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/Luxembourg-ArraysIntegefied.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-133090d [2018-10-04 09:50:28,764 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-04 09:50:28,766 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-04 09:50:28,779 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-04 09:50:28,779 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-04 09:50:28,780 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-04 09:50:28,781 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-04 09:50:28,783 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-04 09:50:28,784 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-04 09:50:28,785 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-04 09:50:28,786 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-04 09:50:28,812 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 [2018-10-04 09:50:28,841 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-04 09:50:28,841 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-04 09:50:28,843 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-04 09:50:28,844 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-04 09:50:28,844 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-04 09:50:28,845 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-04 09:50:28,846 INFO L133 SettingsManager]: * Use SBE=true [2018-10-04 09:50:28,846 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-04 09:50:28,846 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-04 09:50:28,846 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-04 09:50:28,846 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-04 09:50:28,847 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-04 09:50:28,847 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-04 09:50:28,847 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-04 09:50:28,847 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-04 09:50:28,847 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-04 09:50:28,847 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-04 09:50:28,848 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-04 09:50:28,848 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-04 09:50:28,849 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-04 09:50:28,849 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-04 09:50:28,849 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-04 09:50:28,849 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-04 09:50:28,849 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-04 09:50:28,850 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-04 09:50:28,850 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-04 09:50:28,850 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-04 09:50:28,850 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-04 09:50:28,850 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-04 09:50:28,850 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-04 09:50:28,851 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-04 09:50:28,908 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-04 09:50:28,921 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-04 09:50:28,927 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-04 09:50:28,928 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-04 09:50:28,929 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-04 09:50:28,930 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Luxembourg-ArraysIntegefied.bpl [2018-10-04 09:50:28,930 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Luxembourg-ArraysIntegefied.bpl' [2018-10-04 09:50:28,986 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-04 09:50:28,988 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-04 09:50:28,989 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-04 09:50:28,989 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-04 09:50:28,989 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-04 09:50:29,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:50:28" (1/1) ... [2018-10-04 09:50:29,025 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:50:28" (1/1) ... [2018-10-04 09:50:29,030 WARN L165 Inliner]: Program contained no entry procedure! [2018-10-04 09:50:29,031 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-10-04 09:50:29,031 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-10-04 09:50:29,033 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-04 09:50:29,034 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-04 09:50:29,034 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-04 09:50:29,034 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-04 09:50:29,047 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:50:28" (1/1) ... [2018-10-04 09:50:29,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:50:28" (1/1) ... [2018-10-04 09:50:29,048 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:50:28" (1/1) ... [2018-10-04 09:50:29,048 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:50:28" (1/1) ... [2018-10-04 09:50:29,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:50:28" (1/1) ... [2018-10-04 09:50:29,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:50:28" (1/1) ... [2018-10-04 09:50:29,060 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:50:28" (1/1) ... [2018-10-04 09:50:29,062 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-04 09:50:29,063 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-04 09:50:29,063 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-04 09:50:29,063 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-04 09:50:29,064 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:50:28" (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 [2018-10-04 09:50:29,140 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2018-10-04 09:50:29,141 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-04 09:50:29,141 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-04 09:50:29,340 INFO L338 CfgBuilder]: Using library mode [2018-10-04 09:50:29,341 INFO L202 PluginConnector]: Adding new model Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 09:50:29 BoogieIcfgContainer [2018-10-04 09:50:29,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-04 09:50:29,342 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-04 09:50:29,342 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-04 09:50:29,345 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-04 09:50:29,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:50:28" (1/2) ... [2018-10-04 09:50:29,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21730911 and model type Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 09:50:29, skipping insertion in model container [2018-10-04 09:50:29,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 09:50:29" (2/2) ... [2018-10-04 09:50:29,349 INFO L112 eAbstractionObserver]: Analyzing ICFG Luxembourg-ArraysIntegefied.bpl [2018-10-04 09:50:29,358 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-04 09:50:29,367 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-04 09:50:29,412 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-04 09:50:29,412 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-04 09:50:29,413 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-04 09:50:29,413 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-04 09:50:29,413 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-04 09:50:29,413 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-04 09:50:29,413 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-04 09:50:29,414 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-04 09:50:29,414 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-04 09:50:29,429 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2018-10-04 09:50:29,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-04 09:50:29,436 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:50:29,437 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-10-04 09:50:29,438 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:50:29,445 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:50:29,446 INFO L82 PathProgramCache]: Analyzing trace with hash 890493448, now seen corresponding path program 1 times [2018-10-04 09:50:29,447 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:50:29,448 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:50:29,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:29,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:50:29,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:29,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:50:29,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:29,584 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-04 09:50:29,584 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-04 09:50:29,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-04 09:50:29,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-04 09:50:29,602 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:50:29,604 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2018-10-04 09:50:29,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:50:29,705 INFO L93 Difference]: Finished difference Result 22 states and 31 transitions. [2018-10-04 09:50:29,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-04 09:50:29,708 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2018-10-04 09:50:29,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:50:29,737 INFO L225 Difference]: With dead ends: 22 [2018-10-04 09:50:29,737 INFO L226 Difference]: Without dead ends: 10 [2018-10-04 09:50:29,741 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 1 [2018-10-04 09:50:29,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-10-04 09:50:29,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-10-04 09:50:29,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-10-04 09:50:29,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-10-04 09:50:29,781 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 6 [2018-10-04 09:50:29,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:50:29,782 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-10-04 09:50:29,782 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-04 09:50:29,782 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-10-04 09:50:29,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-04 09:50:29,783 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:50:29,783 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-10-04 09:50:29,783 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:50:29,784 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:50:29,784 INFO L82 PathProgramCache]: Analyzing trace with hash 892342412, now seen corresponding path program 1 times [2018-10-04 09:50:29,784 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:50:29,784 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:50:29,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:29,785 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:50:29,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:29,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:50:29,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:29,835 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-04 09:50:29,835 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-04 09:50:29,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-04 09:50:29,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-04 09:50:29,837 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:50:29,838 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 3 states. [2018-10-04 09:50:29,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:50:29,855 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-10-04 09:50:29,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-04 09:50:29,856 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2018-10-04 09:50:29,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:50:29,856 INFO L225 Difference]: With dead ends: 13 [2018-10-04 09:50:29,857 INFO L226 Difference]: Without dead ends: 11 [2018-10-04 09:50:29,857 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 1 [2018-10-04 09:50:29,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-04 09:50:29,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-04 09:50:29,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-04 09:50:29,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-10-04 09:50:29,861 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 6 [2018-10-04 09:50:29,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:50:29,861 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-10-04 09:50:29,861 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-04 09:50:29,861 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-10-04 09:50:29,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-04 09:50:29,862 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:50:29,862 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-04 09:50:29,862 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:50:29,863 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:50:29,863 INFO L82 PathProgramCache]: Analyzing trace with hash -391235530, now seen corresponding path program 1 times [2018-10-04 09:50:29,863 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:50:29,863 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:50:29,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:29,864 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:50:29,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:29,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:50:29,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:29,940 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:50:29,940 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 [2018-10-04 09:50:29,953 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:50:29,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:50:29,977 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:50:30,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:30,082 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:50:30,082 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-10-04 09:50:30,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-04 09:50:30,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-04 09:50:30,083 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:50:30,083 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 4 states. [2018-10-04 09:50:30,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:50:30,125 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-10-04 09:50:30,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-04 09:50:30,126 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-10-04 09:50:30,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:50:30,126 INFO L225 Difference]: With dead ends: 17 [2018-10-04 09:50:30,127 INFO L226 Difference]: Without dead ends: 15 [2018-10-04 09:50:30,127 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 2 [2018-10-04 09:50:30,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-04 09:50:30,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-10-04 09:50:30,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-04 09:50:30,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-10-04 09:50:30,130 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 10 [2018-10-04 09:50:30,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:50:30,131 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-10-04 09:50:30,131 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-04 09:50:30,131 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-10-04 09:50:30,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-04 09:50:30,132 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:50:30,132 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-10-04 09:50:30,132 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:50:30,133 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:50:30,133 INFO L82 PathProgramCache]: Analyzing trace with hash -602113312, now seen corresponding path program 2 times [2018-10-04 09:50:30,133 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:50:30,133 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:50:30,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:30,135 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:50:30,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:30,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:50:30,273 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:30,273 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:50:30,273 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 [2018-10-04 09:50:30,293 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:50:30,309 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:50:30,310 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:50:30,312 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:50:30,468 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:30,495 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:50:30,495 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-04 09:50:30,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-04 09:50:30,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-04 09:50:30,496 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:50:30,496 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 5 states. [2018-10-04 09:50:30,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:50:30,583 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-10-04 09:50:30,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-04 09:50:30,583 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-10-04 09:50:30,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:50:30,584 INFO L225 Difference]: With dead ends: 21 [2018-10-04 09:50:30,584 INFO L226 Difference]: Without dead ends: 19 [2018-10-04 09:50:30,585 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 3 [2018-10-04 09:50:30,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-04 09:50:30,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-04 09:50:30,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-04 09:50:30,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-10-04 09:50:30,588 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 14 [2018-10-04 09:50:30,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:50:30,589 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-10-04 09:50:30,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-04 09:50:30,589 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-10-04 09:50:30,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-04 09:50:30,590 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:50:30,590 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2018-10-04 09:50:30,591 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:50:30,591 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:50:30,591 INFO L82 PathProgramCache]: Analyzing trace with hash 334846090, now seen corresponding path program 3 times [2018-10-04 09:50:30,591 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:50:30,591 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:50:30,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:30,593 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:50:30,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:30,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:50:30,749 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:30,749 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:50:30,749 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) [2018-10-04 09:50:30,764 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:50:30,797 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-04 09:50:30,797 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:50:30,799 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:50:30,884 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:30,906 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:50:30,906 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-04 09:50:30,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-04 09:50:30,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-04 09:50:30,907 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:50:30,907 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 6 states. [2018-10-04 09:50:30,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:50:30,932 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-10-04 09:50:30,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-04 09:50:30,932 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-10-04 09:50:30,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:50:30,933 INFO L225 Difference]: With dead ends: 25 [2018-10-04 09:50:30,933 INFO L226 Difference]: Without dead ends: 23 [2018-10-04 09:50:30,934 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 4 [2018-10-04 09:50:30,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-04 09:50:30,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-04 09:50:30,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-04 09:50:30,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-10-04 09:50:30,940 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 18 [2018-10-04 09:50:30,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:50:30,941 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-10-04 09:50:30,941 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-04 09:50:30,942 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-10-04 09:50:30,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-04 09:50:30,943 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:50:30,943 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2018-10-04 09:50:30,943 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:50:30,943 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:50:30,943 INFO L82 PathProgramCache]: Analyzing trace with hash -747417292, now seen corresponding path program 4 times [2018-10-04 09:50:30,944 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:50:30,944 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:50:30,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:30,945 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:50:30,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:30,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:50:31,043 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:31,044 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:50:31,044 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 [2018-10-04 09:50:31,057 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:50:31,072 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:50:31,073 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:50:31,074 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:50:31,279 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:31,304 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:50:31,305 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-04 09:50:31,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-04 09:50:31,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-04 09:50:31,305 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:50:31,306 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 7 states. [2018-10-04 09:50:31,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:50:31,326 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-10-04 09:50:31,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-04 09:50:31,326 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2018-10-04 09:50:31,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:50:31,327 INFO L225 Difference]: With dead ends: 29 [2018-10-04 09:50:31,327 INFO L226 Difference]: Without dead ends: 27 [2018-10-04 09:50:31,328 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 5 [2018-10-04 09:50:31,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-04 09:50:31,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-10-04 09:50:31,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-10-04 09:50:31,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-10-04 09:50:31,333 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 22 [2018-10-04 09:50:31,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:50:31,333 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-10-04 09:50:31,333 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-04 09:50:31,334 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-10-04 09:50:31,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-04 09:50:31,334 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:50:31,335 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2018-10-04 09:50:31,335 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:50:31,335 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:50:31,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1016128734, now seen corresponding path program 5 times [2018-10-04 09:50:31,335 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:50:31,336 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:50:31,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:31,337 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:50:31,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:31,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:50:31,468 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:31,468 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:50:31,468 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:50:31,476 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:50:31,495 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-10-04 09:50:31,495 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:50:31,498 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:50:31,674 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:31,710 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:50:31,711 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-04 09:50:31,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-04 09:50:31,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-04 09:50:31,712 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:50:31,712 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 8 states. [2018-10-04 09:50:31,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:50:31,882 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-10-04 09:50:31,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-04 09:50:31,883 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2018-10-04 09:50:31,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:50:31,884 INFO L225 Difference]: With dead ends: 33 [2018-10-04 09:50:31,884 INFO L226 Difference]: Without dead ends: 31 [2018-10-04 09:50:31,885 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 6 [2018-10-04 09:50:31,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-04 09:50:31,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-04 09:50:31,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-04 09:50:31,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-10-04 09:50:31,889 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 26 [2018-10-04 09:50:31,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:50:31,890 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-10-04 09:50:31,890 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-04 09:50:31,890 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-10-04 09:50:31,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-04 09:50:31,891 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:50:31,891 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2018-10-04 09:50:31,892 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:50:31,892 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:50:31,892 INFO L82 PathProgramCache]: Analyzing trace with hash -267873400, now seen corresponding path program 6 times [2018-10-04 09:50:31,892 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:50:31,892 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:50:31,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:31,893 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:50:31,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:31,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:50:32,094 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:32,095 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:50:32,095 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 [2018-10-04 09:50:32,103 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:50:32,142 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-04 09:50:32,142 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:50:32,145 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:50:32,592 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:32,616 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:50:32,616 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-04 09:50:32,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-04 09:50:32,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-04 09:50:32,617 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:50:32,618 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 9 states. [2018-10-04 09:50:32,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:50:32,685 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-10-04 09:50:32,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-04 09:50:32,685 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2018-10-04 09:50:32,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:50:32,686 INFO L225 Difference]: With dead ends: 37 [2018-10-04 09:50:32,687 INFO L226 Difference]: Without dead ends: 35 [2018-10-04 09:50:32,687 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.1s impTime 7 [2018-10-04 09:50:32,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-04 09:50:32,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-10-04 09:50:32,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-04 09:50:32,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-10-04 09:50:32,691 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 30 [2018-10-04 09:50:32,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:50:32,692 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-10-04 09:50:32,692 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-04 09:50:32,692 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-10-04 09:50:32,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-04 09:50:32,693 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:50:32,693 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2018-10-04 09:50:32,693 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:50:32,693 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:50:32,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1386947278, now seen corresponding path program 7 times [2018-10-04 09:50:32,694 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:50:32,694 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:50:32,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:32,695 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:50:32,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:32,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:50:32,863 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:32,863 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:50:32,863 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 [2018-10-04 09:50:32,879 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:50:32,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:50:32,903 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:50:33,020 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:33,043 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:50:33,043 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-04 09:50:33,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-04 09:50:33,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-04 09:50:33,044 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:50:33,045 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 10 states. [2018-10-04 09:50:33,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:50:33,095 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-10-04 09:50:33,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-04 09:50:33,096 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2018-10-04 09:50:33,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:50:33,098 INFO L225 Difference]: With dead ends: 41 [2018-10-04 09:50:33,098 INFO L226 Difference]: Without dead ends: 39 [2018-10-04 09:50:33,098 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 8 [2018-10-04 09:50:33,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-04 09:50:33,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-10-04 09:50:33,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-04 09:50:33,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-10-04 09:50:33,103 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 34 [2018-10-04 09:50:33,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:50:33,103 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-10-04 09:50:33,103 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-04 09:50:33,103 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-10-04 09:50:33,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-04 09:50:33,104 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:50:33,105 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2018-10-04 09:50:33,105 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:50:33,105 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:50:33,105 INFO L82 PathProgramCache]: Analyzing trace with hash -223329828, now seen corresponding path program 8 times [2018-10-04 09:50:33,105 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:50:33,106 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:50:33,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:33,107 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:50:33,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:33,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:50:33,303 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:33,303 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:50:33,303 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:50:33,315 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:50:33,336 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:50:33,337 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:50:33,339 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:50:33,446 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:33,468 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:50:33,468 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-04 09:50:33,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-04 09:50:33,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-04 09:50:33,469 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:50:33,469 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 11 states. [2018-10-04 09:50:33,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:50:33,506 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-10-04 09:50:33,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-04 09:50:33,507 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2018-10-04 09:50:33,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:50:33,508 INFO L225 Difference]: With dead ends: 45 [2018-10-04 09:50:33,508 INFO L226 Difference]: Without dead ends: 43 [2018-10-04 09:50:33,509 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 9 [2018-10-04 09:50:33,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-04 09:50:33,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-10-04 09:50:33,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-04 09:50:33,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-10-04 09:50:33,514 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 38 [2018-10-04 09:50:33,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:50:33,514 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-10-04 09:50:33,514 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-04 09:50:33,515 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-10-04 09:50:33,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-04 09:50:33,516 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:50:33,516 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 1, 1, 1, 1, 1, 1] [2018-10-04 09:50:33,516 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:50:33,516 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:50:33,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1659551354, now seen corresponding path program 9 times [2018-10-04 09:50:33,517 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:50:33,517 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:50:33,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:33,518 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:50:33,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:33,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:50:33,682 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:33,682 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:50:33,682 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 [2018-10-04 09:50:33,690 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:50:33,718 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-10-04 09:50:33,719 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:50:33,722 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:50:33,829 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:33,849 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:50:33,850 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-10-04 09:50:33,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-04 09:50:33,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-04 09:50:33,850 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:50:33,851 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 12 states. [2018-10-04 09:50:34,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:50:34,002 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-10-04 09:50:34,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-04 09:50:34,003 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 42 [2018-10-04 09:50:34,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:50:34,003 INFO L225 Difference]: With dead ends: 49 [2018-10-04 09:50:34,004 INFO L226 Difference]: Without dead ends: 47 [2018-10-04 09:50:34,004 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 10 [2018-10-04 09:50:34,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-04 09:50:34,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-04 09:50:34,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-04 09:50:34,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-10-04 09:50:34,010 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 42 [2018-10-04 09:50:34,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:50:34,010 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-10-04 09:50:34,010 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-04 09:50:34,010 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-10-04 09:50:34,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-04 09:50:34,011 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:50:34,012 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2018-10-04 09:50:34,012 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:50:34,012 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:50:34,012 INFO L82 PathProgramCache]: Analyzing trace with hash -2009179088, now seen corresponding path program 10 times [2018-10-04 09:50:34,012 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:50:34,013 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:50:34,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:34,014 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:50:34,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:34,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:50:34,170 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:34,170 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:50:34,170 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 [2018-10-04 09:50:34,183 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:50:34,194 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:50:34,195 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:50:34,197 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:50:34,327 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:34,347 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:50:34,347 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-10-04 09:50:34,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-04 09:50:34,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-04 09:50:34,348 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:50:34,348 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 13 states. [2018-10-04 09:50:34,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:50:34,420 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-10-04 09:50:34,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-04 09:50:34,423 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 46 [2018-10-04 09:50:34,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:50:34,424 INFO L225 Difference]: With dead ends: 53 [2018-10-04 09:50:34,424 INFO L226 Difference]: Without dead ends: 51 [2018-10-04 09:50:34,424 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 11 [2018-10-04 09:50:34,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-04 09:50:34,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-04 09:50:34,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-04 09:50:34,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-10-04 09:50:34,429 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 46 [2018-10-04 09:50:34,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:50:34,429 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-10-04 09:50:34,429 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-04 09:50:34,430 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-10-04 09:50:34,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-04 09:50:34,431 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:50:34,431 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 1, 1, 1, 1, 1, 1] [2018-10-04 09:50:34,431 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:50:34,431 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:50:34,431 INFO L82 PathProgramCache]: Analyzing trace with hash 782635482, now seen corresponding path program 11 times [2018-10-04 09:50:34,432 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:50:34,432 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:50:34,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:34,433 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:50:34,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:34,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:50:34,618 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:34,619 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:50:34,619 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 [2018-10-04 09:50:34,626 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:50:34,643 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-10-04 09:50:34,643 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:50:34,646 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:50:34,863 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:34,884 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:50:34,884 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-10-04 09:50:34,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-04 09:50:34,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-04 09:50:34,885 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:50:34,885 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 14 states. [2018-10-04 09:50:34,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:50:34,933 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-10-04 09:50:34,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-04 09:50:34,934 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 50 [2018-10-04 09:50:34,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:50:34,935 INFO L225 Difference]: With dead ends: 57 [2018-10-04 09:50:34,935 INFO L226 Difference]: Without dead ends: 55 [2018-10-04 09:50:34,936 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 12 [2018-10-04 09:50:34,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-04 09:50:34,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-10-04 09:50:34,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-04 09:50:34,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-10-04 09:50:34,942 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 50 [2018-10-04 09:50:34,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:50:34,942 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-10-04 09:50:34,942 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-04 09:50:34,942 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-10-04 09:50:34,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-04 09:50:34,943 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:50:34,943 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 1, 1, 1, 1, 1, 1] [2018-10-04 09:50:34,944 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:50:34,944 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:50:34,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1233576580, now seen corresponding path program 12 times [2018-10-04 09:50:34,944 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:50:34,944 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:50:34,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:34,945 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:50:34,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:34,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:50:35,273 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:35,273 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:50:35,274 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 [2018-10-04 09:50:35,281 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:50:35,458 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-10-04 09:50:35,458 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:50:35,466 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:50:35,731 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:35,751 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:50:35,751 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-10-04 09:50:35,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-04 09:50:35,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-04 09:50:35,752 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:50:35,752 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 15 states. [2018-10-04 09:50:35,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:50:35,771 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-10-04 09:50:35,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-04 09:50:35,771 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 54 [2018-10-04 09:50:35,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:50:35,772 INFO L225 Difference]: With dead ends: 61 [2018-10-04 09:50:35,772 INFO L226 Difference]: Without dead ends: 59 [2018-10-04 09:50:35,772 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.1s impTime 13 [2018-10-04 09:50:35,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-04 09:50:35,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-10-04 09:50:35,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-04 09:50:35,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-10-04 09:50:35,777 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 54 [2018-10-04 09:50:35,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:50:35,778 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-10-04 09:50:35,778 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-04 09:50:35,778 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-10-04 09:50:35,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-04 09:50:35,779 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:50:35,779 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 1, 1, 1, 1, 1, 1] [2018-10-04 09:50:35,779 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:50:35,780 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:50:35,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1893420590, now seen corresponding path program 13 times [2018-10-04 09:50:35,780 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:50:35,780 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:50:35,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:35,781 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:50:35,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:35,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:50:35,919 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:35,920 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:50:35,920 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 [2018-10-04 09:50:35,929 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:50:35,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:50:35,944 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:50:36,108 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:36,131 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:50:36,131 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-10-04 09:50:36,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-04 09:50:36,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-04 09:50:36,131 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:50:36,132 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 16 states. [2018-10-04 