451 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-07-25 13:27:04,072 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-07-25 13:27:04,072 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4952, Invalid=5148, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 13:27:04,072 INFO L87 Difference]: Start difference. First operand 389 states and 390 transitions. Second operand 101 states. [2018-07-25 13:27:04,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:04,467 INFO L93 Difference]: Finished difference Result 395 states and 397 transitions. [2018-07-25 13:27:04,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2018-07-25 13:27:04,467 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 388 [2018-07-25 13:27:04,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:04,468 INFO L225 Difference]: With dead ends: 395 [2018-07-25 13:27:04,468 INFO L226 Difference]: Without dead ends: 393 [2018-07-25 13:27:04,470 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9409 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14653, Invalid=24353, Unknown=0, NotChecked=0, Total=39006 [2018-07-25 13:27:04,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2018-07-25 13:27:04,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2018-07-25 13:27:04,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2018-07-25 13:27:04,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 394 transitions. [2018-07-25 13:27:04,499 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 394 transitions. Word has length 388 [2018-07-25 13:27:04,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:04,499 INFO L472 AbstractCegarLoop]: Abstraction has 393 states and 394 transitions. [2018-07-25 13:27:04,499 INFO L473 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-07-25 13:27:04,499 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 394 transitions. [2018-07-25 13:27:04,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2018-07-25 13:27:04,500 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:04,500 INFO L354 BasicCegarLoop]: trace histogram [98, 97, 97, 96, 1, 1, 1, 1] [2018-07-25 13:27:04,501 INFO L415 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:04,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1176400125, now seen corresponding path program 145 times [2018-07-25 13:27:04,501 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:04,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:05,788 INFO L134 CoverageAnalysis]: Checked inductivity of 18818 backedges. 9506 proven. 9312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:27:05,788 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:05,788 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [195] total 195 [2018-07-25 13:27:05,788 INFO L451 AbstractCegarLoop]: Interpolant automaton has 196 states [2018-07-25 13:27:05,790 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2018-07-25 13:27:05,793 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9701, Invalid=28519, Unknown=0, NotChecked=0, Total=38220 [2018-07-25 13:27:05,793 INFO L87 Difference]: Start difference. First operand 393 states and 394 transitions. Second operand 196 states. [2018-07-25 13:27:07,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:07,199 INFO L93 Difference]: Finished difference Result 593 states and 595 transitions. [2018-07-25 13:27:07,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2018-07-25 13:27:07,199 INFO L78 Accepts]: Start accepts. Automaton has 196 states. Word has length 392 [2018-07-25 13:27:07,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:07,200 INFO L225 Difference]: With dead ends: 593 [2018-07-25 13:27:07,200 INFO L226 Difference]: Without dead ends: 395 [2018-07-25 13:27:07,205 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 290 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13872 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=23765, Invalid=61207, Unknown=0, NotChecked=0, Total=84972 [2018-07-25 13:27:07,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2018-07-25 13:27:07,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2018-07-25 13:27:07,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2018-07-25 13:27:07,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 396 transitions. [2018-07-25 13:27:07,234 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 396 transitions. Word has length 392 [2018-07-25 13:27:07,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:07,235 INFO L472 AbstractCegarLoop]: Abstraction has 395 states and 396 transitions. [2018-07-25 13:27:07,235 INFO L473 AbstractCegarLoop]: Interpolant automaton has 196 states. [2018-07-25 13:27:07,235 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 396 transitions. [2018-07-25 13:27:07,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2018-07-25 13:27:07,236 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:07,236 INFO L354 BasicCegarLoop]: trace histogram [98, 98, 97, 97, 1, 1, 1, 1] [2018-07-25 13:27:07,236 INFO L415 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:07,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1133411839, now seen corresponding path program 146 times [2018-07-25 13:27:07,236 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:07,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:08,545 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 9506 proven. 9506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:27:08,546 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:08,546 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [196] total 196 [2018-07-25 13:27:08,546 INFO L451 AbstractCegarLoop]: Interpolant automaton has 197 states [2018-07-25 13:27:08,547 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2018-07-25 13:27:08,548 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9800, Invalid=28812, Unknown=0, NotChecked=0, Total=38612 [2018-07-25 13:27:08,548 INFO L87 Difference]: Start difference. First operand 395 states and 396 transitions. Second operand 197 states. [2018-07-25 13:27:09,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:09,749 INFO L93 Difference]: Finished difference Result 595 states and 597 transitions. [2018-07-25 13:27:09,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2018-07-25 13:27:09,749 INFO L78 Accepts]: Start accepts. Automaton has 197 states. Word has length 394 [2018-07-25 13:27:09,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:09,750 INFO L225 Difference]: With dead ends: 595 [2018-07-25 13:27:09,750 INFO L226 Difference]: Without dead ends: 397 [2018-07-25 13:27:09,754 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 292 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13969 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=24156, Invalid=61986, Unknown=0, NotChecked=0, Total=86142 [2018-07-25 13:27:09,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2018-07-25 13:27:09,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 397. [2018-07-25 13:27:09,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2018-07-25 13:27:09,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 398 transitions. [2018-07-25 13:27:09,791 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 398 transitions. Word has length 394 [2018-07-25 13:27:09,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:09,792 INFO L472 AbstractCegarLoop]: Abstraction has 397 states and 398 transitions. [2018-07-25 13:27:09,792 INFO L473 AbstractCegarLoop]: Interpolant automaton has 197 states. [2018-07-25 13:27:09,792 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 398 transitions. [2018-07-25 13:27:09,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2018-07-25 13:27:09,793 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:09,794 INFO L354 BasicCegarLoop]: trace histogram [99, 98, 98, 97, 1, 1, 1, 1] [2018-07-25 13:27:09,794 INFO L415 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:09,794 INFO L82 PathProgramCache]: Analyzing trace with hash 364617211, now seen corresponding path program 147 times [2018-07-25 13:27:09,794 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:10,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:10,566 INFO L134 CoverageAnalysis]: Checked inductivity of 19208 backedges. 9702 proven. 9506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:27:10,566 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:10,566 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102] total 102 [2018-07-25 13:27:10,567 INFO L451 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-07-25 13:27:10,567 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-07-25 13:27:10,568 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 13:27:10,568 INFO L87 Difference]: Start difference. First operand 397 states and 398 transitions. Second operand 103 states. [2018-07-25 13:27:11,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:11,021 INFO L93 Difference]: Finished difference Result 403 states and 405 transitions. [2018-07-25 13:27:11,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2018-07-25 13:27:11,021 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 396 [2018-07-25 13:27:11,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:11,022 INFO L225 Difference]: With dead ends: 403 [2018-07-25 13:27:11,022 INFO L226 Difference]: Without dead ends: 401 [2018-07-25 13:27:11,024 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9801 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15252, Invalid=25350, Unknown=0, NotChecked=0, Total=40602 [2018-07-25 13:27:11,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2018-07-25 13:27:11,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2018-07-25 13:27:11,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2018-07-25 13:27:11,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 402 transitions. [2018-07-25 13:27:11,063 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 402 transitions. Word has length 396 [2018-07-25 13:27:11,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:11,064 INFO L472 AbstractCegarLoop]: Abstraction has 401 states and 402 transitions. [2018-07-25 13:27:11,064 INFO L473 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-07-25 13:27:11,064 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 402 transitions. [2018-07-25 13:27:11,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2018-07-25 13:27:11,065 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:11,065 INFO L354 BasicCegarLoop]: trace histogram [100, 99, 99, 98, 1, 1, 1, 1] [2018-07-25 13:27:11,065 INFO L415 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:11,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1970703087, now seen corresponding path program 148 times [2018-07-25 13:27:11,065 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:11,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:12,410 INFO L134 CoverageAnalysis]: Checked inductivity of 19602 backedges. 9900 proven. 9702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:27:12,410 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:12,410 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [199] total 199 [2018-07-25 13:27:12,411 INFO L451 AbstractCegarLoop]: Interpolant automaton has 200 states [2018-07-25 13:27:12,412 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2018-07-25 13:27:12,415 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10099, Invalid=29701, Unknown=0, NotChecked=0, Total=39800 [2018-07-25 13:27:12,415 INFO L87 Difference]: Start difference. First operand 401 states and 402 transitions. Second operand 200 states. [2018-07-25 13:27:13,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:13,778 INFO L93 Difference]: Finished difference Result 605 states and 607 transitions. [2018-07-25 13:27:13,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2018-07-25 13:27:13,778 INFO L78 Accepts]: Start accepts. Automaton has 200 states. Word has length 400 [2018-07-25 13:27:13,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:13,779 INFO L225 Difference]: With dead ends: 605 [2018-07-25 13:27:13,779 INFO L226 Difference]: Without dead ends: 403 [2018-07-25 13:27:13,787 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 296 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14455 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=24750, Invalid=63756, Unknown=0, NotChecked=0, Total=88506 [2018-07-25 13:27:13,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2018-07-25 13:27:13,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2018-07-25 13:27:13,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2018-07-25 13:27:13,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 404 transitions. [2018-07-25 13:27:13,817 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 404 transitions. Word has length 400 [2018-07-25 13:27:13,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:13,817 INFO L472 AbstractCegarLoop]: Abstraction has 403 states and 404 transitions. [2018-07-25 13:27:13,817 INFO L473 AbstractCegarLoop]: Interpolant automaton has 200 states. [2018-07-25 13:27:13,818 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 404 transitions. [2018-07-25 13:27:13,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2018-07-25 13:27:13,819 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:13,819 INFO L354 BasicCegarLoop]: trace histogram [100, 100, 99, 99, 1, 1, 1, 1] [2018-07-25 13:27:13,819 INFO L415 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:13,819 INFO L82 PathProgramCache]: Analyzing trace with hash 632471019, now seen corresponding path program 149 times [2018-07-25 13:27:13,819 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:14,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:15,224 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 9900 proven. 9900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:27:15,224 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:15,224 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [200] total 200 [2018-07-25 13:27:15,224 INFO L451 AbstractCegarLoop]: Interpolant automaton has 201 states [2018-07-25 13:27:15,225 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 201 interpolants. [2018-07-25 13:27:15,226 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10200, Invalid=30000, Unknown=0, NotChecked=0, Total=40200 [2018-07-25 13:27:15,226 INFO L87 Difference]: Start difference. First operand 403 states and 404 transitions. Second operand 201 states. [2018-07-25 13:27:16,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:16,399 INFO L93 Difference]: Finished difference Result 607 states and 609 transitions. [2018-07-25 13:27:16,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2018-07-25 13:27:16,399 INFO L78 Accepts]: Start accepts. Automaton has 201 states. Word has length 402 [2018-07-25 13:27:16,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:16,400 INFO L225 Difference]: With dead ends: 607 [2018-07-25 13:27:16,400 INFO L226 Difference]: Without dead ends: 405 [2018-07-25 13:27:16,404 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 298 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14554 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=25149, Invalid=64551, Unknown=0, NotChecked=0, Total=89700 [2018-07-25 13:27:16,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2018-07-25 13:27:16,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 405. [2018-07-25 13:27:16,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2018-07-25 13:27:16,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 406 transitions. [2018-07-25 13:27:16,434 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 406 transitions. Word has length 402 [2018-07-25 13:27:16,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:16,434 INFO L472 AbstractCegarLoop]: Abstraction has 405 states and 406 transitions. [2018-07-25 13:27:16,434 INFO L473 AbstractCegarLoop]: Interpolant automaton has 201 states. [2018-07-25 13:27:16,434 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 406 transitions. [2018-07-25 13:27:16,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2018-07-25 13:27:16,435 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:16,435 INFO L354 BasicCegarLoop]: trace histogram [101, 100, 100, 99, 1, 1, 1, 1] [2018-07-25 13:27:16,435 INFO L415 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:16,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1213324825, now seen corresponding path program 150 times [2018-07-25 13:27:16,436 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:16,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:17,261 INFO L134 CoverageAnalysis]: Checked inductivity of 20000 backedges. 