java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf -i ../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/HiddenEqualityWithBranches.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1cc990c [2018-10-01 01:02:05,521 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-01 01:02:05,522 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-01 01:02:05,534 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-10-01 01:02:05,582 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf [2018-10-01 01:02:05,609 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-01 01:02:05,610 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-01 01:02:05,610 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-01 01:02:05,611 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-01 01:02:05,611 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-01 01:02:05,612 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-01 01:02:05,612 INFO L133 SettingsManager]: * Use SBE=true [2018-10-01 01:02:05,613 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-01 01:02:05,613 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-01 01:02:05,613 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-01 01:02:05,613 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-01 01:02:05,613 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-01 01:02:05,614 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-01 01:02:05,614 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-01 01:02:05,614 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-01 01:02:05,614 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-01 01:02:05,614 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-01 01:02:05,616 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-01 01:02:05,616 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-01 01:02:05,616 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-01 01:02:05,616 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-01 01:02:05,616 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-01 01:02:05,617 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-01 01:02:05,617 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-01 01:02:05,617 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-01 01:02:05,617 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-01 01:02:05,617 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-01 01:02:05,618 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-01 01:02:05,618 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-01 01:02:05,618 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-01 01:02:05,618 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-01 01:02:05,660 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-01 01:02:05,672 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-01 01:02:05,676 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-01 01:02:05,677 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-01 01:02:05,678 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-01 01:02:05,678 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/HiddenEqualityWithBranches.bpl [2018-10-01 01:02:05,679 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/HiddenEqualityWithBranches.bpl' [2018-10-01 01:02:05,721 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-01 01:02:05,725 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-01 01:02:05,725 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-01 01:02:05,726 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-01 01:02:05,726 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-01 01:02:05,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "HiddenEqualityWithBranches.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:02:05" (1/1) ... [2018-10-01 01:02:05,757 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "HiddenEqualityWithBranches.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:02:05" (1/1) ... [2018-10-01 01:02:05,762 WARN L165 Inliner]: Program contained no entry procedure! [2018-10-01 01:02:05,762 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-10-01 01:02:05,762 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-10-01 01:02:05,765 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-01 01:02:05,765 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-01 01:02:05,766 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-01 01:02:05,766 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-01 01:02:05,776 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "HiddenEqualityWithBranches.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:02:05" (1/1) ... [2018-10-01 01:02:05,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "HiddenEqualityWithBranches.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:02:05" (1/1) ... [2018-10-01 01:02:05,777 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "HiddenEqualityWithBranches.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:02:05" (1/1) ... [2018-10-01 01:02:05,777 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "HiddenEqualityWithBranches.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:02:05" (1/1) ... [2018-10-01 01:02:05,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "HiddenEqualityWithBranches.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:02:05" (1/1) ... [2018-10-01 01:02:05,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "HiddenEqualityWithBranches.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:02:05" (1/1) ... [2018-10-01 01:02:05,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "HiddenEqualityWithBranches.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:02:05" (1/1) ... [2018-10-01 01:02:05,785 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-01 01:02:05,786 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-01 01:02:05,786 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-01 01:02:05,786 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-01 01:02:05,787 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "HiddenEqualityWithBranches.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:02:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-01 01:02:05,844 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2018-10-01 01:02:05,845 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-01 01:02:05,845 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-01 01:02:06,069 INFO L345 CfgBuilder]: Using library mode [2018-10-01 01:02:06,070 INFO L202 PluginConnector]: Adding new model HiddenEqualityWithBranches.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.10 01:02:06 BoogieIcfgContainer [2018-10-01 01:02:06,070 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-01 01:02:06,071 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-01 01:02:06,071 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-01 01:02:06,075 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-01 01:02:06,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "HiddenEqualityWithBranches.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:02:05" (1/2) ... [2018-10-01 01:02:06,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49fa4042 and model type HiddenEqualityWithBranches.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.10 01:02:06, skipping insertion in model container [2018-10-01 01:02:06,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "HiddenEqualityWithBranches.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.10 01:02:06" (2/2) ... [2018-10-01 01:02:06,079 INFO L112 eAbstractionObserver]: Analyzing ICFG HiddenEqualityWithBranches.bpl [2018-10-01 01:02:06,088 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-01 01:02:06,101 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-01 01:02:06,157 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-01 01:02:06,157 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-01 01:02:06,158 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-01 01:02:06,158 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-01 01:02:06,158 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-01 01:02:06,158 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-01 01:02:06,158 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-01 01:02:06,159 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-01 01:02:06,159 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-01 01:02:06,176 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2018-10-01 01:02:06,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2018-10-01 01:02:06,186 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:06,187 INFO L375 BasicCegarLoop]: trace histogram [1, 1] [2018-10-01 01:02:06,188 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:06,196 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:06,197 INFO L82 PathProgramCache]: Analyzing trace with hash 979, now seen corresponding path program 1 times [2018-10-01 01:02:06,199 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:06,200 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:06,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:06,250 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:02:06,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:06,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:06,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:06,372 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-01 01:02:06,372 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-10-01 01:02:06,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-01 01:02:06,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-01 01:02:06,387 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:06,389 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2018-10-01 01:02:06,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:06,623 INFO L93 Difference]: Finished difference Result 17 states and 23 transitions. [2018-10-01 01:02:06,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-01 01:02:06,626 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2018-10-01 01:02:06,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:06,637 INFO L225 Difference]: With dead ends: 17 [2018-10-01 01:02:06,638 INFO L226 Difference]: Without dead ends: 7 [2018-10-01 01:02:06,641 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-10-01 01:02:06,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-10-01 01:02:06,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-10-01 01:02:06,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-10-01 01:02:06,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2018-10-01 01:02:06,675 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 9 transitions. Word has length 2 [2018-10-01 01:02:06,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:06,675 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 9 transitions. [2018-10-01 01:02:06,676 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-01 01:02:06,676 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 9 transitions. [2018-10-01 01:02:06,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-10-01 01:02:06,676 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:06,676 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2018-10-01 01:02:06,677 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:06,677 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:06,677 INFO L82 PathProgramCache]: Analyzing trace with hash 28757385, now seen corresponding path program 1 times [2018-10-01 01:02:06,677 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:06,677 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:06,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:06,679 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:02:06,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:06,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:06,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:06,730 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-01 01:02:06,730 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-01 01:02:06,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-01 01:02:06,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-01 01:02:06,732 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:06,732 INFO L87 Difference]: Start difference. First operand 7 states and 9 transitions. Second operand 3 states. [2018-10-01 01:02:06,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:06,789 INFO L93 Difference]: Finished difference Result 12 states and 17 transitions. [2018-10-01 01:02:06,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-01 01:02:06,790 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2018-10-01 01:02:06,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:06,791 INFO L225 Difference]: With dead ends: 12 [2018-10-01 01:02:06,791 INFO L226 Difference]: Without dead ends: 8 [2018-10-01 01:02:06,792 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-10-01 01:02:06,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-10-01 01:02:06,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-10-01 01:02:06,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-10-01 01:02:06,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2018-10-01 01:02:06,796 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 10 transitions. Word has length 5 [2018-10-01 01:02:06,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:06,796 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 10 transitions. [2018-10-01 01:02:06,796 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-01 01:02:06,796 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 10 transitions. [2018-10-01 01:02:06,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-10-01 01:02:06,797 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:06,797 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2018-10-01 01:02:06,797 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:06,797 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:06,798 INFO L82 PathProgramCache]: Analyzing trace with hash 28757447, now seen corresponding path program 1 times [2018-10-01 01:02:06,798 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:06,798 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:06,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:06,800 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:02:06,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:06,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:06,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:06,879 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:06,879 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:06,888 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:02:06,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:06,902 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:06,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:06,952 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:06,952 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2018-10-01 01:02:06,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-01 01:02:06,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-01 01:02:06,953 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:06,953 INFO L87 Difference]: Start difference. First operand 8 states and 10 transitions. Second operand 4 states. [2018-10-01 01:02:07,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:07,103 INFO L93 Difference]: Finished difference Result 14 states and 20 transitions. [2018-10-01 01:02:07,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-01 01:02:07,104 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2018-10-01 01:02:07,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:07,105 INFO L225 Difference]: With dead ends: 14 [2018-10-01 01:02:07,105 INFO L226 Difference]: Without dead ends: 10 [2018-10-01 01:02:07,105 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-10-01 01:02:07,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-10-01 01:02:07,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-10-01 01:02:07,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-10-01 01:02:07,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2018-10-01 01:02:07,109 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 5 [2018-10-01 01:02:07,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:07,109 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2018-10-01 01:02:07,109 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-01 01:02:07,109 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2018-10-01 01:02:07,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-01 01:02:07,110 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:07,110 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2018-10-01 01:02:07,110 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:07,111 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:07,111 INFO L82 PathProgramCache]: Analyzing trace with hash 2014203669, now seen corresponding path program 1 times [2018-10-01 01:02:07,111 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:07,111 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:07,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:07,112 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:02:07,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:07,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:07,178 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:07,179 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:07,179 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:07,192 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:02:07,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:07,206 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:07,391 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:07,412 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:07,412 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-10-01 01:02:07,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-01 01:02:07,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-01 01:02:07,413 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:07,413 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand 4 states. [2018-10-01 01:02:07,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:07,513 INFO L93 Difference]: Finished difference Result 15 states and 20 transitions. [2018-10-01 01:02:07,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-01 01:02:07,513 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-10-01 01:02:07,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:07,514 INFO L225 Difference]: With dead ends: 15 [2018-10-01 01:02:07,514 INFO L226 Difference]: Without dead ends: 11 [2018-10-01 01:02:07,514 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 01:02:07,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-01 01:02:07,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-01 01:02:07,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-01 01:02:07,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2018-10-01 01:02:07,519 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2018-10-01 01:02:07,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:07,519 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2018-10-01 01:02:07,519 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-01 01:02:07,519 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2018-10-01 01:02:07,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-01 01:02:07,520 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:07,520 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1] [2018-10-01 01:02:07,520 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:07,521 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:07,521 INFO L82 PathProgramCache]: Analyzing trace with hash 2014203731, now seen corresponding path program 2 times [2018-10-01 01:02:07,521 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:07,521 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:07,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:07,522 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:02:07,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:07,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:07,588 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:07,589 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:07,589 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:07,600 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:02:07,614 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:02:07,614 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:02:07,615 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:07,652 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:07,674 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:07,674 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-10-01 01:02:07,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-01 01:02:07,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-01 01:02:07,675 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:07,675 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand 5 states. [2018-10-01 01:02:07,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:07,854 INFO L93 Difference]: Finished difference Result 17 states and 23 transitions. [2018-10-01 01:02:07,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-01 01:02:07,855 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2018-10-01 01:02:07,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:07,856 INFO L225 Difference]: With dead ends: 17 [2018-10-01 01:02:07,857 INFO L226 Difference]: Without dead ends: 13 [2018-10-01 01:02:07,857 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-10-01 01:02:07,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-01 01:02:07,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-01 01:02:07,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-01 01:02:07,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2018-10-01 01:02:07,861 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 8 [2018-10-01 01:02:07,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:07,862 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2018-10-01 01:02:07,862 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-01 01:02:07,862 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2018-10-01 01:02:07,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-01 01:02:07,862 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:07,863 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1] [2018-10-01 01:02:07,863 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:07,863 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:07,863 INFO L82 PathProgramCache]: Analyzing trace with hash 154849801, now seen corresponding path program 2 times [2018-10-01 01:02:07,863 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:07,864 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:07,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:07,865 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:02:07,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:07,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:07,929 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:07,931 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:07,931 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:07,940 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:02:07,951 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:02:07,951 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:02:07,952 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:07,981 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:08,005 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:08,005 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-01 01:02:08,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-01 01:02:08,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-01 01:02:08,006 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:08,006 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 5 states. [2018-10-01 01:02:08,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:08,074 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2018-10-01 01:02:08,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-01 01:02:08,074 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-10-01 01:02:08,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:08,076 INFO L225 Difference]: With dead ends: 18 [2018-10-01 01:02:08,076 INFO L226 Difference]: Without dead ends: 14 [2018-10-01 01:02:08,076 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-10-01 01:02:08,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-01 01:02:08,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-01 01:02:08,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-01 01:02:08,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2018-10-01 01:02:08,080 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 11 [2018-10-01 01:02:08,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:08,080 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2018-10-01 01:02:08,080 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-01 01:02:08,080 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2018-10-01 01:02:08,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-01 01:02:08,081 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:08,081 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1] [2018-10-01 01:02:08,081 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:08,082 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:08,082 INFO L82 PathProgramCache]: Analyzing trace with hash 154849863, now seen corresponding path program 3 times [2018-10-01 01:02:08,082 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:08,082 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:08,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:08,083 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:02:08,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:08,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:08,137 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:08,137 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:08,137 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:08,145 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:02:08,186 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-01 01:02:08,186 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:02:08,188 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:08,416 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:08,450 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:08,450 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-01 01:02:08,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-01 01:02:08,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-01 01:02:08,451 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:08,451 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 6 states. [2018-10-01 01:02:08,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:08,745 INFO L93 Difference]: Finished difference Result 20 states and 26 transitions. [2018-10-01 01:02:08,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-01 01:02:08,746 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2018-10-01 01:02:08,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:08,747 INFO L225 Difference]: With dead ends: 20 [2018-10-01 01:02:08,747 INFO L226 Difference]: Without dead ends: 16 [2018-10-01 01:02:08,748 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 01:02:08,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-10-01 01:02:08,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-10-01 01:02:08,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-10-01 01:02:08,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2018-10-01 01:02:08,752 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 11 [2018-10-01 01:02:08,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:08,752 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2018-10-01 01:02:08,752 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-01 01:02:08,752 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2018-10-01 01:02:08,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-01 01:02:08,753 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:08,753 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1] [2018-10-01 01:02:08,753 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:08,753 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:08,753 INFO L82 PathProgramCache]: Analyzing trace with hash 336984725, now seen corresponding path program 3 times [2018-10-01 01:02:08,754 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:08,754 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:08,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:08,755 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:02:08,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:08,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:08,831 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:08,832 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:08,832 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:08,841 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:02:08,854 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-10-01 01:02:08,855 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:02:08,857 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:08,948 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:08,970 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:08,970 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2018-10-01 01:02:08,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-01 01:02:08,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-01 01:02:08,971 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:08,971 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 11 states. [2018-10-01 01:02:09,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:09,334 INFO L93 Difference]: Finished difference Result 23 states and 30 transitions. [2018-10-01 01:02:09,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-01 01:02:09,335 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2018-10-01 01:02:09,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:09,336 INFO L225 Difference]: With dead ends: 23 [2018-10-01 01:02:09,336 INFO L226 Difference]: Without dead ends: 19 [2018-10-01 01:02:09,336 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 01:02:09,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-01 01:02:09,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-01 01:02:09,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-01 01:02:09,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2018-10-01 01:02:09,340 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 14 [2018-10-01 01:02:09,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:09,341 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2018-10-01 01:02:09,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-01 01:02:09,341 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2018-10-01 01:02:09,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-01 01:02:09,342 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:09,342 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1] [2018-10-01 01:02:09,342 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:09,342 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:09,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1774810761, now seen corresponding path program 4 times [2018-10-01 01:02:09,343 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:09,343 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:09,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:09,344 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:02:09,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:09,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:09,410 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:09,410 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:09,411 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:09,419 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:02:09,438 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:02:09,439 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:02:09,440 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:09,558 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:09,579 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:09,579 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-01 01:02:09,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-01 01:02:09,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-01 01:02:09,580 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:09,580 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 7 states. [2018-10-01 01:02:09,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:09,778 INFO L93 Difference]: Finished difference Result 24 states and 29 transitions. [2018-10-01 01:02:09,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-01 01:02:09,779 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2018-10-01 01:02:09,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:09,780 INFO L225 Difference]: With dead ends: 24 [2018-10-01 01:02:09,780 INFO L226 Difference]: Without dead ends: 20 [2018-10-01 01:02:09,781 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 01:02:09,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-10-01 01:02:09,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-10-01 01:02:09,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-01 01:02:09,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2018-10-01 01:02:09,786 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 17 [2018-10-01 01:02:09,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:09,786 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2018-10-01 01:02:09,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-01 01:02:09,787 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2018-10-01 01:02:09,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-01 01:02:09,787 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:09,788 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1] [2018-10-01 01:02:09,788 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:09,788 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:09,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1774810823, now seen corresponding path program 4 times [2018-10-01 01:02:09,788 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:09,789 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:09,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:09,790 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:02:09,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:09,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:09,860 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:09,861 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:09,861 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:09,871 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:02:09,902 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:02:09,903 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:02:09,904 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:09,975 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:10,003 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:10,003 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-01 01:02:10,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-01 01:02:10,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-01 01:02:10,004 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:10,004 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 8 states. [2018-10-01 01:02:10,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:10,078 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2018-10-01 01:02:10,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-01 01:02:10,078 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2018-10-01 01:02:10,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:10,079 INFO L225 Difference]: With dead ends: 26 [2018-10-01 01:02:10,080 INFO L226 Difference]: Without dead ends: 22 [2018-10-01 01:02:10,080 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 01:02:10,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-10-01 01:02:10,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-10-01 01:02:10,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-01 01:02:10,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2018-10-01 01:02:10,086 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 17 [2018-10-01 01:02:10,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:10,087 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2018-10-01 01:02:10,087 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-01 01:02:10,087 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2018-10-01 01:02:10,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-01 01:02:10,088 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:10,088 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 5, 1, 1, 1] [2018-10-01 01:02:10,088 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:10,088 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:10,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1953561067, now seen corresponding path program 5 times [2018-10-01 01:02:10,088 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:10,089 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:10,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:10,089 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:02:10,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:10,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:10,161 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:10,161 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:10,161 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:10,170 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:02:10,185 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-10-01 01:02:10,186 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:02:10,188 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:10,264 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:10,285 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:10,286 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-01 01:02:10,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-01 01:02:10,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-01 01:02:10,286 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:10,286 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 8 states. [2018-10-01 01:02:10,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:10,439 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2018-10-01 01:02:10,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-01 01:02:10,440 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2018-10-01 01:02:10,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:10,441 INFO L225 Difference]: With dead ends: 27 [2018-10-01 01:02:10,441 INFO L226 Difference]: Without dead ends: 23 [2018-10-01 01:02:10,441 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 01:02:10,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-01 01:02:10,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-01 01:02:10,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-01 01:02:10,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2018-10-01 01:02:10,445 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 20 [2018-10-01 01:02:10,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:10,445 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2018-10-01 01:02:10,445 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-01 01:02:10,445 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2018-10-01 01:02:10,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-01 01:02:10,446 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:10,446 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1] [2018-10-01 01:02:10,446 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:10,446 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:10,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1953561005, now seen corresponding path program 5 times [2018-10-01 01:02:10,447 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:10,447 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:10,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:10,448 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:02:10,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:10,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:10,528 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:10,528 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:10,529 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:10,536 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:02:10,555 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-10-01 01:02:10,555 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:02:10,558 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:10,617 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:10,638 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:10,638 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-01 01:02:10,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-01 01:02:10,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-01 01:02:10,639 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:10,639 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 9 states. [2018-10-01 01:02:10,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:10,731 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2018-10-01 01:02:10,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-01 01:02:10,732 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2018-10-01 01:02:10,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:10,733 INFO L225 Difference]: With dead ends: 29 [2018-10-01 01:02:10,733 INFO L226 Difference]: Without dead ends: 25 [2018-10-01 01:02:10,733 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 01:02:10,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-01 01:02:10,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-10-01 01:02:10,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-01 01:02:10,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2018-10-01 01:02:10,738 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 20 [2018-10-01 01:02:10,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:10,739 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2018-10-01 01:02:10,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-01 01:02:10,739 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2018-10-01 01:02:10,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-01 01:02:10,740 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:10,740 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 6, 1, 1, 1] [2018-10-01 01:02:10,740 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:10,740 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:10,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1729447159, now seen corresponding path program 6 times [2018-10-01 01:02:10,740 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:10,740 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:10,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:10,741 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:02:10,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:10,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:10,834 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 7 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:10,834 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:10,834 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:10,842 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:02:10,854 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-10-01 01:02:10,854 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:02:10,857 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:10,971 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:10,992 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:10,992 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2018-10-01 01:02:10,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-01 01:02:10,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-01 01:02:10,993 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:10,993 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 17 states. [2018-10-01 01:02:11,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:11,527 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2018-10-01 01:02:11,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-01 01:02:11,527 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 23 [2018-10-01 01:02:11,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:11,529 INFO L225 Difference]: With dead ends: 32 [2018-10-01 01:02:11,529 INFO L226 Difference]: Without dead ends: 28 [2018-10-01 01:02:11,529 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 01:02:11,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-10-01 01:02:11,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-10-01 01:02:11,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-01 01:02:11,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2018-10-01 01:02:11,534 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 23 [2018-10-01 01:02:11,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:11,535 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2018-10-01 01:02:11,535 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-01 01:02:11,535 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2018-10-01 01:02:11,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-01 01:02:11,536 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:11,536 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 7, 1, 1, 1] [2018-10-01 01:02:11,536 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:11,536 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:11,537 INFO L82 PathProgramCache]: Analyzing trace with hash 468808085, now seen corresponding path program 7 times [2018-10-01 01:02:11,537 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:11,537 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:11,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:11,538 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:02:11,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:11,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:11,671 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 8 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:11,672 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:11,672 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:11,679 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:02:11,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:11,695 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:11,755 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 8 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:11,783 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:11,784 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-01 01:02:11,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-01 01:02:11,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-01 01:02:11,785 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:11,785 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 10 states. [2018-10-01 01:02:11,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:11,889 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2018-10-01 01:02:11,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-01 01:02:11,890 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2018-10-01 01:02:11,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:11,891 INFO L225 Difference]: With dead ends: 33 [2018-10-01 01:02:11,891 INFO L226 Difference]: Without dead ends: 29 [2018-10-01 01:02:11,892 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 01:02:11,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-01 01:02:11,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-10-01 01:02:11,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-10-01 01:02:11,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2018-10-01 01:02:11,896 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 26 [2018-10-01 01:02:11,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:11,897 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2018-10-01 01:02:11,897 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-01 01:02:11,897 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2018-10-01 01:02:11,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-01 01:02:11,898 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:11,898 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1] [2018-10-01 01:02:11,898 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:11,898 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:11,898 INFO L82 PathProgramCache]: Analyzing trace with hash 468808147, now seen corresponding path program 6 times [2018-10-01 01:02:11,899 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:11,899 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:11,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:11,900 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:02:11,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:11,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:12,011 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:12,012 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:12,012 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:12,042 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:02:12,072 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2018-10-01 01:02:12,072 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:02:12,075 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:12,154 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:12,175 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:12,176 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-01 01:02:12,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-01 01:02:12,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-01 01:02:12,177 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:12,177 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 11 states. [2018-10-01 01:02:12,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:12,316 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2018-10-01 01:02:12,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-01 01:02:12,316 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2018-10-01 01:02:12,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:12,317 INFO L225 Difference]: With dead ends: 35 [2018-10-01 01:02:12,317 INFO L226 Difference]: Without dead ends: 31 [2018-10-01 01:02:12,317 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 01:02:12,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-01 01:02:12,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-01 01:02:12,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-01 01:02:12,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2018-10-01 01:02:12,321 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 26 [2018-10-01 01:02:12,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:12,321 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2018-10-01 01:02:12,321 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-01 01:02:12,321 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2018-10-01 01:02:12,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-01 01:02:12,322 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:12,322 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 8, 1, 1, 1] [2018-10-01 01:02:12,323 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:12,323 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:12,323 INFO L82 PathProgramCache]: Analyzing trace with hash -970547319, now seen corresponding path program 8 times [2018-10-01 01:02:12,323 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:12,323 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:12,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:12,324 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:02:12,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:12,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:12,406 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 9 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:12,406 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:12,407 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:12,415 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:02:12,455 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:02:12,456 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:02:12,457 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:12,790 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 9 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:12,810 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:12,810 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-01 01:02:12,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-01 01:02:12,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-01 01:02:12,811 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:12,811 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 11 states. [2018-10-01 01:02:12,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:12,909 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2018-10-01 01:02:12,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-01 01:02:12,909 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2018-10-01 01:02:12,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:12,910 INFO L225 Difference]: With dead ends: 36 [2018-10-01 01:02:12,910 INFO L226 Difference]: Without dead ends: 32 [2018-10-01 01:02:12,910 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 01:02:12,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-10-01 01:02:12,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-10-01 01:02:12,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-01 01:02:12,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2018-10-01 01:02:12,915 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 29 [2018-10-01 01:02:12,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:12,915 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2018-10-01 01:02:12,915 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-01 01:02:12,915 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2018-10-01 01:02:12,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-01 01:02:12,916 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:12,916 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 1, 1] [2018-10-01 01:02:12,916 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:12,916 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:12,917 INFO L82 PathProgramCache]: Analyzing trace with hash -970547257, now seen corresponding path program 7 times [2018-10-01 01:02:12,917 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:12,917 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:12,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:12,918 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:02:12,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:12,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:13,025 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:13,025 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:13,025 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:13,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:02:13,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:13,056 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:13,121 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:13,142 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:13,143 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-01 01:02:13,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-01 01:02:13,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-01 01:02:13,143 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:13,143 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 12 states. [2018-10-01 01:02:13,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:13,245 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2018-10-01 01:02:13,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-01 01:02:13,245 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29 [2018-10-01 01:02:13,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:13,247 INFO L225 Difference]: With dead ends: 38 [2018-10-01 01:02:13,247 INFO L226 Difference]: Without dead ends: 34 [2018-10-01 01:02:13,247 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 01:02:13,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-10-01 01:02:13,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-10-01 01:02:13,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-01 01:02:13,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2018-10-01 01:02:13,252 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 29 [2018-10-01 01:02:13,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:13,252 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2018-10-01 01:02:13,252 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-01 01:02:13,252 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2018-10-01 01:02:13,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-01 01:02:13,253 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:13,253 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 9, 1, 1, 1] [2018-10-01 01:02:13,254 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:13,254 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:13,254 INFO L82 PathProgramCache]: Analyzing trace with hash 146095381, now seen corresponding path program 9 times [2018-10-01 01:02:13,254 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:13,254 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:13,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:13,255 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:02:13,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:13,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:13,575 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 10 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:13,576 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:13,576 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:13,583 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:02:13,712 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2018-10-01 01:02:13,713 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:02:13,715 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:14,142 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:14,164 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:14,164 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2018-10-01 01:02:14,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-01 01:02:14,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-01 01:02:14,165 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:14,165 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 23 states. [2018-10-01 01:02:14,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:14,937 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2018-10-01 01:02:14,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-01 01:02:14,938 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 32 [2018-10-01 01:02:14,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:14,939 INFO L225 Difference]: With dead ends: 41 [2018-10-01 01:02:14,939 INFO L226 Difference]: Without dead ends: 37 [2018-10-01 01:02:14,939 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:02:14,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-01 01:02:14,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-10-01 01:02:14,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-01 01:02:14,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2018-10-01 01:02:14,945 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 32 [2018-10-01 01:02:14,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:14,945 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2018-10-01 01:02:14,945 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-01 01:02:14,945 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2018-10-01 01:02:14,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-01 01:02:14,946 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:14,946 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 10, 1, 1, 1] [2018-10-01 01:02:14,946 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:14,946 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:14,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1527063561, now seen corresponding path program 10 times [2018-10-01 01:02:14,947 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:14,947 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:14,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:14,948 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:02:14,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:14,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:15,089 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 11 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:15,090 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:15,090 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:15,097 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:02:15,116 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:02:15,116 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:02:15,118 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:15,249 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:15,271 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:15,271 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2018-10-01 01:02:15,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-01 01:02:15,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-01 01:02:15,272 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:15,272 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 25 states. [2018-10-01 01:02:15,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:15,913 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2018-10-01 01:02:15,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-01 01:02:15,913 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 35 [2018-10-01 01:02:15,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:15,914 INFO L225 Difference]: With dead ends: 44 [2018-10-01 01:02:15,914 INFO L226 Difference]: Without dead ends: 40 [2018-10-01 01:02:15,914 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 01:02:15,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-10-01 01:02:15,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-10-01 01:02:15,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-10-01 01:02:15,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2018-10-01 01:02:15,920 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 35 [2018-10-01 01:02:15,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:15,920 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2018-10-01 01:02:15,920 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-01 01:02:15,920 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2018-10-01 01:02:15,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-01 01:02:15,921 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:15,921 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 11, 1, 1, 1] [2018-10-01 01:02:15,921 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:15,922 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:15,922 INFO L82 PathProgramCache]: Analyzing trace with hash 458385557, now seen corresponding path program 11 times [2018-10-01 01:02:15,922 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:15,922 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:15,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:15,923 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:02:15,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:15,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:16,018 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 12 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:16,018 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:16,018 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:16,025 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:02:16,065 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2018-10-01 01:02:16,065 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:02:16,067 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:16,338 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 12 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:16,359 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:16,360 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-10-01 01:02:16,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-01 01:02:16,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-01 01:02:16,360 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:16,360 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 14 states. [2018-10-01 01:02:16,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:16,468 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2018-10-01 01:02:16,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-01 01:02:16,468 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 38 [2018-10-01 01:02:16,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:16,469 INFO L225 Difference]: With dead ends: 45 [2018-10-01 01:02:16,469 INFO L226 Difference]: Without dead ends: 41 [2018-10-01 01:02:16,470 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 01:02:16,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-01 01:02:16,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-10-01 01:02:16,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-01 01:02:16,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2018-10-01 01:02:16,475 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 38 [2018-10-01 01:02:16,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:16,476 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2018-10-01 01:02:16,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-01 01:02:16,476 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2018-10-01 01:02:16,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-01 01:02:16,476 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:16,476 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 1, 1] [2018-10-01 01:02:16,477 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:16,478 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:16,478 INFO L82 PathProgramCache]: Analyzing trace with hash 458385619, now seen corresponding path program 8 times [2018-10-01 01:02:16,478 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:16,478 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:16,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:16,479 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:02:16,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:16,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:16,723 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:16,724 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:16,724 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:16,732 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:02:16,746 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:02:16,746 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:02:16,748 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:16,877 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:16,899 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:16,899 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-10-01 01:02:16,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-01 01:02:16,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-01 01:02:16,900 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:16,900 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 15 states. [2018-10-01 01:02:17,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:17,056 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2018-10-01 01:02:17,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-01 01:02:17,057 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 38 [2018-10-01 01:02:17,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:17,058 INFO L225 Difference]: With dead ends: 47 [2018-10-01 01:02:17,058 INFO L226 Difference]: Without dead ends: 43 [2018-10-01 01:02:17,059 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 01:02:17,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-01 01:02:17,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-10-01 01:02:17,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-01 01:02:17,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2018-10-01 01:02:17,064 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 38 [2018-10-01 01:02:17,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:17,064 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2018-10-01 01:02:17,065 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-01 01:02:17,065 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2018-10-01 01:02:17,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-01 01:02:17,065 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:17,066 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 12, 1, 1, 1] [2018-10-01 01:02:17,066 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:17,066 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:17,066 INFO L82 PathProgramCache]: Analyzing trace with hash 2064533641, now seen corresponding path program 12 times [2018-10-01 01:02:17,066 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:17,066 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:17,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:17,067 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:02:17,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:17,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:17,194 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 13 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:17,194 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:17,194 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:17,203 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:02:17,226 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2018-10-01 01:02:17,226 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:02:17,229 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:17,910 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:17,930 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:17,930 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2018-10-01 01:02:17,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-01 01:02:17,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-01 01:02:17,931 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:17,931 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 29 states. [2018-10-01 01:02:18,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:18,636 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2018-10-01 01:02:18,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-01 01:02:18,639 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 41 [2018-10-01 01:02:18,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:18,640 INFO L225 Difference]: With dead ends: 50 [2018-10-01 01:02:18,640 INFO L226 Difference]: Without dead ends: 46 [2018-10-01 01:02:18,641 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 01:02:18,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-10-01 01:02:18,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-10-01 01:02:18,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-10-01 01:02:18,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2018-10-01 01:02:18,654 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 41 [2018-10-01 01:02:18,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:18,654 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2018-10-01 01:02:18,655 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-01 01:02:18,655 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2018-10-01 01:02:18,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-01 01:02:18,655 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:18,656 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 13, 1, 1, 1] [2018-10-01 01:02:18,657 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:18,658 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:18,658 INFO L82 PathProgramCache]: Analyzing trace with hash 591459349, now seen corresponding path program 13 times [2018-10-01 01:02:18,658 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:18,658 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:18,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:18,659 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:02:18,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:18,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:19,283 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 14 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:19,283 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:19,283 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:19,292 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:02:19,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:19,315 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:19,397 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 14 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:19,419 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:19,419 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-10-01 01:02:19,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-01 01:02:19,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-01 01:02:19,420 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:19,420 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand 16 states. [2018-10-01 01:02:19,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:19,544 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2018-10-01 01:02:19,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-01 01:02:19,545 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 44 [2018-10-01 01:02:19,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:19,546 INFO L225 Difference]: With dead ends: 51 [2018-10-01 01:02:19,546 INFO L226 Difference]: Without dead ends: 47 [2018-10-01 01:02:19,546 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:02:19,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-01 01:02:19,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-01 01:02:19,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-01 01:02:19,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2018-10-01 01:02:19,550 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 44 [2018-10-01 01:02:19,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:19,550 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2018-10-01 01:02:19,550 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-01 01:02:19,550 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2018-10-01 01:02:19,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-01 01:02:19,551 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:19,551 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 14, 1, 1] [2018-10-01 01:02:19,551 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:19,551 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:19,552 INFO L82 PathProgramCache]: Analyzing trace with hash 591459411, now seen corresponding path program 9 times [2018-10-01 01:02:19,552 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:19,552 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:19,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:19,553 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:02:19,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:19,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:19,739 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:19,739 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:19,739 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:19,749 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:02:19,770 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2018-10-01 01:02:19,770 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:02:19,774 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:19,864 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:19,885 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:19,885 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-10-01 01:02:19,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-01 01:02:19,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-01 01:02:19,886 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:19,886 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 17 states. [2018-10-01 01:02:19,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:19,997 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2018-10-01 01:02:19,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-01 01:02:19,998 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 44 [2018-10-01 01:02:19,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:19,999 INFO L225 Difference]: With dead ends: 53 [2018-10-01 01:02:19,999 INFO L226 Difference]: Without dead ends: 49 [2018-10-01 01:02:20,000 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 01:02:20,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-01 01:02:20,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-10-01 01:02:20,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-01 01:02:20,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2018-10-01 01:02:20,003 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 44 [2018-10-01 01:02:20,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:20,003 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2018-10-01 01:02:20,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-01 01:02:20,004 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2018-10-01 01:02:20,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-01 01:02:20,004 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:20,004 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 14, 1, 1, 1] [2018-10-01 01:02:20,004 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:20,005 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:20,005 INFO L82 PathProgramCache]: Analyzing trace with hash -2083910391, now seen corresponding path program 14 times [2018-10-01 01:02:20,005 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:20,005 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:20,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:20,006 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:02:20,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:20,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:20,122 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 15 proven. 315 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:20,123 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:20,123 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:20,131 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:02:20,146 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:02:20,146 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:02:20,148 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:20,252 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 15 proven. 315 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:20,273 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:20,273 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-10-01 01:02:20,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-01 01:02:20,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-01 01:02:20,273 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:20,273 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand 17 states. [2018-10-01 01:02:20,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:20,427 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2018-10-01 01:02:20,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-01 01:02:20,427 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 47 [2018-10-01 01:02:20,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:20,427 INFO L225 Difference]: With dead ends: 54 [2018-10-01 01:02:20,428 INFO L226 Difference]: Without dead ends: 50 [2018-10-01 01:02:20,428 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 01:02:20,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-10-01 01:02:20,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-10-01 01:02:20,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-10-01 01:02:20,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2018-10-01 01:02:20,431 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 47 [2018-10-01 01:02:20,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:20,431 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2018-10-01 01:02:20,431 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-01 01:02:20,431 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2018-10-01 01:02:20,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-01 01:02:20,432 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:20,432 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 15, 1, 1] [2018-10-01 01:02:20,432 INFO L423 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:20,432 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:20,432 INFO L82 PathProgramCache]: Analyzing trace with hash -2083910329, now seen corresponding path program 10 times [2018-10-01 01:02:20,433 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:20,433 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:20,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:20,433 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:02:20,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:20,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:20,601 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:20,602 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:20,602 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:20,609 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:02:20,630 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:02:20,631 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:02:20,632 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:20,791 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:20,814 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:20,814 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-10-01 01:02:20,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-01 01:02:20,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-01 01:02:20,815 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:20,815 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand 18 states. [2018-10-01 01:02:20,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:20,958 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2018-10-01 01:02:20,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-01 01:02:20,959 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 47 [2018-10-01 01:02:20,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:20,960 INFO L225 Difference]: With dead ends: 56 [2018-10-01 01:02:20,960 INFO L226 Difference]: Without dead ends: 52 [2018-10-01 01:02:20,960 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 01:02:20,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-10-01 01:02:20,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-10-01 01:02:20,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-10-01 01:02:20,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2018-10-01 01:02:20,965 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 47 [2018-10-01 01:02:20,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:20,965 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2018-10-01 01:02:20,965 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-01 01:02:20,965 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2018-10-01 01:02:20,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-01 01:02:20,966 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:20,966 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 15, 1, 1, 1] [2018-10-01 01:02:20,966 INFO L423 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:20,966 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:20,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1979244437, now seen corresponding path program 15 times [2018-10-01 01:02:20,966 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:20,966 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:20,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:20,967 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:02:20,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:20,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:21,733 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 16 proven. 360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:21,733 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:21,733 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:21,741 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:02:21,810 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2018-10-01 01:02:21,810 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:02:21,814 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:22,043 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:22,064 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:22,064 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 34 [2018-10-01 01:02:22,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-01 01:02:22,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-01 01:02:22,065 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:22,065 INFO L87 Difference]: Start difference. First operand 52 states and 54 transitions. Second operand 35 states. [2018-10-01 01:02:23,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:23,080 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2018-10-01 01:02:23,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-01 01:02:23,080 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 50 [2018-10-01 01:02:23,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:23,081 INFO L225 Difference]: With dead ends: 59 [2018-10-01 01:02:23,081 INFO L226 Difference]: Without dead ends: 55 [2018-10-01 01:02:23,082 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 01:02:23,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-01 01:02:23,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-10-01 01:02:23,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-01 01:02:23,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2018-10-01 01:02:23,086 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 50 [2018-10-01 01:02:23,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:23,086 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2018-10-01 01:02:23,086 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-01 01:02:23,086 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2018-10-01 01:02:23,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-01 01:02:23,087 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:23,087 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 16, 1, 1, 1] [2018-10-01 01:02:23,087 INFO L423 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:23,087 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:23,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1933545079, now seen corresponding path program 16 times [2018-10-01 01:02:23,087 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:23,088 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:23,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:23,088 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:02:23,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:23,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:23,234 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 17 proven. 