09:50:36,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:50:36,161 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-10-04 09:50:36,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-04 09:50:36,162 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 58 [2018-10-04 09:50:36,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:50:36,163 INFO L225 Difference]: With dead ends: 65 [2018-10-04 09:50:36,163 INFO L226 Difference]: Without dead ends: 63 [2018-10-04 09:50:36,164 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 14 [2018-10-04 09:50:36,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-10-04 09:50:36,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-10-04 09:50:36,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-10-04 09:50:36,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-10-04 09:50:36,169 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 58 [2018-10-04 09:50:36,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:50:36,169 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-10-04 09:50:36,170 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-04 09:50:36,170 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-10-04 09:50:36,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-04 09:50:36,171 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:50:36,171 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 1, 1, 1, 1, 1, 1] [2018-10-04 09:50:36,171 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:50:36,171 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:50:36,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1151478568, now seen corresponding path program 14 times [2018-10-04 09:50:36,172 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:50:36,172 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:50:36,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:36,173 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:50:36,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:36,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:50:36,520 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:36,521 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:50:36,521 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 [2018-10-04 09:50:36,528 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:50:36,570 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:50:36,570 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:50:36,573 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:50:36,723 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:36,743 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:50:36,743 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-10-04 09:50:36,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-04 09:50:36,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-04 09:50:36,744 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:50:36,744 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 17 states. [2018-10-04 09:50:36,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:50:36,827 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-10-04 09:50:36,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-04 09:50:36,828 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 62 [2018-10-04 09:50:36,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:50:36,829 INFO L225 Difference]: With dead ends: 69 [2018-10-04 09:50:36,829 INFO L226 Difference]: Without dead ends: 67 [2018-10-04 09:50:36,829 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 15 [2018-10-04 09:50:36,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-10-04 09:50:36,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-10-04 09:50:36,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-10-04 09:50:36,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-10-04 09:50:36,839 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 62 [2018-10-04 09:50:36,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:50:36,839 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-10-04 09:50:36,839 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-04 09:50:36,839 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-10-04 09:50:36,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-04 09:50:36,840 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:50:36,841 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 1, 1, 1, 1, 1, 1] [2018-10-04 09:50:36,841 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:50:36,841 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:50:36,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1586034306, now seen corresponding path program 15 times [2018-10-04 09:50:36,841 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:50:36,841 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:50:36,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:36,842 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:50:36,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:36,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:50:37,136 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:37,136 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:50:37,136 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 [2018-10-04 09:50:37,144 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:50:37,170 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-10-04 09:50:37,170 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:50:37,173 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:50:37,482 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:37,503 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:50:37,503 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-10-04 09:50:37,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-04 09:50:37,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-04 09:50:37,504 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:50:37,504 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 18 states. [2018-10-04 09:50:37,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:50:37,587 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-10-04 09:50:37,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-04 09:50:37,587 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 66 [2018-10-04 09:50:37,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:50:37,588 INFO L225 Difference]: With dead ends: 73 [2018-10-04 09:50:37,588 INFO L226 Difference]: Without dead ends: 71 [2018-10-04 09:50:37,589 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.1s impTime 16 [2018-10-04 09:50:37,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-04 09:50:37,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-10-04 09:50:37,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-10-04 09:50:37,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-10-04 09:50:37,594 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 66 [2018-10-04 09:50:37,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:50:37,594 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-10-04 09:50:37,594 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-04 09:50:37,595 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-10-04 09:50:37,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-04 09:50:37,595 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:50:37,596 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 1, 1, 1, 1, 1, 1] [2018-10-04 09:50:37,596 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:50:37,596 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:50:37,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1318531884, now seen corresponding path program 16 times [2018-10-04 09:50:37,596 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:50:37,596 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:50:37,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:37,597 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:50:37,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:37,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:50:37,839 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:37,839 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:50:37,839 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 [2018-10-04 09:50:37,847 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:50:37,862 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:50:37,862 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:50:37,864 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:50:38,468 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:38,489 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:50:38,489 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-10-04 09:50:38,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-04 09:50:38,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-04 09:50:38,490 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:50:38,490 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 19 states. [2018-10-04 09:50:38,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:50:38,549 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-10-04 09:50:38,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-04 09:50:38,549 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 70 [2018-10-04 09:50:38,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:50:38,550 INFO L225 Difference]: With dead ends: 77 [2018-10-04 09:50:38,550 INFO L226 Difference]: Without dead ends: 75 [2018-10-04 09:50:38,551 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.1s impTime 17 [2018-10-04 09:50:38,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-10-04 09:50:38,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-10-04 09:50:38,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-04 09:50:38,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-10-04 09:50:38,555 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 70 [2018-10-04 09:50:38,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:50:38,555 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-10-04 09:50:38,556 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-04 09:50:38,556 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-10-04 09:50:38,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-04 09:50:38,557 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:50:38,559 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 1, 1, 1, 1, 1, 1] [2018-10-04 09:50:38,560 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:50:38,560 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:50:38,560 INFO L82 PathProgramCache]: Analyzing trace with hash -561837354, now seen corresponding path program 17 times [2018-10-04 09:50:38,560 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:50:38,560 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:50:38,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:38,561 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:50:38,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:38,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:50:38,955 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:38,955 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:50:38,955 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:50:38,963 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:50:38,988 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-10-04 09:50:38,988 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:50:38,989 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:50:39,111 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:39,131 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:50:39,132 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-10-04 09:50:39,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-04 09:50:39,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-04 09:50:39,132 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:50:39,133 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 20 states. [2018-10-04 09:50:39,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:50:39,174 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-10-04 09:50:39,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-04 09:50:39,175 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 74 [2018-10-04 09:50:39,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:50:39,176 INFO L225 Difference]: With dead ends: 81 [2018-10-04 09:50:39,176 INFO L226 Difference]: Without dead ends: 79 [2018-10-04 09:50:39,176 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 18 [2018-10-04 09:50:39,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-10-04 09:50:39,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-10-04 09:50:39,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-10-04 09:50:39,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-10-04 09:50:39,183 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 74 [2018-10-04 09:50:39,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:50:39,184 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-10-04 09:50:39,184 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-04 09:50:39,184 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-10-04 09:50:39,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-04 09:50:39,185 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:50:39,185 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 1, 1, 1, 1, 1, 1] [2018-10-04 09:50:39,185 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:50:39,185 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:50:39,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1611070848, now seen corresponding path program 18 times [2018-10-04 09:50:39,185 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:50:39,186 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:50:39,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:39,186 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:50:39,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:39,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:50:39,554 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:50:39,563 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:39,563 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:50:39,563 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 [2018-10-04 09:50:39,572 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:50:39,595 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-10-04 09:50:39,595 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:50:39,597 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:50:39,721 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:39,741 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:50:39,741 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-10-04 09:50:39,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-04 09:50:39,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-04 09:50:39,741 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:50:39,742 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 21 states. [2018-10-04 09:50:39,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:50:39,774 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-10-04 09:50:39,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-04 09:50:39,774 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 78 [2018-10-04 09:50:39,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:50:39,775 INFO L225 Difference]: With dead ends: 85 [2018-10-04 09:50:39,775 INFO L226 Difference]: Without dead ends: 83 [2018-10-04 09:50:39,776 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 6 [2018-10-04 09:50:39,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-10-04 09:50:39,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-10-04 09:50:39,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-10-04 09:50:39,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-10-04 09:50:39,780 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 78 [2018-10-04 09:50:39,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:50:39,780 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-10-04 09:50:39,780 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-04 09:50:39,781 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-10-04 09:50:39,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-04 09:50:39,781 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:50:39,781 INFO L375 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 1, 1, 1, 1, 1, 1] [2018-10-04 09:50:39,782 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:50:39,782 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:50:39,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1013085398, now seen corresponding path program 19 times [2018-10-04 09:50:39,782 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:50:39,782 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:50:39,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:39,783 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:50:39,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:39,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:50:40,089 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:50:40,099 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:40,099 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:50:40,099 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 [2018-10-04 09:50:40,107 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:50:40,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:50:40,129 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:50:40,452 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:40,472 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:50:40,472 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-10-04 09:50:40,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-04 09:50:40,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-04 09:50:40,473 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:50:40,473 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 22 states. [2018-10-04 09:50:40,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:50:40,537 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-10-04 09:50:40,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-04 09:50:40,538 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 82 [2018-10-04 09:50:40,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:50:40,539 INFO L225 Difference]: With dead ends: 89 [2018-10-04 09:50:40,539 INFO L226 Difference]: Without dead ends: 87 [2018-10-04 09:50:40,539 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.1s impTime 7 [2018-10-04 09:50:40,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-10-04 09:50:40,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-10-04 09:50:40,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-10-04 09:50:40,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-10-04 09:50:40,542 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 82 [2018-10-04 09:50:40,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:50:40,543 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-10-04 09:50:40,543 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-04 09:50:40,543 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-10-04 09:50:40,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-04 09:50:40,544 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:50:40,544 INFO L375 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 1, 1, 1, 1, 1, 1] [2018-10-04 09:50:40,544 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:50:40,544 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:50:40,545 INFO L82 PathProgramCache]: Analyzing trace with hash 947991508, now seen corresponding path program 20 times [2018-10-04 09:50:40,545 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:50:40,545 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:50:40,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:40,546 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:50:40,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:40,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:50:41,427 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:50:41,463 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:41,463 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:50:41,463 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 [2018-10-04 09:50:41,473 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:50:41,505 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:50:41,505 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:50:41,507 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:50:41,698 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:41,722 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:50:41,723 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-10-04 09:50:41,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-04 09:50:41,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-04 09:50:41,723 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:50:41,723 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 23 states. [2018-10-04 09:50:41,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:50:41,751 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-10-04 09:50:41,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-04 09:50:41,753 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 86 [2018-10-04 09:50:41,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:50:41,754 INFO L225 Difference]: With dead ends: 93 [2018-10-04 09:50:41,755 INFO L226 Difference]: Without dead ends: 91 [2018-10-04 09:50:41,755 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.5s impTime 8 [2018-10-04 09:50:41,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-04 09:50:41,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-10-04 09:50:41,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-10-04 09:50:41,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-10-04 09:50:41,758 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 86 [2018-10-04 09:50:41,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:50:41,758 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-10-04 09:50:41,758 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-04 09:50:41,758 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-10-04 09:50:41,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-04 09:50:41,759 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:50:41,759 INFO L375 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 1, 1, 1, 1, 1, 1] [2018-10-04 09:50:41,760 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:50:41,760 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:50:41,760 INFO L82 PathProgramCache]: Analyzing trace with hash -861112450, now seen corresponding path program 21 times [2018-10-04 09:50:41,760 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:50:41,760 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:50:41,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:41,761 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:50:41,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:41,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:50:42,305 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:50:42,409 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:42,410 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:50:42,410 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 [2018-10-04 09:50:42,416 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:50:42,438 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-10-04 09:50:42,438 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:50:42,441 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:50:42,579 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:42,600 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:50:42,600 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-10-04 09:50:42,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-04 09:50:42,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-04 09:50:42,601 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:50:42,601 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 24 states. [2018-10-04 09:50:42,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:50:42,667 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-10-04 09:50:42,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-04 09:50:42,667 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 90 [2018-10-04 09:50:42,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:50:42,668 INFO L225 Difference]: With dead ends: 97 [2018-10-04 09:50:42,668 INFO L226 Difference]: Without dead ends: 95 [2018-10-04 09:50:42,669 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.4s impTime 9 [2018-10-04 09:50:42,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-10-04 09:50:42,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-10-04 09:50:42,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-10-04 09:50:42,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-10-04 09:50:42,672 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 90 [2018-10-04 09:50:42,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:50:42,673 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-10-04 09:50:42,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-04 09:50:42,673 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-10-04 09:50:42,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-10-04 09:50:42,674 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:50:42,674 INFO L375 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 1, 1, 1, 1, 1, 1] [2018-10-04 09:50:42,674 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:50:42,674 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:50:42,675 INFO L82 PathProgramCache]: Analyzing trace with hash 215602728, now seen corresponding path program 22 times [2018-10-04 09:50:42,675 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:50:42,675 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:50:42,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:42,676 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:50:42,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:42,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:50:43,199 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:50:43,251 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:43,251 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:50:43,251 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:50:43,260 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:50:43,301 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:50:43,302 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:50:43,304 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:50:43,533 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:43,553 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:50:43,553 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-10-04 09:50:43,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-04 09:50:43,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-04 09:50:43,554 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:50:43,554 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 25 states. [2018-10-04 09:50:43,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:50:43,591 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-10-04 09:50:43,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-04 09:50:43,592 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 94 [2018-10-04 09:50:43,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:50:43,593 INFO L225 Difference]: With dead ends: 101 [2018-10-04 09:50:43,593 INFO L226 Difference]: Without dead ends: 99 [2018-10-04 09:50:43,593 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.3s impTime 10 [2018-10-04 09:50:43,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-10-04 09:50:43,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-10-04 09:50:43,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-10-04 09:50:43,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-10-04 09:50:43,597 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 94 [2018-10-04 09:50:43,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:50:43,597 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-10-04 09:50:43,597 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-04 09:50:43,597 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-10-04 09:50:43,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-04 09:50:43,598 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:50:43,598 INFO L375 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 1, 1, 1, 1, 1, 1] [2018-10-04 09:50:43,598 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:50:43,598 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:50:43,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1534865454, now seen corresponding path program 23 times [2018-10-04 09:50:43,599 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:50:43,599 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:50:43,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:43,599 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:50:43,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:43,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:50:43,885 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:50:43,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:43,993 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:50:43,993 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 [2018-10-04 09:50:44,001 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:50:44,033 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-10-04 09:50:44,033 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:50:44,035 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:50:44,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:44,441 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:50:44,441 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-10-04 09:50:44,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-04 09:50:44,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-04 09:50:44,442 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:50:44,442 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 26 states. [2018-10-04 09:50:44,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:50:44,485 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-10-04 09:50:44,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-04 09:50:44,487 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 98 [2018-10-04 09:50:44,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:50:44,488 INFO L225 Difference]: With dead ends: 105 [2018-10-04 09:50:44,488 INFO L226 Difference]: Without dead ends: 103 [2018-10-04 09:50:44,489 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.2s impTime 11 [2018-10-04 09:50:44,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-10-04 09:50:44,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-10-04 09:50:44,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-10-04 09:50:44,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-10-04 09:50:44,491 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 98 [2018-10-04 09:50:44,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:50:44,491 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-10-04 09:50:44,491 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-04 09:50:44,491 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-10-04 09:50:44,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-04 09:50:44,492 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:50:44,492 INFO L375 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 1, 1, 1, 1, 1, 1] [2018-10-04 09:50:44,492 INFO L423 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:50:44,493 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:50:44,493 INFO L82 PathProgramCache]: Analyzing trace with hash -35330948, now seen corresponding path program 24 times [2018-10-04 09:50:44,493 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:50:44,493 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:50:44,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:44,494 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:50:44,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:44,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:50:44,887 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:50:44,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:44,994 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:50:44,994 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 [2018-10-04 09:50:45,001 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:50:45,060 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-10-04 09:50:45,060 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:50:45,062 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:50:45,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:45,294 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:50:45,295 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-10-04 09:50:45,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-04 09:50:45,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-04 09:50:45,295 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:50:45,295 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 27 states. [2018-10-04 09:50:45,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:50:45,350 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-10-04 09:50:45,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-04 09:50:45,350 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 102 [2018-10-04 09:50:45,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:50:45,351 INFO L225 Difference]: With dead ends: 109 [2018-10-04 09:50:45,351 INFO L226 Difference]: Without dead ends: 107 [2018-10-04 09:50:45,351 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.3s impTime 12 [2018-10-04 09:50:45,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-10-04 09:50:45,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-10-04 09:50:45,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-10-04 09:50:45,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-10-04 09:50:45,354 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 102 [2018-10-04 09:50:45,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:50:45,354 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-10-04 09:50:45,354 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-04 09:50:45,354 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-10-04 09:50:45,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-04 09:50:45,355 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:50:45,355 INFO L375 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 1, 1, 1, 1, 1, 1] [2018-10-04 09:50:45,356 INFO L423 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:50:45,356 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:50:45,356 INFO L82 PathProgramCache]: Analyzing trace with hash -503868378, now seen corresponding path program 25 times [2018-10-04 09:50:45,356 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:50:45,356 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:50:45,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:45,357 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:50:45,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:45,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:50:45,756 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:50:45,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:45,920 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:50:45,920 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 [2018-10-04 09:50:45,927 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:50:45,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:50:45,953 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:50:46,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:46,205 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:50:46,206 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-10-04 09:50:46,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-04 09:50:46,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-04 09:50:46,206 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:50:46,207 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 28 states. [2018-10-04 09:50:46,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:50:46,285 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-10-04 09:50:46,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-04 09:50:46,286 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 106 [2018-10-04 09:50:46,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:50:46,287 INFO L225 Difference]: With dead ends: 113 [2018-10-04 09:50:46,287 INFO L226 Difference]: Without dead ends: 111 [2018-10-04 09:50:46,288 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.3s impTime 13 [2018-10-04 09:50:46,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-10-04 09:50:46,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-10-04 09:50:46,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-10-04 09:50:46,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-10-04 09:50:46,305 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 106 [2018-10-04 09:50:46,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:50:46,305 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-10-04 09:50:46,305 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-04 09:50:46,305 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-10-04 09:50:46,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-04 09:50:46,306 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:50:46,306 INFO L375 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 1, 1, 1, 1, 1, 1] [2018-10-04 09:50:46,306 INFO L423 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:50:46,306 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:50:46,306 INFO L82 PathProgramCache]: Analyzing trace with hash 410410704, now seen corresponding path program 26 times [2018-10-04 09:50:46,307 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:50:46,307 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:50:46,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:46,308 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:50:46,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:46,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:50:46,598 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:50:46,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:46,831 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:50:46,831 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 [2018-10-04 09:50:46,838 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:50:46,861 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:50:46,861 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:50:46,863 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:50:47,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:47,043 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:50:47,043 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-10-04 09:50:47,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-04 09:50:47,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-04 09:50:47,044 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:50:47,044 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 29 states. [2018-10-04 09:50:47,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:50:47,182 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-10-04 09:50:47,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-04 09:50:47,182 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 110 [2018-10-04 09:50:47,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:50:47,184 INFO L225 Difference]: With dead ends: 117 [2018-10-04 09:50:47,184 INFO L226 Difference]: Without dead ends: 115 [2018-10-04 09:50:47,184 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.4s impTime 14 [2018-10-04 09:50:47,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-10-04 09:50:47,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-10-04 09:50:47,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-10-04 09:50:47,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-10-04 09:50:47,187 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 110 [2018-10-04 09:50:47,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:50:47,188 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-10-04 09:50:47,188 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-04 09:50:47,188 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-10-04 09:50:47,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-04 09:50:47,188 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:50:47,188 INFO L375 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 1, 1, 1, 1, 1, 1] [2018-10-04 09:50:47,189 INFO L423 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:50:47,189 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:50:47,189 INFO L82 PathProgramCache]: Analyzing trace with hash 131843194, now seen corresponding path program 27 times [2018-10-04 09:50:47,189 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:50:47,189 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:50:47,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:47,190 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:50:47,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:47,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:50:47,989 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:50:48,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:48,159 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:50:48,159 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:50:48,166 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:50:48,199 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-10-04 09:50:48,200 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:50:48,202 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:50:48,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:48,433 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:50:48,433 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-10-04 09:50:48,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-04 09:50:48,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-04 09:50:48,433 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:50:48,434 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 30 states. [2018-10-04 09:50:48,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:50:48,480 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-10-04 09:50:48,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-04 09:50:48,480 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 114 [2018-10-04 09:50:48,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:50:48,482 INFO L225 Difference]: With dead ends: 121 [2018-10-04 09:50:48,482 INFO L226 Difference]: Without dead ends: 119 [2018-10-04 09:50:48,482 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.6s impTime 15 [2018-10-04 09:50:48,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-10-04 09:50:48,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-10-04 09:50:48,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-10-04 09:50:48,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-10-04 09:50:48,485 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 114 [2018-10-04 09:50:48,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:50:48,485 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-10-04 09:50:48,486 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-04 09:50:48,486 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-10-04 09:50:48,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-04 09:50:48,486 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:50:48,487 INFO L375 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 1, 1, 1, 1, 1, 1] [2018-10-04 09:50:48,487 INFO L423 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:50:48,487 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:50:48,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1432503588, now seen corresponding path program 28 times [2018-10-04 09:50:48,487 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:50:48,487 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:50:48,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:48,488 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:50:48,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:48,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:50:48,748 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:50:48,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:48,971 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:50:48,971 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 [2018-10-04 09:50:48,980 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:50:49,004 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:50:49,004 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:50:49,006 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:50:49,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:49,210 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:50:49,210 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-10-04 09:50:49,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-04 09:50:49,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-04 09:50:49,211 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:50:49,211 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 31 states. [2018-10-04 09:50:49,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:50:49,293 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-10-04 09:50:49,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-04 09:50:49,294 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 118 [2018-10-04 09:50:49,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:50:49,295 INFO L225 Difference]: With dead ends: 125 [2018-10-04 09:50:49,295 INFO L226 Difference]: Without dead ends: 123 [2018-10-04 09:50:49,296 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 16 [2018-10-04 09:50:49,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-10-04 09:50:49,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-10-04 09:50:49,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-10-04 09:50:49,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2018-10-04 09:50:49,299 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 118 [2018-10-04 09:50:49,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:50:49,299 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2018-10-04 09:50:49,299 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-04 09:50:49,300 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2018-10-04 09:50:49,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-04 09:50:49,300 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:50:49,300 INFO L375 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 1, 1, 1, 1, 1, 1] [2018-10-04 09:50:49,301 INFO L423 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:50:49,301 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:50:49,301 INFO L82 PathProgramCache]: Analyzing trace with hash -2063310642, now seen corresponding path program 29 times [2018-10-04 09:50:49,301 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:50:49,301 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:50:49,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:49,302 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:50:49,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:49,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:50:49,731 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:50:49,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:49,936 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:50:49,936 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 [2018-10-04 09:50:49,943 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:50:49,977 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-10-04 09:50:49,977 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:50:49,979 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:50:50,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:50,334 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:50:50,334 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-10-04 09:50:50,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-04 09:50:50,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-04 09:50:50,335 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:50:50,335 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 32 states. [2018-10-04 09:50:50,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:50:50,476 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-10-04 09:50:50,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-04 09:50:50,477 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 122 [2018-10-04 09:50:50,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:50:50,477 INFO L225 Difference]: With dead ends: 129 [2018-10-04 09:50:50,477 INFO L226 Difference]: Without dead ends: 127 [2018-10-04 09:50:50,478 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.4s impTime 17 [2018-10-04 09:50:50,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-10-04 09:50:50,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-10-04 09:50:50,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-10-04 09:50:50,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-10-04 09:50:50,480 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 122 [2018-10-04 09:50:50,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:50:50,480 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-10-04 09:50:50,481 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-04 09:50:50,481 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-10-04 09:50:50,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-04 09:50:50,481 