10100 proven. 9900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:27:17,262 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:17,262 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104] total 104 [2018-07-25 13:27:17,262 INFO L451 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-07-25 13:27:17,262 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-07-25 13:27:17,263 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5358, Invalid=5562, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 13:27:17,263 INFO L87 Difference]: Start difference. First operand 405 states and 406 transitions. Second operand 105 states. [2018-07-25 13:27:17,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:17,706 INFO L93 Difference]: Finished difference Result 411 states and 413 transitions. [2018-07-25 13:27:17,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2018-07-25 13:27:17,706 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 404 [2018-07-25 13:27:17,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:17,707 INFO L225 Difference]: With dead ends: 411 [2018-07-25 13:27:17,707 INFO L226 Difference]: Without dead ends: 409 [2018-07-25 13:27:17,710 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10201 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15863, Invalid=26367, Unknown=0, NotChecked=0, Total=42230 [2018-07-25 13:27:17,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2018-07-25 13:27:17,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 409. [2018-07-25 13:27:17,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2018-07-25 13:27:17,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 410 transitions. [2018-07-25 13:27:17,764 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 410 transitions. Word has length 404 [2018-07-25 13:27:17,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:17,764 INFO L472 AbstractCegarLoop]: Abstraction has 409 states and 410 transitions. [2018-07-25 13:27:17,764 INFO L473 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-07-25 13:27:17,764 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 410 transitions. [2018-07-25 13:27:17,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-07-25 13:27:17,766 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:17,766 INFO L354 BasicCegarLoop]: trace histogram [102, 101, 101, 100, 1, 1, 1, 1] [2018-07-25 13:27:17,767 INFO L415 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:17,767 INFO L82 PathProgramCache]: Analyzing trace with hash 292370651, now seen corresponding path program 151 times [2018-07-25 13:27:17,767 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:18,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:19,309 INFO L134 CoverageAnalysis]: Checked inductivity of 20402 backedges. 10302 proven. 10100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:27:19,309 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:19,310 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [203] total 203 [2018-07-25 13:27:19,310 INFO L451 AbstractCegarLoop]: Interpolant automaton has 204 states [2018-07-25 13:27:19,311 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2018-07-25 13:27:19,312 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10505, Invalid=30907, Unknown=0, NotChecked=0, Total=41412 [2018-07-25 13:27:19,312 INFO L87 Difference]: Start difference. First operand 409 states and 410 transitions. Second operand 204 states. [2018-07-25 13:27:20,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:20,632 INFO L93 Difference]: Finished difference Result 617 states and 619 transitions. [2018-07-25 13:27:20,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2018-07-25 13:27:20,632 INFO L78 Accepts]: Start accepts. Automaton has 204 states. Word has length 408 [2018-07-25 13:27:20,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:20,633 INFO L225 Difference]: With dead ends: 617 [2018-07-25 13:27:20,633 INFO L226 Difference]: Without dead ends: 411 [2018-07-25 13:27:20,637 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 302 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15050 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=25755, Invalid=66357, Unknown=0, NotChecked=0, Total=92112 [2018-07-25 13:27:20,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2018-07-25 13:27:20,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 411. [2018-07-25 13:27:20,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2018-07-25 13:27:20,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 412 transitions. [2018-07-25 13:27:20,668 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 412 transitions. Word has length 408 [2018-07-25 13:27:20,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:20,669 INFO L472 AbstractCegarLoop]: Abstraction has 411 states and 412 transitions. [2018-07-25 13:27:20,669 INFO L473 AbstractCegarLoop]: Interpolant automaton has 204 states. [2018-07-25 13:27:20,669 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 412 transitions. [2018-07-25 13:27:20,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2018-07-25 13:27:20,670 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:20,670 INFO L354 BasicCegarLoop]: trace histogram [102, 102, 101, 101, 1, 1, 1, 1] [2018-07-25 13:27:20,670 INFO L415 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:20,670 INFO L82 PathProgramCache]: Analyzing trace with hash 380940247, now seen corresponding path program 152 times [2018-07-25 13:27:20,670 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:21,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:22,088 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 10302 proven. 10302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:27:22,089 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:22,089 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [204] total 204 [2018-07-25 13:27:22,089 INFO L451 AbstractCegarLoop]: Interpolant automaton has 205 states [2018-07-25 13:27:22,091 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 205 interpolants. [2018-07-25 13:27:22,093 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10608, Invalid=31212, Unknown=0, NotChecked=0, Total=41820 [2018-07-25 13:27:22,093 INFO L87 Difference]: Start difference. First operand 411 states and 412 transitions. Second operand 205 states. [2018-07-25 13:27:23,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:23,647 INFO L93 Difference]: Finished difference Result 619 states and 621 transitions. [2018-07-25 13:27:23,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2018-07-25 13:27:23,647 INFO L78 Accepts]: Start accepts. Automaton has 205 states. Word has length 410 [2018-07-25 13:27:23,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:23,648 INFO L225 Difference]: With dead ends: 619 [2018-07-25 13:27:23,648 INFO L226 Difference]: Without dead ends: 413 [2018-07-25 13:27:23,651 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 304 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15151 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=26162, Invalid=67168, Unknown=0, NotChecked=0, Total=93330 [2018-07-25 13:27:23,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2018-07-25 13:27:23,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 413. [2018-07-25 13:27:23,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2018-07-25 13:27:23,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 414 transitions. [2018-07-25 13:27:23,683 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 414 transitions. Word has length 410 [2018-07-25 13:27:23,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:23,683 INFO L472 AbstractCegarLoop]: Abstraction has 413 states and 414 transitions. [2018-07-25 13:27:23,683 INFO L473 AbstractCegarLoop]: Interpolant automaton has 205 states. [2018-07-25 13:27:23,683 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 414 transitions. [2018-07-25 13:27:23,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2018-07-25 13:27:23,684 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:23,684 INFO L354 BasicCegarLoop]: trace histogram [103, 102, 102, 101, 1, 1, 1, 1] [2018-07-25 13:27:23,685 INFO L415 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:23,685 INFO L82 PathProgramCache]: Analyzing trace with hash -403023917, now seen corresponding path program 153 times [2018-07-25 13:27:23,685 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:24,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:24,544 INFO L134 CoverageAnalysis]: Checked inductivity of 20808 backedges. 10506 proven. 10302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:27:24,545 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:24,545 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106] total 106 [2018-07-25 13:27:24,545 INFO L451 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-07-25 13:27:24,546 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-07-25 13:27:24,546 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5567, Invalid=5775, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 13:27:24,546 INFO L87 Difference]: Start difference. First operand 413 states and 414 transitions. Second operand 107 states. [2018-07-25 13:27:24,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:24,985 INFO L93 Difference]: Finished difference Result 419 states and 421 transitions. [2018-07-25 13:27:24,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2018-07-25 13:27:24,985 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 412 [2018-07-25 13:27:24,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:24,986 INFO L225 Difference]: With dead ends: 419 [2018-07-25 13:27:24,986 INFO L226 Difference]: Without dead ends: 417 [2018-07-25 13:27:24,988 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10609 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=16486, Invalid=27404, Unknown=0, NotChecked=0, Total=43890 [2018-07-25 13:27:24,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2018-07-25 13:27:25,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 417. [2018-07-25 13:27:25,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2018-07-25 13:27:25,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 418 transitions. [2018-07-25 13:27:25,020 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 418 transitions. Word has length 412 [2018-07-25 13:27:25,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:25,020 INFO L472 AbstractCegarLoop]: Abstraction has 417 states and 418 transitions. [2018-07-25 13:27:25,020 INFO L473 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-07-25 13:27:25,020 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 418 transitions. [2018-07-25 13:27:25,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2018-07-25 13:27:25,021 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:25,022 INFO L354 BasicCegarLoop]: trace histogram [104, 103, 103, 102, 1, 1, 1, 1] [2018-07-25 13:27:25,022 INFO L415 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:25,022 INFO L82 PathProgramCache]: Analyzing trace with hash 865376455, now seen corresponding path program 154 times [2018-07-25 13:27:25,022 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:25,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:26,502 INFO L134 CoverageAnalysis]: Checked inductivity of 21218 backedges. 10712 proven. 10506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:27:26,502 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:26,502 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [207] total 207 [2018-07-25 13:27:26,502 INFO L451 AbstractCegarLoop]: Interpolant automaton has 208 states [2018-07-25 13:27:26,503 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 208 interpolants. [2018-07-25 13:27:26,505 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10919, Invalid=32137, Unknown=0, NotChecked=0, Total=43056 [2018-07-25 13:27:26,506 INFO L87 Difference]: Start difference. First operand 417 states and 418 transitions. Second operand 208 states. [2018-07-25 13:27:27,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:27,965 INFO L93 Difference]: Finished difference Result 629 states and 631 transitions. [2018-07-25 13:27:27,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2018-07-25 13:27:27,965 INFO L78 Accepts]: Start accepts. Automaton has 208 states. Word has length 416 [2018-07-25 13:27:27,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:27,966 INFO L225 Difference]: With dead ends: 629 [2018-07-25 13:27:27,966 INFO L226 Difference]: Without dead ends: 419 [2018-07-25 13:27:27,970 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 308 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15657 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=26780, Invalid=69010, Unknown=0, NotChecked=0, Total=95790 [2018-07-25 13:27:27,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2018-07-25 13:27:28,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 419. [2018-07-25 13:27:28,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2018-07-25 13:27:28,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 420 transitions. [2018-07-25 13:27:28,002 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 420 transitions. Word has length 416 [2018-07-25 13:27:28,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:28,003 INFO L472 AbstractCegarLoop]: Abstraction has 419 states and 420 transitions. [2018-07-25 13:27:28,003 INFO L473 AbstractCegarLoop]: Interpolant automaton has 208 states. [2018-07-25 13:27:28,003 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 420 transitions. [2018-07-25 13:27:28,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2018-07-25 13:27:28,004 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:28,004 INFO L354 BasicCegarLoop]: trace histogram [104, 104, 103, 103, 1, 1, 1, 1] [2018-07-25 13:27:28,004 INFO L415 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:28,004 INFO L82 PathProgramCache]: Analyzing trace with hash -2140974141, now seen corresponding path program 155 times [2018-07-25 13:27:28,004 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:28,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:29,472 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 10712 proven. 