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/20170304-DifficultPathPrograms/array3.i_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2eb0a67 [2018-10-03 09:08:10,386 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-03 09:08:10,388 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-03 09:08:10,406 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-03 09:08:10,407 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-03 09:08:10,408 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-03 09:08:10,409 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-03 09:08:10,412 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-03 09:08:10,413 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-03 09:08:10,416 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-03 09:08:10,418 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-03 09:08:10,419 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-03 09:08:10,420 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-03 09:08:10,421 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-03 09:08:10,430 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-03 09:08:10,431 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-03 09:08:10,431 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-03 09:08:10,435 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-03 09:08:10,439 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-03 09:08:10,443 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-03 09:08:10,444 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-03 09:08:10,445 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-03 09:08:10,448 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-03 09:08:10,460 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 [2018-10-03 09:08:10,484 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-03 09:08:10,484 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-03 09:08:10,485 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-03 09:08:10,485 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-03 09:08:10,487 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-03 09:08:10,487 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-03 09:08:10,487 INFO L133 SettingsManager]: * Use SBE=true [2018-10-03 09:08:10,487 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-03 09:08:10,488 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-03 09:08:10,488 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-03 09:08:10,488 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-03 09:08:10,488 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-03 09:08:10,490 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-03 09:08:10,490 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-03 09:08:10,490 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-03 09:08:10,490 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-03 09:08:10,491 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-03 09:08:10,491 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-03 09:08:10,491 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-03 09:08:10,491 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-03 09:08:10,493 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-03 09:08:10,493 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-03 09:08:10,493 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-03 09:08:10,493 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-03 09:08:10,493 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-03 09:08:10,494 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-03 09:08:10,494 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-03 09:08:10,494 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-03 09:08:10,494 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-03 09:08:10,494 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-03 09:08:10,495 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-03 09:08:10,566 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-03 09:08:10,582 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-03 09:08:10,588 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-03 09:08:10,589 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-03 09:08:10,590 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-03 09:08:10,591 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/array3.i_4.bpl [2018-10-03 09:08:10,591 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/array3.i_4.bpl' [2018-10-03 09:08:10,654 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-03 09:08:10,657 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-03 09:08:10,658 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-03 09:08:10,658 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-03 09:08:10,658 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-03 09:08:10,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "array3.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:08:10" (1/1) ... [2018-10-03 09:08:10,691 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "array3.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:08:10" (1/1) ... [2018-10-03 09:08:10,698 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-03 09:08:10,699 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-03 09:08:10,699 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-03 09:08:10,699 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-03 09:08:10,710 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "array3.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:08:10" (1/1) ... [2018-10-03 09:08:10,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "array3.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:08:10" (1/1) ... [2018-10-03 09:08:10,712 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "array3.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:08:10" (1/1) ... [2018-10-03 09:08:10,712 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "array3.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:08:10" (1/1) ... [2018-10-03 09:08:10,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "array3.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:08:10" (1/1) ... [2018-10-03 09:08:10,716 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "array3.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:08:10" (1/1) ... [2018-10-03 09:08:10,717 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "array3.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:08:10" (1/1) ... [2018-10-03 09:08:10,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-03 09:08:10,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-03 09:08:10,720 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-03 09:08:10,720 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-03 09:08:10,721 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "array3.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:08:10" (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 [2018-10-03 09:08:10,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-03 09:08:10,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-03 09:08:10,998 INFO L340 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-03 09:08:10,999 INFO L202 PluginConnector]: Adding new model array3.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 09:08:10 BoogieIcfgContainer [2018-10-03 09:08:10,999 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-03 09:08:11,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-03 09:08:11,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-03 09:08:11,004 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-03 09:08:11,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "array3.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:08:10" (1/2) ... [2018-10-03 09:08:11,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d885a3b and model type array3.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 09:08:11, skipping insertion in model container [2018-10-03 09:08:11,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "array3.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 09:08:10" (2/2) ... [2018-10-03 09:08:11,007 INFO L112 eAbstractionObserver]: Analyzing ICFG array3.i_4.bpl [2018-10-03 09:08:11,017 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-03 09:08:11,025 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-03 09:08:11,072 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-03 09:08:11,073 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-03 09:08:11,073 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-03 09:08:11,073 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-03 09:08:11,073 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-03 09:08:11,073 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-03 09:08:11,074 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-03 09:08:11,074 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-03 09:08:11,074 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-03 09:08:11,089 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2018-10-03 09:08:11,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-03 09:08:11,096 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:11,097 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-10-03 09:08:11,098 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:11,104 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:11,104 INFO L82 PathProgramCache]: Analyzing trace with hash 889539531, now seen corresponding path program 1 times [2018-10-03 09:08:11,106 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:11,107 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:11,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:11,152 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:08:11,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:11,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:11,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:11,247 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-03 09:08:11,247 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-03 09:08:11,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-03 09:08:11,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-03 09:08:11,267 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:11,270 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2018-10-03 09:08:11,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:11,352 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2018-10-03 09:08:11,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-03 09:08:11,355 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2018-10-03 09:08:11,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:11,370 INFO L225 Difference]: With dead ends: 17 [2018-10-03 09:08:11,371 INFO L226 Difference]: Without dead ends: 11 [2018-10-03 09:08:11,381 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 [2018-10-03 09:08:11,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-03 09:08:11,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-03 09:08:11,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-03 09:08:11,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2018-10-03 09:08:11,450 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 6 [2018-10-03 09:08:11,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:11,451 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-10-03 09:08:11,451 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-03 09:08:11,451 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2018-10-03 09:08:11,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-03 09:08:11,452 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:11,452 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2018-10-03 09:08:11,452 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:11,452 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:11,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1897191999, now seen corresponding path program 1 times [2018-10-03 09:08:11,453 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:11,453 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:11,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:11,454 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:08:11,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:11,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:11,514 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-03 09:08:11,514 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:11,514 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 [2018-10-03 09:08:11,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:08:11,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:11,555 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:11,716 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-03 09:08:11,748 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:11,749 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-10-03 09:08:11,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-03 09:08:11,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-03 09:08:11,750 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:11,751 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 4 states. [2018-10-03 09:08:11,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:11,870 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2018-10-03 09:08:11,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-03 09:08:11,871 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-10-03 09:08:11,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:11,871 INFO L225 Difference]: With dead ends: 21 [2018-10-03 09:08:11,872 INFO L226 Difference]: Without dead ends: 15 [2018-10-03 09:08:11,874 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 [2018-10-03 09:08:11,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-03 09:08:11,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-10-03 09:08:11,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-03 09:08:11,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-10-03 09:08:11,878 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2018-10-03 09:08:11,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:11,879 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2018-10-03 09:08:11,879 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-03 09:08:11,879 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2018-10-03 09:08:11,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-03 09:08:11,880 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:11,880 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1] [2018-10-03 09:08:11,880 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:11,880 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:11,880 INFO L82 PathProgramCache]: Analyzing trace with hash 87273139, now seen corresponding path program 2 times [2018-10-03 09:08:11,881 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:11,881 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:11,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:11,882 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:08:11,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:11,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:12,013 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-03 09:08:12,013 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:12,014 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:08:12,023 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:08:12,050 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:08:12,051 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:12,052 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:12,093 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-03 09:08:12,114 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:12,115 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-03 09:08:12,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-03 09:08:12,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-03 09:08:12,115 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:12,116 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 5 states. [2018-10-03 09:08:12,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:12,222 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2018-10-03 09:08:12,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-03 09:08:12,223 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-10-03 