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:50:50,481 INFO L375 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 1, 1, 1, 1, 1, 1] [2018-10-04 09:50:50,481 INFO L423 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:50:50,482 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:50:50,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1719888008, now seen corresponding path program 30 times [2018-10-04 09:50:50,482 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:50:50,482 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:50:50,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:50,483 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:50:50,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:50,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:50:50,844 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:50:50,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:50,996 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:50:50,996 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 [2018-10-04 09:50:51,005 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:50:51,045 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-10-04 09:50:51,045 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:50:51,048 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:50:51,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:51,290 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:50:51,291 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-10-04 09:50:51,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-04 09:50:51,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-04 09:50:51,291 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:50:51,292 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 33 states. [2018-10-04 09:50:51,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:50:51,341 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-10-04 09:50:51,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-04 09:50:51,341 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 126 [2018-10-04 09:50:51,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:50:51,343 INFO L225 Difference]: With dead ends: 133 [2018-10-04 09:50:51,343 INFO L226 Difference]: Without dead ends: 131 [2018-10-04 09:50:51,343 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.3s impTime 18 [2018-10-04 09:50:51,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-10-04 09:50:51,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-10-04 09:50:51,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-10-04 09:50:51,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2018-10-04 09:50:51,347 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 126 [2018-10-04 09:50:51,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:50:51,347 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2018-10-04 09:50:51,347 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-04 09:50:51,347 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2018-10-04 09:50:51,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-04 09:50:51,348 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:50:51,348 INFO L375 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 1, 1, 1, 1, 1, 1] [2018-10-04 09:50:51,348 INFO L423 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:50:51,348 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:50:51,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1270519518, now seen corresponding path program 31 times [2018-10-04 09:50:51,348 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:50:51,348 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:50:51,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:51,349 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:50:51,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:51,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:50:51,709 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:50:51,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:51,841 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:50:51,841 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 [2018-10-04 09:50:51,849 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:50:51,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:50:51,874 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:50:52,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:52,154 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:50:52,154 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-10-04 09:50:52,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-04 09:50:52,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-04 09:50:52,155 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:50:52,155 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 34 states. [2018-10-04 09:50:52,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:50:52,200 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-10-04 09:50:52,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-04 09:50:52,200 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 130 [2018-10-04 09:50:52,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:50:52,202 INFO L225 Difference]: With dead ends: 137 [2018-10-04 09:50:52,202 INFO L226 Difference]: Without dead ends: 135 [2018-10-04 09:50:52,202 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.3s impTime 19 [2018-10-04 09:50:52,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-10-04 09:50:52,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-10-04 09:50:52,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-10-04 09:50:52,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-10-04 09:50:52,205 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 130 [2018-10-04 09:50:52,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:50:52,205 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-10-04 09:50:52,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-04 09:50:52,206 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-10-04 09:50:52,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-04 09:50:52,206 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:50:52,206 INFO L375 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 1, 1, 1, 1, 1, 1] [2018-10-04 09:50:52,206 INFO L423 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:50:52,207 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:50:52,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1248242228, now seen corresponding path program 32 times [2018-10-04 09:50:52,207 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:50:52,207 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:50:52,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:52,208 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:50:52,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:52,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:50:52,550 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:50:52,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:52,902 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:50:52,902 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 [2018-10-04 09:50:52,910 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:50:52,937 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:50:52,937 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:50:52,939 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:50:53,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:53,186 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:50:53,187 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-10-04 09:50:53,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-04 09:50:53,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-04 09:50:53,188 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:50:53,188 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 35 states. [2018-10-04 09:50:53,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:50:53,246 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-10-04 09:50:53,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-04 09:50:53,246 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 134 [2018-10-04 09:50:53,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:50:53,248 INFO L225 Difference]: With dead ends: 141 [2018-10-04 09:50:53,248 INFO L226 Difference]: Without dead ends: 139 [2018-10-04 09:50:53,248 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.5s impTime 20 [2018-10-04 09:50:53,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-10-04 09:50:53,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-10-04 09:50:53,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-10-04 09:50:53,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2018-10-04 09:50:53,251 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 134 [2018-10-04 09:50:53,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:50:53,251 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2018-10-04 09:50:53,252 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-04 09:50:53,252 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2018-10-04 09:50:53,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-04 09:50:53,252 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:50:53,252 INFO L375 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 1, 1, 1, 1, 1, 1] [2018-10-04 09:50:53,252 INFO L423 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:50:53,253 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:50:53,253 INFO L82 PathProgramCache]: Analyzing trace with hash -596451978, now seen corresponding path program 33 times [2018-10-04 09:50:53,253 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:50:53,253 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:50:53,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:53,253 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:50:53,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:53,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:50:53,530 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:50:53,704 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:53,705 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:50:53,705 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 [2018-10-04 09:50:53,713 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:50:53,776 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2018-10-04 09:50:53,776 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:50:53,778 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:50:53,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:54,013 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:50:54,013 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-10-04 09:50:54,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-04 09:50:54,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-04 09:50:54,014 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:50:54,014 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 36 states. [2018-10-04 09:50:54,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:50:54,067 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-10-04 09:50:54,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-04 09:50:54,067 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 138 [2018-10-04 09:50:54,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:50:54,069 INFO L225 Difference]: With dead ends: 145 [2018-10-04 09:50:54,069 INFO L226 Difference]: Without dead ends: 143 [2018-10-04 09:50:54,070 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.2s impTime 21 [2018-10-04 09:50:54,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-10-04 09:50:54,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-10-04 09:50:54,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-10-04 09:50:54,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2018-10-04 09:50:54,073 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 138 [2018-10-04 09:50:54,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:50:54,073 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2018-10-04 09:50:54,074 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-04 09:50:54,074 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2018-10-04 09:50:54,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-04 09:50:54,074 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:50:54,074 INFO L375 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 1, 1, 1, 1, 1, 1] [2018-10-04 09:50:54,075 INFO L423 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:50:54,075 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:50:54,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1720483872, now seen corresponding path program 34 times [2018-10-04 09:50:54,075 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:50:54,075 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:50:54,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:54,076 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:50:54,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:54,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:50:54,403 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:50:54,729 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:50:54,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:54,745 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:50:54,745 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 [2018-10-04 09:50:54,752 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:50:54,780 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:50:54,781 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:50:54,783 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:50:55,040 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:55,060 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:50:55,061 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-10-04 09:50:55,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-04 09:50:55,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-04 09:50:55,062 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:50:55,062 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand 37 states. [2018-10-04 09:50:55,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:50:55,152 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-10-04 09:50:55,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-04 09:50:55,152 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 142 [2018-10-04 09:50:55,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:50:55,154 INFO L225 Difference]: With dead ends: 149 [2018-10-04 09:50:55,154 INFO L226 Difference]: Without dead ends: 147 [2018-10-04 09:50:55,154 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.4s impTime 7 [2018-10-04 09:50:55,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-10-04 09:50:55,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-10-04 09:50:55,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-10-04 09:50:55,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2018-10-04 09:50:55,157 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 142 [2018-10-04 09:50:55,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:50:55,157 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2018-10-04 09:50:55,158 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-04 09:50:55,158 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2018-10-04 09:50:55,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-04 09:50:55,159 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:50:55,159 INFO L375 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 1, 1, 1, 1, 1, 1] [2018-10-04 09:50:55,159 INFO L423 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:50:55,159 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:50:55,160 INFO L82 PathProgramCache]: Analyzing trace with hash 811646410, now seen corresponding path program 35 times [2018-10-04 09:50:55,160 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:50:55,160 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:50:55,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:55,161 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:50:55,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:55,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:50:55,469 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:50:56,102 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:50:56,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:56,122 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:50:56,122 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 [2018-10-04 09:50:56,131 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:50:56,216 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-10-04 09:50:56,217 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:50:56,221 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:50:56,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:56,592 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:50:56,593 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-10-04 09:50:56,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-04 09:50:56,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-04 09:50:56,593 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:50:56,594 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 38 states. [2018-10-04 09:50:56,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:50:56,938 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2018-10-04 09:50:56,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-04 09:50:56,938 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 146 [2018-10-04 09:50:56,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:50:56,939 INFO L225 Difference]: With dead ends: 153 [2018-10-04 09:50:56,940 INFO L226 Difference]: Without dead ends: 151 [2018-10-04 09:50:56,940 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.7s impTime 8 [2018-10-04 09:50:56,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-10-04 09:50:56,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-10-04 09:50:56,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-10-04 09:50:56,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2018-10-04 09:50:56,944 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 146 [2018-10-04 09:50:56,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:50:56,944 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2018-10-04 09:50:56,945 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-04 09:50:56,945 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2018-10-04 09:50:56,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-10-04 09:50:56,945 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:50:56,946 INFO L375 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 1, 1, 1, 1, 1, 1] [2018-10-04 09:50:56,948 INFO L423 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:50:56,948 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:50:56,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1428821620, now seen corresponding path program 36 times [2018-10-04 09:50:56,948 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:50:56,948 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:50:56,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:56,950 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:50:56,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:56,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:50:57,289 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:50:58,344 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:50:58,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:58,572 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:50:58,572 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 [2018-10-04 09:50:58,580 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:50:58,631 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-10-04 09:50:58,631 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:50:58,634 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:50:59,325 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:59,345 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:50:59,345 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-10-04 09:50:59,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-04 09:50:59,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-04 09:50:59,346 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:50:59,346 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 39 states. [2018-10-04 09:50:59,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:50:59,395 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-10-04 09:50:59,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-04 09:50:59,395 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 150 [2018-10-04 09:50:59,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:50:59,396 INFO L225 Difference]: With dead ends: 157 [2018-10-04 09:50:59,396 INFO L226 Difference]: Without dead ends: 155 [2018-10-04 09:50:59,397 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.2s impTime 9 [2018-10-04 09:50:59,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-10-04 09:50:59,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-10-04 09:50:59,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-10-04 09:50:59,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 155 transitions. [2018-10-04 09:50:59,400 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 155 transitions. Word has length 150 [2018-10-04 09:50:59,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:50:59,400 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 155 transitions. [2018-10-04 09:50:59,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-04 09:50:59,401 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 155 transitions. [2018-10-04 09:50:59,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-10-04 09:50:59,401 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:50:59,401 INFO L375 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 1, 1, 1, 1, 1, 1] [2018-10-04 09:50:59,402 INFO L423 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:50:59,402 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:50:59,402 INFO L82 PathProgramCache]: Analyzing trace with hash -823981538, now seen corresponding path program 37 times [2018-10-04 09:50:59,402 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:50:59,402 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:50:59,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:59,403 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:50:59,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:50:59,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:50:59,648 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:50:59,895 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:50:59,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:50:59,980 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:50:59,980 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 [2018-10-04 09:50:59,990 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:51:00,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:51:00,022 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:51:00,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:00,283 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:51:00,283 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-10-04 09:51:00,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-04 09:51:00,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-04 09:51:00,284 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:51:00,284 INFO L87 Difference]: Start difference. First operand 155 states and 155 transitions. Second operand 40 states. [2018-10-04 09:51:00,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:51:00,350 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2018-10-04 09:51:00,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-04 09:51:00,356 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 154 [2018-10-04 09:51:00,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:51:00,357 INFO L225 Difference]: With dead ends: 161 [2018-10-04 09:51:00,357 INFO L226 Difference]: Without dead ends: 159 [2018-10-04 09:51:00,357 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.3s impTime 10 [2018-10-04 09:51:00,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-10-04 09:51:00,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-10-04 09:51:00,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-10-04 09:51:00,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2018-10-04 09:51:00,360 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 154 [2018-10-04 09:51:00,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:51:00,361 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2018-10-04 09:51:00,361 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-04 09:51:00,361 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2018-10-04 09:51:00,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-04 09:51:00,362 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:51:00,362 INFO L375 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 1, 1, 1, 1, 1, 1] [2018-10-04 09:51:00,362 INFO L423 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:51:00,362 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:51:00,362 INFO L82 PathProgramCache]: Analyzing trace with hash 373692616, now seen corresponding path program 38 times [2018-10-04 09:51:00,362 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:51:00,363 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:51:00,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:00,363 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:51:00,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:00,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:51:01,646 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:51:01,866 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:51:01,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:01,928 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:51:01,928 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 [2018-10-04 09:51:01,935 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:51:01,966 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:51:01,966 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:51:01,969 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:51:03,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:03,194 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:51:03,194 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-10-04 09:51:03,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-04 09:51:03,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-04 09:51:03,195 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:51:03,195 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand 41 states. [2018-10-04 09:51:03,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:51:03,514 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2018-10-04 09:51:03,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-04 09:51:03,514 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 158 [2018-10-04 09:51:03,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:51:03,516 INFO L225 Difference]: With dead ends: 165 [2018-10-04 09:51:03,516 INFO L226 Difference]: Without dead ends: 163 [2018-10-04 09:51:03,516 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 1.1s impTime 11 [2018-10-04 09:51:03,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-10-04 09:51:03,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-10-04 09:51:03,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-10-04 09:51:03,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 163 transitions. [2018-10-04 09:51:03,519 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 163 transitions. Word has length 158 [2018-10-04 09:51:03,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:51:03,520 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 163 transitions. [2018-10-04 09:51:03,520 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-04 09:51:03,520 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 163 transitions. [2018-10-04 09:51:03,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-10-04 09:51:03,521 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:51:03,521 INFO L375 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 1, 1, 1, 1, 1, 1] [2018-10-04 09:51:03,521 INFO L423 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:51:03,521 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:51:03,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1026702734, now seen corresponding path program 39 times [2018-10-04 09:51:03,522 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:51:03,522 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:51:03,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:03,522 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:51:03,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:03,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:51:04,132 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:51:04,355 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:51:04,478 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:04,479 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:51:04,479 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 [2018-10-04 09:51:04,487 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:51:04,535 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2018-10-04 09:51:04,535 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:51:04,538 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:51:04,795 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:04,815 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:51:04,815 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-10-04 09:51:04,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-04 09:51:04,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-04 09:51:04,816 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:51:04,816 INFO L87 Difference]: Start difference. First operand 163 states and 163 transitions. Second operand 42 states. [2018-10-04 09:51:04,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:51:04,999 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-10-04 09:51:05,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-04 09:51:05,000 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 162 [2018-10-04 09:51:05,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:51:05,001 INFO L225 Difference]: With dead ends: 169 [2018-10-04 09:51:05,002 INFO L226 Difference]: Without dead ends: 167 [2018-10-04 09:51:05,002 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.6s impTime 12 [2018-10-04 09:51:05,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-10-04 09:51:05,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-10-04 09:51:05,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-10-04 09:51:05,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2018-10-04 09:51:05,006 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 162 [2018-10-04 09:51:05,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:51:05,006 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2018-10-04 09:51:05,006 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-04 09:51:05,007 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2018-10-04 09:51:05,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-10-04 09:51:05,007 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:51:05,008 INFO L375 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 1, 1, 1, 1, 1, 1] [2018-10-04 09:51:05,008 INFO L423 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:51:05,008 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:51:05,008 INFO L82 PathProgramCache]: Analyzing trace with hash 716474140, now seen corresponding path program 40 times [2018-10-04 09:51:05,008 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:51:05,008 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:51:05,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:05,009 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:51:05,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:05,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:51:05,308 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:51:05,684 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:51:06,032 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:06,032 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:51:06,032 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 [2018-10-04 09:51:06,041 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:51:06,078 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:51:06,078 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:51:06,080 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:51:06,404 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:06,424 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:51:06,424 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-10-04 09:51:06,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-04 09:51:06,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-04 09:51:06,425 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:51:06,425 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 43 states. [2018-10-04 09:51:06,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:51:06,487 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2018-10-04 09:51:06,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-04 09:51:06,487 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 166 [2018-10-04 09:51:06,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:51:06,488 INFO L225 Difference]: With dead ends: 173 [2018-10-04 09:51:06,488 INFO L226 Difference]: Without dead ends: 171 [2018-10-04 09:51:06,488 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.8s impTime 13 [2018-10-04 09:51:06,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-10-04 09:51:06,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-10-04 09:51:06,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-10-04 09:51:06,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2018-10-04 09:51:06,491 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 166 [2018-10-04 09:51:06,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:51:06,492 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2018-10-04 09:51:06,492 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-04 09:51:06,492 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2018-10-04 09:51:06,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-04 09:51:06,493 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:51:06,493 INFO L375 BasicCegarLoop]: trace histogram [41, 41, 41, 41, 1, 1, 1, 1, 1, 1] [2018-10-04 09:51:06,493 INFO L423 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:51:06,493 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:51:06,493 INFO L82 PathProgramCache]: Analyzing trace with hash 49604294, now seen corresponding path program 41 times [2018-10-04 09:51:06,493 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:51:06,493 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:51:06,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:06,494 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:51:06,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:06,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:51:06,754 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:51:07,137 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:51:07,333 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:07,333 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:51:07,333 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:51:07,341 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:51:07,403 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2018-10-04 09:51:07,403 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:51:07,406 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:51:07,706 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:07,735 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:51:07,735 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-10-04 09:51:07,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-04 09:51:07,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-04 09:51:07,736 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:51:07,736 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 44 states. [2018-10-04 09:51:07,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:51:07,960 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-10-04 09:51:07,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-04 09:51:07,961 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 170 [2018-10-04 09:51:07,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:51:07,961 INFO L225 Difference]: With dead ends: 177 [2018-10-04 09:51:07,962 INFO L226 Difference]: Without dead ends: 175 [2018-10-04 09:51:07,962 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.6s impTime 14 [2018-10-04 09:51:07,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-10-04 09:51:07,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-10-04 09:51:07,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-10-04 09:51:07,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 175 transitions. [2018-10-04 09:51:07,966 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 175 transitions. Word has length 170 [2018-10-04 09:51:07,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:51:07,966 INFO L480 AbstractCegarLoop]: Abstraction has 175 states and 175 transitions. [2018-10-04 09:51:07,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-04 09:51:07,966 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 175 transitions. [2018-10-04 09:51:07,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-10-04 09:51:07,967 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:51:07,967 INFO L375 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 1, 1, 1, 1, 1, 1] [2018-10-04 09:51:07,967 INFO L423 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:51:07,968 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:51:07,968 INFO L82 PathProgramCache]: Analyzing trace with hash -11968144, now seen corresponding path program 42 times [2018-10-04 09:51:07,968 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:51:07,968 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:51:07,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:07,969 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:51:07,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:07,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:51:09,133 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:51:09,358 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:51:09,579 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:09,579 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:51:09,579 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 [2018-10-04 09:51:09,587 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:51:09,638 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-10-04 09:51:09,638 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:51:09,641 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:51:09,928 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:09,960 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:51:09,960 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-10-04 09:51:09,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-04 09:51:09,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-04 09:51:09,961 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:51:09,961 INFO L87 Difference]: Start difference. First operand 175 states and 175 transitions. Second operand 45 states. [2018-10-04 09:51:10,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:51:10,113 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2018-10-04 09:51:10,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-04 09:51:10,120 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 174 [2018-10-04 09:51:10,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:51:10,121 INFO L225 Difference]: With dead ends: 181 [2018-10-04 09:51:10,121 INFO L226 Difference]: Without dead ends: 179 [2018-10-04 09:51:10,121 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.1s impTime 15 [2018-10-04 09:51:10,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-10-04 09:51:10,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-10-04 09:51:10,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-10-04 09:51:10,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2018-10-04 09:51:10,124 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 174 [2018-10-04 09:51:10,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:51:10,125 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2018-10-04 09:51:10,125 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-04 09:51:10,125 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2018-10-04 09:51:10,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-04 09:51:10,126 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:51:10,126 INFO L375 BasicCegarLoop]: trace histogram [43, 43, 43, 43, 1, 1, 1, 1, 1, 1] [2018-10-04 09:51:10,126 INFO L423 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:51:10,126 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:51:10,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1915516698, now seen corresponding path program 43 times [2018-10-04 09:51:10,127 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:51:10,127 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:51:10,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:10,128 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:51:10,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:10,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:51:11,275 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:51:11,877 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:51:12,117 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:12,117 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:51:12,117 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 [2018-10-04 09:51:12,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:51:12,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:51:12,161 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:51:12,448 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:12,468 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:51:12,468 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-10-04 09:51:12,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-04 09:51:12,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-04 09:51:12,469 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:51:12,469 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand 46 states. [2018-10-04 09:51:12,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:51:12,532 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2018-10-04 09:51:12,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-04 09:51:12,532 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 178 [2018-10-04 09:51:12,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:51:12,533 INFO L225 Difference]: With dead ends: 185 [2018-10-04 09:51:12,534 INFO L226 Difference]: Without dead ends: 183 [2018-10-04 09:51:12,534 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.2s impTime 16 [2018-10-04 09:51:12,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-10-04 09:51:12,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-10-04 09:51:12,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-10-04 09:51:12,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 183 transitions. [2018-10-04 09:51:12,537 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 183 transitions. Word has length 178 [2018-10-04 09:51:12,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:51:12,537 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 183 transitions. [2018-10-04 09:51:12,537 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-04 09:51:12,537 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 183 transitions. [2018-10-04 09:51:12,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-10-04 09:51:12,538 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:51:12,538 INFO L375 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 1, 1, 1, 1, 1, 1] [2018-10-04 09:51:12,538 INFO L423 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:51:12,538 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:51:12,538 INFO L82 PathProgramCache]: Analyzing trace with hash -321345596, now seen corresponding path program 44 times [2018-10-04 09:51:12,539 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:51:12,539 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:51:12,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:12,539 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:51:12,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:12,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:51:12,856 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:51:13,104 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:51:13,375 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:13,375 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:51:13,375 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:51:13,384 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:51:13,418 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:51:13,418 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:51:13,420 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:51:13,688 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:13,708 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:51:13,708 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-10-04 09:51:13,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-04 09:51:13,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-04 09:51:13,709 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:51:13,709 INFO L87 Difference]: Start difference. First operand 183 states and 183 transitions. Second operand 47 states. [2018-10-04 09:51:13,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:51:13,805 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2018-10-04 09:51:13,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-04 09:51:13,805 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 182 [2018-10-04 09:51:13,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:51:13,807 INFO L225 Difference]: With dead ends: 189 [2018-10-04 09:51:13,807 INFO L226 Difference]: Without dead ends: 187 [2018-10-04 09:51:13,807 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.6s impTime 17 [2018-10-04 09:51:13,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-10-04 09:51:13,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-10-04 09:51:13,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-10-04 09:51:13,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2018-10-04 09:51:13,811 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 182 [2018-10-04 09:51:13,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:51:13,811 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2018-10-04 09:51:13,811 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-04 09:51:13,811 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2018-10-04 09:51:13,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-04 09:51:13,812 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:51:13,812 INFO L375 BasicCegarLoop]: trace histogram [45, 45, 45, 45, 1, 1, 1, 1, 1, 1] [2018-10-04 09:51:13,813 INFO L423 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:51:13,813 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:51:13,813 INFO L82 PathProgramCache]: Analyzing trace with hash -548899986, now seen corresponding path program 45 times [2018-10-04 09:51:13,813 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:51:13,813 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:51:13,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:13,814 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:51:13,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:13,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:51:14,218 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:51:14,605 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:51:14,722 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:14,723 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:51:14,723 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:51:14,730 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:51:14,790 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2018-10-04 09:51:14,790 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:51:14,793 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:51:15,705 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:15,743 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:51:15,743 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-10-04 09:51:15,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-04 09:51:15,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-04 09:51:15,744 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:51:15,744 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand 48 states. [2018-10-04 09:51:16,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:51:16,125 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2018-10-04 09:51:16,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-04 09:51:16,126 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 186 [2018-10-04 09:51:16,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:51:16,126 INFO L225 Difference]: With dead ends: 193 [2018-10-04 09:51:16,127 INFO L226 Difference]: Without dead ends: 191 [2018-10-04 09:51:16,127 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 0.6s impTime 18 [2018-10-04 