408 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:23,234 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:23,234 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:23,242 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:02:23,259 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:02:23,259 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:02:23,261 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:23,352 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 17 proven. 408 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:23,372 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:23,372 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-10-01 01:02:23,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-01 01:02:23,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-01 01:02:23,373 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:23,373 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 19 states. [2018-10-01 01:02:23,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:23,513 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2018-10-01 01:02:23,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-01 01:02:23,514 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 53 [2018-10-01 01:02:23,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:23,515 INFO L225 Difference]: With dead ends: 60 [2018-10-01 01:02:23,515 INFO L226 Difference]: Without dead ends: 56 [2018-10-01 01:02:23,515 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 01:02:23,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-10-01 01:02:23,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-10-01 01:02:23,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-10-01 01:02:23,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2018-10-01 01:02:23,518 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 53 [2018-10-01 01:02:23,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:23,519 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2018-10-01 01:02:23,519 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-01 01:02:23,519 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2018-10-01 01:02:23,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-01 01:02:23,519 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:23,519 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 17, 1, 1] [2018-10-01 01:02:23,519 INFO L423 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:23,519 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:23,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1933545017, now seen corresponding path program 11 times [2018-10-01 01:02:23,520 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:23,520 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:23,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:23,520 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:02:23,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:23,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:23,843 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 0 proven. 425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:23,843 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:23,843 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:23,851 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:02:23,878 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-10-01 01:02:23,878 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:02:23,880 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:24,033 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 0 proven. 425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:24,053 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:24,053 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-10-01 01:02:24,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-01 01:02:24,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-01 01:02:24,053 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:24,053 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand 20 states. [2018-10-01 01:02:24,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:24,212 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2018-10-01 01:02:24,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-01 01:02:24,212 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 53 [2018-10-01 01:02:24,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:24,213 INFO L225 Difference]: With dead ends: 62 [2018-10-01 01:02:24,213 INFO L226 Difference]: Without dead ends: 58 [2018-10-01 01:02:24,213 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:02:24,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-10-01 01:02:24,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-10-01 01:02:24,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-10-01 01:02:24,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2018-10-01 01:02:24,217 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 53 [2018-10-01 01:02:24,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:24,217 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2018-10-01 01:02:24,217 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-01 01:02:24,217 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2018-10-01 01:02:24,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-01 01:02:24,218 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:24,218 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 17, 1, 1, 1] [2018-10-01 01:02:24,218 INFO L423 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:24,218 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:24,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1861364501, now seen corresponding path program 17 times [2018-10-01 01:02:24,219 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:24,219 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:24,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:24,220 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:02:24,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:24,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:24,355 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 18 proven. 459 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:24,356 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:24,356 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:24,365 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:02:24,416 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2018-10-01 01:02:24,416 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:02:24,418 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:24,545 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 18 proven. 459 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:24,565 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:24,565 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-10-01 01:02:24,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-01 01:02:24,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-01 01:02:24,566 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:24,566 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand 20 states. [2018-10-01 01:02:24,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:24,719 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2018-10-01 01:02:24,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-01 01:02:24,720 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 56 [2018-10-01 01:02:24,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:24,721 INFO L225 Difference]: With dead ends: 63 [2018-10-01 01:02:24,721 INFO L226 Difference]: Without dead ends: 59 [2018-10-01 01:02:24,721 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 01:02:24,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-01 01:02:24,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-10-01 01:02:24,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-01 01:02:24,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2018-10-01 01:02:24,725 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 56 [2018-10-01 01:02:24,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:24,725 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2018-10-01 01:02:24,725 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-01 01:02:24,725 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2018-10-01 01:02:24,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-01 01:02:24,726 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:24,726 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 18, 1, 1] [2018-10-01 01:02:24,726 INFO L423 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:24,726 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:24,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1861364563, now seen corresponding path program 12 times [2018-10-01 01:02:24,727 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:24,727 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:24,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:24,727 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:02:24,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:24,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:24,871 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 0 proven. 477 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:24,871 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:24,871 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:24,879 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:02:24,911 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-10-01 01:02:24,911 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:02:24,912 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:25,212 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 0 proven. 477 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:25,232 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:25,232 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-10-01 01:02:25,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-01 01:02:25,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-01 01:02:25,233 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:25,233 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand 21 states. [2018-10-01 01:02:25,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:25,406 INFO L93 Difference]: Finished difference Result 65 states and 71 transitions. [2018-10-01 01:02:25,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-01 01:02:25,407 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 56 [2018-10-01 01:02:25,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:25,408 INFO L225 Difference]: With dead ends: 65 [2018-10-01 01:02:25,408 INFO L226 Difference]: Without dead ends: 61 [2018-10-01 01:02:25,408 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 01:02:25,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-10-01 01:02:25,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-10-01 01:02:25,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-10-01 01:02:25,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2018-10-01 01:02:25,412 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 56 [2018-10-01 01:02:25,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:25,412 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2018-10-01 01:02:25,412 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-01 01:02:25,412 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2018-10-01 01:02:25,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-01 01:02:25,413 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:25,413 INFO L375 BasicCegarLoop]: trace histogram [19, 19, 18, 1, 1, 1] [2018-10-01 01:02:25,413 INFO L423 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:25,414 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:25,414 INFO L82 PathProgramCache]: Analyzing trace with hash -411470327, now seen corresponding path program 18 times [2018-10-01 01:02:25,414 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:25,414 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:25,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:25,415 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:02:25,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:25,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:25,605 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 19 proven. 513 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:25,605 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:25,605 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:25,612 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:02:25,646 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2018-10-01 01:02:25,646 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:02:25,647 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:26,031 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:26,057 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:26,057 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 40 [2018-10-01 01:02:26,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-01 01:02:26,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-01 01:02:26,057 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:26,058 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand 41 states. [2018-10-01 01:02:26,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:26,967 INFO L93 Difference]: Finished difference Result 68 states and 75 transitions. [2018-10-01 01:02:26,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-01 01:02:26,967 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 59 [2018-10-01 01:02:26,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:26,968 INFO L225 Difference]: With dead ends: 68 [2018-10-01 01:02:26,969 INFO L226 Difference]: Without dead ends: 64 [2018-10-01 01:02:26,969 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 01:02:26,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-10-01 01:02:26,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-10-01 01:02:26,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-10-01 01:02:26,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions. [2018-10-01 01:02:26,973 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 59 [2018-10-01 01:02:26,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:26,973 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions. [2018-10-01 01:02:26,973 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-01 01:02:26,973 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions. [2018-10-01 01:02:26,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-01 01:02:26,974 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:26,974 INFO L375 BasicCegarLoop]: trace histogram [20, 20, 19, 1, 1, 1] [2018-10-01 01:02:26,974 INFO L423 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:26,974 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:26,975 INFO L82 PathProgramCache]: Analyzing trace with hash -274409835, now seen corresponding path program 19 times [2018-10-01 01:02:26,975 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:26,975 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:26,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:26,976 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:02:26,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:26,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:27,417 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 20 proven. 570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:27,417 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:27,417 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:27,427 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:02:27,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:27,446 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:27,535 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 20 proven. 570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:27,556 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:27,556 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-10-01 01:02:27,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-01 01:02:27,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-01 01:02:27,557 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:27,557 INFO L87 Difference]: Start difference. First operand 64 states and 66 transitions. Second operand 22 states. [2018-10-01 01:02:27,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:27,739 INFO L93 Difference]: Finished difference Result 69 states and 74 transitions. [2018-10-01 01:02:27,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-01 01:02:27,739 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 62 [2018-10-01 01:02:27,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:27,740 INFO L225 Difference]: With dead ends: 69 [2018-10-01 01:02:27,741 INFO L226 Difference]: Without dead ends: 65 [2018-10-01 01:02:27,741 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:02:27,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-10-01 01:02:27,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-10-01 01:02:27,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-10-01 01:02:27,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2018-10-01 01:02:27,745 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 62 [2018-10-01 01:02:27,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:27,745 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2018-10-01 01:02:27,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-01 01:02:27,745 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2018-10-01 01:02:27,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-01 01:02:27,746 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:27,746 INFO L375 BasicCegarLoop]: trace histogram [20, 20, 20, 1, 1] [2018-10-01 01:02:27,746 INFO L423 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:27,746 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:27,746 INFO L82 PathProgramCache]: Analyzing trace with hash -274409773, now seen corresponding path program 13 times [2018-10-01 01:02:27,746 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:27,746 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:27,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:27,747 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:02:27,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:27,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:27,914 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 0 proven. 590 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:27,914 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:27,914 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:27,921 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:02:27,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:27,940 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:28,032 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 0 proven. 590 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:28,052 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:28,052 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-10-01 01:02:28,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-01 01:02:28,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-01 01:02:28,053 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:28,053 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand 23 states. [2018-10-01 01:02:28,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:28,167 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2018-10-01 01:02:28,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-01 01:02:28,168 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 62 [2018-10-01 01:02:28,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:28,169 INFO L225 Difference]: With dead ends: 71 [2018-10-01 01:02:28,169 INFO L226 Difference]: Without dead ends: 67 [2018-10-01 01:02:28,169 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 01:02:28,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-10-01 01:02:28,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-10-01 01:02:28,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-10-01 01:02:28,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 69 transitions. [2018-10-01 01:02:28,172 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 69 transitions. Word has length 62 [2018-10-01 01:02:28,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:28,172 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 69 transitions. [2018-10-01 01:02:28,172 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-01 01:02:28,172 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 69 transitions. [2018-10-01 01:02:28,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-10-01 01:02:28,172 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:28,172 INFO L375 BasicCegarLoop]: trace histogram [21, 21, 20, 1, 1, 1] [2018-10-01 01:02:28,173 INFO L423 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:28,173 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:28,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1619191159, now seen corresponding path program 20 times [2018-10-01 01:02:28,173 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:28,173 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:28,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:28,174 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:02:28,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:28,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:28,419 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 21 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:28,419 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:28,419 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:28,426 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:02:28,444 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:02:28,445 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:02:28,446 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:28,561 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 21 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:28,581 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:28,581 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-10-01 01:02:28,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-01 01:02:28,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-01 01:02:28,582 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:28,582 INFO L87 Difference]: Start difference. First operand 67 states and 69 transitions. Second operand 23 states. [2018-10-01 01:02:28,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:28,764 INFO L93 Difference]: Finished difference Result 72 states and 77 transitions. [2018-10-01 01:02:28,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-01 01:02:28,764 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 65 [2018-10-01 01:02:28,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:28,765 INFO L225 Difference]: With dead ends: 72 [2018-10-01 01:02:28,766 INFO L226 Difference]: Without dead ends: 68 [2018-10-01 01:02:28,766 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 01:02:28,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-10-01 01:02:28,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-10-01 01:02:28,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-10-01 01:02:28,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 70 transitions. [2018-10-01 01:02:28,769 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 70 transitions. Word has length 65 [2018-10-01 01:02:28,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:28,770 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 70 transitions. [2018-10-01 01:02:28,770 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-01 01:02:28,770 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 70 transitions. [2018-10-01 01:02:28,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-10-01 01:02:28,770 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:28,770 INFO L375 BasicCegarLoop]: trace histogram [21, 21, 21, 1, 1] [2018-10-01 01:02:28,771 INFO L423 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:28,771 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:28,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1619191097, now seen corresponding path program 14 times [2018-10-01 01:02:28,771 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:28,771 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:28,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:28,772 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:02:28,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:28,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:28,909 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:28,909 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:28,909 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:28,918 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:02:28,940 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:02:28,940 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:02:28,941 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:29,043 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:29,062 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:29,063 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-10-01 01:02:29,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-01 01:02:29,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-01 01:02:29,063 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:29,063 INFO L87 Difference]: Start difference. First operand 68 states and 70 transitions. Second operand 24 states. [2018-10-01 01:02:29,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:29,158 INFO L93 Difference]: Finished difference Result 74 states and 80 transitions. [2018-10-01 01:02:29,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-01 01:02:29,158 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 65 [2018-10-01 01:02:29,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:29,160 INFO L225 Difference]: With dead ends: 74 [2018-10-01 01:02:29,160 INFO L226 Difference]: Without dead ends: 70 [2018-10-01 01:02:29,160 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 01:02:29,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-10-01 01:02:29,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-10-01 01:02:29,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-10-01 01:02:29,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 72 transitions. [2018-10-01 01:02:29,163 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 72 transitions. Word has length 65 [2018-10-01 01:02:29,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:29,163 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 72 transitions. [2018-10-01 01:02:29,164 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-01 01:02:29,164 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 72 transitions. [2018-10-01 01:02:29,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-01 01:02:29,164 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:29,164 INFO L375 BasicCegarLoop]: trace histogram [22, 22, 21, 1, 1, 1] [2018-10-01 01:02:29,164 INFO L423 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:29,165 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:29,165 INFO L82 PathProgramCache]: Analyzing trace with hash -544677355, now seen corresponding path program 21 times [2018-10-01 01:02:29,165 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:29,165 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:29,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:29,166 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:02:29,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:29,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:29,569 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 22 proven. 693 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:29,570 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:29,570 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:29,577 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:02:29,616 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2018-10-01 01:02:29,616 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:02:29,618 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:29,852 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:29,871 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:29,871 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 46 [2018-10-01 01:02:29,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-01 01:02:29,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-01 01:02:29,872 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:29,872 INFO L87 Difference]: Start difference. First operand 70 states and 72 transitions. Second operand 47 states. [2018-10-01 01:02:31,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:31,213 INFO L93 Difference]: Finished difference Result 77 states and 84 transitions. [2018-10-01 01:02:31,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-01 01:02:31,213 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 68 [2018-10-01 01:02:31,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:31,214 INFO L225 Difference]: With dead ends: 77 [2018-10-01 01:02:31,214 INFO L226 Difference]: Without dead ends: 73 [2018-10-01 01:02:31,215 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 01:02:31,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-10-01 01:02:31,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-10-01 01:02:31,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-10-01 01:02:31,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2018-10-01 01:02:31,218 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 68 [2018-10-01 01:02:31,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:31,218 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2018-10-01 01:02:31,218 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-01 01:02:31,219 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2018-10-01 01:02:31,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-10-01 01:02:31,219 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:31,219 INFO L375 BasicCegarLoop]: trace histogram [23, 23, 22, 1, 1, 1] [2018-10-01 01:02:31,219 INFO L423 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:31,220 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:31,220 INFO L82 PathProgramCache]: Analyzing trace with hash -95199479, now seen corresponding path program 22 times [2018-10-01 01:02:31,220 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:31,220 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:31,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:31,221 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:02:31,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:31,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:31,722 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 23 proven. 759 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:31,722 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:31,723 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:31,734 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:02:31,759 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:02:31,760 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:02:31,761 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:32,165 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 0 proven. 782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:32,185 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:32,185 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 48 [2018-10-01 01:02:32,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-01 01:02:32,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-01 01:02:32,186 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:32,186 INFO L87 Difference]: Start difference. First operand 73 states and 75 transitions. Second operand 49 states. [2018-10-01 01:02:33,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:33,492 INFO L93 Difference]: Finished difference Result 80 states and 87 transitions. [2018-10-01 01:02:33,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-01 01:02:33,493 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 71 [2018-10-01 01:02:33,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:33,494 INFO L225 Difference]: With dead ends: 80 [2018-10-01 01:02:33,494 INFO L226 Difference]: Without dead ends: 76 [2018-10-01 01:02:33,494 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 01:02:33,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-10-01 01:02:33,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-10-01 01:02:33,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-10-01 01:02:33,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 78 transitions. [2018-10-01 01:02:33,497 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 78 transitions. Word has length 71 [2018-10-01 01:02:33,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:33,497 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 78 transitions. [2018-10-01 01:02:33,497 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-01 01:02:33,497 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 78 transitions. [2018-10-01 01:02:33,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-01 01:02:33,497 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:33,497 INFO L375 BasicCegarLoop]: trace histogram [24, 24, 23, 1, 1, 1] [2018-10-01 01:02:33,498 INFO L423 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:33,498 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:33,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1407824491, now seen corresponding path program 23 times [2018-10-01 01:02:33,498 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:33,498 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:33,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:33,499 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:02:33,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:33,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:33,716 INFO L134 CoverageAnalysis]: Checked inductivity of 852 backedges. 24 proven. 828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:33,716 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:33,716 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:33,724 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:02:33,763 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2018-10-01 01:02:33,764 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:02:33,766 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:33,883 INFO L134 CoverageAnalysis]: Checked inductivity of 852 backedges. 24 proven. 828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:33,904 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:33,904 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-10-01 01:02:33,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-01 01:02:33,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-01 01:02:33,905 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:33,905 INFO L87 Difference]: Start difference. First operand 76 states and 78 transitions. Second operand 26 states. [2018-10-01 01:02:34,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:34,134 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2018-10-01 01:02:34,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-01 01:02:34,134 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 74 [2018-10-01 01:02:34,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:34,135 INFO L225 Difference]: With dead ends: 81 [2018-10-01 01:02:34,135 INFO L226 Difference]: Without dead ends: 77 [2018-10-01 01:02:34,136 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 01:02:34,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-10-01 01:02:34,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-10-01 01:02:34,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-10-01 01:02:34,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 79 transitions. [2018-10-01 01:02:34,139 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 79 transitions. Word has length 74 [2018-10-01 01:02:34,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:34,139 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 79 transitions. [2018-10-01 01:02:34,139 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-01 01:02:34,139 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 79 transitions. [2018-10-01 01:02:34,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-01 01:02:34,140 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:34,140 INFO L375 BasicCegarLoop]: trace histogram [24, 24, 24, 1, 1] [2018-10-01 01:02:34,140 INFO L423 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:34,140 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:34,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1407824429, now seen corresponding path program 15 times [2018-10-01 01:02:34,141 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:34,141 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:34,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:34,141 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:02:34,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:34,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:34,347 INFO L134 CoverageAnalysis]: Checked inductivity of 852 backedges. 0 proven. 852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:34,347 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:34,347 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:34,354 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:02:34,395 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 25 check-sat command(s) [2018-10-01 01:02:34,395 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:02:34,396 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:34,559 INFO L134 CoverageAnalysis]: Checked inductivity of 852 backedges. 0 proven. 852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:34,579 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:34,579 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-10-01 01:02:34,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-01 01:02:34,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-01 01:02:34,580 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:34,580 INFO L87 Difference]: Start difference. First operand 77 states and 79 transitions. Second operand 27 states. [2018-10-01 01:02:34,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:34,807 INFO L93 Difference]: Finished difference Result 83 states and 89 transitions. [2018-10-01 01:02:34,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-01 01:02:34,807 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 74 [2018-10-01 01:02:34,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:34,808 INFO L225 Difference]: With dead ends: 83 [2018-10-01 01:02:34,808 INFO L226 Difference]: Without dead ends: 79 [2018-10-01 01:02:34,809 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 01:02:34,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-10-01 01:02:34,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-10-01 01:02:34,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-10-01 01:02:34,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 81 transitions. [2018-10-01 01:02:34,812 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 81 transitions. Word has length 74 [2018-10-01 01:02:34,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:34,812 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 81 transitions. [2018-10-01 01:02:34,812 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-01 01:02:34,812 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 81 transitions. [2018-10-01 01:02:34,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-10-01 01:02:34,812 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:34,813 INFO L375 BasicCegarLoop]: trace histogram [25, 25, 24, 1, 1, 1] [2018-10-01 01:02:34,813 INFO L423 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:34,813 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:34,813 INFO L82 PathProgramCache]: Analyzing trace with hash -142326903, now seen corresponding path program 24 times [2018-10-01 01:02:34,813 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:34,813 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:34,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:34,814 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:02:34,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:34,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:35,080 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 25 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:35,080 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:35,080 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:35,087 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:02:35,132 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) [2018-10-01 01:02:35,132 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:02:35,134 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:35,385 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 0 proven. 925 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:35,405 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:35,405 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 52 [2018-10-01 01:02:35,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-01 01:02:35,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-01 01:02:35,406 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:35,406 INFO L87 Difference]: Start difference. First operand 79 states and 81 transitions. Second operand 53 states. [2018-10-01 01:02:36,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:36,938 INFO L93 Difference]: Finished difference Result 86 states and 93 transitions. [2018-10-01 01:02:36,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-01 01:02:36,939 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 77 [2018-10-01 01:02:36,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:36,940 INFO L225 Difference]: With dead ends: 86 [2018-10-01 01:02:36,940 INFO L226 Difference]: Without dead ends: 82 [2018-10-01 01:02:36,940 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 01:02:36,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-10-01 01:02:36,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2018-10-01 01:02:36,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-10-01 01:02:36,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 84 transitions. [2018-10-01 01:02:36,944 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 84 transitions. Word has length 77 [2018-10-01 01:02:36,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:36,944 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 84 transitions. [2018-10-01 01:02:36,945 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-01 01:02:36,945 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 84 transitions. [2018-10-01 01:02:36,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-10-01 01:02:36,945 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:36,945 INFO L375 BasicCegarLoop]: trace histogram [26, 26, 25, 1, 1, 1] [2018-10-01 01:02:36,945 INFO L423 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:36,945 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:36,945 INFO L82 PathProgramCache]: Analyzing trace with hash -926607083, now seen corresponding path program 25 times [2018-10-01 01:02:36,946 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:36,946 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:36,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:36,946 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:02:36,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:36,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:37,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1001 backedges. 26 proven. 975 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:37,163 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:37,163 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:37,183 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:02:37,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:37,209 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:37,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1001 backedges. 26 proven. 975 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:37,354 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:37,354 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-10-01 01:02:37,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-01 01:02:37,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-01 01:02:37,354 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:37,355 INFO L87 Difference]: Start difference. First operand 82 states and 84 transitions. Second operand 28 states. [2018-10-01 01:02:37,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:37,592 INFO L93 Difference]: Finished difference Result 87 states and 92 transitions. [2018-10-01 01:02:37,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-01 01:02:37,592 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 80 [2018-10-01 01:02:37,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:37,593 INFO L225 Difference]: With dead ends: 87 [2018-10-01 01:02:37,594 INFO L226 Difference]: Without dead ends: 83 [2018-10-01 01:02:37,594 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 01:02:37,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-10-01 01:02:37,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-10-01 01:02:37,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-10-01 01:02:37,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 85 transitions. [2018-10-01 01:02:37,598 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 85 transitions. Word has length 80 [2018-10-01 01:02:37,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:37,598 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 85 transitions. [2018-10-01 01:02:37,598 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-01 01:02:37,598 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2018-10-01 01:02:37,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-10-01 01:02:37,599 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:37,599 INFO L375 BasicCegarLoop]: trace histogram [26, 26, 26, 1, 1] [2018-10-01 01:02:37,599 INFO L423 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:37,599 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:37,599 INFO L82 PathProgramCache]: Analyzing trace with hash -926607021, now seen corresponding path program 16 times [2018-10-01 01:02:37,599 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:37,599 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:37,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:37,600 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:02:37,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:37,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:37,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1001 backedges. 0 proven. 1001 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:37,764 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:37,764 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:37,771 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:02:37,796 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:02:37,796 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:02:37,798 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:37,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1001 backedges. 0 proven. 1001 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:37,939 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:37,939 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-10-01 01:02:37,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-01 01:02:37,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-01 01:02:37,940 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:37,940 INFO L87 Difference]: Start difference. First operand 83 states and 85 transitions. Second operand 29 states. [2018-10-01 01:02:38,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:38,096 INFO L93 Difference]: Finished difference Result 89 states and 95 transitions. [2018-10-01 01:02:38,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-01 01:02:38,096 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 80 [2018-10-01 01:02:38,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:38,097 INFO L225 Difference]: With dead ends: 89 [2018-10-01 01:02:38,097 INFO L226 Difference]: Without dead ends: 85 [2018-10-01 01:02:38,098 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 01:02:38,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-10-01 01:02:38,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-10-01 01:02:38,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-10-01 01:02:38,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 87 transitions. [2018-10-01 01:02:38,101 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 87 transitions. Word has length 80 [2018-10-01 01:02:38,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:38,102 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 87 transitions. [2018-10-01 01:02:38,102 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-01 01:02:38,102 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 87 transitions. [2018-10-01 01:02:38,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-10-01 01:02:38,102 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:38,102 INFO L375 BasicCegarLoop]: trace histogram [27, 27, 26, 1, 1, 1] [2018-10-01 01:02:38,103 INFO L423 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:38,103 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:38,103 INFO L82 PathProgramCache]: Analyzing trace with hash -795359223, now seen corresponding path program 26 times [2018-10-01 01:02:38,103 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:38,103 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:38,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:38,104 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:02:38,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:38,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:38,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1080 backedges. 27 proven. 1053 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:38,310 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:38,310 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:38,317 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:02:38,343 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:02:38,344 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:02:38,345 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:38,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1080 backedges. 27 proven. 1053 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:38,499 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:38,500 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-10-01 01:02:38,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-01 01:02:38,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-01 01:02:38,500 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:38,500 INFO L87 Difference]: Start difference. First operand 85 states and 87 transitions. Second operand 29 states. [2018-10-01 01:02:38,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:38,733 INFO L93 Difference]: Finished difference Result 90 states and 95 transitions. [2018-10-01 01:02:38,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-01 01:02:38,733 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 83 [2018-10-01 01:02:38,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:38,734 INFO L225 Difference]: With dead ends: 90 [2018-10-01 01:02:38,735 INFO L226 Difference]: Without dead ends: 86 [2018-10-01 01:02:38,735 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 01:02:38,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-10-01 01:02:38,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-10-01 01:02:38,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-10-01 01:02:38,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 88 transitions. [2018-10-01 01:02:38,737 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 88 transitions. Word has length 83 [2018-10-01 01:02:38,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:38,737 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 88 transitions. [2018-10-01 01:02:38,737 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-01 01:02:38,738 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 88 transitions. [2018-10-01 01:02:38,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-10-01 01:02:38,738 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:38,738 INFO L375 BasicCegarLoop]: trace histogram [27, 27, 27, 1, 1] [2018-10-01 01:02:38,738 INFO L423 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:38,738 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:38,739 INFO L82 PathProgramCache]: Analyzing trace with hash -795359161, now seen corresponding path program 17 times [2018-10-01 01:02:38,739 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:38,739 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:38,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:38,740 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:02:38,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:38,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:39,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1080 backedges. 0 proven. 1080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:39,251 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:39,251 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:39,258 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:02:39,301 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2018-10-01 01:02:39,301 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:02:39,304 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:39,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1080 backedges. 0 proven. 1080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:39,496 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:39,497 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-10-01 01:02:39,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-01 01:02:39,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-01 01:02:39,497 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:39,497 INFO L87 Difference]: Start difference. First operand 86 states and 88 transitions. Second operand 30 states. [2018-10-01 01:02:39,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:39,677 INFO L93 Difference]: Finished difference Result 92 states and 98 transitions. [2018-10-01 01:02:39,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-01 01:02:39,678 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 83 [2018-10-01 01:02:39,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:39,679 INFO L225 Difference]: With dead ends: 92 [2018-10-01 01:02:39,679 INFO L226 Difference]: Without dead ends: 88 [2018-10-01 01:02:39,679 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:02:39,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-10-01 01:02:39,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2018-10-01 01:02:39,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-10-01 01:02:39,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 90 transitions. [2018-10-01 01:02:39,682 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 90 transitions. Word has length 83 [2018-10-01 01:02:39,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:39,683 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 90 transitions. [2018-10-01 01:02:39,683 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-01 01:02:39,683 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 90 transitions. [2018-10-01 01:02:39,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-01 01:02:39,683 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:39,683 INFO L375 BasicCegarLoop]: trace histogram [28, 28, 27, 1, 1, 1] [2018-10-01 01:02:39,683 INFO L423 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:39,684 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:39,684 INFO L82 PathProgramCache]: Analyzing trace with hash 789398677, now seen corresponding path program 27 times [2018-10-01 01:02:39,684 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:39,684 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:39,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:39,684 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:02:39,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:39,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:39,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1162 backedges. 28 proven. 1134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:39,858 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:39,858 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:39,866 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:02:39,917 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) [2018-10-01 01:02:39,917 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:02:39,918 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:40,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1162 backedges. 0 proven. 1162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:40,233 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:40,234 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 58 [2018-10-01 01:02:40,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-01 01:02:40,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-01 01:02:40,234 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:40,234 INFO L87 Difference]: Start difference. First operand 88 states and 90 transitions. Second operand 59 states. [2018-10-01 01:02:42,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:42,118 INFO L93 Difference]: Finished difference Result 95 states and 102 transitions. [2018-10-01 01:02:42,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-01 01:02:42,118 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 86 [2018-10-01 01:02:42,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:42,119 INFO L225 Difference]: With dead ends: 95 [2018-10-01 01:02:42,119 INFO L226 Difference]: Without dead ends: 91 [2018-10-01 01:02:42,119 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 01:02:42,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-01 01:02:42,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-10-01 01:02:42,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-10-01 01:02:42,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 93 transitions. [2018-10-01 01:02:42,122 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 93 transitions. Word has length 86 [2018-10-01 01:02:42,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:42,122 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 93 transitions. [2018-10-01 01:02:42,122 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-01 01:02:42,122 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 93 transitions. [2018-10-01 01:02:42,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-10-01 01:02:42,122 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:42,122 INFO L375 BasicCegarLoop]: trace histogram [29, 29, 28, 1, 1, 1] [2018-10-01 01:02:42,123 INFO L423 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:42,123 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:42,123 INFO L82 PathProgramCache]: Analyzing trace with hash 2031479945, now seen corresponding path program 28 times [2018-10-01 01:02:42,123 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:42,123 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:42,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:42,124 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:02:42,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:42,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:42,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1247 backedges. 29 proven. 1218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:42,304 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:42,304 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:42,312 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:02:42,342 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:02:42,342 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:02:42,344 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:42,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1247 backedges. 29 proven. 1218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:42,530 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:42,530 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-10-01 01:02:42,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-01 01:02:42,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-01 01:02:42,531 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:42,531 INFO L87 Difference]: Start difference. First operand 91 states and 93 transitions. Second operand 31 states. [2018-10-01 01:02:42,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:42,825 INFO L93 Difference]: Finished difference Result 96 states and 101 transitions. [2018-10-01 01:02:42,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-01 01:02:42,825 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 89 [2018-10-01 01:02:42,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:42,826 INFO L225 Difference]: With dead ends: 96 [2018-10-01 01:02:42,826 INFO L226 Difference]: Without dead ends: 92 [2018-10-01 01:02:42,827 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 01:02:42,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-10-01 01:02:42,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2018-10-01 01:02:42,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-10-01 01:02:42,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 94 transitions. [2018-10-01 01:02:42,830 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 94 transitions. Word has length 89 [2018-10-01 01:02:42,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:42,830 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 94 transitions. [2018-10-01 01:02:42,830 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-01 01:02:42,830 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 94 transitions. [2018-10-01 01:02:42,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-10-01 01:02:42,831 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:42,831 INFO L375 BasicCegarLoop]: trace histogram [29, 29, 29, 1, 1] [2018-10-01 01:02:42,831 INFO L423 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:42,831 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:42,831 INFO L82 PathProgramCache]: Analyzing trace with hash 2031480007, now seen corresponding path program 18 times [2018-10-01 01:02:42,831 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:42,831 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:42,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:42,832 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:02:42,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:42,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:43,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1247 backedges. 0 proven. 1247 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:43,266 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:43,266 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:43,273 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:02:43,322 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 30 check-sat command(s) [2018-10-01 01:02:43,323 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:02:43,326 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:43,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1247 backedges. 0 proven. 1247 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:43,910 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:43,910 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-10-01 01:02:43,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-01 01:02:43,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-01 01:02:43,911 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:43,911 INFO L87 Difference]: Start difference. First operand 92 states and 94 transitions. Second operand 32 states. [2018-10-01 01:02:44,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:44,171 INFO L93 Difference]: Finished difference Result 98 states and 104 transitions. [2018-10-01 01:02:44,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-01 01:02:44,172 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 89 [2018-10-01 01:02:44,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:44,173 INFO L225 Difference]: With dead ends: 98 [2018-10-01 01:02:44,173 INFO L226 Difference]: Without dead ends: 94 [2018-10-01 01:02:44,173 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 01:02:44,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-10-01 01:02:44,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2018-10-01 01:02:44,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-10-01 01:02:44,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 96 transitions. [2018-10-01 01:02:44,177 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 96 transitions. Word has length 89 [2018-10-01 01:02:44,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:44,178 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 96 transitions. [2018-10-01 01:02:44,178 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-01 01:02:44,178 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 96 transitions. [2018-10-01 01:02:44,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-01 01:02:44,178 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:44,179 INFO L375 BasicCegarLoop]: trace histogram [30, 30, 29, 1, 1, 1] [2018-10-01 01:02:44,179 INFO L423 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:44,179 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:44,179 INFO L82 PathProgramCache]: Analyzing trace with hash -563687403, now seen corresponding path program 29 times [2018-10-01 01:02:44,179 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:44,179 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:44,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:44,180 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:02:44,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:44,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:44,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 30 proven. 1305 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:44,364 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:44,364 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:44,370 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:02:44,429 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2018-10-01 01:02:44,430 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:02:44,432 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:44,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 30 proven. 1305 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:44,594 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:44,594 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-10-01 01:02:44,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-01 01:02:44,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-01 01:02:44,595 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:44,595 INFO L87 Difference]: Start difference. First operand 94 states and 96 transitions. Second operand 32 states. [2018-10-01 01:02:44,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:44,933 INFO L93 Difference]: Finished difference Result 99 states and 104 transitions. [2018-10-01 01:02:44,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-01 01:02:44,934 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 92 [2018-10-01 01:02:44,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:44,935 INFO L225 Difference]: With dead ends: 99 [2018-10-01 01:02:44,935 INFO L226 Difference]: Without dead ends: 95 [2018-10-01 01:02:44,936 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 01:02:44,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-10-01 01:02:44,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-10-01 01:02:44,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-10-01 01:02:44,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 97 transitions. [2018-10-01 01:02:44,940 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 97 transitions. Word has length 92 [2018-10-01 01:02:44,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:44,940 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 97 transitions. [2018-10-01 01:02:44,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-01 01:02:44,940 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 97 transitions. [2018-10-01 01:02:44,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-01 01:02:44,941 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:44,941 INFO L375 BasicCegarLoop]: trace histogram [30, 30, 30, 1, 1] [2018-10-01 01:02:44,941 INFO L423 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:44,941 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:44,941 INFO L82 PathProgramCache]: Analyzing trace with hash -563687341, now seen corresponding path program 19 times [2018-10-01 01:02:44,941 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:44,942 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:44,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:44,942 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:02:44,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:44,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:45,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:45,924 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:45,924 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:45,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:02:45,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:45,963 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:46,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:46,244 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:46,244 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-10-01 01:02:46,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-01 01:02:46,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-01 01:02:46,245 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:46,245 INFO L87 Difference]: Start difference. First operand 95 states and 97 transitions. Second operand 33 states. [2018-10-01 01:02:46,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:46,579 INFO L93 Difference]: Finished difference Result 101 states and 107 transitions. [2018-10-01 01:02:46,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-01 01:02:46,580 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 92 [2018-10-01 01:02:46,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:46,581 INFO L225 Difference]: With dead ends: 101 [2018-10-01 01:02:46,581 INFO L226 Difference]: Without dead ends: 97 [2018-10-01 01:02:46,582 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 01:02:46,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-10-01 01:02:46,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-10-01 01:02:46,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-10-01 01:02:46,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 99 transitions. [2018-10-01 01:02:46,585 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 99 transitions. Word has length 92 [2018-10-01 01:02:46,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:46,585 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 99 transitions. [2018-10-01 01:02:46,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-01 01:02:46,585 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 99 transitions. [2018-10-01 01:02:46,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-01 01:02:46,585 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:46,585 INFO L375 BasicCegarLoop]: trace histogram [31, 31, 30, 1, 1, 1] [2018-10-01 01:02:46,586 INFO L423 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:46,586 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:46,586 INFO L82 PathProgramCache]: Analyzing trace with hash 512143625, now seen corresponding path program 30 times [2018-10-01 01:02:46,586 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:46,586 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:46,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:46,587 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:02:46,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:46,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:46,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 31 proven. 1395 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:46,973 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:46,973 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:46,980 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:02:47,036 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 32 check-sat command(s) [2018-10-01 01:02:47,036 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:02:47,038 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:47,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:47,434 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:47,434 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 64 [2018-10-01 01:02:47,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-01 01:02:47,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-01 01:02:47,435 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:47,435 INFO L87 Difference]: Start difference. First operand 97 states and 99 transitions. Second operand 65 states. [2018-10-01 01:02:49,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:49,173 INFO L93 Difference]: Finished difference Result 104 states and 111 transitions. [2018-10-01 01:02:49,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-01 01:02:49,173 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 95 [2018-10-01 01:02:49,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:49,175 INFO L225 Difference]: With dead ends: 104 [2018-10-01 01:02:49,175 INFO L226 Difference]: Without dead ends: 100 [2018-10-01 01:02:49,176 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 01:02:49,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-10-01 01:02:49,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2018-10-01 01:02:49,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-10-01 01:02:49,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 102 transitions. [2018-10-01 01:02:49,179 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 102 transitions. Word has length 95 [2018-10-01 01:02:49,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:49,180 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 102 transitions. [2018-10-01 01:02:49,180 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-01 01:02:49,180 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 102 transitions. [2018-10-01 01:02:49,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-01 01:02:49,180 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:49,181 INFO L375 BasicCegarLoop]: trace histogram [32, 32, 31, 1, 1, 1] [2018-10-01 01:02:49,181 INFO L423 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:49,181 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:49,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1548336021, now seen corresponding path program 31 times [2018-10-01 01:02:49,181 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:49,181 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:49,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:49,182 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:02:49,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:49,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 32 proven. 1488 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:49,558 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:49,558 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:49,566 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:02:49,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:49,597 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:49,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 32 proven. 1488 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:49,810 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:49,810 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-10-01 01:02:49,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-01 01:02:49,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-01 01:02:49,811 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:49,811 INFO L87 Difference]: Start difference. First operand 100 states and 102 transitions. Second operand 34 states. [2018-10-01 01:02:50,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:50,009 INFO L93 Difference]: Finished difference Result 105 states and 110 transitions. [2018-10-01 01:02:50,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-01 01:02:50,010 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 98 [2018-10-01 01:02:50,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:50,011 INFO L225 Difference]: With dead ends: 105 [2018-10-01 01:02:50,011 INFO L226 Difference]: Without dead ends: 101 [2018-10-01 01:02:50,011 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:02:50,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-10-01 01:02:50,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-10-01 01:02:50,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-10-01 01:02:50,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 103 transitions. [2018-10-01 01:02:50,016 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 103 transitions. Word has length 98 [2018-10-01 01:02:50,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:50,016 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 103 transitions. [2018-10-01 01:02:50,016 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-01 01:02:50,016 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 103 transitions. [2018-10-01 01:02:50,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-01 01:02:50,017 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:50,017 INFO L375 BasicCegarLoop]: trace histogram [32, 32, 32, 1, 1] [2018-10-01 01:02:50,017 INFO L423 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:50,017 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:50,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1548336083, now seen corresponding path program 20 times [2018-10-01 01:02:50,017 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:50,018 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:50,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:50,018 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:02:50,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:50,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:50,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 0 proven. 1520 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:50,303 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:50,303 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:50,312 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:02:50,344 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:02:50,344 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:02:50,346 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:50,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 0 proven. 1520 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:50,512 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:50,512 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-10-01 01:02:50,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-01 01:02:50,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-01 01:02:50,513 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:50,513 INFO L87 Difference]: Start difference. First operand 101 states and 103 transitions. Second operand 35 states. [2018-10-01 01:02:50,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:50,799 INFO L93 Difference]: Finished difference Result 107 states and 113 transitions. [2018-10-01 01:02:50,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-01 01:02:50,800 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 98 [2018-10-01 01:02:50,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:50,801 INFO L225 Difference]: With dead ends: 107 [2018-10-01 01:02:50,801 INFO L226 Difference]: Without dead ends: 103 [2018-10-01 01:02:50,801 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 01:02:50,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-10-01 01:02:50,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-10-01 01:02:50,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-10-01 01:02:50,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 105 transitions. [2018-10-01 01:02:50,806 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 105 transitions. Word has length 98 [2018-10-01 01:02:50,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:50,806 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 105 transitions. [2018-10-01 01:02:50,807 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-01 01:02:50,807 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 105 transitions. [2018-10-01 01:02:50,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-10-01 01:02:50,807 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:50,807 INFO L375 BasicCegarLoop]: trace histogram [33, 33, 32, 1, 1, 1] [2018-10-01 01:02:50,808 INFO L423 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:50,808 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:50,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1468918391, now seen corresponding path program 32 times [2018-10-01 01:02:50,808 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:50,808 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:50,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:50,809 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:02:50,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:50,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:51,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1617 backedges. 33 proven. 1584 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:51,465 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:51,465 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:51,473 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:02:51,525 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:02:51,526 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:02:51,528 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:51,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1617 backedges. 33 proven. 1584 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:51,768 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:51,768 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-10-01 01:02:51,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-01 01:02:51,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-01 01:02:51,769 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:51,769 INFO L87 Difference]: Start difference. First operand 103 states and 105 transitions. Second operand 35 states. [2018-10-01 01:02:51,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:51,960 INFO L93 Difference]: Finished difference Result 108 states and 113 transitions. [2018-10-01 01:02:51,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-01 01:02:51,960 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 101 [2018-10-01 01:02:51,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:51,961 INFO L225 Difference]: With dead ends: 108 [2018-10-01 01:02:51,962 INFO L226 Difference]: Without dead ends: 104 [2018-10-01 01:02:51,962 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:02:51,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-10-01 01:02:51,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2018-10-01 01:02:51,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-10-01 01:02:51,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 106 transitions. [2018-10-01 01:02:51,966 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 106 transitions. Word has length 101 [2018-10-01 01:02:51,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:51,967 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 106 transitions. [2018-10-01 01:02:51,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-01 01:02:51,967 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 106 transitions. [2018-10-01 01:02:51,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-10-01 01:02:51,968 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:51,968 INFO L375 BasicCegarLoop]: trace histogram [33, 33, 33, 1, 1] [2018-10-01 01:02:51,968 INFO L423 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:51,968 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:51,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1468918329, now seen corresponding path program 21 times [2018-10-01 01:02:51,968 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:51,968 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:51,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:51,969 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:02:51,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:51,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:52,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1617 backedges. 0 proven. 1617 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:52,247 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:52,247 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:52,254 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:02:52,313 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2018-10-01 01:02:52,314 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:02:52,317 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:52,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1617 backedges. 0 proven. 