10712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:27:29,473 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:29,473 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [208] total 208 [2018-07-25 13:27:29,473 INFO L451 AbstractCegarLoop]: Interpolant automaton has 209 states [2018-07-25 13:27:29,474 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 209 interpolants. [2018-07-25 13:27:29,477 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11024, Invalid=32448, Unknown=0, NotChecked=0, Total=43472 [2018-07-25 13:27:29,477 INFO L87 Difference]: Start difference. First operand 419 states and 420 transitions. Second operand 209 states. [2018-07-25 13:27:30,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:30,885 INFO L93 Difference]: Finished difference Result 631 states and 633 transitions. [2018-07-25 13:27:30,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2018-07-25 13:27:30,885 INFO L78 Accepts]: Start accepts. Automaton has 209 states. Word has length 418 [2018-07-25 13:27:30,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:30,886 INFO L225 Difference]: With dead ends: 631 [2018-07-25 13:27:30,886 INFO L226 Difference]: Without dead ends: 421 [2018-07-25 13:27:30,892 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 310 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15760 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=27195, Invalid=69837, Unknown=0, NotChecked=0, Total=97032 [2018-07-25 13:27:30,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2018-07-25 13:27:30,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2018-07-25 13:27:30,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2018-07-25 13:27:30,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 422 transitions. [2018-07-25 13:27:30,930 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 422 transitions. Word has length 418 [2018-07-25 13:27:30,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:30,930 INFO L472 AbstractCegarLoop]: Abstraction has 421 states and 422 transitions. [2018-07-25 13:27:30,930 INFO L473 AbstractCegarLoop]: Interpolant automaton has 209 states. [2018-07-25 13:27:30,930 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 422 transitions. [2018-07-25 13:27:30,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2018-07-25 13:27:30,931 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:30,931 INFO L354 BasicCegarLoop]: trace histogram [105, 104, 104, 103, 1, 1, 1, 1] [2018-07-25 13:27:30,932 INFO L415 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:30,932 INFO L82 PathProgramCache]: Analyzing trace with hash -730906689, now seen corresponding path program 156 times [2018-07-25 13:27:30,932 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:31,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:31,850 INFO L134 CoverageAnalysis]: Checked inductivity of 21632 backedges. 10920 proven. 10712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:27:31,850 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:31,850 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108] total 108 [2018-07-25 13:27:31,850 INFO L451 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-07-25 13:27:31,851 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-07-25 13:27:31,851 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5780, Invalid=5992, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 13:27:31,852 INFO L87 Difference]: Start difference. First operand 421 states and 422 transitions. Second operand 109 states. [2018-07-25 13:27:32,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:32,351 INFO L93 Difference]: Finished difference Result 427 states and 429 transitions. [2018-07-25 13:27:32,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2018-07-25 13:27:32,351 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 420 [2018-07-25 13:27:32,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:32,352 INFO L225 Difference]: With dead ends: 427 [2018-07-25 13:27:32,352 INFO L226 Difference]: Without dead ends: 425 [2018-07-25 13:27:32,355 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11025 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17121, Invalid=28461, Unknown=0, NotChecked=0, Total=45582 [2018-07-25 13:27:32,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2018-07-25 13:27:32,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 425. [2018-07-25 13:27:32,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2018-07-25 13:27:32,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 426 transitions. [2018-07-25 13:27:32,412 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 426 transitions. Word has length 420 [2018-07-25 13:27:32,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:32,413 INFO L472 AbstractCegarLoop]: Abstraction has 425 states and 426 transitions. [2018-07-25 13:27:32,413 INFO L473 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-07-25 13:27:32,413 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 426 transitions. [2018-07-25 13:27:32,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-07-25 13:27:32,415 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:32,415 INFO L354 BasicCegarLoop]: trace histogram [106, 105, 105, 104, 1, 1, 1, 1] [2018-07-25 13:27:32,416 INFO L415 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:32,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1975801165, now seen corresponding path program 157 times [2018-07-25 13:27:32,416 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:32,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:34,017 INFO L134 CoverageAnalysis]: Checked inductivity of 22050 backedges. 11130 proven. 10920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:27:34,018 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:34,018 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [211] total 211 [2018-07-25 13:27:34,018 INFO L451 AbstractCegarLoop]: Interpolant automaton has 212 states [2018-07-25 13:27:34,019 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 212 interpolants. [2018-07-25 13:27:34,021 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11341, Invalid=33391, Unknown=0, NotChecked=0, Total=44732 [2018-07-25 13:27:34,021 INFO L87 Difference]: Start difference. First operand 425 states and 426 transitions. Second operand 212 states. [2018-07-25 13:27:35,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:35,755 INFO L93 Difference]: Finished difference Result 641 states and 643 transitions. [2018-07-25 13:27:35,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2018-07-25 13:27:35,755 INFO L78 Accepts]: Start accepts. Automaton has 212 states. Word has length 424 [2018-07-25 13:27:35,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:35,756 INFO L225 Difference]: With dead ends: 641 [2018-07-25 13:27:35,756 INFO L226 Difference]: Without dead ends: 427 [2018-07-25 13:27:35,762 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 314 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16276 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=27825, Invalid=71715, Unknown=0, NotChecked=0, Total=99540 [2018-07-25 13:27:35,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2018-07-25 13:27:35,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2018-07-25 13:27:35,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2018-07-25 13:27:35,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 428 transitions. [2018-07-25 13:27:35,796 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 428 transitions. Word has length 424 [2018-07-25 13:27:35,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:35,796 INFO L472 AbstractCegarLoop]: Abstraction has 427 states and 428 transitions. [2018-07-25 13:27:35,796 INFO L473 AbstractCegarLoop]: Interpolant automaton has 212 states. [2018-07-25 13:27:35,796 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 428 transitions. [2018-07-25 13:27:35,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2018-07-25 13:27:35,797 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:35,797 INFO L354 BasicCegarLoop]: trace histogram [106, 106, 105, 105, 1, 1, 1, 1] [2018-07-25 13:27:35,797 INFO L415 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:35,798 INFO L82 PathProgramCache]: Analyzing trace with hash -720524881, now seen corresponding path program 158 times [2018-07-25 13:27:35,798 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:36,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:37,399 INFO L134 CoverageAnalysis]: Checked inductivity of 22260 backedges. 11130 proven. 11130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:27:37,400 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:37,400 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [212] total 212 [2018-07-25 13:27:37,400 INFO L451 AbstractCegarLoop]: Interpolant automaton has 213 states [2018-07-25 13:27:37,401 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 213 interpolants. [2018-07-25 13:27:37,402 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11448, Invalid=33708, Unknown=0, NotChecked=0, Total=45156 [2018-07-25 13:27:37,402 INFO L87 Difference]: Start difference. First operand 427 states and 428 transitions. Second operand 213 states. [2018-07-25 13:27:39,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:39,065 INFO L93 Difference]: Finished difference Result 643 states and 645 transitions. [2018-07-25 13:27:39,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2018-07-25 13:27:39,065 INFO L78 Accepts]: Start accepts. Automaton has 213 states. Word has length 426 [2018-07-25 13:27:39,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:39,066 INFO L225 Difference]: With dead ends: 643 [2018-07-25 13:27:39,066 INFO L226 Difference]: Without dead ends: 429 [2018-07-25 13:27:39,070 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 316 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16381 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=28248, Invalid=72558, Unknown=0, NotChecked=0, Total=100806 [2018-07-25 13:27:39,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2018-07-25 13:27:39,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2018-07-25 13:27:39,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2018-07-25 13:27:39,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 430 transitions. [2018-07-25 13:27:39,104 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 430 transitions. Word has length 426 [2018-07-25 13:27:39,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:39,104 INFO L472 AbstractCegarLoop]: Abstraction has 429 states and 430 transitions. [2018-07-25 13:27:39,105 INFO L473 AbstractCegarLoop]: Interpolant automaton has 213 states. [2018-07-25 13:27:39,105 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 430 transitions. [2018-07-25 13:27:39,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2018-07-25 13:27:39,107 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:39,107 INFO L354 BasicCegarLoop]: trace histogram [107, 106, 106, 105, 1, 1, 1, 1] [2018-07-25 13:27:39,107 INFO L415 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:39,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1285826133, now seen corresponding path program 159 times [2018-07-25 13:27:39,107 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:39,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:40,074 INFO L134 CoverageAnalysis]: Checked inductivity of 22472 backedges. 11342 proven. 11130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:27:40,074 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:40,074 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110] total 110 [2018-07-25 13:27:40,075 INFO L451 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-07-25 13:27:40,075 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-07-25 13:27:40,076 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5997, Invalid=6213, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 13:27:40,076 INFO L87 Difference]: Start difference. First operand 429 states and 430 transitions. Second operand 111 states. [2018-07-25 13:27:40,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:40,571 INFO L93 Difference]: Finished difference Result 435 states and 437 transitions. [2018-07-25 13:27:40,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 217 states. [2018-07-25 13:27:40,571 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 428 [2018-07-25 13:27:40,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:40,572 INFO L225 Difference]: With dead ends: 435 [2018-07-25 13:27:40,572 INFO L226 Difference]: Without dead ends: 433 [2018-07-25 13:27:40,574 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11449 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17768, Invalid=29538, Unknown=0, NotChecked=0, Total=47306 [2018-07-25 13:27:40,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2018-07-25 13:27:40,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 433. [2018-07-25 13:27:40,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433 states. [2018-07-25 13:27:40,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 434 transitions. [2018-07-25 13:27:40,608 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 434 transitions. Word has length 428 [2018-07-25 13:27:40,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:40,608 INFO L472 AbstractCegarLoop]: Abstraction has 433 states and 434 transitions. [2018-07-25 13:27:40,608 INFO L473 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-07-25 13:27:40,609 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 434 transitions. [2018-07-25 13:27:40,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2018-07-25 13:27:40,610 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:40,611 INFO L354 BasicCegarLoop]: trace histogram [108, 107, 107, 106, 1, 1, 1, 1] [2018-07-25 13:27:40,611 INFO L415 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:40,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1942917473, now seen corresponding path program 160 times [2018-07-25 13:27:40,611 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:41,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:42,230 INFO L134 CoverageAnalysis]: Checked inductivity of 22898 backedges. 11556 proven. 11342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:27:42,231 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:42,231 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [215] total 215 [2018-07-25 13:27:42,231 INFO L451 AbstractCegarLoop]: Interpolant automaton has 216 states [2018-07-25 13:27:42,232 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2018-07-25 13:27:42,235 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11771, Invalid=34669, Unknown=0, NotChecked=0, Total=46440 [2018-07-25 13:27:42,235 INFO L87 Difference]: Start difference. First operand 433 states and 434 transitions. Second operand 216 states. [2018-07-25 13:27:44,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:44,084 INFO L93 Difference]: Finished difference Result 653 states and 655 transitions. [2018-07-25 13:27:44,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 215 states. [2018-07-25 13:27:44,084 INFO L78 Accepts]: Start accepts. Automaton has 216 states. Word has length 432 [2018-07-25 13:27:44,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:44,085 INFO L225 Difference]: With dead ends: 653 [2018-07-25 13:27:44,085 INFO L226 Difference]: Without dead ends: 435 [2018-07-25 13:27:44,091 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 320 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16907 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=28890, Invalid=74472, Unknown=0, NotChecked=0, Total=103362 [2018-07-25 13:27:44,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2018-07-25 13:27:44,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 435. [2018-07-25 13:27:44,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2018-07-25 13:27:44,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 436 transitions. [2018-07-25 13:27:44,125 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 436 transitions. Word has length 432 [2018-07-25 13:27:44,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:44,125 INFO L472 AbstractCegarLoop]: Abstraction has 435 states and 436 transitions. [2018-07-25 13:27:44,125 INFO L473 AbstractCegarLoop]: Interpolant automaton has 216 states. [2018-07-25 13:27:44,125 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 436 transitions. [2018-07-25 13:27:44,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2018-07-25 13:27:44,126 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:44,126 INFO L354 BasicCegarLoop]: trace histogram [108, 108, 107, 107, 1, 1, 1, 1] [2018-07-25 13:27:44,127 INFO L415 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:44,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1333965211, now seen corresponding path program 161 times [2018-07-25 13:27:44,127 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:44,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:45,782 INFO L134 CoverageAnalysis]: Checked inductivity of 23112 backedges. 11556 proven. 