09:51:16,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-10-04 09:51:16,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-10-04 09:51:16,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-10-04 09:51:16,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 191 transitions. [2018-10-04 09:51:16,130 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 191 transitions. Word has length 186 [2018-10-04 09:51:16,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:51:16,131 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 191 transitions. [2018-10-04 09:51:16,131 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-04 09:51:16,131 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 191 transitions. [2018-10-04 09:51:16,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-10-04 09:51:16,132 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:51:16,132 INFO L375 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 1, 1, 1, 1, 1, 1] [2018-10-04 09:51:16,132 INFO L423 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:51:16,132 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:51:16,133 INFO L82 PathProgramCache]: Analyzing trace with hash 943086104, now seen corresponding path program 46 times [2018-10-04 09:51:16,133 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:51:16,133 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:51:16,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:16,133 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:51:16,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:16,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:51:16,624 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:51:16,991 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:51:17,110 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:17,111 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:51:17,111 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 [2018-10-04 09:51:17,119 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:51:17,156 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:51:17,157 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:51:17,160 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:51:17,681 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:17,702 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:51:17,702 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-10-04 09:51:17,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-04 09:51:17,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-04 09:51:17,703 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:51:17,703 INFO L87 Difference]: Start difference. First operand 191 states and 191 transitions. Second operand 49 states. [2018-10-04 09:51:17,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:51:17,779 INFO L93 Difference]: Finished difference Result 197 states and 197 transitions. [2018-10-04 09:51:17,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-04 09:51:17,779 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 190 [2018-10-04 09:51:17,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:51:17,780 INFO L225 Difference]: With dead ends: 197 [2018-10-04 09:51:17,780 INFO L226 Difference]: Without dead ends: 195 [2018-10-04 09:51:17,781 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.6s impTime 19 [2018-10-04 09:51:17,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-10-04 09:51:17,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-10-04 09:51:17,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-10-04 09:51:17,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 195 transitions. [2018-10-04 09:51:17,784 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 195 transitions. Word has length 190 [2018-10-04 09:51:17,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:51:17,785 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 195 transitions. [2018-10-04 09:51:17,785 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-04 09:51:17,785 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 195 transitions. [2018-10-04 09:51:17,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-10-04 09:51:17,786 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:51:17,786 INFO L375 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 1, 1, 1, 1, 1, 1] [2018-10-04 09:51:17,786 INFO L423 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:51:17,786 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:51:17,787 INFO L82 PathProgramCache]: Analyzing trace with hash 85777346, now seen corresponding path program 47 times [2018-10-04 09:51:17,787 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:51:17,787 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:51:17,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:17,788 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:51:17,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:17,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:51:18,327 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:51:18,661 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:51:19,090 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:19,090 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:51:19,090 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:51:19,098 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:51:19,159 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2018-10-04 09:51:19,159 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:51:19,163 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:51:19,654 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:19,674 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:51:19,674 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-10-04 09:51:19,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-04 09:51:19,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-04 09:51:19,675 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:51:19,675 INFO L87 Difference]: Start difference. First operand 195 states and 195 transitions. Second operand 50 states. [2018-10-04 09:51:19,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:51:19,794 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2018-10-04 09:51:19,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-04 09:51:19,794 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 194 [2018-10-04 09:51:19,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:51:19,795 INFO L225 Difference]: With dead ends: 201 [2018-10-04 09:51:19,795 INFO L226 Difference]: Without dead ends: 199 [2018-10-04 09:51:19,795 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.0s impTime 20 [2018-10-04 09:51:19,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-10-04 09:51:19,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-10-04 09:51:19,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-10-04 09:51:19,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 199 transitions. [2018-10-04 09:51:19,799 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 199 transitions. Word has length 194 [2018-10-04 09:51:19,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:51:19,800 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 199 transitions. [2018-10-04 09:51:19,800 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-04 09:51:19,800 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 199 transitions. [2018-10-04 09:51:19,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-04 09:51:19,801 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:51:19,801 INFO L375 BasicCegarLoop]: trace histogram [48, 48, 48, 48, 1, 1, 1, 1, 1, 1] [2018-10-04 09:51:19,801 INFO L423 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:51:19,801 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:51:19,802 INFO L82 PathProgramCache]: Analyzing trace with hash 305559660, now seen corresponding path program 48 times [2018-10-04 09:51:19,802 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:51:19,802 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:51:19,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:19,802 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:51:19,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:19,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:51:20,294 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:51:20,493 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:51:20,880 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:20,880 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:51:20,881 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 [2018-10-04 09:51:20,888 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:51:20,948 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-10-04 09:51:20,948 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:51:20,951 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:51:21,443 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:21,464 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:51:21,465 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-10-04 09:51:21,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-04 09:51:21,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-04 09:51:21,465 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:51:21,466 INFO L87 Difference]: Start difference. First operand 199 states and 199 transitions. Second operand 51 states. [2018-10-04 09:51:21,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:51:21,583 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2018-10-04 09:51:21,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-04 09:51:21,584 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 198 [2018-10-04 09:51:21,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:51:21,585 INFO L225 Difference]: With dead ends: 205 [2018-10-04 09:51:21,585 INFO L226 Difference]: Without dead ends: 203 [2018-10-04 09:51:21,586 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 0.7s impTime 21 [2018-10-04 09:51:21,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-10-04 09:51:21,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-10-04 09:51:21,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-10-04 09:51:21,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2018-10-04 09:51:21,588 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 198 [2018-10-04 09:51:21,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:51:21,588 INFO L480 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2018-10-04 09:51:21,588 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-04 09:51:21,588 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2018-10-04 09:51:21,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-10-04 09:51:21,589 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:51:21,589 INFO L375 BasicCegarLoop]: trace histogram [49, 49, 49, 49, 1, 1, 1, 1, 1, 1] [2018-10-04 09:51:21,589 INFO L423 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:51:21,590 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:51:21,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1971474410, now seen corresponding path program 49 times [2018-10-04 09:51:21,590 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:51:21,590 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:51:21,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:21,590 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:51:21,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:21,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:51:22,205 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:51:22,618 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:51:23,190 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:51:23,218 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:23,219 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:51:23,219 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 [2018-10-04 09:51:23,225 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:51:23,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:51:23,266 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:51:23,573 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:23,592 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:51:23,593 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-10-04 09:51:23,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-04 09:51:23,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-04 09:51:23,594 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:51:23,594 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand 52 states. [2018-10-04 09:51:23,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:51:23,734 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2018-10-04 09:51:23,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-04 09:51:23,734 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 202 [2018-10-04 09:51:23,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:51:23,736 INFO L225 Difference]: With dead ends: 209 [2018-10-04 09:51:23,736 INFO L226 Difference]: Without dead ends: 207 [2018-10-04 09:51:23,737 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.3s impTime 7 [2018-10-04 09:51:23,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-10-04 09:51:23,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-10-04 09:51:23,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-10-04 09:51:23,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 207 transitions. [2018-10-04 09:51:23,740 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 207 transitions. Word has length 202 [2018-10-04 09:51:23,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:51:23,740 INFO L480 AbstractCegarLoop]: Abstraction has 207 states and 207 transitions. [2018-10-04 09:51:23,740 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-04 09:51:23,740 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 207 transitions. [2018-10-04 09:51:23,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-10-04 09:51:23,741 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:51:23,742 INFO L375 BasicCegarLoop]: trace histogram [50, 50, 50, 50, 1, 1, 1, 1, 1, 1] [2018-10-04 09:51:23,742 INFO L423 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:51:23,742 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:51:23,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1750269248, now seen corresponding path program 50 times [2018-10-04 09:51:23,742 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:51:23,742 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:51:23,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:23,743 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:51:23,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:23,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:51:24,060 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:51:24,266 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:51:24,591 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:51:24,645 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:24,645 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:51:24,645 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:51:24,653 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:51:24,705 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:51:24,705 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:51:24,709 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:51:25,385 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:25,405 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:51:25,405 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-10-04 09:51:25,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-04 09:51:25,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-04 09:51:25,406 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:51:25,406 INFO L87 Difference]: Start difference. First operand 207 states and 207 transitions. Second operand 53 states. [2018-10-04 09:51:25,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:51:25,502 INFO L93 Difference]: Finished difference Result 213 states and 213 transitions. [2018-10-04 09:51:25,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-04 09:51:25,502 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 206 [2018-10-04 09:51:25,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:51:25,504 INFO L225 Difference]: With dead ends: 213 [2018-10-04 09:51:25,504 INFO L226 Difference]: Without dead ends: 211 [2018-10-04 09:51:25,505 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.6s impTime 8 [2018-10-04 09:51:25,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-10-04 09:51:25,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-10-04 09:51:25,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-10-04 09:51:25,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 211 transitions. [2018-10-04 09:51:25,508 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 211 transitions. Word has length 206 [2018-10-04 09:51:25,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:51:25,508 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 211 transitions. [2018-10-04 09:51:25,508 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-04 09:51:25,508 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 211 transitions. [2018-10-04 09:51:25,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-10-04 09:51:25,509 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:51:25,510 INFO L375 BasicCegarLoop]: trace histogram [51, 51, 51, 51, 1, 1, 1, 1, 1, 1] [2018-10-04 09:51:25,510 INFO L423 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:51:25,510 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:51:25,510 INFO L82 PathProgramCache]: Analyzing trace with hash 37679210, now seen corresponding path program 51 times [2018-10-04 09:51:25,510 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:51:25,510 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:51:25,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:25,511 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:51:25,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:25,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:51:26,019 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:51:26,191 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:51:26,857 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:51:26,973 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:26,973 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:51:26,973 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:51:26,983 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:51:27,051 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2018-10-04 09:51:27,051 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:51:27,054 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:51:28,042 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:28,067 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:51:28,068 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-10-04 09:51:28,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-04 09:51:28,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-04 09:51:28,069 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:51:28,069 INFO L87 Difference]: Start difference. First operand 211 states and 211 transitions. Second operand 54 states. [2018-10-04 09:51:28,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:51:28,235 INFO L93 Difference]: Finished difference Result 217 states and 217 transitions. [2018-10-04 09:51:28,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-04 09:51:28,235 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 210 [2018-10-04 09:51:28,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:51:28,236 INFO L225 Difference]: With dead ends: 217 [2018-10-04 09:51:28,236 INFO L226 Difference]: Without dead ends: 215 [2018-10-04 09:51:28,236 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.0s impTime 9 [2018-10-04 09:51:28,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-10-04 09:51:28,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-10-04 09:51:28,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-10-04 09:51:28,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 215 transitions. [2018-10-04 09:51:28,238 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 215 transitions. Word has length 210 [2018-10-04 09:51:28,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:51:28,238 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 215 transitions. [2018-10-04 09:51:28,239 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-04 09:51:28,239 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 215 transitions. [2018-10-04 09:51:28,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-10-04 09:51:28,240 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:51:28,240 INFO L375 BasicCegarLoop]: trace histogram [52, 52, 52, 52, 1, 1, 1, 1, 1, 1] [2018-10-04 09:51:28,240 INFO L423 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:51:28,240 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:51:28,241 INFO L82 PathProgramCache]: Analyzing trace with hash -781321964, now seen corresponding path program 52 times [2018-10-04 09:51:28,241 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:51:28,241 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:51:28,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:28,242 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:51:28,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:28,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:51:28,596 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:51:29,372 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:51:30,245 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:51:30,412 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:30,412 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:51:30,412 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 [2018-10-04 09:51:30,420 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:51:30,463 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:51:30,463 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:51:30,466 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:51:30,861 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:30,882 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:51:30,882 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-10-04 09:51:30,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-04 09:51:30,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-04 09:51:30,883 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:51:30,883 INFO L87 Difference]: Start difference. First operand 215 states and 215 transitions. Second operand 55 states. [2018-10-04 09:51:31,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:51:31,041 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2018-10-04 09:51:31,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-04 09:51:31,042 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 214 [2018-10-04 09:51:31,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:51:31,043 INFO L225 Difference]: With dead ends: 221 [2018-10-04 09:51:31,043 INFO L226 Difference]: Without dead ends: 219 [2018-10-04 09:51:31,043 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.8s impTime 10 [2018-10-04 09:51:31,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-10-04 09:51:31,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-10-04 09:51:31,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-10-04 09:51:31,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 219 transitions. [2018-10-04 09:51:31,045 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 219 transitions. Word has length 214 [2018-10-04 09:51:31,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:51:31,046 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 219 transitions. [2018-10-04 09:51:31,046 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-04 09:51:31,046 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 219 transitions. [2018-10-04 09:51:31,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-10-04 09:51:31,047 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:51:31,047 INFO L375 BasicCegarLoop]: trace histogram [53, 53, 53, 53, 1, 1, 1, 1, 1, 1] [2018-10-04 09:51:31,047 INFO L423 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:51:31,048 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:51:31,048 INFO L82 PathProgramCache]: Analyzing trace with hash -348873538, now seen corresponding path program 53 times [2018-10-04 09:51:31,048 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:51:31,048 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:51:31,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:31,049 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:51:31,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:31,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:51:31,343 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:51:31,982 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:51:32,553 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:51:32,762 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:32,762 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:51:32,762 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 [2018-10-04 09:51:32,784 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:51:32,853 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2018-10-04 09:51:32,853 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:51:32,856 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:51:33,219 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:33,239 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:51:33,239 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-10-04 09:51:33,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-04 09:51:33,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-04 09:51:33,240 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:51:33,240 INFO L87 Difference]: Start difference. First operand 219 states and 219 transitions. Second operand 56 states. [2018-10-04 09:51:33,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:51:33,384 INFO L93 Difference]: Finished difference Result 225 states and 225 transitions. [2018-10-04 09:51:33,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-04 09:51:33,384 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 218 [2018-10-04 09:51:33,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:51:33,386 INFO L225 Difference]: With dead ends: 225 [2018-10-04 09:51:33,386 INFO L226 Difference]: Without dead ends: 223 [2018-10-04 09:51:33,386 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.4s impTime 11 [2018-10-04 09:51:33,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-10-04 09:51:33,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-10-04 09:51:33,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-10-04 09:51:33,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 223 transitions. [2018-10-04 09:51:33,389 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 223 transitions. Word has length 218 [2018-10-04 09:51:33,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:51:33,389 INFO L480 AbstractCegarLoop]: Abstraction has 223 states and 223 transitions. [2018-10-04 09:51:33,389 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-04 09:51:33,389 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 223 transitions. [2018-10-04 09:51:33,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-10-04 09:51:33,390 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:51:33,390 INFO L375 BasicCegarLoop]: trace histogram [54, 54, 54, 54, 1, 1, 1, 1, 1, 1] [2018-10-04 09:51:33,390 INFO L423 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:51:33,391 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:51:33,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1269998744, now seen corresponding path program 54 times [2018-10-04 09:51:33,391 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:51:33,391 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:51:33,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:33,391 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:51:33,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:33,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:51:33,822 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:51:34,191 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:51:34,598 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:51:34,853 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:34,854 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:51:34,854 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 [2018-10-04 09:51:34,860 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:51:34,932 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2018-10-04 09:51:34,932 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:51:34,935 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:51:35,362 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:35,381 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:51:35,382 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2018-10-04 09:51:35,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-04 09:51:35,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-04 09:51:35,383 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:51:35,383 INFO L87 Difference]: Start difference. First operand 223 states and 223 transitions. Second operand 57 states. [2018-10-04 09:51:35,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:51:35,521 INFO L93 Difference]: Finished difference Result 229 states and 229 transitions. [2018-10-04 09:51:35,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-04 09:51:35,522 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 222 [2018-10-04 09:51:35,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:51:35,523 INFO L225 Difference]: With dead ends: 229 [2018-10-04 09:51:35,523 INFO L226 Difference]: Without dead ends: 227 [2018-10-04 09:51:35,524 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.1s impTime 12 [2018-10-04 09:51:35,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-10-04 09:51:35,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-10-04 09:51:35,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-10-04 09:51:35,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 227 transitions. [2018-10-04 09:51:35,526 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 227 transitions. Word has length 222 [2018-10-04 09:51:35,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:51:35,527 INFO L480 AbstractCegarLoop]: Abstraction has 227 states and 227 transitions. [2018-10-04 09:51:35,527 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-04 09:51:35,527 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 227 transitions. [2018-10-04 09:51:35,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-10-04 09:51:35,528 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:51:35,528 INFO L375 BasicCegarLoop]: trace histogram [55, 55, 55, 55, 1, 1, 1, 1, 1, 1] [2018-10-04 09:51:35,528 INFO L423 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:51:35,529 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:51:35,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1338854126, now seen corresponding path program 55 times [2018-10-04 09:51:35,529 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:51:35,529 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:51:35,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:35,530 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:51:35,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:35,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:51:35,796 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:51:36,194 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:51:37,036 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:51:37,341 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:37,341 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:51:37,341 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 [2018-10-04 09:51:37,350 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:51:37,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:51:37,393 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:51:37,769 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:37,789 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:51:37,789 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-10-04 09:51:37,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-04 09:51:37,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-04 09:51:37,790 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:51:37,790 INFO L87 Difference]: Start difference. First operand 227 states and 227 transitions. Second operand 58 states. [2018-10-04 09:51:37,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:51:37,948 INFO L93 Difference]: Finished difference Result 233 states and 233 transitions. [2018-10-04 09:51:37,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-04 09:51:37,949 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 226 [2018-10-04 09:51:37,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:51:37,951 INFO L225 Difference]: With dead ends: 233 [2018-10-04 09:51:37,951 INFO L226 Difference]: Without dead ends: 231 [2018-10-04 09:51:37,951 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.5s impTime 13 [2018-10-04 09:51:37,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-10-04 09:51:37,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2018-10-04 09:51:37,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-10-04 09:51:37,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 231 transitions. [2018-10-04 09:51:37,954 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 231 transitions. Word has length 226 [2018-10-04 09:51:37,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:51:37,955 INFO L480 AbstractCegarLoop]: Abstraction has 231 states and 231 transitions. [2018-10-04 09:51:37,955 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-04 09:51:37,955 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 231 transitions. [2018-10-04 09:51:37,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-10-04 09:51:37,956 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:51:37,956 INFO L375 BasicCegarLoop]: trace histogram [56, 56, 56, 56, 1, 1, 1, 1, 1, 1] [2018-10-04 09:51:37,956 INFO L423 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:51:37,956 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:51:37,957 INFO L82 PathProgramCache]: Analyzing trace with hash 555690428, now seen corresponding path program 56 times [2018-10-04 09:51:37,957 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:51:37,957 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:51:37,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:37,957 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:51:37,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:37,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:51:38,201 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:51:38,609 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:51:39,213 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:51:39,588 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:39,589 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:51:39,589 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:51:39,596 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:51:39,648 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:51:39,648 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:51:39,652 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:51:40,137 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:40,158 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:51:40,158 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-10-04 09:51:40,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-04 09:51:40,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-04 09:51:40,159 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:51:40,159 INFO L87 Difference]: Start difference. First operand 231 states and 231 transitions. Second operand 59 states. [2018-10-04 09:51:40,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:51:40,349 INFO L93 Difference]: Finished difference Result 237 states and 237 transitions. [2018-10-04 09:51:40,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-04 09:51:40,350 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 230 [2018-10-04 09:51:40,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:51:40,351 INFO L225 Difference]: With dead ends: 237 [2018-10-04 09:51:40,351 INFO L226 Difference]: Without dead ends: 235 [2018-10-04 09:51:40,352 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.3s impTime 14 [2018-10-04 09:51:40,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-10-04 09:51:40,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-10-04 09:51:40,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-10-04 09:51:40,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 235 transitions. [2018-10-04 09:51:40,355 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 235 transitions. Word has length 230 [2018-10-04 09:51:40,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:51:40,355 INFO L480 AbstractCegarLoop]: Abstraction has 235 states and 235 transitions. [2018-10-04 09:51:40,355 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-04 09:51:40,355 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 235 transitions. [2018-10-04 09:51:40,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-10-04 09:51:40,356 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:51:40,356 INFO L375 BasicCegarLoop]: trace histogram [57, 57, 57, 57, 1, 1, 1, 1, 1, 1] [2018-10-04 09:51:40,356 INFO L423 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:51:40,357 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:51:40,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1475528346, now seen corresponding path program 57 times [2018-10-04 09:51:40,357 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:51:40,357 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:51:40,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:40,357 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:51:40,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:40,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:51:40,600 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:51:40,806 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:51:41,115 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:51:41,382 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:41,383 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:51:41,383 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 [2018-10-04 09:51:41,390 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:51:41,469 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2018-10-04 09:51:41,469 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:51:41,472 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:51:42,066 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:42,086 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:51:42,086 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-10-04 09:51:42,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-04 09:51:42,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-04 09:51:42,087 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:51:42,087 INFO L87 Difference]: Start difference. First operand 235 states and 235 transitions. Second operand 60 states. [2018-10-04 09:51:42,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:51:42,246 INFO L93 Difference]: Finished difference Result 241 states and 241 transitions. [2018-10-04 09:51:42,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-04 09:51:42,246 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 234 [2018-10-04 09:51:42,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:51:42,247 INFO L225 Difference]: With dead ends: 241 [2018-10-04 09:51:42,247 INFO L226 Difference]: Without dead ends: 239 [2018-10-04 09:51:42,247 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 0.7s impTime 15 [2018-10-04 09:51:42,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-10-04 09:51:42,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2018-10-04 09:51:42,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-10-04 09:51:42,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2018-10-04 09:51:42,250 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 234 [2018-10-04 09:51:42,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:51:42,250 INFO L480 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2018-10-04 09:51:42,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-04 09:51:42,250 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2018-10-04 09:51:42,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-10-04 09:51:42,251 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:51:42,251 INFO L375 BasicCegarLoop]: trace histogram [58, 58, 58, 58, 1, 1, 1, 1, 1, 1] [2018-10-04 09:51:42,252 INFO L423 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:51:42,252 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:51:42,252 INFO L82 PathProgramCache]: Analyzing trace with hash -457743344, now seen corresponding path program 58 times [2018-10-04 09:51:42,252 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:51:42,252 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:51:42,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:42,252 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:51:42,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:42,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:51:42,598 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:51:42,916 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:51:43,146 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:51:43,397 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 0 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:43,397 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:51:43,397 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 [2018-10-04 09:51:43,407 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:51:43,453 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:51:43,453 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:51:43,457 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:51:43,911 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 0 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:43,931 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:51:43,932 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-10-04 09:51:43,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-10-04 09:51:43,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-10-04 09:51:43,933 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:51:43,933 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand 61 states. [2018-10-04 09:51:44,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:51:44,065 INFO L93 Difference]: Finished difference Result 245 states and 245 transitions. [2018-10-04 09:51:44,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-04 09:51:44,065 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 238 [2018-10-04 09:51:44,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:51:44,066 INFO L225 Difference]: With dead ends: 245 [2018-10-04 09:51:44,067 INFO L226 Difference]: Without dead ends: 243 [2018-10-04 09:51:44,067 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.8s impTime 16 [2018-10-04 09:51:44,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-10-04 09:51:44,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2018-10-04 09:51:44,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-10-04 09:51:44,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 243 transitions. [2018-10-04 09:51:44,069 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 243 transitions. Word has length 238 [2018-10-04 09:51:44,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:51:44,069 INFO L480 AbstractCegarLoop]: Abstraction has 243 states and 243 transitions. [2018-10-04 09:51:44,069 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-10-04 09:51:44,069 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 243 transitions. [2018-10-04 09:51:44,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-10-04 09:51:44,070 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:51:44,070 INFO L375 BasicCegarLoop]: trace histogram [59, 59, 59, 59, 1, 1, 1, 1, 1, 1] [2018-10-04 09:51:44,070 INFO L423 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:51:44,071 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:51:44,071 INFO L82 PathProgramCache]: Analyzing trace with hash 362293690, now seen corresponding path program 59 times [2018-10-04 09:51:44,071 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:51:44,071 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:51:44,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:44,072 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:51:44,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:44,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:51:44,371 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:51:44,660 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:51:45,140 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:51:45,586 INFO L134 CoverageAnalysis]: Checked inductivity of 6903 backedges. 0 proven. 6903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:45,586 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:51:45,586 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 [2018-10-04 09:51:45,593 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:51:45,671 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2018-10-04 09:51:45,671 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:51:45,674 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:51:46,055 INFO L134 CoverageAnalysis]: Checked inductivity of 6903 backedges. 0 proven. 6903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:46,075 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:51:46,075 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-10-04 09:51:46,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-04 09:51:46,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-04 09:51:46,076 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:51:46,076 INFO L87 Difference]: Start difference. First operand 243 states and 243 transitions. Second operand 62 states. [2018-10-04 09:51:46,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:51:46,261 INFO L93 Difference]: Finished difference Result 249 states and 249 transitions. [2018-10-04 09:51:46,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-04 09:51:46,262 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 242 [2018-10-04 09:51:46,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:51:46,263 INFO L225 Difference]: With dead ends: 249 [2018-10-04 09:51:46,263 INFO L226 Difference]: Without dead ends: 247 [2018-10-04 09:51:46,263 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.2s impTime 17 [2018-10-04 09:51:46,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-10-04 09:51:46,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2018-10-04 09:51:46,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-10-04 09:51:46,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 247 transitions. [2018-10-04 09:51:46,266 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 247 transitions. Word has length 242 [2018-10-04 09:51:46,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:51:46,266 INFO L480 AbstractCegarLoop]: Abstraction has 247 states and 247 transitions. [2018-10-04 09:51:46,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-04 09:51:46,267 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 247 transitions. [2018-10-04 09:51:46,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-10-04 09:51:46,268 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:51:46,268 INFO L375 BasicCegarLoop]: trace histogram [60, 60, 60, 60, 1, 1, 1, 1, 1, 1] [2018-10-04 09:51:46,268 INFO L423 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:51:46,268 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:51:46,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1209398684, now seen corresponding path program 60 times [2018-10-04 09:51:46,269 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:51:46,269 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:51:46,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:46,269 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:51:46,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:46,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:51:46,588 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:51:47,029 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:51:47,454 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:51:48,028 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:48,028 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:51:48,028 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 [2018-10-04 09:51:48,036 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:51:48,116 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2018-10-04 09:51:48,117 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:51:48,120 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:51:48,523 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:48,544 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:51:48,544 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2018-10-04 09:51:48,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-04 09:51:48,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-04 09:51:48,545 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:51:48,545 INFO L87 Difference]: Start difference. First operand 247 states and 247 transitions. Second operand 63 states. [2018-10-04 09:51:48,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:51:48,718 INFO L93 Difference]: Finished difference Result 253 states and 253 transitions. [2018-10-04 09:51:48,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-04 09:51:48,718 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 246 [2018-10-04 09:51:48,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:51:48,720 INFO L225 Difference]: With dead ends: 253 [2018-10-04 09:51:48,720 INFO L226 Difference]: Without dead ends: 251 [2018-10-04 09:51:48,720 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.4s impTime 18 [2018-10-04 09:51:48,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-10-04 09:51:48,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2018-10-04 09:51:48,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-10-04 09:51:48,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 251 transitions. [2018-10-04 09:51:48,722 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 251 transitions. Word has length 246 [2018-10-04 09:51:48,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:51:48,722 INFO L480 AbstractCegarLoop]: Abstraction has 251 states and 251 transitions. [2018-10-04 09:51:48,722 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-04 09:51:48,722 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 251 transitions. [2018-10-04 09:51:48,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-10-04 09:51:48,723 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:51:48,723 INFO L375 BasicCegarLoop]: trace histogram [61, 61, 61, 61, 1, 1, 1, 1, 1, 1] [2018-10-04 09:51:48,724 INFO L423 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:51:48,724 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:51:48,724 INFO L82 PathProgramCache]: Analyzing trace with hash 665290254, now seen corresponding path program 61 times [2018-10-04 09:51:48,724 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:51:48,724 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:51:48,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:48,725 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:51:48,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:48,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:51:49,058 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:51:49,229 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:51:49,585 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:51:50,030 INFO L134 CoverageAnalysis]: Checked inductivity of 7381 backedges. 