09:08:12,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:12,224 INFO L225 Difference]: With dead ends: 27 [2018-10-03 09:08:12,224 INFO L226 Difference]: Without dead ends: 19 [2018-10-03 09:08:12,224 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 3 [2018-10-03 09:08:12,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-03 09:08:12,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-03 09:08:12,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-03 09:08:12,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-10-03 09:08:12,232 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 14 [2018-10-03 09:08:12,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:12,232 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2018-10-03 09:08:12,233 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-03 09:08:12,233 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2018-10-03 09:08:12,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-03 09:08:12,234 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:12,234 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1] [2018-10-03 09:08:12,234 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:12,234 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:12,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1310275289, now seen corresponding path program 3 times [2018-10-03 09:08:12,235 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:12,235 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:12,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:12,236 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:12,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:12,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:12,421 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-10-03 09:08:12,422 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:12,422 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:08:12,441 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:08:12,503 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-03 09:08:12,503 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:12,505 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:12,587 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-10-03 09:08:12,623 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:12,624 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-03 09:08:12,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-03 09:08:12,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-03 09:08:12,625 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:12,625 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 6 states. [2018-10-03 09:08:12,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:12,700 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2018-10-03 09:08:12,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-03 09:08:12,701 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-10-03 09:08:12,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:12,702 INFO L225 Difference]: With dead ends: 33 [2018-10-03 09:08:12,702 INFO L226 Difference]: Without dead ends: 23 [2018-10-03 09:08:12,703 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 4 [2018-10-03 09:08:12,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-03 09:08:12,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-03 09:08:12,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-03 09:08:12,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-10-03 09:08:12,709 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 18 [2018-10-03 09:08:12,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:12,709 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2018-10-03 09:08:12,710 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-03 09:08:12,710 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2018-10-03 09:08:12,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-03 09:08:12,711 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:12,711 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1] [2018-10-03 09:08:12,711 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:12,711 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:12,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1731406235, now seen corresponding path program 4 times [2018-10-03 09:08:12,712 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:12,712 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:12,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:12,713 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:12,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:12,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:12,861 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-03 09:08:12,862 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:12,862 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 [2018-10-03 09:08:12,877 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:08:12,919 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:08:12,920 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:12,922 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:13,056 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-03 09:08:13,081 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:13,081 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-03 09:08:13,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-03 09:08:13,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-03 09:08:13,082 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:13,082 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 7 states. [2018-10-03 09:08:13,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:13,139 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2018-10-03 09:08:13,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-03 09:08:13,142 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2018-10-03 09:08:13,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:13,143 INFO L225 Difference]: With dead ends: 39 [2018-10-03 09:08:13,143 INFO L226 Difference]: Without dead ends: 27 [2018-10-03 09:08:13,144 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 [2018-10-03 09:08:13,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-03 09:08:13,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-10-03 09:08:13,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-10-03 09:08:13,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-10-03 09:08:13,150 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 22 [2018-10-03 09:08:13,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:13,150 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2018-10-03 09:08:13,151 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-03 09:08:13,151 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2018-10-03 09:08:13,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-03 09:08:13,152 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:13,152 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1] [2018-10-03 09:08:13,152 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:13,152 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:13,153 INFO L82 PathProgramCache]: Analyzing trace with hash 77451279, now seen corresponding path program 5 times [2018-10-03 09:08:13,153 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:13,153 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:13,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:13,154 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:13,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:13,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:13,302 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-10-03 09:08:13,302 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:13,302 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 [2018-10-03 09:08:13,310 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:08:13,355 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-10-03 09:08:13,356 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:13,358 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:13,415 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-10-03 09:08:13,440 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:13,440 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-03 09:08:13,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-03 09:08:13,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-03 09:08:13,441 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:13,441 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 8 states. [2018-10-03 09:08:13,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:13,727 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2018-10-03 09:08:13,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-03 09:08:13,727 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2018-10-03 09:08:13,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:13,728 INFO L225 Difference]: With dead ends: 45 [2018-10-03 09:08:13,728 INFO L226 Difference]: Without dead ends: 31 [2018-10-03 09:08:13,729 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 6 [2018-10-03 09:08:13,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-03 09:08:13,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-03 09:08:13,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-03 09:08:13,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2018-10-03 09:08:13,735 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 26 [2018-10-03 09:08:13,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:13,735 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2018-10-03 09:08:13,735 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-03 09:08:13,735 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2018-10-03 09:08:13,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-03 09:08:13,736 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:13,736 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1] [2018-10-03 09:08:13,737 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:13,737 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:13,737 INFO L82 PathProgramCache]: Analyzing trace with hash 422296707, now seen corresponding path program 6 times [2018-10-03 09:08:13,737 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:13,738 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:13,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:13,739 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:13,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:13,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:14,047 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-10-03 09:08:14,048 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:14,048 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 [2018-10-03 09:08:14,062 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:08:14,101 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-03 09:08:14,102 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:14,105 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:14,162 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-10-03 09:08:14,182 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:14,183 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-03 09:08:14,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-03 09:08:14,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-03 09:08:14,183 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:14,184 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 9 states. [2018-10-03 09:08:14,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:14,265 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2018-10-03 09:08:14,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-03 09:08:14,266 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2018-10-03 09:08:14,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:14,267 INFO L225 Difference]: With dead ends: 51 [2018-10-03 09:08:14,267 INFO L226 Difference]: Without dead ends: 35 [2018-10-03 09:08:14,267 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 7 [2018-10-03 09:08:14,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-03 09:08:14,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-10-03 09:08:14,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-03 09:08:14,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2018-10-03 09:08:14,273 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 30 [2018-10-03 09:08:14,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:14,273 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2018-10-03 09:08:14,273 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-03 09:08:14,274 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2018-10-03 09:08:14,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-03 09:08:14,275 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:14,275 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1] [2018-10-03 09:08:14,275 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:14,275 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:14,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1553862921, now seen corresponding path program 7 times [2018-10-03 09:08:14,276 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:14,276 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:14,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:14,277 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:14,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:14,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:14,592 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-10-03 09:08:14,592 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:14,592 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 [2018-10-03 09:08:14,606 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:08:14,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:14,639 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:14,741 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-10-03 09:08:14,762 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:14,762 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-03 09:08:14,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-03 09:08:14,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-03 09:08:14,763 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:14,763 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 10 states. [2018-10-03 09:08:14,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:14,868 INFO L93 Difference]: Finished difference Result 57 states and 60 transitions. [2018-10-03 09:08:14,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-03 09:08:14,869 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2018-10-03 09:08:14,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:14,871 INFO L225 Difference]: With dead ends: 57 [2018-10-03 09:08:14,871 INFO L226 Difference]: Without dead ends: 39 [2018-10-03 09:08:14,872 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 8 [2018-10-03 09:08:14,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-03 09:08:14,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-10-03 09:08:14,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-03 09:08:14,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2018-10-03 09:08:14,879 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 34 [2018-10-03 09:08:14,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:14,879 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2018-10-03 09:08:14,879 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-03 09:08:14,879 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2018-10-03 09:08:14,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-03 09:08:14,880 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:14,881 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 1, 1, 1, 1] [2018-10-03 09:08:14,881 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:14,881 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:14,881 INFO L82 PathProgramCache]: Analyzing trace with hash -783980693, now seen corresponding path program 8 times [2018-10-03 09:08:14,881 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:14,882 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:14,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:14,883 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:08:14,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:14,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:15,075 