1617 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:52,518 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:52,518 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-10-01 01:02:52,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-01 01:02:52,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-01 01:02:52,519 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:52,519 INFO L87 Difference]: Start difference. First operand 104 states and 106 transitions. Second operand 36 states. [2018-10-01 01:02:52,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:52,814 INFO L93 Difference]: Finished difference Result 110 states and 116 transitions. [2018-10-01 01:02:52,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-01 01:02:52,815 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 101 [2018-10-01 01:02:52,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:52,816 INFO L225 Difference]: With dead ends: 110 [2018-10-01 01:02:52,816 INFO L226 Difference]: Without dead ends: 106 [2018-10-01 01:02:52,817 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:02:52,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-10-01 01:02:52,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-10-01 01:02:52,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-10-01 01:02:52,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 108 transitions. [2018-10-01 01:02:52,821 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 108 transitions. Word has length 101 [2018-10-01 01:02:52,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:52,821 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 108 transitions. [2018-10-01 01:02:52,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-01 01:02:52,822 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 108 transitions. [2018-10-01 01:02:52,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-01 01:02:52,822 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:52,822 INFO L375 BasicCegarLoop]: trace histogram [34, 34, 33, 1, 1, 1] [2018-10-01 01:02:52,823 INFO L423 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:52,823 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:52,823 INFO L82 PathProgramCache]: Analyzing trace with hash 875431701, now seen corresponding path program 33 times [2018-10-01 01:02:52,823 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:52,823 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:52,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:52,824 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:02:52,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:52,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:53,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1717 backedges. 34 proven. 1683 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:53,198 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:53,198 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:53,205 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:02:53,265 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 35 check-sat command(s) [2018-10-01 01:02:53,265 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:02:53,267 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:53,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1717 backedges. 0 proven. 1717 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:53,650 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:53,650 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 70 [2018-10-01 01:02:53,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-01 01:02:53,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-01 01:02:53,651 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:53,651 INFO L87 Difference]: Start difference. First operand 106 states and 108 transitions. Second operand 71 states. [2018-10-01 01:02:55,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:55,310 INFO L93 Difference]: Finished difference Result 113 states and 120 transitions. [2018-10-01 01:02:55,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-01 01:02:55,311 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 104 [2018-10-01 01:02:55,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:55,312 INFO L225 Difference]: With dead ends: 113 [2018-10-01 01:02:55,313 INFO L226 Difference]: Without dead ends: 109 [2018-10-01 01:02:55,313 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 01:02:55,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-10-01 01:02:55,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-10-01 01:02:55,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-10-01 01:02:55,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 111 transitions. [2018-10-01 01:02:55,316 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 111 transitions. Word has length 104 [2018-10-01 01:02:55,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:55,317 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 111 transitions. [2018-10-01 01:02:55,317 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-01 01:02:55,317 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 111 transitions. [2018-10-01 01:02:55,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-10-01 01:02:55,317 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:55,318 INFO L375 BasicCegarLoop]: trace histogram [35, 35, 34, 1, 1, 1] [2018-10-01 01:02:55,318 INFO L423 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:55,318 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:55,318 INFO L82 PathProgramCache]: Analyzing trace with hash 945822217, now seen corresponding path program 34 times [2018-10-01 01:02:55,318 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:55,318 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:55,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:55,319 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:02:55,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:55,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:55,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1820 backedges. 35 proven. 1785 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:55,859 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:55,859 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:55,868 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:02:55,907 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:02:55,907 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:02:55,909 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:02:56,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1820 backedges. 35 proven. 1785 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:56,236 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:02:56,236 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-10-01 01:02:56,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-01 01:02:56,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-01 01:02:56,237 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:02:56,237 INFO L87 Difference]: Start difference. First operand 109 states and 111 transitions. Second operand 37 states. [2018-10-01 01:02:56,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:02:56,807 INFO L93 Difference]: Finished difference Result 114 states and 119 transitions. [2018-10-01 01:02:56,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-01 01:02:56,807 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 107 [2018-10-01 01:02:56,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:02:56,808 INFO L225 Difference]: With dead ends: 114 [2018-10-01 01:02:56,808 INFO L226 Difference]: Without dead ends: 110 [2018-10-01 01:02:56,809 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:02:56,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-10-01 01:02:56,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2018-10-01 01:02:56,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-10-01 01:02:56,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 112 transitions. [2018-10-01 01:02:56,812 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 112 transitions. Word has length 107 [2018-10-01 01:02:56,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:02:56,812 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 112 transitions. [2018-10-01 01:02:56,812 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-01 01:02:56,812 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 112 transitions. [2018-10-01 01:02:56,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-10-01 01:02:56,813 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:02:56,813 INFO L375 BasicCegarLoop]: trace histogram [35, 35, 35, 1, 1] [2018-10-01 01:02:56,813 INFO L423 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:02:56,814 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:02:56,814 INFO L82 PathProgramCache]: Analyzing trace with hash 945822279, now seen corresponding path program 22 times [2018-10-01 01:02:56,814 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:02:56,814 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:02:56,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:56,815 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:02:56,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:02:56,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:02:59,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1820 backedges. 0 proven. 1820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:02:59,903 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:02:59,903 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:02:59,910 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:02:59,954 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:02:59,954 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:02:59,956 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:00,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1820 backedges. 0 proven. 1820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:00,158 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:00,159 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-10-01 01:03:00,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-01 01:03:00,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-01 01:03:00,159 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:00,159 INFO L87 Difference]: Start difference. First operand 110 states and 112 transitions. Second operand 38 states. [2018-10-01 01:03:00,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:00,474 INFO L93 Difference]: Finished difference Result 116 states and 122 transitions. [2018-10-01 01:03:00,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-01 01:03:00,474 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 107 [2018-10-01 01:03:00,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:00,475 INFO L225 Difference]: With dead ends: 116 [2018-10-01 01:03:00,475 INFO L226 Difference]: Without dead ends: 112 [2018-10-01 01:03:00,475 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s Time [2018-10-01 01:03:00,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-10-01 01:03:00,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2018-10-01 01:03:00,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-10-01 01:03:00,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 114 transitions. [2018-10-01 01:03:00,478 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 114 transitions. Word has length 107 [2018-10-01 01:03:00,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:00,478 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 114 transitions. [2018-10-01 01:03:00,478 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-01 01:03:00,478 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 114 transitions. [2018-10-01 01:03:00,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-01 01:03:00,479 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:00,479 INFO L375 BasicCegarLoop]: trace histogram [36, 36, 35, 1, 1, 1] [2018-10-01 01:03:00,479 INFO L423 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:00,479 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:00,479 INFO L82 PathProgramCache]: Analyzing trace with hash 2005643925, now seen corresponding path program 35 times [2018-10-01 01:03:00,479 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:00,479 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:00,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:00,480 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:00,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:00,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:02,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1926 backedges. 36 proven. 1890 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:02,574 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:02,574 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:02,581 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:03:02,642 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2018-10-01 01:03:02,642 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:02,646 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:02,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1926 backedges. 36 proven. 1890 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:02,887 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:02,888 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-10-01 01:03:02,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-01 01:03:02,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-01 01:03:02,888 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:02,889 INFO L87 Difference]: Start difference. First operand 112 states and 114 transitions. Second operand 38 states. [2018-10-01 01:03:03,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:03,139 INFO L93 Difference]: Finished difference Result 117 states and 122 transitions. [2018-10-01 01:03:03,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-01 01:03:03,140 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 110 [2018-10-01 01:03:03,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:03,141 INFO L225 Difference]: With dead ends: 117 [2018-10-01 01:03:03,141 INFO L226 Difference]: Without dead ends: 113 [2018-10-01 01:03:03,141 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 01:03:03,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-10-01 01:03:03,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-10-01 01:03:03,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-10-01 01:03:03,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 115 transitions. [2018-10-01 01:03:03,145 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 115 transitions. Word has length 110 [2018-10-01 01:03:03,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:03,146 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 115 transitions. [2018-10-01 01:03:03,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-01 01:03:03,146 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 115 transitions. [2018-10-01 01:03:03,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-01 01:03:03,146 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:03,147 INFO L375 BasicCegarLoop]: trace histogram [36, 36, 36, 1, 1] [2018-10-01 01:03:03,147 INFO L423 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:03,147 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:03,147 INFO L82 PathProgramCache]: Analyzing trace with hash 2005643987, now seen corresponding path program 23 times [2018-10-01 01:03:03,147 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:03,147 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:03,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:03,148 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:03,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:03,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:04,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1926 backedges. 0 proven. 1926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:04,076 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:04,076 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:04,086 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:03:04,147 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2018-10-01 01:03:04,147 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:04,150 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:04,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1926 backedges. 0 proven. 1926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:04,352 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:04,352 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-10-01 01:03:04,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-01 01:03:04,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-01 01:03:04,353 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:04,353 INFO L87 Difference]: Start difference. First operand 113 states and 115 transitions. Second operand 39 states. [2018-10-01 01:03:04,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:04,508 INFO L93 Difference]: Finished difference Result 119 states and 125 transitions. [2018-10-01 01:03:04,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-01 01:03:04,509 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 110 [2018-10-01 01:03:04,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:04,509 INFO L225 Difference]: With dead ends: 119 [2018-10-01 01:03:04,510 INFO L226 Difference]: Without dead ends: 115 [2018-10-01 01:03:04,510 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:03:04,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-10-01 01:03:04,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-10-01 01:03:04,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-10-01 01:03:04,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 117 transitions. [2018-10-01 01:03:04,513 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 117 transitions. Word has length 110 [2018-10-01 01:03:04,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:04,513 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 117 transitions. [2018-10-01 01:03:04,513 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-01 01:03:04,513 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 117 transitions. [2018-10-01 01:03:04,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-10-01 01:03:04,514 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:04,514 INFO L375 BasicCegarLoop]: trace histogram [37, 37, 36, 1, 1, 1] [2018-10-01 01:03:04,514 INFO L423 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:04,514 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:04,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1445413239, now seen corresponding path program 36 times [2018-10-01 01:03:04,515 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:04,515 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:04,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:04,515 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:04,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:04,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:04,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2035 backedges. 37 proven. 1998 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:04,770 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:04,770 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:04,777 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:03:04,840 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 38 check-sat command(s) [2018-10-01 01:03:04,840 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:04,844 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:05,616 INFO L134 CoverageAnalysis]: Checked inductivity of 2035 backedges. 0 proven. 2035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:05,637 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:05,637 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 76 [2018-10-01 01:03:05,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-10-01 01:03:05,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-10-01 01:03:05,638 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:05,638 INFO L87 Difference]: Start difference. First operand 115 states and 117 transitions. Second operand 77 states. [2018-10-01 01:03:07,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:07,887 INFO L93 Difference]: Finished difference Result 122 states and 129 transitions. [2018-10-01 01:03:07,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-01 01:03:07,887 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 113 [2018-10-01 01:03:07,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:07,888 INFO L225 Difference]: With dead ends: 122 [2018-10-01 01:03:07,888 INFO L226 Difference]: Without dead ends: 118 [2018-10-01 01:03:07,889 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-10-01 01:03:07,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-10-01 01:03:07,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2018-10-01 01:03:07,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-10-01 01:03:07,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 120 transitions. [2018-10-01 01:03:07,892 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 120 transitions. Word has length 113 [2018-10-01 01:03:07,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:07,893 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 120 transitions. [2018-10-01 01:03:07,893 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-10-01 01:03:07,893 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 120 transitions. [2018-10-01 01:03:07,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-01 01:03:07,893 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:07,893 INFO L375 BasicCegarLoop]: trace histogram [38, 38, 37, 1, 1, 1] [2018-10-01 01:03:07,894 INFO L423 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:07,894 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:07,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1037745685, now seen corresponding path program 37 times [2018-10-01 01:03:07,894 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:07,894 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:07,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:07,895 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:07,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:07,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:08,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2147 backedges. 38 proven. 2109 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:08,115 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:08,115 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:08,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:03:08,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:08,174 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:09,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2147 backedges. 38 proven. 2109 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:09,612 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:09,612 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-10-01 01:03:09,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-01 01:03:09,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-01 01:03:09,612 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:09,612 INFO L87 Difference]: Start difference. First operand 118 states and 120 transitions. Second operand 40 states. [2018-10-01 01:03:09,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:09,945 INFO L93 Difference]: Finished difference Result 123 states and 128 transitions. [2018-10-01 01:03:09,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-01 01:03:09,945 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 116 [2018-10-01 01:03:09,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:09,946 INFO L225 Difference]: With dead ends: 123 [2018-10-01 01:03:09,947 INFO L226 Difference]: Without dead ends: 119 [2018-10-01 01:03:09,947 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 01:03:09,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-10-01 01:03:09,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-10-01 01:03:09,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-10-01 01:03:09,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 121 transitions. [2018-10-01 01:03:09,951 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 121 transitions. Word has length 116 [2018-10-01 01:03:09,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:09,951 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 121 transitions. [2018-10-01 01:03:09,951 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-01 01:03:09,951 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 121 transitions. [2018-10-01 01:03:09,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-01 01:03:09,951 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:09,952 INFO L375 BasicCegarLoop]: trace histogram [38, 38, 38, 1, 1] [2018-10-01 01:03:09,952 INFO L423 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:09,952 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:09,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1037745747, now seen corresponding path program 24 times [2018-10-01 01:03:09,952 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:09,952 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:09,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:09,953 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:03:09,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:09,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:10,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2147 backedges. 0 proven. 2147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:10,193 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:10,193 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:10,203 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:03:10,676 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 39 check-sat command(s) [2018-10-01 01:03:10,677 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:10,680 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:10,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2147 backedges. 0 proven. 2147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:10,994 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:10,994 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-10-01 01:03:10,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-01 01:03:10,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-01 01:03:10,995 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:10,995 INFO L87 Difference]: Start difference. First operand 119 states and 121 transitions. Second operand 41 states. [2018-10-01 01:03:11,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:11,259 INFO L93 Difference]: Finished difference Result 125 states and 131 transitions. [2018-10-01 01:03:11,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-01 01:03:11,259 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 116 [2018-10-01 01:03:11,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:11,260 INFO L225 Difference]: With dead ends: 125 [2018-10-01 01:03:11,261 INFO L226 Difference]: Without dead ends: 121 [2018-10-01 01:03:11,261 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:03:11,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-10-01 01:03:11,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-10-01 01:03:11,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-10-01 01:03:11,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 123 transitions. [2018-10-01 01:03:11,265 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 123 transitions. Word has length 116 [2018-10-01 01:03:11,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:11,265 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 123 transitions. [2018-10-01 01:03:11,266 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-01 01:03:11,266 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 123 transitions. [2018-10-01 01:03:11,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-10-01 01:03:11,266 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:11,266 INFO L375 BasicCegarLoop]: trace histogram [39, 39, 38, 1, 1, 1] [2018-10-01 01:03:11,266 INFO L423 AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:11,266 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:11,267 INFO L82 PathProgramCache]: Analyzing trace with hash 308544265, now seen corresponding path program 38 times [2018-10-01 01:03:11,267 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:11,267 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:11,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:11,267 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:11,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:11,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:11,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2262 backedges. 39 proven. 2223 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:11,507 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:11,507 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-10-01 01:03:11,521 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:11,578 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:03:11,579 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:11,581 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:11,984 INFO L134 CoverageAnalysis]: Checked inductivity of 2262 backedges. 39 proven. 2223 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:12,006 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:12,006 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-10-01 01:03:12,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-01 01:03:12,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-01 01:03:12,007 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:12,007 INFO L87 Difference]: Start difference. First operand 121 states and 123 transitions. Second operand 41 states. [2018-10-01 01:03:12,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:12,347 INFO L93 Difference]: Finished difference Result 126 states and 131 transitions. [2018-10-01 01:03:12,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-01 01:03:12,348 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 119 [2018-10-01 01:03:12,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:12,349 INFO L225 Difference]: With dead ends: 126 [2018-10-01 01:03:12,349 INFO L226 Difference]: Without dead ends: 122 [2018-10-01 01:03:12,349 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 01:03:12,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-10-01 01:03:12,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2018-10-01 01:03:12,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-10-01 01:03:12,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 124 transitions. [2018-10-01 01:03:12,353 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 124 transitions. Word has length 119 [2018-10-01 01:03:12,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:12,354 INFO L480 AbstractCegarLoop]: Abstraction has 122 states and 124 transitions. [2018-10-01 01:03:12,354 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-01 01:03:12,354 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 124 transitions. [2018-10-01 01:03:12,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-10-01 01:03:12,354 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:12,355 INFO L375 BasicCegarLoop]: trace histogram [39, 39, 39, 1, 1] [2018-10-01 01:03:12,355 INFO L423 AbstractCegarLoop]: === Iteration 65 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:12,355 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:12,355 INFO L82 PathProgramCache]: Analyzing trace with hash 308544327, now seen corresponding path program 25 times [2018-10-01 01:03:12,355 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:12,355 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:12,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:12,356 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:12,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:12,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:12,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2262 backedges. 0 proven. 2262 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:12,796 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:12,796 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:12,806 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:03:12,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:12,840 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:13,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2262 backedges. 0 proven. 2262 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:13,070 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:13,071 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-10-01 01:03:13,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-01 01:03:13,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-01 01:03:13,071 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:13,071 INFO L87 Difference]: Start difference. First operand 122 states and 124 transitions. Second operand 42 states. [2018-10-01 01:03:13,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:13,412 INFO L93 Difference]: Finished difference Result 128 states and 134 transitions. [2018-10-01 01:03:13,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-01 01:03:13,412 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 119 [2018-10-01 01:03:13,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:13,413 INFO L225 Difference]: With dead ends: 128 [2018-10-01 01:03:13,413 INFO L226 Difference]: Without dead ends: 124 [2018-10-01 01:03:13,414 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 01:03:13,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-10-01 01:03:13,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2018-10-01 01:03:13,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-10-01 01:03:13,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 126 transitions. [2018-10-01 01:03:13,417 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 126 transitions. Word has length 119 [2018-10-01 01:03:13,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:13,418 INFO L480 AbstractCegarLoop]: Abstraction has 124 states and 126 transitions. [2018-10-01 01:03:13,418 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-01 01:03:13,418 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 126 transitions. [2018-10-01 01:03:13,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-01 01:03:13,418 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:13,418 INFO L375 BasicCegarLoop]: trace histogram [40, 40, 39, 1, 1, 1] [2018-10-01 01:03:13,418 INFO L423 AbstractCegarLoop]: === Iteration 66 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:13,419 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:13,419 INFO L82 PathProgramCache]: Analyzing trace with hash 613624213, now seen corresponding path program 39 times [2018-10-01 01:03:13,419 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:13,419 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:13,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:13,419 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:03:13,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:13,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:13,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 40 proven. 2340 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:13,706 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:13,706 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:13,713 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:03:13,785 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 41 check-sat command(s) [2018-10-01 01:03:13,785 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:13,787 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:14,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 2380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:14,362 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:14,362 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 82 [2018-10-01 01:03:14,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-10-01 01:03:14,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-10-01 01:03:14,363 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:14,363 INFO L87 Difference]: Start difference. First operand 124 states and 126 transitions. Second operand 83 states. [2018-10-01 01:03:16,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:16,500 INFO L93 Difference]: Finished difference Result 131 states and 138 transitions. [2018-10-01 01:03:16,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-10-01 01:03:16,501 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 122 [2018-10-01 01:03:16,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:16,502 INFO L225 Difference]: With dead ends: 131 [2018-10-01 01:03:16,502 INFO L226 Difference]: Without dead ends: 127 [2018-10-01 01:03:16,502 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 01:03:16,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-10-01 01:03:16,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-10-01 01:03:16,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-10-01 01:03:16,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 129 transitions. [2018-10-01 01:03:16,506 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 129 transitions. Word has length 122 [2018-10-01 01:03:16,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:16,506 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 129 transitions. [2018-10-01 01:03:16,506 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-10-01 01:03:16,506 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 129 transitions. [2018-10-01 01:03:16,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-01 01:03:16,507 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:16,507 INFO L375 BasicCegarLoop]: trace histogram [41, 41, 40, 1, 1, 1] [2018-10-01 01:03:16,507 INFO L423 AbstractCegarLoop]: === Iteration 67 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:16,508 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:16,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1099556745, now seen corresponding path program 40 times [2018-10-01 01:03:16,508 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:16,508 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:16,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:16,509 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:16,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:16,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:16,715 INFO L134 CoverageAnalysis]: Checked inductivity of 2501 backedges. 41 proven. 2460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:16,716 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:16,716 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:16,722 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:03:16,758 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:03:16,758 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:16,760 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:17,166 INFO L134 CoverageAnalysis]: Checked inductivity of 2501 backedges. 41 proven. 2460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:17,186 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:17,186 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-10-01 01:03:17,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-01 01:03:17,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-01 01:03:17,187 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:17,187 INFO L87 Difference]: Start difference. First operand 127 states and 129 transitions. Second operand 43 states. [2018-10-01 01:03:17,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:17,523 INFO L93 Difference]: Finished difference Result 132 states and 137 transitions. [2018-10-01 01:03:17,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-01 01:03:17,523 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 125 [2018-10-01 01:03:17,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:17,524 INFO L225 Difference]: With dead ends: 132 [2018-10-01 01:03:17,524 INFO L226 Difference]: Without dead ends: 128 [2018-10-01 01:03:17,525 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 01:03:17,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-10-01 01:03:17,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2018-10-01 01:03:17,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-10-01 01:03:17,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 130 transitions. [2018-10-01 01:03:17,529 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 130 transitions. Word has length 125 [2018-10-01 01:03:17,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:17,529 INFO L480 AbstractCegarLoop]: Abstraction has 128 states and 130 transitions. [2018-10-01 01:03:17,529 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-01 01:03:17,529 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 130 transitions. [2018-10-01 01:03:17,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-01 01:03:17,530 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:17,530 INFO L375 BasicCegarLoop]: trace histogram [41, 41, 41, 1, 1] [2018-10-01 01:03:17,530 INFO L423 AbstractCegarLoop]: === Iteration 68 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:17,530 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:17,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1099556807, now seen corresponding path program 26 times [2018-10-01 01:03:17,531 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:17,531 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:17,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:17,532 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:17,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:17,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:17,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2501 backedges. 0 proven. 2501 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:17,789 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:17,789 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:17,797 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:03:17,833 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:03:17,833 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:17,835 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:18,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2501 backedges. 0 proven. 2501 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:18,255 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:18,255 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-10-01 01:03:18,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-01 01:03:18,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-01 01:03:18,256 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:18,256 INFO L87 Difference]: Start difference. First operand 128 states and 130 transitions. Second operand 44 states. [2018-10-01 01:03:18,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:18,425 INFO L93 Difference]: Finished difference Result 134 states and 140 transitions. [2018-10-01 01:03:18,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-01 01:03:18,425 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 125 [2018-10-01 01:03:18,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:18,426 INFO L225 Difference]: With dead ends: 134 [2018-10-01 01:03:18,426 INFO L226 Difference]: Without dead ends: 130 [2018-10-01 01:03:18,427 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 01:03:18,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-10-01 01:03:18,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2018-10-01 01:03:18,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-10-01 01:03:18,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 132 transitions. [2018-10-01 01:03:18,431 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 132 transitions. Word has length 125 [2018-10-01 01:03:18,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:18,431 INFO L480 AbstractCegarLoop]: Abstraction has 130 states and 132 transitions. [2018-10-01 01:03:18,431 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-01 01:03:18,431 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 132 transitions. [2018-10-01 01:03:18,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-01 01:03:18,431 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:18,431 INFO L375 BasicCegarLoop]: trace histogram [42, 42, 41, 1, 1, 1] [2018-10-01 01:03:18,432 INFO L423 AbstractCegarLoop]: === Iteration 69 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:18,432 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:18,432 INFO L82 PathProgramCache]: Analyzing trace with hash -819137259, now seen corresponding path program 41 times [2018-10-01 01:03:18,432 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:18,432 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:18,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:18,433 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:18,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:18,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:18,645 INFO L134 CoverageAnalysis]: Checked inductivity of 2625 backedges. 42 proven. 2583 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:18,645 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:18,645 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:18,652 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:03:18,731 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2018-10-01 01:03:18,732 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:18,734 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:19,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2625 backedges. 42 proven. 2583 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:19,678 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:19,678 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-10-01 01:03:19,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-01 01:03:19,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-01 01:03:19,679 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:19,679 INFO L87 Difference]: Start difference. First operand 130 states and 132 transitions. Second operand 44 states. [2018-10-01 01:03:20,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:20,101 INFO L93 Difference]: Finished difference Result 135 states and 140 transitions. [2018-10-01 01:03:20,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-01 01:03:20,102 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 128 [2018-10-01 01:03:20,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:20,103 INFO L225 Difference]: With dead ends: 135 [2018-10-01 01:03:20,103 INFO L226 Difference]: Without dead ends: 131 [2018-10-01 01:03:20,103 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:03:20,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-10-01 01:03:20,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-10-01 01:03:20,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-10-01 01:03:20,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 133 transitions. [2018-10-01 01:03:20,106 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 133 transitions. Word has length 128 [2018-10-01 01:03:20,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:20,106 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 133 transitions. [2018-10-01 01:03:20,106 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-01 01:03:20,106 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 133 transitions. [2018-10-01 01:03:20,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-01 01:03:20,107 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:20,107 INFO L375 BasicCegarLoop]: trace histogram [42, 42, 42, 1, 1] [2018-10-01 01:03:20,107 INFO L423 AbstractCegarLoop]: === Iteration 70 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:20,107 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:20,107 INFO L82 PathProgramCache]: Analyzing trace with hash -819137197, now seen corresponding path program 27 times [2018-10-01 01:03:20,107 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:20,107 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:20,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:20,108 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:20,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:20,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:20,331 INFO L134 CoverageAnalysis]: Checked inductivity of 2625 backedges. 0 proven. 2625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:20,331 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:20,331 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:20,339 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:03:20,414 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 43 check-sat command(s) [2018-10-01 01:03:20,414 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:20,418 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:20,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2625 backedges. 0 proven. 2625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:20,745 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:20,745 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-10-01 01:03:20,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-01 01:03:20,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-01 01:03:20,745 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:20,746 INFO L87 Difference]: Start difference. First operand 131 states and 133 transitions. Second operand 45 states. [2018-10-01 01:03:21,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:21,084 INFO L93 Difference]: Finished difference Result 137 states and 143 transitions. [2018-10-01 01:03:21,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-01 01:03:21,085 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 128 [2018-10-01 01:03:21,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:21,086 INFO L225 Difference]: With dead ends: 137 [2018-10-01 01:03:21,086 INFO L226 Difference]: Without dead ends: 133 [2018-10-01 01:03:21,086 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:03:21,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-10-01 01:03:21,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-10-01 01:03:21,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-10-01 01:03:21,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 135 transitions. [2018-10-01 01:03:21,091 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 135 transitions. Word has length 128 [2018-10-01 01:03:21,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:21,091 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 135 transitions. [2018-10-01 01:03:21,091 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-01 01:03:21,091 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 135 transitions. [2018-10-01 01:03:21,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-01 01:03:21,092 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:21,092 INFO L375 BasicCegarLoop]: trace histogram [43, 43, 42, 1, 1, 1] [2018-10-01 01:03:21,092 INFO L423 AbstractCegarLoop]: === Iteration 71 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:21,092 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:21,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1087532041, now seen corresponding path program 42 times [2018-10-01 01:03:21,093 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:21,093 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:21,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:21,093 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:21,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:21,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:21,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2752 backedges. 43 proven. 2709 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:21,333 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:21,333 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:21,339 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:03:21,418 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 44 check-sat command(s) [2018-10-01 01:03:21,418 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:21,422 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:22,100 INFO L134 CoverageAnalysis]: Checked inductivity of 2752 backedges. 0 proven. 2752 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:22,121 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:22,121 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 88 [2018-10-01 01:03:22,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-10-01 01:03:22,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-10-01 01:03:22,122 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:22,122 INFO L87 Difference]: Start difference. First operand 133 states and 135 transitions. Second operand 89 states. [2018-10-01 01:03:24,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:24,249 INFO L93 Difference]: Finished difference Result 140 states and 147 transitions. [2018-10-01 01:03:24,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-01 01:03:24,250 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 131 [2018-10-01 01:03:24,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:24,250 INFO L225 Difference]: With dead ends: 140 [2018-10-01 01:03:24,251 INFO L226 Difference]: Without dead ends: 136 [2018-10-01 01:03:24,251 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 01:03:24,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2018-10-01 01:03:24,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2018-10-01 01:03:24,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-10-01 01:03:24,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 138 transitions. [2018-10-01 01:03:24,253 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 138 transitions. Word has length 131 [2018-10-01 01:03:24,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:24,254 INFO L480 AbstractCegarLoop]: Abstraction has 136 states and 138 transitions. [2018-10-01 01:03:24,254 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-10-01 01:03:24,254 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 138 transitions. [2018-10-01 01:03:24,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-01 01:03:24,254 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:24,254 INFO L375 BasicCegarLoop]: trace histogram [44, 44, 43, 1, 1, 1] [2018-10-01 01:03:24,255 INFO L423 AbstractCegarLoop]: === Iteration 72 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:24,255 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:24,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1730158741, now seen corresponding path program 43 times [2018-10-01 01:03:24,255 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:24,255 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:24,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:24,255 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:24,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:24,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:24,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2882 backedges. 44 proven. 2838 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:24,481 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:24,481 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:24,488 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:03:24,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:24,526 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:24,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2882 backedges. 44 proven. 2838 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:24,757 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:24,758 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-10-01 01:03:24,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-01 01:03:24,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-01 01:03:24,758 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:24,758 INFO L87 Difference]: Start difference. First operand 136 states and 138 transitions. Second operand 46 states. [2018-10-01 01:03:25,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:25,118 INFO L93 Difference]: Finished difference Result 141 states and 146 transitions. [2018-10-01 01:03:25,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-01 01:03:25,119 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 134 [2018-10-01 01:03:25,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:25,120 INFO L225 Difference]: With dead ends: 141 [2018-10-01 01:03:25,120 INFO L226 Difference]: Without dead ends: 137 [2018-10-01 01:03:25,120 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 01:03:25,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-10-01 01:03:25,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-10-01 01:03:25,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-10-01 01:03:25,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 139 transitions. [2018-10-01 01:03:25,123 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 139 transitions. Word has length 134 [2018-10-01 01:03:25,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:25,123 INFO L480 AbstractCegarLoop]: Abstraction has 137 states and 139 transitions. [2018-10-01 01:03:25,123 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-01 01:03:25,124 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 139 transitions. [2018-10-01 01:03:25,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-01 01:03:25,124 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:25,124 INFO L375 BasicCegarLoop]: trace histogram [44, 44, 44, 1, 1] [2018-10-01 01:03:25,124 INFO L423 AbstractCegarLoop]: === Iteration 73 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:25,124 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:25,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1730158803, now seen corresponding path program 28 times [2018-10-01 01:03:25,125 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:25,125 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:25,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:25,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:03:25,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:25,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:25,351 INFO L134 CoverageAnalysis]: Checked inductivity of 2882 backedges. 0 proven. 2882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:25,352 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:25,352 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:25,358 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:03:25,397 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:03:25,398 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:25,400 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:25,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2882 backedges. 0 proven. 2882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:25,635 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:25,636 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-10-01 01:03:25,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-01 01:03:25,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-01 01:03:25,637 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:25,637 INFO L87 Difference]: Start difference. First operand 137 states and 139 transitions. Second operand 47 states. [2018-10-01 01:03:25,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:25,872 INFO L93 Difference]: Finished difference Result 143 states and 149 transitions. [2018-10-01 01:03:25,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-01 01:03:25,872 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 134 [2018-10-01 01:03:25,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:25,873 INFO L225 Difference]: With dead ends: 143 [2018-10-01 01:03:25,874 INFO L226 Difference]: Without dead ends: 139 [2018-10-01 01:03:25,874 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 01:03:25,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-10-01 01:03:25,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-10-01 01:03:25,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-10-01 01:03:25,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 141 transitions. [2018-10-01 01:03:25,878 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 141 transitions. Word has length 134 [2018-10-01 01:03:25,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:25,879 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 141 transitions. [2018-10-01 01:03:25,879 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-01 01:03:25,879 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 141 transitions. [2018-10-01 01:03:25,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-10-01 01:03:25,879 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:25,879 INFO L375 BasicCegarLoop]: trace histogram [45, 45, 44, 1, 1, 1] [2018-10-01 01:03:25,880 INFO L423 AbstractCegarLoop]: === Iteration 74 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:25,880 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:25,880 INFO L82 PathProgramCache]: Analyzing trace with hash -742027127, now seen corresponding path program 44 times [2018-10-01 01:03:25,880 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:25,880 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:25,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:25,880 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:25,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:25,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:26,120 INFO L134 CoverageAnalysis]: Checked inductivity of 3015 backedges. 45 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:26,120 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:26,120 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:26,127 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:03:26,167 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:03:26,167 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:26,170 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:26,472 INFO L134 CoverageAnalysis]: Checked inductivity of 3015 backedges. 45 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:26,492 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:26,492 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-10-01 01:03:26,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-01 01:03:26,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-01 01:03:26,493 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:26,493 INFO L87 Difference]: Start difference. First operand 139 states and 141 transitions. Second operand 47 states. [2018-10-01 01:03:26,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:26,878 INFO L93 Difference]: Finished difference Result 144 states and 149 transitions. [2018-10-01 01:03:26,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-01 01:03:26,879 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 137 [2018-10-01 01:03:26,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:26,880 INFO L225 Difference]: With dead ends: 144 [2018-10-01 01:03:26,880 INFO L226 Difference]: Without dead ends: 140 [2018-10-01 01:03:26,880 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:03:26,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-10-01 01:03:26,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2018-10-01 01:03:26,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-10-01 01:03:26,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 142 transitions. [2018-10-01 01:03:26,886 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 142 transitions. Word has length 137 [2018-10-01 01:03:26,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:26,887 INFO L480 AbstractCegarLoop]: Abstraction has 140 states and 142 transitions. [2018-10-01 01:03:26,887 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-01 01:03:26,887 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 142 transitions. [2018-10-01 01:03:26,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-10-01 01:03:26,887 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:26,888 INFO L375 BasicCegarLoop]: trace histogram [45, 45, 45, 1, 1] [2018-10-01 01:03:26,888 INFO L423 AbstractCegarLoop]: === Iteration 75 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:26,888 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:26,888 INFO L82 PathProgramCache]: Analyzing trace with hash -742027065, now seen corresponding path program 29 times [2018-10-01 01:03:26,888 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:26,888 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:26,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:26,889 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:26,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:26,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:27,304 INFO L134 CoverageAnalysis]: Checked inductivity of 3015 backedges. 0 proven. 3015 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:27,304 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:27,304 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:27,311 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:03:27,391 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2018-10-01 01:03:27,391 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:27,393 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:27,610 INFO L134 CoverageAnalysis]: Checked inductivity of 3015 backedges. 0 proven. 3015 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:27,631 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:27,632 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-10-01 01:03:27,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-01 01:03:27,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-01 01:03:27,632 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:27,632 INFO L87 Difference]: Start difference. First operand 140 states and 142 transitions. Second operand 48 states. [2018-10-01 01:03:27,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:27,979 INFO L93 Difference]: Finished difference Result 146 states and 152 transitions. [2018-10-01 01:03:27,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-01 01:03:27,980 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 137 [2018-10-01 01:03:27,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:27,980 INFO L225 Difference]: With dead ends: 146 [2018-10-01 01:03:27,980 INFO L226 Difference]: Without dead ends: 142 [2018-10-01 01:03:27,981 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 01:03:27,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2018-10-01 01:03:27,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2018-10-01 01:03:27,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-10-01 01:03:27,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 144 transitions. [2018-10-01 01:03:27,986 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 144 transitions. Word has length 137 [2018-10-01 01:03:27,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:27,986 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 144 transitions. [2018-10-01 01:03:27,986 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-01 01:03:27,986 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 144 transitions. [2018-10-01 01:03:27,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-01 01:03:27,987 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:27,987 INFO L375 BasicCegarLoop]: trace histogram [46, 46, 45, 1, 1, 1] [2018-10-01 01:03:27,987 INFO L423 AbstractCegarLoop]: === Iteration 76 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:27,987 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:27,988 INFO L82 PathProgramCache]: Analyzing trace with hash 467971093, now seen corresponding path program 45 times [2018-10-01 01:03:27,988 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:27,988 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:27,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:27,988 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:27,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:28,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:28,233 INFO L134 CoverageAnalysis]: Checked inductivity of 3151 backedges. 46 proven. 3105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:28,233 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:28,234 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:28,241 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:03:28,662 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2018-10-01 01:03:28,662 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:28,664 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:28,901 INFO L134 CoverageAnalysis]: Checked inductivity of 3151 backedges. 46 proven. 3105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:28,921 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:28,921 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-10-01 01:03:28,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-01 01:03:28,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-01 01:03:28,922 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:28,922 INFO L87 Difference]: Start difference. First operand 142 states and 144 transitions. Second operand 48 states. [2018-10-01 01:03:29,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:29,614 INFO L93 Difference]: Finished difference Result 147 states and 152 transitions. [2018-10-01 01:03:29,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-01 01:03:29,615 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 140 [2018-10-01 01:03:29,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:29,616 INFO L225 Difference]: With dead ends: 147 [2018-10-01 01:03:29,616 INFO L226 Difference]: Without dead ends: 143 [2018-10-01 01:03:29,616 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:03:29,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-10-01 01:03:29,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-10-01 01:03:29,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-10-01 01:03:29,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 145 transitions. [2018-10-01 01:03:29,620 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 145 transitions. Word has length 140 [2018-10-01 01:03:29,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:29,620 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 145 transitions. [2018-10-01 01:03:29,621 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-01 01:03:29,621 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 145 transitions. [2018-10-01 01:03:29,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-01 01:03:29,621 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:29,622 INFO L375 BasicCegarLoop]: trace histogram [46, 46, 46, 1, 1] [2018-10-01 01:03:29,622 INFO L423 AbstractCegarLoop]: === Iteration 77 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:29,622 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:29,622 INFO L82 PathProgramCache]: Analyzing trace with hash 467971155, now seen corresponding path program 30 times [2018-10-01 01:03:29,622 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:29,623 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:29,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:29,624 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:29,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:29,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:30,112 INFO L134 CoverageAnalysis]: Checked inductivity of 3151 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:30,112 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:30,112 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:30,120 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:03:30,196 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 47 check-sat command(s) [2018-10-01 01:03:30,196 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:30,199 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:30,476 INFO L134 CoverageAnalysis]: Checked inductivity of 3151 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:30,496 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:30,496 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-10-01 01:03:30,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-01 01:03:30,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-01 01:03:30,497 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:30,497 INFO L87 Difference]: Start difference. First operand 143 states and 145 transitions. Second operand 49 states. [2018-10-01 01:03:30,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:30,891 INFO L93 Difference]: Finished difference Result 149 states and 155 transitions. [2018-10-01 01:03:30,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-01 01:03:30,891 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 140 [2018-10-01 01:03:30,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:30,893 INFO L225 Difference]: With dead ends: 149 [2018-10-01 01:03:30,893 INFO L226 Difference]: Without dead ends: 145 [2018-10-01 01:03:30,893 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:03:30,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-10-01 01:03:30,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-10-01 01:03:30,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-10-01 01:03:30,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 147 transitions. [2018-10-01 01:03:30,896 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 147 transitions. Word has length 140 [2018-10-01 01:03:30,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:30,896 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 147 transitions. [2018-10-01 01:03:30,896 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-01 01:03:30,896 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 147 transitions. [2018-10-01 01:03:30,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-01 01:03:30,897 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:30,897 INFO L375 BasicCegarLoop]: trace histogram [47, 47, 46, 1, 1, 1] [2018-10-01 01:03:30,897 INFO L423 AbstractCegarLoop]: === Iteration 78 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:30,897 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:30,897 INFO L82 PathProgramCache]: Analyzing trace with hash -135572215, now seen corresponding path program 46 times [2018-10-01 01:03:30,897 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:30,898 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:30,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:30,898 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:30,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:30,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:31,179 INFO L134 CoverageAnalysis]: Checked inductivity of 3290 backedges. 47 proven. 3243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:31,179 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:31,179 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:31,200 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:03:31,244 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:03:31,244 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:31,246 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:31,867 INFO L134 CoverageAnalysis]: Checked inductivity of 3290 backedges. 0 proven. 3290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:31,887 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:31,888 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 96 [2018-10-01 01:03:31,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-10-01 01:03:31,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-10-01 01:03:31,889 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:31,889 INFO L87 Difference]: Start difference. First operand 145 states and 147 transitions. Second operand 97 states. [2018-10-01 01:03:34,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:34,492 INFO L93 Difference]: Finished difference Result 152 states and 159 transitions. [2018-10-01 01:03:34,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-10-01 01:03:34,493 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 143 [2018-10-01 01:03:34,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:34,494 INFO L225 Difference]: With dead ends: 152 [2018-10-01 01:03:34,495 INFO L226 Difference]: Without dead ends: 148 [2018-10-01 01:03:34,495 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 01:03:34,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-10-01 01:03:34,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2018-10-01 01:03:34,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-10-01 01:03:34,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 150 transitions. [2018-10-01 01:03:34,499 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 150 transitions. Word has length 143 [2018-10-01 01:03:34,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:34,500 INFO L480 AbstractCegarLoop]: Abstraction has 148 states and 150 transitions. [2018-10-01 01:03:34,500 INFO L481 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-10-01 01:03:34,500 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 150 transitions. [2018-10-01 01:03:34,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-01 01:03:34,501 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:34,501 INFO L375 BasicCegarLoop]: trace histogram [48, 48, 47, 1, 1, 1] [2018-10-01 01:03:34,501 INFO L423 AbstractCegarLoop]: === Iteration 79 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:34,501 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:34,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1561159787, now seen corresponding path program 47 times [2018-10-01 01:03:34,501 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:34,501 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:34,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:34,502 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:34,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:34,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:34,893 INFO L134 CoverageAnalysis]: Checked inductivity of 3432 backedges. 48 proven. 3384 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:34,893 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:34,893 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:34,900 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:03:34,989 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2018-10-01 01:03:34,990 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:34,993 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:35,270 INFO L134 CoverageAnalysis]: Checked inductivity of 3432 backedges. 48 proven. 3384 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:35,290 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:35,290 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-10-01 01:03:35,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-01 01:03:35,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-01 01:03:35,291 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:35,291 INFO L87 Difference]: Start difference. First operand 148 states and 150 transitions. Second operand 50 states. [2018-10-01 01:03:35,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:35,722 INFO L93 Difference]: Finished difference Result 153 states and 158 transitions. [2018-10-01 01:03:35,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-01 01:03:35,723 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 146 [2018-10-01 01:03:35,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:35,724 INFO L225 Difference]: With dead ends: 153 [2018-10-01 01:03:35,724 INFO L226 Difference]: Without dead ends: 149 [2018-10-01 01:03:35,724 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 01:03:35,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-10-01 01:03:35,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-10-01 01:03:35,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-10-01 01:03:35,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 151 transitions. [2018-10-01 01:03:35,728 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 151 transitions. Word has length 146 [2018-10-01 01:03:35,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:35,728 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 151 transitions. [2018-10-01 01:03:35,728 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-01 01:03:35,728 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 151 transitions. [2018-10-01 01:03:35,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-01 01:03:35,729 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:35,729 INFO L375 BasicCegarLoop]: trace histogram [48, 48, 48, 1, 1] [2018-10-01 01:03:35,729 INFO L423 AbstractCegarLoop]: === Iteration 80 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:35,729 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:35,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1561159725, now seen corresponding path program 31 times [2018-10-01 01:03:35,730 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:35,730 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:35,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:35,730 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:35,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:35,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:36,003 INFO L134 CoverageAnalysis]: Checked inductivity of 3432 backedges. 0 proven. 3432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:36,003 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:36,003 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:36,011 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:03:36,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:36,055 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:36,307 INFO L134 CoverageAnalysis]: Checked inductivity of 3432 backedges. 0 proven. 3432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:36,326 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:36,327 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-10-01 01:03:36,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-01 01:03:36,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-01 01:03:36,327 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:36,327 INFO L87 Difference]: Start difference. First operand 149 states and 151 transitions. Second operand 51 states. [2018-10-01 01:03:36,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:36,726 INFO L93 Difference]: Finished difference Result 155 states and 161 transitions. [2018-10-01 01:03:36,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-01 01:03:36,727 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 146 [2018-10-01 01:03:36,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:36,728 INFO L225 Difference]: With dead ends: 155 [2018-10-01 01:03:36,728 INFO L226 Difference]: Without dead ends: 151 [2018-10-01 01:03:36,729 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:03:36,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-10-01 01:03:36,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-10-01 01:03:36,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-10-01 01:03:36,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 153 transitions. [2018-10-01 01:03:36,732 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 153 transitions. Word has length 146 [2018-10-01 01:03:36,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:36,733 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 153 transitions. [2018-10-01 01:03:36,733 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-01 01:03:36,733 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 153 transitions. [2018-10-01 01:03:36,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-10-01 01:03:36,733 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:36,733 INFO L375 BasicCegarLoop]: trace histogram [49, 49, 48, 1, 1, 1] [2018-10-01 01:03:36,734 INFO L423 AbstractCegarLoop]: === Iteration 81 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:36,734 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:36,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1691072905, now seen corresponding path program 48 times [2018-10-01 01:03:36,734 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:36,734 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:36,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:36,735 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:03:36,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:36,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:36,981 INFO L134 CoverageAnalysis]: Checked inductivity of 3577 backedges. 49 proven. 3528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:36,981 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:36,982 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:36,988 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:03:37,078 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 50 check-sat command(s) [2018-10-01 01:03:37,079 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:37,081 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:37,830 INFO L134 CoverageAnalysis]: Checked inductivity of 3577 backedges. 0 proven. 3577 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:37,850 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:37,850 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 100 [2018-10-01 01:03:37,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-10-01 01:03:37,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-10-01 01:03:37,851 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:37,851 INFO L87 Difference]: Start difference. First operand 151 states and 153 transitions. Second operand 101 states. [2018-10-01 01:03:40,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:40,543 INFO L93 Difference]: Finished difference Result 158 states and 165 transitions. [2018-10-01 01:03:40,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-10-01 01:03:40,544 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 149 [2018-10-01 01:03:40,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:40,545 INFO L225 Difference]: With dead ends: 158 [2018-10-01 01:03:40,545 INFO L226 Difference]: Without dead ends: 154 [2018-10-01 01:03:40,545 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 01:03:40,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-10-01 01:03:40,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2018-10-01 01:03:40,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-10-01 01:03:40,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 156 transitions. [2018-10-01 01:03:40,550 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 156 transitions. Word has length 149 [2018-10-01 01:03:40,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:40,550 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 156 transitions. [2018-10-01 01:03:40,551 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-10-01 01:03:40,551 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 156 transitions. [2018-10-01 01:03:40,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-10-01 01:03:40,551 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:40,552 INFO L375 BasicCegarLoop]: trace histogram [50, 50, 49, 1, 1, 1] [2018-10-01 01:03:40,552 INFO L423 AbstractCegarLoop]: === Iteration 82 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:40,552 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:40,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1212030187, now seen corresponding path program 49 times [2018-10-01 01:03:40,552 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:40,552 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:40,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:40,553 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:40,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:40,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:40,845 INFO L134 CoverageAnalysis]: Checked inductivity of 3725 backedges. 