11556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:27:45,782 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:45,782 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [216] total 216 [2018-07-25 13:27:45,783 INFO L451 AbstractCegarLoop]: Interpolant automaton has 217 states [2018-07-25 13:27:45,784 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 217 interpolants. [2018-07-25 13:27:45,785 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11880, Invalid=34992, Unknown=0, NotChecked=0, Total=46872 [2018-07-25 13:27:45,786 INFO L87 Difference]: Start difference. First operand 435 states and 436 transitions. Second operand 217 states. [2018-07-25 13:27:47,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:47,088 INFO L93 Difference]: Finished difference Result 655 states and 657 transitions. [2018-07-25 13:27:47,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 217 states. [2018-07-25 13:27:47,088 INFO L78 Accepts]: Start accepts. Automaton has 217 states. Word has length 434 [2018-07-25 13:27:47,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:47,089 INFO L225 Difference]: With dead ends: 655 [2018-07-25 13:27:47,089 INFO L226 Difference]: Without dead ends: 437 [2018-07-25 13:27:47,094 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 322 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17014 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=29321, Invalid=75331, Unknown=0, NotChecked=0, Total=104652 [2018-07-25 13:27:47,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2018-07-25 13:27:47,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 437. [2018-07-25 13:27:47,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2018-07-25 13:27:47,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 438 transitions. [2018-07-25 13:27:47,128 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 438 transitions. Word has length 434 [2018-07-25 13:27:47,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:47,128 INFO L472 AbstractCegarLoop]: Abstraction has 437 states and 438 transitions. [2018-07-25 13:27:47,129 INFO L473 AbstractCegarLoop]: Interpolant automaton has 217 states. [2018-07-25 13:27:47,129 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 438 transitions. [2018-07-25 13:27:47,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2018-07-25 13:27:47,130 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:47,130 INFO L354 BasicCegarLoop]: trace histogram [109, 108, 108, 107, 1, 1, 1, 1] [2018-07-25 13:27:47,130 INFO L415 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:47,130 INFO L82 PathProgramCache]: Analyzing trace with hash -2087770729, now seen corresponding path program 162 times [2018-07-25 13:27:47,130 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:47,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:48,190 INFO L134 CoverageAnalysis]: Checked inductivity of 23328 backedges. 11772 proven. 11556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:27:48,190 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:48,190 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112] total 112 [2018-07-25 13:27:48,191 INFO L451 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-07-25 13:27:48,191 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-07-25 13:27:48,191 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6218, Invalid=6438, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 13:27:48,192 INFO L87 Difference]: Start difference. First operand 437 states and 438 transitions. Second operand 113 states. [2018-07-25 13:27:48,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:48,721 INFO L93 Difference]: Finished difference Result 443 states and 445 transitions. [2018-07-25 13:27:48,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 221 states. [2018-07-25 13:27:48,721 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 436 [2018-07-25 13:27:48,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:48,722 INFO L225 Difference]: With dead ends: 443 [2018-07-25 13:27:48,722 INFO L226 Difference]: Without dead ends: 441 [2018-07-25 13:27:48,725 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11881 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18427, Invalid=30635, Unknown=0, NotChecked=0, Total=49062 [2018-07-25 13:27:48,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2018-07-25 13:27:48,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 441. [2018-07-25 13:27:48,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2018-07-25 13:27:48,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 442 transitions. [2018-07-25 13:27:48,760 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 442 transitions. Word has length 436 [2018-07-25 13:27:48,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:48,760 INFO L472 AbstractCegarLoop]: Abstraction has 441 states and 442 transitions. [2018-07-25 13:27:48,760 INFO L473 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-07-25 13:27:48,760 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 442 transitions. [2018-07-25 13:27:48,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2018-07-25 13:27:48,762 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:48,762 INFO L354 BasicCegarLoop]: trace histogram [110, 109, 109, 108, 1, 1, 1, 1] [2018-07-25 13:27:48,762 INFO L415 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:48,762 INFO L82 PathProgramCache]: Analyzing trace with hash 952427659, now seen corresponding path program 163 times [2018-07-25 13:27:48,762 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:49,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:50,535 INFO L134 CoverageAnalysis]: Checked inductivity of 23762 backedges. 11990 proven. 11772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:27:50,535 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:50,535 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [219] total 219 [2018-07-25 13:27:50,536 INFO L451 AbstractCegarLoop]: Interpolant automaton has 220 states [2018-07-25 13:27:50,537 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 220 interpolants. [2018-07-25 13:27:50,540 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12209, Invalid=35971, Unknown=0, NotChecked=0, Total=48180 [2018-07-25 13:27:50,541 INFO L87 Difference]: Start difference. First operand 441 states and 442 transitions. Second operand 220 states. [2018-07-25 13:27:52,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:52,229 INFO L93 Difference]: Finished difference Result 665 states and 667 transitions. [2018-07-25 13:27:52,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 219 states. [2018-07-25 13:27:52,230 INFO L78 Accepts]: Start accepts. Automaton has 220 states. Word has length 440 [2018-07-25 13:27:52,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:52,230 INFO L225 Difference]: With dead ends: 665 [2018-07-25 13:27:52,230 INFO L226 Difference]: Without dead ends: 443 [2018-07-25 13:27:52,237 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 326 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17550 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=29975, Invalid=77281, Unknown=0, NotChecked=0, Total=107256 [2018-07-25 13:27:52,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2018-07-25 13:27:52,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 443. [2018-07-25 13:27:52,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2018-07-25 13:27:52,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 444 transitions. [2018-07-25 13:27:52,276 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 444 transitions. Word has length 440 [2018-07-25 13:27:52,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:52,277 INFO L472 AbstractCegarLoop]: Abstraction has 443 states and 444 transitions. [2018-07-25 13:27:52,277 INFO L473 AbstractCegarLoop]: Interpolant automaton has 220 states. [2018-07-25 13:27:52,277 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 444 transitions. [2018-07-25 13:27:52,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2018-07-25 13:27:52,278 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:52,278 INFO L354 BasicCegarLoop]: trace histogram [110, 110, 109, 109, 1, 1, 1, 1] [2018-07-25 13:27:52,278 INFO L415 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:52,278 INFO L82 PathProgramCache]: Analyzing trace with hash -1290703993, now seen corresponding path program 164 times [2018-07-25 13:27:52,278 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:52,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:53,981 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 11990 proven. 11990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:27:53,982 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:53,982 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [220] total 220 [2018-07-25 13:27:53,982 INFO L451 AbstractCegarLoop]: Interpolant automaton has 221 states [2018-07-25 13:27:53,984 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 221 interpolants. [2018-07-25 13:27:53,986 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12320, Invalid=36300, Unknown=0, NotChecked=0, Total=48620 [2018-07-25 13:27:53,986 INFO L87 Difference]: Start difference. First operand 443 states and 444 transitions. Second operand 221 states. [2018-07-25 13:27:55,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:55,755 INFO L93 Difference]: Finished difference Result 667 states and 669 transitions. [2018-07-25 13:27:55,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 221 states. [2018-07-25 13:27:55,755 INFO L78 Accepts]: Start accepts. Automaton has 221 states. Word has length 442 [2018-07-25 13:27:55,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:55,755 INFO L225 Difference]: With dead ends: 667 [2018-07-25 13:27:55,756 INFO L226 Difference]: Without dead ends: 445 [2018-07-25 13:27:55,763 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 328 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17659 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=30414, Invalid=78156, Unknown=0, NotChecked=0, Total=108570 [2018-07-25 13:27:55,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2018-07-25 13:27:55,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 445. [2018-07-25 13:27:55,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2018-07-25 13:27:55,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 446 transitions. [2018-07-25 13:27:55,798 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 446 transitions. Word has length 442 [2018-07-25 13:27:55,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:55,799 INFO L472 AbstractCegarLoop]: Abstraction has 445 states and 446 transitions. [2018-07-25 13:27:55,799 INFO L473 AbstractCegarLoop]: Interpolant automaton has 221 states. [2018-07-25 13:27:55,799 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 446 transitions. [2018-07-25 13:27:55,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2018-07-25 13:27:55,800 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:55,800 INFO L354 BasicCegarLoop]: trace histogram [111, 110, 110, 109, 1, 1, 1, 1] [2018-07-25 13:27:55,800 INFO L415 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:55,800 INFO L82 PathProgramCache]: Analyzing trace with hash -866638973, now seen corresponding path program 165 times [2018-07-25 13:27:55,801 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:56,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:56,928 INFO L134 CoverageAnalysis]: Checked inductivity of 24200 backedges. 12210 proven. 11990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:27:56,929 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:56,929 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114] total 114 [2018-07-25 13:27:56,929 INFO L451 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-07-25 13:27:56,930 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-07-25 13:27:56,930 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6443, Invalid=6667, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 13:27:56,930 INFO L87 Difference]: Start difference. First operand 445 states and 446 transitions. Second operand 115 states. [2018-07-25 13:27:57,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:57,453 INFO L93 Difference]: Finished difference Result 451 states and 453 transitions. [2018-07-25 13:27:57,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 225 states. [2018-07-25 13:27:57,454 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 444 [2018-07-25 13:27:57,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:57,454 INFO L225 Difference]: With dead ends: 451 [2018-07-25 13:27:57,455 INFO L226 Difference]: Without dead ends: 449 [2018-07-25 13:27:57,459 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12321 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19098, Invalid=31752, Unknown=0, NotChecked=0, Total=50850 [2018-07-25 13:27:57,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2018-07-25 13:27:57,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 449. [2018-07-25 13:27:57,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2018-07-25 13:27:57,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 450 transitions. [2018-07-25 13:27:57,495 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 450 transitions. Word has length 444 [2018-07-25 13:27:57,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:57,495 INFO L472 AbstractCegarLoop]: Abstraction has 449 states and 450 transitions. [2018-07-25 13:27:57,495 INFO L473 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-07-25 13:27:57,495 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 450 transitions. [2018-07-25 13:27:57,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2018-07-25 13:27:57,496 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:57,496 INFO L354 BasicCegarLoop]: trace histogram [112, 111, 111, 110, 1, 1, 1, 1] [2018-07-25 13:27:57,497 INFO L415 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:57,497 INFO L82 PathProgramCache]: Analyzing trace with hash -674952073, now seen corresponding path program 166 times [2018-07-25 13:27:57,497 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:58,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:59,315 INFO L134 CoverageAnalysis]: Checked inductivity of 24642 backedges. 12432 proven. 12210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:27:59,316 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:59,316 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [223] total 223 [2018-07-25 13:27:59,316 INFO L451 AbstractCegarLoop]: Interpolant automaton has 224 states [2018-07-25 13:27:59,318 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 224 interpolants. [2018-07-25 13:27:59,321 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12655, Invalid=37297, Unknown=0, NotChecked=0, Total=49952 [2018-07-25 13:27:59,321 INFO L87 Difference]: Start difference. First operand 449 states and 450 transitions. Second operand 224 states. [2018-07-25 13:28:00,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:28:00,878 INFO L93 Difference]: Finished difference Result 677 states and 679 transitions. [2018-07-25 13:28:00,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2018-07-25 13:28:00,878 INFO L78 Accepts]: Start accepts. Automaton has 224 states. Word has length 448 [2018-07-25 13:28:00,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:28:00,879 INFO L225 Difference]: With dead ends: 677 [2018-07-25 13:28:00,879 INFO L226 Difference]: Without dead ends: 451 [2018-07-25 13:28:00,883 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 332 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18205 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=31080, Invalid=80142, Unknown=0, NotChecked=0, Total=111222 [2018-07-25 13:28:00,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2018-07-25 13:28:00,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 451. [2018-07-25 13:28:00,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 451 states. [2018-07-25 13:28:00,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 452 transitions. [2018-07-25 13:28:00,919 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 452 transitions. Word has length 448 [2018-07-25 13:28:00,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:28:00,919 INFO L472 AbstractCegarLoop]: Abstraction has 451 states and 452 transitions. [2018-07-25 13:28:00,919 INFO L473 AbstractCegarLoop]: Interpolant automaton has 224 states. [2018-07-25 13:28:00,919 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 452 transitions. [2018-07-25 13:28:00,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2018-07-25 13:28:00,921 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:28:00,921 INFO L354 BasicCegarLoop]: trace histogram [112, 112, 111, 111, 1, 1, 1, 1] [2018-07-25 13:28:00,921 INFO L415 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:28:00,921 INFO L82 PathProgramCache]: Analyzing trace with hash 193517427, now seen corresponding path program 167 times [2018-07-25 13:28:00,921 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:28:01,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:02,705 INFO L134 CoverageAnalysis]: Checked inductivity of 24864 backedges. 