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-10-03 09:08:15,075 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:15,075 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 [2018-10-03 09:08:15,091 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:08:15,114 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:08:15,114 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:15,116 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:15,211 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-10-03 09:08:15,232 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:15,233 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-03 09:08:15,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-03 09:08:15,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-03 09:08:15,234 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:15,235 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 11 states. [2018-10-03 09:08:15,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:15,434 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2018-10-03 09:08:15,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-03 09:08:15,438 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2018-10-03 09:08:15,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:15,439 INFO L225 Difference]: With dead ends: 63 [2018-10-03 09:08:15,439 INFO L226 Difference]: Without dead ends: 43 [2018-10-03 09:08:15,439 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 9 [2018-10-03 09:08:15,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-03 09:08:15,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-10-03 09:08:15,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-03 09:08:15,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2018-10-03 09:08:15,445 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 38 [2018-10-03 09:08:15,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:15,445 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2018-10-03 09:08:15,446 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-03 09:08:15,446 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2018-10-03 09:08:15,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-03 09:08:15,447 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:15,447 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 1, 1, 1, 1] [2018-10-03 09:08:15,447 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:15,448 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:15,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1067768353, now seen corresponding path program 9 times [2018-10-03 09:08:15,448 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:15,448 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:15,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:15,449 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:15,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:15,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:15,670 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-10-03 09:08:15,671 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:15,671 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 [2018-10-03 09:08:15,681 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:08:15,823 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-10-03 09:08:15,824 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:15,827 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:16,018 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-10-03 09:08:16,039 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:16,039 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-10-03 09:08:16,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-03 09:08:16,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-03 09:08:16,040 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:16,040 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 12 states. [2018-10-03 09:08:16,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:16,113 INFO L93 Difference]: Finished difference Result 69 states and 72 transitions. [2018-10-03 09:08:16,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-03 09:08:16,113 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 42 [2018-10-03 09:08:16,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:16,114 INFO L225 Difference]: With dead ends: 69 [2018-10-03 09:08:16,114 INFO L226 Difference]: Without dead ends: 47 [2018-10-03 09:08:16,115 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 10 [2018-10-03 09:08:16,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-03 09:08:16,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-03 09:08:16,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-03 09:08:16,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2018-10-03 09:08:16,122 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 42 [2018-10-03 09:08:16,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:16,123 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2018-10-03 09:08:16,123 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-03 09:08:16,123 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2018-10-03 09:08:16,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-03 09:08:16,124 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:16,124 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1] [2018-10-03 09:08:16,124 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:16,125 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:16,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1034431059, now seen corresponding path program 10 times [2018-10-03 09:08:16,125 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:16,125 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:16,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:16,126 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:16,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:16,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:16,303 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2018-10-03 09:08:16,304 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:16,304 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:08:16,311 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:08:16,340 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:08:16,340 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:16,343 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:16,429 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2018-10-03 09:08:16,450 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:16,450 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-10-03 09:08:16,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-03 09:08:16,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-03 09:08:16,451 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:16,451 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 13 states. [2018-10-03 09:08:16,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:16,533 INFO L93 Difference]: Finished difference Result 75 states and 78 transitions. [2018-10-03 09:08:16,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-03 09:08:16,534 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 46 [2018-10-03 09:08:16,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:16,535 INFO L225 Difference]: With dead ends: 75 [2018-10-03 09:08:16,535 INFO L226 Difference]: Without dead ends: 51 [2018-10-03 09:08:16,536 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 [2018-10-03 09:08:16,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-03 09:08:16,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-03 09:08:16,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-03 09:08:16,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2018-10-03 09:08:16,543 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 46 [2018-10-03 09:08:16,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:16,543 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2018-10-03 09:08:16,543 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-03 09:08:16,544 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2018-10-03 09:08:16,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-03 09:08:16,544 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:16,545 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 1, 1, 1, 1] [2018-10-03 09:08:16,545 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:16,545 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:16,545 INFO L82 PathProgramCache]: Analyzing trace with hash -2051967801, now seen corresponding path program 11 times [2018-10-03 09:08:16,546 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:16,546 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:16,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:16,547 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:16,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:16,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:16,735 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2018-10-03 09:08:16,736 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:16,736 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 [2018-10-03 09:08:16,746 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:08:16,805 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-10-03 09:08:16,806 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:16,809 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:16,888 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2018-10-03 09:08:16,911 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:16,911 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-10-03 09:08:16,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-03 09:08:16,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-03 09:08:16,912 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:16,912 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 14 states. [2018-10-03 09:08:16,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:16,978 INFO L93 Difference]: Finished difference Result 81 states and 84 transitions. [2018-10-03 09:08:16,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-03 09:08:16,978 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 50 [2018-10-03 09:08:16,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:16,980 INFO L225 Difference]: With dead ends: 81 [2018-10-03 09:08:16,980 INFO L226 Difference]: Without dead ends: 55 [2018-10-03 09:08:16,981 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 12 [2018-10-03 09:08:16,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-03 09:08:16,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-10-03 09:08:16,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-03 09:08:16,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2018-10-03 09:08:16,988 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 50 [2018-10-03 09:08:16,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:16,988 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2018-10-03 09:08:16,988 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-03 09:08:16,989 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2018-10-03 09:08:16,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-03 09:08:16,990 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:16,990 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 1, 1, 1, 1] [2018-10-03 09:08:16,990 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:16,990 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:16,990 INFO L82 PathProgramCache]: Analyzing trace with hash 75236667, now seen corresponding path program 12 times [2018-10-03 09:08:16,991 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:16,991 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:16,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:16,992 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:16,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:17,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:17,292 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2018-10-03 09:08:17,293 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:17,293 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 [2018-10-03 09:08:17,322 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:08:17,370 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-10-03 09:08:17,371 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:17,374 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:17,464 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2018-10-03 09:08:17,485 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:17,486 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-10-03 09:08:17,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-03 09:08:17,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-03 09:08:17,486 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:17,486 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 15 states. [2018-10-03 09:08:17,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:17,621 INFO L93 Difference]: Finished difference Result 87 states and 90 transitions. [2018-10-03 09:08:17,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-03 09:08:17,621 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 54 [2018-10-03 09:08:17,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:17,622 INFO L225 Difference]: With dead ends: 87 [2018-10-03 09:08:17,622 INFO L226 Difference]: Without dead ends: 59 [2018-10-03 09:08:17,622 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 13 [2018-10-03 09:08:17,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-03 09:08:17,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-10-03 09:08:17,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-03 09:08:17,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2018-10-03 09:08:17,628 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 54 [2018-10-03 09:08:17,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:17,628 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2018-10-03 09:08:17,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-03 09:08:17,628 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2018-10-03 09:08:17,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-03 09:08:17,629 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:17,629 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 1, 1, 1, 1] [2018-10-03 09:08:17,629 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:17,630 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:17,630 INFO L82 PathProgramCache]: Analyzing trace with hash 361552815, now seen corresponding path program 13 times [2018-10-03 09:08:17,630 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:17,630 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:17,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:17,631 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:17,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:17,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:17,926 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2018-10-03 09:08:17,926 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:17,926 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 [2018-10-03 09:08:17,934 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:08:17,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:17,973 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:18,123 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2018-10-03 09:08:18,143 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:18,143 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-10-03 09:08:18,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-03 09:08:18,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-03 09:08:18,144 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:18,144 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand 16 states. [2018-10-03 09:08:18,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:18,330 INFO L93 Difference]: Finished difference Result 93 states and 96 transitions. [2018-10-03 09:08:18,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-03 09:08:18,330 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 58 [2018-10-03 09:08:18,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:18,331 INFO L225 Difference]: With dead ends: 93 [2018-10-03 09:08:18,331 INFO L226 Difference]: Without dead ends: 63 [2018-10-03 09:08:18,331 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 14 [2018-10-03 