0 proven. 7381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:50,030 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:51:50,030 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 [2018-10-04 09:51:50,039 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:51:50,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:51:50,089 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:51:50,484 INFO L134 CoverageAnalysis]: Checked inductivity of 7381 backedges. 0 proven. 7381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:50,505 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:51:50,505 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-10-04 09:51:50,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-04 09:51:50,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-04 09:51:50,506 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:51:50,506 INFO L87 Difference]: Start difference. First operand 251 states and 251 transitions. Second operand 64 states. [2018-10-04 09:51:50,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:51:50,669 INFO L93 Difference]: Finished difference Result 257 states and 257 transitions. [2018-10-04 09:51:50,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-04 09:51:50,670 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 250 [2018-10-04 09:51:50,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:51:50,671 INFO L225 Difference]: With dead ends: 257 [2018-10-04 09:51:50,672 INFO L226 Difference]: Without dead ends: 255 [2018-10-04 09:51:50,672 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 0.9s impTime 19 [2018-10-04 09:51:50,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-10-04 09:51:50,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2018-10-04 09:51:50,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-10-04 09:51:50,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 255 transitions. [2018-10-04 09:51:50,675 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 255 transitions. Word has length 250 [2018-10-04 09:51:50,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:51:50,675 INFO L480 AbstractCegarLoop]: Abstraction has 255 states and 255 transitions. [2018-10-04 09:51:50,675 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-04 09:51:50,675 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 255 transitions. [2018-10-04 09:51:50,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-10-04 09:51:50,676 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:51:50,676 INFO L375 BasicCegarLoop]: trace histogram [62, 62, 62, 62, 1, 1, 1, 1, 1, 1] [2018-10-04 09:51:50,676 INFO L423 AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:51:50,676 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:51:50,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1066081464, now seen corresponding path program 62 times [2018-10-04 09:51:50,677 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:51:50,677 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:51:50,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:50,677 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:51:50,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:50,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:51:50,914 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:51:51,281 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:51:51,979 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:51:52,304 INFO L134 CoverageAnalysis]: Checked inductivity of 7626 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:52,304 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:51:52,304 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:51:52,312 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:51:52,362 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:51:52,362 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:51:52,365 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:51:52,761 INFO L134 CoverageAnalysis]: Checked inductivity of 7626 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:52,781 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:51:52,781 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-10-04 09:51:52,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-04 09:51:52,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-04 09:51:52,782 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:51:52,782 INFO L87 Difference]: Start difference. First operand 255 states and 255 transitions. Second operand 65 states. [2018-10-04 09:51:52,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:51:52,949 INFO L93 Difference]: Finished difference Result 261 states and 261 transitions. [2018-10-04 09:51:52,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-04 09:51:52,950 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 254 [2018-10-04 09:51:52,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:51:52,951 INFO L225 Difference]: With dead ends: 261 [2018-10-04 09:51:52,951 INFO L226 Difference]: Without dead ends: 259 [2018-10-04 09:51:52,951 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.3s impTime 20 [2018-10-04 09:51:52,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-10-04 09:51:52,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2018-10-04 09:51:52,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-10-04 09:51:52,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 259 transitions. [2018-10-04 09:51:52,954 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 259 transitions. Word has length 254 [2018-10-04 09:51:52,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:51:52,954 INFO L480 AbstractCegarLoop]: Abstraction has 259 states and 259 transitions. [2018-10-04 09:51:52,954 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-04 09:51:52,954 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 259 transitions. [2018-10-04 09:51:52,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-10-04 09:51:52,956 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:51:52,956 INFO L375 BasicCegarLoop]: trace histogram [63, 63, 63, 63, 1, 1, 1, 1, 1, 1] [2018-10-04 09:51:52,956 INFO L423 AbstractCegarLoop]: === Iteration 65 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:51:52,956 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:51:52,956 INFO L82 PathProgramCache]: Analyzing trace with hash -116437406, now seen corresponding path program 63 times [2018-10-04 09:51:52,956 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:51:52,956 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:51:52,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:52,957 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:51:52,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:52,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:51:53,199 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:51:53,590 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:51:54,206 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:51:54,506 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:54,506 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:51:54,506 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 [2018-10-04 09:51:54,516 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:51:54,600 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2018-10-04 09:51:54,600 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:51:54,604 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:51:55,014 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:55,033 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:51:55,033 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-10-04 09:51:55,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-04 09:51:55,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-04 09:51:55,034 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:51:55,034 INFO L87 Difference]: Start difference. First operand 259 states and 259 transitions. Second operand 66 states. [2018-10-04 09:51:55,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:51:55,208 INFO L93 Difference]: Finished difference Result 265 states and 265 transitions. [2018-10-04 09:51:55,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-04 09:51:55,209 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 258 [2018-10-04 09:51:55,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:51:55,210 INFO L225 Difference]: With dead ends: 265 [2018-10-04 09:51:55,211 INFO L226 Difference]: Without dead ends: 263 [2018-10-04 09:51:55,211 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.2s impTime 21 [2018-10-04 09:51:55,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-10-04 09:51:55,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2018-10-04 09:51:55,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2018-10-04 09:51:55,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 263 transitions. [2018-10-04 09:51:55,215 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 263 transitions. Word has length 258 [2018-10-04 09:51:55,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:51:55,215 INFO L480 AbstractCegarLoop]: Abstraction has 263 states and 263 transitions. [2018-10-04 09:51:55,215 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-04 09:51:55,216 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 263 transitions. [2018-10-04 09:51:55,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-10-04 09:51:55,217 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:51:55,217 INFO L375 BasicCegarLoop]: trace histogram [64, 64, 64, 64, 1, 1, 1, 1, 1, 1] [2018-10-04 09:51:55,217 INFO L423 AbstractCegarLoop]: === Iteration 66 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:51:55,217 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:51:55,218 INFO L82 PathProgramCache]: Analyzing trace with hash 208575244, now seen corresponding path program 64 times [2018-10-04 09:51:55,218 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:51:55,218 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:51:55,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:55,218 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:51:55,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:55,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:51:55,491 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:51:55,843 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:51:56,043 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:51:56,497 INFO L134 CoverageAnalysis]: Checked inductivity of 8128 backedges. 0 proven. 8128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:56,497 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:51:56,497 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 [2018-10-04 09:51:56,506 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:51:56,555 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:51:56,556 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:51:56,559 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:51:57,064 INFO L134 CoverageAnalysis]: Checked inductivity of 8128 backedges. 0 proven. 8128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:57,085 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:51:57,086 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-10-04 09:51:57,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-04 09:51:57,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-04 09:51:57,087 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:51:57,087 INFO L87 Difference]: Start difference. First operand 263 states and 263 transitions. Second operand 67 states. [2018-10-04 09:51:57,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:51:57,371 INFO L93 Difference]: Finished difference Result 269 states and 269 transitions. [2018-10-04 09:51:57,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-04 09:51:57,372 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 262 [2018-10-04 09:51:57,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:51:57,373 INFO L225 Difference]: With dead ends: 269 [2018-10-04 09:51:57,373 INFO L226 Difference]: Without dead ends: 267 [2018-10-04 09:51:57,373 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 0.9s impTime 22 [2018-10-04 09:51:57,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-10-04 09:51:57,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2018-10-04 09:51:57,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2018-10-04 09:51:57,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 267 transitions. [2018-10-04 09:51:57,377 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 267 transitions. Word has length 262 [2018-10-04 09:51:57,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:51:57,377 INFO L480 AbstractCegarLoop]: Abstraction has 267 states and 267 transitions. [2018-10-04 09:51:57,377 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-04 09:51:57,378 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 267 transitions. [2018-10-04 09:51:57,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-10-04 09:51:57,379 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:51:57,379 INFO L375 BasicCegarLoop]: trace histogram [65, 65, 65, 65, 1, 1, 1, 1, 1, 1] [2018-10-04 09:51:57,379 INFO L423 AbstractCegarLoop]: === Iteration 67 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:51:57,379 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:51:57,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1868332362, now seen corresponding path program 65 times [2018-10-04 09:51:57,380 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:51:57,380 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:51:57,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:57,380 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:51:57,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:51:57,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:51:57,648 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:51:58,214 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:51:58,879 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:51:59,735 INFO L134 CoverageAnalysis]: Checked inductivity of 8385 backedges. 0 proven. 8385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:51:59,735 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:51:59,735 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 [2018-10-04 09:51:59,743 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:51:59,832 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2018-10-04 09:51:59,832 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:51:59,835 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:00,292 INFO L134 CoverageAnalysis]: Checked inductivity of 8385 backedges. 0 proven. 8385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:00,312 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:00,312 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-10-04 09:52:00,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-04 09:52:00,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-04 09:52:00,313 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:00,313 INFO L87 Difference]: Start difference. First operand 267 states and 267 transitions. Second operand 68 states. [2018-10-04 09:52:00,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:00,562 INFO L93 Difference]: Finished difference Result 273 states and 273 transitions. [2018-10-04 09:52:00,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-04 09:52:00,562 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 266 [2018-10-04 09:52:00,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:00,564 INFO L225 Difference]: With dead ends: 273 [2018-10-04 09:52:00,564 INFO L226 Difference]: Without dead ends: 271 [2018-10-04 09:52:00,564 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 1.9s impTime 23 [2018-10-04 09:52:00,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2018-10-04 09:52:00,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2018-10-04 09:52:00,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-10-04 09:52:00,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 271 transitions. [2018-10-04 09:52:00,567 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 271 transitions. Word has length 266 [2018-10-04 09:52:00,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:00,567 INFO L480 AbstractCegarLoop]: Abstraction has 271 states and 271 transitions. [2018-10-04 09:52:00,567 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-04 09:52:00,567 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 271 transitions. [2018-10-04 09:52:00,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-10-04 09:52:00,568 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:00,569 INFO L375 BasicCegarLoop]: trace histogram [66, 66, 66, 66, 1, 1, 1, 1, 1, 1] [2018-10-04 09:52:00,569 INFO L423 AbstractCegarLoop]: === Iteration 68 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:00,569 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:00,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1687648928, now seen corresponding path program 66 times [2018-10-04 09:52:00,569 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:00,570 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:00,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:00,570 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:52:00,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:00,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:00,938 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:52:01,353 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:52:01,571 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:52:01,945 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 0 proven. 8646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:01,945 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:01,945 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 [2018-10-04 09:52:01,952 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:52:02,043 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2018-10-04 09:52:02,044 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:52:02,047 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:02,711 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 0 proven. 8646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:02,731 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:02,731 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 68 [2018-10-04 09:52:02,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-10-04 09:52:02,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-10-04 09:52:02,732 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:02,732 INFO L87 Difference]: Start difference. First operand 271 states and 271 transitions. Second operand 69 states. [2018-10-04 09:52:02,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:02,905 INFO L93 Difference]: Finished difference Result 277 states and 277 transitions. [2018-10-04 09:52:02,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-04 09:52:02,905 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 270 [2018-10-04 09:52:02,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:02,907 INFO L225 Difference]: With dead ends: 277 [2018-10-04 09:52:02,907 INFO L226 Difference]: Without dead ends: 275 [2018-10-04 09:52:02,908 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.0s impTime 24 [2018-10-04 09:52:02,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2018-10-04 09:52:02,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2018-10-04 09:52:02,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2018-10-04 09:52:02,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 275 transitions. [2018-10-04 09:52:02,911 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 275 transitions. Word has length 270 [2018-10-04 09:52:02,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:02,911 INFO L480 AbstractCegarLoop]: Abstraction has 275 states and 275 transitions. [2018-10-04 09:52:02,911 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-10-04 09:52:02,911 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 275 transitions. [2018-10-04 09:52:02,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-10-04 09:52:02,912 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:02,912 INFO L375 BasicCegarLoop]: trace histogram [67, 67, 67, 67, 1, 1, 1, 1, 1, 1] [2018-10-04 09:52:02,912 INFO L423 AbstractCegarLoop]: === Iteration 69 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:02,912 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:02,913 INFO L82 PathProgramCache]: Analyzing trace with hash -516414710, now seen corresponding path program 67 times [2018-10-04 09:52:02,913 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:02,913 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:02,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:02,913 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:52:02,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:02,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:03,160 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:52:03,537 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:52:04,132 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:52:05,009 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:52:05,063 INFO L134 CoverageAnalysis]: Checked inductivity of 8911 backedges. 0 proven. 8911 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:05,063 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:05,063 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 [2018-10-04 09:52:05,070 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:52:05,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:05,124 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:05,574 INFO L134 CoverageAnalysis]: Checked inductivity of 8911 backedges. 0 proven. 8911 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:05,594 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:05,594 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-10-04 09:52:05,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-04 09:52:05,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-04 09:52:05,595 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:05,595 INFO L87 Difference]: Start difference. First operand 275 states and 275 transitions. Second operand 70 states. [2018-10-04 09:52:05,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:05,797 INFO L93 Difference]: Finished difference Result 281 states and 281 transitions. [2018-10-04 09:52:05,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-04 09:52:05,798 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 274 [2018-10-04 09:52:05,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:05,799 INFO L225 Difference]: With dead ends: 281 [2018-10-04 09:52:05,799 INFO L226 Difference]: Without dead ends: 279 [2018-10-04 09:52:05,800 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.7s impTime 8 [2018-10-04 09:52:05,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2018-10-04 09:52:05,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2018-10-04 09:52:05,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2018-10-04 09:52:05,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 279 transitions. [2018-10-04 09:52:05,804 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 279 transitions. Word has length 274 [2018-10-04 09:52:05,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:05,804 INFO L480 AbstractCegarLoop]: Abstraction has 279 states and 279 transitions. [2018-10-04 09:52:05,804 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-04 09:52:05,805 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 279 transitions. [2018-10-04 09:52:05,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-10-04 09:52:05,806 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:05,806 INFO L375 BasicCegarLoop]: trace histogram [68, 68, 68, 68, 1, 1, 1, 1, 1, 1] [2018-10-04 09:52:05,806 INFO L423 AbstractCegarLoop]: === Iteration 70 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:05,806 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:05,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1431100340, now seen corresponding path program 68 times [2018-10-04 09:52:05,807 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:05,807 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:05,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:05,807 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:52:05,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:05,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:06,029 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:52:06,433 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:52:06,984 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:52:08,167 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:52:08,225 INFO L134 CoverageAnalysis]: Checked inductivity of 9180 backedges. 0 proven. 9180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:08,225 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:08,225 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 [2018-10-04 09:52:08,232 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:52:08,285 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:52:08,286 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:52:08,289 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:08,763 INFO L134 CoverageAnalysis]: Checked inductivity of 9180 backedges. 0 proven. 9180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:08,784 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:08,784 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-10-04 09:52:08,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-04 09:52:08,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-04 09:52:08,785 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:08,785 INFO L87 Difference]: Start difference. First operand 279 states and 279 transitions. Second operand 71 states. [2018-10-04 09:52:09,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:09,002 INFO L93 Difference]: Finished difference Result 285 states and 285 transitions. [2018-10-04 09:52:09,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-04 09:52:09,002 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 278 [2018-10-04 09:52:09,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:09,003 INFO L225 Difference]: With dead ends: 285 [2018-10-04 09:52:09,003 INFO L226 Difference]: Without dead ends: 283 [2018-10-04 09:52:09,003 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.0s impTime 9 [2018-10-04 09:52:09,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-10-04 09:52:09,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2018-10-04 09:52:09,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2018-10-04 09:52:09,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 283 transitions. [2018-10-04 09:52:09,006 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 283 transitions. Word has length 278 [2018-10-04 09:52:09,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:09,007 INFO L480 AbstractCegarLoop]: Abstraction has 283 states and 283 transitions. [2018-10-04 09:52:09,007 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-04 09:52:09,007 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 283 transitions. [2018-10-04 09:52:09,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-10-04 09:52:09,008 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:09,008 INFO L375 BasicCegarLoop]: trace histogram [69, 69, 69, 69, 1, 1, 1, 1, 1, 1] [2018-10-04 09:52:09,008 INFO L423 AbstractCegarLoop]: === Iteration 71 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:09,008 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:09,008 INFO L82 PathProgramCache]: Analyzing trace with hash -912183458, now seen corresponding path program 69 times [2018-10-04 09:52:09,008 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:09,009 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:09,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:09,009 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:52:09,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:09,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:09,195 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:52:09,568 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:52:09,942 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:52:10,256 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:52:10,371 INFO L134 CoverageAnalysis]: Checked inductivity of 9453 backedges. 0 proven. 9453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:10,371 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:10,371 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 [2018-10-04 09:52:10,378 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:52:10,485 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2018-10-04 09:52:10,486 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:52:10,490 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:11,202 INFO L134 CoverageAnalysis]: Checked inductivity of 9453 backedges. 0 proven. 9453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:11,223 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:11,223 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2018-10-04 09:52:11,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-04 09:52:11,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-04 09:52:11,224 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:11,224 INFO L87 Difference]: Start difference. First operand 283 states and 283 transitions. Second operand 72 states. [2018-10-04 09:52:11,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:11,395 INFO L93 Difference]: Finished difference Result 289 states and 289 transitions. [2018-10-04 09:52:11,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-04 09:52:11,396 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 282 [2018-10-04 09:52:11,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:11,397 INFO L225 Difference]: With dead ends: 289 [2018-10-04 09:52:11,398 INFO L226 Difference]: Without dead ends: 287 [2018-10-04 09:52:11,398 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.0s impTime 10 [2018-10-04 09:52:11,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2018-10-04 09:52:11,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2018-10-04 09:52:11,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2018-10-04 09:52:11,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 287 transitions. [2018-10-04 09:52:11,401 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 287 transitions. Word has length 282 [2018-10-04 09:52:11,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:11,401 INFO L480 AbstractCegarLoop]: Abstraction has 287 states and 287 transitions. [2018-10-04 09:52:11,401 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-04 09:52:11,401 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 287 transitions. [2018-10-04 09:52:11,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-10-04 09:52:11,402 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:11,402 INFO L375 BasicCegarLoop]: trace histogram [70, 70, 70, 70, 1, 1, 1, 1, 1, 1] [2018-10-04 09:52:11,402 INFO L423 AbstractCegarLoop]: === Iteration 72 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:11,403 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:11,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1896899064, now seen corresponding path program 70 times [2018-10-04 09:52:11,403 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:11,403 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:11,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:11,404 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:52:11,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:11,571 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:52:11,799 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:52:12,132 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:52:12,942 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:52:13,092 INFO L134 CoverageAnalysis]: Checked inductivity of 9730 backedges. 0 proven. 9730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:13,092 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:13,092 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 [2018-10-04 09:52:13,099 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:52:13,151 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:52:13,151 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:52:13,156 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:13,611 INFO L134 CoverageAnalysis]: Checked inductivity of 9730 backedges. 0 proven. 9730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:13,632 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:13,632 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2018-10-04 09:52:13,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-04 09:52:13,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-04 09:52:13,633 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:13,633 INFO L87 Difference]: Start difference. First operand 287 states and 287 transitions. Second operand 73 states. [2018-10-04 09:52:13,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:13,902 INFO L93 Difference]: Finished difference Result 293 states and 293 transitions. [2018-10-04 09:52:13,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-04 09:52:13,903 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 286 [2018-10-04 09:52:13,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:13,904 INFO L225 Difference]: With dead ends: 293 [2018-10-04 09:52:13,905 INFO L226 Difference]: Without dead ends: 291 [2018-10-04 09:52:13,905 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.3s impTime 11 [2018-10-04 09:52:13,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2018-10-04 09:52:13,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2018-10-04 09:52:13,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2018-10-04 09:52:13,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 291 transitions. [2018-10-04 09:52:13,908 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 291 transitions. Word has length 286 [2018-10-04 09:52:13,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:13,908 INFO L480 AbstractCegarLoop]: Abstraction has 291 states and 291 transitions. [2018-10-04 09:52:13,908 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-04 09:52:13,908 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 291 transitions. [2018-10-04 09:52:13,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-10-04 09:52:13,910 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:13,910 INFO L375 BasicCegarLoop]: trace histogram [71, 71, 71, 71, 1, 1, 1, 1, 1, 1] [2018-10-04 09:52:13,910 INFO L423 AbstractCegarLoop]: === Iteration 73 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:13,910 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:13,910 INFO L82 PathProgramCache]: Analyzing trace with hash 347252658, now seen corresponding path program 71 times [2018-10-04 09:52:13,911 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:13,911 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:13,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:13,911 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:52:13,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:13,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:14,070 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:52:14,275 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:52:14,525 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:52:14,704 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:52:14,812 INFO L134 CoverageAnalysis]: Checked inductivity of 10011 backedges. 0 proven. 10011 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:14,812 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:14,812 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 [2018-10-04 09:52:14,820 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:52:14,921 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 72 check-sat command(s) [2018-10-04 09:52:14,922 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:52:14,925 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:15,401 INFO L134 CoverageAnalysis]: Checked inductivity of 10011 backedges. 0 proven. 10011 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:15,423 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:15,423 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2018-10-04 09:52:15,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-04 09:52:15,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-04 09:52:15,424 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:15,425 INFO L87 Difference]: Start difference. First operand 291 states and 291 transitions. Second operand 74 states. [2018-10-04 09:52:15,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:15,614 INFO L93 Difference]: Finished difference Result 297 states and 297 transitions. [2018-10-04 09:52:15,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-04 09:52:15,614 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 290 [2018-10-04 09:52:15,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:15,615 INFO L225 Difference]: With dead ends: 297 [2018-10-04 09:52:15,615 INFO L226 Difference]: Without dead ends: 295 [2018-10-04 09:52:15,616 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.5s impTime 12 [2018-10-04 09:52:15,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2018-10-04 09:52:15,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2018-10-04 09:52:15,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2018-10-04 09:52:15,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 295 transitions. [2018-10-04 09:52:15,618 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 295 transitions. Word has length 290 [2018-10-04 09:52:15,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:15,618 INFO L480 AbstractCegarLoop]: Abstraction has 295 states and 295 transitions. [2018-10-04 09:52:15,618 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-04 09:52:15,618 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 295 transitions. [2018-10-04 09:52:15,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-10-04 09:52:15,620 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:15,620 INFO L375 BasicCegarLoop]: trace histogram [72, 72, 72, 72, 1, 1, 1, 1, 1, 1] [2018-10-04 09:52:15,620 INFO L423 AbstractCegarLoop]: === Iteration 74 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:15,620 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:15,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1994077092, now seen corresponding path program 72 times [2018-10-04 09:52:15,620 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:15,621 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:15,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:15,621 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:52:15,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:15,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:15,786 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:52:15,963 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:52:16,250 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:52:16,771 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:52:16,958 INFO L134 CoverageAnalysis]: Checked inductivity of 10296 backedges. 0 proven. 10296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:16,958 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:16,958 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 [2018-10-04 09:52:16,965 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:52:17,070 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2018-10-04 09:52:17,070 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:52:17,073 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:17,696 INFO L134 CoverageAnalysis]: Checked inductivity of 10296 backedges. 0 proven. 10296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:17,716 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:17,716 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 74 [2018-10-04 09:52:17,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-10-04 09:52:17,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-10-04 09:52:17,717 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:17,717 INFO L87 Difference]: Start difference. First operand 295 states and 295 transitions. Second operand 75 states. [2018-10-04 09:52:17,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:17,941 INFO L93 Difference]: Finished difference Result 301 states and 301 transitions. [2018-10-04 09:52:17,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-04 09:52:17,942 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 294 [2018-10-04 09:52:17,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:17,943 INFO L225 Difference]: With dead ends: 301 [2018-10-04 09:52:17,943 INFO L226 Difference]: Without dead ends: 299 [2018-10-04 09:52:17,943 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 0.9s impTime 13 [2018-10-04 09:52:17,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2018-10-04 09:52:17,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2018-10-04 09:52:17,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-10-04 09:52:17,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 299 transitions. [2018-10-04 09:52:17,946 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 299 transitions. Word has length 294 [2018-10-04 09:52:17,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:17,946 INFO L480 AbstractCegarLoop]: Abstraction has 299 states and 299 transitions. [2018-10-04 09:52:17,946 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-10-04 09:52:17,947 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 299 transitions. [2018-10-04 09:52:17,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-10-04 09:52:17,948 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:17,948 INFO L375 BasicCegarLoop]: trace histogram [73, 73, 73, 73, 1, 1, 1, 1, 1, 1] [2018-10-04 09:52:17,948 INFO L423 AbstractCegarLoop]: === Iteration 75 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:17,948 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:17,948 INFO L82 PathProgramCache]: Analyzing trace with hash 2034273286, now seen corresponding path program 73 times [2018-10-04 09:52:17,948 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:17,948 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:17,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:17,949 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:52:17,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:17,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:18,120 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:52:18,302 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:52:18,587 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:52:19,094 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:52:19,284 INFO L134 CoverageAnalysis]: Checked inductivity of 10585 backedges. 0 proven. 10585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:19,285 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:19,285 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 [2018-10-04 09:52:19,292 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:52:19,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:19,352 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:19,842 INFO L134 CoverageAnalysis]: Checked inductivity of 10585 backedges. 0 proven. 10585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:19,863 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:19,863 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2018-10-04 09:52:19,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-04 09:52:19,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-04 09:52:19,864 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:19,864 INFO L87 Difference]: Start difference. First operand 299 states and 299 transitions. Second operand 76 states. [2018-10-04 09:52:20,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:20,134 INFO L93 Difference]: Finished difference Result 305 states and 305 transitions. [2018-10-04 09:52:20,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-04 09:52:20,134 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 298 [2018-10-04 09:52:20,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:20,136 INFO L225 Difference]: With dead ends: 305 [2018-10-04 09:52:20,136 INFO L226 Difference]: Without dead ends: 303 [2018-10-04 09:52:20,136 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 0.9s impTime 14 [2018-10-04 09:52:20,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2018-10-04 09:52:20,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2018-10-04 09:52:20,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2018-10-04 09:52:20,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 303 transitions. [2018-10-04 09:52:20,139 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 303 transitions. Word has length 298 [2018-10-04 09:52:20,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:20,139 INFO L480 AbstractCegarLoop]: Abstraction has 303 states and 303 transitions. [2018-10-04 09:52:20,139 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-04 09:52:20,139 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 303 transitions. [2018-10-04 09:52:20,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-10-04 09:52:20,140 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:20,140 INFO L375 BasicCegarLoop]: trace histogram [74, 74, 74, 74, 1, 1, 1, 1, 1, 1] [2018-10-04 09:52:20,140 INFO L423 AbstractCegarLoop]: === Iteration 76 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:20,141 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:20,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1891657392, now seen corresponding path program 74 times [2018-10-04 09:52:20,141 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:20,141 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:20,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:20,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:52:20,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:20,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:20,292 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:52:20,499 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:52:20,773 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:52:20,956 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:52:21,108 INFO L134 CoverageAnalysis]: Checked inductivity of 10878 backedges. 0 proven. 10878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:21,109 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:21,109 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 [2018-10-04 09:52:21,115 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:52:21,172 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:52:21,172 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:52:21,176 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:21,677 INFO L134 CoverageAnalysis]: Checked inductivity of 10878 backedges. 0 proven. 