50 proven. 3675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:40,846 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:40,846 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:40,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:03:40,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:40,902 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:41,171 INFO L134 CoverageAnalysis]: Checked inductivity of 3725 backedges. 50 proven. 3675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:41,191 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:41,191 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-10-01 01:03:41,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-01 01:03:41,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-01 01:03:41,192 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:41,192 INFO L87 Difference]: Start difference. First operand 154 states and 156 transitions. Second operand 52 states. [2018-10-01 01:03:41,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:41,630 INFO L93 Difference]: Finished difference Result 159 states and 164 transitions. [2018-10-01 01:03:41,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-01 01:03:41,630 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 152 [2018-10-01 01:03:41,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:41,631 INFO L225 Difference]: With dead ends: 159 [2018-10-01 01:03:41,631 INFO L226 Difference]: Without dead ends: 155 [2018-10-01 01:03:41,632 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:03:41,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-10-01 01:03:41,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-10-01 01:03:41,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-10-01 01:03:41,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 157 transitions. [2018-10-01 01:03:41,635 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 157 transitions. Word has length 152 [2018-10-01 01:03:41,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:41,636 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 157 transitions. [2018-10-01 01:03:41,636 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-01 01:03:41,636 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 157 transitions. [2018-10-01 01:03:41,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-10-01 01:03:41,636 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:41,637 INFO L375 BasicCegarLoop]: trace histogram [50, 50, 50, 1, 1] [2018-10-01 01:03:41,637 INFO L423 AbstractCegarLoop]: === Iteration 83 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:41,637 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:41,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1212030125, now seen corresponding path program 32 times [2018-10-01 01:03:41,637 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:41,637 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:41,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:41,638 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:03:41,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:41,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:41,982 INFO L134 CoverageAnalysis]: Checked inductivity of 3725 backedges. 0 proven. 3725 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:41,983 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:41,983 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:41,991 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:03:42,037 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:03:42,037 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:42,039 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:42,279 INFO L134 CoverageAnalysis]: Checked inductivity of 3725 backedges. 0 proven. 3725 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:42,298 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:42,299 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-10-01 01:03:42,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-01 01:03:42,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-01 01:03:42,299 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:42,300 INFO L87 Difference]: Start difference. First operand 155 states and 157 transitions. Second operand 53 states. [2018-10-01 01:03:42,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:42,999 INFO L93 Difference]: Finished difference Result 161 states and 167 transitions. [2018-10-01 01:03:42,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-01 01:03:42,999 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 152 [2018-10-01 01:03:43,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:43,000 INFO L225 Difference]: With dead ends: 161 [2018-10-01 01:03:43,000 INFO L226 Difference]: Without dead ends: 157 [2018-10-01 01:03:43,000 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 01:03:43,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-10-01 01:03:43,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-10-01 01:03:43,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-10-01 01:03:43,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 159 transitions. [2018-10-01 01:03:43,004 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 159 transitions. Word has length 152 [2018-10-01 01:03:43,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:43,005 INFO L480 AbstractCegarLoop]: Abstraction has 157 states and 159 transitions. [2018-10-01 01:03:43,005 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-01 01:03:43,005 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 159 transitions. [2018-10-01 01:03:43,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-10-01 01:03:43,006 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:43,006 INFO L375 BasicCegarLoop]: trace histogram [51, 51, 50, 1, 1, 1] [2018-10-01 01:03:43,006 INFO L423 AbstractCegarLoop]: === Iteration 84 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:43,006 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:43,006 INFO L82 PathProgramCache]: Analyzing trace with hash 200195593, now seen corresponding path program 50 times [2018-10-01 01:03:43,006 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:43,006 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:43,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:43,007 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:43,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:43,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:43,467 INFO L134 CoverageAnalysis]: Checked inductivity of 3876 backedges. 51 proven. 3825 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:43,468 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:43,468 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:43,477 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:03:43,521 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:03:43,521 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:43,524 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:43,774 INFO L134 CoverageAnalysis]: Checked inductivity of 3876 backedges. 51 proven. 3825 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:43,793 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:43,794 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-10-01 01:03:43,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-01 01:03:43,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-01 01:03:43,794 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:43,794 INFO L87 Difference]: Start difference. First operand 157 states and 159 transitions. Second operand 53 states. [2018-10-01 01:03:44,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:44,148 INFO L93 Difference]: Finished difference Result 162 states and 167 transitions. [2018-10-01 01:03:44,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-01 01:03:44,148 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 155 [2018-10-01 01:03:44,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:44,149 INFO L225 Difference]: With dead ends: 162 [2018-10-01 01:03:44,149 INFO L226 Difference]: Without dead ends: 158 [2018-10-01 01:03:44,149 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:03:44,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-10-01 01:03:44,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2018-10-01 01:03:44,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-10-01 01:03:44,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 160 transitions. [2018-10-01 01:03:44,153 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 160 transitions. Word has length 155 [2018-10-01 01:03:44,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:44,153 INFO L480 AbstractCegarLoop]: Abstraction has 158 states and 160 transitions. [2018-10-01 01:03:44,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-01 01:03:44,154 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 160 transitions. [2018-10-01 01:03:44,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-10-01 01:03:44,154 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:44,155 INFO L375 BasicCegarLoop]: trace histogram [51, 51, 51, 1, 1] [2018-10-01 01:03:44,155 INFO L423 AbstractCegarLoop]: === Iteration 85 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:44,155 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:44,155 INFO L82 PathProgramCache]: Analyzing trace with hash 200195655, now seen corresponding path program 33 times [2018-10-01 01:03:44,155 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:44,155 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:44,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:44,156 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:44,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:44,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:44,489 INFO L134 CoverageAnalysis]: Checked inductivity of 3876 backedges. 0 proven. 3876 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:44,489 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:44,489 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:44,497 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:03:44,623 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2018-10-01 01:03:44,624 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:44,627 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:45,038 INFO L134 CoverageAnalysis]: Checked inductivity of 3876 backedges. 0 proven. 3876 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:45,057 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:45,057 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-10-01 01:03:45,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-01 01:03:45,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-01 01:03:45,058 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:45,059 INFO L87 Difference]: Start difference. First operand 158 states and 160 transitions. Second operand 54 states. [2018-10-01 01:03:45,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:45,373 INFO L93 Difference]: Finished difference Result 164 states and 170 transitions. [2018-10-01 01:03:45,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-01 01:03:45,374 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 155 [2018-10-01 01:03:45,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:45,375 INFO L225 Difference]: With dead ends: 164 [2018-10-01 01:03:45,375 INFO L226 Difference]: Without dead ends: 160 [2018-10-01 01:03:45,376 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:03:45,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-10-01 01:03:45,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2018-10-01 01:03:45,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2018-10-01 01:03:45,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 162 transitions. [2018-10-01 01:03:45,380 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 162 transitions. Word has length 155 [2018-10-01 01:03:45,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:45,380 INFO L480 AbstractCegarLoop]: Abstraction has 160 states and 162 transitions. [2018-10-01 01:03:45,380 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-01 01:03:45,381 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 162 transitions. [2018-10-01 01:03:45,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-01 01:03:45,381 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:45,381 INFO L375 BasicCegarLoop]: trace histogram [52, 52, 51, 1, 1, 1] [2018-10-01 01:03:45,382 INFO L423 AbstractCegarLoop]: === Iteration 86 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:45,382 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:45,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1681224043, now seen corresponding path program 51 times [2018-10-01 01:03:45,382 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:45,382 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:45,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:45,383 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:45,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:45,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:45,677 INFO L134 CoverageAnalysis]: Checked inductivity of 4030 backedges. 52 proven. 3978 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:45,677 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:45,677 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:45,688 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:03:45,789 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 53 check-sat command(s) [2018-10-01 01:03:45,789 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:45,793 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:46,365 INFO L134 CoverageAnalysis]: Checked inductivity of 4030 backedges. 0 proven. 4030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:46,386 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:46,386 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 106 [2018-10-01 01:03:46,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-10-01 01:03:46,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-10-01 01:03:46,387 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:46,388 INFO L87 Difference]: Start difference. First operand 160 states and 162 transitions. Second operand 107 states. [2018-10-01 01:03:49,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:49,293 INFO L93 Difference]: Finished difference Result 167 states and 174 transitions. [2018-10-01 01:03:49,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-10-01 01:03:49,293 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 158 [2018-10-01 01:03:49,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:49,294 INFO L225 Difference]: With dead ends: 167 [2018-10-01 01:03:49,294 INFO L226 Difference]: Without dead ends: 163 [2018-10-01 01:03:49,295 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 01:03:49,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-10-01 01:03:49,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-10-01 01:03:49,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-10-01 01:03:49,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 165 transitions. [2018-10-01 01:03:49,298 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 165 transitions. Word has length 158 [2018-10-01 01:03:49,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:49,299 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 165 transitions. [2018-10-01 01:03:49,299 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-10-01 01:03:49,299 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 165 transitions. [2018-10-01 01:03:49,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-10-01 01:03:49,300 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:49,300 INFO L375 BasicCegarLoop]: trace histogram [53, 53, 52, 1, 1, 1] [2018-10-01 01:03:49,300 INFO L423 AbstractCegarLoop]: === Iteration 87 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:49,300 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:49,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1730387319, now seen corresponding path program 52 times [2018-10-01 01:03:49,301 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:49,301 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:49,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:49,301 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:49,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:49,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:49,586 INFO L134 CoverageAnalysis]: Checked inductivity of 4187 backedges. 53 proven. 4134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:49,587 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:49,587 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:49,594 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:03:49,642 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:03:49,642 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:49,645 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:49,938 INFO L134 CoverageAnalysis]: Checked inductivity of 4187 backedges. 53 proven. 4134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:49,957 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:49,958 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-10-01 01:03:49,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-01 01:03:49,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-01 01:03:49,959 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:49,959 INFO L87 Difference]: Start difference. First operand 163 states and 165 transitions. Second operand 55 states. [2018-10-01 01:03:50,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:50,457 INFO L93 Difference]: Finished difference Result 168 states and 173 transitions. [2018-10-01 01:03:50,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-01 01:03:50,458 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 161 [2018-10-01 01:03:50,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:50,459 INFO L225 Difference]: With dead ends: 168 [2018-10-01 01:03:50,459 INFO L226 Difference]: Without dead ends: 164 [2018-10-01 01:03:50,459 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:03:50,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2018-10-01 01:03:50,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2018-10-01 01:03:50,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-10-01 01:03:50,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 166 transitions. [2018-10-01 01:03:50,463 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 166 transitions. Word has length 161 [2018-10-01 01:03:50,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:50,463 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 166 transitions. [2018-10-01 01:03:50,463 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-01 01:03:50,463 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 166 transitions. [2018-10-01 01:03:50,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-10-01 01:03:50,464 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:50,464 INFO L375 BasicCegarLoop]: trace histogram [53, 53, 53, 1, 1] [2018-10-01 01:03:50,464 INFO L423 AbstractCegarLoop]: === Iteration 88 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:50,464 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:50,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1730387257, now seen corresponding path program 34 times [2018-10-01 01:03:50,465 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:50,465 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:50,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:50,465 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:50,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:50,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:50,765 INFO L134 CoverageAnalysis]: Checked inductivity of 4187 backedges. 0 proven. 4187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:50,765 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:50,765 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:50,772 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:03:50,822 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:03:50,822 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:50,824 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:51,084 INFO L134 CoverageAnalysis]: Checked inductivity of 4187 backedges. 0 proven. 4187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:51,105 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:51,105 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-10-01 01:03:51,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-01 01:03:51,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-01 01:03:51,106 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:51,106 INFO L87 Difference]: Start difference. First operand 164 states and 166 transitions. Second operand 56 states. [2018-10-01 01:03:51,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:51,604 INFO L93 Difference]: Finished difference Result 170 states and 176 transitions. [2018-10-01 01:03:51,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-01 01:03:51,605 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 161 [2018-10-01 01:03:51,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:51,606 INFO L225 Difference]: With dead ends: 170 [2018-10-01 01:03:51,606 INFO L226 Difference]: Without dead ends: 166 [2018-10-01 01:03:51,606 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:03:51,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-10-01 01:03:51,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2018-10-01 01:03:51,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2018-10-01 01:03:51,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 168 transitions. [2018-10-01 01:03:51,611 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 168 transitions. Word has length 161 [2018-10-01 01:03:51,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:51,611 INFO L480 AbstractCegarLoop]: Abstraction has 166 states and 168 transitions. [2018-10-01 01:03:51,611 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-01 01:03:51,611 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 168 transitions. [2018-10-01 01:03:51,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-10-01 01:03:51,612 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:51,612 INFO L375 BasicCegarLoop]: trace histogram [54, 54, 53, 1, 1, 1] [2018-10-01 01:03:51,613 INFO L423 AbstractCegarLoop]: === Iteration 89 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:51,613 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:51,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1769694699, now seen corresponding path program 53 times [2018-10-01 01:03:51,613 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:51,613 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:51,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:51,614 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:51,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:51,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:51,907 INFO L134 CoverageAnalysis]: Checked inductivity of 4347 backedges. 54 proven. 4293 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:51,907 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:51,907 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:51,916 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:03:52,014 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 55 check-sat command(s) [2018-10-01 01:03:52,014 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:52,018 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:52,280 INFO L134 CoverageAnalysis]: Checked inductivity of 4347 backedges. 54 proven. 4293 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:52,300 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:52,301 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-10-01 01:03:52,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-01 01:03:52,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-01 01:03:52,302 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:52,302 INFO L87 Difference]: Start difference. First operand 166 states and 168 transitions. Second operand 56 states. [2018-10-01 01:03:52,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:52,741 INFO L93 Difference]: Finished difference Result 171 states and 176 transitions. [2018-10-01 01:03:52,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-01 01:03:52,741 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 164 [2018-10-01 01:03:52,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:52,742 INFO L225 Difference]: With dead ends: 171 [2018-10-01 01:03:52,742 INFO L226 Difference]: Without dead ends: 167 [2018-10-01 01:03:52,743 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:03:52,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-10-01 01:03:52,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-10-01 01:03:52,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-10-01 01:03:52,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 169 transitions. [2018-10-01 01:03:52,746 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 169 transitions. Word has length 164 [2018-10-01 01:03:52,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:52,746 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 169 transitions. [2018-10-01 01:03:52,746 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-01 01:03:52,747 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 169 transitions. [2018-10-01 01:03:52,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-10-01 01:03:52,747 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:52,748 INFO L375 BasicCegarLoop]: trace histogram [54, 54, 54, 1, 1] [2018-10-01 01:03:52,748 INFO L423 AbstractCegarLoop]: === Iteration 90 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:52,748 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:52,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1769694637, now seen corresponding path program 35 times [2018-10-01 01:03:52,748 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:52,748 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:52,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:52,749 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:52,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:52,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:53,237 INFO L134 CoverageAnalysis]: Checked inductivity of 4347 backedges. 0 proven. 4347 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:53,237 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:53,237 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:53,244 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:03:53,343 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 55 check-sat command(s) [2018-10-01 01:03:53,343 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:53,345 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:53,634 INFO L134 CoverageAnalysis]: Checked inductivity of 4347 backedges. 0 proven. 4347 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:53,655 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:53,655 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-10-01 01:03:53,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-01 01:03:53,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-01 01:03:53,656 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:53,656 INFO L87 Difference]: Start difference. First operand 167 states and 169 transitions. Second operand 57 states. [2018-10-01 01:03:54,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:54,160 INFO L93 Difference]: Finished difference Result 173 states and 179 transitions. [2018-10-01 01:03:54,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-01 01:03:54,160 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 164 [2018-10-01 01:03:54,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:54,161 INFO L225 Difference]: With dead ends: 173 [2018-10-01 01:03:54,161 INFO L226 Difference]: Without dead ends: 169 [2018-10-01 01:03:54,161 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:03:54,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-10-01 01:03:54,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-10-01 01:03:54,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-10-01 01:03:54,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 171 transitions. [2018-10-01 01:03:54,164 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 171 transitions. Word has length 164 [2018-10-01 01:03:54,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:54,165 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 171 transitions. [2018-10-01 01:03:54,165 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-01 01:03:54,165 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 171 transitions. [2018-10-01 01:03:54,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-10-01 01:03:54,165 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:54,165 INFO L375 BasicCegarLoop]: trace histogram [55, 55, 54, 1, 1, 1] [2018-10-01 01:03:54,166 INFO L423 AbstractCegarLoop]: === Iteration 91 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:54,166 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:54,166 INFO L82 PathProgramCache]: Analyzing trace with hash -249780471, now seen corresponding path program 54 times [2018-10-01 01:03:54,166 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:54,166 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:54,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:54,167 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:54,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:54,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:54,471 INFO L134 CoverageAnalysis]: Checked inductivity of 4510 backedges. 55 proven. 4455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:54,472 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:54,472 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:54,480 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:03:54,593 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 56 check-sat command(s) [2018-10-01 01:03:54,594 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:54,598 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:55,225 INFO L134 CoverageAnalysis]: Checked inductivity of 4510 backedges. 0 proven. 4510 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:55,245 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:55,245 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 112 [2018-10-01 01:03:55,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-10-01 01:03:55,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-10-01 01:03:55,246 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:55,246 INFO L87 Difference]: Start difference. First operand 169 states and 171 transitions. Second operand 113 states. [2018-10-01 01:03:58,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:58,464 INFO L93 Difference]: Finished difference Result 176 states and 183 transitions. [2018-10-01 01:03:58,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-10-01 01:03:58,465 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 167 [2018-10-01 01:03:58,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:58,465 INFO L225 Difference]: With dead ends: 176 [2018-10-01 01:03:58,465 INFO L226 Difference]: Without dead ends: 172 [2018-10-01 01:03:58,466 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time [2018-10-01 01:03:58,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2018-10-01 01:03:58,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2018-10-01 01:03:58,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2018-10-01 01:03:58,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 174 transitions. [2018-10-01 01:03:58,469 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 174 transitions. Word has length 167 [2018-10-01 01:03:58,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:58,469 INFO L480 AbstractCegarLoop]: Abstraction has 172 states and 174 transitions. [2018-10-01 01:03:58,469 INFO L481 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-10-01 01:03:58,469 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 174 transitions. [2018-10-01 01:03:58,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-01 01:03:58,470 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:58,470 INFO L375 BasicCegarLoop]: trace histogram [56, 56, 55, 1, 1, 1] [2018-10-01 01:03:58,471 INFO L423 AbstractCegarLoop]: === Iteration 92 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:58,471 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:58,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1969751445, now seen corresponding path program 55 times [2018-10-01 01:03:58,471 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:58,471 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:58,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:58,472 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:58,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:58,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:58,808 INFO L134 CoverageAnalysis]: Checked inductivity of 4676 backedges. 56 proven. 4620 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:58,808 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:58,808 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:58,816 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:03:58,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:58,869 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:59,409 INFO L134 CoverageAnalysis]: Checked inductivity of 4676 backedges. 56 proven. 4620 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:59,429 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:59,429 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-10-01 01:03:59,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-01 01:03:59,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-01 01:03:59,430 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:59,430 INFO L87 Difference]: Start difference. First operand 172 states and 174 transitions. Second operand 58 states. [2018-10-01 01:03:59,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:59,766 INFO L93 Difference]: Finished difference Result 177 states and 182 transitions. [2018-10-01 01:03:59,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-01 01:03:59,766 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 170 [2018-10-01 01:03:59,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:59,768 INFO L225 Difference]: With dead ends: 177 [2018-10-01 01:03:59,768 INFO L226 Difference]: Without dead ends: 173 [2018-10-01 01:03:59,768 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:03:59,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-10-01 01:03:59,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-10-01 01:03:59,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-10-01 01:03:59,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 175 transitions. [2018-10-01 01:03:59,772 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 175 transitions. Word has length 170 [2018-10-01 01:03:59,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:59,772 INFO L480 AbstractCegarLoop]: Abstraction has 173 states and 175 transitions. [2018-10-01 01:03:59,772 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-01 01:03:59,772 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 175 transitions. [2018-10-01 01:03:59,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-01 01:03:59,772 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:59,773 INFO L375 BasicCegarLoop]: trace histogram [56, 56, 56, 1, 1] [2018-10-01 01:03:59,773 INFO L423 AbstractCegarLoop]: === Iteration 93 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:59,773 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:59,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1969751507, now seen corresponding path program 36 times [2018-10-01 01:03:59,773 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:59,773 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:59,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:59,774 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:03:59,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:59,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:00,079 INFO L134 CoverageAnalysis]: Checked inductivity of 4676 backedges. 0 proven. 4676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:00,079 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:00,079 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:00,087 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:04:00,192 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 57 check-sat command(s) [2018-10-01 01:04:00,193 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:00,196 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:00,469 INFO L134 CoverageAnalysis]: Checked inductivity of 4676 backedges. 0 proven. 4676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:00,489 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:00,489 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-10-01 01:04:00,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-01 01:04:00,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-01 01:04:00,490 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:00,490 INFO L87 Difference]: Start difference. First operand 173 states and 175 transitions. Second operand 59 states. [2018-10-01 01:04:00,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:00,742 INFO L93 Difference]: Finished difference Result 179 states and 185 transitions. [2018-10-01 01:04:00,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-01 01:04:00,743 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 170 [2018-10-01 01:04:00,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:00,744 INFO L225 Difference]: With dead ends: 179 [2018-10-01 01:04:00,744 INFO L226 Difference]: Without dead ends: 175 [2018-10-01 01:04:00,744 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:04:00,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-10-01 01:04:00,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-10-01 01:04:00,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-10-01 01:04:00,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 177 transitions. [2018-10-01 01:04:00,748 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 177 transitions. Word has length 170 [2018-10-01 01:04:00,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:00,748 INFO L480 AbstractCegarLoop]: Abstraction has 175 states and 177 transitions. [2018-10-01 01:04:00,748 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-01 01:04:00,749 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 177 transitions. [2018-10-01 01:04:00,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-10-01 01:04:00,749 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:00,749 INFO L375 BasicCegarLoop]: trace histogram [57, 57, 56, 1, 1, 1] [2018-10-01 01:04:00,749 INFO L423 AbstractCegarLoop]: === Iteration 94 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:00,749 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:00,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1271428215, now seen corresponding path program 56 times [2018-10-01 01:04:00,750 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:00,750 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:00,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:00,750 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:00,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:00,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:01,058 INFO L134 CoverageAnalysis]: Checked inductivity of 4845 backedges. 57 proven. 4788 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:01,058 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:01,058 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:01,066 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:04:01,115 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:04:01,116 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:01,118 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:01,399 INFO L134 CoverageAnalysis]: Checked inductivity of 4845 backedges. 57 proven. 4788 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:01,419 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:01,420 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-10-01 01:04:01,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-01 01:04:01,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-01 01:04:01,420 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:01,420 INFO L87 Difference]: Start difference. First operand 175 states and 177 transitions. Second operand 59 states. [2018-10-01 01:04:01,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:01,950 INFO L93 Difference]: Finished difference Result 180 states and 185 transitions. [2018-10-01 01:04:01,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-01 01:04:01,950 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 173 [2018-10-01 01:04:01,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:01,951 INFO L225 Difference]: With dead ends: 180 [2018-10-01 01:04:01,951 INFO L226 Difference]: Without dead ends: 176 [2018-10-01 01:04:01,952 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:04:01,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2018-10-01 01:04:01,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2018-10-01 01:04:01,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-10-01 01:04:01,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 178 transitions. [2018-10-01 01:04:01,956 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 178 transitions. Word has length 173 [2018-10-01 01:04:01,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:01,956 INFO L480 AbstractCegarLoop]: Abstraction has 176 states and 178 transitions. [2018-10-01 01:04:01,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-01 01:04:01,956 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 178 transitions. [2018-10-01 01:04:01,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-10-01 01:04:01,957 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:01,957 INFO L375 BasicCegarLoop]: trace histogram [57, 57, 57, 1, 1] [2018-10-01 01:04:01,958 INFO L423 AbstractCegarLoop]: === Iteration 95 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:01,958 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:01,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1271428153, now seen corresponding path program 37 times [2018-10-01 01:04:01,958 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:01,958 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:01,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:01,959 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:01,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:01,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:02,294 INFO L134 CoverageAnalysis]: Checked inductivity of 4845 backedges. 0 proven. 4845 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:02,295 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:02,295 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:02,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:04:02,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:02,355 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:02,658 INFO L134 CoverageAnalysis]: Checked inductivity of 4845 backedges. 0 proven. 4845 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:02,678 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:02,679 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-10-01 01:04:02,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-01 01:04:02,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-01 01:04:02,679 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:02,679 INFO L87 Difference]: Start difference. First operand 176 states and 178 transitions. Second operand 60 states. [2018-10-01 01:04:03,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:03,440 INFO L93 Difference]: Finished difference Result 182 states and 188 transitions. [2018-10-01 01:04:03,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-01 01:04:03,441 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 173 [2018-10-01 01:04:03,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:03,442 INFO L225 Difference]: With dead ends: 182 [2018-10-01 01:04:03,442 INFO L226 Difference]: Without dead ends: 178 [2018-10-01 01:04:03,442 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 01:04:03,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-10-01 01:04:03,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2018-10-01 01:04:03,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-10-01 01:04:03,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 180 transitions. [2018-10-01 01:04:03,447 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 180 transitions. Word has length 173 [2018-10-01 01:04:03,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:03,447 INFO L480 AbstractCegarLoop]: Abstraction has 178 states and 180 transitions. [2018-10-01 01:04:03,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-01 01:04:03,447 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 180 transitions. [2018-10-01 01:04:03,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-10-01 01:04:03,448 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:03,448 INFO L375 BasicCegarLoop]: trace histogram [58, 58, 57, 1, 1, 1] [2018-10-01 01:04:03,448 INFO L423 AbstractCegarLoop]: === Iteration 96 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:03,449 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:03,449 INFO L82 PathProgramCache]: Analyzing trace with hash 200069397, now seen corresponding path program 57 times [2018-10-01 01:04:03,449 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:03,449 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:03,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:03,450 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:04:03,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:03,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:03,774 INFO L134 CoverageAnalysis]: Checked inductivity of 5017 backedges. 58 proven. 4959 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:03,774 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:03,774 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:03,782 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:04:03,893 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 59 check-sat command(s) [2018-10-01 01:04:03,894 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:03,898 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:04,530 INFO L134 CoverageAnalysis]: Checked inductivity of 5017 backedges. 0 proven. 5017 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:04,550 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:04,550 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 118 [2018-10-01 01:04:04,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-10-01 01:04:04,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-10-01 01:04:04,552 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:04,552 INFO L87 Difference]: Start difference. First operand 178 states and 180 transitions. Second operand 119 states. [2018-10-01 01:04:07,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:07,799 INFO L93 Difference]: Finished difference Result 185 states and 192 transitions. [2018-10-01 01:04:07,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-10-01 01:04:07,799 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 176 [2018-10-01 01:04:07,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:07,800 INFO L225 Difference]: With dead ends: 185 [2018-10-01 01:04:07,800 INFO L226 Difference]: Without dead ends: 181 [2018-10-01 01:04:07,800 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time [2018-10-01 01:04:07,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-10-01 01:04:07,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-10-01 01:04:07,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-10-01 01:04:07,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 183 transitions. [2018-10-01 01:04:07,803 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 183 transitions. Word has length 176 [2018-10-01 01:04:07,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:07,804 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 183 transitions. [2018-10-01 01:04:07,804 INFO L481 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-10-01 01:04:07,804 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 183 transitions. [2018-10-01 01:04:07,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-10-01 01:04:07,804 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:07,804 INFO L375 BasicCegarLoop]: trace histogram [59, 59, 58, 1, 1, 1] [2018-10-01 01:04:07,805 INFO L423 AbstractCegarLoop]: === Iteration 97 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:07,805 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:07,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1145761783, now seen corresponding path program 58 times [2018-10-01 01:04:07,805 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:07,805 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:07,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:07,805 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:07,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:07,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:08,353 INFO L134 CoverageAnalysis]: Checked inductivity of 5192 backedges. 59 proven. 5133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:08,353 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:08,354 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:08,363 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:04:08,415 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:04:08,416 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:08,418 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:08,701 INFO L134 CoverageAnalysis]: Checked inductivity of 5192 backedges. 59 proven. 5133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:08,721 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:08,721 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-10-01 01:04:08,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-10-01 01:04:08,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-10-01 01:04:08,722 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:08,722 INFO L87 Difference]: Start difference. First operand 181 states and 183 transitions. Second operand 61 states. [2018-10-01 01:04:09,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:09,131 INFO L93 Difference]: Finished difference Result 186 states and 191 transitions. [2018-10-01 01:04:09,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-01 01:04:09,131 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 179 [2018-10-01 01:04:09,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:09,132 INFO L225 Difference]: With dead ends: 186 [2018-10-01 01:04:09,133 INFO L226 Difference]: Without dead ends: 182 [2018-10-01 01:04:09,133 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:04:09,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-10-01 01:04:09,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2018-10-01 01:04:09,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-10-01 01:04:09,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 184 transitions. [2018-10-01 01:04:09,136 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 184 transitions. Word has length 179 [2018-10-01 01:04:09,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:09,136 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 184 transitions. [2018-10-01 01:04:09,136 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-10-01 01:04:09,136 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 184 transitions. [2018-10-01 01:04:09,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-10-01 01:04:09,137 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:09,137 INFO L375 BasicCegarLoop]: trace histogram [59, 59, 59, 1, 1] [2018-10-01 01:04:09,137 INFO L423 AbstractCegarLoop]: === Iteration 98 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:09,137 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:09,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1145761721, now seen corresponding path program 38 times [2018-10-01 01:04:09,137 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:09,137 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:09,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:09,138 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:09,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:09,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:09,568 INFO L134 CoverageAnalysis]: Checked inductivity of 5192 backedges. 0 proven. 5192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:09,568 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:09,568 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:09,577 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:04:09,629 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:04:09,629 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:09,632 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:09,916 INFO L134 CoverageAnalysis]: Checked inductivity of 5192 backedges. 0 proven. 5192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:09,936 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:09,936 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-10-01 01:04:09,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-01 01:04:09,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-01 01:04:09,937 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:09,937 INFO L87 Difference]: Start difference. First operand 182 states and 184 transitions. Second operand 62 states. [2018-10-01 01:04:10,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:10,344 INFO L93 Difference]: Finished difference Result 188 states and 194 transitions. [2018-10-01 01:04:10,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-01 01:04:10,345 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 179 [2018-10-01 01:04:10,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:10,346 INFO L225 Difference]: With dead ends: 188 [2018-10-01 01:04:10,346 INFO L226 Difference]: Without dead ends: 184 [2018-10-01 01:04:10,347 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 01:04:10,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-10-01 01:04:10,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2018-10-01 01:04:10,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-10-01 01:04:10,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 186 transitions. [2018-10-01 01:04:10,351 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 186 transitions. Word has length 179 [2018-10-01 01:04:10,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:10,351 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 186 transitions. [2018-10-01 01:04:10,351 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-01 01:04:10,351 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 186 transitions. [2018-10-01 01:04:10,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-10-01 01:04:10,352 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:10,352 INFO L375 BasicCegarLoop]: trace histogram [60, 60, 59, 1, 1, 1] [2018-10-01 01:04:10,352 INFO L423 AbstractCegarLoop]: === Iteration 99 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:10,352 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:10,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1282737003, now seen corresponding path program 59 times [2018-10-01 01:04:10,352 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:10,352 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:10,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:10,353 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:10,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:10,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:10,687 INFO L134 CoverageAnalysis]: Checked inductivity of 5370 backedges. 60 proven. 5310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:10,687 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:10,688 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:10,694 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:04:10,809 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 61 check-sat command(s) [2018-10-01 01:04:10,809 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:10,812 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:11,105 INFO L134 CoverageAnalysis]: Checked inductivity of 5370 backedges. 60 proven. 5310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:11,125 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:11,125 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-10-01 01:04:11,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-01 01:04:11,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-01 01:04:11,126 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:11,126 INFO L87 Difference]: Start difference. First operand 184 states and 186 transitions. Second operand 62 states. [2018-10-01 01:04:11,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:11,416 INFO L93 Difference]: Finished difference Result 189 states and 194 transitions. [2018-10-01 01:04:11,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-01 01:04:11,417 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 182 [2018-10-01 01:04:11,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:11,418 INFO L225 Difference]: With dead ends: 189 [2018-10-01 01:04:11,418 INFO L226 Difference]: Without dead ends: 185 [2018-10-01 01:04:11,419 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 01:04:11,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-10-01 01:04:11,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-10-01 01:04:11,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-10-01 01:04:11,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 187 transitions. [2018-10-01 01:04:11,423 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 187 transitions. Word has length 182 [2018-10-01 01:04:11,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:11,424 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 187 transitions. [2018-10-01 01:04:11,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-01 01:04:11,424 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 187 transitions. [2018-10-01 01:04:11,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-10-01 01:04:11,424 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:11,425 INFO L375 BasicCegarLoop]: trace histogram [60, 60, 60, 1, 1] [2018-10-01 01:04:11,425 INFO L423 AbstractCegarLoop]: === Iteration 100 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:11,425 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:11,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1282736941, now seen corresponding path program 39 times [2018-10-01 01:04:11,425 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:11,425 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:11,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:11,426 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:11,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:11,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:11,766 INFO L134 CoverageAnalysis]: Checked inductivity of 5370 backedges. 0 proven. 5370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:11,766 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:11,766 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:11,774 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:04:11,890 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 61 check-sat command(s) [2018-10-01 01:04:11,890 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:11,894 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:12,196 INFO L134 CoverageAnalysis]: Checked inductivity of 5370 backedges. 0 proven. 5370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:12,216 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:12,216 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-10-01 01:04:12,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-01 01:04:12,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-01 01:04:12,217 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:12,217 INFO L87 Difference]: Start difference. First operand 185 states and 187 transitions. Second operand 63 states. [2018-10-01 01:04:12,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:12,632 INFO L93 Difference]: Finished difference Result 191 states and 197 transitions. [2018-10-01 01:04:12,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-01 01:04:12,633 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 182 [2018-10-01 01:04:12,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:12,634 INFO L225 Difference]: With dead ends: 191 [2018-10-01 01:04:12,634 INFO L226 Difference]: Without dead ends: 187 [2018-10-01 01:04:12,635 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 01:04:12,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-10-01 01:04:12,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-10-01 01:04:12,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-10-01 01:04:12,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 189 transitions. [2018-10-01 01:04:12,638 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 189 transitions. Word has length 182 [2018-10-01 01:04:12,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:12,639 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 189 transitions. [2018-10-01 01:04:12,639 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-01 01:04:12,639 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 189 transitions. [2018-10-01 01:04:12,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-10-01 01:04:12,639 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:12,639 INFO L375 BasicCegarLoop]: trace histogram [61, 61, 60, 1, 1, 1] [2018-10-01 01:04:12,640 INFO L423 AbstractCegarLoop]: === Iteration 101 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:12,640 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:12,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1692584823, now seen corresponding path program 60 times [2018-10-01 01:04:12,640 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:12,640 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:12,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:12,641 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:12,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:12,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:13,072 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 61 proven. 5490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:13,073 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:13,073 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:13,082 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:04:13,210 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 62 check-sat command(s) [2018-10-01 01:04:13,210 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:13,213 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:13,987 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 0 proven. 5551 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:14,007 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:14,007 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 124 [2018-10-01 01:04:14,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-10-01 01:04:14,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-10-01 01:04:14,008 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:14,009 INFO L87 Difference]: Start difference. First operand 187 states and 189 transitions. Second operand 125 states. [2018-10-01 01:04:17,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:17,435 INFO L93 Difference]: Finished difference Result 194 states and 201 transitions. [2018-10-01 01:04:17,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-10-01 01:04:17,435 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 185 [2018-10-01 01:04:17,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:17,436 INFO L225 Difference]: With dead ends: 194 [2018-10-01 01:04:17,436 INFO L226 Difference]: Without dead ends: 190 [2018-10-01 01:04:17,436 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time [2018-10-01 01:04:17,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-10-01 01:04:17,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2018-10-01 01:04:17,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-10-01 01:04:17,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 192 transitions. [2018-10-01 01:04:17,441 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 192 transitions. Word has length 185 [2018-10-01 01:04:17,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:17,441 INFO L480 AbstractCegarLoop]: Abstraction has 190 states and 192 transitions. [2018-10-01 01:04:17,441 INFO L481 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-10-01 01:04:17,441 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 192 transitions. [2018-10-01 01:04:17,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-10-01 01:04:17,442 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:17,442 INFO L375 BasicCegarLoop]: trace histogram [62, 62, 61, 1, 1, 1] [2018-10-01 01:04:17,442 INFO L423 AbstractCegarLoop]: === Iteration 102 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:17,442 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:17,442 INFO L82 PathProgramCache]: Analyzing trace with hash -876967915, now seen corresponding path program 61 times [2018-10-01 01:04:17,442 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:17,442 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:17,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:17,443 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:17,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:17,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:17,837 INFO L134 CoverageAnalysis]: Checked inductivity of 5735 backedges. 62 proven. 5673 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:17,837 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:17,837 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:17,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:04:17,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:17,901 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:18,223 INFO L134 CoverageAnalysis]: Checked inductivity of 5735 backedges. 62 proven. 5673 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:18,243 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:18,243 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-10-01 01:04:18,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-01 01:04:18,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-01 01:04:18,245 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:18,245 INFO L87 Difference]: Start difference. First operand 190 states and 192 transitions. Second operand 64 states. [2018-10-01 01:04:18,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:18,767 INFO L93 Difference]: Finished difference Result 195 states and 200 transitions. [2018-10-01 01:04:18,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-01 01:04:18,768 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 188 [2018-10-01 01:04:18,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:18,769 INFO L225 Difference]: With dead ends: 195 [2018-10-01 01:04:18,769 INFO L226 Difference]: Without dead ends: 191 [2018-10-01 01:04:18,769 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:04:18,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-10-01 01:04:18,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-10-01 01:04:18,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-10-01 01:04:18,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 193 transitions. [2018-10-01 01:04:18,774 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 193 transitions. Word has length 188 [2018-10-01 01:04:18,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:18,774 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 193 transitions. [2018-10-01 01:04:18,775 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-01 01:04:18,775 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 193 transitions. [2018-10-01 01:04:18,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-10-01 01:04:18,775 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:18,776 INFO L375 BasicCegarLoop]: trace histogram [62, 62, 62, 1, 1] [2018-10-01 01:04:18,776 INFO L423 AbstractCegarLoop]: === Iteration 103 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:18,776 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:18,776 INFO L82 PathProgramCache]: Analyzing trace with hash -876967853, now seen corresponding path program 40 times [2018-10-01 01:04:18,776 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:18,777 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:18,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:18,777 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:04:18,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:18,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:19,155 INFO L134 CoverageAnalysis]: Checked inductivity of 5735 backedges. 0 proven. 5735 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:19,156 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:19,156 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:19,164 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:04:19,221 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:04:19,221 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:19,224 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:19,539 INFO L134 CoverageAnalysis]: Checked inductivity of 5735 backedges. 0 proven. 5735 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:19,559 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:19,559 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-10-01 01:04:19,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-01 01:04:19,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-01 01:04:19,560 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:19,560 INFO L87 Difference]: Start difference. First operand 191 states and 193 transitions. Second operand 65 states. [2018-10-01 01:04:19,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:19,878 INFO L93 Difference]: Finished difference Result 197 states and 203 transitions. [2018-10-01 01:04:19,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-01 01:04:19,878 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 188 [2018-10-01 01:04:19,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:19,880 INFO L225 Difference]: With dead ends: 197 [2018-10-01 01:04:19,880 INFO L226 Difference]: Without dead ends: 193 [2018-10-01 01:04:19,880 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 01:04:19,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-10-01 01:04:19,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-10-01 01:04:19,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-10-01 01:04:19,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 195 transitions. [2018-10-01 01:04:19,885 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 195 transitions. Word has length 188 [2018-10-01 01:04:19,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:19,886 INFO L480 AbstractCegarLoop]: Abstraction has 193 states and 195 transitions. [2018-10-01 01:04:19,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-01 01:04:19,886 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 195 transitions. [2018-10-01 01:04:19,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-10-01 01:04:19,886 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:19,887 INFO L375 BasicCegarLoop]: trace histogram [63, 63, 62, 1, 1, 1] [2018-10-01 01:04:19,887 INFO L423 AbstractCegarLoop]: === Iteration 104 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:19,887 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:19,887 INFO L82 PathProgramCache]: Analyzing trace with hash 536344841, now seen corresponding path program 62 times [2018-10-01 01:04:19,887 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:19,887 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:19,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:19,888 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:19,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:19,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:20,322 INFO L134 CoverageAnalysis]: Checked inductivity of 5922 backedges. 63 proven. 5859 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:20,323 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:20,323 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:20,330 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:04:20,384 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:04:20,384 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:20,387 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:20,697 INFO L134 CoverageAnalysis]: Checked inductivity of 5922 backedges. 63 proven. 5859 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:20,717 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:20,717 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-10-01 01:04:20,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-01 01:04:20,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-01 01:04:20,718 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:20,718 INFO L87 Difference]: Start difference. First operand 193 states and 195 transitions. Second operand 65 states. [2018-10-01 01:04:21,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:21,008 INFO L93 Difference]: Finished difference Result 198 states and 203 transitions. [2018-10-01 01:04:21,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-01 01:04:21,009 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 191 [2018-10-01 01:04:21,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:21,010 INFO L225 Difference]: With dead ends: 198 [2018-10-01 01:04:21,010 INFO L226 Difference]: Without dead ends: 194 [2018-10-01 01:04:21,010 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:04:21,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-10-01 01:04:21,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2018-10-01 01:04:21,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-10-01 01:04:21,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 196 transitions. [2018-10-01 01:04:21,015 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 196 transitions. Word has length 191 [2018-10-01 01:04:21,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:21,015 INFO L480 AbstractCegarLoop]: Abstraction has 194 states and 196 transitions. [2018-10-01 01:04:21,015 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-01 01:04:21,015 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 196 transitions. [2018-10-01 01:04:21,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-10-01 01:04:21,016 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:21,016 INFO L375 BasicCegarLoop]: trace histogram [63, 63, 63, 1, 1] [2018-10-01 01:04:21,016 INFO L423 AbstractCegarLoop]: === Iteration 105 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:21,016 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:21,016 INFO L82 PathProgramCache]: Analyzing trace with hash 536344903, now seen corresponding path program 41 times [2018-10-01 01:04:21,016 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:21,017 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:21,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:21,017 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:21,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:21,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:21,480 INFO L134 CoverageAnalysis]: Checked inductivity of 5922 backedges. 0 proven. 5922 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:21,480 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:21,480 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:21,487 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:04:21,602 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 64 check-sat command(s) [2018-10-01 01:04:21,603 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:21,606 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:21,912 INFO L134 CoverageAnalysis]: Checked inductivity of 5922 backedges. 0 proven. 5922 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:21,932 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:21,933 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-10-01 01:04:21,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-01 01:04:21,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-01 01:04:21,933 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:21,933 INFO L87 Difference]: Start difference. First operand 194 states and 196 transitions. Second operand 66 states. [2018-10-01 01:04:22,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:22,233 INFO L93 Difference]: Finished difference Result 200 states and 206 transitions. [2018-10-01 01:04:22,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-01 01:04:22,233 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 191 [2018-10-01 01:04:22,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:22,234 INFO L225 Difference]: With dead ends: 200 [2018-10-01 01:04:22,234 INFO L226 Difference]: Without dead ends: 196 [2018-10-01 01:04:22,235 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:04:22,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2018-10-01 01:04:22,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2018-10-01 01:04:22,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2018-10-01 01:04:22,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 198 transitions. [2018-10-01 01:04:22,240 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 198 transitions. Word has length 191 [2018-10-01 01:04:22,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:22,240 INFO L480 AbstractCegarLoop]: Abstraction has 196 states and 198 transitions. [2018-10-01 01:04:22,240 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-01 01:04:22,240 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 198 transitions. [2018-10-01 01:04:22,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-10-01 01:04:22,241 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:22,241 INFO L375 BasicCegarLoop]: trace histogram [64, 64, 63, 1, 1, 1] [2018-10-01 01:04:22,241 INFO L423 AbstractCegarLoop]: === Iteration 106 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:22,241 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:22,241 INFO L82 PathProgramCache]: Analyzing trace with hash 972256149, now seen corresponding path program 63 times [2018-10-01 01:04:22,241 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:22,241 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:22,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:22,242 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:22,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:22,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:22,657 INFO L134 CoverageAnalysis]: Checked inductivity of 6112 backedges. 64 proven. 6048 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:22,658 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:22,658 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:22,665 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:04:22,793 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 65 check-sat command(s) [2018-10-01 01:04:22,794 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:22,797 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:23,763 INFO L134 CoverageAnalysis]: Checked inductivity of 6112 backedges. 0 proven. 6112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:23,782 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:23,782 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 130 [2018-10-01 01:04:23,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 131 states [2018-10-01 01:04:23,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2018-10-01 01:04:23,784 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:23,784 INFO L87 Difference]: Start difference. First operand 196 states and 198 transitions. Second operand 131 states. [2018-10-01 01:04:27,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:27,284 INFO L93 Difference]: Finished difference Result 203 states and 210 transitions. [2018-10-01 01:04:27,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-10-01 01:04:27,285 INFO L78 Accepts]: Start accepts. Automaton has 131 states. Word has length 194 [2018-10-01 01:04:27,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:27,285 INFO L225 Difference]: With dead ends: 203 [2018-10-01 01:04:27,285 INFO L226 Difference]: Without dead ends: 199 [2018-10-01 01:04:27,286 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4s Time [2018-10-01 01:04:27,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-10-01 01:04:27,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-10-01 01:04:27,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-10-01 01:04:27,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 201 transitions. [2018-10-01 01:04:27,290 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 201 transitions. Word has length 194 [2018-10-01 01:04:27,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:27,290 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 201 transitions. [2018-10-01 01:04:27,290 INFO L481 AbstractCegarLoop]: Interpolant automaton has 131 states. [2018-10-01 01:04:27,290 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 201 transitions. [2018-10-01 01:04:27,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-10-01 01:04:27,291 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:27,291 INFO L375 BasicCegarLoop]: trace histogram [65, 65, 64, 1, 1, 1] [2018-10-01 01:04:27,291 INFO L423 AbstractCegarLoop]: === Iteration 107 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:27,291 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:27,291 INFO L82 PathProgramCache]: Analyzing trace with hash -775070327, now seen corresponding path program 64 times [2018-10-01 01:04:27,292 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:27,292 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:27,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:27,292 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:27,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:27,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:27,784 INFO L134 CoverageAnalysis]: Checked inductivity of 6305 backedges. 65 proven. 6240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:27,784 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:27,784 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:27,793 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:04:27,851 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:04:27,851 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:27,853 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:28,184 INFO L134 CoverageAnalysis]: Checked inductivity of 6305 backedges. 65 proven. 6240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:28,204 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:28,204 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-10-01 01:04:28,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-01 01:04:28,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-01 01:04:28,205 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:28,205 INFO L87 Difference]: Start difference. First operand 199 states and 201 transitions. Second operand 67 states. [2018-10-01 01:04:28,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:28,867 INFO L93 Difference]: Finished difference Result 204 states and 209 transitions. [2018-10-01 01:04:28,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-01 01:04:28,867 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 197 [2018-10-01 01:04:28,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:28,868 INFO L225 Difference]: With dead ends: 204 [2018-10-01 01:04:28,868 INFO L226 Difference]: Without dead ends: 200 [2018-10-01 01:04:28,868 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:04:28,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2018-10-01 01:04:28,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2018-10-01 01:04:28,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2018-10-01 01:04:28,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 202 transitions. [2018-10-01 01:04:28,872 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 202 transitions. Word has length 197 [2018-10-01 01:04:28,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:28,872 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 202 transitions. [2018-10-01 01:04:28,873 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-01 01:04:28,873 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 202 transitions. [2018-10-01 01:04:28,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-10-01 01:04:28,873 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:28,874 INFO L375 BasicCegarLoop]: trace histogram [65, 65, 65, 1, 1] [2018-10-01 01:04:28,874 INFO L423 AbstractCegarLoop]: === Iteration 108 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:28,874 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:28,874 INFO L82 PathProgramCache]: Analyzing trace with hash -775070265, now seen corresponding path program 42 times [2018-10-01 01:04:28,874 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:28,874 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:28,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:28,875 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:28,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:28,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:29,234 INFO L134 CoverageAnalysis]: Checked inductivity of 6305 backedges. 0 proven. 6305 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:29,234 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:29,234 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:29,242 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:04:29,368 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 66 check-sat command(s) [2018-10-01 01:04:29,368 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:29,371 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:29,695 INFO L134 CoverageAnalysis]: Checked inductivity of 6305 backedges. 0 proven. 