12432 proven. 12432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:28:02,705 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:28:02,706 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [224] total 224 [2018-07-25 13:28:02,706 INFO L451 AbstractCegarLoop]: Interpolant automaton has 225 states [2018-07-25 13:28:02,709 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 225 interpolants. [2018-07-25 13:28:02,715 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12768, Invalid=37632, Unknown=0, NotChecked=0, Total=50400 [2018-07-25 13:28:02,715 INFO L87 Difference]: Start difference. First operand 451 states and 452 transitions. Second operand 225 states. [2018-07-25 13:28:04,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:28:04,300 INFO L93 Difference]: Finished difference Result 679 states and 681 transitions. [2018-07-25 13:28:04,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 225 states. [2018-07-25 13:28:04,300 INFO L78 Accepts]: Start accepts. Automaton has 225 states. Word has length 450 [2018-07-25 13:28:04,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:28:04,300 INFO L225 Difference]: With dead ends: 679 [2018-07-25 13:28:04,301 INFO L226 Difference]: Without dead ends: 453 [2018-07-25 13:28:04,303 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 334 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18316 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=31527, Invalid=81033, Unknown=0, NotChecked=0, Total=112560 [2018-07-25 13:28:04,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2018-07-25 13:28:04,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 453. [2018-07-25 13:28:04,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2018-07-25 13:28:04,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 454 transitions. [2018-07-25 13:28:04,340 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 454 transitions. Word has length 450 [2018-07-25 13:28:04,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:28:04,340 INFO L472 AbstractCegarLoop]: Abstraction has 453 states and 454 transitions. [2018-07-25 13:28:04,340 INFO L473 AbstractCegarLoop]: Interpolant automaton has 225 states. [2018-07-25 13:28:04,340 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 454 transitions. [2018-07-25 13:28:04,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2018-07-25 13:28:04,341 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:28:04,341 INFO L354 BasicCegarLoop]: trace histogram [113, 112, 112, 111, 1, 1, 1, 1] [2018-07-25 13:28:04,341 INFO L415 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:28:04,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1569051503, now seen corresponding path program 168 times [2018-07-25 13:28:04,342 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:28:04,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:05,464 INFO L134 CoverageAnalysis]: Checked inductivity of 25088 backedges. 12656 proven. 12432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:28:05,464 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:28:05,464 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116] total 116 [2018-07-25 13:28:05,465 INFO L451 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-07-25 13:28:05,465 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-07-25 13:28:05,465 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6672, Invalid=6900, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 13:28:05,466 INFO L87 Difference]: Start difference. First operand 453 states and 454 transitions. Second operand 117 states. [2018-07-25 13:28:06,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:28:06,026 INFO L93 Difference]: Finished difference Result 459 states and 461 transitions. [2018-07-25 13:28:06,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 229 states. [2018-07-25 13:28:06,026 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 452 [2018-07-25 13:28:06,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:28:06,027 INFO L225 Difference]: With dead ends: 459 [2018-07-25 13:28:06,027 INFO L226 Difference]: Without dead ends: 457 [2018-07-25 13:28:06,030 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12769 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19781, Invalid=32889, Unknown=0, NotChecked=0, Total=52670 [2018-07-25 13:28:06,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2018-07-25 13:28:06,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 457. [2018-07-25 13:28:06,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 457 states. [2018-07-25 13:28:06,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 458 transitions. [2018-07-25 13:28:06,067 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 458 transitions. Word has length 452 [2018-07-25 13:28:06,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:28:06,067 INFO L472 AbstractCegarLoop]: Abstraction has 457 states and 458 transitions. [2018-07-25 13:28:06,068 INFO L473 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-07-25 13:28:06,068 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 458 transitions. [2018-07-25 13:28:06,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2018-07-25 13:28:06,069 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:28:06,069 INFO L354 BasicCegarLoop]: trace histogram [114, 113, 113, 112, 1, 1, 1, 1] [2018-07-25 13:28:06,069 INFO L415 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:28:06,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1182734749, now seen corresponding path program 169 times [2018-07-25 13:28:06,069 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:28:06,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:07,976 INFO L134 CoverageAnalysis]: Checked inductivity of 25538 backedges. 12882 proven. 12656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:28:07,976 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:28:07,976 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [227] total 227 [2018-07-25 13:28:07,977 INFO L451 AbstractCegarLoop]: Interpolant automaton has 228 states [2018-07-25 13:28:07,979 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 228 interpolants. [2018-07-25 13:28:07,981 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13109, Invalid=38647, Unknown=0, NotChecked=0, Total=51756 [2018-07-25 13:28:07,982 INFO L87 Difference]: Start difference. First operand 457 states and 458 transitions. Second operand 228 states. [2018-07-25 13:28:09,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:28:09,417 INFO L93 Difference]: Finished difference Result 689 states and 691 transitions. [2018-07-25 13:28:09,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 227 states. [2018-07-25 13:28:09,417 INFO L78 Accepts]: Start accepts. Automaton has 228 states. Word has length 456 [2018-07-25 13:28:09,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:28:09,418 INFO L225 Difference]: With dead ends: 689 [2018-07-25 13:28:09,418 INFO L226 Difference]: Without dead ends: 459 [2018-07-25 13:28:09,424 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 338 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18872 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=32205, Invalid=83055, Unknown=0, NotChecked=0, Total=115260 [2018-07-25 13:28:09,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2018-07-25 13:28:09,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 459. [2018-07-25 13:28:09,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2018-07-25 13:28:09,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 460 transitions. [2018-07-25 13:28:09,461 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 460 transitions. Word has length 456 [2018-07-25 13:28:09,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:28:09,461 INFO L472 AbstractCegarLoop]: Abstraction has 459 states and 460 transitions. [2018-07-25 13:28:09,461 INFO L473 AbstractCegarLoop]: Interpolant automaton has 228 states. [2018-07-25 13:28:09,461 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 460 transitions. [2018-07-25 13:28:09,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2018-07-25 13:28:09,463 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:28:09,463 INFO L354 BasicCegarLoop]: trace histogram [114, 114, 113, 113, 1, 1, 1, 1] [2018-07-25 13:28:09,463 INFO L415 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:28:09,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1832383839, now seen corresponding path program 170 times [2018-07-25 13:28:09,463 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:28:10,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:11,384 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 12882 proven. 12882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:28:11,384 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:28:11,385 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [228] total 228 [2018-07-25 13:28:11,385 INFO L451 AbstractCegarLoop]: Interpolant automaton has 229 states [2018-07-25 13:28:11,386 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 229 interpolants. [2018-07-25 13:28:11,387 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13224, Invalid=38988, Unknown=0, NotChecked=0, Total=52212 [2018-07-25 13:28:11,388 INFO L87 Difference]: Start difference. First operand 459 states and 460 transitions. Second operand 229 states. [2018-07-25 13:28:12,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:28:12,980 INFO L93 Difference]: Finished difference Result 691 states and 693 transitions. [2018-07-25 13:28:12,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 229 states. [2018-07-25 13:28:12,980 INFO L78 Accepts]: Start accepts. Automaton has 229 states. Word has length 458 [2018-07-25 13:28:12,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:28:12,981 INFO L225 Difference]: With dead ends: 691 [2018-07-25 13:28:12,981 INFO L226 Difference]: Without dead ends: 461 [2018-07-25 13:28:12,987 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 340 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18985 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=32660, Invalid=83962, Unknown=0, NotChecked=0, Total=116622 [2018-07-25 13:28:12,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2018-07-25 13:28:13,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 461. [2018-07-25 13:28:13,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2018-07-25 13:28:13,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 462 transitions. [2018-07-25 13:28:13,025 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 462 transitions. Word has length 458 [2018-07-25 13:28:13,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:28:13,025 INFO L472 AbstractCegarLoop]: Abstraction has 461 states and 462 transitions. [2018-07-25 13:28:13,025 INFO L473 AbstractCegarLoop]: Interpolant automaton has 229 states. [2018-07-25 13:28:13,025 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 462 transitions. [2018-07-25 13:28:13,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2018-07-25 13:28:13,027 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:28:13,027 INFO L354 BasicCegarLoop]: trace histogram [115, 114, 114, 113, 1, 1, 1, 1] [2018-07-25 13:28:13,027 INFO L415 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:28:13,027 INFO L82 PathProgramCache]: Analyzing trace with hash 258422107, now seen corresponding path program 171 times [2018-07-25 13:28:13,027 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:28:13,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:14,227 INFO L134 CoverageAnalysis]: Checked inductivity of 25992 backedges. 13110 proven. 12882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:28:14,228 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:28:14,228 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118] total 118 [2018-07-25 13:28:14,228 INFO L451 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-07-25 13:28:14,229 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-07-25 13:28:14,230 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6905, Invalid=7137, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 13:28:14,230 INFO L87 Difference]: Start difference. First operand 461 states and 462 transitions. Second operand 119 states. [2018-07-25 13:28:14,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:28:14,856 INFO L93 Difference]: Finished difference Result 467 states and 469 transitions. [2018-07-25 13:28:14,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 233 states. [2018-07-25 13:28:14,856 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 460 [2018-07-25 13:28:14,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:28:14,857 INFO L225 Difference]: With dead ends: 467 [2018-07-25 13:28:14,857 INFO L226 Difference]: Without dead ends: 465 [2018-07-25 13:28:14,859 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13225 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=20476, Invalid=34046, Unknown=0, NotChecked=0, Total=54522 [2018-07-25 13:28:14,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2018-07-25 13:28:14,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 465. [2018-07-25 13:28:14,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 465 states. [2018-07-25 13:28:14,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 466 transitions. [2018-07-25 13:28:14,897 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 466 transitions. Word has length 460 [2018-07-25 13:28:14,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:28:14,897 INFO L472 AbstractCegarLoop]: Abstraction has 465 states and 466 transitions. [2018-07-25 13:28:14,897 INFO L473 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-07-25 13:28:14,897 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 466 transitions. [2018-07-25 13:28:14,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2018-07-25 13:28:14,899 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:28:14,899 INFO L354 BasicCegarLoop]: trace histogram [116, 115, 115, 114, 1, 1, 1, 1] [2018-07-25 13:28:14,899 INFO L415 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:28:14,899 INFO L82 PathProgramCache]: Analyzing trace with hash -154701233, now seen corresponding path program 172 times [2018-07-25 13:28:14,899 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:28:15,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:16,907 INFO L134 CoverageAnalysis]: Checked inductivity of 26450 backedges. 13340 proven. 