09:08:18,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-10-03 09:08:18,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-10-03 09:08:18,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-10-03 09:08:18,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2018-10-03 09:08:18,348 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 58 [2018-10-03 09:08:18,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:18,348 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2018-10-03 09:08:18,348 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-03 09:08:18,348 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2018-10-03 09:08:18,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-03 09:08:18,349 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:18,349 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 1, 1, 1, 1] [2018-10-03 09:08:18,352 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:18,353 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:18,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1008142301, now seen corresponding path program 14 times [2018-10-03 09:08:18,353 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:18,353 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:18,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:18,354 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:08:18,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:18,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:18,845 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2018-10-03 09:08:18,845 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:18,846 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:08:18,855 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:08:18,891 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:08:18,891 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:18,893 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:19,104 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2018-10-03 09:08:19,124 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:19,125 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-10-03 09:08:19,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-03 09:08:19,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-03 09:08:19,125 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:19,125 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 17 states. [2018-10-03 09:08:19,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:19,201 INFO L93 Difference]: Finished difference Result 99 states and 102 transitions. [2018-10-03 09:08:19,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-03 09:08:19,201 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 62 [2018-10-03 09:08:19,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:19,203 INFO L225 Difference]: With dead ends: 99 [2018-10-03 09:08:19,203 INFO L226 Difference]: Without dead ends: 67 [2018-10-03 09:08:19,203 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.3s impTime 15 [2018-10-03 09:08:19,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-10-03 09:08:19,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-10-03 09:08:19,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-10-03 09:08:19,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2018-10-03 09:08:19,209 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 62 [2018-10-03 09:08:19,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:19,209 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2018-10-03 09:08:19,209 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-03 09:08:19,210 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2018-10-03 09:08:19,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-03 09:08:19,211 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:19,211 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 1, 1, 1, 1] [2018-10-03 09:08:19,211 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:19,212 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:19,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1978312041, now seen corresponding path program 15 times [2018-10-03 09:08:19,212 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:19,212 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:19,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:19,213 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:19,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:19,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:19,406 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2018-10-03 09:08:19,407 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:19,407 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:08:19,415 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:08:19,512 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-10-03 09:08:19,512 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:19,515 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:19,618 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2018-10-03 09:08:19,639 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:19,640 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-10-03 09:08:19,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-03 09:08:19,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-03 09:08:19,640 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:19,641 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand 18 states. [2018-10-03 09:08:19,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:19,896 INFO L93 Difference]: Finished difference Result 105 states and 108 transitions. [2018-10-03 09:08:19,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-03 09:08:19,896 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 66 [2018-10-03 09:08:19,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:19,897 INFO L225 Difference]: With dead ends: 105 [2018-10-03 09:08:19,897 INFO L226 Difference]: Without dead ends: 71 [2018-10-03 09:08:19,898 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 16 [2018-10-03 09:08:19,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-03 09:08:19,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-10-03 09:08:19,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-10-03 09:08:19,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2018-10-03 09:08:19,903 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 66 [2018-10-03 09:08:19,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:19,903 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2018-10-03 09:08:19,903 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-03 09:08:19,904 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2018-10-03 09:08:19,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-03 09:08:19,905 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:19,905 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 1, 1, 1, 1] [2018-10-03 09:08:19,905 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:19,905 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:19,905 INFO L82 PathProgramCache]: Analyzing trace with hash 303497995, now seen corresponding path program 16 times [2018-10-03 09:08:19,905 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:19,906 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:19,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:19,906 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:19,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:19,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:20,232 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2018-10-03 09:08:20,232 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:20,232 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 [2018-10-03 09:08:20,241 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:08:20,272 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:08:20,272 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:20,275 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:20,380 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2018-10-03 09:08:20,400 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:20,401 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-10-03 09:08:20,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-03 09:08:20,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-03 09:08:20,401 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:20,402 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand 19 states. [2018-10-03 09:08:20,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:20,480 INFO L93 Difference]: Finished difference Result 111 states and 114 transitions. [2018-10-03 09:08:20,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-03 09:08:20,480 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 70 [2018-10-03 09:08:20,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:20,481 INFO L225 Difference]: With dead ends: 111 [2018-10-03 09:08:20,481 INFO L226 Difference]: Without dead ends: 75 [2018-10-03 09:08:20,482 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.2s impTime 17 [2018-10-03 09:08:20,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-10-03 09:08:20,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-10-03 09:08:20,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-03 09:08:20,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2018-10-03 09:08:20,488 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 70 [2018-10-03 09:08:20,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:20,488 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2018-10-03 09:08:20,489 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-03 09:08:20,489 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2018-10-03 09:08:20,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-03 09:08:20,489 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:20,490 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 1, 1, 1, 1] [2018-10-03 09:08:20,490 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:20,490 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:20,490 INFO L82 PathProgramCache]: Analyzing trace with hash -177016449, now seen corresponding path program 17 times [2018-10-03 09:08:20,490 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:20,490 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:20,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:20,491 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:20,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:20,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:20,763 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-10-03 09:08:20,763 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:20,763 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 [2018-10-03 09:08:20,771 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:08:20,842 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-10-03 09:08:20,842 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:20,844 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:21,115 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-10-03 09:08:21,153 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:21,153 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-10-03 09:08:21,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-03 09:08:21,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-03 09:08:21,154 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:21,154 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand 20 states. [2018-10-03 09:08:21,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:21,524 INFO L93 Difference]: Finished difference Result 117 states and 120 transitions. [2018-10-03 09:08:21,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-03 09:08:21,524 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 74 [2018-10-03 09:08:21,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:21,526 INFO L225 Difference]: With dead ends: 117 [2018-10-03 09:08:21,526 INFO L226 Difference]: Without dead ends: 79 [2018-10-03 09:08:21,526 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.1s impTime 18 [2018-10-03 09:08:21,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-10-03 09:08:21,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-10-03 09:08:21,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-10-03 09:08:21,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2018-10-03 09:08:21,532 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 74 [2018-10-03 09:08:21,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:21,532 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2018-10-03 09:08:21,532 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-03 09:08:21,532 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2018-10-03 09:08:21,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-03 09:08:21,533 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:21,533 INFO L375 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 1, 1, 1, 1] [2018-10-03 09:08:21,534 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:21,534 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:21,534 INFO L82 PathProgramCache]: Analyzing trace with hash 2100176371, now seen corresponding path program 18 times [2018-10-03 09:08:21,534 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:21,534 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:21,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:21,535 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:21,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:21,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:21,872 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2018-10-03 09:08:21,873 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:21,873 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 [2018-10-03 09:08:21,880 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:08:21,939 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-10-03 09:08:21,939 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:21,942 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:22,053 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2018-10-03 09:08:22,084 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:22,084 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-10-03 09:08:22,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-03 09:08:22,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-03 09:08:22,085 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:22,086 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand 21 states. [2018-10-03 09:08:22,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:22,267 INFO L93 Difference]: Finished difference Result 123 states and 126 transitions. [2018-10-03 09:08:22,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-03 09:08:22,268 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 78 [2018-10-03 09:08:22,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:22,269 INFO L225 Difference]: With dead ends: 123 [2018-10-03 09:08:22,269 INFO L226 Difference]: Without dead ends: 83 [2018-10-03 09:08:22,270 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 19 [2018-10-03 09:08:22,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-10-03 09:08:22,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-10-03 09:08:22,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-10-03 09:08:22,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2018-10-03 09:08:22,275 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 78 [2018-10-03 09:08:22,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:22,276 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2018-10-03 09:08:22,276 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-03 09:08:22,276 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2018-10-03 09:08:22,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-03 09:08:22,277 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:22,277 INFO L375 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 1, 1, 1, 1] [2018-10-03 09:08:22,277 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:22,278 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:22,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1640865895, now seen corresponding path program 19 times [2018-10-03 09:08:22,278 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:22,278 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:22,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:22,279 