10878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:21,697 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:21,697 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2018-10-04 09:52:21,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-10-04 09:52:21,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-10-04 09:52:21,698 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:21,698 INFO L87 Difference]: Start difference. First operand 303 states and 303 transitions. Second operand 77 states. [2018-10-04 09:52:21,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:21,903 INFO L93 Difference]: Finished difference Result 309 states and 309 transitions. [2018-10-04 09:52:21,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-04 09:52:21,904 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 302 [2018-10-04 09:52:21,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:21,905 INFO L225 Difference]: With dead ends: 309 [2018-10-04 09:52:21,906 INFO L226 Difference]: Without dead ends: 307 [2018-10-04 09:52:21,906 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.6s impTime 15 [2018-10-04 09:52:21,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2018-10-04 09:52:21,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2018-10-04 09:52:21,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2018-10-04 09:52:21,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 307 transitions. [2018-10-04 09:52:21,909 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 307 transitions. Word has length 302 [2018-10-04 09:52:21,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:21,910 INFO L480 AbstractCegarLoop]: Abstraction has 307 states and 307 transitions. [2018-10-04 09:52:21,910 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-10-04 09:52:21,910 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 307 transitions. [2018-10-04 09:52:21,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-10-04 09:52:21,911 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:21,911 INFO L375 BasicCegarLoop]: trace histogram [75, 75, 75, 75, 1, 1, 1, 1, 1, 1] [2018-10-04 09:52:21,911 INFO L423 AbstractCegarLoop]: === Iteration 77 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:21,912 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:21,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1709253542, now seen corresponding path program 75 times [2018-10-04 09:52:21,912 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:21,912 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:21,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:21,913 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:52:21,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:21,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:22,306 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:52:22,542 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:52:23,145 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:52:23,653 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:52:23,972 INFO L134 CoverageAnalysis]: Checked inductivity of 11175 backedges. 0 proven. 11175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:23,973 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:23,973 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:52:23,979 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:52:24,106 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 76 check-sat command(s) [2018-10-04 09:52:24,106 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:52:24,110 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:24,583 INFO L134 CoverageAnalysis]: Checked inductivity of 11175 backedges. 0 proven. 11175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:24,603 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:24,603 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2018-10-04 09:52:24,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-10-04 09:52:24,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-10-04 09:52:24,604 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:24,604 INFO L87 Difference]: Start difference. First operand 307 states and 307 transitions. Second operand 78 states. [2018-10-04 09:52:24,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:24,908 INFO L93 Difference]: Finished difference Result 313 states and 313 transitions. [2018-10-04 09:52:24,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-10-04 09:52:24,908 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 306 [2018-10-04 09:52:24,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:24,910 INFO L225 Difference]: With dead ends: 313 [2018-10-04 09:52:24,910 INFO L226 Difference]: Without dead ends: 311 [2018-10-04 09:52:24,911 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.5s impTime 16 [2018-10-04 09:52:24,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-10-04 09:52:24,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2018-10-04 09:52:24,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2018-10-04 09:52:24,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 311 transitions. [2018-10-04 09:52:24,914 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 311 transitions. Word has length 306 [2018-10-04 09:52:24,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:24,914 INFO L480 AbstractCegarLoop]: Abstraction has 311 states and 311 transitions. [2018-10-04 09:52:24,914 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-10-04 09:52:24,914 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 311 transitions. [2018-10-04 09:52:24,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-10-04 09:52:24,915 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:24,915 INFO L375 BasicCegarLoop]: trace histogram [76, 76, 76, 76, 1, 1, 1, 1, 1, 1] [2018-10-04 09:52:24,916 INFO L423 AbstractCegarLoop]: === Iteration 78 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:24,916 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:24,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1586916612, now seen corresponding path program 76 times [2018-10-04 09:52:24,916 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:24,916 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:24,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:24,917 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:52:24,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:24,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:25,065 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:52:25,277 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:52:25,491 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:52:25,681 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:52:25,875 INFO L134 CoverageAnalysis]: Checked inductivity of 11476 backedges. 0 proven. 11476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:25,875 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:25,875 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:52:25,882 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:52:25,944 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:52:25,944 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:52:25,948 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:26,444 INFO L134 CoverageAnalysis]: Checked inductivity of 11476 backedges. 0 proven. 11476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:26,464 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:26,464 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2018-10-04 09:52:26,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-10-04 09:52:26,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-10-04 09:52:26,465 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:26,466 INFO L87 Difference]: Start difference. First operand 311 states and 311 transitions. Second operand 79 states. [2018-10-04 09:52:26,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:26,700 INFO L93 Difference]: Finished difference Result 317 states and 317 transitions. [2018-10-04 09:52:26,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-10-04 09:52:26,701 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 310 [2018-10-04 09:52:26,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:26,703 INFO L225 Difference]: With dead ends: 317 [2018-10-04 09:52:26,703 INFO L226 Difference]: Without dead ends: 315 [2018-10-04 09:52:26,703 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.6s impTime 17 [2018-10-04 09:52:26,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2018-10-04 09:52:26,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2018-10-04 09:52:26,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2018-10-04 09:52:26,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 315 transitions. [2018-10-04 09:52:26,706 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 315 transitions. Word has length 310 [2018-10-04 09:52:26,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:26,706 INFO L480 AbstractCegarLoop]: Abstraction has 315 states and 315 transitions. [2018-10-04 09:52:26,706 INFO L481 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-10-04 09:52:26,706 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 315 transitions. [2018-10-04 09:52:26,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-10-04 09:52:26,707 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:26,708 INFO L375 BasicCegarLoop]: trace histogram [77, 77, 77, 77, 1, 1, 1, 1, 1, 1] [2018-10-04 09:52:26,708 INFO L423 AbstractCegarLoop]: === Iteration 79 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:26,708 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:26,708 INFO L82 PathProgramCache]: Analyzing trace with hash 102865070, now seen corresponding path program 77 times [2018-10-04 09:52:26,708 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:26,708 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:26,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:26,709 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:52:26,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:26,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:26,882 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:52:27,104 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:52:27,410 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:52:28,187 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:52:28,296 INFO L134 CoverageAnalysis]: Checked inductivity of 11781 backedges. 0 proven. 11781 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:28,296 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:28,297 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 [2018-10-04 09:52:28,303 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:52:28,422 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 78 check-sat command(s) [2018-10-04 09:52:28,422 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:52:28,426 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:28,920 INFO L134 CoverageAnalysis]: Checked inductivity of 11781 backedges. 0 proven. 11781 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:28,940 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:28,940 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2018-10-04 09:52:28,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-04 09:52:28,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-04 09:52:28,941 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:28,941 INFO L87 Difference]: Start difference. First operand 315 states and 315 transitions. Second operand 80 states. [2018-10-04 09:52:29,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:29,208 INFO L93 Difference]: Finished difference Result 321 states and 321 transitions. [2018-10-04 09:52:29,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-10-04 09:52:29,209 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 314 [2018-10-04 09:52:29,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:29,211 INFO L225 Difference]: With dead ends: 321 [2018-10-04 09:52:29,211 INFO L226 Difference]: Without dead ends: 319 [2018-10-04 09:52:29,211 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.2s impTime 17 [2018-10-04 09:52:29,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-10-04 09:52:29,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2018-10-04 09:52:29,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-10-04 09:52:29,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 319 transitions. [2018-10-04 09:52:29,215 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 319 transitions. Word has length 314 [2018-10-04 09:52:29,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:29,215 INFO L480 AbstractCegarLoop]: Abstraction has 319 states and 319 transitions. [2018-10-04 09:52:29,215 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-04 09:52:29,215 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 319 transitions. [2018-10-04 09:52:29,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-10-04 09:52:29,216 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:29,216 INFO L375 BasicCegarLoop]: trace histogram [78, 78, 78, 78, 1, 1, 1, 1, 1, 1] [2018-10-04 09:52:29,216 INFO L423 AbstractCegarLoop]: === Iteration 80 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:29,216 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:29,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1467670360, now seen corresponding path program 78 times [2018-10-04 09:52:29,217 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:29,217 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:29,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:29,217 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:52:29,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:29,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:29,404 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:52:29,639 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:52:30,005 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:52:30,439 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:52:30,572 INFO L134 CoverageAnalysis]: Checked inductivity of 12090 backedges. 0 proven. 12090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:30,572 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:30,572 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 [2018-10-04 09:52:30,580 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:52:30,695 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2018-10-04 09:52:30,695 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:52:30,699 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:31,193 INFO L134 CoverageAnalysis]: Checked inductivity of 12090 backedges. 0 proven. 12090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:31,213 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:31,213 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 80 [2018-10-04 09:52:31,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-10-04 09:52:31,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-10-04 09:52:31,214 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:31,214 INFO L87 Difference]: Start difference. First operand 319 states and 319 transitions. Second operand 81 states. [2018-10-04 09:52:31,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:31,483 INFO L93 Difference]: Finished difference Result 325 states and 325 transitions. [2018-10-04 09:52:31,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-04 09:52:31,483 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 318 [2018-10-04 09:52:31,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:31,484 INFO L225 Difference]: With dead ends: 325 [2018-10-04 09:52:31,484 INFO L226 Difference]: Without dead ends: 323 [2018-10-04 09:52:31,484 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 0.9s impTime 16 [2018-10-04 09:52:31,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2018-10-04 09:52:31,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2018-10-04 09:52:31,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2018-10-04 09:52:31,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 323 transitions. [2018-10-04 09:52:31,488 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 323 transitions. Word has length 318 [2018-10-04 09:52:31,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:31,488 INFO L480 AbstractCegarLoop]: Abstraction has 323 states and 323 transitions. [2018-10-04 09:52:31,488 INFO L481 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-10-04 09:52:31,488 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 323 transitions. [2018-10-04 09:52:31,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-10-04 09:52:31,489 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:31,489 INFO L375 BasicCegarLoop]: trace histogram [79, 79, 79, 79, 1, 1, 1, 1, 1, 1] [2018-10-04 09:52:31,489 INFO L423 AbstractCegarLoop]: === Iteration 81 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:31,490 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:31,490 INFO L82 PathProgramCache]: Analyzing trace with hash 941408514, now seen corresponding path program 79 times [2018-10-04 09:52:31,490 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:31,490 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:31,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:31,490 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:52:31,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:31,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:31,653 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:52:31,931 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:52:32,066 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:52:32,298 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:52:32,574 INFO L134 CoverageAnalysis]: Checked inductivity of 12403 backedges. 0 proven. 12403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:32,574 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:32,575 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 [2018-10-04 09:52:32,582 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:52:32,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:32,644 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:33,434 INFO L134 CoverageAnalysis]: Checked inductivity of 12403 backedges. 0 proven. 12403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:33,454 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:33,454 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2018-10-04 09:52:33,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-10-04 09:52:33,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-10-04 09:52:33,455 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:33,455 INFO L87 Difference]: Start difference. First operand 323 states and 323 transitions. Second operand 82 states. [2018-10-04 09:52:33,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:33,695 INFO L93 Difference]: Finished difference Result 329 states and 329 transitions. [2018-10-04 09:52:33,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-10-04 09:52:33,696 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 322 [2018-10-04 09:52:33,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:33,698 INFO L225 Difference]: With dead ends: 329 [2018-10-04 09:52:33,698 INFO L226 Difference]: Without dead ends: 327 [2018-10-04 09:52:33,698 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 0.6s impTime 20 [2018-10-04 09:52:33,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-10-04 09:52:33,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2018-10-04 09:52:33,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2018-10-04 09:52:33,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 327 transitions. [2018-10-04 09:52:33,702 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 327 transitions. Word has length 322 [2018-10-04 09:52:33,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:33,702 INFO L480 AbstractCegarLoop]: Abstraction has 327 states and 327 transitions. [2018-10-04 09:52:33,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-10-04 09:52:33,702 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 327 transitions. [2018-10-04 09:52:33,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-10-04 09:52:33,703 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:33,703 INFO L375 BasicCegarLoop]: trace histogram [80, 80, 80, 80, 1, 1, 1, 1, 1, 1] [2018-10-04 09:52:33,704 INFO L423 AbstractCegarLoop]: === Iteration 82 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:33,704 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:33,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1279376812, now seen corresponding path program 80 times [2018-10-04 09:52:33,704 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:33,704 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:33,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:33,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:52:33,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:33,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:33,871 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:52:34,073 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:52:34,412 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:52:34,937 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:52:35,414 INFO L134 CoverageAnalysis]: Checked inductivity of 12720 backedges. 0 proven. 12720 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:35,414 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:35,414 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 [2018-10-04 09:52:35,421 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:52:35,482 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:52:35,482 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:52:35,486 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:36,008 INFO L134 CoverageAnalysis]: Checked inductivity of 12720 backedges. 0 proven. 12720 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:36,028 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:36,028 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 82 [2018-10-04 09:52:36,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-10-04 09:52:36,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-10-04 09:52:36,029 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:36,029 INFO L87 Difference]: Start difference. First operand 327 states and 327 transitions. Second operand 83 states. [2018-10-04 09:52:36,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:36,381 INFO L93 Difference]: Finished difference Result 333 states and 333 transitions. [2018-10-04 09:52:36,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-10-04 09:52:36,382 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 326 [2018-10-04 09:52:36,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:36,384 INFO L225 Difference]: With dead ends: 333 [2018-10-04 09:52:36,384 INFO L226 Difference]: Without dead ends: 331 [2018-10-04 09:52:36,384 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.3s impTime 20 [2018-10-04 09:52:36,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2018-10-04 09:52:36,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2018-10-04 09:52:36,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-10-04 09:52:36,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 331 transitions. [2018-10-04 09:52:36,387 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 331 transitions. Word has length 326 [2018-10-04 09:52:36,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:36,387 INFO L480 AbstractCegarLoop]: Abstraction has 331 states and 331 transitions. [2018-10-04 09:52:36,387 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-10-04 09:52:36,387 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 331 transitions. [2018-10-04 09:52:36,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-10-04 09:52:36,388 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:36,388 INFO L375 BasicCegarLoop]: trace histogram [81, 81, 81, 81, 1, 1, 1, 1, 1, 1] [2018-10-04 09:52:36,389 INFO L423 AbstractCegarLoop]: === Iteration 83 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:36,389 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:36,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1763420842, now seen corresponding path program 81 times [2018-10-04 09:52:36,389 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:36,389 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:36,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:36,390 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:52:36,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:36,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:36,575 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:52:36,770 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:52:36,906 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:52:37,578 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:52:37,913 INFO L134 CoverageAnalysis]: Checked inductivity of 13041 backedges. 0 proven. 13041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:37,913 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:37,913 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 [2018-10-04 09:52:37,921 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:52:38,069 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 82 check-sat command(s) [2018-10-04 09:52:38,070 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:52:38,073 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:38,738 INFO L134 CoverageAnalysis]: Checked inductivity of 13041 backedges. 0 proven. 13041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:38,758 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:38,759 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2018-10-04 09:52:38,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-10-04 09:52:38,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-10-04 09:52:38,760 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:38,760 INFO L87 Difference]: Start difference. First operand 331 states and 331 transitions. Second operand 84 states. [2018-10-04 09:52:39,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:39,355 INFO L93 Difference]: Finished difference Result 337 states and 337 transitions. [2018-10-04 09:52:39,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-10-04 09:52:39,355 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 330 [2018-10-04 09:52:39,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:39,357 INFO L225 Difference]: With dead ends: 337 [2018-10-04 09:52:39,357 INFO L226 Difference]: Without dead ends: 335 [2018-10-04 09:52:39,357 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 0.7s impTime 21 [2018-10-04 09:52:39,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2018-10-04 09:52:39,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2018-10-04 09:52:39,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2018-10-04 09:52:39,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 335 transitions. [2018-10-04 09:52:39,361 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 335 transitions. Word has length 330 [2018-10-04 09:52:39,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:39,362 INFO L480 AbstractCegarLoop]: Abstraction has 335 states and 335 transitions. [2018-10-04 09:52:39,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-10-04 09:52:39,362 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 335 transitions. [2018-10-04 09:52:39,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-10-04 09:52:39,364 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:39,364 INFO L375 BasicCegarLoop]: trace histogram [82, 82, 82, 82, 1, 1, 1, 1, 1, 1] [2018-10-04 09:52:39,364 INFO L423 AbstractCegarLoop]: === Iteration 84 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:39,364 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:39,365 INFO L82 PathProgramCache]: Analyzing trace with hash 431949824, now seen corresponding path program 82 times [2018-10-04 09:52:39,365 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:39,365 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:39,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:39,365 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:52:39,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:39,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:40,470 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:52:40,696 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:52:41,011 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:52:41,214 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:52:41,459 INFO L134 CoverageAnalysis]: Checked inductivity of 13366 backedges. 0 proven. 13366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:41,459 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:41,460 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 [2018-10-04 09:52:41,468 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:52:41,534 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:52:41,534 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:52:41,538 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:42,172 INFO L134 CoverageAnalysis]: Checked inductivity of 13366 backedges. 0 proven. 13366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:42,192 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:42,192 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 84 [2018-10-04 09:52:42,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-10-04 09:52:42,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-10-04 09:52:42,194 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:42,194 INFO L87 Difference]: Start difference. First operand 335 states and 335 transitions. Second operand 85 states. [2018-10-04 09:52:42,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:42,471 INFO L93 Difference]: Finished difference Result 341 states and 341 transitions. [2018-10-04 09:52:42,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-10-04 09:52:42,472 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 334 [2018-10-04 09:52:42,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:42,473 INFO L225 Difference]: With dead ends: 341 [2018-10-04 09:52:42,473 INFO L226 Difference]: Without dead ends: 339 [2018-10-04 09:52:42,473 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.3s impTime 23 [2018-10-04 09:52:42,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2018-10-04 09:52:42,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 339. [2018-10-04 09:52:42,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2018-10-04 09:52:42,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 339 transitions. [2018-10-04 09:52:42,476 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 339 transitions. Word has length 334 [2018-10-04 09:52:42,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:42,476 INFO L480 AbstractCegarLoop]: Abstraction has 339 states and 339 transitions. [2018-10-04 09:52:42,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-10-04 09:52:42,476 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 339 transitions. [2018-10-04 09:52:42,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-10-04 09:52:42,477 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:42,477 INFO L375 BasicCegarLoop]: trace histogram [83, 83, 83, 83, 1, 1, 1, 1, 1, 1] [2018-10-04 09:52:42,478 INFO L423 AbstractCegarLoop]: === Iteration 85 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:42,478 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:42,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1967936938, now seen corresponding path program 83 times [2018-10-04 09:52:42,478 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:42,478 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:42,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:42,479 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:52:42,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:42,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:42,653 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:52:42,884 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:52:43,480 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:52:43,687 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:52:43,968 INFO L134 CoverageAnalysis]: Checked inductivity of 13695 backedges. 0 proven. 13695 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:43,968 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:43,969 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 [2018-10-04 09:52:43,976 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:52:44,107 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 84 check-sat command(s) [2018-10-04 09:52:44,107 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:52:44,112 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:44,663 INFO L134 CoverageAnalysis]: Checked inductivity of 13695 backedges. 0 proven. 13695 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:44,683 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:44,684 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2018-10-04 09:52:44,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-10-04 09:52:44,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-10-04 09:52:44,685 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:44,685 INFO L87 Difference]: Start difference. First operand 339 states and 339 transitions. Second operand 86 states. [2018-10-04 09:52:44,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:44,961 INFO L93 Difference]: Finished difference Result 345 states and 345 transitions. [2018-10-04 09:52:44,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-10-04 09:52:44,961 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 338 [2018-10-04 09:52:44,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:44,962 INFO L225 Difference]: With dead ends: 345 [2018-10-04 09:52:44,962 INFO L226 Difference]: Without dead ends: 343 [2018-10-04 09:52:44,963 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.0s impTime 21 [2018-10-04 09:52:44,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2018-10-04 09:52:44,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2018-10-04 09:52:44,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2018-10-04 09:52:44,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 343 transitions. [2018-10-04 09:52:44,965 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 343 transitions. Word has length 338 [2018-10-04 09:52:44,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:44,966 INFO L480 AbstractCegarLoop]: Abstraction has 343 states and 343 transitions. [2018-10-04 09:52:44,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-10-04 09:52:44,966 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 343 transitions. [2018-10-04 09:52:44,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-10-04 09:52:44,967 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:44,968 INFO L375 BasicCegarLoop]: trace histogram [84, 84, 84, 84, 1, 1, 1, 1, 1, 1] [2018-10-04 09:52:44,968 INFO L423 AbstractCegarLoop]: === Iteration 86 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:44,968 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:44,968 INFO L82 PathProgramCache]: Analyzing trace with hash -2000241068, now seen corresponding path program 84 times [2018-10-04 09:52:44,968 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:44,968 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:44,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:44,969 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:52:44,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:44,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:45,160 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:52:45,268 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:52:45,465 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:52:45,833 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:52:46,364 INFO L134 CoverageAnalysis]: Checked inductivity of 14028 backedges. 0 proven. 14028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:46,365 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:46,365 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 [2018-10-04 09:52:46,373 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:52:46,499 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 85 check-sat command(s) [2018-10-04 09:52:46,499 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:52:46,504 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:47,056 INFO L134 CoverageAnalysis]: Checked inductivity of 14028 backedges. 0 proven. 14028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:47,076 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:47,076 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 86 [2018-10-04 09:52:47,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-10-04 09:52:47,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-10-04 09:52:47,078 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:47,078 INFO L87 Difference]: Start difference. First operand 343 states and 343 transitions. Second operand 87 states. [2018-10-04 09:52:47,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:47,439 INFO L93 Difference]: Finished difference Result 349 states and 349 transitions. [2018-10-04 09:52:47,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-10-04 09:52:47,439 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 342 [2018-10-04 09:52:47,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:47,441 INFO L225 Difference]: With dead ends: 349 [2018-10-04 09:52:47,441 INFO L226 Difference]: Without dead ends: 347 [2018-10-04 09:52:47,441 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.0s impTime 24 [2018-10-04 09:52:47,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2018-10-04 09:52:47,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2018-10-04 09:52:47,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2018-10-04 09:52:47,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 347 transitions. [2018-10-04 09:52:47,445 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 347 transitions. Word has length 342 [2018-10-04 09:52:47,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:47,445 INFO L480 AbstractCegarLoop]: Abstraction has 347 states and 347 transitions. [2018-10-04 09:52:47,445 INFO L481 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-10-04 09:52:47,446 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 347 transitions. [2018-10-04 09:52:47,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-10-04 09:52:47,447 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:47,447 INFO L375 BasicCegarLoop]: trace histogram [85, 85, 85, 85, 1, 1, 1, 1, 1, 1] [2018-10-04 09:52:47,447 INFO L423 AbstractCegarLoop]: === Iteration 87 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:47,447 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:47,447 INFO L82 PathProgramCache]: Analyzing trace with hash 304660990, now seen corresponding path program 85 times [2018-10-04 09:52:47,447 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:47,447 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:47,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:47,448 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:52:47,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:47,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:47,664 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:52:47,819 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:52:48,011 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:52:48,793 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:52:49,448 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:52:49,531 INFO L134 CoverageAnalysis]: Checked inductivity of 14365 backedges. 0 proven. 14365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:49,531 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:49,531 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:52:49,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:52:49,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:49,603 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:50,144 INFO L134 CoverageAnalysis]: Checked inductivity of 14365 backedges. 0 proven. 14365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:50,164 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:50,165 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2018-10-04 09:52:50,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-04 09:52:50,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-04 09:52:50,166 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:50,166 INFO L87 Difference]: Start difference. First operand 347 states and 347 transitions. Second operand 88 states. [2018-10-04 09:52:50,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:50,546 INFO L93 Difference]: Finished difference Result 353 states and 353 transitions. [2018-10-04 09:52:50,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-10-04 09:52:50,547 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 346 [2018-10-04 09:52:50,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:50,548 INFO L225 Difference]: With dead ends: 353 [2018-10-04 09:52:50,548 INFO L226 Difference]: Without dead ends: 351 [2018-10-04 09:52:50,548 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.6s impTime 8 [2018-10-04 09:52:50,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2018-10-04 09:52:50,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2018-10-04 09:52:50,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2018-10-04 09:52:50,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 351 transitions. [2018-10-04 09:52:50,552 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 351 transitions. Word has length 346 [2018-10-04 09:52:50,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:50,552 INFO L480 AbstractCegarLoop]: Abstraction has 351 states and 351 transitions. [2018-10-04 09:52:50,552 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-10-04 09:52:50,552 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 351 transitions. [2018-10-04 09:52:50,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-10-04 09:52:50,553 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:50,553 INFO L375 BasicCegarLoop]: trace histogram [86, 86, 86, 86, 1, 1, 1, 1, 1, 1] [2018-10-04 09:52:50,554 INFO L423 AbstractCegarLoop]: === Iteration 88 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:50,554 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:50,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1311563944, now seen corresponding path program 86 times [2018-10-04 09:52:50,554 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:50,554 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:50,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:50,555 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:52:50,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:50,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:50,732 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:52:50,900 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:52:51,166 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:52:51,601 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:52:52,144 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:52:52,288 INFO L134 CoverageAnalysis]: Checked inductivity of 14706 backedges. 0 proven. 14706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:52,289 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:52,289 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 [2018-10-04 09:52:52,295 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:52:52,359 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:52:52,359 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:52:52,363 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:52,928 INFO L134 CoverageAnalysis]: Checked inductivity of 14706 backedges. 0 proven. 14706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:52,947 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:52,947 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 88 [2018-10-04 09:52:52,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-10-04 09:52:52,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-10-04 09:52:52,948 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:52,949 INFO L87 Difference]: Start difference. First operand 351 states and 351 transitions. Second operand 89 states. [2018-10-04 09:52:53,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:53,356 INFO L93 Difference]: Finished difference Result 357 states and 357 transitions. [2018-10-04 09:52:53,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-04 09:52:53,356 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 350 [2018-10-04 09:52:53,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:53,357 INFO L225 Difference]: With dead ends: 357 [2018-10-04 09:52:53,357 INFO L226 Difference]: Without dead ends: 355 [2018-10-04 09:52:53,357 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.2s impTime 10 [2018-10-04 09:52:53,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2018-10-04 09:52:53,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 355. [2018-10-04 09:52:53,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2018-10-04 09:52:53,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 355 transitions. [2018-10-04 09:52:53,360 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 355 transitions. Word has length 350 [2018-10-04 09:52:53,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:53,360 INFO L480 AbstractCegarLoop]: Abstraction has 355 states and 355 transitions. [2018-10-04 09:52:53,360 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-10-04 09:52:53,360 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 355 transitions. [2018-10-04 09:52:53,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-10-04 09:52:53,362 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:53,362 INFO L375 BasicCegarLoop]: trace histogram [87, 87, 87, 87, 1, 1, 1, 1, 1, 1] [2018-10-04 09:52:53,362 INFO L423 AbstractCegarLoop]: === Iteration 89 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:53,362 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:53,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1739744686, now seen corresponding path program 87 times [2018-10-04 09:52:53,362 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:53,362 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:53,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:53,363 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:52:53,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:53,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:53,712 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:52:53,888 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:52:54,025 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:52:54,316 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:52:54,722 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:52:54,880 INFO L134 CoverageAnalysis]: Checked inductivity of 15051 backedges. 0 proven. 15051 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:54,881 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:54,881 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 [2018-10-04 09:52:54,888 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:52:55,026 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 88 check-sat command(s) [2018-10-04 09:52:55,026 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:52:55,031 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:55,603 INFO L134 CoverageAnalysis]: Checked inductivity of 15051 backedges. 0 proven. 15051 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:55,623 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:55,623 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2018-10-04 09:52:55,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-10-04 09:52:55,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-10-04 09:52:55,624 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:55,624 INFO L87 Difference]: Start difference. First operand 355 states and 355 transitions. Second operand 90 states. [2018-10-04 09:52:55,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:55,947 INFO L93 Difference]: Finished difference Result 361 states and 361 transitions. [2018-10-04 09:52:55,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-10-04 09:52:55,948 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 354 [2018-10-04 09:52:55,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:55,950 INFO L225 Difference]: With dead ends: 361 [2018-10-04 09:52:55,950 INFO L226 Difference]: Without dead ends: 359 [2018-10-04 09:52:55,950 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.0s impTime 11 [2018-10-04 09:52:55,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2018-10-04 09:52:55,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2018-10-04 09:52:55,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2018-10-04 09:52:55,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 359 transitions. [2018-10-04 09:52:55,954 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 359 transitions. Word has length 354 [2018-10-04 09:52:55,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:55,954 INFO L480 AbstractCegarLoop]: Abstraction has 359 states and 359 transitions. [2018-10-04 09:52:55,954 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-10-04 09:52:55,954 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 359 transitions. [2018-10-04 09:52:55,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-10-04 09:52:55,955 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:55,956 INFO L375 BasicCegarLoop]: trace histogram [88, 88, 88, 88, 1, 1, 1, 1, 1, 1] [2018-10-04 09:52:55,956 INFO L423 AbstractCegarLoop]: === Iteration 90 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:55,956 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:55,956 INFO L82 PathProgramCache]: Analyzing trace with hash 180711164, now seen corresponding path program 88 times [2018-10-04 09:52:55,956 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:55,956 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:55,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:55,957 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:52:55,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:55,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:56,140 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:52:56,262 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:52:56,435 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:52:56,767 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:52:57,225 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:52:57,435 INFO L134 CoverageAnalysis]: Checked inductivity of 15400 backedges. 