13110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:28:16,908 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:28:16,908 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [231] total 231 [2018-07-25 13:28:16,908 INFO L451 AbstractCegarLoop]: Interpolant automaton has 232 states [2018-07-25 13:28:16,910 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 232 interpolants. [2018-07-25 13:28:16,912 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13571, Invalid=40021, Unknown=0, NotChecked=0, Total=53592 [2018-07-25 13:28:16,913 INFO L87 Difference]: Start difference. First operand 465 states and 466 transitions. Second operand 232 states. [2018-07-25 13:28:19,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:28:19,039 INFO L93 Difference]: Finished difference Result 701 states and 703 transitions. [2018-07-25 13:28:19,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 231 states. [2018-07-25 13:28:19,039 INFO L78 Accepts]: Start accepts. Automaton has 232 states. Word has length 464 [2018-07-25 13:28:19,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:28:19,040 INFO L225 Difference]: With dead ends: 701 [2018-07-25 13:28:19,040 INFO L226 Difference]: Without dead ends: 467 [2018-07-25 13:28:19,043 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 344 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19551 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=33350, Invalid=86020, Unknown=0, NotChecked=0, Total=119370 [2018-07-25 13:28:19,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2018-07-25 13:28:19,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 467. [2018-07-25 13:28:19,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2018-07-25 13:28:19,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 468 transitions. [2018-07-25 13:28:19,081 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 468 transitions. Word has length 464 [2018-07-25 13:28:19,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:28:19,081 INFO L472 AbstractCegarLoop]: Abstraction has 467 states and 468 transitions. [2018-07-25 13:28:19,081 INFO L473 AbstractCegarLoop]: Interpolant automaton has 232 states. [2018-07-25 13:28:19,081 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 468 transitions. [2018-07-25 13:28:19,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2018-07-25 13:28:19,083 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:28:19,083 INFO L354 BasicCegarLoop]: trace histogram [116, 116, 115, 115, 1, 1, 1, 1] [2018-07-25 13:28:19,083 INFO L415 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:28:19,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1259485877, now seen corresponding path program 173 times [2018-07-25 13:28:19,083 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:28:19,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:21,038 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 13340 proven. 13340 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:28:21,039 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:28:21,039 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [232] total 232 [2018-07-25 13:28:21,039 INFO L451 AbstractCegarLoop]: Interpolant automaton has 233 states [2018-07-25 13:28:21,041 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 233 interpolants. [2018-07-25 13:28:21,044 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13688, Invalid=40368, Unknown=0, NotChecked=0, Total=54056 [2018-07-25 13:28:21,044 INFO L87 Difference]: Start difference. First operand 467 states and 468 transitions. Second operand 233 states. [2018-07-25 13:28:23,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:28:23,032 INFO L93 Difference]: Finished difference Result 703 states and 705 transitions. [2018-07-25 13:28:23,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 233 states. [2018-07-25 13:28:23,032 INFO L78 Accepts]: Start accepts. Automaton has 233 states. Word has length 466 [2018-07-25 13:28:23,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:28:23,033 INFO L225 Difference]: With dead ends: 703 [2018-07-25 13:28:23,033 INFO L226 Difference]: Without dead ends: 469 [2018-07-25 13:28:23,040 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 346 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19666 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=33813, Invalid=86943, Unknown=0, NotChecked=0, Total=120756 [2018-07-25 13:28:23,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2018-07-25 13:28:23,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 469. [2018-07-25 13:28:23,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 469 states. [2018-07-25 13:28:23,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 470 transitions. [2018-07-25 13:28:23,150 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 470 transitions. Word has length 466 [2018-07-25 13:28:23,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:28:23,150 INFO L472 AbstractCegarLoop]: Abstraction has 469 states and 470 transitions. [2018-07-25 13:28:23,150 INFO L473 AbstractCegarLoop]: Interpolant automaton has 233 states. [2018-07-25 13:28:23,150 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 470 transitions. [2018-07-25 13:28:23,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2018-07-25 13:28:23,151 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:28:23,152 INFO L354 BasicCegarLoop]: trace histogram [117, 116, 116, 115, 1, 1, 1, 1] [2018-07-25 13:28:23,152 INFO L415 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:28:23,152 INFO L82 PathProgramCache]: Analyzing trace with hash -2100606649, now seen corresponding path program 174 times [2018-07-25 13:28:23,152 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:28:23,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:24,414 INFO L134 CoverageAnalysis]: Checked inductivity of 26912 backedges. 13572 proven. 13340 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:28:24,414 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:28:24,414 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120] total 120 [2018-07-25 13:28:24,415 INFO L451 AbstractCegarLoop]: Interpolant automaton has 121 states [2018-07-25 13:28:24,415 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2018-07-25 13:28:24,416 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7142, Invalid=7378, Unknown=0, NotChecked=0, Total=14520 [2018-07-25 13:28:24,416 INFO L87 Difference]: Start difference. First operand 469 states and 470 transitions. Second operand 121 states. [2018-07-25 13:28:25,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:28:25,090 INFO L93 Difference]: Finished difference Result 475 states and 477 transitions. [2018-07-25 13:28:25,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 237 states. [2018-07-25 13:28:25,090 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 468 [2018-07-25 13:28:25,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:28:25,091 INFO L225 Difference]: With dead ends: 475 [2018-07-25 13:28:25,091 INFO L226 Difference]: Without dead ends: 473 [2018-07-25 13:28:25,097 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13689 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=21183, Invalid=35223, Unknown=0, NotChecked=0, Total=56406 [2018-07-25 13:28:25,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2018-07-25 13:28:25,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 473. [2018-07-25 13:28:25,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2018-07-25 13:28:25,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 474 transitions. [2018-07-25 13:28:25,153 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 474 transitions. Word has length 468 [2018-07-25 13:28:25,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:28:25,153 INFO L472 AbstractCegarLoop]: Abstraction has 473 states and 474 transitions. [2018-07-25 13:28:25,153 INFO L473 AbstractCegarLoop]: Interpolant automaton has 121 states. [2018-07-25 13:28:25,153 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 474 transitions. [2018-07-25 13:28:25,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2018-07-25 13:28:25,156 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:28:25,156 INFO L354 BasicCegarLoop]: trace histogram [118, 117, 117, 116, 1, 1, 1, 1] [2018-07-25 13:28:25,156 INFO L415 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:28:25,156 INFO L82 PathProgramCache]: Analyzing trace with hash 820490299, now seen corresponding path program 175 times [2018-07-25 13:28:25,156 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:28:25,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:27,182 INFO L134 CoverageAnalysis]: Checked inductivity of 27378 backedges. 13806 proven. 13572 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:28:27,182 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:28:27,182 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [235] total 235 [2018-07-25 13:28:27,183 INFO L451 AbstractCegarLoop]: Interpolant automaton has 236 states [2018-07-25 13:28:27,184 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 236 interpolants. [2018-07-25 13:28:27,186 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14041, Invalid=41419, Unknown=0, NotChecked=0, Total=55460 [2018-07-25 13:28:27,186 INFO L87 Difference]: Start difference. First operand 473 states and 474 transitions. Second operand 236 states. [2018-07-25 13:28:28,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:28:28,875 INFO L93 Difference]: Finished difference Result 713 states and 715 transitions. [2018-07-25 13:28:28,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 235 states. [2018-07-25 13:28:28,875 INFO L78 Accepts]: Start accepts. Automaton has 236 states. Word has length 472 [2018-07-25 13:28:28,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:28:28,876 INFO L225 Difference]: With dead ends: 713 [2018-07-25 13:28:28,876 INFO L226 Difference]: Without dead ends: 475 [2018-07-25 13:28:28,883 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 350 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20242 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=34515, Invalid=89037, Unknown=0, NotChecked=0, Total=123552 [2018-07-25 13:28:28,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2018-07-25 13:28:28,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 475. [2018-07-25 13:28:28,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2018-07-25 13:28:28,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 476 transitions. [2018-07-25 13:28:28,923 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 476 transitions. Word has length 472 [2018-07-25 13:28:28,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:28:28,923 INFO L472 AbstractCegarLoop]: Abstraction has 475 states and 476 transitions. [2018-07-25 13:28:28,923 INFO L473 AbstractCegarLoop]: Interpolant automaton has 236 states. [2018-07-25 13:28:28,923 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 476 transitions. [2018-07-25 13:28:28,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2018-07-25 13:28:28,925 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:28:28,925 INFO L354 BasicCegarLoop]: trace histogram [118, 118, 117, 117, 1, 1, 1, 1] [2018-07-25 13:28:28,925 INFO L415 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:28:28,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1207519031, now seen corresponding path program 176 times [2018-07-25 13:28:28,925 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:28:29,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:30,961 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 13806 proven. 13806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:28:30,962 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:28:30,962 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [236] total 236 [2018-07-25 13:28:30,962 INFO L451 AbstractCegarLoop]: Interpolant automaton has 237 states [2018-07-25 13:28:30,963 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 237 interpolants. [2018-07-25 13:28:30,965 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14160, Invalid=41772, Unknown=0, NotChecked=0, Total=55932 [2018-07-25 13:28:30,966 INFO L87 Difference]: Start difference. First operand 475 states and 476 transitions. Second operand 237 states. [2018-07-25 13:28:32,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:28:32,476 INFO L93 Difference]: Finished difference Result 715 states and 717 transitions. [2018-07-25 13:28:32,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 237 states. [2018-07-25 13:28:32,476 INFO L78 Accepts]: Start accepts. Automaton has 237 states. Word has length 474 [2018-07-25 13:28:32,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:28:32,477 INFO L225 Difference]: With dead ends: 715 [2018-07-25 13:28:32,477 INFO L226 Difference]: Without dead ends: 477 [2018-07-25 13:28:32,483 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 352 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20359 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=34986, Invalid=89976, Unknown=0, NotChecked=0, Total=124962 [2018-07-25 13:28:32,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2018-07-25 13:28:32,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 477. [2018-07-25 13:28:32,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2018-07-25 13:28:32,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 478 transitions. [2018-07-25 13:28:32,523 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 478 transitions. Word has length 474 [2018-07-25 13:28:32,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:28:32,523 INFO L472 AbstractCegarLoop]: Abstraction has 477 states and 478 transitions. [2018-07-25 13:28:32,523 INFO L473 AbstractCegarLoop]: Interpolant automaton has 237 states. [2018-07-25 13:28:32,523 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 478 transitions. [2018-07-25 13:28:32,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2018-07-25 13:28:32,525 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:28:32,525 INFO L354 BasicCegarLoop]: trace histogram [119, 118, 118, 117, 1, 1, 1, 1] [2018-07-25 13:28:32,525 INFO L415 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:28:32,525 INFO L82 PathProgramCache]: Analyzing trace with hash -520024269, now seen corresponding path program 177 times [2018-07-25 13:28:32,525 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:28:33,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:33,871 INFO L134 CoverageAnalysis]: Checked inductivity of 27848 backedges. 14042 proven. 13806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:28:33,871 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:28:33,871 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [122] total 122 [2018-07-25 13:28:33,872 INFO L451 AbstractCegarLoop]: Interpolant automaton has 123 states [2018-07-25 13:28:33,872 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2018-07-25 13:28:33,873 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7383, Invalid=7623, Unknown=0, NotChecked=0, Total=15006 [2018-07-25 13:28:33,873 INFO L87 Difference]: Start difference. First operand 477 states and 478 transitions. Second operand 123 states. [2018-07-25 13:28:34,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:28:34,488 INFO L93 Difference]: Finished difference Result 483 states and 485 transitions. [2018-07-25 13:28:34,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 241 states. [2018-07-25 13:28:34,488 INFO L78 Accepts]: Start accepts. Automaton has 123 states. Word has length 476 [2018-07-25 13:28:34,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:28:34,489 INFO L225 Difference]: With dead ends: 483 [2018-07-25 13:28:34,489 INFO L226 Difference]: Without dead ends: 481 [2018-07-25 13:28:34,492 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14161 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=21902, Invalid=36420, Unknown=0, NotChecked=0, Total=58322 [2018-07-25 13:28:34,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2018-07-25 13:28:34,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 481. [2018-07-25 13:28:34,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 481 states. [2018-07-25 13:28:34,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 482 transitions. [2018-07-25 13:28:34,533 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 482 transitions. Word has length 476 [2018-07-25 13:28:34,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:28:34,533 INFO L472 AbstractCegarLoop]: Abstraction has 481 states and 482 transitions. [2018-07-25 13:28:34,533 INFO L473 AbstractCegarLoop]: Interpolant automaton has 123 states. [2018-07-25 13:28:34,533 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 482 transitions. [2018-07-25 13:28:34,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2018-07-25 13:28:34,535 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:28:34,535 INFO L354 BasicCegarLoop]: trace histogram [120, 119, 119, 118, 1, 1, 1, 1] [2018-07-25 13:28:34,535 INFO L415 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:28:34,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1370529831, now seen corresponding path program 178 times [2018-07-25 13:28:34,536 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:28:35,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:36,764 INFO L134 CoverageAnalysis]: Checked inductivity of 28322 backedges. 