6305 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:29,717 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:29,717 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-10-01 01:04:29,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-01 01:04:29,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-01 01:04:29,718 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:29,718 INFO L87 Difference]: Start difference. First operand 200 states and 202 transitions. Second operand 68 states. [2018-10-01 01:04:30,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:30,082 INFO L93 Difference]: Finished difference Result 206 states and 212 transitions. [2018-10-01 01:04:30,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-01 01:04:30,083 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 197 [2018-10-01 01:04:30,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:30,084 INFO L225 Difference]: With dead ends: 206 [2018-10-01 01:04:30,084 INFO L226 Difference]: Without dead ends: 202 [2018-10-01 01:04:30,084 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 01:04:30,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2018-10-01 01:04:30,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2018-10-01 01:04:30,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2018-10-01 01:04:30,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 204 transitions. [2018-10-01 01:04:30,088 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 204 transitions. Word has length 197 [2018-10-01 01:04:30,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:30,088 INFO L480 AbstractCegarLoop]: Abstraction has 202 states and 204 transitions. [2018-10-01 01:04:30,089 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-01 01:04:30,089 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 204 transitions. [2018-10-01 01:04:30,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-10-01 01:04:30,089 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:30,089 INFO L375 BasicCegarLoop]: trace histogram [66, 66, 65, 1, 1, 1] [2018-10-01 01:04:30,089 INFO L423 AbstractCegarLoop]: === Iteration 109 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:30,090 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:30,090 INFO L82 PathProgramCache]: Analyzing trace with hash -374489323, now seen corresponding path program 65 times [2018-10-01 01:04:30,090 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:30,090 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:30,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:30,090 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:30,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:30,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:30,480 INFO L134 CoverageAnalysis]: Checked inductivity of 6501 backedges. 66 proven. 6435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:30,480 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:30,480 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:30,487 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:04:30,612 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 67 check-sat command(s) [2018-10-01 01:04:30,613 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:30,617 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:31,010 INFO L134 CoverageAnalysis]: Checked inductivity of 6501 backedges. 66 proven. 6435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:31,031 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:31,032 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-10-01 01:04:31,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-01 01:04:31,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-01 01:04:31,032 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:31,033 INFO L87 Difference]: Start difference. First operand 202 states and 204 transitions. Second operand 68 states. [2018-10-01 01:04:31,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:31,504 INFO L93 Difference]: Finished difference Result 207 states and 212 transitions. [2018-10-01 01:04:31,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-01 01:04:31,505 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 200 [2018-10-01 01:04:31,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:31,506 INFO L225 Difference]: With dead ends: 207 [2018-10-01 01:04:31,506 INFO L226 Difference]: Without dead ends: 203 [2018-10-01 01:04:31,506 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:04:31,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-10-01 01:04:31,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-10-01 01:04:31,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-10-01 01:04:31,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 205 transitions. [2018-10-01 01:04:31,510 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 205 transitions. Word has length 200 [2018-10-01 01:04:31,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:31,510 INFO L480 AbstractCegarLoop]: Abstraction has 203 states and 205 transitions. [2018-10-01 01:04:31,510 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-01 01:04:31,510 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 205 transitions. [2018-10-01 01:04:31,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-10-01 01:04:31,511 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:31,511 INFO L375 BasicCegarLoop]: trace histogram [66, 66, 66, 1, 1] [2018-10-01 01:04:31,511 INFO L423 AbstractCegarLoop]: === Iteration 110 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:31,511 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:31,512 INFO L82 PathProgramCache]: Analyzing trace with hash -374489261, now seen corresponding path program 43 times [2018-10-01 01:04:31,512 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:31,512 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:31,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:31,512 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:31,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:31,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:31,942 INFO L134 CoverageAnalysis]: Checked inductivity of 6501 backedges. 0 proven. 6501 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:31,942 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:31,942 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:31,950 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:04:32,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:32,009 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:32,339 INFO L134 CoverageAnalysis]: Checked inductivity of 6501 backedges. 0 proven. 6501 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:32,359 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:32,359 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-10-01 01:04:32,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-10-01 01:04:32,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-10-01 01:04:32,360 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:32,360 INFO L87 Difference]: Start difference. First operand 203 states and 205 transitions. Second operand 69 states. [2018-10-01 01:04:32,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:32,709 INFO L93 Difference]: Finished difference Result 209 states and 215 transitions. [2018-10-01 01:04:32,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-01 01:04:32,710 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 200 [2018-10-01 01:04:32,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:32,711 INFO L225 Difference]: With dead ends: 209 [2018-10-01 01:04:32,711 INFO L226 Difference]: Without dead ends: 205 [2018-10-01 01:04:32,711 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:04:32,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-10-01 01:04:32,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-10-01 01:04:32,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-10-01 01:04:32,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 207 transitions. [2018-10-01 01:04:32,716 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 207 transitions. Word has length 200 [2018-10-01 01:04:32,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:32,716 INFO L480 AbstractCegarLoop]: Abstraction has 205 states and 207 transitions. [2018-10-01 01:04:32,716 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-10-01 01:04:32,716 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 207 transitions. [2018-10-01 01:04:32,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-10-01 01:04:32,717 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:32,717 INFO L375 BasicCegarLoop]: trace histogram [67, 67, 66, 1, 1, 1] [2018-10-01 01:04:32,717 INFO L423 AbstractCegarLoop]: === Iteration 111 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:32,717 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:32,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1915052553, now seen corresponding path program 66 times [2018-10-01 01:04:32,717 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:32,717 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:32,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:32,718 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:04:32,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:32,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:33,123 INFO L134 CoverageAnalysis]: Checked inductivity of 6700 backedges. 67 proven. 6633 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:33,124 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:33,124 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:33,131 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:04:33,260 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 68 check-sat command(s) [2018-10-01 01:04:33,260 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:33,264 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:34,275 INFO L134 CoverageAnalysis]: Checked inductivity of 6700 backedges. 0 proven. 6700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:34,295 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:34,295 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 136 [2018-10-01 01:04:34,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 137 states [2018-10-01 01:04:34,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2018-10-01 01:04:34,297 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:34,297 INFO L87 Difference]: Start difference. First operand 205 states and 207 transitions. Second operand 137 states. [2018-10-01 01:04:38,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:38,247 INFO L93 Difference]: Finished difference Result 212 states and 219 transitions. [2018-10-01 01:04:38,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-10-01 01:04:38,247 INFO L78 Accepts]: Start accepts. Automaton has 137 states. Word has length 203 [2018-10-01 01:04:38,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:38,247 INFO L225 Difference]: With dead ends: 212 [2018-10-01 01:04:38,248 INFO L226 Difference]: Without dead ends: 208 [2018-10-01 01:04:38,248 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 269 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7s Time [2018-10-01 01:04:38,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-10-01 01:04:38,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2018-10-01 01:04:38,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2018-10-01 01:04:38,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 210 transitions. [2018-10-01 01:04:38,252 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 210 transitions. Word has length 203 [2018-10-01 01:04:38,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:38,252 INFO L480 AbstractCegarLoop]: Abstraction has 208 states and 210 transitions. [2018-10-01 01:04:38,252 INFO L481 AbstractCegarLoop]: Interpolant automaton has 137 states. [2018-10-01 01:04:38,252 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 210 transitions. [2018-10-01 01:04:38,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-10-01 01:04:38,253 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:38,253 INFO L375 BasicCegarLoop]: trace histogram [68, 68, 67, 1, 1, 1] [2018-10-01 01:04:38,254 INFO L423 AbstractCegarLoop]: === Iteration 112 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:38,254 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:38,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1281452693, now seen corresponding path program 67 times [2018-10-01 01:04:38,254 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:38,254 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:38,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:38,255 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:38,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:38,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:38,664 INFO L134 CoverageAnalysis]: Checked inductivity of 6902 backedges. 68 proven. 6834 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:38,664 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:38,664 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:38,671 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:04:38,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:38,733 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:39,256 INFO L134 CoverageAnalysis]: Checked inductivity of 6902 backedges. 68 proven. 6834 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:39,276 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:39,276 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-10-01 01:04:39,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-01 01:04:39,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-01 01:04:39,277 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:39,277 INFO L87 Difference]: Start difference. First operand 208 states and 210 transitions. Second operand 70 states. [2018-10-01 01:04:39,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:39,603 INFO L93 Difference]: Finished difference Result 213 states and 218 transitions. [2018-10-01 01:04:39,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-01 01:04:39,603 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 206 [2018-10-01 01:04:39,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:39,604 INFO L225 Difference]: With dead ends: 213 [2018-10-01 01:04:39,604 INFO L226 Difference]: Without dead ends: 209 [2018-10-01 01:04:39,605 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:04:39,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-10-01 01:04:39,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-10-01 01:04:39,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-10-01 01:04:39,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 211 transitions. [2018-10-01 01:04:39,609 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 211 transitions. Word has length 206 [2018-10-01 01:04:39,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:39,609 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 211 transitions. [2018-10-01 01:04:39,609 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-01 01:04:39,609 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 211 transitions. [2018-10-01 01:04:39,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-10-01 01:04:39,610 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:39,610 INFO L375 BasicCegarLoop]: trace histogram [68, 68, 68, 1, 1] [2018-10-01 01:04:39,610 INFO L423 AbstractCegarLoop]: === Iteration 113 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:39,610 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:39,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1281452755, now seen corresponding path program 44 times [2018-10-01 01:04:39,610 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:39,611 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:39,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:39,611 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:04:39,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:39,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:40,013 INFO L134 CoverageAnalysis]: Checked inductivity of 6902 backedges. 0 proven. 6902 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:40,014 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:40,014 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:40,021 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:04:40,082 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:04:40,082 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:40,084 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:40,421 INFO L134 CoverageAnalysis]: Checked inductivity of 6902 backedges. 0 proven. 6902 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:40,440 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:40,440 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-10-01 01:04:40,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-01 01:04:40,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-01 01:04:40,441 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:40,441 INFO L87 Difference]: Start difference. First operand 209 states and 211 transitions. Second operand 71 states. [2018-10-01 01:04:40,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:40,967 INFO L93 Difference]: Finished difference Result 215 states and 221 transitions. [2018-10-01 01:04:40,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-01 01:04:40,968 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 206 [2018-10-01 01:04:40,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:40,969 INFO L225 Difference]: With dead ends: 215 [2018-10-01 01:04:40,969 INFO L226 Difference]: Without dead ends: 211 [2018-10-01 01:04:40,969 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:04:40,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-10-01 01:04:40,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-10-01 01:04:40,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-10-01 01:04:40,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 213 transitions. [2018-10-01 01:04:40,972 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 213 transitions. Word has length 206 [2018-10-01 01:04:40,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:40,972 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 213 transitions. [2018-10-01 01:04:40,972 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-01 01:04:40,972 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 213 transitions. [2018-10-01 01:04:40,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-10-01 01:04:40,973 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:40,973 INFO L375 BasicCegarLoop]: trace histogram [69, 69, 68, 1, 1, 1] [2018-10-01 01:04:40,973 INFO L423 AbstractCegarLoop]: === Iteration 114 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:40,973 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:40,973 INFO L82 PathProgramCache]: Analyzing trace with hash 2089289353, now seen corresponding path program 68 times [2018-10-01 01:04:40,973 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:40,973 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:40,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:40,974 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:40,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:41,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:41,404 INFO L134 CoverageAnalysis]: Checked inductivity of 7107 backedges. 69 proven. 7038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:41,404 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:41,405 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:41,412 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:04:41,488 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:04:41,489 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:41,492 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:41,891 INFO L134 CoverageAnalysis]: Checked inductivity of 7107 backedges. 69 proven. 7038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:41,910 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:41,911 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-10-01 01:04:41,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-01 01:04:41,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-01 01:04:41,912 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:41,912 INFO L87 Difference]: Start difference. First operand 211 states and 213 transitions. Second operand 71 states. [2018-10-01 01:04:42,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:42,444 INFO L93 Difference]: Finished difference Result 216 states and 221 transitions. [2018-10-01 01:04:42,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-01 01:04:42,444 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 209 [2018-10-01 01:04:42,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:42,445 INFO L225 Difference]: With dead ends: 216 [2018-10-01 01:04:42,445 INFO L226 Difference]: Without dead ends: 212 [2018-10-01 01:04:42,445 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:04:42,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2018-10-01 01:04:42,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2018-10-01 01:04:42,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2018-10-01 01:04:42,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 214 transitions. [2018-10-01 01:04:42,448 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 214 transitions. Word has length 209 [2018-10-01 01:04:42,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:42,448 INFO L480 AbstractCegarLoop]: Abstraction has 212 states and 214 transitions. [2018-10-01 01:04:42,448 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-01 01:04:42,448 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 214 transitions. [2018-10-01 01:04:42,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-10-01 01:04:42,449 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:42,449 INFO L375 BasicCegarLoop]: trace histogram [69, 69, 69, 1, 1] [2018-10-01 01:04:42,449 INFO L423 AbstractCegarLoop]: === Iteration 115 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:42,449 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:42,449 INFO L82 PathProgramCache]: Analyzing trace with hash 2089289415, now seen corresponding path program 45 times [2018-10-01 01:04:42,450 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:42,450 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:42,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:42,450 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:42,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:42,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:42,858 INFO L134 CoverageAnalysis]: Checked inductivity of 7107 backedges. 0 proven. 7107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:42,859 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:42,859 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:42,865 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:04:43,017 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2018-10-01 01:04:43,017 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:43,021 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:43,372 INFO L134 CoverageAnalysis]: Checked inductivity of 7107 backedges. 0 proven. 7107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:43,394 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:43,394 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-10-01 01:04:43,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-01 01:04:43,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-01 01:04:43,395 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:43,395 INFO L87 Difference]: Start difference. First operand 212 states and 214 transitions. Second operand 72 states. [2018-10-01 01:04:44,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:44,103 INFO L93 Difference]: Finished difference Result 218 states and 224 transitions. [2018-10-01 01:04:44,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-01 01:04:44,104 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 209 [2018-10-01 01:04:44,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:44,105 INFO L225 Difference]: With dead ends: 218 [2018-10-01 01:04:44,105 INFO L226 Difference]: Without dead ends: 214 [2018-10-01 01:04:44,105 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:04:44,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2018-10-01 01:04:44,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2018-10-01 01:04:44,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-10-01 01:04:44,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 216 transitions. [2018-10-01 01:04:44,108 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 216 transitions. Word has length 209 [2018-10-01 01:04:44,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:44,108 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 216 transitions. [2018-10-01 01:04:44,108 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-01 01:04:44,108 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 216 transitions. [2018-10-01 01:04:44,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-10-01 01:04:44,109 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:44,109 INFO L375 BasicCegarLoop]: trace histogram [70, 70, 69, 1, 1, 1] [2018-10-01 01:04:44,109 INFO L423 AbstractCegarLoop]: === Iteration 116 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:44,109 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:44,109 INFO L82 PathProgramCache]: Analyzing trace with hash -645499371, now seen corresponding path program 69 times [2018-10-01 01:04:44,109 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:44,109 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:44,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:44,110 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:44,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:44,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:44,632 INFO L134 CoverageAnalysis]: Checked inductivity of 7315 backedges. 70 proven. 7245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:44,632 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:44,632 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:44,643 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:04:44,790 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 71 check-sat command(s) [2018-10-01 01:04:44,791 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:44,794 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:45,609 INFO L134 CoverageAnalysis]: Checked inductivity of 7315 backedges. 0 proven. 7315 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:45,629 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:45,629 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 142 [2018-10-01 01:04:45,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 143 states [2018-10-01 01:04:45,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2018-10-01 01:04:45,631 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:45,631 INFO L87 Difference]: Start difference. First operand 214 states and 216 transitions. Second operand 143 states. [2018-10-01 01:04:49,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:49,817 INFO L93 Difference]: Finished difference Result 221 states and 228 transitions. [2018-10-01 01:04:49,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2018-10-01 01:04:49,817 INFO L78 Accepts]: Start accepts. Automaton has 143 states. Word has length 212 [2018-10-01 01:04:49,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:49,818 INFO L225 Difference]: With dead ends: 221 [2018-10-01 01:04:49,818 INFO L226 Difference]: Without dead ends: 217 [2018-10-01 01:04:49,818 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 281 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8s Time [2018-10-01 01:04:49,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-10-01 01:04:49,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-10-01 01:04:49,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-10-01 01:04:49,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 219 transitions. [2018-10-01 01:04:49,821 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 219 transitions. Word has length 212 [2018-10-01 01:04:49,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:49,821 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 219 transitions. [2018-10-01 01:04:49,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has 143 states. [2018-10-01 01:04:49,822 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 219 transitions. [2018-10-01 01:04:49,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-10-01 01:04:49,822 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:49,822 INFO L375 BasicCegarLoop]: trace histogram [71, 71, 70, 1, 1, 1] [2018-10-01 01:04:49,822 INFO L423 AbstractCegarLoop]: === Iteration 117 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:49,822 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:49,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1501738231, now seen corresponding path program 70 times [2018-10-01 01:04:49,823 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:49,823 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:49,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:49,823 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:49,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:49,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:50,239 INFO L134 CoverageAnalysis]: Checked inductivity of 7526 backedges. 71 proven. 7455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:50,239 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:50,239 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:50,246 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:04:50,310 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:04:50,310 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:50,313 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:50,666 INFO L134 CoverageAnalysis]: Checked inductivity of 7526 backedges. 71 proven. 7455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:50,686 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:50,686 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2018-10-01 01:04:50,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-01 01:04:50,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-01 01:04:50,687 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:50,687 INFO L87 Difference]: Start difference. First operand 217 states and 219 transitions. Second operand 73 states. [2018-10-01 01:04:51,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:51,238 INFO L93 Difference]: Finished difference Result 222 states and 227 transitions. [2018-10-01 01:04:51,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-01 01:04:51,238 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 215 [2018-10-01 01:04:51,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:51,239 INFO L225 Difference]: With dead ends: 222 [2018-10-01 01:04:51,239 INFO L226 Difference]: Without dead ends: 218 [2018-10-01 01:04:51,239 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:04:51,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-10-01 01:04:51,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2018-10-01 01:04:51,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2018-10-01 01:04:51,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 220 transitions. [2018-10-01 01:04:51,242 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 220 transitions. Word has length 215 [2018-10-01 01:04:51,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:51,243 INFO L480 AbstractCegarLoop]: Abstraction has 218 states and 220 transitions. [2018-10-01 01:04:51,243 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-01 01:04:51,243 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 220 transitions. [2018-10-01 01:04:51,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-10-01 01:04:51,243 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:51,243 INFO L375 BasicCegarLoop]: trace histogram [71, 71, 71, 1, 1] [2018-10-01 01:04:51,244 INFO L423 AbstractCegarLoop]: === Iteration 118 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:51,244 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:51,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1501738169, now seen corresponding path program 46 times [2018-10-01 01:04:51,244 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:51,244 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:51,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:51,244 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:51,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:51,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:51,662 INFO L134 CoverageAnalysis]: Checked inductivity of 7526 backedges. 0 proven. 7526 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:51,663 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:51,663 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:51,670 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:04:51,730 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:04:51,730 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:51,733 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:52,086 INFO L134 CoverageAnalysis]: Checked inductivity of 7526 backedges. 0 proven. 7526 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:52,106 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:52,106 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2018-10-01 01:04:52,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-01 01:04:52,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-01 01:04:52,107 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:52,107 INFO L87 Difference]: Start difference. First operand 218 states and 220 transitions. Second operand 74 states. [2018-10-01 01:04:52,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:52,563 INFO L93 Difference]: Finished difference Result 224 states and 230 transitions. [2018-10-01 01:04:52,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-01 01:04:52,563 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 215 [2018-10-01 01:04:52,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:52,564 INFO L225 Difference]: With dead ends: 224 [2018-10-01 01:04:52,564 INFO L226 Difference]: Without dead ends: 220 [2018-10-01 01:04:52,564 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:04:52,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2018-10-01 01:04:52,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2018-10-01 01:04:52,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2018-10-01 01:04:52,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 222 transitions. [2018-10-01 01:04:52,567 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 222 transitions. Word has length 215 [2018-10-01 01:04:52,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:52,568 INFO L480 AbstractCegarLoop]: Abstraction has 220 states and 222 transitions. [2018-10-01 01:04:52,568 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-01 01:04:52,568 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 222 transitions. [2018-10-01 01:04:52,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-10-01 01:04:52,569 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:52,569 INFO L375 BasicCegarLoop]: trace histogram [72, 72, 71, 1, 1, 1] [2018-10-01 01:04:52,569 INFO L423 AbstractCegarLoop]: === Iteration 119 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:52,569 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:52,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1902845547, now seen corresponding path program 71 times [2018-10-01 01:04:52,569 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:52,569 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:52,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:52,570 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:52,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:52,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:52,999 INFO L134 CoverageAnalysis]: Checked inductivity of 7740 backedges. 72 proven. 7668 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:52,999 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:53,000 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:53,008 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:04:53,154 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 73 check-sat command(s) [2018-10-01 01:04:53,154 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:53,158 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:53,509 INFO L134 CoverageAnalysis]: Checked inductivity of 7740 backedges. 72 proven. 7668 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:53,529 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:53,529 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2018-10-01 01:04:53,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-01 01:04:53,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-01 01:04:53,530 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:53,530 INFO L87 Difference]: Start difference. First operand 220 states and 222 transitions. Second operand 74 states. [2018-10-01 01:04:54,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:54,208 INFO L93 Difference]: Finished difference Result 225 states and 230 transitions. [2018-10-01 01:04:54,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-01 01:04:54,209 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 218 [2018-10-01 01:04:54,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:54,209 INFO L225 Difference]: With dead ends: 225 [2018-10-01 01:04:54,209 INFO L226 Difference]: Without dead ends: 221 [2018-10-01 01:04:54,209 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:04:54,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-10-01 01:04:54,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2018-10-01 01:04:54,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-10-01 01:04:54,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 223 transitions. [2018-10-01 01:04:54,212 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 223 transitions. Word has length 218 [2018-10-01 01:04:54,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:54,213 INFO L480 AbstractCegarLoop]: Abstraction has 221 states and 223 transitions. [2018-10-01 01:04:54,213 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-01 01:04:54,213 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 223 transitions. [2018-10-01 01:04:54,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-10-01 01:04:54,213 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:54,213 INFO L375 BasicCegarLoop]: trace histogram [72, 72, 72, 1, 1] [2018-10-01 01:04:54,214 INFO L423 AbstractCegarLoop]: === Iteration 120 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:54,214 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:54,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1902845485, now seen corresponding path program 47 times [2018-10-01 01:04:54,214 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:54,214 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:54,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:54,215 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:54,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:54,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:54,739 INFO L134 CoverageAnalysis]: Checked inductivity of 7740 backedges. 0 proven. 7740 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:54,739 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:54,740 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:54,747 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:04:54,935 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 73 check-sat command(s) [2018-10-01 01:04:54,935 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:54,938 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:55,305 INFO L134 CoverageAnalysis]: Checked inductivity of 7740 backedges. 0 proven. 7740 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:55,326 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:55,326 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2018-10-01 01:04:55,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-10-01 01:04:55,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-10-01 01:04:55,327 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:55,327 INFO L87 Difference]: Start difference. First operand 221 states and 223 transitions. Second operand 75 states. [2018-10-01 01:04:55,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:55,772 INFO L93 Difference]: Finished difference Result 227 states and 233 transitions. [2018-10-01 01:04:55,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-01 01:04:55,772 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 218 [2018-10-01 01:04:55,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:55,773 INFO L225 Difference]: With dead ends: 227 [2018-10-01 01:04:55,773 INFO L226 Difference]: Without dead ends: 223 [2018-10-01 01:04:55,773 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:04:55,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-10-01 01:04:55,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-10-01 01:04:55,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-10-01 01:04:55,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 225 transitions. [2018-10-01 01:04:55,777 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 225 transitions. Word has length 218 [2018-10-01 01:04:55,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:55,777 INFO L480 AbstractCegarLoop]: Abstraction has 223 states and 225 transitions. [2018-10-01 01:04:55,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-10-01 01:04:55,777 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 225 transitions. [2018-10-01 01:04:55,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-10-01 01:04:55,778 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:55,778 INFO L375 BasicCegarLoop]: trace histogram [73, 73, 72, 1, 1, 1] [2018-10-01 01:04:55,778 INFO L423 AbstractCegarLoop]: === Iteration 121 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:55,778 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:55,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1603088265, now seen corresponding path program 72 times [2018-10-01 01:04:55,779 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:55,779 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:55,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:55,779 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:55,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:55,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:56,207 INFO L134 CoverageAnalysis]: Checked inductivity of 7957 backedges. 73 proven. 7884 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:56,207 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:56,207 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:56,215 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:04:56,357 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 74 check-sat command(s) [2018-10-01 01:04:56,357 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:56,361 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:57,260 INFO L134 CoverageAnalysis]: Checked inductivity of 7957 backedges. 0 proven. 7957 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:57,282 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:57,283 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 148 [2018-10-01 01:04:57,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 149 states [2018-10-01 01:04:57,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2018-10-01 01:04:57,284 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:57,284 INFO L87 Difference]: Start difference. First operand 223 states and 225 transitions. Second operand 149 states. [2018-10-01 01:05:02,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:02,063 INFO L93 Difference]: Finished difference Result 230 states and 237 transitions. [2018-10-01 01:05:02,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2018-10-01 01:05:02,063 INFO L78 Accepts]: Start accepts. Automaton has 149 states. Word has length 221 [2018-10-01 01:05:02,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:02,064 INFO L225 Difference]: With dead ends: 230 [2018-10-01 01:05:02,064 INFO L226 Difference]: Without dead ends: 226 [2018-10-01 01:05:02,064 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 293 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1s Time [2018-10-01 01:05:02,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-10-01 01:05:02,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2018-10-01 01:05:02,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2018-10-01 01:05:02,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 228 transitions. [2018-10-01 01:05:02,067 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 228 transitions. Word has length 221 [2018-10-01 01:05:02,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:02,067 INFO L480 AbstractCegarLoop]: Abstraction has 226 states and 228 transitions. [2018-10-01 01:05:02,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has 149 states. [2018-10-01 01:05:02,067 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 228 transitions. [2018-10-01 01:05:02,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-10-01 01:05:02,068 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:02,068 INFO L375 BasicCegarLoop]: trace histogram [74, 74, 73, 1, 1, 1] [2018-10-01 01:05:02,068 INFO L423 AbstractCegarLoop]: === Iteration 122 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:02,068 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:02,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1862577429, now seen corresponding path program 73 times [2018-10-01 01:05:02,069 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:02,069 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:02,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:02,069 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:02,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:02,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:02,508 INFO L134 CoverageAnalysis]: Checked inductivity of 8177 backedges. 74 proven. 8103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:02,508 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:02,508 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:05:02,515 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:05:02,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:02,584 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:03,000 INFO L134 CoverageAnalysis]: Checked inductivity of 8177 backedges. 74 proven. 8103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:03,020 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:03,020 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2018-10-01 01:05:03,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-01 01:05:03,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-01 01:05:03,021 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:03,021 INFO L87 Difference]: Start difference. First operand 226 states and 228 transitions. Second operand 76 states. [2018-10-01 01:05:03,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:03,564 INFO L93 Difference]: Finished difference Result 231 states and 236 transitions. [2018-10-01 01:05:03,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-01 01:05:03,564 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 224 [2018-10-01 01:05:03,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:03,565 INFO L225 Difference]: With dead ends: 231 [2018-10-01 01:05:03,565 INFO L226 Difference]: Without dead ends: 227 [2018-10-01 01:05:03,565 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:05:03,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-10-01 01:05:03,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-10-01 01:05:03,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-10-01 01:05:03,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 229 transitions. [2018-10-01 01:05:03,568 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 229 transitions. Word has length 224 [2018-10-01 01:05:03,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:03,569 INFO L480 AbstractCegarLoop]: Abstraction has 227 states and 229 transitions. [2018-10-01 01:05:03,569 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-01 01:05:03,569 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 229 transitions. [2018-10-01 01:05:03,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-10-01 01:05:03,570 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:03,570 INFO L375 BasicCegarLoop]: trace histogram [74, 74, 74, 1, 1] [2018-10-01 01:05:03,570 INFO L423 AbstractCegarLoop]: === Iteration 123 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:03,570 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:03,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1862577491, now seen corresponding path program 48 times [2018-10-01 01:05:03,570 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:03,570 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:03,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:03,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:05:03,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:03,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:04,052 INFO L134 CoverageAnalysis]: Checked inductivity of 8177 backedges. 0 proven. 8177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:04,052 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:04,053 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:05:04,059 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:05:04,205 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 75 check-sat command(s) [2018-10-01 01:05:04,206 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:05:04,209 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:04,793 INFO L134 CoverageAnalysis]: Checked inductivity of 8177 backedges. 0 proven. 8177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:04,815 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:04,815 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2018-10-01 01:05:04,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-10-01 01:05:04,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-10-01 01:05:04,816 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:04,816 INFO L87 Difference]: Start difference. First operand 227 states and 229 transitions. Second operand 77 states. [2018-10-01 01:05:05,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:05,291 INFO L93 Difference]: Finished difference Result 233 states and 239 transitions. [2018-10-01 01:05:05,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-01 01:05:05,292 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 224 [2018-10-01 01:05:05,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:05,293 INFO L225 Difference]: With dead ends: 233 [2018-10-01 01:05:05,293 INFO L226 Difference]: Without dead ends: 229 [2018-10-01 01:05:05,293 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 01:05:05,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-10-01 01:05:05,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2018-10-01 01:05:05,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-10-01 01:05:05,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 231 transitions. [2018-10-01 01:05:05,296 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 231 transitions. Word has length 224 [2018-10-01 01:05:05,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:05,296 INFO L480 AbstractCegarLoop]: Abstraction has 229 states and 231 transitions. [2018-10-01 01:05:05,296 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-10-01 01:05:05,296 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 231 transitions. [2018-10-01 01:05:05,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-10-01 01:05:05,298 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:05,298 INFO L375 BasicCegarLoop]: trace histogram [75, 75, 74, 1, 1, 1] [2018-10-01 01:05:05,298 INFO L423 AbstractCegarLoop]: === Iteration 124 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:05,298 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:05,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1363129353, now seen corresponding path program 74 times [2018-10-01 01:05:05,298 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:05,299 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:05,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:05,299 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:05,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:05,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:05,761 INFO L134 CoverageAnalysis]: Checked inductivity of 8400 backedges. 75 proven. 8325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:05,761 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:05,761 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:05:05,768 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:05:05,834 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:05:05,834 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:05:05,837 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:06,214 INFO L134 CoverageAnalysis]: Checked inductivity of 8400 backedges. 75 proven. 8325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:06,234 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:06,234 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2018-10-01 01:05:06,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-10-01 01:05:06,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-10-01 01:05:06,235 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:06,235 INFO L87 Difference]: Start difference. First operand 229 states and 231 transitions. Second operand 77 states. [2018-10-01 01:05:06,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:06,679 INFO L93 Difference]: Finished difference Result 234 states and 239 transitions. [2018-10-01 01:05:06,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-01 01:05:06,680 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 227 [2018-10-01 01:05:06,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:06,681 INFO L225 Difference]: With dead ends: 234 [2018-10-01 01:05:06,681 INFO L226 Difference]: Without dead ends: 230 [2018-10-01 01:05:06,681 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:05:06,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2018-10-01 01:05:06,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2018-10-01 01:05:06,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2018-10-01 01:05:06,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 232 transitions. [2018-10-01 01:05:06,685 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 232 transitions. Word has length 227 [2018-10-01 01:05:06,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:06,686 INFO L480 AbstractCegarLoop]: Abstraction has 230 states and 232 transitions. [2018-10-01 01:05:06,686 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-10-01 01:05:06,686 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 232 transitions. [2018-10-01 01:05:06,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-10-01 01:05:06,686 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:06,686 INFO L375 BasicCegarLoop]: trace histogram [75, 75, 75, 1, 1] [2018-10-01 01:05:06,687 INFO L423 AbstractCegarLoop]: === Iteration 125 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:06,687 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:06,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1363129415, now seen corresponding path program 49 times [2018-10-01 01:05:06,687 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:06,687 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:06,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:06,687 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:06,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:06,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:07,158 INFO L134 CoverageAnalysis]: Checked inductivity of 8400 backedges. 0 proven. 8400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:07,159 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:07,159 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:05:07,166 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:05:07,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:07,234 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:07,614 INFO L134 CoverageAnalysis]: Checked inductivity of 8400 backedges. 0 proven. 8400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:07,635 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:07,635 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2018-10-01 01:05:07,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-10-01 01:05:07,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-10-01 01:05:07,636 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:07,636 INFO L87 Difference]: Start difference. First operand 230 states and 232 transitions. Second operand 78 states. [2018-10-01 01:05:08,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:08,120 INFO L93 Difference]: Finished difference Result 236 states and 242 transitions. [2018-10-01 01:05:08,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-10-01 01:05:08,121 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 227 [2018-10-01 01:05:08,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:08,122 INFO L225 Difference]: With dead ends: 236 [2018-10-01 01:05:08,122 INFO L226 Difference]: Without dead ends: 232 [2018-10-01 01:05:08,122 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:05:08,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2018-10-01 01:05:08,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2018-10-01 01:05:08,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2018-10-01 01:05:08,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 234 transitions. [2018-10-01 01:05:08,125 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 234 transitions. Word has length 227 [2018-10-01 01:05:08,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:08,125 INFO L480 AbstractCegarLoop]: Abstraction has 232 states and 234 transitions. [2018-10-01 01:05:08,125 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-10-01 01:05:08,125 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 234 transitions. [2018-10-01 01:05:08,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-10-01 01:05:08,126 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:08,126 INFO L375 BasicCegarLoop]: trace histogram [76, 76, 75, 1, 1, 1] [2018-10-01 01:05:08,126 INFO L423 AbstractCegarLoop]: === Iteration 126 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:08,127 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:08,127 INFO L82 PathProgramCache]: Analyzing trace with hash 72210581, now seen corresponding path program 75 times [2018-10-01 01:05:08,127 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:08,127 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:08,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:08,127 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:05:08,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:08,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:08,632 INFO L134 CoverageAnalysis]: Checked inductivity of 8626 backedges. 76 proven. 8550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:08,632 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:08,632 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:05:08,639 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:05:08,799 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 77 check-sat command(s) [2018-10-01 01:05:08,799 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:05:08,802 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:09,915 INFO L134 CoverageAnalysis]: Checked inductivity of 8626 backedges. 0 proven. 8626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:09,935 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:09,935 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 154 [2018-10-01 01:05:09,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 155 states [2018-10-01 01:05:09,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2018-10-01 01:05:09,937 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:09,937 INFO L87 Difference]: Start difference. First operand 232 states and 234 transitions. Second operand 155 states. [2018-10-01 01:05:14,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:14,925 INFO L93 Difference]: Finished difference Result 239 states and 246 transitions. [2018-10-01 01:05:14,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2018-10-01 01:05:14,925 INFO L78 Accepts]: Start accepts. Automaton has 155 states. Word has length 230 [2018-10-01 01:05:14,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:14,925 INFO L225 Difference]: With dead ends: 239 [2018-10-01 01:05:14,926 INFO L226 Difference]: Without dead ends: 235 [2018-10-01 01:05:14,926 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 305 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3s Time [2018-10-01 01:05:14,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-10-01 01:05:14,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-10-01 01:05:14,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-10-01 01:05:14,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 237 transitions. [2018-10-01 01:05:14,929 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 237 transitions. Word has length 230 [2018-10-01 01:05:14,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:14,929 INFO L480 AbstractCegarLoop]: Abstraction has 235 states and 237 transitions. [2018-10-01 01:05:14,929 INFO L481 AbstractCegarLoop]: Interpolant automaton has 155 states. [2018-10-01 01:05:14,930 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 237 transitions. [2018-10-01 01:05:14,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-10-01 01:05:14,930 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:14,931 INFO L375 BasicCegarLoop]: trace histogram [77, 77, 76, 1, 1, 1] [2018-10-01 01:05:14,931 INFO L423 AbstractCegarLoop]: === Iteration 127 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:14,931 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:14,931 INFO L82 PathProgramCache]: Analyzing trace with hash -551757687, now seen corresponding path program 76 times [2018-10-01 01:05:14,931 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:14,931 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:14,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:14,932 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:14,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:14,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:15,446 INFO L134 CoverageAnalysis]: Checked inductivity of 8855 backedges. 77 proven. 8778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:15,447 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:15,447 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:05:15,455 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:05:15,521 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:05:15,521 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:05:15,524 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:15,909 INFO L134 CoverageAnalysis]: Checked inductivity of 8855 backedges. 77 proven. 8778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:15,931 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:15,931 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2018-10-01 01:05:15,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-10-01 01:05:15,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-10-01 01:05:15,932 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:15,932 INFO L87 Difference]: Start difference. First operand 235 states and 237 transitions. Second operand 79 states. [2018-10-01 01:05:16,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:16,607 INFO L93 Difference]: Finished difference Result 240 states and 245 transitions. [2018-10-01 01:05:16,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-10-01 01:05:16,607 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 233 [2018-10-01 01:05:16,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:16,608 INFO L225 Difference]: With dead ends: 240 [2018-10-01 01:05:16,608 INFO L226 Difference]: Without dead ends: 236 [2018-10-01 01:05:16,609 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:05:16,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2018-10-01 01:05:16,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2018-10-01 01:05:16,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2018-10-01 01:05:16,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 238 transitions. [2018-10-01 01:05:16,613 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 238 transitions. Word has length 233 [2018-10-01 01:05:16,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:16,613 INFO L480 AbstractCegarLoop]: Abstraction has 236 states and 238 transitions. [2018-10-01 01:05:16,613 INFO L481 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-10-01 01:05:16,613 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 238 transitions. [2018-10-01 01:05:16,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-10-01 01:05:16,614 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:16,614 INFO L375 BasicCegarLoop]: trace histogram [77, 77, 77, 1, 1] [2018-10-01 01:05:16,614 INFO L423 AbstractCegarLoop]: === Iteration 128 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:16,614 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:16,615 INFO L82 PathProgramCache]: Analyzing trace with hash -551757625, now seen corresponding path program 50 times [2018-10-01 01:05:16,615 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:16,615 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:16,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:16,616 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:16,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:16,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:17,097 INFO L134 CoverageAnalysis]: Checked inductivity of 8855 backedges. 0 proven. 8855 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:17,097 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:17,097 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:05:17,105 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:05:17,173 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:05:17,173 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:05:17,176 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:17,560 INFO L134 CoverageAnalysis]: Checked inductivity of 8855 backedges. 0 proven. 8855 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:17,580 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:17,580 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2018-10-01 01:05:17,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-01 01:05:17,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-01 01:05:17,582 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:17,582 INFO L87 Difference]: Start difference. First operand 236 states and 238 transitions. Second operand 80 states. [2018-10-01 01:05:18,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:18,035 INFO L93 Difference]: Finished difference Result 242 states and 248 transitions. [2018-10-01 01:05:18,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-10-01 01:05:18,036 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 233 [2018-10-01 01:05:18,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:18,037 INFO L225 Difference]: With dead ends: 242 [2018-10-01 01:05:18,037 INFO L226 Difference]: Without dead ends: 238 [2018-10-01 01:05:18,037 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:05:18,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2018-10-01 01:05:18,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2018-10-01 01:05:18,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2018-10-01 01:05:18,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 240 transitions. [2018-10-01 01:05:18,042 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 240 transitions. Word has length 233 [2018-10-01 01:05:18,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:18,042 INFO L480 AbstractCegarLoop]: Abstraction has 238 states and 240 transitions. [2018-10-01 01:05:18,042 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-01 01:05:18,042 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 240 transitions. [2018-10-01 01:05:18,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-10-01 01:05:18,043 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:18,043 INFO L375 BasicCegarLoop]: trace histogram [78, 78, 77, 1, 1, 1] [2018-10-01 01:05:18,043 INFO L423 AbstractCegarLoop]: === Iteration 129 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:18,043 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:18,044 INFO L82 PathProgramCache]: Analyzing trace with hash -571972587, now seen corresponding path program 77 times [2018-10-01 01:05:18,044 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:18,044 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:18,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:18,044 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:18,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:18,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:18,529 INFO L134 CoverageAnalysis]: Checked inductivity of 9087 backedges. 78 proven. 9009 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:18,529 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:18,529 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:05:18,541 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:05:18,699 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 79 check-sat command(s) [2018-10-01 01:05:18,699 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:05:18,703 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:19,072 INFO L134 CoverageAnalysis]: Checked inductivity of 9087 backedges. 78 proven. 9009 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:19,092 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:19,092 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2018-10-01 01:05:19,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-01 01:05:19,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-01 01:05:19,094 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:19,094 INFO L87 Difference]: Start difference. First operand 238 states and 240 transitions. Second operand 80 states. [2018-10-01 01:05:19,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:19,794 INFO L93 Difference]: Finished difference Result 243 states and 248 transitions. [2018-10-01 01:05:19,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-10-01 01:05:19,795 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 236 [2018-10-01 01:05:19,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:19,795 INFO L225 Difference]: With dead ends: 243 [2018-10-01 01:05:19,795 INFO L226 Difference]: Without dead ends: 239 [2018-10-01 01:05:19,796 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:05:19,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-10-01 01:05:19,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2018-10-01 01:05:19,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-10-01 01:05:19,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 241 transitions. [2018-10-01 01:05:19,800 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 241 transitions. Word has length 236 [2018-10-01 01:05:19,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:19,800 INFO L480 AbstractCegarLoop]: Abstraction has 239 states and 241 transitions. [2018-10-01 01:05:19,800 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-01 01:05:19,800 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 241 transitions. [2018-10-01 01:05:19,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-10-01 01:05:19,801 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:19,801 INFO L375 BasicCegarLoop]: trace histogram [78, 78, 78, 1, 1] [2018-10-01 01:05:19,801 INFO L423 AbstractCegarLoop]: === Iteration 130 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:19,801 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:19,802 INFO L82 PathProgramCache]: Analyzing trace with hash -571972525, now seen corresponding path program 51 times [2018-10-01 01:05:19,802 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:19,802 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:19,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:19,803 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:19,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:19,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:20,349 INFO L134 CoverageAnalysis]: Checked inductivity of 9087 backedges. 0 proven. 9087 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:20,350 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:20,350 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:05:20,360 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:05:20,525 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 79 check-sat command(s) [2018-10-01 01:05:20,525 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:05:20,529 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:20,903 INFO L134 CoverageAnalysis]: Checked inductivity of 9087 backedges. 0 proven. 9087 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:20,923 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:20,923 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2018-10-01 01:05:20,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-10-01 01:05:20,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-10-01 01:05:20,925 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:20,925 INFO L87 Difference]: Start difference. First operand 239 states and 241 transitions. Second operand 81 states. [2018-10-01 01:05:21,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:21,446 INFO L93 Difference]: Finished difference Result 245 states and 251 transitions. [2018-10-01 01:05:21,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-01 01:05:21,447 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 236 [2018-10-01 01:05:21,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:21,447 INFO L225 Difference]: With dead ends: 245 [2018-10-01 01:05:21,447 INFO L226 Difference]: Without dead ends: 241 [2018-10-01 01:05:21,447 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:05:21,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-10-01 01:05:21,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2018-10-01 01:05:21,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-10-01 01:05:21,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 243 transitions. [2018-10-01 01:05:21,451 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 243 transitions. Word has length 236 [2018-10-01 01:05:21,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:21,452 INFO L480 AbstractCegarLoop]: Abstraction has 241 states and 243 transitions. [2018-10-01 01:05:21,452 INFO L481 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-10-01 01:05:21,452 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 243 transitions. [2018-10-01 01:05:21,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2018-10-01 01:05:21,453 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:21,453 INFO L375 BasicCegarLoop]: trace histogram [79, 79, 78, 1, 1, 1] [2018-10-01 01:05:21,453 INFO L423 AbstractCegarLoop]: === Iteration 131 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:21,453 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:21,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1498637047, now seen corresponding path program 78 times [2018-10-01 01:05:21,454 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:21,454 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:21,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:21,454 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:21,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:21,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:21,955 INFO L134 CoverageAnalysis]: Checked inductivity of 9322 backedges. 79 proven. 9243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:21,955 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:21,955 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:05:21,962 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:05:22,134 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 80 check-sat command(s) [2018-10-01 01:05:22,135 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:05:22,139 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:23,234 INFO L134 CoverageAnalysis]: Checked inductivity of 9322 backedges. 0 proven. 9322 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:23,254 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:23,254 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 160 [2018-10-01 01:05:23,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 161 states [2018-10-01 01:05:23,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2018-10-01 01:05:23,256 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:23,256 INFO L87 Difference]: Start difference. First operand 241 states and 243 transitions. Second operand 161 states. [2018-10-01 01:05:28,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:28,489 INFO L93 Difference]: Finished difference Result 248 states and 255 transitions. [2018-10-01 01:05:28,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2018-10-01 01:05:28,489 INFO L78 Accepts]: Start accepts. Automaton has 161 states. Word has length 239 [2018-10-01 01:05:28,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:28,490 INFO L225 Difference]: With dead ends: 248 [2018-10-01 01:05:28,490 INFO L226 Difference]: Without dead ends: 244 [2018-10-01 01:05:28,490 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 317 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7s Time [2018-10-01 01:05:28,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2018-10-01 01:05:28,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2018-10-01 01:05:28,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2018-10-01 01:05:28,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 246 transitions. [2018-10-01 01:05:28,493 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 246 transitions. Word has length 239 [2018-10-01 01:05:28,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:28,494 INFO L480 AbstractCegarLoop]: Abstraction has 244 states and 246 transitions. [2018-10-01 01:05:28,494 INFO L481 AbstractCegarLoop]: Interpolant automaton has 161 states. [2018-10-01 01:05:28,494 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 246 transitions. [2018-10-01 01:05:28,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-10-01 01:05:28,494 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:28,494 INFO L375 BasicCegarLoop]: trace histogram [80, 80, 79, 1, 1, 1] [2018-10-01 01:05:28,495 INFO L423 AbstractCegarLoop]: === Iteration 132 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:28,495 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:28,495 INFO L82 PathProgramCache]: Analyzing trace with hash 290213781, now seen corresponding path program 79 times [2018-10-01 01:05:28,495 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:28,495 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:28,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:28,495 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:28,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:28,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:28,984 INFO L134 CoverageAnalysis]: Checked inductivity of 9560 backedges. 80 proven. 9480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:28,985 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:28,985 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:05:28,993 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:05:29,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:29,067 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:29,489 INFO L134 CoverageAnalysis]: Checked inductivity of 9560 backedges. 80 proven. 9480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:29,508 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:29,509 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2018-10-01 01:05:29,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-10-01 01:05:29,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-10-01 01:05:29,510 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:29,510 INFO L87 Difference]: Start difference. First operand 244 states and 246 transitions. Second operand 82 states. [2018-10-01 01:05:30,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:30,204 INFO L93 Difference]: Finished difference Result 249 states and 254 transitions. [2018-10-01 01:05:30,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-10-01 01:05:30,204 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 242 [2018-10-01 01:05:30,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:30,205 INFO L225 Difference]: With dead ends: 249 [2018-10-01 01:05:30,205 INFO L226 Difference]: Without dead ends: 245 [2018-10-01 01:05:30,205 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:05:30,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-10-01 01:05:30,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2018-10-01 01:05:30,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-10-01 01:05:30,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 247 transitions. [2018-10-01 01:05:30,209 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 247 transitions. Word has length 242 [2018-10-01 01:05:30,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:30,209 INFO L480 AbstractCegarLoop]: Abstraction has 245 states and 247 transitions. [2018-10-01 01:05:30,209 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-10-01 01:05:30,210 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 247 transitions. [2018-10-01 01:05:30,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-10-01 01:05:30,210 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:30,210 INFO L375 BasicCegarLoop]: trace histogram [80, 80, 80, 1, 1] [2018-10-01 01:05:30,210 INFO L423 AbstractCegarLoop]: === Iteration 133 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:30,210 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:30,211 INFO L82 PathProgramCache]: Analyzing trace with hash 290213843, now seen corresponding path program 52 times [2018-10-01 01:05:30,211 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:30,211 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:30,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:30,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:05:30,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:30,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:30,716 INFO L134 CoverageAnalysis]: Checked inductivity of 9560 backedges. 0 proven. 9560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:30,716 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:30,716 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:05:30,724 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:05:30,793 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:05:30,793 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:05:30,796 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:31,213 INFO L134 CoverageAnalysis]: Checked inductivity of 9560 backedges. 0 proven. 9560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:31,233 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:31,233 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2018-10-01 01:05:31,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-10-01 01:05:31,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-10-01 01:05:31,234 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:31,234 INFO L87 Difference]: Start difference. First operand 245 states and 247 transitions. Second operand 83 states. [2018-10-01 01:05:31,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:31,729 INFO L93 Difference]: Finished difference Result 251 states and 257 transitions. [2018-10-01 01:05:31,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-10-01 01:05:31,730 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 242 [2018-10-01 01:05:31,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:31,730 INFO L225 Difference]: With dead ends: 251 [2018-10-01 01:05:31,730 INFO L226 Difference]: Without dead ends: 247 [2018-10-01 01:05:31,730 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:05:31,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-10-01 01:05:31,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2018-10-01 01:05:31,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-10-01 01:05:31,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 249 transitions. [2018-10-01 01:05:31,734 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 249 transitions. Word has length 242 [2018-10-01 01:05:31,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:31,734 INFO L480 AbstractCegarLoop]: Abstraction has 247 states and 249 transitions. [2018-10-01 01:05:31,734 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-10-01 01:05:31,734 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 249 transitions. [2018-10-01 01:05:31,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2018-10-01 01:05:31,735 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:31,735 INFO L375 BasicCegarLoop]: trace histogram [81, 81, 80, 1, 1, 1] [2018-10-01 01:05:31,735 INFO L423 AbstractCegarLoop]: === Iteration 134 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:31,735 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:31,735 INFO L82 PathProgramCache]: Analyzing trace with hash -8978039, now seen corresponding path program 80 times [2018-10-01 01:05:31,735 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:31,735 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:31,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:31,736 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:31,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:31,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:32,229 INFO L134 CoverageAnalysis]: Checked inductivity of 9801 backedges. 81 proven. 9720 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:32,229 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:32,229 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:05:32,236 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:05:32,310 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:05:32,310 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:05:32,313 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:32,726 INFO L134 CoverageAnalysis]: Checked inductivity of 9801 backedges. 81 proven. 