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:22,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:22,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:23,272 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-10-03 09:08:23,273 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:23,273 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:08:23,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:08:23,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:23,324 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:23,478 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-10-03 09:08:23,499 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:23,499 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-10-03 09:08:23,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-03 09:08:23,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-03 09:08:23,500 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:23,500 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand 22 states. [2018-10-03 09:08:23,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:23,717 INFO L93 Difference]: Finished difference Result 129 states and 132 transitions. [2018-10-03 09:08:23,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-03 09:08:23,717 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 82 [2018-10-03 09:08:23,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:23,718 INFO L225 Difference]: With dead ends: 129 [2018-10-03 09:08:23,719 INFO L226 Difference]: Without dead ends: 87 [2018-10-03 09:08:23,719 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.7s impTime 20 [2018-10-03 09:08:23,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-10-03 09:08:23,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-10-03 09:08:23,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-10-03 09:08:23,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2018-10-03 09:08:23,726 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 82 [2018-10-03 09:08:23,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:23,726 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2018-10-03 09:08:23,726 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-03 09:08:23,726 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2018-10-03 09:08:23,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-03 09:08:23,727 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:23,727 INFO L375 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 1, 1, 1, 1] [2018-10-03 09:08:23,728 INFO L423 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:23,728 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:23,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1957273381, now seen corresponding path program 20 times [2018-10-03 09:08:23,728 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:23,728 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:23,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:23,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:08:23,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:23,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:24,307 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2018-10-03 09:08:24,307 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:24,307 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 [2018-10-03 09:08:24,317 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:08:24,365 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:08:24,366 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:24,368 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:24,482 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2018-10-03 09:08:24,505 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:24,505 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-10-03 09:08:24,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-03 09:08:24,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-03 09:08:24,506 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:24,506 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand 23 states. [2018-10-03 09:08:24,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:24,583 INFO L93 Difference]: Finished difference Result 135 states and 138 transitions. [2018-10-03 09:08:24,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-03 09:08:24,583 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 86 [2018-10-03 09:08:24,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:24,584 INFO L225 Difference]: With dead ends: 135 [2018-10-03 09:08:24,584 INFO L226 Difference]: Without dead ends: 91 [2018-10-03 09:08:24,585 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.3s impTime 21 [2018-10-03 09:08:24,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-03 09:08:24,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-10-03 09:08:24,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-10-03 09:08:24,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2018-10-03 09:08:24,588 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 86 [2018-10-03 09:08:24,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:24,588 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2018-10-03 09:08:24,588 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-03 09:08:24,588 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2018-10-03 09:08:24,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-03 09:08:24,589 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:24,589 INFO L375 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 1, 1, 1, 1] [2018-10-03 09:08:24,590 INFO L423 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:24,590 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:24,590 INFO L82 PathProgramCache]: Analyzing trace with hash -783456433, now seen corresponding path program 21 times [2018-10-03 09:08:24,590 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:24,590 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:24,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:24,591 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:24,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:24,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:24,947 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2018-10-03 09:08:24,948 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:24,948 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 [2018-10-03 09:08:24,960 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:08:25,091 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-10-03 09:08:25,091 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:25,095 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:25,366 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2018-10-03 09:08:25,388 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:25,388 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-10-03 09:08:25,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-03 09:08:25,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-03 09:08:25,389 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:25,389 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand 24 states. [2018-10-03 09:08:25,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:25,508 INFO L93 Difference]: Finished difference Result 141 states and 144 transitions. [2018-10-03 09:08:25,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-03 09:08:25,510 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 90 [2018-10-03 09:08:25,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:25,511 INFO L225 Difference]: With dead ends: 141 [2018-10-03 09:08:25,511 INFO L226 Difference]: Without dead ends: 95 [2018-10-03 09:08:25,511 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.2s impTime 22 [2018-10-03 09:08:25,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-10-03 09:08:25,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-10-03 09:08:25,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-10-03 09:08:25,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2018-10-03 09:08:25,515 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 90 [2018-10-03 09:08:25,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:25,515 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2018-10-03 09:08:25,515 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-03 09:08:25,515 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2018-10-03 09:08:25,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-10-03 09:08:25,516 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:25,516 INFO L375 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 1, 1, 1, 1] [2018-10-03 09:08:25,516 INFO L423 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:25,516 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:25,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1162366013, now seen corresponding path program 22 times [2018-10-03 09:08:25,517 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:25,517 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:25,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:25,518 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:25,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:25,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:25,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2018-10-03 09:08:25,897 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:25,897 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 [2018-10-03 09:08:25,905 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:08:25,946 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:08:25,946 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:25,948 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:26,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2018-10-03 09:08:26,111 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:26,111 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-10-03 09:08:26,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-03 09:08:26,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-03 09:08:26,112 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:26,112 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand 25 states. [2018-10-03 09:08:26,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:26,204 INFO L93 Difference]: Finished difference Result 147 states and 150 transitions. [2018-10-03 09:08:26,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-03 09:08:26,204 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 94 [2018-10-03 09:08:26,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:26,205 INFO L225 Difference]: With dead ends: 147 [2018-10-03 09:08:26,206 INFO L226 Difference]: Without dead ends: 99 [2018-10-03 09:08:26,206 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 23 [2018-10-03 09:08:26,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-10-03 09:08:26,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-10-03 09:08:26,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-10-03 09:08:26,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2018-10-03 09:08:26,210 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 94 [2018-10-03 09:08:26,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:26,211 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2018-10-03 09:08:26,211 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-03 09:08:26,211 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2018-10-03 09:08:26,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-03 09:08:26,211 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:26,212 INFO L375 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 1, 1, 1, 1] [2018-10-03 09:08:26,212 INFO L423 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:26,212 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:26,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1041909303, now seen corresponding path program 23 times [2018-10-03 09:08:26,212 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:26,212 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:26,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:26,213 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:26,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:26,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:27,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2018-10-03 09:08:27,204 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:27,205 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 [2018-10-03 09:08:27,212 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:08:27,372 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-10-03 09:08:27,372 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:27,374 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:27,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2018-10-03 09:08:27,497 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:27,497 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-10-03 09:08:27,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-03 09:08:27,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-03 09:08:27,498 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:27,498 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand 26 states. [2018-10-03 09:08:27,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:27,587 INFO L93 Difference]: Finished difference Result 153 states and 156 transitions. [2018-10-03 09:08:27,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-03 09:08:27,588 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 98 [2018-10-03 09:08:27,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:27,589 INFO L225 Difference]: With dead ends: 153 [2018-10-03 09:08:27,589 INFO L226 Difference]: Without dead ends: 103 [2018-10-03 09:08:27,590 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.6s impTime 24 [2018-10-03 09:08:27,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-10-03 09:08:27,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-10-03 09:08:27,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-10-03 09:08:27,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2018-10-03 09:08:27,594 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 98 [2018-10-03 09:08:27,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:27,594 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2018-10-03 09:08:27,594 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-03 09:08:27,594 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2018-10-03 09:08:27,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-03 09:08:27,595 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:27,595 INFO L375 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 1, 1, 1, 1] [2018-10-03 09:08:27,595 INFO L423 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:27,595 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:27,595 INFO L82 PathProgramCache]: Analyzing trace with hash -2122703189, now seen corresponding path program 24 times [2018-10-03 09:08:27,595 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:27,596 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:27,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:27,596 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:27,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:27,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:28,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 600 trivial. 0 not checked. [2018-10-03 09:08:28,023 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:28,023 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 [2018-10-03 09:08:28,030 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:08:28,171 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-10-03 09:08:28,171 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:28,175 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:28,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 600 trivial. 