14280 proven. 14042 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:28:36,764 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:28:36,765 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [239] total 239 [2018-07-25 13:28:36,765 INFO L451 AbstractCegarLoop]: Interpolant automaton has 240 states [2018-07-25 13:28:36,767 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 240 interpolants. [2018-07-25 13:28:36,770 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14519, Invalid=42841, Unknown=0, NotChecked=0, Total=57360 [2018-07-25 13:28:36,770 INFO L87 Difference]: Start difference. First operand 481 states and 482 transitions. Second operand 240 states. [2018-07-25 13:28:38,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:28:38,658 INFO L93 Difference]: Finished difference Result 725 states and 727 transitions. [2018-07-25 13:28:38,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 239 states. [2018-07-25 13:28:38,658 INFO L78 Accepts]: Start accepts. Automaton has 240 states. Word has length 480 [2018-07-25 13:28:38,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:28:38,659 INFO L225 Difference]: With dead ends: 725 [2018-07-25 13:28:38,659 INFO L226 Difference]: Without dead ends: 483 [2018-07-25 13:28:38,665 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 356 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20945 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=35700, Invalid=92106, Unknown=0, NotChecked=0, Total=127806 [2018-07-25 13:28:38,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2018-07-25 13:28:38,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2018-07-25 13:28:38,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2018-07-25 13:28:38,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 484 transitions. [2018-07-25 13:28:38,705 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 484 transitions. Word has length 480 [2018-07-25 13:28:38,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:28:38,706 INFO L472 AbstractCegarLoop]: Abstraction has 483 states and 484 transitions. [2018-07-25 13:28:38,706 INFO L473 AbstractCegarLoop]: Interpolant automaton has 240 states. [2018-07-25 13:28:38,706 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 484 transitions. [2018-07-25 13:28:38,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2018-07-25 13:28:38,707 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:28:38,707 INFO L354 BasicCegarLoop]: trace histogram [120, 120, 119, 119, 1, 1, 1, 1] [2018-07-25 13:28:38,708 INFO L415 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:28:38,708 INFO L82 PathProgramCache]: Analyzing trace with hash -735479005, now seen corresponding path program 179 times [2018-07-25 13:28:38,708 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:28:39,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:41,104 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 14280 proven. 14280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:28:41,104 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:28:41,104 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [240] total 240 [2018-07-25 13:28:41,104 INFO L451 AbstractCegarLoop]: Interpolant automaton has 241 states [2018-07-25 13:28:41,105 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 241 interpolants. [2018-07-25 13:28:41,107 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14640, Invalid=43200, Unknown=0, NotChecked=0, Total=57840 [2018-07-25 13:28:41,107 INFO L87 Difference]: Start difference. First operand 483 states and 484 transitions. Second operand 241 states. [2018-07-25 13:28:43,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:28:43,052 INFO L93 Difference]: Finished difference Result 727 states and 729 transitions. [2018-07-25 13:28:43,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 241 states. [2018-07-25 13:28:43,052 INFO L78 Accepts]: Start accepts. Automaton has 241 states. Word has length 482 [2018-07-25 13:28:43,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:28:43,053 INFO L225 Difference]: With dead ends: 727 [2018-07-25 13:28:43,053 INFO L226 Difference]: Without dead ends: 485 [2018-07-25 13:28:43,058 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 358 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21064 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=36179, Invalid=93061, Unknown=0, NotChecked=0, Total=129240 [2018-07-25 13:28:43,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2018-07-25 13:28:43,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 485. [2018-07-25 13:28:43,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2018-07-25 13:28:43,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 486 transitions. [2018-07-25 13:28:43,099 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 486 transitions. Word has length 482 [2018-07-25 13:28:43,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:28:43,099 INFO L472 AbstractCegarLoop]: Abstraction has 485 states and 486 transitions. [2018-07-25 13:28:43,099 INFO L473 AbstractCegarLoop]: Interpolant automaton has 241 states. [2018-07-25 13:28:43,099 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 486 transitions. [2018-07-25 13:28:43,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2018-07-25 13:28:43,101 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:28:43,101 INFO L354 BasicCegarLoop]: trace histogram [121, 120, 120, 119, 1, 1, 1, 1] [2018-07-25 13:28:43,101 INFO L415 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:28:43,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1680373985, now seen corresponding path program 180 times [2018-07-25 13:28:43,101 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:28:43,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:44,455 INFO L134 CoverageAnalysis]: Checked inductivity of 28800 backedges. 14520 proven. 14280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:28:44,455 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:28:44,455 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [124] total 124 [2018-07-25 13:28:44,456 INFO L451 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-07-25 13:28:44,456 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-07-25 13:28:44,457 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7628, Invalid=7872, Unknown=0, NotChecked=0, Total=15500 [2018-07-25 13:28:44,457 INFO L87 Difference]: Start difference. First operand 485 states and 486 transitions. Second operand 125 states. [2018-07-25 13:28:45,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:28:45,184 INFO L93 Difference]: Finished difference Result 491 states and 493 transitions. [2018-07-25 13:28:45,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 245 states. [2018-07-25 13:28:45,185 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 484 [2018-07-25 13:28:45,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:28:45,185 INFO L225 Difference]: With dead ends: 491 [2018-07-25 13:28:45,185 INFO L226 Difference]: Without dead ends: 489 [2018-07-25 13:28:45,189 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 244 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14641 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=22633, Invalid=37637, Unknown=0, NotChecked=0, Total=60270 [2018-07-25 13:28:45,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2018-07-25 13:28:45,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 489. [2018-07-25 13:28:45,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2018-07-25 13:28:45,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 490 transitions. [2018-07-25 13:28:45,232 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 490 transitions. Word has length 484 [2018-07-25 13:28:45,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:28:45,232 INFO L472 AbstractCegarLoop]: Abstraction has 489 states and 490 transitions. [2018-07-25 13:28:45,232 INFO L473 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-07-25 13:28:45,232 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 490 transitions. [2018-07-25 13:28:45,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2018-07-25 13:28:45,234 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:28:45,234 INFO L354 BasicCegarLoop]: trace histogram [122, 121, 121, 120, 1, 1, 1, 1] [2018-07-25 13:28:45,234 INFO L415 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:28:45,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1265713683, now seen corresponding path program 181 times [2018-07-25 13:28:45,234 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:28:46,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:47,505 INFO L134 CoverageAnalysis]: Checked inductivity of 29282 backedges. 14762 proven. 14520 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:28:47,505 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:28:47,505 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [243] total 243 [2018-07-25 13:28:47,505 INFO L451 AbstractCegarLoop]: Interpolant automaton has 244 states [2018-07-25 13:28:47,507 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 244 interpolants. [2018-07-25 13:28:47,510 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15005, Invalid=44287, Unknown=0, NotChecked=0, Total=59292 [2018-07-25 13:28:47,510 INFO L87 Difference]: Start difference. First operand 489 states and 490 transitions. Second operand 244 states. [2018-07-25 13:28:49,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:28:49,464 INFO L93 Difference]: Finished difference Result 737 states and 739 transitions. [2018-07-25 13:28:49,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 243 states. [2018-07-25 13:28:49,464 INFO L78 Accepts]: Start accepts. Automaton has 244 states. Word has length 488 [2018-07-25 13:28:49,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:28:49,465 INFO L225 Difference]: With dead ends: 737 [2018-07-25 13:28:49,465 INFO L226 Difference]: Without dead ends: 491 [2018-07-25 13:28:49,468 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 362 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21660 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=36905, Invalid=95227, Unknown=0, NotChecked=0, Total=132132 [2018-07-25 13:28:49,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2018-07-25 13:28:49,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 491. [2018-07-25 13:28:49,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2018-07-25 13:28:49,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 492 transitions. [2018-07-25 13:28:49,510 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 492 transitions. Word has length 488 [2018-07-25 13:28:49,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:28:49,511 INFO L472 AbstractCegarLoop]: Abstraction has 491 states and 492 transitions. [2018-07-25 13:28:49,511 INFO L473 AbstractCegarLoop]: Interpolant automaton has 244 states. [2018-07-25 13:28:49,511 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 492 transitions. [2018-07-25 13:28:49,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2018-07-25 13:28:49,512 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:28:49,512 INFO L354 BasicCegarLoop]: trace histogram [122, 122, 121, 121, 1, 1, 1, 1] [2018-07-25 13:28:49,513 INFO L415 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:28:49,513 INFO L82 PathProgramCache]: Analyzing trace with hash 265117967, now seen corresponding path program 182 times [2018-07-25 13:28:49,513 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:28:50,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:51,990 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 14762 proven. 14762 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:28:51,990 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:28:51,990 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [244] total 244 [2018-07-25 13:28:51,991 INFO L451 AbstractCegarLoop]: Interpolant automaton has 245 states [2018-07-25 13:28:51,993 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 245 interpolants. [2018-07-25 13:28:51,997 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15128, Invalid=44652, Unknown=0, NotChecked=0, Total=59780 [2018-07-25 13:28:51,997 INFO L87 Difference]: Start difference. First operand 491 states and 492 transitions. Second operand 245 states. [2018-07-25 13:28:54,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:28:54,317 INFO L93 Difference]: Finished difference Result 739 states and 741 transitions. [2018-07-25 13:28:54,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 245 states. [2018-07-25 13:28:54,317 INFO L78 Accepts]: Start accepts. Automaton has 245 states. Word has length 490 [2018-07-25 13:28:54,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:28:54,318 INFO L225 Difference]: With dead ends: 739 [2018-07-25 13:28:54,318 INFO L226 Difference]: Without dead ends: 493 [2018-07-25 13:28:54,322 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 364 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21781 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=37392, Invalid=96198, Unknown=0, NotChecked=0, Total=133590 [2018-07-25 13:28:54,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2018-07-25 13:28:54,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 493. [2018-07-25 13:28:54,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2018-07-25 13:28:54,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 494 transitions. [2018-07-25 13:28:54,364 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 494 transitions. Word has length 490 [2018-07-25 13:28:54,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:28:54,364 INFO L472 AbstractCegarLoop]: Abstraction has 493 states and 494 transitions. [2018-07-25 13:28:54,364 INFO L473 AbstractCegarLoop]: Interpolant automaton has 245 states. [2018-07-25 13:28:54,364 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 494 transitions. [2018-07-25 13:28:54,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2018-07-25 13:28:54,366 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:28:54,366 INFO L354 BasicCegarLoop]: trace histogram [123, 122, 122, 121, 1, 1, 1, 1] [2018-07-25 13:28:54,366 INFO L415 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:28:54,366 INFO L82 PathProgramCache]: Analyzing trace with hash 765309195, now seen corresponding path program 183 times [2018-07-25 13:28:54,366 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:28:55,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:55,782 INFO L134 CoverageAnalysis]: Checked inductivity of 29768 backedges. 15006 proven. 