9720 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:32,746 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:32,746 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 82 [2018-10-01 01:05:32,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-10-01 01:05:32,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-10-01 01:05:32,747 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:32,747 INFO L87 Difference]: Start difference. First operand 247 states and 249 transitions. Second operand 83 states. [2018-10-01 01:05:33,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:33,245 INFO L93 Difference]: Finished difference Result 252 states and 257 transitions. [2018-10-01 01:05:33,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-10-01 01:05:33,245 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 245 [2018-10-01 01:05:33,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:33,246 INFO L225 Difference]: With dead ends: 252 [2018-10-01 01:05:33,246 INFO L226 Difference]: Without dead ends: 248 [2018-10-01 01:05:33,246 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:05:33,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-10-01 01:05:33,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2018-10-01 01:05:33,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2018-10-01 01:05:33,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 250 transitions. [2018-10-01 01:05:33,250 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 250 transitions. Word has length 245 [2018-10-01 01:05:33,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:33,250 INFO L480 AbstractCegarLoop]: Abstraction has 248 states and 250 transitions. [2018-10-01 01:05:33,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-10-01 01:05:33,250 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 250 transitions. [2018-10-01 01:05:33,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2018-10-01 01:05:33,251 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:33,251 INFO L375 BasicCegarLoop]: trace histogram [81, 81, 81, 1, 1] [2018-10-01 01:05:33,251 INFO L423 AbstractCegarLoop]: === Iteration 135 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:33,251 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:33,251 INFO L82 PathProgramCache]: Analyzing trace with hash -8977977, now seen corresponding path program 53 times [2018-10-01 01:05:33,251 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:33,251 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:33,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:33,252 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:33,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:33,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:33,741 INFO L134 CoverageAnalysis]: Checked inductivity of 9801 backedges. 0 proven. 9801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:33,742 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:33,742 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:05:33,748 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:05:33,913 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 82 check-sat command(s) [2018-10-01 01:05:33,913 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:05:33,918 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:34,348 INFO L134 CoverageAnalysis]: Checked inductivity of 9801 backedges. 0 proven. 9801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:34,368 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:34,368 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 82 [2018-10-01 01:05:34,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-10-01 01:05:34,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-10-01 01:05:34,370 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:34,370 INFO L87 Difference]: Start difference. First operand 248 states and 250 transitions. Second operand 84 states. [2018-10-01 01:05:34,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:34,968 INFO L93 Difference]: Finished difference Result 254 states and 260 transitions. [2018-10-01 01:05:34,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-10-01 01:05:34,968 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 245 [2018-10-01 01:05:34,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:34,969 INFO L225 Difference]: With dead ends: 254 [2018-10-01 01:05:34,969 INFO L226 Difference]: Without dead ends: 250 [2018-10-01 01:05:34,969 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:05:34,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2018-10-01 01:05:34,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2018-10-01 01:05:34,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2018-10-01 01:05:34,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 252 transitions. [2018-10-01 01:05:34,973 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 252 transitions. Word has length 245 [2018-10-01 01:05:34,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:34,973 INFO L480 AbstractCegarLoop]: Abstraction has 250 states and 252 transitions. [2018-10-01 01:05:34,973 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-10-01 01:05:34,973 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 252 transitions. [2018-10-01 01:05:34,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-10-01 01:05:34,974 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:34,974 INFO L375 BasicCegarLoop]: trace histogram [82, 82, 81, 1, 1, 1] [2018-10-01 01:05:34,974 INFO L423 AbstractCegarLoop]: === Iteration 136 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:34,974 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:34,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1175348459, now seen corresponding path program 81 times [2018-10-01 01:05:34,974 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:34,975 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:34,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:34,975 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:34,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:35,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:35,622 INFO L134 CoverageAnalysis]: Checked inductivity of 10045 backedges. 82 proven. 9963 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:35,622 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:35,622 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:05:35,630 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:05:35,811 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 83 check-sat command(s) [2018-10-01 01:05:35,811 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:05:35,815 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:36,846 INFO L134 CoverageAnalysis]: Checked inductivity of 10045 backedges. 0 proven. 10045 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:36,867 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:36,867 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 166 [2018-10-01 01:05:36,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 167 states [2018-10-01 01:05:36,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 167 interpolants. [2018-10-01 01:05:36,869 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:36,869 INFO L87 Difference]: Start difference. First operand 250 states and 252 transitions. Second operand 167 states. [2018-10-01 01:05:42,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:42,492 INFO L93 Difference]: Finished difference Result 257 states and 264 transitions. [2018-10-01 01:05:42,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2018-10-01 01:05:42,492 INFO L78 Accepts]: Start accepts. Automaton has 167 states. Word has length 248 [2018-10-01 01:05:42,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:42,493 INFO L225 Difference]: With dead ends: 257 [2018-10-01 01:05:42,493 INFO L226 Difference]: Without dead ends: 253 [2018-10-01 01:05:42,493 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 329 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.0s Time [2018-10-01 01:05:42,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-10-01 01:05:42,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2018-10-01 01:05:42,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-10-01 01:05:42,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 255 transitions. [2018-10-01 01:05:42,496 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 255 transitions. Word has length 248 [2018-10-01 01:05:42,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:42,497 INFO L480 AbstractCegarLoop]: Abstraction has 253 states and 255 transitions. [2018-10-01 01:05:42,497 INFO L481 AbstractCegarLoop]: Interpolant automaton has 167 states. [2018-10-01 01:05:42,497 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 255 transitions. [2018-10-01 01:05:42,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-10-01 01:05:42,497 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:42,497 INFO L375 BasicCegarLoop]: trace histogram [83, 83, 82, 1, 1, 1] [2018-10-01 01:05:42,498 INFO L423 AbstractCegarLoop]: === Iteration 137 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:42,498 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:42,498 INFO L82 PathProgramCache]: Analyzing trace with hash 2063861257, now seen corresponding path program 82 times [2018-10-01 01:05:42,498 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:42,498 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:42,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:42,498 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:42,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:42,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:43,020 INFO L134 CoverageAnalysis]: Checked inductivity of 10292 backedges. 83 proven. 10209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:43,020 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:43,020 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:05:43,028 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:05:43,101 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:05:43,101 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:05:43,104 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:43,520 INFO L134 CoverageAnalysis]: Checked inductivity of 10292 backedges. 83 proven. 10209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:43,541 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:43,541 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 84 [2018-10-01 01:05:43,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-10-01 01:05:43,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-10-01 01:05:43,542 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:43,542 INFO L87 Difference]: Start difference. First operand 253 states and 255 transitions. Second operand 85 states. [2018-10-01 01:05:44,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:44,328 INFO L93 Difference]: Finished difference Result 258 states and 263 transitions. [2018-10-01 01:05:44,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-10-01 01:05:44,329 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 251 [2018-10-01 01:05:44,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:44,330 INFO L225 Difference]: With dead ends: 258 [2018-10-01 01:05:44,330 INFO L226 Difference]: Without dead ends: 254 [2018-10-01 01:05:44,330 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:05:44,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2018-10-01 01:05:44,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2018-10-01 01:05:44,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2018-10-01 01:05:44,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 256 transitions. [2018-10-01 01:05:44,334 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 256 transitions. Word has length 251 [2018-10-01 01:05:44,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:44,334 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 256 transitions. [2018-10-01 01:05:44,334 INFO L481 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-10-01 01:05:44,334 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 256 transitions. [2018-10-01 01:05:44,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-10-01 01:05:44,335 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:44,335 INFO L375 BasicCegarLoop]: trace histogram [83, 83, 83, 1, 1] [2018-10-01 01:05:44,335 INFO L423 AbstractCegarLoop]: === Iteration 138 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:44,335 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:44,335 INFO L82 PathProgramCache]: Analyzing trace with hash 2063861319, now seen corresponding path program 54 times [2018-10-01 01:05:44,335 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:44,335 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:44,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:44,336 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:44,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:44,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:44,875 INFO L134 CoverageAnalysis]: Checked inductivity of 10292 backedges. 0 proven. 10292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:44,875 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:44,875 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:05:44,883 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:05:45,056 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 84 check-sat command(s) [2018-10-01 01:05:45,056 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:05:45,061 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:45,674 INFO L134 CoverageAnalysis]: Checked inductivity of 10292 backedges. 0 proven. 10292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:45,694 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:45,694 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 84 [2018-10-01 01:05:45,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-10-01 01:05:45,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-10-01 01:05:45,695 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:45,695 INFO L87 Difference]: Start difference. First operand 254 states and 256 transitions. Second operand 86 states. [2018-10-01 01:05:46,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:46,182 INFO L93 Difference]: Finished difference Result 260 states and 266 transitions. [2018-10-01 01:05:46,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-10-01 01:05:46,183 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 251 [2018-10-01 01:05:46,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:46,184 INFO L225 Difference]: With dead ends: 260 [2018-10-01 01:05:46,184 INFO L226 Difference]: Without dead ends: 256 [2018-10-01 01:05:46,184 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 01:05:46,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2018-10-01 01:05:46,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2018-10-01 01:05:46,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2018-10-01 01:05:46,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 258 transitions. [2018-10-01 01:05:46,189 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 258 transitions. Word has length 251 [2018-10-01 01:05:46,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:46,190 INFO L480 AbstractCegarLoop]: Abstraction has 256 states and 258 transitions. [2018-10-01 01:05:46,190 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-10-01 01:05:46,190 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 258 transitions. [2018-10-01 01:05:46,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-10-01 01:05:46,190 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:46,190 INFO L375 BasicCegarLoop]: trace histogram [84, 84, 83, 1, 1, 1] [2018-10-01 01:05:46,191 INFO L423 AbstractCegarLoop]: === Iteration 139 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:46,191 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:46,191 INFO L82 PathProgramCache]: Analyzing trace with hash 2035304085, now seen corresponding path program 83 times [2018-10-01 01:05:46,191 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:46,191 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:46,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:46,191 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:46,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:46,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:46,707 INFO L134 CoverageAnalysis]: Checked inductivity of 10542 backedges. 84 proven. 10458 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:46,707 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:46,707 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:05:46,715 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:05:46,887 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 85 check-sat command(s) [2018-10-01 01:05:46,887 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:05:46,891 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:47,334 INFO L134 CoverageAnalysis]: Checked inductivity of 10542 backedges. 84 proven. 10458 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:47,354 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:47,354 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2018-10-01 01:05:47,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-10-01 01:05:47,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-10-01 01:05:47,356 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:47,356 INFO L87 Difference]: Start difference. First operand 256 states and 258 transitions. Second operand 86 states. [2018-10-01 01:05:48,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:48,130 INFO L93 Difference]: Finished difference Result 261 states and 266 transitions. [2018-10-01 01:05:48,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-10-01 01:05:48,130 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 254 [2018-10-01 01:05:48,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:48,131 INFO L225 Difference]: With dead ends: 261 [2018-10-01 01:05:48,131 INFO L226 Difference]: Without dead ends: 257 [2018-10-01 01:05:48,131 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:05:48,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2018-10-01 01:05:48,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2018-10-01 01:05:48,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2018-10-01 01:05:48,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 259 transitions. [2018-10-01 01:05:48,136 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 259 transitions. Word has length 254 [2018-10-01 01:05:48,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:48,137 INFO L480 AbstractCegarLoop]: Abstraction has 257 states and 259 transitions. [2018-10-01 01:05:48,137 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-10-01 01:05:48,137 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 259 transitions. [2018-10-01 01:05:48,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-10-01 01:05:48,138 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:48,138 INFO L375 BasicCegarLoop]: trace histogram [84, 84, 84, 1, 1] [2018-10-01 01:05:48,138 INFO L423 AbstractCegarLoop]: === Iteration 140 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:48,138 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:48,138 INFO L82 PathProgramCache]: Analyzing trace with hash 2035304147, now seen corresponding path program 55 times [2018-10-01 01:05:48,138 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:48,139 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:48,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:48,139 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:48,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:48,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:48,791 INFO L134 CoverageAnalysis]: Checked inductivity of 10542 backedges. 0 proven. 10542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:48,791 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:48,791 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:05:48,799 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:05:48,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:48,877 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:49,303 INFO L134 CoverageAnalysis]: Checked inductivity of 10542 backedges. 0 proven. 10542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:49,324 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:49,324 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2018-10-01 01:05:49,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-10-01 01:05:49,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-10-01 01:05:49,325 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:49,325 INFO L87 Difference]: Start difference. First operand 257 states and 259 transitions. Second operand 87 states. [2018-10-01 01:05:49,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:49,922 INFO L93 Difference]: Finished difference Result 263 states and 269 transitions. [2018-10-01 01:05:49,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-10-01 01:05:49,923 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 254 [2018-10-01 01:05:49,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:49,924 INFO L225 Difference]: With dead ends: 263 [2018-10-01 01:05:49,924 INFO L226 Difference]: Without dead ends: 259 [2018-10-01 01:05:49,924 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:05:49,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-10-01 01:05:49,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2018-10-01 01:05:49,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-10-01 01:05:49,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 261 transitions. [2018-10-01 01:05:49,927 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 261 transitions. Word has length 254 [2018-10-01 01:05:49,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:49,927 INFO L480 AbstractCegarLoop]: Abstraction has 259 states and 261 transitions. [2018-10-01 01:05:49,928 INFO L481 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-10-01 01:05:49,928 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 261 transitions. [2018-10-01 01:05:49,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-10-01 01:05:49,928 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:49,928 INFO L375 BasicCegarLoop]: trace histogram [85, 85, 84, 1, 1, 1] [2018-10-01 01:05:49,929 INFO L423 AbstractCegarLoop]: === Iteration 141 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:49,929 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:49,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1692117641, now seen corresponding path program 84 times [2018-10-01 01:05:49,929 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:49,929 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:49,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:49,929 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:05:49,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:49,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:50,557 INFO L134 CoverageAnalysis]: Checked inductivity of 10795 backedges. 85 proven. 10710 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:50,557 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:50,557 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:05:50,565 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:05:50,756 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 86 check-sat command(s) [2018-10-01 01:05:50,756 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:05:50,760 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:51,827 INFO L134 CoverageAnalysis]: Checked inductivity of 10795 backedges. 0 proven. 10795 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:51,847 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:51,847 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 172 [2018-10-01 01:05:51,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 173 states [2018-10-01 01:05:51,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 173 interpolants. [2018-10-01 01:05:51,849 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:51,850 INFO L87 Difference]: Start difference. First operand 259 states and 261 transitions. Second operand 173 states. [2018-10-01 01:05:57,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:57,759 INFO L93 Difference]: Finished difference Result 266 states and 273 transitions. [2018-10-01 01:05:57,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2018-10-01 01:05:57,759 INFO L78 Accepts]: Start accepts. Automaton has 173 states. Word has length 257 [2018-10-01 01:05:57,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:57,759 INFO L225 Difference]: With dead ends: 266 [2018-10-01 01:05:57,760 INFO L226 Difference]: Without dead ends: 262 [2018-10-01 01:05:57,760 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 341 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.4s Time [2018-10-01 01:05:57,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2018-10-01 01:05:57,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2018-10-01 01:05:57,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2018-10-01 01:05:57,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 264 transitions. [2018-10-01 01:05:57,763 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 264 transitions. Word has length 257 [2018-10-01 01:05:57,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:57,763 INFO L480 AbstractCegarLoop]: Abstraction has 262 states and 264 transitions. [2018-10-01 01:05:57,764 INFO L481 AbstractCegarLoop]: Interpolant automaton has 173 states. [2018-10-01 01:05:57,764 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 264 transitions. [2018-10-01 01:05:57,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-10-01 01:05:57,764 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:57,764 INFO L375 BasicCegarLoop]: trace histogram [86, 86, 85, 1, 1, 1] [2018-10-01 01:05:57,765 INFO L423 AbstractCegarLoop]: === Iteration 142 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:57,765 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:57,765 INFO L82 PathProgramCache]: Analyzing trace with hash -153071083, now seen corresponding path program 85 times [2018-10-01 01:05:57,765 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:57,765 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:57,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:57,765 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:57,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:57,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:58,330 INFO L134 CoverageAnalysis]: Checked inductivity of 11051 backedges. 86 proven. 10965 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:58,330 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:58,330 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:05:58,338 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:05:58,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:58,419 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:58,874 INFO L134 CoverageAnalysis]: Checked inductivity of 11051 backedges. 86 proven. 10965 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:58,894 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:58,894 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2018-10-01 01:05:58,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-01 01:05:58,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-01 01:05:58,895 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:58,895 INFO L87 Difference]: Start difference. First operand 262 states and 264 transitions. Second operand 88 states. [2018-10-01 01:05:59,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:59,686 INFO L93 Difference]: Finished difference Result 267 states and 272 transitions. [2018-10-01 01:05:59,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-10-01 01:05:59,686 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 260 [2018-10-01 01:05:59,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:59,687 INFO L225 Difference]: With dead ends: 267 [2018-10-01 01:05:59,687 INFO L226 Difference]: Without dead ends: 263 [2018-10-01 01:05:59,687 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:05:59,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-10-01 01:05:59,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2018-10-01 01:05:59,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2018-10-01 01:05:59,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 265 transitions. [2018-10-01 01:05:59,691 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 265 transitions. Word has length 260 [2018-10-01 01:05:59,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:59,691 INFO L480 AbstractCegarLoop]: Abstraction has 263 states and 265 transitions. [2018-10-01 01:05:59,691 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-10-01 01:05:59,691 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 265 transitions. [2018-10-01 01:05:59,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-10-01 01:05:59,692 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:59,692 INFO L375 BasicCegarLoop]: trace histogram [86, 86, 86, 1, 1] [2018-10-01 01:05:59,692 INFO L423 AbstractCegarLoop]: === Iteration 143 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:59,692 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:59,692 INFO L82 PathProgramCache]: Analyzing trace with hash -153071021, now seen corresponding path program 56 times [2018-10-01 01:05:59,692 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:59,693 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:59,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:59,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:05:59,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:59,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:00,288 INFO L134 CoverageAnalysis]: Checked inductivity of 11051 backedges. 0 proven. 11051 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:00,288 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:06:00,288 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:06:00,296 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:06:00,378 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:06:00,378 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:06:00,381 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:06:01,063 INFO L134 CoverageAnalysis]: Checked inductivity of 11051 backedges. 0 proven. 11051 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:01,083 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:06:01,084 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2018-10-01 01:06:01,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-10-01 01:06:01,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-10-01 01:06:01,085 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:06:01,085 INFO L87 Difference]: Start difference. First operand 263 states and 265 transitions. Second operand 89 states. [2018-10-01 01:06:01,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:06:01,947 INFO L93 Difference]: Finished difference Result 269 states and 275 transitions. [2018-10-01 01:06:01,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-01 01:06:01,948 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 260 [2018-10-01 01:06:01,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:06:01,948 INFO L225 Difference]: With dead ends: 269 [2018-10-01 01:06:01,949 INFO L226 Difference]: Without dead ends: 265 [2018-10-01 01:06:01,949 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:06:01,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2018-10-01 01:06:01,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2018-10-01 01:06:01,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2018-10-01 01:06:01,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 267 transitions. [2018-10-01 01:06:01,952 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 267 transitions. Word has length 260 [2018-10-01 01:06:01,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:06:01,952 INFO L480 AbstractCegarLoop]: Abstraction has 265 states and 267 transitions. [2018-10-01 01:06:01,953 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-10-01 01:06:01,953 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 267 transitions. [2018-10-01 01:06:01,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-10-01 01:06:01,953 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:06:01,953 INFO L375 BasicCegarLoop]: trace histogram [87, 87, 86, 1, 1, 1] [2018-10-01 01:06:01,953 INFO L423 AbstractCegarLoop]: === Iteration 144 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:06:01,954 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:06:01,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1116073737, now seen corresponding path program 86 times [2018-10-01 01:06:01,954 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:06:01,954 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:06:01,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:01,954 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:06:01,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:01,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:02,522 INFO L134 CoverageAnalysis]: Checked inductivity of 11310 backedges. 87 proven. 11223 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:02,522 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:06:02,522 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:06:02,530 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:06:02,606 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:06:02,607 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:06:02,610 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:06:03,053 INFO L134 CoverageAnalysis]: Checked inductivity of 11310 backedges. 87 proven. 11223 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:03,073 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:06:03,074 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 88 [2018-10-01 01:06:03,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-10-01 01:06:03,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-10-01 01:06:03,075 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:06:03,075 INFO L87 Difference]: Start difference. First operand 265 states and 267 transitions. Second operand 89 states. [2018-10-01 01:06:03,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:06:03,880 INFO L93 Difference]: Finished difference Result 270 states and 275 transitions. [2018-10-01 01:06:03,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-01 01:06:03,881 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 263 [2018-10-01 01:06:03,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:06:03,881 INFO L225 Difference]: With dead ends: 270 [2018-10-01 01:06:03,881 INFO L226 Difference]: Without dead ends: 266 [2018-10-01 01:06:03,881 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:06:03,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2018-10-01 01:06:03,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2018-10-01 01:06:03,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2018-10-01 01:06:03,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 268 transitions. [2018-10-01 01:06:03,885 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 268 transitions. Word has length 263 [2018-10-01 01:06:03,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:06:03,886 INFO L480 AbstractCegarLoop]: Abstraction has 266 states and 268 transitions. [2018-10-01 01:06:03,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-10-01 01:06:03,886 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 268 transitions. [2018-10-01 01:06:03,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-10-01 01:06:03,886 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:06:03,886 INFO L375 BasicCegarLoop]: trace histogram [87, 87, 87, 1, 1] [2018-10-01 01:06:03,887 INFO L423 AbstractCegarLoop]: === Iteration 145 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:06:03,887 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:06:03,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1116073799, now seen corresponding path program 57 times [2018-10-01 01:06:03,887 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:06:03,887 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:06:03,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:03,887 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:06:03,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:03,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:04,437 INFO L134 CoverageAnalysis]: Checked inductivity of 11310 backedges. 0 proven. 11310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:04,438 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:06:04,438 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:06:04,444 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:06:04,648 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 88 check-sat command(s) [2018-10-01 01:06:04,648 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:06:04,652 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:06:05,092 INFO L134 CoverageAnalysis]: Checked inductivity of 11310 backedges. 0 proven. 11310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:05,112 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:06:05,112 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 88 [2018-10-01 01:06:05,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-10-01 01:06:05,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-10-01 01:06:05,113 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:06:05,113 INFO L87 Difference]: Start difference. First operand 266 states and 268 transitions. Second operand 90 states. [2018-10-01 01:06:05,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:06:05,819 INFO L93 Difference]: Finished difference Result 272 states and 278 transitions. [2018-10-01 01:06:05,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-10-01 01:06:05,819 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 263 [2018-10-01 01:06:05,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:06:05,820 INFO L225 Difference]: With dead ends: 272 [2018-10-01 01:06:05,820 INFO L226 Difference]: Without dead ends: 268 [2018-10-01 01:06:05,820 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:06:05,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2018-10-01 01:06:05,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2018-10-01 01:06:05,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2018-10-01 01:06:05,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 270 transitions. [2018-10-01 01:06:05,825 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 270 transitions. Word has length 263 [2018-10-01 01:06:05,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:06:05,826 INFO L480 AbstractCegarLoop]: Abstraction has 268 states and 270 transitions. [2018-10-01 01:06:05,826 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-10-01 01:06:05,826 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 270 transitions. [2018-10-01 01:06:05,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-10-01 01:06:05,827 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:06:05,827 INFO L375 BasicCegarLoop]: trace histogram [88, 88, 87, 1, 1, 1] [2018-10-01 01:06:05,827 INFO L423 AbstractCegarLoop]: === Iteration 146 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:06:05,827 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:06:05,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1612299669, now seen corresponding path program 87 times [2018-10-01 01:06:05,828 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:06:05,828 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:06:05,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:05,829 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:06:05,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:05,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:06,523 INFO L134 CoverageAnalysis]: Checked inductivity of 11572 backedges. 88 proven. 11484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:06,524 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:06:06,524 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:06:06,531 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:06:06,733 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 89 check-sat command(s) [2018-10-01 01:06:06,733 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:06:06,737 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:06:07,851 INFO L134 CoverageAnalysis]: Checked inductivity of 11572 backedges. 0 proven. 11572 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:07,871 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:06:07,871 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 178 [2018-10-01 01:06:07,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 179 states [2018-10-01 01:06:07,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 179 interpolants. [2018-10-01 01:06:07,873 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:06:07,874 INFO L87 Difference]: Start difference. First operand 268 states and 270 transitions. Second operand 179 states. [2018-10-01 01:06:14,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:06:14,314 INFO L93 Difference]: Finished difference Result 275 states and 282 transitions. [2018-10-01 01:06:14,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2018-10-01 01:06:14,314 INFO L78 Accepts]: Start accepts. Automaton has 179 states. Word has length 266 [2018-10-01 01:06:14,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:06:14,315 INFO L225 Difference]: With dead ends: 275 [2018-10-01 01:06:14,315 INFO L226 Difference]: Without dead ends: 271 [2018-10-01 01:06:14,315 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 353 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.7s Time [2018-10-01 01:06:14,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2018-10-01 01:06:14,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2018-10-01 01:06:14,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-10-01 01:06:14,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 273 transitions. [2018-10-01 01:06:14,319 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 273 transitions. Word has length 266 [2018-10-01 01:06:14,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:06:14,319 INFO L480 AbstractCegarLoop]: Abstraction has 271 states and 273 transitions. [2018-10-01 01:06:14,319 INFO L481 AbstractCegarLoop]: Interpolant automaton has 179 states. [2018-10-01 01:06:14,319 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 273 transitions. [2018-10-01 01:06:14,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2018-10-01 01:06:14,320 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:06:14,320 INFO L375 BasicCegarLoop]: trace histogram [89, 89, 88, 1, 1, 1] [2018-10-01 01:06:14,320 INFO L423 AbstractCegarLoop]: === Iteration 147 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:06:14,320 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:06:14,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1401607049, now seen corresponding path program 88 times [2018-10-01 01:06:14,320 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:06:14,320 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:06:14,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:14,321 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:06:14,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:14,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:14,887 INFO L134 CoverageAnalysis]: Checked inductivity of 11837 backedges. 89 proven. 11748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:14,888 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:06:14,888 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:06:14,894 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:06:14,972 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:06:14,972 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:06:14,975 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:06:16,481 INFO L134 CoverageAnalysis]: Checked inductivity of 11837 backedges. 0 proven. 11837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:16,501 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:06:16,501 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 180 [2018-10-01 01:06:16,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 181 states [2018-10-01 01:06:16,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 181 interpolants. [2018-10-01 01:06:16,503 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:06:16,503 INFO L87 Difference]: Start difference. First operand 271 states and 273 transitions. Second operand 181 states. [2018-10-01 01:06:22,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:06:22,930 INFO L93 Difference]: Finished difference Result 278 states and 285 transitions. [2018-10-01 01:06:22,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2018-10-01 01:06:22,931 INFO L78 Accepts]: Start accepts. Automaton has 181 states. Word has length 269 [2018-10-01 01:06:22,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:06:22,931 INFO L225 Difference]: With dead ends: 278 [2018-10-01 01:06:22,931 INFO L226 Difference]: Without dead ends: 274 [2018-10-01 01:06:22,931 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 357 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.9s Time [2018-10-01 01:06:22,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2018-10-01 01:06:22,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2018-10-01 01:06:22,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2018-10-01 01:06:22,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 276 transitions. [2018-10-01 01:06:22,935 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 276 transitions. Word has length 269 [2018-10-01 01:06:22,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:06:22,935 INFO L480 AbstractCegarLoop]: Abstraction has 274 states and 276 transitions. [2018-10-01 01:06:22,935 INFO L481 AbstractCegarLoop]: Interpolant automaton has 181 states. [2018-10-01 01:06:22,935 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 276 transitions. [2018-10-01 01:06:22,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-10-01 01:06:22,936 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:06:22,936 INFO L375 BasicCegarLoop]: trace histogram [90, 90, 89, 1, 1, 1] [2018-10-01 01:06:22,937 INFO L423 AbstractCegarLoop]: === Iteration 148 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:06:22,937 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:06:22,937 INFO L82 PathProgramCache]: Analyzing trace with hash -395015915, now seen corresponding path program 89 times [2018-10-01 01:06:22,937 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:06:22,937 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:06:22,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:22,938 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:06:22,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:22,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:23,548 INFO L134 CoverageAnalysis]: Checked inductivity of 12105 backedges. 90 proven. 12015 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:23,548 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:06:23,548 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:06:23,555 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:06:23,749 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 91 check-sat command(s) [2018-10-01 01:06:23,749 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:06:23,753 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:06:24,230 INFO L134 CoverageAnalysis]: Checked inductivity of 12105 backedges. 90 proven. 12015 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:24,250 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:06:24,250 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2018-10-01 01:06:24,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-10-01 01:06:24,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-10-01 01:06:24,251 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:06:24,251 INFO L87 Difference]: Start difference. First operand 274 states and 276 transitions. Second operand 92 states. [2018-10-01 01:06:24,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:06:24,796 INFO L93 Difference]: Finished difference Result 279 states and 284 transitions. [2018-10-01 01:06:24,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-10-01 01:06:24,796 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 272 [2018-10-01 01:06:24,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:06:24,797 INFO L225 Difference]: With dead ends: 279 [2018-10-01 01:06:24,797 INFO L226 Difference]: Without dead ends: 275 [2018-10-01 01:06:24,797 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:06:24,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2018-10-01 01:06:24,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2018-10-01 01:06:24,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2018-10-01 01:06:24,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 277 transitions. [2018-10-01 01:06:24,801 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 277 transitions. Word has length 272 [2018-10-01 01:06:24,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:06:24,801 INFO L480 AbstractCegarLoop]: Abstraction has 275 states and 277 transitions. [2018-10-01 01:06:24,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-10-01 01:06:24,802 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 277 transitions. [2018-10-01 01:06:24,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-10-01 01:06:24,802 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:06:24,802 INFO L375 BasicCegarLoop]: trace histogram [90, 90, 90, 1, 1] [2018-10-01 01:06:24,802 INFO L423 AbstractCegarLoop]: === Iteration 149 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:06:24,803 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:06:24,803 INFO L82 PathProgramCache]: Analyzing trace with hash -395015853, now seen corresponding path program 58 times [2018-10-01 01:06:24,803 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:06:24,803 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:06:24,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:24,803 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:06:24,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:24,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:25,367 INFO L134 CoverageAnalysis]: Checked inductivity of 12105 backedges. 0 proven. 12105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:25,367 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:06:25,367 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:06:25,375 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:06:25,456 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:06:25,456 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:06:25,460 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:06:25,938 INFO L134 CoverageAnalysis]: Checked inductivity of 12105 backedges. 0 proven. 12105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:25,958 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:06:25,958 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2018-10-01 01:06:25,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-10-01 01:06:25,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-10-01 01:06:25,959 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:06:25,959 INFO L87 Difference]: Start difference. First operand 275 states and 277 transitions. Second operand 93 states. [2018-10-01 01:06:26,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:06:26,837 INFO L93 Difference]: Finished difference Result 281 states and 287 transitions. [2018-10-01 01:06:26,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-10-01 01:06:26,837 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 272 [2018-10-01 01:06:26,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:06:26,838 INFO L225 Difference]: With dead ends: 281 [2018-10-01 01:06:26,838 INFO L226 Difference]: Without dead ends: 277 [2018-10-01 01:06:26,838 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:06:26,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2018-10-01 01:06:26,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2018-10-01 01:06:26,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2018-10-01 01:06:26,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 279 transitions. [2018-10-01 01:06:26,842 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 279 transitions. Word has length 272 [2018-10-01 01:06:26,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:06:26,842 INFO L480 AbstractCegarLoop]: Abstraction has 277 states and 279 transitions. [2018-10-01 01:06:26,842 INFO L481 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-10-01 01:06:26,842 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 279 transitions. [2018-10-01 01:06:26,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2018-10-01 01:06:26,843 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:06:26,843 INFO L375 BasicCegarLoop]: trace histogram [91, 91, 90, 1, 1, 1] [2018-10-01 01:06:26,843 INFO L423 AbstractCegarLoop]: === Iteration 150 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:06:26,843 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:06:26,843 INFO L82 PathProgramCache]: Analyzing trace with hash 292706313, now seen corresponding path program 90 times [2018-10-01 01:06:26,843 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:06:26,844 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:06:26,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:26,844 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:06:26,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:26,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:27,428 INFO L134 CoverageAnalysis]: Checked inductivity of 12376 backedges. 91 proven. 12285 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:27,429 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:06:27,429 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:06:27,436 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:06:27,631 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 92 check-sat command(s) [2018-10-01 01:06:27,632 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:06:27,635 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:06:28,767 INFO L134 CoverageAnalysis]: Checked inductivity of 12376 backedges. 0 proven. 12376 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:28,787 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:06:28,787 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 184 [2018-10-01 01:06:28,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 185 states [2018-10-01 01:06:28,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 185 interpolants. [2018-10-01 01:06:28,789 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:06:28,789 INFO L87 Difference]: Start difference. First operand 277 states and 279 transitions. Second operand 185 states. [2018-10-01 01:06:35,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:06:35,128 INFO L93 Difference]: Finished difference Result 284 states and 291 transitions. [2018-10-01 01:06:35,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2018-10-01 01:06:35,129 INFO L78 Accepts]: Start accepts. Automaton has 185 states. Word has length 275 [2018-10-01 01:06:35,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:06:35,129 INFO L225 Difference]: With dead ends: 284 [2018-10-01 01:06:35,129 INFO L226 Difference]: Without dead ends: 280 [2018-10-01 01:06:35,129 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 548 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 365 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.5s Time [2018-10-01 01:06:35,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2018-10-01 01:06:35,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2018-10-01 01:06:35,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2018-10-01 01:06:35,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 282 transitions. [2018-10-01 01:06:35,133 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 282 transitions. Word has length 275 [2018-10-01 01:06:35,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:06:35,133 INFO L480 AbstractCegarLoop]: Abstraction has 280 states and 282 transitions. [2018-10-01 01:06:35,134 INFO L481 AbstractCegarLoop]: Interpolant automaton has 185 states. [2018-10-01 01:06:35,134 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 282 transitions. [2018-10-01 01:06:35,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-10-01 01:06:35,135 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:06:35,135 INFO L375 BasicCegarLoop]: trace histogram [92, 92, 91, 1, 1, 1] [2018-10-01 01:06:35,135 INFO L423 AbstractCegarLoop]: === Iteration 151 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:06:35,135 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:06:35,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1231598741, now seen corresponding path program 91 times [2018-10-01 01:06:35,135 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:06:35,135 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:06:35,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:35,136 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:06:35,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:35,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:35,731 INFO L134 CoverageAnalysis]: Checked inductivity of 12650 backedges. 92 proven. 12558 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:35,732 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:06:35,732 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:06:35,739 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:06:35,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:35,825 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:06:36,315 INFO L134 CoverageAnalysis]: Checked inductivity of 12650 backedges. 92 proven. 12558 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:36,335 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:06:36,335 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2018-10-01 01:06:36,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-10-01 01:06:36,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-10-01 01:06:36,336 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:06:36,336 INFO L87 Difference]: Start difference. First operand 280 states and 282 transitions. Second operand 94 states. [2018-10-01 01:06:37,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:06:37,346 INFO L93 Difference]: Finished difference Result 285 states and 290 transitions. [2018-10-01 01:06:37,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-01 01:06:37,347 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 278 [2018-10-01 01:06:37,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:06:37,348 INFO L225 Difference]: With dead ends: 285 [2018-10-01 01:06:37,348 INFO L226 Difference]: Without dead ends: 281 [2018-10-01 01:06:37,348 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:06:37,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2018-10-01 01:06:37,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2018-10-01 01:06:37,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2018-10-01 01:06:37,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 283 transitions. [2018-10-01 01:06:37,353 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 283 transitions. Word has length 278 [2018-10-01 01:06:37,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:06:37,354 INFO L480 AbstractCegarLoop]: Abstraction has 281 states and 283 transitions. [2018-10-01 01:06:37,354 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-10-01 01:06:37,354 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 283 transitions. [2018-10-01 01:06:37,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-10-01 01:06:37,355 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:06:37,355 INFO L375 BasicCegarLoop]: trace histogram [92, 92, 92, 1, 1] [2018-10-01 01:06:37,355 INFO L423 AbstractCegarLoop]: === Iteration 152 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:06:37,355 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:06:37,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1231598803, now seen corresponding path program 59 times [2018-10-01 01:06:37,356 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:06:37,356 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:06:37,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:37,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:06:37,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:37,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:38,047 INFO L134 CoverageAnalysis]: Checked inductivity of 12650 backedges. 0 proven. 12650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:38,047 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:06:38,047 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:06:38,054 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:06:38,247 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 93 check-sat command(s) [2018-10-01 01:06:38,247 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:06:38,251 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:06:38,736 INFO L134 CoverageAnalysis]: Checked inductivity of 12650 backedges. 0 proven. 12650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:38,756 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:06:38,756 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2018-10-01 01:06:38,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-10-01 01:06:38,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-10-01 01:06:38,757 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:06:38,757 INFO L87 Difference]: Start difference. First operand 281 states and 283 transitions. Second operand 95 states. [2018-10-01 01:06:39,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:06:39,726 INFO L93 Difference]: Finished difference Result 287 states and 293 transitions. [2018-10-01 01:06:39,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-10-01 01:06:39,727 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 278 [2018-10-01 01:06:39,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:06:39,727 INFO L225 Difference]: With dead ends: 287 [2018-10-01 01:06:39,727 INFO L226 Difference]: Without dead ends: 283 [2018-10-01 01:06:39,727 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 01:06:39,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-10-01 01:06:39,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2018-10-01 01:06:39,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2018-10-01 01:06:39,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 285 transitions. [2018-10-01 01:06:39,733 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 285 transitions. Word has length 278 [2018-10-01 01:06:39,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:06:39,733 INFO L480 AbstractCegarLoop]: Abstraction has 283 states and 285 transitions. [2018-10-01 01:06:39,733 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-10-01 01:06:39,733 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 285 transitions. [2018-10-01 01:06:39,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2018-10-01 01:06:39,734 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:06:39,734 INFO L375 BasicCegarLoop]: trace histogram [93, 93, 92, 1, 1, 1] [2018-10-01 01:06:39,734 INFO L423 AbstractCegarLoop]: === Iteration 153 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:06:39,734 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:06:39,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1346077559, now seen corresponding path program 92 times [2018-10-01 01:06:39,734 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:06:39,734 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:06:39,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:39,735 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:06:39,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:39,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:40,322 INFO L134 CoverageAnalysis]: Checked inductivity of 12927 backedges. 93 proven. 12834 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:40,322 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:06:40,322 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:06:40,329 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:06:40,412 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:06:40,412 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:06:40,415 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:06:40,891 INFO L134 CoverageAnalysis]: Checked inductivity of 12927 backedges. 93 proven. 12834 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:40,911 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:06:40,911 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 94 [2018-10-01 01:06:40,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-10-01 01:06:40,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-10-01 01:06:40,912 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:06:40,912 INFO L87 Difference]: Start difference. First operand 283 states and 285 transitions. Second operand 95 states. [2018-10-01 01:06:42,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:06:42,015 INFO L93 Difference]: Finished difference Result 288 states and 293 transitions. [2018-10-01 01:06:42,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-10-01 01:06:42,016 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 281 [2018-10-01 01:06:42,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:06:42,016 INFO L225 Difference]: With dead ends: 288 [2018-10-01 01:06:42,016 INFO L226 Difference]: Without dead ends: 284 [2018-10-01 01:06:42,016 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:06:42,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2018-10-01 01:06:42,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2018-10-01 01:06:42,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2018-10-01 01:06:42,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 286 transitions. [2018-10-01 01:06:42,022 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 286 transitions. Word has length 281 [2018-10-01 01:06:42,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:06:42,023 INFO L480 AbstractCegarLoop]: Abstraction has 284 states and 286 transitions. [2018-10-01 01:06:42,023 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-10-01 01:06:42,023 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 286 transitions. [2018-10-01 01:06:42,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2018-10-01 01:06:42,024 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:06:42,024 INFO L375 BasicCegarLoop]: trace histogram [93, 93, 93, 1, 1] [2018-10-01 01:06:42,024 INFO L423 AbstractCegarLoop]: === Iteration 154 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:06:42,024 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:06:42,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1346077497, now seen corresponding path program 60 times [2018-10-01 01:06:42,025 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:06:42,025 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:06:42,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:42,025 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:06:42,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:42,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:42,655 INFO L134 CoverageAnalysis]: Checked inductivity of 12927 backedges. 0 proven. 12927 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:42,656 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:06:42,656 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:06:42,664 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:06:42,864 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 94 check-sat command(s) [2018-10-01 01:06:42,864 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:06:42,868 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:06:43,345 INFO L134 CoverageAnalysis]: Checked inductivity of 12927 backedges. 0 proven. 12927 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:43,366 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:06:43,367 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 94 [2018-10-01 01:06:43,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-10-01 01:06:43,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-10-01 01:06:43,368 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:06:43,368 INFO L87 Difference]: Start difference. First operand 284 states and 286 transitions. Second operand 96 states. [2018-10-01 01:06:44,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:06:44,397 INFO L93 Difference]: Finished difference Result 290 states and 296 transitions. [2018-10-01 01:06:44,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-10-01 01:06:44,398 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 281 [2018-10-01 01:06:44,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:06:44,398 INFO L225 Difference]: With dead ends: 290 [2018-10-01 01:06:44,398 INFO L226 Difference]: Without dead ends: 286 [2018-10-01 01:06:44,399 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:06:44,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2018-10-01 01:06:44,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2018-10-01 01:06:44,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2018-10-01 01:06:44,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 288 transitions. [2018-10-01 01:06:44,402 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 288 transitions. Word has length 281 [2018-10-01 01:06:44,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:06:44,402 INFO L480 AbstractCegarLoop]: Abstraction has 286 states and 288 transitions. [2018-10-01 01:06:44,402 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-10-01 01:06:44,403 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 288 transitions. [2018-10-01 01:06:44,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-10-01 01:06:44,403 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:06:44,403 INFO L375 BasicCegarLoop]: trace histogram [94, 94, 93, 1, 1, 1] [2018-10-01 01:06:44,404 INFO L423 AbstractCegarLoop]: === Iteration 155 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:06:44,404 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:06:44,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1114521621, now seen corresponding path program 93 times [2018-10-01 01:06:44,404 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:06:44,404 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:06:44,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:44,404 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:06:44,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:44,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:45,017 INFO L134 CoverageAnalysis]: Checked inductivity of 13207 backedges. 94 proven. 13113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:45,017 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:06:45,017 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:06:45,025 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:06:45,240 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 95 check-sat command(s) [2018-10-01 01:06:45,240 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:06:45,243 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:06:45,725 INFO L134 CoverageAnalysis]: Checked inductivity of 13207 backedges. 94 proven. 13113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:45,745 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:06:45,746 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2018-10-01 01:06:45,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-10-01 01:06:45,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-10-01 01:06:45,747 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:06:45,747 INFO L87 Difference]: Start difference. First operand 286 states and 288 transitions. Second operand 96 states. [2018-10-01 01:06:46,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:06:46,419 INFO L93 Difference]: Finished difference Result 291 states and 296 transitions. [2018-10-01 01:06:46,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-10-01 01:06:46,419 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 284 [2018-10-01 01:06:46,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:06:46,420 INFO L225 Difference]: With dead ends: 291 [2018-10-01 01:06:46,420 INFO L226 Difference]: Without dead ends: 287 [2018-10-01 01:06:46,421 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:06:46,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2018-10-01 01:06:46,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2018-10-01 01:06:46,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2018-10-01 01:06:46,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 289 transitions. [2018-10-01 01:06:46,426 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 289 transitions. Word has length 284 [2018-10-01 01:06:46,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:06:46,426 INFO L480 AbstractCegarLoop]: Abstraction has 287 states and 289 transitions. [2018-10-01 01:06:46,426 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-10-01 01:06:46,426 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 289 transitions. [2018-10-01 01:06:46,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-10-01 01:06:46,427 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:06:46,427 INFO L375 BasicCegarLoop]: trace histogram [94, 94, 94, 1, 1] [2018-10-01 01:06:46,427 INFO L423 AbstractCegarLoop]: === Iteration 156 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:06:46,427 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:06:46,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1114521683, now seen corresponding path program 61 times [2018-10-01 01:06:46,428 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:06:46,428 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:06:46,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:46,428 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:06:46,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:46,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:47,278 INFO L134 CoverageAnalysis]: Checked inductivity of 13207 backedges. 0 proven. 13207 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:47,279 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:06:47,279 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:06:47,285 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:06:47,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:47,371 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:06:47,849 INFO L134 CoverageAnalysis]: Checked inductivity of 13207 backedges. 0 proven. 13207 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:47,869 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:06:47,870 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2018-10-01 01:06:47,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-10-01 01:06:47,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-10-01 01:06:47,871 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:06:47,871 INFO L87 Difference]: Start difference. First operand 287 states and 289 transitions. Second operand 97 states. [2018-10-01 01:06:48,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:06:48,638 INFO L93 Difference]: Finished difference Result 293 states and 299 transitions. [2018-10-01 01:06:48,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-10-01 01:06:48,638 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 284 [2018-10-01 01:06:48,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:06:48,639 INFO L225 Difference]: With dead ends: 293 [2018-10-01 01:06:48,639 INFO L226 Difference]: Without dead ends: 289 [2018-10-01 01:06:48,639 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 01:06:48,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2018-10-01 01:06:48,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2018-10-01 01:06:48,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2018-10-01 01:06:48,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 291 transitions. [2018-10-01 01:06:48,643 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 291 transitions. Word has length 284 [2018-10-01 01:06:48,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:06:48,643 INFO L480 AbstractCegarLoop]: Abstraction has 289 states and 291 transitions. [2018-10-01 01:06:48,643 INFO L481 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-10-01 01:06:48,643 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 291 transitions. [2018-10-01 01:06:48,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2018-10-01 01:06:48,644 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:06:48,644 INFO L375 BasicCegarLoop]: trace histogram [95, 95, 94, 1, 1, 1] [2018-10-01 01:06:48,644 INFO L423 AbstractCegarLoop]: === Iteration 157 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:06:48,644 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:06:48,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1677115127, now seen corresponding path program 94 times [2018-10-01 01:06:48,644 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:06:48,644 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:06:48,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:48,645 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:06:48,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:48,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:49,280 INFO L134 CoverageAnalysis]: Checked inductivity of 13490 backedges. 95 proven. 13395 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:49,280 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:06:49,280 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:06:49,287 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:06:49,367 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:06:49,367 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:06:49,370 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:06:50,578 INFO L134 CoverageAnalysis]: Checked inductivity of 13490 backedges. 0 proven. 13490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:50,597 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:06:50,598 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 192 [2018-10-01 01:06:50,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 193 states [2018-10-01 01:06:50,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2018-10-01 01:06:50,600 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:06:50,600 INFO L87 Difference]: Start difference. First operand 289 states and 291 transitions. Second operand 193 states. [2018-10-01 01:06:58,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:06:58,034 INFO L93 Difference]: Finished difference Result 296 states and 303 transitions. [2018-10-01 01:06:58,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2018-10-01 01:06:58,035 INFO L78 Accepts]: Start accepts. Automaton has 193 states. Word has length 287 [2018-10-01 01:06:58,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:06:58,035 INFO L225 Difference]: With dead ends: 296 [2018-10-01 01:06:58,035 INFO L226 Difference]: Without dead ends: 292 [2018-10-01 01:06:58,035 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 572 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 381 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.4s Time [2018-10-01 01:06:58,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2018-10-01 01:06:58,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2018-10-01 01:06:58,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2018-10-01 01:06:58,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 294 transitions. [2018-10-01 01:06:58,039 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 294 transitions. Word has length 287 [2018-10-01 01:06:58,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:06:58,039 INFO L480 AbstractCegarLoop]: Abstraction has 292 states and 294 transitions. [2018-10-01 01:06:58,039 INFO L481 AbstractCegarLoop]: Interpolant automaton has 193 states. [2018-10-01 01:06:58,039 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 294 transitions. [2018-10-01 01:06:58,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-10-01 01:06:58,040 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:06:58,040 INFO L375 BasicCegarLoop]: trace histogram [96, 96, 95, 1, 1, 1] [2018-10-01 01:06:58,040 INFO L423 AbstractCegarLoop]: === Iteration 158 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:06:58,040 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:06:58,041 INFO L82 PathProgramCache]: Analyzing trace with hash 419244949, now seen corresponding path program 95 times [2018-10-01 01:06:58,041 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:06:58,041 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:06:58,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:58,041 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:06:58,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:58,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:58,718 INFO L134 CoverageAnalysis]: Checked inductivity of 13776 backedges. 96 proven. 13680 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:58,718 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:06:58,718 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:06:58,726 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:06:58,950 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 97 check-sat command(s) [2018-10-01 01:06:58,951 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:06:58,955 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:06:59,467 INFO L134 CoverageAnalysis]: Checked inductivity of 13776 backedges. 96 proven. 13680 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:59,486 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:06:59,486 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2018-10-01 01:06:59,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-10-01 01:06:59,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-10-01 01:06:59,488 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:06:59,488 INFO L87 Difference]: Start difference. First operand 292 states and 294 transitions. Second operand 98 states. [2018-10-01 01:07:00,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:07:00,451 INFO L93 Difference]: Finished difference Result 297 states and 302 transitions. [2018-10-01 01:07:00,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-10-01 01:07:00,451 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 290 [2018-10-01 01:07:00,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:07:00,452 INFO L225 Difference]: With dead ends: 297 [2018-10-01 01:07:00,452 INFO L226 Difference]: Without dead ends: 293 [2018-10-01 01:07:00,452 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 01:07:00,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-10-01 01:07:00,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2018-10-01 01:07:00,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-10-01 01:07:00,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 295 transitions. [2018-10-01 01:07:00,456 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 295 transitions. Word has length 290 [2018-10-01 01:07:00,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:07:00,456 INFO L480 AbstractCegarLoop]: Abstraction has 293 states and 295 transitions. [2018-10-01 01:07:00,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-10-01 01:07:00,456 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 295 transitions. [2018-10-01 01:07:00,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-10-01 01:07:00,457 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:07:00,457 INFO L375 BasicCegarLoop]: trace histogram [96, 96, 96, 1, 1] [2018-10-01 01:07:00,458 INFO L423 AbstractCegarLoop]: === Iteration 159 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:07:00,458 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:07:00,458 INFO L82 PathProgramCache]: Analyzing trace with hash 419245011, now seen corresponding path program 62 times [2018-10-01 01:07:00,458 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:07:00,458 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:07:00,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:00,459 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:07:00,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:00,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:07:01,094 INFO L134 CoverageAnalysis]: Checked inductivity of 13776 backedges. 0 proven. 13776 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:07:01,094 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:07:01,094 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:07:01,101 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:07:01,186 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:07:01,186 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:07:01,190 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:07:01,709 INFO L134 CoverageAnalysis]: Checked inductivity of 13776 backedges. 0 proven. 13776 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:07:01,729 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:07:01,729 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2018-10-01 01:07:01,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-10-01 01:07:01,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-10-01 01:07:01,730 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:07:01,730 INFO L87 Difference]: Start difference. First operand 293 states and 295 transitions. Second operand 99 states. [2018-10-01 01:07:02,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:07:02,509 INFO L93 Difference]: Finished difference Result 299 states and 305 transitions. [2018-10-01 01:07:02,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-10-01 01:07:02,509 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 290 [2018-10-01 01:07:02,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:07:02,510 INFO L225 Difference]: With dead ends: 299 [2018-10-01 01:07:02,510 INFO L226 Difference]: Without dead ends: 295 [2018-10-01 01:07:02,510 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:07:02,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2018-10-01 01:07:02,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2018-10-01 01:07:02,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2018-10-01 01:07:02,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 297 transitions. [2018-10-01 01:07:02,515 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 297 transitions. Word has length 290 [2018-10-01 01:07:02,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:07:02,515 INFO L480 AbstractCegarLoop]: Abstraction has 295 states and 297 transitions. [2018-10-01 01:07:02,515 INFO L481 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-10-01 01:07:02,515 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 297 transitions. [2018-10-01 01:07:02,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-10-01 01:07:02,516 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:07:02,516 INFO L375 BasicCegarLoop]: trace histogram [97, 97, 96, 1, 1, 1] [2018-10-01 01:07:02,516 INFO L423 AbstractCegarLoop]: === Iteration 160 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:07:02,516 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:07:02,516 INFO L82 PathProgramCache]: Analyzing trace with hash -37182071, now seen corresponding path program 96 times [2018-10-01 01:07:02,516 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:07:02,516 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:07:02,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:02,517 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:07:02,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:02,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:07:03,146 INFO L134 CoverageAnalysis]: Checked inductivity of 14065 backedges. 