0 not checked. [2018-10-03 09:08:28,295 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:28,295 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-10-03 09:08:28,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-03 09:08:28,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-03 09:08:28,296 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:28,296 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand 27 states. [2018-10-03 09:08:28,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:28,437 INFO L93 Difference]: Finished difference Result 159 states and 162 transitions. [2018-10-03 09:08:28,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-03 09:08:28,437 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 102 [2018-10-03 09:08:28,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:28,438 INFO L225 Difference]: With dead ends: 159 [2018-10-03 09:08:28,438 INFO L226 Difference]: Without dead ends: 107 [2018-10-03 09:08:28,439 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 25 [2018-10-03 09:08:28,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-10-03 09:08:28,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-10-03 09:08:28,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-10-03 09:08:28,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 108 transitions. [2018-10-03 09:08:28,442 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 108 transitions. Word has length 102 [2018-10-03 09:08:28,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:28,443 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 108 transitions. [2018-10-03 09:08:28,443 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-03 09:08:28,443 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 108 transitions. [2018-10-03 09:08:28,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-03 09:08:28,443 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:28,444 INFO L375 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 1, 1, 1, 1] [2018-10-03 09:08:28,444 INFO L423 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:28,444 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:28,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1705231073, now seen corresponding path program 25 times [2018-10-03 09:08:28,444 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:28,444 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:28,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:28,445 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:28,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:28,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:28,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2018-10-03 09:08:28,960 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:28,960 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 [2018-10-03 09:08:28,969 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:08:29,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:29,023 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:29,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2018-10-03 09:08:29,157 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:29,158 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-10-03 09:08:29,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-03 09:08:29,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-03 09:08:29,158 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:29,158 INFO L87 Difference]: Start difference. First operand 107 states and 108 transitions. Second operand 28 states. [2018-10-03 09:08:29,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:29,296 INFO L93 Difference]: Finished difference Result 165 states and 168 transitions. [2018-10-03 09:08:29,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-03 09:08:29,297 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 106 [2018-10-03 09:08:29,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:29,298 INFO L225 Difference]: With dead ends: 165 [2018-10-03 09:08:29,299 INFO L226 Difference]: Without dead ends: 111 [2018-10-03 09:08:29,299 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 26 [2018-10-03 09:08:29,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-10-03 09:08:29,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-10-03 09:08:29,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-10-03 09:08:29,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2018-10-03 09:08:29,305 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 106 [2018-10-03 09:08:29,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:29,305 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2018-10-03 09:08:29,305 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-03 09:08:29,305 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2018-10-03 09:08:29,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-03 09:08:29,306 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:29,306 INFO L375 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 1, 1, 1, 1] [2018-10-03 09:08:29,307 INFO L423 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:29,307 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:29,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1304797587, now seen corresponding path program 26 times [2018-10-03 09:08:29,307 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:29,307 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:29,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:29,308 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:08:29,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:29,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:29,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 702 trivial. 0 not checked. [2018-10-03 09:08:29,634 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:29,634 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 [2018-10-03 09:08:29,641 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:08:29,682 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:08:29,683 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:29,685 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:29,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 702 trivial. 0 not checked. [2018-10-03 09:08:29,850 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:29,850 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-10-03 09:08:29,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-03 09:08:29,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-03 09:08:29,851 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:29,851 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand 29 states. [2018-10-03 09:08:30,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:30,004 INFO L93 Difference]: Finished difference Result 171 states and 174 transitions. [2018-10-03 09:08:30,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-03 09:08:30,005 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 110 [2018-10-03 09:08:30,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:30,006 INFO L225 Difference]: With dead ends: 171 [2018-10-03 09:08:30,006 INFO L226 Difference]: Without dead ends: 115 [2018-10-03 09:08:30,007 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 27 [2018-10-03 09:08:30,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-10-03 09:08:30,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-10-03 09:08:30,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-10-03 09:08:30,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 116 transitions. [2018-10-03 09:08:30,011 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 116 transitions. Word has length 110 [2018-10-03 09:08:30,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:30,011 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 116 transitions. [2018-10-03 09:08:30,011 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-03 09:08:30,011 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 116 transitions. [2018-10-03 09:08:30,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-03 09:08:30,012 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:30,012 INFO L375 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 1, 1, 1, 1] [2018-10-03 09:08:30,013 INFO L423 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:30,013 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:30,013 INFO L82 PathProgramCache]: Analyzing trace with hash -801420281, now seen corresponding path program 27 times [2018-10-03 09:08:30,013 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:30,013 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:30,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:30,014 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:30,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:30,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:30,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2018-10-03 09:08:30,702 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:30,702 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 [2018-10-03 09:08:30,710 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:08:30,880 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-10-03 09:08:30,880 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:30,883 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:31,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2018-10-03 09:08:31,037 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:31,037 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-10-03 09:08:31,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-03 09:08:31,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-03 09:08:31,037 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:31,038 INFO L87 Difference]: Start difference. First operand 115 states and 116 transitions. Second operand 30 states. [2018-10-03 09:08:31,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:31,137 INFO L93 Difference]: Finished difference Result 177 states and 180 transitions. [2018-10-03 09:08:31,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-03 09:08:31,137 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 114 [2018-10-03 09:08:31,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:31,138 INFO L225 Difference]: With dead ends: 177 [2018-10-03 09:08:31,138 INFO L226 Difference]: Without dead ends: 119 [2018-10-03 09:08:31,139 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.4s impTime 28 [2018-10-03 09:08:31,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-10-03 09:08:31,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-10-03 09:08:31,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-10-03 09:08:31,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 120 transitions. [2018-10-03 09:08:31,143 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 120 transitions. Word has length 114 [2018-10-03 09:08:31,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:31,144 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 120 transitions. [2018-10-03 09:08:31,144 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-03 09:08:31,144 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 120 transitions. [2018-10-03 09:08:31,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-03 09:08:31,144 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:31,144 INFO L375 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 1, 1, 1, 1] [2018-10-03 09:08:31,145 INFO L423 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:31,145 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:31,145 INFO L82 PathProgramCache]: Analyzing trace with hash -2050868101, now seen corresponding path program 28 times [2018-10-03 09:08:31,145 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:31,145 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:31,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:31,146 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:31,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:31,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:32,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 812 trivial. 0 not checked. [2018-10-03 09:08:32,363 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:32,363 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 [2018-10-03 09:08:32,371 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:08:32,440 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:08:32,441 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:32,444 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:33,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 812 trivial. 0 not checked. [2018-10-03 09:08:33,244 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:33,244 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-10-03 09:08:33,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-03 09:08:33,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-03 09:08:33,245 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:33,245 INFO L87 Difference]: Start difference. First operand 119 states and 120 transitions. Second operand 31 states. [2018-10-03 09:08:33,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:33,366 INFO L93 Difference]: Finished difference Result 183 states and 186 transitions. [2018-10-03 09:08:33,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-03 09:08:33,366 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 118 [2018-10-03 09:08:33,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:33,368 INFO L225 Difference]: With dead ends: 183 [2018-10-03 09:08:33,368 INFO L226 Difference]: Without dead ends: 123 [2018-10-03 09:08:33,368 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 0.8s impTime 29 [2018-10-03 09:08:33,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-10-03 09:08:33,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-10-03 09:08:33,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-10-03 09:08:33,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 124 transitions. [2018-10-03 09:08:33,373 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 124 transitions. Word has length 118 [2018-10-03 09:08:33,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:33,373 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 124 transitions. [2018-10-03 09:08:33,373 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-03 09:08:33,373 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 124 transitions. [2018-10-03 09:08:33,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-03 09:08:33,375 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:33,375 INFO L375 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 1, 1, 1, 1] [2018-10-03 09:08:33,375 INFO L423 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:33,375 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:33,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1042320657, now seen corresponding path program 29 times [2018-10-03 09:08:33,376 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:33,376 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:33,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:33,377 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:33,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:33,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:33,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 870 trivial. 0 not checked. [2018-10-03 09:08:33,943 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:33,943 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 [2018-10-03 09:08:33,950 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:08:34,201 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-10-03 09:08:34,201 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:34,205 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:34,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 870 trivial. 