14762 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:28:55,783 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:28:55,783 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [126] total 126 [2018-07-25 13:28:55,783 INFO L451 AbstractCegarLoop]: Interpolant automaton has 127 states [2018-07-25 13:28:55,784 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2018-07-25 13:28:55,784 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7877, Invalid=8125, Unknown=0, NotChecked=0, Total=16002 [2018-07-25 13:28:55,785 INFO L87 Difference]: Start difference. First operand 493 states and 494 transitions. Second operand 127 states. [2018-07-25 13:28:56,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:28:56,517 INFO L93 Difference]: Finished difference Result 499 states and 501 transitions. [2018-07-25 13:28:56,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 249 states. [2018-07-25 13:28:56,517 INFO L78 Accepts]: Start accepts. Automaton has 127 states. Word has length 492 [2018-07-25 13:28:56,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:28:56,518 INFO L225 Difference]: With dead ends: 499 [2018-07-25 13:28:56,518 INFO L226 Difference]: Without dead ends: 497 [2018-07-25 13:28:56,522 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15129 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23376, Invalid=38874, Unknown=0, NotChecked=0, Total=62250 [2018-07-25 13:28:56,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2018-07-25 13:28:56,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 497. [2018-07-25 13:28:56,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 497 states. [2018-07-25 13:28:56,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 498 transitions. [2018-07-25 13:28:56,565 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 498 transitions. Word has length 492 [2018-07-25 13:28:56,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:28:56,565 INFO L472 AbstractCegarLoop]: Abstraction has 497 states and 498 transitions. [2018-07-25 13:28:56,565 INFO L473 AbstractCegarLoop]: Interpolant automaton has 127 states. [2018-07-25 13:28:56,565 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 498 transitions. [2018-07-25 13:28:56,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2018-07-25 13:28:56,567 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:28:56,567 INFO L354 BasicCegarLoop]: trace histogram [124, 123, 123, 122, 1, 1, 1, 1] [2018-07-25 13:28:56,567 INFO L415 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:28:56,567 INFO L82 PathProgramCache]: Analyzing trace with hash -654797313, now seen corresponding path program 184 times [2018-07-25 13:28:56,567 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:28:57,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:58,834 INFO L134 CoverageAnalysis]: Checked inductivity of 30258 backedges. 15252 proven. 15006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:28:58,834 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:28:58,835 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [247] total 247 [2018-07-25 13:28:58,835 INFO L451 AbstractCegarLoop]: Interpolant automaton has 248 states [2018-07-25 13:28:58,837 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 248 interpolants. [2018-07-25 13:28:58,839 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15499, Invalid=45757, Unknown=0, NotChecked=0, Total=61256 [2018-07-25 13:28:58,840 INFO L87 Difference]: Start difference. First operand 497 states and 498 transitions. Second operand 248 states. [2018-07-25 13:29:00,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:00,872 INFO L93 Difference]: Finished difference Result 749 states and 751 transitions. [2018-07-25 13:29:00,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 247 states. [2018-07-25 13:29:00,872 INFO L78 Accepts]: Start accepts. Automaton has 248 states. Word has length 496 [2018-07-25 13:29:00,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:00,874 INFO L225 Difference]: With dead ends: 749 [2018-07-25 13:29:00,874 INFO L226 Difference]: Without dead ends: 499 [2018-07-25 13:29:00,886 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 368 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22387 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=38130, Invalid=98400, Unknown=0, NotChecked=0, Total=136530 [2018-07-25 13:29:00,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2018-07-25 13:29:00,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 499. [2018-07-25 13:29:00,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 499 states. [2018-07-25 13:29:00,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 500 transitions. [2018-07-25 13:29:00,929 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 500 transitions. Word has length 496 [2018-07-25 13:29:00,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:00,929 INFO L472 AbstractCegarLoop]: Abstraction has 499 states and 500 transitions. [2018-07-25 13:29:00,929 INFO L473 AbstractCegarLoop]: Interpolant automaton has 248 states. [2018-07-25 13:29:00,929 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 500 transitions. [2018-07-25 13:29:00,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2018-07-25 13:29:00,931 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:00,931 INFO L354 BasicCegarLoop]: trace histogram [124, 124, 123, 123, 1, 1, 1, 1] [2018-07-25 13:29:00,931 INFO L415 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:00,932 INFO L82 PathProgramCache]: Analyzing trace with hash 2041837819, now seen corresponding path program 185 times [2018-07-25 13:29:00,932 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:01,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:03,282 INFO L134 CoverageAnalysis]: Checked inductivity of 30504 backedges. 15252 proven. 15252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:03,282 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:03,282 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [248] total 248 [2018-07-25 13:29:03,282 INFO L451 AbstractCegarLoop]: Interpolant automaton has 249 states [2018-07-25 13:29:03,284 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 249 interpolants. [2018-07-25 13:29:03,287 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15624, Invalid=46128, Unknown=0, NotChecked=0, Total=61752 [2018-07-25 13:29:03,287 INFO L87 Difference]: Start difference. First operand 499 states and 500 transitions. Second operand 249 states. [2018-07-25 13:29:05,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:05,656 INFO L93 Difference]: Finished difference Result 751 states and 753 transitions. [2018-07-25 13:29:05,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 249 states. [2018-07-25 13:29:05,656 INFO L78 Accepts]: Start accepts. Automaton has 249 states. Word has length 498 [2018-07-25 13:29:05,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:05,657 INFO L225 Difference]: With dead ends: 751 [2018-07-25 13:29:05,657 INFO L226 Difference]: Without dead ends: 501 [2018-07-25 13:29:05,660 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 370 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22510 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=38625, Invalid=99387, Unknown=0, NotChecked=0, Total=138012 [2018-07-25 13:29:05,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2018-07-25 13:29:05,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 501. [2018-07-25 13:29:05,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 501 states. [2018-07-25 13:29:05,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 502 transitions. [2018-07-25 13:29:05,704 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 502 transitions. Word has length 498 [2018-07-25 13:29:05,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:05,704 INFO L472 AbstractCegarLoop]: Abstraction has 501 states and 502 transitions. [2018-07-25 13:29:05,704 INFO L473 AbstractCegarLoop]: Interpolant automaton has 249 states. [2018-07-25 13:29:05,704 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 502 transitions. [2018-07-25 13:29:05,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2018-07-25 13:29:05,706 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:05,706 INFO L354 BasicCegarLoop]: trace histogram [125, 124, 124, 123, 1, 1, 1, 1] [2018-07-25 13:29:05,706 INFO L415 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:05,706 INFO L82 PathProgramCache]: Analyzing trace with hash -652047113, now seen corresponding path program 186 times [2018-07-25 13:29:05,706 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:06,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:07,264 INFO L134 CoverageAnalysis]: Checked inductivity of 30752 backedges. 15500 proven. 15252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:07,264 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:07,264 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [128] total 128 [2018-07-25 13:29:07,264 INFO L451 AbstractCegarLoop]: Interpolant automaton has 129 states [2018-07-25 13:29:07,265 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2018-07-25 13:29:07,266 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8130, Invalid=8382, Unknown=0, NotChecked=0, Total=16512 [2018-07-25 13:29:07,266 INFO L87 Difference]: Start difference. First operand 501 states and 502 transitions. Second operand 129 states. [2018-07-25 13:29:07,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:07,942 INFO L93 Difference]: Finished difference Result 507 states and 509 transitions. [2018-07-25 13:29:07,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 253 states. [2018-07-25 13:29:07,943 INFO L78 Accepts]: Start accepts. Automaton has 129 states. Word has length 500 [2018-07-25 13:29:07,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:07,943 INFO L225 Difference]: With dead ends: 507 [2018-07-25 13:29:07,944 INFO L226 Difference]: Without dead ends: 505 [2018-07-25 13:29:07,947 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15625 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=24131, Invalid=40131, Unknown=0, NotChecked=0, Total=64262 [2018-07-25 13:29:07,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2018-07-25 13:29:07,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 505. [2018-07-25 13:29:07,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 505 states. [2018-07-25 13:29:07,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 506 transitions. [2018-07-25 13:29:07,992 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 506 transitions. Word has length 500 [2018-07-25 13:29:07,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:07,992 INFO L472 AbstractCegarLoop]: Abstraction has 505 states and 506 transitions. [2018-07-25 13:29:07,992 INFO L473 AbstractCegarLoop]: Interpolant automaton has 129 states. [2018-07-25 13:29:07,993 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 506 transitions. [2018-07-25 13:29:07,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2018-07-25 13:29:07,994 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:07,994 INFO L354 BasicCegarLoop]: trace histogram [126, 125, 125, 124, 1, 1, 1, 1] [2018-07-25 13:29:07,994 INFO L415 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:07,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1033214955, now seen corresponding path program 187 times [2018-07-25 13:29:07,995 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:09,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:10,592 INFO L134 CoverageAnalysis]: Checked inductivity of 31250 backedges. 15750 proven. 15500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:29:10,593 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:10,593 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [251] total 251 [2018-07-25 13:29:10,593 INFO L451 AbstractCegarLoop]: Interpolant automaton has 252 states [2018-07-25 13:29:10,595 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 252 interpolants. [2018-07-25 13:29:10,598 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16001, Invalid=47251, Unknown=0, NotChecked=0, Total=63252 [2018-07-25 13:29:10,599 INFO L87 Difference]: Start difference. First operand 505 states and 506 transitions. Second operand 252 states. [2018-07-25 13:29:12,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:12,937 INFO L93 Difference]: Finished difference Result 761 states and 763 transitions. [2018-07-25 13:29:12,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 251 states. [2018-07-25 13:29:12,938 INFO L78 Accepts]: Start accepts. Automaton has 252 states. Word has length 504 [2018-07-25 13:29:12,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:12,938 INFO L225 Difference]: With dead ends: 761 [2018-07-25 13:29:12,938 INFO L226 Difference]: Without dead ends: 507 [2018-07-25 13:29:12,947 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 374 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23126 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=39375, Invalid=101625, Unknown=0, NotChecked=0, Total=141000 [2018-07-25 13:29:12,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2018-07-25 13:29:12,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 507. [2018-07-25 13:29:12,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2018-07-25 13:29:12,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 508 transitions. [2018-07-25 13:29:12,991 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 508 transitions. Word has length 504 [2018-07-25 13:29:12,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:12,992 INFO L472 AbstractCegarLoop]: Abstraction has 507 states and 508 transitions. [2018-07-25 13:29:12,992 INFO L473 AbstractCegarLoop]: Interpolant automaton has 252 states. [2018-07-25 13:29:12,992 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 508 transitions. [2018-07-25 13:29:12,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2018-07-25 13:29:12,993 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:12,993 INFO L354 BasicCegarLoop]: trace histogram [126, 126, 125, 125, 1, 1, 1, 1] [2018-07-25 13:29:12,994 INFO L415 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:12,994 INFO L82 PathProgramCache]: Analyzing trace with hash 422331111, now seen corresponding path program 188 times [2018-07-25 13:29:12,994 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy Received shutdown request... [2018-07-25 13:29:13,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:13,909 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Timeout exceeded at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:215) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:201) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:919) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:262) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.getInterpolants(ManagedScript.java:193) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:284) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:204) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:210) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.FixedRefinementStrategy.getTraceCheck(FixedRefinementStrategy.java:130) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:220) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:194) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:309) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:151) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:120) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-07-25 13:29:13,913 INFO L168 Benchmark]: Toolchain (without parser) took 250924.47 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.5 GB in the beginning and 2.7 GB in the end (delta: -1.2 GB). Peak memory consumption was 793.3 MB. Max. memory is 7.1 GB. [2018-07-25 13:29:13,915 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.14 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 13:29:13,916 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.36 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 13:29:13,916 INFO L168 Benchmark]: Boogie Preprocessor took 23.48 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 13:29:13,916 INFO L168 Benchmark]: RCFGBuilder took 262.69 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-25 13:29:13,917 INFO L168 Benchmark]: TraceAbstraction took 250593.51 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.5 GB in the beginning and 2.7 GB in the end (delta: -1.2 GB). Peak memory consumption was 782.7 MB. Max. memory is 7.1 GB. [2018-07-25 13:29:13,922 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.14 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 40.36 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 23.48 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. * RCFGBuilder took 262.69 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 250593.51 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 2.7 GB in the end (delta: -1.2 GB). Peak memory consumption was 782.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Timeout exceeded de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Timeout exceeded: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:215) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/fragtest_simple.i_4.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_13-29-13-941.csv Completed graceful shutdown