97 proven. 13968 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:07:03,146 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:07:03,146 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:07:03,153 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:07:03,371 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 98 check-sat command(s) [2018-10-01 01:07:03,371 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:07:03,376 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:07:04,603 INFO L134 CoverageAnalysis]: Checked inductivity of 14065 backedges. 0 proven. 14065 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:07:04,624 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:07:04,624 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 196 [2018-10-01 01:07:04,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 197 states [2018-10-01 01:07:04,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2018-10-01 01:07:04,626 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:07:04,626 INFO L87 Difference]: Start difference. First operand 295 states and 297 transitions. Second operand 197 states. [2018-10-01 01:07:12,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:07:12,148 INFO L93 Difference]: Finished difference Result 302 states and 309 transitions. [2018-10-01 01:07:12,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2018-10-01 01:07:12,149 INFO L78 Accepts]: Start accepts. Automaton has 197 states. Word has length 293 [2018-10-01 01:07:12,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:07:12,149 INFO L225 Difference]: With dead ends: 302 [2018-10-01 01:07:12,149 INFO L226 Difference]: Without dead ends: 298 [2018-10-01 01:07:12,149 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 584 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 389 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.5s Time [2018-10-01 01:07:12,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2018-10-01 01:07:12,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2018-10-01 01:07:12,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2018-10-01 01:07:12,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 300 transitions. [2018-10-01 01:07:12,155 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 300 transitions. Word has length 293 [2018-10-01 01:07:12,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:07:12,155 INFO L480 AbstractCegarLoop]: Abstraction has 298 states and 300 transitions. [2018-10-01 01:07:12,155 INFO L481 AbstractCegarLoop]: Interpolant automaton has 197 states. [2018-10-01 01:07:12,155 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 300 transitions. [2018-10-01 01:07:12,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2018-10-01 01:07:12,156 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:07:12,156 INFO L375 BasicCegarLoop]: trace histogram [98, 98, 97, 1, 1, 1] [2018-10-01 01:07:12,157 INFO L423 AbstractCegarLoop]: === Iteration 161 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:07:12,157 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:07:12,157 INFO L82 PathProgramCache]: Analyzing trace with hash 411924245, now seen corresponding path program 97 times [2018-10-01 01:07:12,157 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:07:12,157 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:07:12,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:12,158 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:07:12,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:12,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:07:13,148 INFO L134 CoverageAnalysis]: Checked inductivity of 14357 backedges. 98 proven. 14259 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:07:13,149 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:07:13,149 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:07:13,157 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:07:13,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:07:13,245 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:07:13,749 INFO L134 CoverageAnalysis]: Checked inductivity of 14357 backedges. 98 proven. 14259 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:07:13,770 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:07:13,770 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2018-10-01 01:07:13,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-10-01 01:07:13,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-10-01 01:07:13,771 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:07:13,771 INFO L87 Difference]: Start difference. First operand 298 states and 300 transitions. Second operand 100 states. [2018-10-01 01:07:14,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:07:14,454 INFO L93 Difference]: Finished difference Result 303 states and 308 transitions. [2018-10-01 01:07:14,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-10-01 01:07:14,455 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 296 [2018-10-01 01:07:14,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:07:14,456 INFO L225 Difference]: With dead ends: 303 [2018-10-01 01:07:14,456 INFO L226 Difference]: Without dead ends: 299 [2018-10-01 01:07:14,456 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 01:07:14,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2018-10-01 01:07:14,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2018-10-01 01:07:14,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-10-01 01:07:14,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 301 transitions. [2018-10-01 01:07:14,460 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 301 transitions. Word has length 296 [2018-10-01 01:07:14,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:07:14,460 INFO L480 AbstractCegarLoop]: Abstraction has 299 states and 301 transitions. [2018-10-01 01:07:14,460 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-10-01 01:07:14,460 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 301 transitions. [2018-10-01 01:07:14,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2018-10-01 01:07:14,461 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:07:14,461 INFO L375 BasicCegarLoop]: trace histogram [98, 98, 98, 1, 1] [2018-10-01 01:07:14,461 INFO L423 AbstractCegarLoop]: === Iteration 162 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:07:14,461 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:07:14,461 INFO L82 PathProgramCache]: Analyzing trace with hash 411924307, now seen corresponding path program 63 times [2018-10-01 01:07:14,461 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:07:14,461 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:07:14,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:14,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:07:14,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:14,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:07:15,107 INFO L134 CoverageAnalysis]: Checked inductivity of 14357 backedges. 0 proven. 14357 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:07:15,107 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:07:15,108 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:07:15,114 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:07:15,354 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 99 check-sat command(s) [2018-10-01 01:07:15,355 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:07:15,358 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:07:15,859 INFO L134 CoverageAnalysis]: Checked inductivity of 14357 backedges. 0 proven. 14357 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:07:15,879 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:07:15,879 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2018-10-01 01:07:15,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-10-01 01:07:15,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-10-01 01:07:15,881 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:07:15,881 INFO L87 Difference]: Start difference. First operand 299 states and 301 transitions. Second operand 101 states. [2018-10-01 01:07:16,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:07:16,764 INFO L93 Difference]: Finished difference Result 305 states and 311 transitions. [2018-10-01 01:07:16,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-10-01 01:07:16,764 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 296 [2018-10-01 01:07:16,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:07:16,765 INFO L225 Difference]: With dead ends: 305 [2018-10-01 01:07:16,765 INFO L226 Difference]: Without dead ends: 301 [2018-10-01 01:07:16,765 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 01:07:16,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2018-10-01 01:07:16,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2018-10-01 01:07:16,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2018-10-01 01:07:16,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 303 transitions. [2018-10-01 01:07:16,769 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 303 transitions. Word has length 296 [2018-10-01 01:07:16,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:07:16,769 INFO L480 AbstractCegarLoop]: Abstraction has 301 states and 303 transitions. [2018-10-01 01:07:16,769 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-10-01 01:07:16,769 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 303 transitions. [2018-10-01 01:07:16,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2018-10-01 01:07:16,770 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:07:16,770 INFO L375 BasicCegarLoop]: trace histogram [99, 99, 98, 1, 1, 1] [2018-10-01 01:07:16,770 INFO L423 AbstractCegarLoop]: === Iteration 163 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:07:16,770 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:07:16,770 INFO L82 PathProgramCache]: Analyzing trace with hash 915057161, now seen corresponding path program 98 times [2018-10-01 01:07:16,770 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:07:16,770 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:07:16,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:16,771 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:07:16,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:16,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:07:17,438 INFO L134 CoverageAnalysis]: Checked inductivity of 14652 backedges. 99 proven. 14553 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:07:17,438 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:07:17,438 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:07:17,445 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:07:17,534 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:07:17,534 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:07:17,537 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:07:18,144 INFO L134 CoverageAnalysis]: Checked inductivity of 14652 backedges. 99 proven. 14553 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:07:18,164 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:07:18,165 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 100 [2018-10-01 01:07:18,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-10-01 01:07:18,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-10-01 01:07:18,166 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:07:18,166 INFO L87 Difference]: Start difference. First operand 301 states and 303 transitions. Second operand 101 states. [2018-10-01 01:07:18,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:07:18,847 INFO L93 Difference]: Finished difference Result 306 states and 311 transitions. [2018-10-01 01:07:18,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-10-01 01:07:18,848 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 299 [2018-10-01 01:07:18,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:07:18,849 INFO L225 Difference]: With dead ends: 306 [2018-10-01 01:07:18,849 INFO L226 Difference]: Without dead ends: 302 [2018-10-01 01:07:18,849 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:07:18,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2018-10-01 01:07:18,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 302. [2018-10-01 01:07:18,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2018-10-01 01:07:18,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 304 transitions. [2018-10-01 01:07:18,870 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 304 transitions. Word has length 299 [2018-10-01 01:07:18,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:07:18,870 INFO L480 AbstractCegarLoop]: Abstraction has 302 states and 304 transitions. [2018-10-01 01:07:18,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-10-01 01:07:18,871 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 304 transitions. [2018-10-01 01:07:18,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2018-10-01 01:07:18,871 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:07:18,871 INFO L375 BasicCegarLoop]: trace histogram [99, 99, 99, 1, 1] [2018-10-01 01:07:18,872 INFO L423 AbstractCegarLoop]: === Iteration 164 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:07:18,872 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:07:18,872 INFO L82 PathProgramCache]: Analyzing trace with hash 915057223, now seen corresponding path program 64 times [2018-10-01 01:07:18,872 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:07:18,872 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:07:18,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:18,872 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:07:18,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:18,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:07:19,530 INFO L134 CoverageAnalysis]: Checked inductivity of 14652 backedges. 0 proven. 14652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:07:19,531 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:07:19,531 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:07:19,539 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:07:19,626 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:07:19,626 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:07:19,630 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:07:20,140 INFO L134 CoverageAnalysis]: Checked inductivity of 14652 backedges. 0 proven. 14652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:07:20,160 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:07:20,160 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 100 [2018-10-01 01:07:20,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-10-01 01:07:20,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-10-01 01:07:20,161 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:07:20,161 INFO L87 Difference]: Start difference. First operand 302 states and 304 transitions. Second operand 102 states. [2018-10-01 01:07:21,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:07:21,224 INFO L93 Difference]: Finished difference Result 308 states and 314 transitions. [2018-10-01 01:07:21,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-10-01 01:07:21,224 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 299 [2018-10-01 01:07:21,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:07:21,224 INFO L225 Difference]: With dead ends: 308 [2018-10-01 01:07:21,224 INFO L226 Difference]: Without dead ends: 304 [2018-10-01 01:07:21,225 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 01:07:21,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2018-10-01 01:07:21,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2018-10-01 01:07:21,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2018-10-01 01:07:21,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 306 transitions. [2018-10-01 01:07:21,230 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 306 transitions. Word has length 299 [2018-10-01 01:07:21,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:07:21,230 INFO L480 AbstractCegarLoop]: Abstraction has 304 states and 306 transitions. [2018-10-01 01:07:21,231 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-10-01 01:07:21,231 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 306 transitions. [2018-10-01 01:07:21,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-10-01 01:07:21,232 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:07:21,232 INFO L375 BasicCegarLoop]: trace histogram [100, 100, 99, 1, 1, 1] [2018-10-01 01:07:21,232 INFO L423 AbstractCegarLoop]: === Iteration 165 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:07:21,232 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:07:21,232 INFO L82 PathProgramCache]: Analyzing trace with hash 311894677, now seen corresponding path program 99 times [2018-10-01 01:07:21,233 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:07:21,233 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:07:21,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:21,233 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:07:21,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:21,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:07:21,898 INFO L134 CoverageAnalysis]: Checked inductivity of 14950 backedges. 100 proven. 14850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:07:21,899 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:07:21,899 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:07:21,906 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:07:22,150 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 101 check-sat command(s) [2018-10-01 01:07:22,150 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:07:22,155 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:07:22,784 INFO L134 CoverageAnalysis]: Checked inductivity of 14950 backedges. 100 proven. 14850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:07:22,806 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:07:22,806 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2018-10-01 01:07:22,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-10-01 01:07:22,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-10-01 01:07:22,807 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:07:22,807 INFO L87 Difference]: Start difference. First operand 304 states and 306 transitions. Second operand 102 states. [2018-10-01 01:07:23,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:07:23,997 INFO L93 Difference]: Finished difference Result 309 states and 314 transitions. [2018-10-01 01:07:23,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-10-01 01:07:23,997 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 302 [2018-10-01 01:07:23,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:07:23,998 INFO L225 Difference]: With dead ends: 309 [2018-10-01 01:07:23,998 INFO L226 Difference]: Without dead ends: 305 [2018-10-01 01:07:23,998 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:07:23,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2018-10-01 01:07:24,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2018-10-01 01:07:24,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2018-10-01 01:07:24,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 307 transitions. [2018-10-01 01:07:24,003 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 307 transitions. Word has length 302 [2018-10-01 01:07:24,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:07:24,003 INFO L480 AbstractCegarLoop]: Abstraction has 305 states and 307 transitions. [2018-10-01 01:07:24,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-10-01 01:07:24,003 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 307 transitions. [2018-10-01 01:07:24,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-10-01 01:07:24,004 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:07:24,004 INFO L375 BasicCegarLoop]: trace histogram [100, 100, 100, 1, 1] [2018-10-01 01:07:24,004 INFO L423 AbstractCegarLoop]: === Iteration 166 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:07:24,005 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:07:24,005 INFO L82 PathProgramCache]: Analyzing trace with hash 311894739, now seen corresponding path program 65 times [2018-10-01 01:07:24,005 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:07:24,005 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:07:24,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:24,005 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:07:24,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:24,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:07:30,696 INFO L134 CoverageAnalysis]: Checked inductivity of 14950 backedges. 0 proven. 14950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:07:30,696 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:07:30,696 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:07:30,704 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:07:30,932 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 101 check-sat command(s) [2018-10-01 01:07:30,932 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:07:30,939 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:07:32,235 INFO L134 CoverageAnalysis]: Checked inductivity of 14950 backedges. 0 proven. 14950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:07:32,255 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:07:32,255 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2018-10-01 01:07:32,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-10-01 01:07:32,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-10-01 01:07:32,256 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:07:32,256 INFO L87 Difference]: Start difference. First operand 305 states and 307 transitions. Second operand 103 states. [2018-10-01 01:08:07,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:07,257 INFO L93 Difference]: Finished difference Result 312 states and 319 transitions. [2018-10-01 01:08:07,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-10-01 01:08:07,257 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 302 [2018-10-01 01:08:07,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:07,258 INFO L225 Difference]: With dead ends: 312 [2018-10-01 01:08:07,258 INFO L226 Difference]: Without dead ends: 308 [2018-10-01 01:08:07,258 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 299 SyntacticMatches, 2 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.4s Time [2018-10-01 01:08:07,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2018-10-01 01:08:07,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2018-10-01 01:08:07,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2018-10-01 01:08:07,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 311 transitions. [2018-10-01 01:08:07,263 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 311 transitions. Word has length 302 [2018-10-01 01:08:07,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:07,263 INFO L480 AbstractCegarLoop]: Abstraction has 308 states and 311 transitions. [2018-10-01 01:08:07,263 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-10-01 01:08:07,263 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 311 transitions. [2018-10-01 01:08:07,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-10-01 01:08:07,264 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:07,264 INFO L375 BasicCegarLoop]: trace histogram [101, 101, 100, 1, 1, 1] [2018-10-01 01:08:07,264 INFO L423 AbstractCegarLoop]: === Iteration 167 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:07,264 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:07,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1641498437, now seen corresponding path program 1 times [2018-10-01 01:08:07,264 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:07,264 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:07,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:07,265 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:07,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:07,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:08,385 INFO L134 CoverageAnalysis]: Checked inductivity of 15251 backedges. 201 proven. 15050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:08,385 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:08,385 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:08,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:08:08,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:08,486 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:09,403 INFO L134 CoverageAnalysis]: Checked inductivity of 15251 backedges. 201 proven. 15050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:09,424 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:09,424 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 102 [2018-10-01 01:08:09,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-10-01 01:08:09,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-10-01 01:08:09,425 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:09,426 INFO L87 Difference]: Start difference. First operand 308 states and 311 transitions. Second operand 103 states. [2018-10-01 01:08:10,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:10,557 INFO L93 Difference]: Finished difference Result 313 states and 318 transitions. [2018-10-01 01:08:10,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-10-01 01:08:10,557 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 305 [2018-10-01 01:08:10,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:10,558 INFO L225 Difference]: With dead ends: 313 [2018-10-01 01:08:10,558 INFO L226 Difference]: Without dead ends: 308 [2018-10-01 01:08:10,558 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 01:08:10,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2018-10-01 01:08:10,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2018-10-01 01:08:10,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2018-10-01 01:08:10,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 310 transitions. [2018-10-01 01:08:10,563 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 310 transitions. Word has length 305 [2018-10-01 01:08:10,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:10,563 INFO L480 AbstractCegarLoop]: Abstraction has 308 states and 310 transitions. [2018-10-01 01:08:10,563 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-10-01 01:08:10,563 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 310 transitions. [2018-10-01 01:08:10,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-10-01 01:08:10,564 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:10,564 INFO L375 BasicCegarLoop]: trace histogram [101, 101, 101, 1, 1] [2018-10-01 01:08:10,564 INFO L423 AbstractCegarLoop]: === Iteration 168 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:10,564 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:10,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1641500359, now seen corresponding path program 66 times [2018-10-01 01:08:10,564 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:10,564 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:10,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:10,565 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:08:10,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:10,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:11,662 INFO L134 CoverageAnalysis]: Checked inductivity of 15251 backedges. 15251 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:11,662 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-01 01:08:11,662 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [102] imperfect sequences [] total 102 [2018-10-01 01:08:11,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-10-01 01:08:11,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-10-01 01:08:11,664 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:11,664 INFO L87 Difference]: Start difference. First operand 308 states and 310 transitions. Second operand 104 states. [2018-10-01 01:08:14,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:14,195 INFO L93 Difference]: Finished difference Result 609 states and 910 transitions. [2018-10-01 01:08:14,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-10-01 01:08:14,195 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 305 [2018-10-01 01:08:14,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:14,200 INFO L225 Difference]: With dead ends: 609 [2018-10-01 01:08:14,200 INFO L226 Difference]: Without dead ends: 608 [2018-10-01 01:08:14,201 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:08:14,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2018-10-01 01:08:14,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 607. [2018-10-01 01:08:14,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 607 states. [2018-10-01 01:08:14,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 907 transitions. [2018-10-01 01:08:14,218 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 907 transitions. Word has length 305 [2018-10-01 01:08:14,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:14,218 INFO L480 AbstractCegarLoop]: Abstraction has 607 states and 907 transitions. [2018-10-01 01:08:14,218 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-10-01 01:08:14,218 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 907 transitions. [2018-10-01 01:08:14,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-10-01 01:08:14,220 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:14,220 INFO L375 BasicCegarLoop]: trace histogram [102, 101, 101, 1, 1, 1, 1] [2018-10-01 01:08:14,220 INFO L423 AbstractCegarLoop]: === Iteration 169 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:14,220 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:14,220 INFO L82 PathProgramCache]: Analyzing trace with hash -560847213, now seen corresponding path program 1 times [2018-10-01 01:08:14,220 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:14,220 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:14,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:14,221 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:14,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:14,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:15,420 INFO L134 CoverageAnalysis]: Checked inductivity of 15555 backedges. 203 proven. 15352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:15,420 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:15,420 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:15,428 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:08:15,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:15,521 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:16,119 INFO L134 CoverageAnalysis]: Checked inductivity of 15555 backedges. 203 proven. 15352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:16,140 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:16,140 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 103 [2018-10-01 01:08:16,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-10-01 01:08:16,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-10-01 01:08:16,141 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:16,141 INFO L87 Difference]: Start difference. First operand 607 states and 907 transitions. Second operand 104 states. [2018-10-01 01:08:17,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:17,114 INFO L93 Difference]: Finished difference Result 912 states and 1513 transitions. [2018-10-01 01:08:17,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-10-01 01:08:17,114 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 308 [2018-10-01 01:08:17,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:17,116 INFO L225 Difference]: With dead ends: 912 [2018-10-01 01:08:17,116 INFO L226 Difference]: Without dead ends: 609 [2018-10-01 01:08:17,117 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 01:08:17,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2018-10-01 01:08:17,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 609. [2018-10-01 01:08:17,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 609 states. [2018-10-01 01:08:17,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 909 transitions. [2018-10-01 01:08:17,130 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 909 transitions. Word has length 308 [2018-10-01 01:08:17,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:17,130 INFO L480 AbstractCegarLoop]: Abstraction has 609 states and 909 transitions. [2018-10-01 01:08:17,131 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-10-01 01:08:17,131 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 909 transitions. [2018-10-01 01:08:17,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2018-10-01 01:08:17,132 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:17,132 INFO L375 BasicCegarLoop]: trace histogram [103, 102, 101, 2, 1, 1, 1] [2018-10-01 01:08:17,132 INFO L423 AbstractCegarLoop]: === Iteration 170 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:17,132 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:17,133 INFO L82 PathProgramCache]: Analyzing trace with hash -719692667, now seen corresponding path program 2 times [2018-10-01 01:08:17,133 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:17,133 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:17,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:17,133 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:08:17,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:17,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:17,953 INFO L134 CoverageAnalysis]: Checked inductivity of 15862 backedges. 408 proven. 15453 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-01 01:08:17,953 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:17,953 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:17,959 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:08:18,050 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:08:18,050 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:18,054 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:18,589 INFO L134 CoverageAnalysis]: Checked inductivity of 15862 backedges. 408 proven. 15453 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-01 01:08:18,609 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:18,610 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 103 [2018-10-01 01:08:18,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-10-01 01:08:18,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-10-01 01:08:18,611 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:18,611 INFO L87 Difference]: Start difference. First operand 609 states and 909 transitions. Second operand 104 states. [2018-10-01 01:08:19,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:19,649 INFO L93 Difference]: Finished difference Result 913 states and 1514 transitions. [2018-10-01 01:08:19,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-10-01 01:08:19,654 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 311 [2018-10-01 01:08:19,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:19,656 INFO L225 Difference]: With dead ends: 913 [2018-10-01 01:08:19,656 INFO L226 Difference]: Without dead ends: 610 [2018-10-01 01:08:19,657 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:08:19,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2018-10-01 01:08:19,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 610. [2018-10-01 01:08:19,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 610 states. [2018-10-01 01:08:19,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 910 transitions. [2018-10-01 01:08:19,667 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 910 transitions. Word has length 311 [2018-10-01 01:08:19,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:19,667 INFO L480 AbstractCegarLoop]: Abstraction has 610 states and 910 transitions. [2018-10-01 01:08:19,667 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-10-01 01:08:19,667 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 910 transitions. [2018-10-01 01:08:19,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2018-10-01 01:08:19,668 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:19,668 INFO L375 BasicCegarLoop]: trace histogram [103, 102, 102, 1, 1, 1, 1] [2018-10-01 01:08:19,668 INFO L423 AbstractCegarLoop]: === Iteration 171 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:19,668 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:19,668 INFO L82 PathProgramCache]: Analyzing trace with hash -717845625, now seen corresponding path program 3 times [2018-10-01 01:08:19,668 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:19,668 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:19,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:19,669 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:19,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:19,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:20,923 INFO L134 CoverageAnalysis]: Checked inductivity of 15862 backedges. 205 proven. 15657 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:20,924 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:20,924 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:20,931 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:08:20,947 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-01 01:08:20,948 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:20,951 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:21,018 INFO L134 CoverageAnalysis]: Checked inductivity of 15862 backedges. 510 proven. 0 refuted. 0 times theorem prover too weak. 15352 trivial. 0 not checked. [2018-10-01 01:08:21,037 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-01 01:08:21,037 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [104] total 106 [2018-10-01 01:08:21,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-10-01 01:08:21,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-10-01 01:08:21,039 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:21,039 INFO L87 Difference]: Start difference. First operand 610 states and 910 transitions. Second operand 106 states. [2018-10-01 01:08:23,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:23,409 INFO L93 Difference]: Finished difference Result 920 states and 1525 transitions. [2018-10-01 01:08:23,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-10-01 01:08:23,410 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 311 [2018-10-01 01:08:23,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:23,410 INFO L225 Difference]: With dead ends: 920 [2018-10-01 01:08:23,411 INFO L226 Difference]: Without dead ends: 617 [2018-10-01 01:08:23,411 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:08:23,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2018-10-01 01:08:23,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 617. [2018-10-01 01:08:23,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2018-10-01 01:08:23,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 721 transitions. [2018-10-01 01:08:23,425 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 721 transitions. Word has length 311 [2018-10-01 01:08:23,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:23,425 INFO L480 AbstractCegarLoop]: Abstraction has 617 states and 721 transitions. [2018-10-01 01:08:23,425 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-10-01 01:08:23,425 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 721 transitions. [2018-10-01 01:08:23,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 612 [2018-10-01 01:08:23,429 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:23,429 INFO L375 BasicCegarLoop]: trace histogram [203, 202, 102, 101, 1, 1, 1] [2018-10-01 01:08:23,429 INFO L423 AbstractCegarLoop]: === Iteration 172 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:23,429 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:23,429 INFO L82 PathProgramCache]: Analyzing trace with hash -326427701, now seen corresponding path program 4 times [2018-10-01 01:08:23,430 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:23,430 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:23,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:23,430 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:23,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:23,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:24,622 INFO L134 CoverageAnalysis]: Checked inductivity of 61712 backedges. 31003 proven. 15759 refuted. 0 times theorem prover too weak. 14950 trivial. 0 not checked. [2018-10-01 01:08:24,622 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:24,622 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:24,636 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:08:24,826 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:08:24,826 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:24,833 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:25,575 INFO L134 CoverageAnalysis]: Checked inductivity of 61712 backedges. 31003 proven. 15759 refuted. 0 times theorem prover too weak. 14950 trivial. 0 not checked. [2018-10-01 01:08:25,604 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:25,605 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 104 [2018-10-01 01:08:25,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-10-01 01:08:25,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-10-01 01:08:25,607 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:25,607 INFO L87 Difference]: Start difference. First operand 617 states and 721 transitions. Second operand 105 states. [2018-10-01 01:08:27,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:27,075 INFO L93 Difference]: Finished difference Result 930 states and 1139 transitions. [2018-10-01 01:08:27,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-10-01 01:08:27,075 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 611 [2018-10-01 01:08:27,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:27,076 INFO L225 Difference]: With dead ends: 930 [2018-10-01 01:08:27,077 INFO L226 Difference]: Without dead ends: 620 [2018-10-01 01:08:27,077 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 714 GetRequests, 611 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 01:08:27,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2018-10-01 01:08:27,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 620. [2018-10-01 01:08:27,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 620 states. [2018-10-01 01:08:27,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 724 transitions. [2018-10-01 01:08:27,091 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 724 transitions. Word has length 611 [2018-10-01 01:08:27,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:27,091 INFO L480 AbstractCegarLoop]: Abstraction has 620 states and 724 transitions. [2018-10-01 01:08:27,091 INFO L481 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-10-01 01:08:27,091 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 724 transitions. [2018-10-01 01:08:27,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 612 [2018-10-01 01:08:27,094 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:27,095 INFO L375 BasicCegarLoop]: trace histogram [203, 202, 103, 100, 1, 1, 1] [2018-10-01 01:08:27,095 INFO L423 AbstractCegarLoop]: === Iteration 173 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:27,095 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:27,095 INFO L82 PathProgramCache]: Analyzing trace with hash 345405193, now seen corresponding path program 5 times [2018-10-01 01:08:27,095 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:27,095 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:27,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:27,096 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:27,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:27,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:28,699 INFO L134 CoverageAnalysis]: Checked inductivity of 61712 backedges. 30996 proven. 15965 refuted. 0 times theorem prover too weak. 14751 trivial. 0 not checked. [2018-10-01 01:08:28,699 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:28,699 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:28,707 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:08:28,832 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 56 check-sat command(s) [2018-10-01 01:08:28,833 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:28,837 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:30,607 INFO L134 CoverageAnalysis]: Checked inductivity of 61712 backedges. 38532 proven. 1785 refuted. 0 times theorem prover too weak. 21395 trivial. 0 not checked. [2018-10-01 01:08:30,626 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:30,627 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 38] total 142 [2018-10-01 01:08:30,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 142 states [2018-10-01 01:08:30,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2018-10-01 01:08:30,628 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:30,628 INFO L87 Difference]: Start difference. First operand 620 states and 724 transitions. Second operand 142 states. [2018-10-01 01:08:34,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:34,166 INFO L93 Difference]: Finished difference Result 1242 states and 1555 transitions. [2018-10-01 01:08:34,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-10-01 01:08:34,167 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 611 [2018-10-01 01:08:34,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:34,168 INFO L225 Difference]: With dead ends: 1242 [2018-10-01 01:08:34,169 INFO L226 Difference]: Without dead ends: 932 [2018-10-01 01:08:34,169 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 821 GetRequests, 575 SyntacticMatches, 0 SemanticMatches, 246 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6s Time [2018-10-01 01:08:34,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2018-10-01 01:08:34,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 926. [2018-10-01 01:08:34,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2018-10-01 01:08:34,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1032 transitions. [2018-10-01 01:08:34,190 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1032 transitions. Word has length 611 [2018-10-01 01:08:34,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:34,190 INFO L480 AbstractCegarLoop]: Abstraction has 926 states and 1032 transitions. [2018-10-01 01:08:34,190 INFO L481 AbstractCegarLoop]: Interpolant automaton has 142 states. [2018-10-01 01:08:34,190 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1032 transitions. [2018-10-01 01:08:34,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2018-10-01 01:08:34,194 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:34,194 INFO L375 BasicCegarLoop]: trace histogram [204, 203, 153, 51, 1, 1, 1] [2018-10-01 01:08:34,194 INFO L423 AbstractCegarLoop]: === Iteration 174 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:34,194 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:34,194 INFO L82 PathProgramCache]: Analyzing trace with hash -709363397, now seen corresponding path program 6 times [2018-10-01 01:08:34,194 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:34,195 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:34,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:34,195 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:34,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:34,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:35,391 INFO L134 CoverageAnalysis]: Checked inductivity of 62322 backedges. 31304 proven. 16068 refuted. 0 times theorem prover too weak. 14950 trivial. 0 not checked. [2018-10-01 01:08:35,391 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:35,391 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:35,398 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:08:35,442 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2018-10-01 01:08:35,443 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:35,445 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:35,684 INFO L134 CoverageAnalysis]: Checked inductivity of 62322 backedges. 2019 proven. 3 refuted. 0 times theorem prover too weak. 60300 trivial. 0 not checked. [2018-10-01 01:08:35,704 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:35,704 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 5] total 107 [2018-10-01 01:08:35,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-10-01 01:08:35,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-10-01 01:08:35,706 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:35,706 INFO L87 Difference]: Start difference. First operand 926 states and 1032 transitions. Second operand 107 states. [2018-10-01 01:08:42,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:42,255 INFO L93 Difference]: Finished difference Result 33168 states and 43988 transitions. [2018-10-01 01:08:42,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-10-01 01:08:42,255 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 614 [2018-10-01 01:08:42,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:42,304 INFO L225 Difference]: With dead ends: 33168 [2018-10-01 01:08:42,305 INFO L226 Difference]: Without dead ends: 32549 [2018-10-01 01:08:42,309 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 718 GetRequests, 613 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 01:08:42,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32549 states. [2018-10-01 01:08:42,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32549 to 32442. [2018-10-01 01:08:42,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32442 states. [2018-10-01 01:08:42,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32442 states to 32442 states and 32752 transitions. [2018-10-01 01:08:42,888 INFO L78 Accepts]: Start accepts. Automaton has 32442 states and 32752 transitions. Word has length 614 [2018-10-01 01:08:42,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:42,889 INFO L480 AbstractCegarLoop]: Abstraction has 32442 states and 32752 transitions. [2018-10-01 01:08:42,889 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-10-01 01:08:42,889 INFO L276 IsEmpty]: Start isEmpty. Operand 32442 states and 32752 transitions. [2018-10-01 01:08:42,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2018-10-01 01:08:42,913 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:42,914 INFO L375 BasicCegarLoop]: trace histogram [204, 203, 203, 1, 1, 1, 1] [2018-10-01 01:08:42,914 INFO L423 AbstractCegarLoop]: === Iteration 175 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:42,914 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:42,914 INFO L82 PathProgramCache]: Analyzing trace with hash 217122963, now seen corresponding path program 7 times [2018-10-01 01:08:42,914 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:42,914 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:42,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:42,915 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:42,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:42,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:43,921 INFO L134 CoverageAnalysis]: Checked inductivity of 62322 backedges. 31295 proven. 16276 refuted. 0 times theorem prover too weak. 14751 trivial. 0 not checked. [2018-10-01 01:08:43,922 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:43,922 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:43,929 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:08:44,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:44,115 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:45,037 INFO L134 CoverageAnalysis]: Checked inductivity of 62322 backedges. 31295 proven. 16276 refuted. 0 times theorem prover too weak. 14751 trivial. 0 not checked. [2018-10-01 01:08:45,057 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:45,057 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 106 [2018-10-01 01:08:45,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-10-01 01:08:45,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-10-01 01:08:45,059 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:45,059 INFO L87 Difference]: Start difference. First operand 32442 states and 32752 transitions. Second operand 107 states. [2018-10-01 01:08:46,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:46,873 INFO L93 Difference]: Finished difference Result 64589 states and 65210 transitions. [2018-10-01 01:08:46,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-10-01 01:08:46,874 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 614 [2018-10-01 01:08:46,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:46,900 INFO L225 Difference]: With dead ends: 64589 [2018-10-01 01:08:46,901 INFO L226 Difference]: Without dead ends: 32452 [2018-10-01 01:08:46,921 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 719 GetRequests, 614 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 01:08:46,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32452 states. [2018-10-01 01:08:47,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32452 to 32445. [2018-10-01 01:08:47,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32445 states. [2018-10-01 01:08:47,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32445 states to 32445 states and 32755 transitions. [2018-10-01 01:08:47,440 INFO L78 Accepts]: Start accepts. Automaton has 32445 states and 32755 transitions. Word has length 614 [2018-10-01 01:08:47,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:47,440 INFO L480 AbstractCegarLoop]: Abstraction has 32445 states and 32755 transitions. [2018-10-01 01:08:47,440 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-10-01 01:08:47,440 INFO L276 IsEmpty]: Start isEmpty. Operand 32445 states and 32755 transitions. [2018-10-01 01:08:47,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 618 [2018-10-01 01:08:47,468 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:47,468 INFO L375 BasicCegarLoop]: trace histogram [205, 204, 204, 1, 1, 1, 1] [2018-10-01 01:08:47,468 INFO L423 AbstractCegarLoop]: === Iteration 176 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:47,468 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:47,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1985377589, now seen corresponding path program 8 times [2018-10-01 01:08:47,469 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:47,469 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:47,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:47,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:08:47,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:47,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:48,597 INFO L134 CoverageAnalysis]: Checked inductivity of 62935 backedges. 31605 proven. 16380 refuted. 0 times theorem prover too weak. 14950 trivial. 0 not checked. [2018-10-01 01:08:48,597 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:48,598 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:48,611 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:08:48,789 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:08:48,789 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:48,796 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:49,746 INFO L134 CoverageAnalysis]: Checked inductivity of 62935 backedges. 31605 proven. 16380 refuted. 0 times theorem prover too weak. 14950 trivial. 0 not checked. [2018-10-01 01:08:49,766 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:49,766 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 106 [2018-10-01 01:08:49,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-10-01 01:08:49,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-10-01 01:08:49,768 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:49,768 INFO L87 Difference]: Start difference. First operand 32445 states and 32755 transitions. Second operand 107 states. [2018-10-01 01:08:51,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:51,059 INFO L93 Difference]: Finished difference Result 64590 states and 65211 transitions. [2018-10-01 01:08:51,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-10-01 01:08:51,060 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 617 [2018-10-01 01:08:51,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:51,079 INFO L225 Difference]: With dead ends: 64590 [2018-10-01 01:08:51,079 INFO L226 Difference]: Without dead ends: 32453 [2018-10-01 01:08:51,091 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 722 GetRequests, 617 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 01:08:51,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32453 states. [2018-10-01 01:08:51,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32453 to 32445. [2018-10-01 01:08:51,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32445 states. [2018-10-01 01:08:51,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32445 states to 32445 states and 32755 transitions. [2018-10-01 01:08:51,663 INFO L78 Accepts]: Start accepts. Automaton has 32445 states and 32755 transitions. Word has length 617 [2018-10-01 01:08:51,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:51,663 INFO L480 AbstractCegarLoop]: Abstraction has 32445 states and 32755 transitions. [2018-10-01 01:08:51,663 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-10-01 01:08:51,664 INFO L276 IsEmpty]: Start isEmpty. Operand 32445 states and 32755 transitions. [2018-10-01 01:08:51,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 618 [2018-10-01 01:08:51,684 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:51,684 INFO L375 BasicCegarLoop]: trace histogram [205, 204, 204, 1, 1, 1, 1] [2018-10-01 01:08:51,685 INFO L423 AbstractCegarLoop]: === Iteration 177 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:51,685 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:51,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1827031175, now seen corresponding path program 9 times [2018-10-01 01:08:51,685 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:51,685 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:51,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:51,686 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:51,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:51,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:52,779 INFO L134 CoverageAnalysis]: Checked inductivity of 62935 backedges. 31594 proven. 16590 refuted. 0 times theorem prover too weak. 14751 trivial. 0 not checked. [2018-10-01 01:08:52,780 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:52,780 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:52,786 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:08:53,280 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 152 check-sat command(s) [2018-10-01 01:08:53,280 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:53,287 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:01,274 INFO L134 CoverageAnalysis]: Checked inductivity of 62935 backedges. 31903 proven. 14652 refuted. 0 times theorem prover too weak. 16380 trivial. 0 not checked. [2018-10-01 01:09:01,295 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:01,295 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 102] total 209 [2018-10-01 01:09:01,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 209 states [2018-10-01 01:09:01,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 209 interpolants. [2018-10-01 01:09:01,297 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:01,298 INFO L87 Difference]: Start difference. First operand 32445 states and 32755 transitions. Second operand 209 states. [2018-10-01 01:10:41,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:41,253 INFO L93 Difference]: Finished difference Result 64691 states and 65213 transitions. [2018-10-01 01:10:41,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 308 states. [2018-10-01 01:10:41,254 INFO L78 Accepts]: Start accepts. Automaton has 209 states. Word has length 617 [2018-10-01 01:10:41,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:41,275 INFO L225 Difference]: With dead ends: 64691 [2018-10-01 01:10:41,275 INFO L226 Difference]: Without dead ends: 32554 [2018-10-01 01:10:41,287 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 928 GetRequests, 516 SyntacticMatches, 0 SemanticMatches, 412 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.0s Time [2018-10-01 01:10:41,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32554 states. [2018-10-01 01:10:41,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32554 to 32448. [2018-10-01 01:10:41,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32448 states. [2018-10-01 01:10:41,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32448 states to 32448 states and 32757 transitions. [2018-10-01 01:10:41,822 INFO L78 Accepts]: Start accepts. Automaton has 32448 states and 32757 transitions. Word has length 617 [2018-10-01 01:10:41,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:41,822 INFO L480 AbstractCegarLoop]: Abstraction has 32448 states and 32757 transitions. [2018-10-01 01:10:41,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has 209 states. [2018-10-01 01:10:41,822 INFO L276 IsEmpty]: Start isEmpty. Operand 32448 states and 32757 transitions. [2018-10-01 01:10:41,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 621 [2018-10-01 01:10:41,844 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:41,844 INFO L375 BasicCegarLoop]: trace histogram [206, 205, 205, 1, 1, 1, 1] [2018-10-01 01:10:41,844 INFO L423 AbstractCegarLoop]: === Iteration 178 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:41,844 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:41,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1185338967, now seen corresponding path program 10 times [2018-10-01 01:10:41,844 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:41,844 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:41,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:41,845 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:41,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:41,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:43,154 INFO L134 CoverageAnalysis]: Checked inductivity of 63551 backedges. 31906 proven. 16695 refuted. 0 times theorem prover too weak. 14950 trivial. 0 not checked. [2018-10-01 01:10:43,154 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:43,154 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:43,165 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:10:43,347 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:10:43,348 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:43,356 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:44,236 INFO L134 CoverageAnalysis]: Checked inductivity of 63551 backedges. 31906 proven. 16695 refuted. 0 times theorem prover too weak. 14950 trivial. 0 not checked. [2018-10-01 01:10:44,262 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:44,263 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 107 [2018-10-01 01:10:44,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-10-01 01:10:44,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-10-01 01:10:44,264 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:44,264 INFO L87 Difference]: Start difference. First operand 32448 states and 32757 transitions. Second operand 108 states. [2018-10-01 01:10:45,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:45,680 INFO L93 Difference]: Finished difference Result 64593 states and 65212 transitions. [2018-10-01 01:10:45,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-10-01 01:10:45,680 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 620 [2018-10-01 01:10:45,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:45,703 INFO L225 Difference]: With dead ends: 64593 [2018-10-01 01:10:45,703 INFO L226 Difference]: Without dead ends: 32456 [2018-10-01 01:10:45,715 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 726 GetRequests, 620 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 01:10:45,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32456 states. [2018-10-01 01:10:46,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32456 to 32448. [2018-10-01 01:10:46,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32448 states. [2018-10-01 01:10:46,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32448 states to 32448 states and 32757 transitions. [2018-10-01 01:10:46,225 INFO L78 Accepts]: Start accepts. Automaton has 32448 states and 32757 transitions. Word has length 620 [2018-10-01 01:10:46,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:46,225 INFO L480 AbstractCegarLoop]: Abstraction has 32448 states and 32757 transitions. [2018-10-01 01:10:46,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-10-01 01:10:46,225 INFO L276 IsEmpty]: Start isEmpty. Operand 32448 states and 32757 transitions. [2018-10-01 01:10:46,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 621 [2018-10-01 01:10:46,247 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:46,247 INFO L375 BasicCegarLoop]: trace histogram [206, 205, 205, 1, 1, 1, 1] [2018-10-01 01:10:46,247 INFO L423 AbstractCegarLoop]: === Iteration 179 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:46,247 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:46,247 INFO L82 PathProgramCache]: Analyzing trace with hash -248901673, now seen corresponding path program 11 times [2018-10-01 01:10:46,247 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:46,247 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:46,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:46,248 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:46,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:46,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:47,132 INFO L134 CoverageAnalysis]: Checked inductivity of 63551 backedges. 31893 proven. 16907 refuted. 0 times theorem prover too weak. 14751 trivial. 0 not checked. [2018-10-01 01:10:47,132 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:47,132 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:47,139 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:10:47,953 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 207 check-sat command(s) [2018-10-01 01:10:47,954 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:47,960 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:49,721 INFO L134 CoverageAnalysis]: Checked inductivity of 63551 backedges. 31860 proven. 17334 refuted. 0 times theorem prover too weak. 14357 trivial. 0 not checked. [2018-10-01 01:10:49,742 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:49,743 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 109] total 216 [2018-10-01 01:10:49,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 217 states [2018-10-01 01:10:49,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 217 interpolants. [2018-10-01 01:10:49,746 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:49,746 INFO L87 Difference]: Start difference. First operand 32448 states and 32757 transitions. Second operand 217 states. [2018-10-01 01:10:59,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:59,293 INFO L93 Difference]: Finished difference Result 64600 states and 65223 transitions. [2018-10-01 01:10:59,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2018-10-01 01:10:59,293 INFO L78 Accepts]: Start accepts. Automaton has 217 states. Word has length 620 [2018-10-01 01:10:59,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:59,315 INFO L225 Difference]: With dead ends: 64600 [2018-10-01 01:10:59,316 INFO L226 Difference]: Without dead ends: 32463 [2018-10-01 01:10:59,333 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 940 GetRequests, 512 SyntacticMatches, 0 SemanticMatches, 428 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.1s Time [2018-10-01 01:10:59,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32463 states. [2018-10-01 01:10:59,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32463 to 32153. [2018-10-01 01:10:59,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32153 states. [2018-10-01 01:10:59,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32153 states to 32153 states and 32462 transitions. [2018-10-01 01:10:59,998 INFO L78 Accepts]: Start accepts. Automaton has 32153 states and 32462 transitions. Word has length 620 [2018-10-01 01:10:59,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:59,998 INFO L480 AbstractCegarLoop]: Abstraction has 32153 states and 32462 transitions. [2018-10-01 01:10:59,999 INFO L481 AbstractCegarLoop]: Interpolant automaton has 217 states. [2018-10-01 01:10:59,999 INFO L276 IsEmpty]: Start isEmpty. Operand 32153 states and 32462 transitions. [2018-10-01 01:11:00,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 624 [2018-10-01 01:11:00,020 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:00,020 INFO L375 BasicCegarLoop]: trace histogram [207, 206, 206, 1, 1, 1, 1] [2018-10-01 01:11:00,020 INFO L423 AbstractCegarLoop]: === Iteration 180 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:00,020 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:00,020 INFO L82 PathProgramCache]: Analyzing trace with hash -647722805, now seen corresponding path program 12 times [2018-10-01 01:11:00,020 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:00,021 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:00,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:00,021 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:00,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:00,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:00,903 INFO L134 CoverageAnalysis]: Checked inductivity of 64170 backedges. 32192 proven. 17227 refuted. 0 times theorem prover too weak. 14751 trivial. 0 not checked. [2018-10-01 01:11:00,904 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:00,904 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:00,916 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:11:01,649 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 206 check-sat command(s) [2018-10-01 01:11:01,649 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:01,656 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:03,638 INFO L134 CoverageAnalysis]: Checked inductivity of 64170 backedges. 32155 proven. 17658 refuted. 0 times theorem prover too weak. 14357 trivial. 0 not checked. [2018-10-01 01:11:03,658 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:03,659 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 110] total 218 [2018-10-01 01:11:03,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 219 states [2018-10-01 01:11:03,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 219 interpolants. [2018-10-01 01:11:03,661 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:03,661 INFO L87 Difference]: Start difference. First operand 32153 states and 32462 transitions. Second operand 219 states. [2018-10-01 01:11:13,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:13,409 INFO L93 Difference]: Finished difference Result 64603 states and 65225 transitions. [2018-10-01 01:11:13,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 220 states. [2018-10-01 01:11:13,409 INFO L78 Accepts]: Start accepts. Automaton has 219 states. Word has length 623 [2018-10-01 01:11:13,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:13,431 INFO L225 Difference]: With dead ends: 64603 [2018-10-01 01:11:13,431 INFO L226 Difference]: Without dead ends: 32466 [2018-10-01 01:11:13,446 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 946 GetRequests, 514 SyntacticMatches, 0 SemanticMatches, 432 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.2s Time [2018-10-01 01:11:13,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32466 states. [2018-10-01 01:11:13,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32466 to 32156. [2018-10-01 01:11:13,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32156 states. [2018-10-01 01:11:13,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32156 states to 32156 states and 32465 transitions. [2018-10-01 01:11:13,966 INFO L78 Accepts]: Start accepts. Automaton has 32156 states and 32465 transitions. Word has length 623 [2018-10-01 01:11:13,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:13,966 INFO L480 AbstractCegarLoop]: Abstraction has 32156 states and 32465 transitions. [2018-10-01 01:11:13,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has 219 states. [2018-10-01 01:11:13,966 INFO L276 IsEmpty]: Start isEmpty. Operand 32156 states and 32465 transitions. [2018-10-01 01:11:13,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 627 [2018-10-01 01:11:13,988 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:13,988 INFO L375 BasicCegarLoop]: trace histogram [208, 207, 207, 1, 1, 1, 1] [2018-10-01 01:11:13,988 INFO L423 AbstractCegarLoop]: === Iteration 181 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:13,988 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:13,988 INFO L82 PathProgramCache]: Analyzing trace with hash -2048525481, now seen corresponding path program 13 times [2018-10-01 01:11:13,989 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:13,989 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:13,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:13,989 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:13,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:14,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:15,085 INFO L134 CoverageAnalysis]: Checked inductivity of 64792 backedges. 32491 proven. 17550 refuted. 0 times theorem prover too weak. 14751 trivial. 0 not checked. [2018-10-01 01:11:15,086 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:15,086 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:15,093 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:11:15,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:15,275 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:15,955 INFO L134 CoverageAnalysis]: Checked inductivity of 64792 backedges. 32491 proven. 17550 refuted. 0 times theorem prover too weak. 14751 trivial. 0 not checked. [2018-10-01 01:11:15,976 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:15,976 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 110 [2018-10-01 01:11:15,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-10-01 01:11:15,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-10-01 01:11:15,977 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:15,978 INFO L87 Difference]: Start difference. First operand 32156 states and 32465 transitions. Second operand 111 states. [2018-10-01 01:11:17,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:17,542 INFO L93 Difference]: Finished difference Result 64601 states and 65220 transitions. [2018-10-01 01:11:17,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-10-01 01:11:17,542 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 626 [2018-10-01 01:11:17,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:17,562 INFO L225 Difference]: With dead ends: 64601 [2018-10-01 01:11:17,562 INFO L226 Difference]: Without dead ends: 32464 [2018-10-01 01:11:17,577 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 735 GetRequests, 626 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:11:17,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32464 states. [2018-10-01 01:11:18,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32464 to 32457. [2018-10-01 01:11:18,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32457 states. [2018-10-01 01:11:18,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32457 states to 32457 states and 32766 transitions. [2018-10-01 01:11:18,272 INFO L78 Accepts]: Start accepts. Automaton has 32457 states and 32766 transitions. Word has length 626 [2018-10-01 01:11:18,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:18,272 INFO L480 AbstractCegarLoop]: Abstraction has 32457 states and 32766 transitions. [2018-10-01 01:11:18,272 INFO L481 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-10-01 01:11:18,272 INFO L276 IsEmpty]: Start isEmpty. Operand 32457 states and 32766 transitions. [2018-10-01 01:11:18,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 630 [2018-10-01 01:11:18,291 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:18,291 INFO L375 BasicCegarLoop]: trace histogram [209, 208, 208, 1, 1, 1, 1] [2018-10-01 01:11:18,291 INFO L423 AbstractCegarLoop]: === Iteration 182 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:18,291 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:18,291 INFO L82 PathProgramCache]: Analyzing trace with hash 836169035, now seen corresponding path program 14 times [2018-10-01 01:11:18,291 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:18,291 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:18,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:18,292 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:11:18,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:18,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:19,159 INFO L134 CoverageAnalysis]: Checked inductivity of 65417 backedges. 32790 proven. 17876 refuted. 0 times theorem prover too weak. 14751 trivial. 0 not checked. [2018-10-01 01:11:19,160 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:19,160 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:19,167 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:11:19,345 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:11:19,345 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:19,352 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:20,035 INFO L134 CoverageAnalysis]: Checked inductivity of 65417 backedges. 32790 proven. 17876 refuted. 0 times theorem prover too weak. 14751 trivial. 0 not checked. [2018-10-01 01:11:20,055 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:20,056 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111] total 111 [2018-10-01 01:11:20,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-10-01 01:11:20,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-10-01 01:11:20,058 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:20,058 INFO L87 Difference]: Start difference. First operand 32457 states and 32766 transitions. Second operand 112 states. [2018-10-01 01:11:21,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:21,826 INFO L93 Difference]: Finished difference Result 64604 states and 65223 transitions. [2018-10-01 01:11:21,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-10-01 01:11:21,826 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 629 [2018-10-01 01:11:21,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:21,851 INFO L225 Difference]: With dead ends: 64604 [2018-10-01 01:11:21,851 INFO L226 Difference]: Without dead ends: 32467 [2018-10-01 01:11:21,866 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 739 GetRequests, 629 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:11:21,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32467 states. [2018-10-01 01:11:22,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32467 to 32460. [2018-10-01 01:11:22,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32460 states. [2018-10-01 01:11:22,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32460 states to 32460 states and 32769 transitions. [2018-10-01 01:11:22,403 INFO L78 Accepts]: Start accepts. Automaton has 32460 states and 32769 transitions. Word has length 629 [2018-10-01 01:11:22,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:22,403 INFO L480 AbstractCegarLoop]: Abstraction has 32460 states and 32769 transitions. [2018-10-01 01:11:22,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-10-01 01:11:22,403 INFO L276 IsEmpty]: Start isEmpty. Operand 32460 states and 32769 transitions. [2018-10-01 01:11:22,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2018-10-01 01:11:22,425 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:22,425 INFO L375 BasicCegarLoop]: trace histogram [210, 209, 209, 1, 1, 1, 1] [2018-10-01 01:11:22,425 INFO L423 AbstractCegarLoop]: === Iteration 183 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:22,425 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:22,426 INFO L82 PathProgramCache]: Analyzing trace with hash -2090857129, now seen corresponding path program 15 times [2018-10-01 01:11:22,426 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:22,426 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:22,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:22,426 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:22,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:22,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:23,375 INFO L134 CoverageAnalysis]: Checked inductivity of 66045 backedges. 33110 proven. 17985 refuted. 0 times theorem prover too weak. 14950 trivial. 0 not checked. [2018-10-01 01:11:23,375 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:23,375 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:23,382 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:11:24,324 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 211 check-sat command(s) [2018-10-01 01:11:24,324 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:24,333 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:25,287 INFO L134 CoverageAnalysis]: Checked inductivity of 66045 backedges. 33110 proven. 17985 refuted. 0 times theorem prover too weak. 14950 trivial. 0 not checked. [2018-10-01 01:11:25,308 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:25,308 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111] total 111 [2018-10-01 01:11:25,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-10-01 01:11:25,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-10-01 01:11:25,310 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:25,310 INFO L87 Difference]: Start difference. First operand 32460 states and 32769 transitions. Second operand 112 states. [2018-10-01 01:11:26,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:26,879 INFO L93 Difference]: Finished difference Result 64605 states and 65224 transitions. [2018-10-01 01:11:26,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-10-01 01:11:26,879 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 632 [2018-10-01 01:11:26,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:26,903 INFO L225 Difference]: With dead ends: 64605 [2018-10-01 01:11:26,904 INFO L226 Difference]: Without dead ends: 32468 [2018-10-01 01:11:26,920 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 742 GetRequests, 632 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 01:11:26,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32468 states. [2018-10-01 01:11:27,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32468 to 32460. [2018-10-01 01:11:27,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32460 states. [2018-10-01 01:11:27,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32460 states to 32460 states and 32769 transitions. [2018-10-01 01:11:27,461 INFO L78 Accepts]: Start accepts. Automaton has 32460 states and 32769 transitions. Word has length 632 [2018-10-01 01:11:27,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:27,461 INFO L480 AbstractCegarLoop]: Abstraction has 32460 states and 32769 transitions. [2018-10-01 01:11:27,461 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-10-01 01:11:27,461 INFO L276 IsEmpty]: Start isEmpty. Operand 32460 states and 32769 transitions. [2018-10-01 01:11:27,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2018-10-01 01:11:27,484 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:27,484 INFO L375 BasicCegarLoop]: trace histogram [210, 209, 209, 1, 1, 1, 1] [2018-10-01 01:11:27,484 INFO L423 AbstractCegarLoop]: === Iteration 184 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:27,484 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:27,485 INFO L82 PathProgramCache]: Analyzing trace with hash 769869527, now seen corresponding path program 16 times [2018-10-01 01:11:27,485 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:27,485 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:27,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:27,485 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:27,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:27,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:28,423 INFO L134 CoverageAnalysis]: Checked inductivity of 66045 backedges. 33089 proven. 18205 refuted. 0 times theorem prover too weak. 14751 trivial. 0 not checked. [2018-10-01 01:11:28,423 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:28,423 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:28,430 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:11:28,607 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:11:28,607 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:28,614 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:29,606 INFO L134 CoverageAnalysis]: Checked inductivity of 66045 backedges. 33089 proven. 18205 refuted. 0 times theorem prover too weak. 14751 trivial. 