0 not checked. [2018-10-03 09:08:34,343 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:34,343 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-10-03 09:08:34,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-03 09:08:34,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-03 09:08:34,344 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:34,344 INFO L87 Difference]: Start difference. First operand 123 states and 124 transitions. Second operand 32 states. [2018-10-03 09:08:34,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:34,464 INFO L93 Difference]: Finished difference Result 189 states and 192 transitions. [2018-10-03 09:08:34,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-03 09:08:34,464 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 122 [2018-10-03 09:08:34,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:34,465 INFO L225 Difference]: With dead ends: 189 [2018-10-03 09:08:34,465 INFO L226 Difference]: Without dead ends: 127 [2018-10-03 09:08:34,466 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.4s impTime 30 [2018-10-03 09:08:34,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-10-03 09:08:34,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-10-03 09:08:34,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-10-03 09:08:34,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2018-10-03 09:08:34,471 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 122 [2018-10-03 09:08:34,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:34,471 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions. [2018-10-03 09:08:34,471 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-03 09:08:34,471 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions. [2018-10-03 09:08:34,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-03 09:08:34,472 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:34,472 INFO L375 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 1, 1, 1, 1] [2018-10-03 09:08:34,472 INFO L423 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:34,472 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:34,473 INFO L82 PathProgramCache]: Analyzing trace with hash -2020085917, now seen corresponding path program 30 times [2018-10-03 09:08:34,473 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:34,473 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:34,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:34,473 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:34,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:34,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:35,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2018-10-03 09:08:35,047 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:35,047 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:08:35,056 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:08:35,242 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-10-03 09:08:35,242 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:35,248 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:35,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2018-10-03 09:08:35,542 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:35,543 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-10-03 09:08:35,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-03 09:08:35,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-03 09:08:35,543 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:35,544 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand 33 states. [2018-10-03 09:08:35,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:35,766 INFO L93 Difference]: Finished difference Result 195 states and 198 transitions. [2018-10-03 09:08:35,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-03 09:08:35,767 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 126 [2018-10-03 09:08:35,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:35,767 INFO L225 Difference]: With dead ends: 195 [2018-10-03 09:08:35,767 INFO L226 Difference]: Without dead ends: 131 [2018-10-03 09:08:35,768 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.4s impTime 31 [2018-10-03 09:08:35,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-10-03 09:08:35,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-10-03 09:08:35,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-10-03 09:08:35,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 132 transitions. [2018-10-03 09:08:35,771 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 132 transitions. Word has length 126 [2018-10-03 09:08:35,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:35,771 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 132 transitions. [2018-10-03 09:08:35,771 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-03 09:08:35,771 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 132 transitions. [2018-10-03 09:08:35,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-03 09:08:35,772 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:35,772 INFO L375 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 1, 1, 1, 1] [2018-10-03 09:08:35,772 INFO L423 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:35,773 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:35,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1232122327, now seen corresponding path program 31 times [2018-10-03 09:08:35,773 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:35,773 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:35,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:35,774 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:35,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:35,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:36,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 992 trivial. 0 not checked. [2018-10-03 09:08:36,703 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:36,703 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 [2018-10-03 09:08:36,712 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:08:36,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:36,764 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:37,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 992 trivial. 0 not checked. [2018-10-03 09:08:37,024 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:37,024 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-10-03 09:08:37,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-03 09:08:37,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-03 09:08:37,025 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:37,025 INFO L87 Difference]: Start difference. First operand 131 states and 132 transitions. Second operand 34 states. [2018-10-03 09:08:38,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:38,026 INFO L93 Difference]: Finished difference Result 201 states and 204 transitions. [2018-10-03 09:08:38,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-03 09:08:38,027 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 130 [2018-10-03 09:08:38,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:38,028 INFO L225 Difference]: With dead ends: 201 [2018-10-03 09:08:38,028 INFO L226 Difference]: Without dead ends: 135 [2018-10-03 09:08:38,029 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.6s impTime 32 [2018-10-03 09:08:38,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-10-03 09:08:38,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-10-03 09:08:38,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-10-03 09:08:38,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 136 transitions. [2018-10-03 09:08:38,033 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 136 transitions. Word has length 130 [2018-10-03 09:08:38,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:38,033 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 136 transitions. [2018-10-03 09:08:38,033 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-03 09:08:38,034 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 136 transitions. [2018-10-03 09:08:38,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-03 09:08:38,034 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:38,034 INFO L375 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 1, 1, 1, 1] [2018-10-03 09:08:38,034 INFO L423 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:38,035 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:38,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1452361141, now seen corresponding path program 32 times [2018-10-03 09:08:38,035 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:38,035 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:38,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:38,036 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:08:38,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:38,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:38,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 1056 trivial. 0 not checked. [2018-10-03 09:08:38,690 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:38,690 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 [2018-10-03 09:08:38,698 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:08:38,753 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:08:38,753 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:38,756 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:38,881 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 1056 trivial. 0 not checked. [2018-10-03 09:08:38,901 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:38,902 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-10-03 09:08:38,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-03 09:08:38,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-03 09:08:38,902 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:38,903 INFO L87 Difference]: Start difference. First operand 135 states and 136 transitions. Second operand 35 states. [2018-10-03 09:08:39,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:39,037 INFO L93 Difference]: Finished difference Result 207 states and 210 transitions. [2018-10-03 09:08:39,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-03 09:08:39,039 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 134 [2018-10-03 09:08:39,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:39,040 INFO L225 Difference]: With dead ends: 207 [2018-10-03 09:08:39,040 INFO L226 Difference]: Without dead ends: 139 [2018-10-03 09:08:39,040 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.4s impTime 33 [2018-10-03 09:08:39,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-10-03 09:08:39,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-10-03 09:08:39,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-10-03 09:08:39,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 140 transitions. [2018-10-03 09:08:39,043 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 140 transitions. Word has length 134 [2018-10-03 09:08:39,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:39,044 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 140 transitions. [2018-10-03 09:08:39,044 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-03 09:08:39,044 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 140 transitions. [2018-10-03 09:08:39,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-03 09:08:39,045 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:39,045 INFO L375 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 1, 1, 1, 1] [2018-10-03 09:08:39,045 INFO L423 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:39,045 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:39,045 INFO L82 PathProgramCache]: Analyzing trace with hash 957810879, now seen corresponding path program 33 times [2018-10-03 09:08:39,046 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:39,046 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:39,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:39,046 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:39,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:39,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:39,730 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 1122 trivial. 0 not checked. [2018-10-03 09:08:39,731 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:39,731 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 [2018-10-03 09:08:39,739 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:08:40,036 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2018-10-03 09:08:40,036 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:40,040 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:40,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 1122 trivial. 0 not checked. [2018-10-03 09:08:40,408 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:40,408 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-10-03 09:08:40,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-03 09:08:40,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-03 09:08:40,409 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:40,409 INFO L87 Difference]: Start difference. First operand 139 states and 140 transitions. Second operand 36 states. [2018-10-03 09:08:40,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:40,665 INFO L93 Difference]: Finished difference Result 213 states and 216 transitions. [2018-10-03 09:08:40,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-03 09:08:40,666 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 138 [2018-10-03 09:08:40,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:40,666 INFO L225 Difference]: With dead ends: 213 [2018-10-03 09:08:40,667 INFO L226 Difference]: Without dead ends: 143 [2018-10-03 09:08:40,667 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.5s impTime 34 [2018-10-03 09:08:40,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-10-03 09:08:40,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-10-03 09:08:40,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-10-03 09:08:40,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 144 transitions. [2018-10-03 09:08:40,671 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 144 transitions. Word has length 138 [2018-10-03 09:08:40,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:40,672 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 144 transitions. [2018-10-03 09:08:40,672 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-03 09:08:40,672 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 144 transitions. [2018-10-03 09:08:40,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-03 09:08:40,672 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:40,673 INFO L375 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 1, 1, 1, 1] [2018-10-03 09:08:40,673 INFO L423 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:40,673 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:40,673 INFO L82 PathProgramCache]: Analyzing trace with hash 963550515, now seen corresponding path program 34 times [2018-10-03 09:08:40,673 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:40,674 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:40,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:40,674 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:40,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:40,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:41,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2018-10-03 09:08:41,158 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:41,159 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:08:41,167 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:08:41,229 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:08:41,230 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:41,233 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:41,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2018-10-03 09:08:41,381 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:41,381 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-10-03 09:08:41,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-03 09:08:41,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-03 09:08:41,382 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:41,382 INFO L87 Difference]: Start difference. First operand 143 states and 144 transitions. Second operand 37 states. [2018-10-03 09:08:41,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:41,642 INFO L93 Difference]: Finished difference Result 219 states and 222 transitions. [2018-10-03 09:08:41,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-03 09:08:41,642 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 142 [2018-10-03 09:08:41,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:41,643 INFO L225 Difference]: With dead ends: 219 [2018-10-03 09:08:41,643 INFO L226 Difference]: Without dead ends: 147 [2018-10-03 09:08:41,644 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 35 [2018-10-03 09:08:41,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-10-03 09:08:41,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-10-03 09:08:41,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-10-03 09:08:41,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 148 transitions. [2018-10-03 09:08:41,649 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 148 transitions. Word has length 142 [2018-10-03 09:08:41,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:41,650 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 148 transitions. [2018-10-03 09:08:41,650 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-03 09:08:41,650 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 148 transitions. [2018-10-03 09:08:41,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-03 09:08:41,651 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:41,651 INFO L375 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 1, 1, 1, 1] [2018-10-03 09:08:41,651 INFO L423 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:41,652 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:41,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1526364071, now seen corresponding path program 35 times [2018-10-03 09:08:41,652 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:41,652 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:41,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:41,665 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:41,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:41,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:42,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 1260 trivial. 