0 proven. 15400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:57,436 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:57,436 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 [2018-10-04 09:52:57,443 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:52:57,523 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:52:57,523 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:52:57,529 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:58,196 INFO L134 CoverageAnalysis]: Checked inductivity of 15400 backedges. 0 proven. 15400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:58,216 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:58,216 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 90 [2018-10-04 09:52:58,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-10-04 09:52:58,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-10-04 09:52:58,217 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:58,217 INFO L87 Difference]: Start difference. First operand 359 states and 359 transitions. Second operand 91 states. [2018-10-04 09:52:58,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:58,581 INFO L93 Difference]: Finished difference Result 365 states and 365 transitions. [2018-10-04 09:52:58,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-10-04 09:52:58,581 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 358 [2018-10-04 09:52:58,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:58,583 INFO L225 Difference]: With dead ends: 365 [2018-10-04 09:52:58,583 INFO L226 Difference]: Without dead ends: 363 [2018-10-04 09:52:58,583 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.0s impTime 12 [2018-10-04 09:52:58,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2018-10-04 09:52:58,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2018-10-04 09:52:58,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2018-10-04 09:52:58,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 363 transitions. [2018-10-04 09:52:58,586 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 363 transitions. Word has length 358 [2018-10-04 09:52:58,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:58,586 INFO L480 AbstractCegarLoop]: Abstraction has 363 states and 363 transitions. [2018-10-04 09:52:58,586 INFO L481 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-10-04 09:52:58,586 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 363 transitions. [2018-10-04 09:52:58,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-10-04 09:52:58,588 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:58,588 INFO L375 BasicCegarLoop]: trace histogram [89, 89, 89, 89, 1, 1, 1, 1, 1, 1] [2018-10-04 09:52:58,588 INFO L423 AbstractCegarLoop]: === Iteration 91 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:58,588 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:58,588 INFO L82 PathProgramCache]: Analyzing trace with hash 512679590, now seen corresponding path program 89 times [2018-10-04 09:52:58,588 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:58,588 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:58,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:58,589 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:52:58,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:58,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:58,872 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:52:59,099 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:52:59,416 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:52:59,928 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:53:00,551 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:53:00,833 INFO L134 CoverageAnalysis]: Checked inductivity of 15753 backedges. 0 proven. 15753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:00,833 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:53:00,833 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 [2018-10-04 09:53:00,840 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:53:00,992 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 90 check-sat command(s) [2018-10-04 09:53:00,992 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:53:00,996 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:53:01,572 INFO L134 CoverageAnalysis]: Checked inductivity of 15753 backedges. 0 proven. 15753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:01,592 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:53:01,593 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2018-10-04 09:53:01,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-10-04 09:53:01,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-10-04 09:53:01,594 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:53:01,594 INFO L87 Difference]: Start difference. First operand 363 states and 363 transitions. Second operand 92 states. [2018-10-04 09:53:02,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:53:02,066 INFO L93 Difference]: Finished difference Result 369 states and 369 transitions. [2018-10-04 09:53:02,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-10-04 09:53:02,066 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 362 [2018-10-04 09:53:02,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:53:02,067 INFO L225 Difference]: With dead ends: 369 [2018-10-04 09:53:02,067 INFO L226 Difference]: Without dead ends: 367 [2018-10-04 09:53:02,068 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.7s impTime 13 [2018-10-04 09:53:02,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2018-10-04 09:53:02,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 367. [2018-10-04 09:53:02,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2018-10-04 09:53:02,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 367 transitions. [2018-10-04 09:53:02,071 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 367 transitions. Word has length 362 [2018-10-04 09:53:02,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:53:02,071 INFO L480 AbstractCegarLoop]: Abstraction has 367 states and 367 transitions. [2018-10-04 09:53:02,071 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-10-04 09:53:02,071 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 367 transitions. [2018-10-04 09:53:02,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-10-04 09:53:02,073 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:53:02,073 INFO L375 BasicCegarLoop]: trace histogram [90, 90, 90, 90, 1, 1, 1, 1, 1, 1] [2018-10-04 09:53:02,073 INFO L423 AbstractCegarLoop]: === Iteration 92 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:53:02,073 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:53:02,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1264871760, now seen corresponding path program 90 times [2018-10-04 09:53:02,073 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:53:02,073 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:53:02,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:02,074 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:53:02,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:02,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:02,281 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:53:02,507 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:02,824 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:03,183 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:53:03,371 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:53:03,552 INFO L134 CoverageAnalysis]: Checked inductivity of 16110 backedges. 0 proven. 16110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:03,552 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:53:03,552 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 [2018-10-04 09:53:03,560 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:53:03,749 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 91 check-sat command(s) [2018-10-04 09:53:03,749 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:53:03,753 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:53:04,452 INFO L134 CoverageAnalysis]: Checked inductivity of 16110 backedges. 0 proven. 16110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:04,473 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:53:04,474 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 92 [2018-10-04 09:53:04,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-10-04 09:53:04,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-10-04 09:53:04,475 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:53:04,475 INFO L87 Difference]: Start difference. First operand 367 states and 367 transitions. Second operand 93 states. [2018-10-04 09:53:04,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:53:04,947 INFO L93 Difference]: Finished difference Result 373 states and 373 transitions. [2018-10-04 09:53:04,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-10-04 09:53:04,947 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 366 [2018-10-04 09:53:04,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:53:04,949 INFO L225 Difference]: With dead ends: 373 [2018-10-04 09:53:04,949 INFO L226 Difference]: Without dead ends: 371 [2018-10-04 09:53:04,949 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.0s impTime 14 [2018-10-04 09:53:04,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2018-10-04 09:53:04,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2018-10-04 09:53:04,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2018-10-04 09:53:04,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 371 transitions. [2018-10-04 09:53:04,952 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 371 transitions. Word has length 366 [2018-10-04 09:53:04,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:53:04,953 INFO L480 AbstractCegarLoop]: Abstraction has 371 states and 371 transitions. [2018-10-04 09:53:04,953 INFO L481 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-10-04 09:53:04,953 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 371 transitions. [2018-10-04 09:53:04,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-10-04 09:53:04,954 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:53:04,954 INFO L375 BasicCegarLoop]: trace histogram [91, 91, 91, 91, 1, 1, 1, 1, 1, 1] [2018-10-04 09:53:04,955 INFO L423 AbstractCegarLoop]: === Iteration 93 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:53:04,955 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:53:04,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1480552710, now seen corresponding path program 91 times [2018-10-04 09:53:04,955 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:53:04,955 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:53:04,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:04,956 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:53:04,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:04,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:05,120 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:53:05,341 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:05,581 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:06,084 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:53:06,702 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:53:07,068 INFO L134 CoverageAnalysis]: Checked inductivity of 16471 backedges. 0 proven. 16471 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:07,068 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:53:07,068 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:53:07,076 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:53:07,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:07,147 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:53:07,733 INFO L134 CoverageAnalysis]: Checked inductivity of 16471 backedges. 0 proven. 16471 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:07,753 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:53:07,754 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2018-10-04 09:53:07,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-10-04 09:53:07,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-10-04 09:53:07,755 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:53:07,755 INFO L87 Difference]: Start difference. First operand 371 states and 371 transitions. Second operand 94 states. [2018-10-04 09:53:08,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:53:08,228 INFO L93 Difference]: Finished difference Result 377 states and 377 transitions. [2018-10-04 09:53:08,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-04 09:53:08,229 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 370 [2018-10-04 09:53:08,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:53:08,231 INFO L225 Difference]: With dead ends: 377 [2018-10-04 09:53:08,231 INFO L226 Difference]: Without dead ends: 375 [2018-10-04 09:53:08,231 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.6s impTime 15 [2018-10-04 09:53:08,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2018-10-04 09:53:08,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2018-10-04 09:53:08,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2018-10-04 09:53:08,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 375 transitions. [2018-10-04 09:53:08,234 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 375 transitions. Word has length 370 [2018-10-04 09:53:08,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:53:08,234 INFO L480 AbstractCegarLoop]: Abstraction has 375 states and 375 transitions. [2018-10-04 09:53:08,235 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-10-04 09:53:08,235 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 375 transitions. [2018-10-04 09:53:08,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2018-10-04 09:53:08,236 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:53:08,236 INFO L375 BasicCegarLoop]: trace histogram [92, 92, 92, 92, 1, 1, 1, 1, 1, 1] [2018-10-04 09:53:08,236 INFO L423 AbstractCegarLoop]: === Iteration 94 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:53:08,236 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:53:08,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1998729308, now seen corresponding path program 92 times [2018-10-04 09:53:08,237 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:53:08,237 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:53:08,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:08,237 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:53:08,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:08,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:08,526 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:53:08,939 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:09,352 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:09,859 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:53:10,537 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:53:10,923 INFO L134 CoverageAnalysis]: Checked inductivity of 16836 backedges. 0 proven. 16836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:10,924 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:53:10,924 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:53:10,930 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:53:11,000 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:53:11,000 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:53:11,005 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:53:11,596 INFO L134 CoverageAnalysis]: Checked inductivity of 16836 backedges. 0 proven. 16836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:11,616 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:53:11,617 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 94 [2018-10-04 09:53:11,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-10-04 09:53:11,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-10-04 09:53:11,618 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:53:11,618 INFO L87 Difference]: Start difference. First operand 375 states and 375 transitions. Second operand 95 states. [2018-10-04 09:53:12,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:53:12,121 INFO L93 Difference]: Finished difference Result 381 states and 381 transitions. [2018-10-04 09:53:12,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-10-04 09:53:12,121 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 374 [2018-10-04 09:53:12,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:53:12,123 INFO L225 Difference]: With dead ends: 381 [2018-10-04 09:53:12,123 INFO L226 Difference]: Without dead ends: 379 [2018-10-04 09:53:12,123 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 374 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.0s impTime 15 [2018-10-04 09:53:12,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2018-10-04 09:53:12,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2018-10-04 09:53:12,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-10-04 09:53:12,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 379 transitions. [2018-10-04 09:53:12,126 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 379 transitions. Word has length 374 [2018-10-04 09:53:12,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:53:12,126 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 379 transitions. [2018-10-04 09:53:12,126 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-10-04 09:53:12,126 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 379 transitions. [2018-10-04 09:53:12,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-10-04 09:53:12,127 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:53:12,128 INFO L375 BasicCegarLoop]: trace histogram [93, 93, 93, 93, 1, 1, 1, 1, 1, 1] [2018-10-04 09:53:12,128 INFO L423 AbstractCegarLoop]: === Iteration 95 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:53:12,128 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:53:12,128 INFO L82 PathProgramCache]: Analyzing trace with hash 582396750, now seen corresponding path program 93 times [2018-10-04 09:53:12,128 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:53:12,128 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:53:12,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:12,129 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:53:12,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:12,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:12,324 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:53:12,529 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:12,846 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:13,378 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:53:14,275 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:53:14,697 INFO L134 CoverageAnalysis]: Checked inductivity of 17205 backedges. 0 proven. 17205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:14,698 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:53:14,698 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 [2018-10-04 09:53:14,704 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:53:14,872 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 94 check-sat command(s) [2018-10-04 09:53:14,872 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:53:14,876 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:53:15,472 INFO L134 CoverageAnalysis]: Checked inductivity of 17205 backedges. 0 proven. 17205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:15,493 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:53:15,494 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2018-10-04 09:53:15,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-10-04 09:53:15,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-10-04 09:53:15,495 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:53:15,495 INFO L87 Difference]: Start difference. First operand 379 states and 379 transitions. Second operand 96 states. [2018-10-04 09:53:15,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:53:15,985 INFO L93 Difference]: Finished difference Result 385 states and 385 transitions. [2018-10-04 09:53:15,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-10-04 09:53:15,985 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 378 [2018-10-04 09:53:15,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:53:15,987 INFO L225 Difference]: With dead ends: 385 [2018-10-04 09:53:15,987 INFO L226 Difference]: Without dead ends: 383 [2018-10-04 09:53:15,988 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.0s impTime 16 [2018-10-04 09:53:15,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2018-10-04 09:53:15,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2018-10-04 09:53:15,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2018-10-04 09:53:15,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 383 transitions. [2018-10-04 09:53:15,991 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 383 transitions. Word has length 378 [2018-10-04 09:53:15,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:53:15,991 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 383 transitions. [2018-10-04 09:53:15,991 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-10-04 09:53:15,991 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 383 transitions. [2018-10-04 09:53:15,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2018-10-04 09:53:15,993 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:53:15,993 INFO L375 BasicCegarLoop]: trace histogram [94, 94, 94, 94, 1, 1, 1, 1, 1, 1] [2018-10-04 09:53:15,993 INFO L423 AbstractCegarLoop]: === Iteration 96 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:53:15,993 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:53:15,993 INFO L82 PathProgramCache]: Analyzing trace with hash 671457784, now seen corresponding path program 94 times [2018-10-04 09:53:15,993 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:53:15,993 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:53:15,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:15,994 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:53:15,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:16,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:16,174 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:53:16,297 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:16,566 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:17,102 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:53:17,583 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:53:17,732 INFO L134 CoverageAnalysis]: Checked inductivity of 17578 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:17,732 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:53:17,732 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:53:17,739 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:53:17,813 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:53:17,813 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:53:17,817 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:53:18,487 INFO L134 CoverageAnalysis]: Checked inductivity of 17578 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:18,507 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:53:18,507 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 96 [2018-10-04 09:53:18,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-10-04 09:53:18,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-10-04 09:53:18,509 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:53:18,509 INFO L87 Difference]: Start difference. First operand 383 states and 383 transitions. Second operand 97 states. [2018-10-04 09:53:18,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:53:18,891 INFO L93 Difference]: Finished difference Result 389 states and 389 transitions. [2018-10-04 09:53:18,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-10-04 09:53:18,891 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 382 [2018-10-04 09:53:18,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:53:18,893 INFO L225 Difference]: With dead ends: 389 [2018-10-04 09:53:18,893 INFO L226 Difference]: Without dead ends: 387 [2018-10-04 09:53:18,893 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.2s impTime 15 [2018-10-04 09:53:18,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2018-10-04 09:53:18,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2018-10-04 09:53:18,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2018-10-04 09:53:18,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 387 transitions. [2018-10-04 09:53:18,897 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 387 transitions. Word has length 382 [2018-10-04 09:53:18,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:53:18,897 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 387 transitions. [2018-10-04 09:53:18,897 INFO L481 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-10-04 09:53:18,898 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 387 transitions. [2018-10-04 09:53:18,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2018-10-04 09:53:18,899 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:53:18,899 INFO L375 BasicCegarLoop]: trace histogram [95, 95, 95, 95, 1, 1, 1, 1, 1, 1] [2018-10-04 09:53:18,899 INFO L423 AbstractCegarLoop]: === Iteration 97 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:53:18,899 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:53:18,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1782920098, now seen corresponding path program 95 times [2018-10-04 09:53:18,899 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:53:18,900 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:53:18,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:18,900 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:53:18,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:18,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:19,238 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:53:19,376 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:19,581 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:19,944 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:53:20,406 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:53:20,869 INFO L134 CoverageAnalysis]: Checked inductivity of 17955 backedges. 0 proven. 17955 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:20,870 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:53:20,870 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 [2018-10-04 09:53:20,881 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:53:21,043 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 96 check-sat command(s) [2018-10-04 09:53:21,043 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:53:21,048 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:53:21,675 INFO L134 CoverageAnalysis]: Checked inductivity of 17955 backedges. 0 proven. 17955 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:21,695 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:53:21,695 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2018-10-04 09:53:21,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-10-04 09:53:21,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-10-04 09:53:21,696 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:53:21,697 INFO L87 Difference]: Start difference. First operand 387 states and 387 transitions. Second operand 98 states. [2018-10-04 09:53:22,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:53:22,142 INFO L93 Difference]: Finished difference Result 393 states and 393 transitions. [2018-10-04 09:53:22,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-10-04 09:53:22,143 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 386 [2018-10-04 09:53:22,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:53:22,144 INFO L225 Difference]: With dead ends: 393 [2018-10-04 09:53:22,144 INFO L226 Difference]: Without dead ends: 391 [2018-10-04 09:53:22,144 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.4s impTime 19 [2018-10-04 09:53:22,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2018-10-04 09:53:22,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2018-10-04 09:53:22,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2018-10-04 09:53:22,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 391 transitions. [2018-10-04 09:53:22,147 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 391 transitions. Word has length 386 [2018-10-04 09:53:22,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:53:22,147 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 391 transitions. [2018-10-04 09:53:22,148 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-10-04 09:53:22,148 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 391 transitions. [2018-10-04 09:53:22,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2018-10-04 09:53:22,149 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:53:22,149 INFO L375 BasicCegarLoop]: trace histogram [96, 96, 96, 96, 1, 1, 1, 1, 1, 1] [2018-10-04 09:53:22,149 INFO L423 AbstractCegarLoop]: === Iteration 98 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:53:22,149 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:53:22,150 INFO L82 PathProgramCache]: Analyzing trace with hash 2041569356, now seen corresponding path program 96 times [2018-10-04 09:53:22,150 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:53:22,150 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:53:22,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:22,150 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:53:22,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:22,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:22,346 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:53:22,583 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:22,945 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:23,330 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:53:23,512 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:53:23,838 INFO L134 CoverageAnalysis]: Checked inductivity of 18336 backedges. 0 proven. 18336 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:23,838 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:53:23,838 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 [2018-10-04 09:53:23,846 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:53:24,007 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 97 check-sat command(s) [2018-10-04 09:53:24,007 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:53:24,012 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:53:24,832 INFO L134 CoverageAnalysis]: Checked inductivity of 18336 backedges. 0 proven. 18336 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:24,853 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:53:24,854 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 98 [2018-10-04 09:53:24,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-10-04 09:53:24,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-10-04 09:53:24,855 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:53:24,855 INFO L87 Difference]: Start difference. First operand 391 states and 391 transitions. Second operand 99 states. [2018-10-04 09:53:25,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:53:25,241 INFO L93 Difference]: Finished difference Result 397 states and 397 transitions. [2018-10-04 09:53:25,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-10-04 09:53:25,242 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 390 [2018-10-04 09:53:25,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:53:25,244 INFO L225 Difference]: With dead ends: 397 [2018-10-04 09:53:25,244 INFO L226 Difference]: Without dead ends: 395 [2018-10-04 09:53:25,244 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.1s impTime 19 [2018-10-04 09:53:25,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2018-10-04 09:53:25,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2018-10-04 09:53:25,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2018-10-04 09:53:25,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 395 transitions. [2018-10-04 09:53:25,247 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 395 transitions. Word has length 390 [2018-10-04 09:53:25,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:53:25,248 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 395 transitions. [2018-10-04 09:53:25,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-10-04 09:53:25,248 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 395 transitions. [2018-10-04 09:53:25,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2018-10-04 09:53:25,249 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:53:25,249 INFO L375 BasicCegarLoop]: trace histogram [97, 97, 97, 97, 1, 1, 1, 1, 1, 1] [2018-10-04 09:53:25,250 INFO L423 AbstractCegarLoop]: === Iteration 99 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:53:25,250 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:53:25,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1161832438, now seen corresponding path program 97 times [2018-10-04 09:53:25,250 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:53:25,250 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:53:25,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:25,250 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:53:25,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:25,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:25,435 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:53:25,563 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:25,840 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:26,356 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:53:26,785 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:53:27,096 INFO L134 CoverageAnalysis]: Checked inductivity of 18721 backedges. 0 proven. 18721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:27,096 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:53:27,096 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 [2018-10-04 09:53:27,102 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:53:27,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:27,179 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:53:27,804 INFO L134 CoverageAnalysis]: Checked inductivity of 18721 backedges. 0 proven. 18721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:27,824 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:53:27,824 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2018-10-04 09:53:27,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-10-04 09:53:27,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-10-04 09:53:27,825 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:53:27,825 INFO L87 Difference]: Start difference. First operand 395 states and 395 transitions. Second operand 100 states. [2018-10-04 09:53:28,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:53:28,277 INFO L93 Difference]: Finished difference Result 401 states and 401 transitions. [2018-10-04 09:53:28,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-10-04 09:53:28,277 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 394 [2018-10-04 09:53:28,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:53:28,278 INFO L225 Difference]: With dead ends: 401 [2018-10-04 09:53:28,279 INFO L226 Difference]: Without dead ends: 399 [2018-10-04 09:53:28,279 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.3s impTime 20 [2018-10-04 09:53:28,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2018-10-04 09:53:28,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 399. [2018-10-04 09:53:28,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2018-10-04 09:53:28,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 399 transitions. [2018-10-04 09:53:28,282 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 399 transitions. Word has length 394 [2018-10-04 09:53:28,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:53:28,283 INFO L480 AbstractCegarLoop]: Abstraction has 399 states and 399 transitions. [2018-10-04 09:53:28,283 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-10-04 09:53:28,283 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 399 transitions. [2018-10-04 09:53:28,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2018-10-04 09:53:28,284 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:53:28,284 INFO L375 BasicCegarLoop]: trace histogram [98, 98, 98, 98, 1, 1, 1, 1, 1, 1] [2018-10-04 09:53:28,285 INFO L423 AbstractCegarLoop]: === Iteration 100 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:53:28,285 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:53:28,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1162835296, now seen corresponding path program 98 times [2018-10-04 09:53:28,285 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:53:28,285 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:53:28,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:28,285 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:53:28,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:28,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:28,466 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:53:28,661 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:28,969 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:29,704 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:53:29,894 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:53:30,283 INFO L134 CoverageAnalysis]: Checked inductivity of 19110 backedges. 0 proven. 19110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:30,283 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:53:30,283 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:53:30,290 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:53:30,363 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:53:30,363 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:53:30,367 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:53:31,018 INFO L134 CoverageAnalysis]: Checked inductivity of 19110 backedges. 0 proven. 19110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:31,038 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:53:31,038 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 100 [2018-10-04 09:53:31,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-10-04 09:53:31,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-10-04 09:53:31,039 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:53:31,039 INFO L87 Difference]: Start difference. First operand 399 states and 399 transitions. Second operand 101 states. [2018-10-04 09:53:31,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:53:31,468 INFO L93 Difference]: Finished difference Result 405 states and 405 transitions. [2018-10-04 09:53:31,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-10-04 09:53:31,468 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 398 [2018-10-04 09:53:31,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:53:31,470 INFO L225 Difference]: With dead ends: 405 [2018-10-04 09:53:31,471 INFO L226 Difference]: Without dead ends: 403 [2018-10-04 09:53:31,471 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.4s impTime 22 [2018-10-04 09:53:31,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2018-10-04 09:53:31,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2018-10-04 09:53:31,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2018-10-04 09:53:31,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 403 transitions. [2018-10-04 09:53:31,475 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 403 transitions. Word has length 398 [2018-10-04 09:53:31,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:53:31,475 INFO L480 AbstractCegarLoop]: Abstraction has 403 states and 403 transitions. [2018-10-04 09:53:31,475 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-10-04 09:53:31,475 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 403 transitions. [2018-10-04 09:53:31,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2018-10-04 09:53:31,477 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:53:31,477 INFO L375 BasicCegarLoop]: trace histogram [99, 99, 99, 99, 1, 1, 1, 1, 1, 1] [2018-10-04 09:53:31,477 INFO L423 AbstractCegarLoop]: === Iteration 101 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:53:31,477 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:53:31,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1719371850, now seen corresponding path program 99 times [2018-10-04 09:53:31,478 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:53:31,478 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:53:31,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:31,478 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:53:31,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:31,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:31,676 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:53:31,896 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:32,031 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:32,327 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:53:32,745 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:53:33,248 INFO L134 CoverageAnalysis]: Checked inductivity of 19503 backedges. 0 proven. 19503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:33,248 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:53:33,248 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 [2018-10-04 09:53:33,257 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:53:33,439 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 100 check-sat command(s) [2018-10-04 09:53:33,439 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:53:33,444 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:53:34,100 INFO L134 CoverageAnalysis]: Checked inductivity of 19503 backedges. 0 proven. 19503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:34,121 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:53:34,121 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2018-10-04 09:53:34,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-10-04 09:53:34,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-10-04 09:53:34,122 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:53:34,123 INFO L87 Difference]: Start difference. First operand 403 states and 403 transitions. Second operand 102 states. [2018-10-04 09:53:34,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:53:34,549 INFO L93 Difference]: Finished difference Result 409 states and 409 transitions. [2018-10-04 09:53:34,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-10-04 09:53:34,549 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 402 [2018-10-04 09:53:34,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:53:34,551 INFO L225 Difference]: With dead ends: 409 [2018-10-04 09:53:34,551 INFO L226 Difference]: Without dead ends: 407 [2018-10-04 09:53:34,551 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.2s impTime 20 [2018-10-04 09:53:34,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2018-10-04 09:53:34,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 407. [2018-10-04 09:53:34,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2018-10-04 09:53:34,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 407 transitions. [2018-10-04 09:53:34,555 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 407 transitions. Word has length 402 [2018-10-04 09:53:34,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:53:34,555 INFO L480 AbstractCegarLoop]: Abstraction has 407 states and 407 transitions. [2018-10-04 09:53:34,556 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-10-04 09:53:34,556 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 407 transitions. [2018-10-04 09:53:34,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2018-10-04 09:53:34,557 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:53:34,558 INFO L375 BasicCegarLoop]: trace histogram [100, 100, 100, 100, 1, 1, 1, 1, 1, 1] [2018-10-04 09:53:34,558 INFO L423 AbstractCegarLoop]: === Iteration 102 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:53:34,558 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:53:34,558 INFO L82 PathProgramCache]: Analyzing trace with hash 333160692, now seen corresponding path program 100 times [2018-10-04 09:53:34,559 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:53:34,559 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:53:34,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:34,559 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:53:34,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:34,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:34,966 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:53:35,197 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:35,368 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:35,907 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:53:36,533 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:53:37,258 INFO L134 CoverageAnalysis]: Checked inductivity of 19900 backedges. 0 proven. 19900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:37,258 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:53:37,258 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 [2018-10-04 09:53:37,265 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:53:37,344 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:53:37,344 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:53:37,349 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:53:38,005 INFO L134 CoverageAnalysis]: Checked inductivity of 19900 backedges. 0 proven. 19900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:38,025 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:53:38,026 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 102 [2018-10-04 09:53:38,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-10-04 09:53:38,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-10-04 09:53:38,027 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:53:38,027 INFO L87 Difference]: Start difference. First operand 407 states and 407 transitions. Second operand 103 states. [2018-10-04 09:53:38,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:53:38,508 INFO L93 Difference]: Finished difference Result 413 states and 413 transitions. [2018-10-04 09:53:38,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-10-04 09:53:38,509 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 406 [2018-10-04 09:53:38,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:53:38,512 INFO L225 Difference]: With dead ends: 413 [2018-10-04 09:53:38,512 INFO L226 Difference]: Without dead ends: 411 [2018-10-04 09:53:38,512 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 406 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 2.0s impTime 24 [2018-10-04 09:53:38,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2018-10-04 09:53:38,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 411. [2018-10-04 09:53:38,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2018-10-04 09:53:38,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 411 transitions. [2018-10-04 09:53:38,517 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 411 transitions. Word has length 406 [2018-10-04 09:53:38,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:53:38,517 INFO L480 AbstractCegarLoop]: Abstraction has 411 states and 411 transitions. [2018-10-04 09:53:38,517 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-10-04 09:53:38,517 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 411 transitions. [2018-10-04 09:53:38,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2018-10-04 09:53:38,519 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:53:38,519 INFO L375 BasicCegarLoop]: trace histogram [101, 101, 101, 101, 1, 1, 1, 1, 1, 1] [2018-10-04 09:53:38,519 INFO L423 AbstractCegarLoop]: === Iteration 103 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:53:38,519 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:53:38,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1825264798, now seen corresponding path program 101 times [2018-10-04 09:53:38,519 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:53:38,519 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:53:38,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:38,520 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:53:38,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:38,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:38,731 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:53:38,887 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:39,149 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:39,743 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:53:40,276 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:53:40,938 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:53:41,064 INFO L134 CoverageAnalysis]: Checked inductivity of 20301 backedges. 0 proven. 