0 not checked. [2018-10-01 01:11:29,627 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:29,627 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112] total 112 [2018-10-01 01:11:29,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-10-01 01:11:29,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-10-01 01:11:29,629 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:29,629 INFO L87 Difference]: Start difference. First operand 32460 states and 32769 transitions. Second operand 113 states. [2018-10-01 01:11:31,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:31,073 INFO L93 Difference]: Finished difference Result 64607 states and 65226 transitions. [2018-10-01 01:11:31,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-10-01 01:11:31,073 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 632 [2018-10-01 01:11:31,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:31,097 INFO L225 Difference]: With dead ends: 64607 [2018-10-01 01:11:31,097 INFO L226 Difference]: Without dead ends: 32470 [2018-10-01 01:11:31,114 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 743 GetRequests, 632 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 01:11:31,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32470 states. [2018-10-01 01:11:31,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32470 to 32463. [2018-10-01 01:11:31,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32463 states. [2018-10-01 01:11:31,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32463 states to 32463 states and 32772 transitions. [2018-10-01 01:11:31,652 INFO L78 Accepts]: Start accepts. Automaton has 32463 states and 32772 transitions. Word has length 632 [2018-10-01 01:11:31,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:31,652 INFO L480 AbstractCegarLoop]: Abstraction has 32463 states and 32772 transitions. [2018-10-01 01:11:31,652 INFO L481 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-10-01 01:11:31,652 INFO L276 IsEmpty]: Start isEmpty. Operand 32463 states and 32772 transitions. [2018-10-01 01:11:31,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 636 [2018-10-01 01:11:31,674 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:31,674 INFO L375 BasicCegarLoop]: trace histogram [211, 210, 210, 1, 1, 1, 1] [2018-10-01 01:11:31,674 INFO L423 AbstractCegarLoop]: === Iteration 185 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:31,674 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:31,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1534543797, now seen corresponding path program 17 times [2018-10-01 01:11:31,675 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:31,675 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:31,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:31,675 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:31,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:31,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:32,794 INFO L134 CoverageAnalysis]: Checked inductivity of 66676 backedges. 33411 proven. 18315 refuted. 0 times theorem prover too weak. 14950 trivial. 0 not checked. [2018-10-01 01:11:32,794 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:32,794 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:32,802 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:11:33,626 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 212 check-sat command(s) [2018-10-01 01:11:33,626 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:33,634 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:34,394 INFO L134 CoverageAnalysis]: Checked inductivity of 66676 backedges. 33411 proven. 18315 refuted. 0 times theorem prover too weak. 14950 trivial. 0 not checked. [2018-10-01 01:11:34,415 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:34,416 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112] total 112 [2018-10-01 01:11:34,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-10-01 01:11:34,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-10-01 01:11:34,417 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:34,417 INFO L87 Difference]: Start difference. First operand 32463 states and 32772 transitions. Second operand 113 states. [2018-10-01 01:11:36,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:36,017 INFO L93 Difference]: Finished difference Result 64608 states and 65227 transitions. [2018-10-01 01:11:36,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-10-01 01:11:36,018 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 635 [2018-10-01 01:11:36,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:36,041 INFO L225 Difference]: With dead ends: 64608 [2018-10-01 01:11:36,041 INFO L226 Difference]: Without dead ends: 32471 [2018-10-01 01:11:36,058 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 746 GetRequests, 635 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 01:11:36,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32471 states. [2018-10-01 01:11:36,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32471 to 32463. [2018-10-01 01:11:36,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32463 states. [2018-10-01 01:11:36,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32463 states to 32463 states and 32772 transitions. [2018-10-01 01:11:36,601 INFO L78 Accepts]: Start accepts. Automaton has 32463 states and 32772 transitions. Word has length 635 [2018-10-01 01:11:36,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:36,602 INFO L480 AbstractCegarLoop]: Abstraction has 32463 states and 32772 transitions. [2018-10-01 01:11:36,602 INFO L481 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-10-01 01:11:36,602 INFO L276 IsEmpty]: Start isEmpty. Operand 32463 states and 32772 transitions. [2018-10-01 01:11:36,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 636 [2018-10-01 01:11:36,623 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:36,623 INFO L375 BasicCegarLoop]: trace histogram [211, 210, 210, 1, 1, 1, 1] [2018-10-01 01:11:36,623 INFO L423 AbstractCegarLoop]: === Iteration 186 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:36,623 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:36,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1326182859, now seen corresponding path program 18 times [2018-10-01 01:11:36,623 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:36,623 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:36,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:36,624 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:36,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:36,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:37,748 INFO L134 CoverageAnalysis]: Checked inductivity of 66676 backedges. 33388 proven. 18537 refuted. 0 times theorem prover too weak. 14751 trivial. 0 not checked. [2018-10-01 01:11:37,748 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:37,748 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:37,756 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:11:38,520 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 210 check-sat command(s) [2018-10-01 01:11:38,521 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:38,528 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:39,408 INFO L134 CoverageAnalysis]: Checked inductivity of 66676 backedges. 33388 proven. 18537 refuted. 0 times theorem prover too weak. 14751 trivial. 0 not checked. [2018-10-01 01:11:39,429 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:39,429 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113] total 113 [2018-10-01 01:11:39,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-10-01 01:11:39,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-10-01 01:11:39,431 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:39,431 INFO L87 Difference]: Start difference. First operand 32463 states and 32772 transitions. Second operand 114 states. [2018-10-01 01:11:41,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:41,155 INFO L93 Difference]: Finished difference Result 64610 states and 65229 transitions. [2018-10-01 01:11:41,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-10-01 01:11:41,156 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 635 [2018-10-01 01:11:41,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:41,180 INFO L225 Difference]: With dead ends: 64610 [2018-10-01 01:11:41,180 INFO L226 Difference]: Without dead ends: 32473 [2018-10-01 01:11:41,196 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 635 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 01:11:41,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32473 states. [2018-10-01 01:11:41,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32473 to 32466. [2018-10-01 01:11:41,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32466 states. [2018-10-01 01:11:41,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32466 states to 32466 states and 32775 transitions. [2018-10-01 01:11:41,942 INFO L78 Accepts]: Start accepts. Automaton has 32466 states and 32775 transitions. Word has length 635 [2018-10-01 01:11:41,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:41,943 INFO L480 AbstractCegarLoop]: Abstraction has 32466 states and 32775 transitions. [2018-10-01 01:11:41,943 INFO L481 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-10-01 01:11:41,943 INFO L276 IsEmpty]: Start isEmpty. Operand 32466 states and 32775 transitions. [2018-10-01 01:11:41,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 639 [2018-10-01 01:11:41,964 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:41,964 INFO L375 BasicCegarLoop]: trace histogram [212, 211, 211, 1, 1, 1, 1] [2018-10-01 01:11:41,964 INFO L423 AbstractCegarLoop]: === Iteration 187 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:41,965 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:41,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1612101847, now seen corresponding path program 19 times [2018-10-01 01:11:41,965 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:41,965 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:41,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:41,965 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:41,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:42,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:42,914 INFO L134 CoverageAnalysis]: Checked inductivity of 67310 backedges. 33712 proven. 18648 refuted. 0 times theorem prover too weak. 14950 trivial. 0 not checked. [2018-10-01 01:11:42,914 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:42,914 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:42,921 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:11:43,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:43,103 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:43,813 INFO L134 CoverageAnalysis]: Checked inductivity of 67310 backedges. 33712 proven. 18648 refuted. 0 times theorem prover too weak. 14950 trivial. 0 not checked. [2018-10-01 01:11:43,834 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:43,834 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113] total 113 [2018-10-01 01:11:43,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-10-01 01:11:43,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-10-01 01:11:43,836 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:43,836 INFO L87 Difference]: Start difference. First operand 32466 states and 32775 transitions. Second operand 114 states. [2018-10-01 01:11:45,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:45,619 INFO L93 Difference]: Finished difference Result 64611 states and 65230 transitions. [2018-10-01 01:11:45,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-10-01 01:11:45,619 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 638 [2018-10-01 01:11:45,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:45,639 INFO L225 Difference]: With dead ends: 64611 [2018-10-01 01:11:45,639 INFO L226 Difference]: Without dead ends: 32474 [2018-10-01 01:11:45,652 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 750 GetRequests, 638 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:11:45,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32474 states. [2018-10-01 01:11:46,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32474 to 32466. [2018-10-01 01:11:46,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32466 states. [2018-10-01 01:11:46,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32466 states to 32466 states and 32775 transitions. [2018-10-01 01:11:46,176 INFO L78 Accepts]: Start accepts. Automaton has 32466 states and 32775 transitions. Word has length 638 [2018-10-01 01:11:46,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:46,176 INFO L480 AbstractCegarLoop]: Abstraction has 32466 states and 32775 transitions. [2018-10-01 01:11:46,176 INFO L481 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-10-01 01:11:46,176 INFO L276 IsEmpty]: Start isEmpty. Operand 32466 states and 32775 transitions. [2018-10-01 01:11:46,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 639 [2018-10-01 01:11:46,198 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:46,198 INFO L375 BasicCegarLoop]: trace histogram [212, 211, 211, 1, 1, 1, 1] [2018-10-01 01:11:46,198 INFO L423 AbstractCegarLoop]: === Iteration 188 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:46,198 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:46,198 INFO L82 PathProgramCache]: Analyzing trace with hash 177861207, now seen corresponding path program 20 times [2018-10-01 01:11:46,198 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:46,198 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:46,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:46,199 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:11:46,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:46,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:47,123 INFO L134 CoverageAnalysis]: Checked inductivity of 67310 backedges. 33687 proven. 18872 refuted. 0 times theorem prover too weak. 14751 trivial. 0 not checked. [2018-10-01 01:11:47,123 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:47,123 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:47,131 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:11:47,309 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:11:47,309 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:47,316 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:48,047 INFO L134 CoverageAnalysis]: Checked inductivity of 67310 backedges. 33687 proven. 18872 refuted. 0 times theorem prover too weak. 14751 trivial. 0 not checked. [2018-10-01 01:11:48,068 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:48,069 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 114] total 114 [2018-10-01 01:11:48,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-10-01 01:11:48,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-10-01 01:11:48,070 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:48,070 INFO L87 Difference]: Start difference. First operand 32466 states and 32775 transitions. Second operand 115 states. [2018-10-01 01:11:49,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:49,574 INFO L93 Difference]: Finished difference Result 64613 states and 65232 transitions. [2018-10-01 01:11:49,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-10-01 01:11:49,574 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 638 [2018-10-01 01:11:49,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:49,596 INFO L225 Difference]: With dead ends: 64613 [2018-10-01 01:11:49,596 INFO L226 Difference]: Without dead ends: 32476 [2018-10-01 01:11:49,610 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 751 GetRequests, 638 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:11:49,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32476 states. [2018-10-01 01:11:50,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32476 to 32469. [2018-10-01 01:11:50,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32469 states. [2018-10-01 01:11:50,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32469 states to 32469 states and 32778 transitions. [2018-10-01 01:11:50,152 INFO L78 Accepts]: Start accepts. Automaton has 32469 states and 32778 transitions. Word has length 638 [2018-10-01 01:11:50,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:50,152 INFO L480 AbstractCegarLoop]: Abstraction has 32469 states and 32778 transitions. [2018-10-01 01:11:50,152 INFO L481 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-10-01 01:11:50,152 INFO L276 IsEmpty]: Start isEmpty. Operand 32469 states and 32778 transitions. [2018-10-01 01:11:50,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2018-10-01 01:11:50,174 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:50,174 INFO L375 BasicCegarLoop]: trace histogram [213, 212, 212, 1, 1, 1, 1] [2018-10-01 01:11:50,174 INFO L423 AbstractCegarLoop]: === Iteration 189 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:50,174 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:50,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1376279755, now seen corresponding path program 21 times [2018-10-01 01:11:50,174 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:50,174 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:50,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:50,175 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:50,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:50,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:51,271 INFO L134 CoverageAnalysis]: Checked inductivity of 67947 backedges. 34013 proven. 18984 refuted. 0 times theorem prover too weak. 14950 trivial. 0 not checked. [2018-10-01 01:11:51,271 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:51,272 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:51,279 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:11:52,249 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 214 check-sat command(s) [2018-10-01 01:11:52,249 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:52,258 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:53,118 INFO L134 CoverageAnalysis]: Checked inductivity of 67947 backedges. 34013 proven. 18984 refuted. 0 times theorem prover too weak. 14950 trivial. 0 not checked. [2018-10-01 01:11:53,140 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:53,141 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 114] total 114 [2018-10-01 01:11:53,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-10-01 01:11:53,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-10-01 01:11:53,142 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:53,142 INFO L87 Difference]: Start difference. First operand 32469 states and 32778 transitions. Second operand 115 states. [2018-10-01 01:11:54,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:54,683 INFO L93 Difference]: Finished difference Result 64614 states and 65233 transitions. [2018-10-01 01:11:54,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-10-01 01:11:54,684 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 641 [2018-10-01 01:11:54,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:54,705 INFO L225 Difference]: With dead ends: 64614 [2018-10-01 01:11:54,705 INFO L226 Difference]: Without dead ends: 32477 [2018-10-01 01:11:54,722 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 754 GetRequests, 641 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 01:11:54,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32477 states. [2018-10-01 01:11:55,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32477 to 32469. [2018-10-01 01:11:55,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32469 states. [2018-10-01 01:11:55,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32469 states to 32469 states and 32778 transitions. [2018-10-01 01:11:55,257 INFO L78 Accepts]: Start accepts. Automaton has 32469 states and 32778 transitions. Word has length 641 [2018-10-01 01:11:55,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:55,257 INFO L480 AbstractCegarLoop]: Abstraction has 32469 states and 32778 transitions. [2018-10-01 01:11:55,257 INFO L481 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-10-01 01:11:55,257 INFO L276 IsEmpty]: Start isEmpty. Operand 32469 states and 32778 transitions. [2018-10-01 01:11:55,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2018-10-01 01:11:55,278 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:55,278 INFO L375 BasicCegarLoop]: trace histogram [213, 212, 212, 1, 1, 1, 1] [2018-10-01 01:11:55,278 INFO L423 AbstractCegarLoop]: === Iteration 190 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:55,278 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:55,279 INFO L82 PathProgramCache]: Analyzing trace with hash -57960885, now seen corresponding path program 22 times [2018-10-01 01:11:55,279 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:55,279 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:55,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:55,279 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:55,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:55,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:56,380 INFO L134 CoverageAnalysis]: Checked inductivity of 67947 backedges. 33986 proven. 19210 refuted. 0 times theorem prover too weak. 14751 trivial. 0 not checked. [2018-10-01 01:11:56,380 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:56,380 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:56,387 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:11:56,562 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:11:56,563 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:56,570 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:57,275 INFO L134 CoverageAnalysis]: Checked inductivity of 67947 backedges. 33986 proven. 19210 refuted. 0 times theorem prover too weak. 14751 trivial. 0 not checked. [2018-10-01 01:11:57,295 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:57,296 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 115] total 115 [2018-10-01 01:11:57,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-10-01 01:11:57,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-10-01 01:11:57,297 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:57,297 INFO L87 Difference]: Start difference. First operand 32469 states and 32778 transitions. Second operand 116 states. [2018-10-01 01:11:58,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:58,870 INFO L93 Difference]: Finished difference Result 64616 states and 65235 transitions. [2018-10-01 01:11:58,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-10-01 01:11:58,871 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 641 [2018-10-01 01:11:58,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:58,895 INFO L225 Difference]: With dead ends: 64616 [2018-10-01 01:11:58,895 INFO L226 Difference]: Without dead ends: 32479 [2018-10-01 01:11:58,911 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 755 GetRequests, 641 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:11:58,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32479 states. [2018-10-01 01:11:59,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32479 to 32472. [2018-10-01 01:11:59,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32472 states. [2018-10-01 01:11:59,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32472 states to 32472 states and 32781 transitions. [2018-10-01 01:11:59,454 INFO L78 Accepts]: Start accepts. Automaton has 32472 states and 32781 transitions. Word has length 641 [2018-10-01 01:11:59,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:59,454 INFO L480 AbstractCegarLoop]: Abstraction has 32472 states and 32781 transitions. [2018-10-01 01:11:59,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-10-01 01:11:59,454 INFO L276 IsEmpty]: Start isEmpty. Operand 32472 states and 32781 transitions. [2018-10-01 01:11:59,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 645 [2018-10-01 01:11:59,475 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:59,475 INFO L375 BasicCegarLoop]: trace histogram [214, 213, 213, 1, 1, 1, 1] [2018-10-01 01:11:59,476 INFO L423 AbstractCegarLoop]: === Iteration 191 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:59,476 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:59,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1728134057, now seen corresponding path program 23 times [2018-10-01 01:11:59,476 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:59,476 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:59,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:59,477 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:59,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:59,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:00,598 INFO L134 CoverageAnalysis]: Checked inductivity of 68587 backedges. 34314 proven. 19323 refuted. 0 times theorem prover too weak. 14950 trivial. 0 not checked. [2018-10-01 01:12:00,598 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:00,598 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:00,607 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:12:01,468 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 215 check-sat command(s) [2018-10-01 01:12:01,468 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:01,475 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:02,203 INFO L134 CoverageAnalysis]: Checked inductivity of 68587 backedges. 34314 proven. 19323 refuted. 0 times theorem prover too weak. 14950 trivial. 0 not checked. [2018-10-01 01:12:02,224 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:02,225 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 115] total 115 [2018-10-01 01:12:02,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-10-01 01:12:02,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-10-01 01:12:02,226 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:02,226 INFO L87 Difference]: Start difference. First operand 32472 states and 32781 transitions. Second operand 116 states. [2018-10-01 01:12:03,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:03,708 INFO L93 Difference]: Finished difference Result 64617 states and 65236 transitions. [2018-10-01 01:12:03,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-10-01 01:12:03,709 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 644 [2018-10-01 01:12:03,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:03,732 INFO L225 Difference]: With dead ends: 64617 [2018-10-01 01:12:03,733 INFO L226 Difference]: Without dead ends: 32480 [2018-10-01 01:12:03,750 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 758 GetRequests, 644 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:12:03,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32480 states. [2018-10-01 01:12:04,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32480 to 32472. [2018-10-01 01:12:04,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32472 states. [2018-10-01 01:12:04,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32472 states to 32472 states and 32781 transitions. [2018-10-01 01:12:04,496 INFO L78 Accepts]: Start accepts. Automaton has 32472 states and 32781 transitions. Word has length 644 [2018-10-01 01:12:04,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:04,496 INFO L480 AbstractCegarLoop]: Abstraction has 32472 states and 32781 transitions. [2018-10-01 01:12:04,496 INFO L481 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-10-01 01:12:04,496 INFO L276 IsEmpty]: Start isEmpty. Operand 32472 states and 32781 transitions. [2018-10-01 01:12:04,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 645 [2018-10-01 01:12:04,517 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:04,517 INFO L375 BasicCegarLoop]: trace histogram [214, 213, 213, 1, 1, 1, 1] [2018-10-01 01:12:04,517 INFO L423 AbstractCegarLoop]: === Iteration 192 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:04,517 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:04,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1132592599, now seen corresponding path program 24 times [2018-10-01 01:12:04,517 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:04,517 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:04,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:04,518 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:04,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:04,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:05,492 INFO L134 CoverageAnalysis]: Checked inductivity of 68587 backedges. 34285 proven. 19551 refuted. 0 times theorem prover too weak. 14751 trivial. 0 not checked. [2018-10-01 01:12:05,492 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:05,493 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:05,501 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:12:06,291 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 214 check-sat command(s) [2018-10-01 01:12:06,292 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:06,300 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:08,116 INFO L134 CoverageAnalysis]: Checked inductivity of 68587 backedges. 34220 proven. 20010 refuted. 0 times theorem prover too weak. 14357 trivial. 0 not checked. [2018-10-01 01:12:08,137 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:08,137 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116, 117] total 232 [2018-10-01 01:12:08,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 233 states [2018-10-01 01:12:08,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 233 interpolants. [2018-10-01 01:12:08,142 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:08,142 INFO L87 Difference]: Start difference. First operand 32472 states and 32781 transitions. Second operand 233 states. [2018-10-01 01:12:19,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:19,304 INFO L93 Difference]: Finished difference Result 64624 states and 65247 transitions. [2018-10-01 01:12:19,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 234 states. [2018-10-01 01:12:19,304 INFO L78 Accepts]: Start accepts. Automaton has 233 states. Word has length 644 [2018-10-01 01:12:19,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:19,326 INFO L225 Difference]: With dead ends: 64624 [2018-10-01 01:12:19,326 INFO L226 Difference]: Without dead ends: 32487 [2018-10-01 01:12:19,337 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 988 GetRequests, 528 SyntacticMatches, 0 SemanticMatches, 460 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.3s Time [2018-10-01 01:12:19,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32487 states. [2018-10-01 01:12:19,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32487 to 32177. [2018-10-01 01:12:19,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32177 states. [2018-10-01 01:12:19,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32177 states to 32177 states and 32486 transitions. [2018-10-01 01:12:19,873 INFO L78 Accepts]: Start accepts. Automaton has 32177 states and 32486 transitions. Word has length 644 [2018-10-01 01:12:19,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:19,873 INFO L480 AbstractCegarLoop]: Abstraction has 32177 states and 32486 transitions. [2018-10-01 01:12:19,873 INFO L481 AbstractCegarLoop]: Interpolant automaton has 233 states. [2018-10-01 01:12:19,873 INFO L276 IsEmpty]: Start isEmpty. Operand 32177 states and 32486 transitions. [2018-10-01 01:12:19,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 648 [2018-10-01 01:12:19,896 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:19,896 INFO L375 BasicCegarLoop]: trace histogram [215, 214, 214, 1, 1, 1, 1] [2018-10-01 01:12:19,896 INFO L423 AbstractCegarLoop]: === Iteration 193 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:19,896 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:19,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1071504075, now seen corresponding path program 25 times [2018-10-01 01:12:19,897 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:19,897 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:19,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:19,897 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:19,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:19,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:20,872 INFO L134 CoverageAnalysis]: Checked inductivity of 69230 backedges. 34584 proven. 19895 refuted. 0 times theorem prover too weak. 14751 trivial. 0 not checked. [2018-10-01 01:12:20,872 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:20,872 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:20,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:12:21,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:21,069 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:21,947 INFO L134 CoverageAnalysis]: Checked inductivity of 69230 backedges. 34584 proven. 19895 refuted. 0 times theorem prover too weak. 14751 trivial. 0 not checked. [2018-10-01 01:12:21,967 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:21,967 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117, 117] total 117 [2018-10-01 01:12:21,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-10-01 01:12:21,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-10-01 01:12:21,969 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:21,969 INFO L87 Difference]: Start difference. First operand 32177 states and 32486 transitions. Second operand 118 states. [2018-10-01 01:12:23,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:23,739 INFO L93 Difference]: Finished difference Result 64622 states and 65241 transitions. [2018-10-01 01:12:23,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-10-01 01:12:23,740 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 647 [2018-10-01 01:12:23,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:23,763 INFO L225 Difference]: With dead ends: 64622 [2018-10-01 01:12:23,763 INFO L226 Difference]: Without dead ends: 32485 [2018-10-01 01:12:23,785 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 763 GetRequests, 647 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:12:23,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32485 states. [2018-10-01 01:12:24,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32485 to 32478. [2018-10-01 01:12:24,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32478 states. [2018-10-01 01:12:24,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32478 states to 32478 states and 32787 transitions. [2018-10-01 01:12:24,361 INFO L78 Accepts]: Start accepts. Automaton has 32478 states and 32787 transitions. Word has length 647 [2018-10-01 01:12:24,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:24,361 INFO L480 AbstractCegarLoop]: Abstraction has 32478 states and 32787 transitions. [2018-10-01 01:12:24,361 INFO L481 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-10-01 01:12:24,362 INFO L276 IsEmpty]: Start isEmpty. Operand 32478 states and 32787 transitions. [2018-10-01 01:12:24,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 651 [2018-10-01 01:12:24,383 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:24,383 INFO L375 BasicCegarLoop]: trace histogram [216, 215, 215, 1, 1, 1, 1] [2018-10-01 01:12:24,383 INFO L423 AbstractCegarLoop]: === Iteration 194 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:24,383 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:24,383 INFO L82 PathProgramCache]: Analyzing trace with hash -2045548201, now seen corresponding path program 26 times [2018-10-01 01:12:24,383 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:24,384 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:24,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:24,385 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:12:24,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:24,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:25,617 INFO L134 CoverageAnalysis]: Checked inductivity of 69876 backedges. 34883 proven. 20242 refuted. 0 times theorem prover too weak. 14751 trivial. 0 not checked. [2018-10-01 01:12:25,617 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:25,617 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:25,632 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:12:25,817 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:12:25,817 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:25,824 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:26,767 INFO L134 CoverageAnalysis]: Checked inductivity of 69876 backedges. 34883 proven. 20242 refuted. 0 times theorem prover too weak. 14751 trivial. 0 not checked. [2018-10-01 01:12:26,787 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:26,788 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 118] total 118 [2018-10-01 01:12:26,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-10-01 01:12:26,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-10-01 01:12:26,791 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:26,792 INFO L87 Difference]: Start difference. First operand 32478 states and 32787 transitions. Second operand 119 states. [2018-10-01 01:12:28,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:28,167 INFO L93 Difference]: Finished difference Result 64625 states and 65244 transitions. [2018-10-01 01:12:28,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-10-01 01:12:28,168 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 650 [2018-10-01 01:12:28,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:28,192 INFO L225 Difference]: With dead ends: 64625 [2018-10-01 01:12:28,192 INFO L226 Difference]: Without dead ends: 32488 [2018-10-01 01:12:28,208 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 767 GetRequests, 650 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 01:12:28,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32488 states. [2018-10-01 01:12:28,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32488 to 32481. [2018-10-01 01:12:28,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32481 states. [2018-10-01 01:12:28,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32481 states to 32481 states and 32790 transitions. [2018-10-01 01:12:28,710 INFO L78 Accepts]: Start accepts. Automaton has 32481 states and 32790 transitions. Word has length 650 [2018-10-01 01:12:28,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:28,710 INFO L480 AbstractCegarLoop]: Abstraction has 32481 states and 32790 transitions. [2018-10-01 01:12:28,710 INFO L481 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-10-01 01:12:28,710 INFO L276 IsEmpty]: Start isEmpty. Operand 32481 states and 32790 transitions. [2018-10-01 01:12:28,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 654 [2018-10-01 01:12:28,729 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:28,729 INFO L375 BasicCegarLoop]: trace histogram [217, 216, 216, 1, 1, 1, 1] [2018-10-01 01:12:28,729 INFO L423 AbstractCegarLoop]: === Iteration 195 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:28,729 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:28,729 INFO L82 PathProgramCache]: Analyzing trace with hash 772244939, now seen corresponding path program 27 times [2018-10-01 01:12:28,730 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:28,730 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:28,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:28,730 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:28,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:28,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:29,870 INFO L134 CoverageAnalysis]: Checked inductivity of 70525 backedges. 35217 proven. 20358 refuted. 0 times theorem prover too weak. 14950 trivial. 0 not checked. [2018-10-01 01:12:29,871 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:29,871 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:29,878 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:12:30,892 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 218 check-sat command(s) [2018-10-01 01:12:30,892 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:30,900 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:35,764 INFO L134 CoverageAnalysis]: Checked inductivity of 70525 backedges. 35182 proven. 35343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:35,785 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:35,786 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 218] total 336 [2018-10-01 01:12:35,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 337 states [2018-10-01 01:12:35,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 337 interpolants. [2018-10-01 01:12:35,792 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:35,793 INFO L87 Difference]: Start difference. First operand 32481 states and 32790 transitions. Second operand 337 states. [2018-10-01 01:12:49,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:49,994 INFO L93 Difference]: Finished difference Result 64628 states and 65248 transitions. [2018-10-01 01:12:49,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 238 states. [2018-10-01 01:12:49,994 INFO L78 Accepts]: Start accepts. Automaton has 337 states. Word has length 653 [2018-10-01 01:12:49,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:50,015 INFO L225 Difference]: With dead ends: 64628 [2018-10-01 01:12:50,015 INFO L226 Difference]: Without dead ends: 32491 [2018-10-01 01:12:50,030 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1004 GetRequests, 435 SyntacticMatches, 0 SemanticMatches, 569 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.8s Time [2018-10-01 01:12:50,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32491 states. [2018-10-01 01:12:50,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32491 to 32484. [2018-10-01 01:12:50,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32484 states. [2018-10-01 01:12:50,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32484 states to 32484 states and 32793 transitions. [2018-10-01 01:12:50,604 INFO L78 Accepts]: Start accepts. Automaton has 32484 states and 32793 transitions. Word has length 653 [2018-10-01 01:12:50,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:50,604 INFO L480 AbstractCegarLoop]: Abstraction has 32484 states and 32793 transitions. [2018-10-01 01:12:50,604 INFO L481 AbstractCegarLoop]: Interpolant automaton has 337 states. [2018-10-01 01:12:50,605 INFO L276 IsEmpty]: Start isEmpty. Operand 32484 states and 32793 transitions. [2018-10-01 01:12:50,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2018-10-01 01:12:50,626 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:50,626 INFO L375 BasicCegarLoop]: trace histogram [218, 217, 217, 1, 1, 1, 1] [2018-10-01 01:12:50,626 INFO L423 AbstractCegarLoop]: === Iteration 196 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:50,626 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:50,626 INFO L82 PathProgramCache]: Analyzing trace with hash -616367273, now seen corresponding path program 28 times [2018-10-01 01:12:50,627 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:50,627 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:50,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:50,627 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:50,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:50,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:51,803 INFO L134 CoverageAnalysis]: Checked inductivity of 71177 backedges. 35518 proven. 20709 refuted. 0 times theorem prover too weak. 14950 trivial. 0 not checked. [2018-10-01 01:12:51,804 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:51,804 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:51,810 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:12:51,996 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:12:51,996 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:52,002 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:52,744 INFO L134 CoverageAnalysis]: Checked inductivity of 71177 backedges. 35518 proven. 20709 refuted. 0 times theorem prover too weak. 14950 trivial. 0 not checked. [2018-10-01 01:12:52,764 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:52,765 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119, 119] total 119 [2018-10-01 01:12:52,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-10-01 01:12:52,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-10-01 01:12:52,766 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:52,767 INFO L87 Difference]: Start difference. First operand 32484 states and 32793 transitions. Second operand 120 states. [2018-10-01 01:12:54,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:54,198 INFO L93 Difference]: Finished difference Result 64629 states and 65248 transitions. [2018-10-01 01:12:54,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-10-01 01:12:54,198 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 656 [2018-10-01 01:12:54,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:54,221 INFO L225 Difference]: With dead ends: 64629 [2018-10-01 01:12:54,221 INFO L226 Difference]: Without dead ends: 32492 [2018-10-01 01:12:54,235 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 774 GetRequests, 656 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 01:12:54,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32492 states. [2018-10-01 01:12:54,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32492 to 32484. [2018-10-01 01:12:54,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32484 states. [2018-10-01 01:12:55,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32484 states to 32484 states and 32793 transitions. [2018-10-01 01:12:55,022 INFO L78 Accepts]: Start accepts. Automaton has 32484 states and 32793 transitions. Word has length 656 [2018-10-01 01:12:55,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:55,023 INFO L480 AbstractCegarLoop]: Abstraction has 32484 states and 32793 transitions. [2018-10-01 01:12:55,023 INFO L481 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-10-01 01:12:55,023 INFO L276 IsEmpty]: Start isEmpty. Operand 32484 states and 32793 transitions. [2018-10-01 01:12:55,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2018-10-01 01:12:55,041 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:55,041 INFO L375 BasicCegarLoop]: trace histogram [218, 217, 217, 1, 1, 1, 1] [2018-10-01 01:12:55,041 INFO L423 AbstractCegarLoop]: === Iteration 197 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:55,041 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:55,041 INFO L82 PathProgramCache]: Analyzing trace with hash -2050607913, now seen corresponding path program 29 times [2018-10-01 01:12:55,041 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:55,041 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:55,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:55,042 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:55,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:55,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:56,196 INFO L134 CoverageAnalysis]: Checked inductivity of 71177 backedges. 35481 proven. 20945 refuted. 0 times theorem prover too weak. 14751 trivial. 0 not checked. [2018-10-01 01:12:56,196 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:56,196 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:56,203 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:12:57,097 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 219 check-sat command(s) [2018-10-01 01:12:57,097 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:57,105 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:58,936 INFO L134 CoverageAnalysis]: Checked inductivity of 71177 backedges. 35400 proven. 21420 refuted. 0 times theorem prover too weak. 14357 trivial. 0 not checked. [2018-10-01 01:12:58,956 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:58,957 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120, 121] total 240 [2018-10-01 01:12:58,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 241 states [2018-10-01 01:12:58,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 241 interpolants. [2018-10-01 01:12:58,960 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:58,960 INFO L87 Difference]: Start difference. First operand 32484 states and 32793 transitions. Second operand 241 states. [2018-10-01 01:13:11,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:11,010 INFO L93 Difference]: Finished difference Result 64636 states and 65259 transitions. [2018-10-01 01:13:11,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 242 states. [2018-10-01 01:13:11,010 INFO L78 Accepts]: Start accepts. Automaton has 241 states. Word has length 656 [2018-10-01 01:13:11,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:11,034 INFO L225 Difference]: With dead ends: 64636 [2018-10-01 01:13:11,034 INFO L226 Difference]: Without dead ends: 32499 [2018-10-01 01:13:11,051 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1012 GetRequests, 536 SyntacticMatches, 0 SemanticMatches, 476 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.8s Time [2018-10-01 01:13:11,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32499 states. [2018-10-01 01:13:11,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32499 to 32189. [2018-10-01 01:13:11,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32189 states. [2018-10-01 01:13:11,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32189 states to 32189 states and 32498 transitions. [2018-10-01 01:13:11,608 INFO L78 Accepts]: Start accepts. Automaton has 32189 states and 32498 transitions. Word has length 656 [2018-10-01 01:13:11,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:11,609 INFO L480 AbstractCegarLoop]: Abstraction has 32189 states and 32498 transitions. [2018-10-01 01:13:11,609 INFO L481 AbstractCegarLoop]: Interpolant automaton has 241 states. [2018-10-01 01:13:11,609 INFO L276 IsEmpty]: Start isEmpty. Operand 32189 states and 32498 transitions. [2018-10-01 01:13:11,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 660 [2018-10-01 01:13:11,630 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:11,630 INFO L375 BasicCegarLoop]: trace histogram [219, 218, 218, 1, 1, 1, 1] [2018-10-01 01:13:11,630 INFO L423 AbstractCegarLoop]: === Iteration 198 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:11,630 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:11,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1072020533, now seen corresponding path program 30 times [2018-10-01 01:13:11,630 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:11,630 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:11,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:11,631 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:13:11,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:11,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:12,658 INFO L134 CoverageAnalysis]: Checked inductivity of 71832 backedges. 35780 proven. 21301 refuted. 0 times theorem prover too weak. 14751 trivial. 0 not checked. [2018-10-01 01:13:12,658 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:12,658 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:12,666 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:13:13,496 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 218 check-sat command(s) [2018-10-01 01:13:13,497 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:13:13,504 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:15,559 INFO L134 CoverageAnalysis]: Checked inductivity of 71832 backedges. 35695 proven. 21780 refuted. 0 times theorem prover too weak. 14357 trivial. 0 not checked. [2018-10-01 01:13:15,580 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:15,580 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121, 122] total 242 [2018-10-01 01:13:15,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 243 states [2018-10-01 01:13:15,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 243 interpolants. [2018-10-01 01:13:15,583 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:15,583 INFO L87 Difference]: Start difference. First operand 32189 states and 32498 transitions. Second operand 243 states. [2018-10-01 01:13:28,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:28,457 INFO L93 Difference]: Finished difference Result 64639 states and 65261 transitions. [2018-10-01 01:13:28,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 244 states. [2018-10-01 01:13:28,458 INFO L78 Accepts]: Start accepts. Automaton has 243 states. Word has length 659 [2018-10-01 01:13:28,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:28,484 INFO L225 Difference]: With dead ends: 64639 [2018-10-01 01:13:28,484 INFO L226 Difference]: Without dead ends: 32502 [2018-10-01 01:13:28,500 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1018 GetRequests, 538 SyntacticMatches, 0 SemanticMatches, 480 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.9s Time [2018-10-01 01:13:28,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32502 states. [2018-10-01 01:13:29,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32502 to 32192. [2018-10-01 01:13:29,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32192 states. [2018-10-01 01:13:29,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32192 states to 32192 states and 32501 transitions. [2018-10-01 01:13:29,071 INFO L78 Accepts]: Start accepts. Automaton has 32192 states and 32501 transitions. Word has length 659 [2018-10-01 01:13:29,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:29,071 INFO L480 AbstractCegarLoop]: Abstraction has 32192 states and 32501 transitions. [2018-10-01 01:13:29,071 INFO L481 AbstractCegarLoop]: Interpolant automaton has 243 states. [2018-10-01 01:13:29,071 INFO L276 IsEmpty]: Start isEmpty. Operand 32192 states and 32501 transitions. [2018-10-01 01:13:29,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 663 [2018-10-01 01:13:29,089 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:29,089 INFO L375 BasicCegarLoop]: trace histogram [220, 219, 219, 1, 1, 1, 1] [2018-10-01 01:13:29,089 INFO L423 AbstractCegarLoop]: === Iteration 199 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:29,089 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:29,090 INFO L82 PathProgramCache]: Analyzing trace with hash 2081579095, now seen corresponding path program 31 times [2018-10-01 01:13:29,090 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:29,090 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:29,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:29,090 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:13:29,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:29,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:30,267 INFO L134 CoverageAnalysis]: Checked inductivity of 72490 backedges. 36079 proven. 21660 refuted. 0 times theorem prover too weak. 14751 trivial. 0 not checked. [2018-10-01 01:13:30,268 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:30,268 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:30,276 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:13:30,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:30,470 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:31,233 INFO L134 CoverageAnalysis]: Checked inductivity of 72490 backedges. 36079 proven. 21660 refuted. 0 times theorem prover too weak. 14751 trivial. 0 not checked. [2018-10-01 01:13:31,253 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:31,254 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [122, 122] total 122 [2018-10-01 01:13:31,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 123 states [2018-10-01 01:13:31,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2018-10-01 01:13:31,255 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:31,255 INFO L87 Difference]: Start difference. First operand 32192 states and 32501 transitions. Second operand 123 states. [2018-10-01 01:13:33,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:33,342 INFO L93 Difference]: Finished difference Result 64637 states and 65256 transitions. [2018-10-01 01:13:33,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-10-01 01:13:33,343 INFO L78 Accepts]: Start accepts. Automaton has 123 states. Word has length 662 [2018-10-01 01:13:33,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:33,363 INFO L225 Difference]: With dead ends: 64637 [2018-10-01 01:13:33,363 INFO L226 Difference]: Without dead ends: 32500 [2018-10-01 01:13:33,371 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 783 GetRequests, 662 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 01:13:33,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32500 states. [2018-10-01 01:13:33,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32500 to 32493. [2018-10-01 01:13:33,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32493 states. [2018-10-01 01:13:34,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32493 states to 32493 states and 32802 transitions. [2018-10-01 01:13:34,011 INFO L78 Accepts]: Start accepts. Automaton has 32493 states and 32802 transitions. Word has length 662 [2018-10-01 01:13:34,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:34,012 INFO L480 AbstractCegarLoop]: Abstraction has 32493 states and 32802 transitions. [2018-10-01 01:13:34,012 INFO L481 AbstractCegarLoop]: Interpolant automaton has 123 states. [2018-10-01 01:13:34,012 INFO L276 IsEmpty]: Start isEmpty. Operand 32493 states and 32802 transitions. [2018-10-01 01:13:34,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2018-10-01 01:13:34,033 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:34,033 INFO L375 BasicCegarLoop]: trace histogram [221, 220, 220, 1, 1, 1, 1] [2018-10-01 01:13:34,033 INFO L423 AbstractCegarLoop]: === Iteration 200 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:34,033 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:34,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1441503157, now seen corresponding path program 32 times [2018-10-01 01:13:34,034 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:34,034 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:34,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:34,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:13:34,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:34,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:35,068 INFO L134 CoverageAnalysis]: Checked inductivity of 73151 backedges. 36378 proven. 22022 refuted. 0 times theorem prover too weak. 14751 trivial. 0 not checked. [2018-10-01 01:13:35,068 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:35,068 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:35,074 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:13:35,263 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:13:35,263 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:13:35,271 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:36,148 INFO L134 CoverageAnalysis]: Checked inductivity of 73151 backedges. 36378 proven. 22022 refuted. 0 times theorem prover too weak. 14751 trivial. 0 not checked. [2018-10-01 01:13:36,168 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:36,168 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123, 123] total 123 [2018-10-01 01:13:36,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-10-01 01:13:36,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-10-01 01:13:36,170 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:36,170 INFO L87 Difference]: Start difference. First operand 32493 states and 32802 transitions. Second operand 124 states. [2018-10-01 01:13:37,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:37,945 INFO L93 Difference]: Finished difference Result 64640 states and 65259 transitions. [2018-10-01 01:13:37,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-10-01 01:13:37,946 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 665 [2018-10-01 01:13:37,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:37,969 INFO L225 Difference]: With dead ends: 64640 [2018-10-01 01:13:37,969 INFO L226 Difference]: Without dead ends: 32503 [2018-10-01 01:13:37,984 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 787 GetRequests, 665 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 01:13:37,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32503 states. [2018-10-01 01:13:38,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32503 to 32496. [2018-10-01 01:13:38,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32496 states. [2018-10-01 01:13:38,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32496 states to 32496 states and 32805 transitions. [2018-10-01 01:13:38,642 INFO L78 Accepts]: Start accepts. Automaton has 32496 states and 32805 transitions. Word has length 665 [2018-10-01 01:13:38,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:38,643 INFO L480 AbstractCegarLoop]: Abstraction has 32496 states and 32805 transitions. [2018-10-01 01:13:38,643 INFO L481 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-10-01 01:13:38,643 INFO L276 IsEmpty]: Start isEmpty. Operand 32496 states and 32805 transitions. [2018-10-01 01:13:38,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 669 [2018-10-01 01:13:38,664 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:38,664 INFO L375 BasicCegarLoop]: trace histogram [222, 221, 221, 1, 1, 1, 1] [2018-10-01 01:13:38,665 INFO L423 AbstractCegarLoop]: === Iteration 201 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:38,665 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:38,665 INFO L82 PathProgramCache]: Analyzing trace with hash -34819497, now seen corresponding path program 33 times [2018-10-01 01:13:38,665 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:38,665 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:38,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:38,665 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:13:38,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:38,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:39,699 INFO L134 CoverageAnalysis]: Checked inductivity of 73815 backedges. 36722 proven. 22143 refuted. 0 times theorem prover too weak. 14950 trivial. 0 not checked. [2018-10-01 01:13:39,700 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:39,700 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:39,851 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:13:40,895 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 223 check-sat command(s) [2018-10-01 01:13:40,896 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:13:40,904 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:45,733 INFO L134 CoverageAnalysis]: Checked inductivity of 73815 backedges. 36677 proven. 37138 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:45,754 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:45,754 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123, 223] total 346 [2018-10-01 01:13:45,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 347 states [2018-10-01 01:13:45,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 347 interpolants. [2018-10-01 01:13:45,760 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:45,760 INFO L87 Difference]: Start difference. First operand 32496 states and 32805 transitions. Second operand 347 states. [2018-10-01 01:14:01,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:14:01,361 INFO L93 Difference]: Finished difference Result 64643 states and 65263 transitions. [2018-10-01 01:14:01,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 248 states. [2018-10-01 01:14:01,362 INFO L78 Accepts]: Start accepts. Automaton has 347 states. Word has length 668 [2018-10-01 01:14:01,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:14:01,385 INFO L225 Difference]: With dead ends: 64643 [2018-10-01 01:14:01,386 INFO L226 Difference]: Without dead ends: 32506 [2018-10-01 01:14:01,403 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1034 GetRequests, 445 SyntacticMatches, 0 SemanticMatches, 589 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.7s Time [2018-10-01 01:14:01,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32506 states. [2018-10-01 01:14:02,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32506 to 32499. [2018-10-01 01:14:02,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32499 states. [2018-10-01 01:14:02,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32499 states to 32499 states and 32808 transitions. [2018-10-01 01:14:02,066 INFO L78 Accepts]: Start accepts. Automaton has 32499 states and 32808 transitions. Word has length 668 [2018-10-01 01:14:02,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:14:02,067 INFO L480 AbstractCegarLoop]: Abstraction has 32499 states and 32808 transitions. [2018-10-01 01:14:02,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has 347 states. [2018-10-01 01:14:02,067 INFO L276 IsEmpty]: Start isEmpty. Operand 32499 states and 32808 transitions. [2018-10-01 01:14:02,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 672 [2018-10-01 01:14:02,088 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:14:02,088 INFO L375 BasicCegarLoop]: trace histogram [223, 222, 222, 1, 1, 1, 1] [2018-10-01 01:14:02,088 INFO L423 AbstractCegarLoop]: === Iteration 202 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:14:02,088 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:14:02,088 INFO L82 PathProgramCache]: Analyzing trace with hash -646057141, now seen corresponding path program 34 times [2018-10-01 01:14:02,089 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:14:02,089 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:14:02,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:02,089 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:14:02,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:02,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:03,339 INFO L134 CoverageAnalysis]: Checked inductivity of 74482 backedges. 37023 proven. 22509 refuted. 0 times theorem prover too weak. 14950 trivial. 0 not checked. [2018-10-01 01:14:03,339 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:03,339 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:03,346 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:14:03,540 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:14:03,540 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:14:03,547 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:04,345 INFO L134 CoverageAnalysis]: Checked inductivity of 74482 backedges. 37023 proven. 22509 refuted. 0 times theorem prover too weak. 14950 trivial. 0 not checked. [2018-10-01 01:14:04,365 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:04,365 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [124, 124] total 124 [2018-10-01 01:14:04,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-10-01 01:14:04,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-10-01 01:14:04,367 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:04,367 INFO L87 Difference]: Start difference. First operand 32499 states and 32808 transitions. Second operand 125 states. [2018-10-01 01:14:05,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:14:05,970 INFO L93 Difference]: Finished difference Result 64644 states and 65263 transitions. [2018-10-01 01:14:05,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-10-01 01:14:05,970 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 671 [2018-10-01 01:14:05,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:14:05,995 INFO L225 Difference]: With dead ends: 64644 [2018-10-01 01:14:05,995 INFO L226 Difference]: Without dead ends: 32507 [2018-10-01 01:14:06,011 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 794 GetRequests, 671 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 01:14:06,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32507 states. [2018-10-01 01:14:06,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32507 to 32499. [2018-10-01 01:14:06,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32499 states. [2018-10-01 01:14:06,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32499 states to 32499 states and 32808 transitions. [2018-10-01 01:14:06,876 INFO L78 Accepts]: Start accepts. Automaton has 32499 states and 32808 transitions. Word has length 671 [2018-10-01 01:14:06,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:14:06,876 INFO L480 AbstractCegarLoop]: Abstraction has 32499 states and 32808 transitions. [2018-10-01 01:14:06,876 INFO L481 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-10-01 01:14:06,876 INFO L276 IsEmpty]: Start isEmpty. Operand 32499 states and 32808 transitions. [2018-10-01 01:14:06,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 672 [2018-10-01 01:14:06,897 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:14:06,897 INFO L375 BasicCegarLoop]: trace histogram [223, 222, 222, 1, 1, 1, 1] [2018-10-01 01:14:06,897 INFO L423 AbstractCegarLoop]: === Iteration 203 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:14:06,898 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:14:06,898 INFO L82 PathProgramCache]: Analyzing trace with hash -2080297781, now seen corresponding path program 35 times [2018-10-01 01:14:06,898 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:14:06,898 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:14:06,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:06,898 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:14:06,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:07,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:08,050 INFO L134 CoverageAnalysis]: Checked inductivity of 74482 backedges. 36976 proven. 22755 refuted. 0 times theorem prover too weak. 14751 trivial. 0 not checked. [2018-10-01 01:14:08,051 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:08,051 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:08,058 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:14:09,005 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 224 check-sat command(s) [2018-10-01 01:14:09,006 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:14:09,013 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:11,106 INFO L134 CoverageAnalysis]: Checked inductivity of 74482 backedges. 36875 proven. 23250 refuted. 0 times theorem prover too weak. 14357 trivial. 0 not checked. [2018-10-01 01:14:11,127 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:11,128 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125, 126] total 250 [2018-10-01 01:14:11,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 251 states [2018-10-01 01:14:11,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 251 interpolants. [2018-10-01 01:14:11,131 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:11,131 INFO L87 Difference]: Start difference. First operand 32499 states and 32808 transitions. Second operand 251 states. [2018-10-01 01:14:24,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:14:24,114 INFO L93 Difference]: Finished difference Result 64651 states and 65274 transitions. [2018-10-01 01:14:24,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 252 states. [2018-10-01 01:14:24,115 INFO L78 Accepts]: Start accepts. Automaton has 251 states. Word has length 671 [2018-10-01 01:14:24,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:14:24,136 INFO L225 Difference]: With dead ends: 64651 [2018-10-01 01:14:24,136 INFO L226 Difference]: Without dead ends: 32514 [2018-10-01 01:14:24,153 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1042 GetRequests, 546 SyntacticMatches, 0 SemanticMatches, 496 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.0s Time [2018-10-01 01:14:24,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32514 states. [2018-10-01 01:14:24,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32514 to 32204. [2018-10-01 01:14:24,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32204 states. [2018-10-01 01:14:24,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32204 states to 32204 states and 32513 transitions. [2018-10-01 01:14:24,704 INFO L78 Accepts]: Start accepts. Automaton has 32204 states and 32513 transitions. Word has length 671 [2018-10-01 01:14:24,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:14:24,704 INFO L480 AbstractCegarLoop]: Abstraction has 32204 states and 32513 transitions. [2018-10-01 01:14:24,704 INFO L481 AbstractCegarLoop]: Interpolant automaton has 251 states. [2018-10-01 01:14:24,705 INFO L276 IsEmpty]: Start isEmpty. Operand 32204 states and 32513 transitions. [2018-10-01 01:14:24,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 675 [2018-10-01 01:14:24,723 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:14:24,723 INFO L375 BasicCegarLoop]: trace histogram [224, 223, 223, 1, 1, 1, 1] [2018-10-01 01:14:24,723 INFO L423 AbstractCegarLoop]: === Iteration 204 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:14:24,723 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:14:24,723 INFO L82 PathProgramCache]: Analyzing trace with hash -799615145, now seen corresponding path program 36 times [2018-10-01 01:14:24,723 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:14:24,724 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:14:24,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:24,724 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:14:24,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:24,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:25,872 INFO L134 CoverageAnalysis]: Checked inductivity of 75152 backedges. 37275 proven. 23126 refuted. 0 times theorem prover too weak. 14751 trivial. 0 not checked. [2018-10-01 01:14:25,872 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:25,872 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:25,879 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:14:26,737 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 223 check-sat command(s) [2018-10-01 01:14:26,737 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:14:26,744 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:28,857 INFO L134 CoverageAnalysis]: Checked inductivity of 75152 backedges. 37170 proven. 23625 refuted. 0 times theorem prover too weak. 14357 trivial. 0 not checked. [2018-10-01 01:14:28,878 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:28,878 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [126, 127] total 252 [2018-10-01 01:14:28,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 253 states [2018-10-01 01:14:28,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 253 interpolants. [2018-10-01 01:14:28,881 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:28,881 INFO L87 Difference]: Start difference. First operand 32204 states and 32513 transitions. Second operand 253 states. [2018-10-01 01:14:41,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:14:41,989 INFO L93 Difference]: Finished difference Result 64654 states and 65276 transitions. [2018-10-01 01:14:41,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 254 states. [2018-10-01 01:14:41,990 INFO L78 Accepts]: Start accepts. Automaton has 253 states. Word has length 674 [2018-10-01 01:14:41,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:14:42,008 INFO L225 Difference]: With dead ends: 64654 [2018-10-01 01:14:42,009 INFO L226 Difference]: Without dead ends: 32517 [2018-10-01 01:14:42,016 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1048 GetRequests, 548 SyntacticMatches, 0 SemanticMatches, 500 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.8s Time [2018-10-01 01:14:42,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32517 states. [2018-10-01 01:14:42,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32517 to 32207. [2018-10-01 01:14:42,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32207 states. [2018-10-01 01:14:42,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32207 states to 32207 states and 32516 transitions. [2018-10-01 01:14:42,663 INFO L78 Accepts]: Start accepts. Automaton has 32207 states and 32516 transitions. Word has length 674 [2018-10-01 01:14:42,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:14:42,663 INFO L480 AbstractCegarLoop]: Abstraction has 32207 states and 32516 transitions. [2018-10-01 01:14:42,663 INFO L481 AbstractCegarLoop]: Interpolant automaton has 253 states. [2018-10-01 01:14:42,663 INFO L276 IsEmpty]: Start isEmpty. Operand 32207 states and 32516 transitions. [2018-10-01 01:14:42,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 678 [2018-10-01 01:14:42,684 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:14:42,684 INFO L375 BasicCegarLoop]: trace histogram [225, 224, 224, 1, 1, 1, 1] [2018-10-01 01:14:42,684 INFO L423 AbstractCegarLoop]: === Iteration 205 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:14:42,685 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:14:42,685 INFO L82 PathProgramCache]: Analyzing trace with hash -177696437, now seen corresponding path program 37 times [2018-10-01 01:14:42,685 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:14:42,685 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:14:42,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:42,685 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:14:42,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:42,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:43,905 INFO L134 CoverageAnalysis]: Checked inductivity of 75825 backedges. 37574 proven. 23500 refuted. 0 times theorem prover too weak. 14751 trivial. 0 not checked. [2018-10-01 01:14:43,905 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:43,905 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:43,913 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:14:44,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:44,113 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:45,056 INFO L134 CoverageAnalysis]: Checked inductivity of 75825 backedges. 37574 proven. 23500 refuted. 0 times theorem prover too weak. 14751 trivial. 0 not checked. [2018-10-01 01:14:45,077 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:45,078 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127, 127] total 127 [2018-10-01 01:14:45,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-10-01 01:14:45,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-10-01 01:14:45,080 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:45,080 INFO L87 Difference]: Start difference. First operand 32207 states and 32516 transitions. Second operand 128 states. [2018-10-01 01:14:47,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:14:47,081 INFO L93 Difference]: Finished difference Result 64652 states and 65271 transitions. [2018-10-01 01:14:47,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-10-01 01:14:47,081 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 677 [2018-10-01 01:14:47,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:14:47,102 INFO L225 Difference]: With dead ends: 64652 [2018-10-01 01:14:47,102 INFO L226 Difference]: Without dead ends: 32515 [2018-10-01 01:14:47,117 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 803 GetRequests, 677 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 01:14:47,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32515 states. [2018-10-01 01:14:47,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32515 to 32508. [2018-10-01 01:14:47,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32508 states. [2018-10-01 01:14:47,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32508 states to 32508 states and 32817 transitions. [2018-10-01 01:14:47,915 INFO L78 Accepts]: Start accepts. Automaton has 32508 states and 32817 transitions. Word has length 677 [2018-10-01 01:14:47,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:14:47,915 INFO L480 AbstractCegarLoop]: Abstraction has 32508 states and 32817 transitions. [2018-10-01 01:14:47,915 INFO L481 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-10-01 01:14:47,916 INFO L276 IsEmpty]: Start isEmpty. Operand 32508 states and 32817 transitions. [2018-10-01 01:14:47,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 681 [2018-10-01 01:14:47,938 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:14:47,938 INFO L375 BasicCegarLoop]: trace histogram [226, 225, 225, 1, 1, 1, 1] [2018-10-01 01:14:47,938 INFO L423 AbstractCegarLoop]: === Iteration 206 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:14:47,938 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:14:47,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1086381353, now seen corresponding path program 38 times [2018-10-01 01:14:47,938 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:14:47,938 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:14:47,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:47,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:14:47,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:48,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:49,284 INFO L134 CoverageAnalysis]: Checked inductivity of 76501 backedges. 37873 proven. 23877 refuted. 0 times theorem prover too weak. 14751 trivial. 0 not checked. [2018-10-01 01:14:49,284 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:49,284 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:49,290 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:14:49,480 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:14:49,480 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:14:49,487 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:50,294 INFO L134 CoverageAnalysis]: Checked inductivity of 76501 backedges. 37873 proven. 23877 refuted. 0 times theorem prover too weak. 14751 trivial. 0 not checked. [2018-10-01 01:14:50,315 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:50,315 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [128, 128] total 128 [2018-10-01 01:14:50,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 129 states [2018-10-01 01:14:50,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2018-10-01 01:14:50,317 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:50,317 INFO L87 Difference]: Start difference. First operand 32508 states and 32817 transitions. Second operand 129 states. [2018-10-01 01:14:52,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:14:52,311 INFO L93 Difference]: Finished difference Result 64655 states and 65274 transitions. [2018-10-01 01:14:52,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-10-01 01:14:52,312 INFO L78 Accepts]: Start accepts. Automaton has 129 states. Word has length 680 [2018-10-01 01:14:52,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:14:52,333 INFO L225 Difference]: With dead ends: 64655 [2018-10-01 01:14:52,333 INFO L226 Difference]: Without dead ends: 32518 [2018-10-01 01:14:52,346 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 807 GetRequests, 680 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 01:14:52,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32518 states. [2018-10-01 01:14:53,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32518 to 32511. [2018-10-01 01:14:53,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32511 states. [2018-10-01 01:14:53,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32511 states to 32511 states and 32820 transitions. [2018-10-01 01:14:53,317 INFO L78 Accepts]: Start accepts. Automaton has 32511 states and 32820 transitions. Word has length 680 [2018-10-01 01:14:53,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:14:53,317 INFO L480 AbstractCegarLoop]: Abstraction has 32511 states and 32820 transitions. [2018-10-01 01:14:53,317 INFO L481 AbstractCegarLoop]: Interpolant automaton has 129 states. [2018-10-01 01:14:53,317 INFO L276 IsEmpty]: Start isEmpty. Operand 32511 states and 32820 transitions. [2018-10-01 01:14:53,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 684 [2018-10-01 01:14:53,336 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:14:53,336 INFO L375 BasicCegarLoop]: trace histogram [227, 226, 226, 1, 1, 1, 1] [2018-10-01 01:14:53,336 INFO L423 AbstractCegarLoop]: === Iteration 207 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:14:53,336 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:14:53,337 INFO L82 PathProgramCache]: Analyzing trace with hash 894393419, now seen corresponding path program 39 times [2018-10-01 01:14:53,337 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:14:53,337 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:14:53,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:53,337 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:14:53,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:53,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:54,446 INFO L134 CoverageAnalysis]: Checked inductivity of 77180 backedges. 38227 proven. 24003 refuted. 0 times theorem prover too weak. 14950 trivial. 0 not checked. [2018-10-01 01:14:54,446 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:54,446 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:54,455 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:14:55,541 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 228 check-sat command(s) [2018-10-01 01:14:55,541 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:14:55,550 INFO L273 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2018-10-01 01:14:57,649 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-01 01:14:57,850 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 205 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:57,851 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-01 01:14:57,857 WARN L206 ceAbstractionStarter]: Timeout [2018-10-01 01:14:57,857 INFO L202 PluginConnector]: Adding new model HiddenEqualityWithBranches.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.10 01:14:57 BoogieIcfgContainer [2018-10-01 01:14:57,857 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-01 01:14:57,858 INFO L168 Benchmark]: Toolchain (without parser) took 772136.01 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -47.6 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-10-01 01:14:57,860 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-01 01:14:57,860 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.73 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-01 01:14:57,861 INFO L168 Benchmark]: Boogie Preprocessor took 20.14 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-01 01:14:57,861 INFO L168 Benchmark]: RCFGBuilder took 284.50 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-01 01:14:57,861 INFO L168 Benchmark]: TraceAbstraction took 771785.91 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -68.7 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-10-01 01:14:57,863 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 39.73 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 20.14 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 284.50 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 771785.91 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -68.7 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 30]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 30). Cancelled while BasicCegarLoop was analyzing trace of length 684 with TraceHistMax 227, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. TIMEOUT Result, 771.7s OverallTime, 207 OverallIterations, 227 TraceHistogramMax, 469.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1884 SDtfs, 6130 SDslu, 82377 SDs, 0 SdLazy, 67346 SolverSat, 4304 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 66.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67868 GetRequests, 45861 SyntacticMatches, 2 SemanticMatches, 22005 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 359.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32511occurred in iteration=206, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 21.0s AutomataMinimizationTime, 206 MinimizatonAttempts, 2567 StatesRemovedByMinimization, 35 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 2.0s SsaConstructionTime, 34.6s SatisfiabilityAnalysisTime, 219.5s InterpolantComputationTime, 98528 NumberOfCodeBlocks, 97014 NumberOfCodeBlocksAsserted, 7890 NumberOfCheckSat, 98119 ConstructedInterpolants, 0 QuantifiedInterpolants, 94858087 SizeOfPredicates, 0 NumberOfNonLiveVariables, 111930 ConjunctsInSsa, 13198 ConjunctsInUnsatCore, 409 InterpolantComputations, 4 PerfectInterpolantSequences, 3464838/6593540 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/HiddenEqualityWithBranches.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-01_01-14-57-874.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/HiddenEqualityWithBranches.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-01_01-14-57-874.csv Completed graceful shutdown