20301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:41,065 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:53:41,065 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 [2018-10-04 09:53:41,072 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:53:41,250 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 102 check-sat command(s) [2018-10-04 09:53:41,250 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:53:41,255 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:53:42,060 INFO L134 CoverageAnalysis]: Checked inductivity of 20301 backedges. 0 proven. 20301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:42,080 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:53:42,081 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 103 [2018-10-04 09:53:42,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-10-04 09:53:42,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-10-04 09:53:42,082 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:53:42,082 INFO L87 Difference]: Start difference. First operand 411 states and 411 transitions. Second operand 104 states. [2018-10-04 09:53:42,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:53:42,664 INFO L93 Difference]: Finished difference Result 417 states and 417 transitions. [2018-10-04 09:53:42,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-10-04 09:53:42,665 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 410 [2018-10-04 09:53:42,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:53:42,666 INFO L225 Difference]: With dead ends: 417 [2018-10-04 09:53:42,666 INFO L226 Difference]: Without dead ends: 415 [2018-10-04 09:53:42,667 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 410 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 1.9s impTime 8 [2018-10-04 09:53:42,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2018-10-04 09:53:42,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2018-10-04 09:53:42,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2018-10-04 09:53:42,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 415 transitions. [2018-10-04 09:53:42,672 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 415 transitions. Word has length 410 [2018-10-04 09:53:42,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:53:42,672 INFO L480 AbstractCegarLoop]: Abstraction has 415 states and 415 transitions. [2018-10-04 09:53:42,672 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-10-04 09:53:42,672 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 415 transitions. [2018-10-04 09:53:42,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2018-10-04 09:53:42,674 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:53:42,674 INFO L375 BasicCegarLoop]: trace histogram [102, 102, 102, 102, 1, 1, 1, 1, 1, 1] [2018-10-04 09:53:42,675 INFO L423 AbstractCegarLoop]: === Iteration 104 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:53:42,675 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:53:42,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1710939320, now seen corresponding path program 102 times [2018-10-04 09:53:42,675 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:53:42,675 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:53:42,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:42,676 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:53:42,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:42,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:42,940 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:53:43,079 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:43,240 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:43,563 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:53:43,997 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:53:44,885 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:53:45,061 INFO L134 CoverageAnalysis]: Checked inductivity of 20706 backedges. 0 proven. 20706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:45,061 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:53:45,061 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 [2018-10-04 09:53:45,068 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:53:45,238 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 103 check-sat command(s) [2018-10-04 09:53:45,238 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:53:45,244 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:53:45,932 INFO L134 CoverageAnalysis]: Checked inductivity of 20706 backedges. 0 proven. 20706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:45,952 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:53:45,953 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 104 [2018-10-04 09:53:45,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-10-04 09:53:45,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-10-04 09:53:45,954 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:53:45,954 INFO L87 Difference]: Start difference. First operand 415 states and 415 transitions. Second operand 105 states. [2018-10-04 09:53:46,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:53:46,501 INFO L93 Difference]: Finished difference Result 421 states and 421 transitions. [2018-10-04 09:53:46,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-10-04 09:53:46,502 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 414 [2018-10-04 09:53:46,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:53:46,503 INFO L225 Difference]: With dead ends: 421 [2018-10-04 09:53:46,503 INFO L226 Difference]: Without dead ends: 419 [2018-10-04 09:53:46,503 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 1.6s impTime 9 [2018-10-04 09:53:46,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2018-10-04 09:53:46,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 419. [2018-10-04 09:53:46,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2018-10-04 09:53:46,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 419 transitions. [2018-10-04 09:53:46,507 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 419 transitions. Word has length 414 [2018-10-04 09:53:46,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:53:46,508 INFO L480 AbstractCegarLoop]: Abstraction has 419 states and 419 transitions. [2018-10-04 09:53:46,508 INFO L481 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-10-04 09:53:46,508 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 419 transitions. [2018-10-04 09:53:46,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2018-10-04 09:53:46,509 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:53:46,510 INFO L375 BasicCegarLoop]: trace histogram [103, 103, 103, 103, 1, 1, 1, 1, 1, 1] [2018-10-04 09:53:46,510 INFO L423 AbstractCegarLoop]: === Iteration 105 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:53:46,510 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:53:46,510 INFO L82 PathProgramCache]: Analyzing trace with hash -486306574, now seen corresponding path program 103 times [2018-10-04 09:53:46,510 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:53:46,510 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:53:46,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:46,511 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:53:46,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:46,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:46,836 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:53:46,974 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:47,208 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:47,616 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:53:48,141 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:53:48,794 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:53:49,008 INFO L134 CoverageAnalysis]: Checked inductivity of 21115 backedges. 0 proven. 21115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:49,008 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:53:49,008 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 [2018-10-04 09:53:49,015 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:53:49,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:49,101 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:53:49,951 INFO L134 CoverageAnalysis]: Checked inductivity of 21115 backedges. 0 proven. 21115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:49,971 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:53:49,971 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 105 [2018-10-04 09:53:49,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-10-04 09:53:49,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-10-04 09:53:49,973 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:53:49,973 INFO L87 Difference]: Start difference. First operand 419 states and 419 transitions. Second operand 106 states. [2018-10-04 09:53:50,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:53:50,569 INFO L93 Difference]: Finished difference Result 425 states and 425 transitions. [2018-10-04 09:53:50,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-10-04 09:53:50,569 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 418 [2018-10-04 09:53:50,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:53:50,570 INFO L225 Difference]: With dead ends: 425 [2018-10-04 09:53:50,570 INFO L226 Difference]: Without dead ends: 423 [2018-10-04 09:53:50,571 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 1.8s impTime 10 [2018-10-04 09:53:50,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2018-10-04 09:53:50,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 423. [2018-10-04 09:53:50,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2018-10-04 09:53:50,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 423 transitions. [2018-10-04 09:53:50,575 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 423 transitions. Word has length 418 [2018-10-04 09:53:50,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:53:50,575 INFO L480 AbstractCegarLoop]: Abstraction has 423 states and 423 transitions. [2018-10-04 09:53:50,575 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-10-04 09:53:50,575 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 423 transitions. [2018-10-04 09:53:50,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2018-10-04 09:53:50,577 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:53:50,577 INFO L375 BasicCegarLoop]: trace histogram [104, 104, 104, 104, 1, 1, 1, 1, 1, 1] [2018-10-04 09:53:50,577 INFO L423 AbstractCegarLoop]: === Iteration 106 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:53:50,577 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:53:50,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1308692892, now seen corresponding path program 104 times [2018-10-04 09:53:50,578 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:53:50,578 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:53:50,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:50,578 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:53:50,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:50,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:50,778 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:53:50,994 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:51,202 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:51,709 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:53:52,343 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:53:53,079 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:53:53,300 INFO L134 CoverageAnalysis]: Checked inductivity of 21528 backedges. 0 proven. 21528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:53,300 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:53:53,300 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 [2018-10-04 09:53:53,307 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:53:53,386 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:53:53,386 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:53:53,391 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:53:54,119 INFO L134 CoverageAnalysis]: Checked inductivity of 21528 backedges. 0 proven. 21528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:54,139 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:53:54,139 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 106 [2018-10-04 09:53:54,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-10-04 09:53:54,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-10-04 09:53:54,140 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:53:54,141 INFO L87 Difference]: Start difference. First operand 423 states and 423 transitions. Second operand 107 states. [2018-10-04 09:53:54,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:53:54,733 INFO L93 Difference]: Finished difference Result 429 states and 429 transitions. [2018-10-04 09:53:54,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-10-04 09:53:54,733 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 422 [2018-10-04 09:53:54,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:53:54,734 INFO L225 Difference]: With dead ends: 429 [2018-10-04 09:53:54,734 INFO L226 Difference]: Without dead ends: 427 [2018-10-04 09:53:54,734 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 2.1s impTime 11 [2018-10-04 09:53:54,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2018-10-04 09:53:54,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2018-10-04 09:53:54,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2018-10-04 09:53:54,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 427 transitions. [2018-10-04 09:53:54,736 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 427 transitions. Word has length 422 [2018-10-04 09:53:54,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:53:54,737 INFO L480 AbstractCegarLoop]: Abstraction has 427 states and 427 transitions. [2018-10-04 09:53:54,737 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-10-04 09:53:54,737 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 427 transitions. [2018-10-04 09:53:54,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2018-10-04 09:53:54,738 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:53:54,738 INFO L375 BasicCegarLoop]: trace histogram [105, 105, 105, 105, 1, 1, 1, 1, 1, 1] [2018-10-04 09:53:54,739 INFO L423 AbstractCegarLoop]: === Iteration 107 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:53:54,739 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:53:54,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1073230150, now seen corresponding path program 105 times [2018-10-04 09:53:54,739 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:53:54,739 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:53:54,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:54,740 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:53:54,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:54,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:55,021 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:53:55,318 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:55,475 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:55,692 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:53:56,039 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:53:56,623 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:53:56,922 INFO L134 CoverageAnalysis]: Checked inductivity of 21945 backedges. 0 proven. 21945 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:56,922 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:53:56,922 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:53:56,933 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:53:57,122 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 106 check-sat command(s) [2018-10-04 09:53:57,123 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:53:57,127 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:53:57,830 INFO L134 CoverageAnalysis]: Checked inductivity of 21945 backedges. 0 proven. 21945 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:57,850 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:53:57,851 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 107 [2018-10-04 09:53:57,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-10-04 09:53:57,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-10-04 09:53:57,852 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:53:57,852 INFO L87 Difference]: Start difference. First operand 427 states and 427 transitions. Second operand 108 states. [2018-10-04 09:53:58,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:53:58,373 INFO L93 Difference]: Finished difference Result 433 states and 433 transitions. [2018-10-04 09:53:58,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-10-04 09:53:58,374 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 426 [2018-10-04 09:53:58,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:53:58,375 INFO L225 Difference]: With dead ends: 433 [2018-10-04 09:53:58,375 INFO L226 Difference]: Without dead ends: 431 [2018-10-04 09:53:58,375 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.5s impTime 12 [2018-10-04 09:53:58,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2018-10-04 09:53:58,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 431. [2018-10-04 09:53:58,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2018-10-04 09:53:58,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 431 transitions. [2018-10-04 09:53:58,377 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 431 transitions. Word has length 426 [2018-10-04 09:53:58,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:53:58,378 INFO L480 AbstractCegarLoop]: Abstraction has 431 states and 431 transitions. [2018-10-04 09:53:58,378 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-10-04 09:53:58,378 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 431 transitions. [2018-10-04 09:53:58,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2018-10-04 09:53:58,379 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:53:58,379 INFO L375 BasicCegarLoop]: trace histogram [106, 106, 106, 106, 1, 1, 1, 1, 1, 1] [2018-10-04 09:53:58,379 INFO L423 AbstractCegarLoop]: === Iteration 108 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:53:58,380 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:53:58,380 INFO L82 PathProgramCache]: Analyzing trace with hash 480472048, now seen corresponding path program 106 times [2018-10-04 09:53:58,380 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:53:58,380 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:53:58,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:58,380 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:53:58,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:58,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:58,568 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:53:58,706 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:58,969 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:59,485 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:53:59,955 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:54:00,522 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:54:00,888 INFO L134 CoverageAnalysis]: Checked inductivity of 22366 backedges. 0 proven. 22366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:54:00,888 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:54:00,888 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:54:00,897 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:54:00,983 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:54:00,983 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:54:00,988 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:54:01,711 INFO L134 CoverageAnalysis]: Checked inductivity of 22366 backedges. 0 proven. 22366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:54:01,731 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:54:01,731 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 108 [2018-10-04 09:54:01,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-10-04 09:54:01,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-10-04 09:54:01,733 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:54:01,733 INFO L87 Difference]: Start difference. First operand 431 states and 431 transitions. Second operand 109 states. [2018-10-04 09:54:02,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:54:02,332 INFO L93 Difference]: Finished difference Result 437 states and 437 transitions. [2018-10-04 09:54:02,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-10-04 09:54:02,333 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 430 [2018-10-04 09:54:02,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:54:02,334 INFO L225 Difference]: With dead ends: 437 [2018-10-04 09:54:02,334 INFO L226 Difference]: Without dead ends: 435 [2018-10-04 09:54:02,334 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 537 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 1.8s impTime 13 [2018-10-04 09:54:02,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2018-10-04 09:54:02,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 435. [2018-10-04 09:54:02,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2018-10-04 09:54:02,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 435 transitions. [2018-10-04 09:54:02,337 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 435 transitions. Word has length 430 [2018-10-04 09:54:02,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:54:02,337 INFO L480 AbstractCegarLoop]: Abstraction has 435 states and 435 transitions. [2018-10-04 09:54:02,337 INFO L481 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-10-04 09:54:02,337 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 435 transitions. [2018-10-04 09:54:02,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2018-10-04 09:54:02,339 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:54:02,339 INFO L375 BasicCegarLoop]: trace histogram [107, 107, 107, 107, 1, 1, 1, 1, 1, 1] [2018-10-04 09:54:02,339 INFO L423 AbstractCegarLoop]: === Iteration 109 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:54:02,339 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:54:02,339 INFO L82 PathProgramCache]: Analyzing trace with hash -427998822, now seen corresponding path program 107 times [2018-10-04 09:54:02,339 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:54:02,339 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:54:02,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:54:02,340 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:54:02,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:54:02,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:54:02,561 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:54:02,699 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:54:02,895 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:54:03,414 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:54:04,048 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:54:04,631 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:54:05,061 INFO L134 CoverageAnalysis]: Checked inductivity of 22791 backedges. 0 proven. 22791 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:54:05,061 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:54:05,062 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 [2018-10-04 09:54:05,068 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:54:05,287 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 108 check-sat command(s) [2018-10-04 09:54:05,287 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:54:05,292 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:54:05,996 INFO L134 CoverageAnalysis]: Checked inductivity of 22791 backedges. 0 proven. 22791 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:54:06,017 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:54:06,017 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 109 [2018-10-04 09:54:06,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-10-04 09:54:06,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-10-04 09:54:06,018 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:54:06,018 INFO L87 Difference]: Start difference. First operand 435 states and 435 transitions. Second operand 110 states. [2018-10-04 09:54:06,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:54:06,655 INFO L93 Difference]: Finished difference Result 441 states and 441 transitions. [2018-10-04 09:54:06,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-10-04 09:54:06,656 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 434 [2018-10-04 09:54:06,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:54:06,657 INFO L225 Difference]: With dead ends: 441 [2018-10-04 09:54:06,657 INFO L226 Difference]: Without dead ends: 439 [2018-10-04 09:54:06,657 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 434 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.1s impTime 14 [2018-10-04 09:54:06,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2018-10-04 09:54:06,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2018-10-04 09:54:06,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2018-10-04 09:54:06,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 439 transitions. [2018-10-04 09:54:06,660 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 439 transitions. Word has length 434 [2018-10-04 09:54:06,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:54:06,660 INFO L480 AbstractCegarLoop]: Abstraction has 439 states and 439 transitions. [2018-10-04 09:54:06,660 INFO L481 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-10-04 09:54:06,660 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 439 transitions. [2018-10-04 09:54:06,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2018-10-04 09:54:06,662 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:54:06,662 INFO L375 BasicCegarLoop]: trace histogram [108, 108, 108, 108, 1, 1, 1, 1, 1, 1] [2018-10-04 09:54:06,662 INFO L423 AbstractCegarLoop]: === Iteration 110 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:54:06,663 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:54:06,663 INFO L82 PathProgramCache]: Analyzing trace with hash -557829564, now seen corresponding path program 108 times [2018-10-04 09:54:06,663 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:54:06,663 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:54:06,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:54:06,664 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:54:06,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:54:06,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:54:06,833 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:54:06,989 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:54:07,254 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:54:07,758 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:54:08,095 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:54:08,547 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:54:09,001 INFO L134 CoverageAnalysis]: Checked inductivity of 23220 backedges. 0 proven. 23220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:54:09,001 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:54:09,002 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 [2018-10-04 09:54:09,008 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:54:09,199 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 109 check-sat command(s) [2018-10-04 09:54:09,200 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:54:09,204 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:54:09,928 INFO L134 CoverageAnalysis]: Checked inductivity of 23220 backedges. 0 proven. 23220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:54:09,948 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:54:09,948 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 110 [2018-10-04 09:54:09,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-10-04 09:54:09,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-10-04 09:54:09,950 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:54:09,950 INFO L87 Difference]: Start difference. First operand 439 states and 439 transitions. Second operand 111 states. [2018-10-04 09:54:10,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:54:10,502 INFO L93 Difference]: Finished difference Result 445 states and 445 transitions. [2018-10-04 09:54:10,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-10-04 09:54:10,502 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 438 [2018-10-04 09:54:10,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:54:10,503 INFO L225 Difference]: With dead ends: 445 [2018-10-04 09:54:10,503 INFO L226 Difference]: Without dead ends: 443 [2018-10-04 09:54:10,504 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 1.7s impTime 15 [2018-10-04 09:54:10,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2018-10-04 09:54:10,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 443. [2018-10-04 09:54:10,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2018-10-04 09:54:10,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 443 transitions. [2018-10-04 09:54:10,506 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 443 transitions. Word has length 438 [2018-10-04 09:54:10,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:54:10,506 INFO L480 AbstractCegarLoop]: Abstraction has 443 states and 443 transitions. [2018-10-04 09:54:10,507 INFO L481 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-10-04 09:54:10,507 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 443 transitions. [2018-10-04 09:54:10,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2018-10-04 09:54:10,508 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:54:10,508 INFO L375 BasicCegarLoop]: trace histogram [109, 109, 109, 109, 1, 1, 1, 1, 1, 1] [2018-10-04 09:54:10,508 INFO L423 AbstractCegarLoop]: === Iteration 111 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:54:10,508 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:54:10,509 INFO L82 PathProgramCache]: Analyzing trace with hash 627490286, now seen corresponding path program 109 times [2018-10-04 09:54:10,509 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:54:10,509 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:54:10,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:54:10,509 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:54:10,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:54:10,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:54:10,715 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:54:10,935 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:54:11,051 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:54:11,297 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:54:11,662 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:54:12,259 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:54:12,775 INFO L134 CoverageAnalysis]: Checked inductivity of 23653 backedges. 0 proven. 23653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:54:12,775 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:54:12,775 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 [2018-10-04 09:54:12,782 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:54:12,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:54:12,868 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:54:13,580 INFO L134 CoverageAnalysis]: Checked inductivity of 23653 backedges. 0 proven. 23653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:54:13,600 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:54:13,601 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111] total 111 [2018-10-04 09:54:13,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-10-04 09:54:13,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-10-04 09:54:13,602 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:54:13,603 INFO L87 Difference]: Start difference. First operand 443 states and 443 transitions. Second operand 112 states. [2018-10-04 09:54:14,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:54:14,234 INFO L93 Difference]: Finished difference Result 449 states and 449 transitions. [2018-10-04 09:54:14,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-10-04 09:54:14,235 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 442 [2018-10-04 09:54:14,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:54:14,236 INFO L225 Difference]: With dead ends: 449 [2018-10-04 09:54:14,236 INFO L226 Difference]: Without dead ends: 447 [2018-10-04 09:54:14,236 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 442 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.6s impTime 16 [2018-10-04 09:54:14,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2018-10-04 09:54:14,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2018-10-04 09:54:14,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2018-10-04 09:54:14,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 447 transitions. [2018-10-04 09:54:14,238 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 447 transitions. Word has length 442 [2018-10-04 09:54:14,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:54:14,239 INFO L480 AbstractCegarLoop]: Abstraction has 447 states and 447 transitions. [2018-10-04 09:54:14,239 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-10-04 09:54:14,239 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 447 transitions. [2018-10-04 09:54:14,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2018-10-04 09:54:14,240 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:54:14,240 INFO L375 BasicCegarLoop]: trace histogram [110, 110, 110, 110, 1, 1, 1, 1, 1, 1] [2018-10-04 09:54:14,240 INFO L423 AbstractCegarLoop]: === Iteration 112 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:54:14,240 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:54:14,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1496016024, now seen corresponding path program 110 times [2018-10-04 09:54:14,241 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:54:14,241 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:54:14,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:54:14,241 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:54:14,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:54:14,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:54:14,456 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:54:14,676 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:54:14,834 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:54:15,538 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:54:16,161 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:54:16,751 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:54:16,965 INFO L134 CoverageAnalysis]: Checked inductivity of 24090 backedges. 0 proven. 24090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:54:16,965 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:54:16,965 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 [2018-10-04 09:54:16,973 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:54:17,054 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:54:17,054 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:54:17,059 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:54:17,794 INFO L134 CoverageAnalysis]: Checked inductivity of 24090 backedges. 0 proven. 24090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:54:17,814 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:54:17,815 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112] total 112 [2018-10-04 09:54:17,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-10-04 09:54:17,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-10-04 09:54:17,817 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:54:17,817 INFO L87 Difference]: Start difference. First operand 447 states and 447 transitions. Second operand 113 states. [2018-10-04 09:54:18,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:54:18,443 INFO L93 Difference]: Finished difference Result 453 states and 453 transitions. [2018-10-04 09:54:18,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-10-04 09:54:18,444 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 446 [2018-10-04 09:54:18,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:54:18,445 INFO L225 Difference]: With dead ends: 453 [2018-10-04 09:54:18,445 INFO L226 Difference]: Without dead ends: 451 [2018-10-04 09:54:18,445 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 557 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.0s impTime 17 [2018-10-04 09:54:18,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2018-10-04 09:54:18,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 451. [2018-10-04 09:54:18,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 451 states. [2018-10-04 09:54:18,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 451 transitions. [2018-10-04 09:54:18,449 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 451 transitions. Word has length 446 [2018-10-04 09:54:18,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:54:18,449 INFO L480 AbstractCegarLoop]: Abstraction has 451 states and 451 transitions. [2018-10-04 09:54:18,449 INFO L481 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-10-04 09:54:18,450 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 451 transitions. [2018-10-04 09:54:18,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2018-10-04 09:54:18,451 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:54:18,451 INFO L375 BasicCegarLoop]: trace histogram [111, 111, 111, 111, 1, 1, 1, 1, 1, 1] [2018-10-04 09:54:18,451 INFO L423 AbstractCegarLoop]: === Iteration 113 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:54:18,451 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:54:18,452 INFO L82 PathProgramCache]: Analyzing trace with hash 931702338, now seen corresponding path program 111 times [2018-10-04 09:54:18,452 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:54:18,452 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:54:18,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:54:18,452 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:54:18,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:54:18,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:54:18,662 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:54:18,851 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:54:19,132 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:54:19,595 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:54:20,178 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:54:21,119 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:54:21,712 INFO L134 CoverageAnalysis]: Checked inductivity of 24531 backedges. 0 proven. 24531 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:54:21,712 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:54:21,713 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 [2018-10-04 09:54:21,719 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:54:21,929 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 112 check-sat command(s) [2018-10-04 09:54:21,929 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:54:21,933 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:54:22,681 INFO L134 CoverageAnalysis]: Checked inductivity of 24531 backedges. 0 proven. 24531 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:54:22,702 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:54:22,702 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113] total 113 [2018-10-04 09:54:22,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-10-04 09:54:22,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-10-04 09:54:22,704 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:54:22,704 INFO L87 Difference]: Start difference. First operand 451 states and 451 transitions. Second operand 114 states. [2018-10-04 09:54:23,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:54:23,488 INFO L93 Difference]: Finished difference Result 457 states and 457 transitions. [2018-10-04 09:54:23,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-10-04 09:54:23,489 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 450 [2018-10-04 09:54:23,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:54:23,489 INFO L225 Difference]: With dead ends: 457 [2018-10-04 09:54:23,490 INFO L226 Difference]: Without dead ends: 455 [2018-10-04 09:54:23,490 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 562 GetRequests, 450 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s Time 2.6s impTime 18 [2018-10-04 09:54:23,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2018-10-04 09:54:23,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 455. [2018-10-04 09:54:23,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2018-10-04 09:54:23,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 455 transitions. [2018-10-04 09:54:23,492 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 455 transitions. Word has length 450 [2018-10-04 09:54:23,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:54:23,492 INFO L480 AbstractCegarLoop]: Abstraction has 455 states and 455 transitions. [2018-10-04 09:54:23,493 INFO L481 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-10-04 09:54:23,493 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 455 transitions. [2018-10-04 09:54:23,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2018-10-04 09:54:23,494 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:54:23,494 INFO L375 BasicCegarLoop]: trace histogram [112, 112, 112, 112, 1, 1, 1, 1, 1, 1] [2018-10-04 09:54:23,494 INFO L423 AbstractCegarLoop]: === Iteration 114 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:54:23,495 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:54:23,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1018757868, now seen corresponding path program 112 times [2018-10-04 09:54:23,495 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:54:23,495 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:54:23,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:54:23,496 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:54:23,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:54:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:54:23,707 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:54:23,839 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:54:24,065 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:54:24,461 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:54:24,963 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:54:25,797 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:54:26,462 INFO L134 CoverageAnalysis]: Checked inductivity of 24976 backedges. 0 proven. 24976 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:54:26,463 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:54:26,463 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 [2018-10-04 09:54:26,469 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:54:26,559 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:54:26,560 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:54:26,564 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:54:27,334 INFO L134 CoverageAnalysis]: Checked inductivity of 24976 backedges. 0 proven. 24976 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:54:27,354 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:54:27,354 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 114] total 114 [2018-10-04 09:54:27,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-10-04 09:54:27,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-10-04 09:54:27,355 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:54:27,356 INFO L87 Difference]: Start difference. First operand 455 states and 455 transitions. Second operand 115 states. [2018-10-04 09:54:28,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:54:28,124 INFO L93 Difference]: Finished difference Result 461 states and 461 transitions. [2018-10-04 09:54:28,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-10-04 09:54:28,125 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 454 [2018-10-04 09:54:28,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:54:28,126 INFO L225 Difference]: With dead ends: 461 [2018-10-04 09:54:28,126 INFO L226 Difference]: Without dead ends: 459 [2018-10-04 09:54:28,127 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 567 GetRequests, 454 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time 2.3s impTime 19 [2018-10-04 09:54:28,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2018-10-04 09:54:28,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 459. [2018-10-04 09:54:28,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2018-10-04 09:54:28,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 459 transitions. [2018-10-04 09:54:28,130 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 459 transitions. Word has length 454 [2018-10-04 09:54:28,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:54:28,130 INFO L480 AbstractCegarLoop]: Abstraction has 459 states and 459 transitions. [2018-10-04 09:54:28,130 INFO L481 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-10-04 09:54:28,130 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 459 transitions. [2018-10-04 09:54:28,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2018-10-04 09:54:28,132 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:54:28,132 INFO L375 BasicCegarLoop]: trace histogram [113, 113, 113, 113, 1, 1, 1, 1, 1, 1] [2018-10-04 09:54:28,132 INFO L423 AbstractCegarLoop]: === Iteration 115 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:54:28,132 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:54:28,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1136065174, now seen corresponding path program 113 times [2018-10-04 09:54:28,132 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:54:28,132 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:54:28,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:54:28,133 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:54:28,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:54:28,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:54:28,415 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 Received shutdown request... [2018-10-04 09:54:28,552 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-04 09:54:28,557 WARN L205 ceAbstractionStarter]: Timeout [2018-10-04 09:54:28,558 INFO L202 PluginConnector]: Adding new model Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.10 09:54:28 BoogieIcfgContainer [2018-10-04 09:54:28,558 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-04 09:54:28,559 INFO L168 Benchmark]: Toolchain (without parser) took 239571.89 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 76.5 MB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 317.6 MB). Peak memory consumption was 394.1 MB. Max. memory is 7.1 GB. [2018-10-04 09:54:28,561 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.51 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-04 09:54:28,561 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.53 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-04 09:54:28,561 INFO L168 Benchmark]: Boogie Preprocessor took 28.43 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-04 09:54:28,562 INFO L168 Benchmark]: RCFGBuilder took 278.09 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-04 09:54:28,563 INFO L168 Benchmark]: TraceAbstraction took 239215.89 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 76.5 MB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 296.5 MB). Peak memory consumption was 373.0 MB. Max. memory is 7.1 GB. [2018-10-04 09:54:28,565 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 0.51 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 44.53 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.43 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 278.09 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 239215.89 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 76.5 MB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 296.5 MB). Peak memory consumption was 373.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 41]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 41). Cancelled while BasicCegarLoop was analyzing trace of length 459 with TraceHistMax 113, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while NestedInterpolantsBuilder was constructing predicates for 457 interpolants. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. TIMEOUT Result, 239.1s OverallTime, 115 OverallIterations, 113 TraceHistogramMax, 27.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1026 SDtfs, 717 SDslu, 22282 SDs, 0 SdLazy, 9517 SolverSat, 238 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32428 GetRequests, 25986 SyntacticMatches, 0 SemanticMatches, 6442 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 168.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=459occurred in iteration=114, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 114 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.8s SsaConstructionTime, 8.7s SatisfiabilityAnalysisTime, 191.6s InterpolantComputationTime, 51980 NumberOfCodeBlocks, 51980 NumberOfCodeBlocksAsserted, 3381 NumberOfCheckSat, 51754 ConstructedInterpolants, 0 QuantifiedInterpolants, 46993742 SizeOfPredicates, 112 NumberOfNonLiveVariables, 39312 ConjunctsInSsa, 6552 ConjunctsInUnsatCore, 226 InterpolantComputations, 2 PerfectInterpolantSequences, 0/1885744 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/Luxembourg-ArraysIntegefied.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-04_09-54-28-575.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Luxembourg-ArraysIntegefied.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-04_09-54-28-575.csv Completed graceful shutdown