0 not checked. [2018-10-03 09:08:42,570 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:42,570 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:08:42,578 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:08:43,105 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-10-03 09:08:43,105 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:43,109 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:43,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 1260 trivial. 0 not checked. [2018-10-03 09:08:43,298 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:43,298 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-10-03 09:08:43,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-03 09:08:43,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-03 09:08:43,299 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:43,299 INFO L87 Difference]: Start difference. First operand 147 states and 148 transitions. Second operand 38 states. [2018-10-03 09:08:44,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:44,465 INFO L93 Difference]: Finished difference Result 225 states and 228 transitions. [2018-10-03 09:08:44,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-03 09:08:44,466 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 146 [2018-10-03 09:08:44,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:44,467 INFO L225 Difference]: With dead ends: 225 [2018-10-03 09:08:44,467 INFO L226 Difference]: Without dead ends: 151 [2018-10-03 09:08:44,468 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.6s impTime 36 [2018-10-03 09:08:44,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-10-03 09:08:44,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-10-03 09:08:44,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-10-03 09:08:44,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2018-10-03 09:08:44,472 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 146 [2018-10-03 09:08:44,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:44,473 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2018-10-03 09:08:44,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-03 09:08:44,473 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2018-10-03 09:08:44,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-10-03 09:08:44,474 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:44,474 INFO L375 BasicCegarLoop]: trace histogram [37, 37, 36, 36, 1, 1, 1, 1] [2018-10-03 09:08:44,474 INFO L423 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:44,474 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:44,475 INFO L82 PathProgramCache]: Analyzing trace with hash 2109708315, now seen corresponding path program 36 times [2018-10-03 09:08:44,475 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:44,475 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:44,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:44,475 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:44,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:44,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:46,219 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 1332 trivial. 0 not checked. [2018-10-03 09:08:46,219 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:46,219 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:08:46,227 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:08:46,540 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-10-03 09:08:46,540 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:46,546 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:46,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 1332 trivial. 0 not checked. [2018-10-03 09:08:46,840 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:46,840 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-10-03 09:08:46,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-03 09:08:46,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-03 09:08:46,841 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:46,841 INFO L87 Difference]: Start difference. First operand 151 states and 152 transitions. Second operand 39 states. [2018-10-03 09:08:47,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:47,122 INFO L93 Difference]: Finished difference Result 231 states and 234 transitions. [2018-10-03 09:08:47,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-03 09:08:47,122 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 150 [2018-10-03 09:08:47,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:47,123 INFO L225 Difference]: With dead ends: 231 [2018-10-03 09:08:47,124 INFO L226 Difference]: Without dead ends: 155 [2018-10-03 09:08:47,124 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.3s impTime 37 [2018-10-03 09:08:47,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-10-03 09:08:47,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-10-03 09:08:47,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-10-03 09:08:47,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 156 transitions. [2018-10-03 09:08:47,128 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 156 transitions. Word has length 150 [2018-10-03 09:08:47,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:47,129 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 156 transitions. [2018-10-03 09:08:47,129 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-03 09:08:47,129 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 156 transitions. [2018-10-03 09:08:47,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-10-03 09:08:47,130 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:47,130 INFO L375 BasicCegarLoop]: trace histogram [38, 38, 37, 37, 1, 1, 1, 1] [2018-10-03 09:08:47,130 INFO L423 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:47,130 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:47,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1900215951, now seen corresponding path program 37 times [2018-10-03 09:08:47,131 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:47,131 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:47,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:47,131 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:47,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:47,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:49,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2018-10-03 09:08:49,281 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:49,281 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 [2018-10-03 09:08:49,289 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:08:49,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:49,358 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:49,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2018-10-03 09:08:49,522 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:49,522 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-10-03 09:08:49,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-03 09:08:49,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-03 09:08:49,523 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:49,523 INFO L87 Difference]: Start difference. First operand 155 states and 156 transitions. Second operand 40 states. [2018-10-03 09:08:49,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:49,697 INFO L93 Difference]: Finished difference Result 237 states and 240 transitions. [2018-10-03 09:08:49,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-03 09:08:49,698 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 154 [2018-10-03 09:08:49,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:49,699 INFO L225 Difference]: With dead ends: 237 [2018-10-03 09:08:49,699 INFO L226 Difference]: Without dead ends: 159 [2018-10-03 09:08:49,700 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.6s impTime 38 [2018-10-03 09:08:49,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-10-03 09:08:49,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-10-03 09:08:49,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-10-03 09:08:49,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 160 transitions. [2018-10-03 09:08:49,703 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 160 transitions. Word has length 154 [2018-10-03 09:08:49,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:49,703 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 160 transitions. [2018-10-03 09:08:49,703 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-03 09:08:49,703 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 160 transitions. [2018-10-03 09:08:49,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-03 09:08:49,704 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:49,704 INFO L375 BasicCegarLoop]: trace histogram [39, 39, 38, 38, 1, 1, 1, 1] [2018-10-03 09:08:49,704 INFO L423 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:49,704 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:49,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1266046205, now seen corresponding path program 38 times [2018-10-03 09:08:49,705 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:49,705 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:49,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:49,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:08:49,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:49,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:50,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 1482 trivial. 0 not checked. [2018-10-03 09:08:50,527 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:50,527 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 [2018-10-03 09:08:50,534 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:08:50,611 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:08:50,612 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:50,615 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:52,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 1482 trivial. 0 not checked. [2018-10-03 09:08:52,276 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:52,277 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-10-03 09:08:52,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-03 09:08:52,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-03 09:08:52,277 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:52,277 INFO L87 Difference]: Start difference. First operand 159 states and 160 transitions. Second operand 41 states. [2018-10-03 09:08:52,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:52,643 INFO L93 Difference]: Finished difference Result 243 states and 246 transitions. [2018-10-03 09:08:52,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-03 09:08:52,643 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 158 [2018-10-03 09:08:52,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:52,645 INFO L225 Difference]: With dead ends: 243 [2018-10-03 09:08:52,645 INFO L226 Difference]: Without dead ends: 163 [2018-10-03 09:08:52,645 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 0.5s impTime 39 [2018-10-03 09:08:52,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-10-03 09:08:52,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-10-03 09:08:52,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-10-03 09:08:52,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 164 transitions. [2018-10-03 09:08:52,652 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 164 transitions. Word has length 158 [2018-10-03 09:08:52,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:52,652 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 164 transitions. [2018-10-03 09:08:52,652 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-03 09:08:52,652 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 164 transitions. [2018-10-03 09:08:52,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-10-03 09:08:52,653 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:52,653 INFO L375 BasicCegarLoop]: trace histogram [40, 40, 39, 39, 1, 1, 1, 1] [2018-10-03 09:08:52,653 INFO L423 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:52,654 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:52,654 INFO L82 PathProgramCache]: Analyzing trace with hash 907582839, now seen corresponding path program 39 times [2018-10-03 09:08:52,654 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:52,654 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:52,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:52,655 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:52,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:52,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:53,545 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2018-10-03 09:08:53,546 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:53,546 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 [2018-10-03 09:08:53,554 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:08:54,035 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2018-10-03 09:08:54,035 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:54,040 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:54,193 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2018-10-03 09:08:54,215 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:54,215 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-10-03 09:08:54,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-03 09:08:54,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-03 09:08:54,216 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:54,216 INFO L87 Difference]: Start difference. First operand 163 states and 164 transitions. Second operand 42 states. [2018-10-03 09:08:54,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:54,459 INFO L93 Difference]: Finished difference Result 249 states and 252 transitions. [2018-10-03 09:08:54,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-03 09:08:54,459 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 162 [2018-10-03 09:08:54,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:54,461 INFO L225 Difference]: With dead ends: 249 [2018-10-03 09:08:54,461 INFO L226 Difference]: Without dead ends: 167 [2018-10-03 09:08:54,461 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.7s impTime 40 [2018-10-03 09:08:54,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-10-03 09:08:54,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-10-03 09:08:54,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-10-03 09:08:54,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 168 transitions. [2018-10-03 09:08:54,465 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 168 transitions. Word has length 162 [2018-10-03 09:08:54,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:54,465 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 168 transitions. [2018-10-03 09:08:54,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-03 09:08:54,466 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 168 transitions. [2018-10-03 09:08:54,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-10-03 09:08:54,466 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:54,466 INFO L375 BasicCegarLoop]: trace histogram [41, 41, 40, 40, 1, 1, 1, 1] [2018-10-03 09:08:54,466 INFO L423 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:54,467 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:54,467 INFO L82 PathProgramCache]: Analyzing trace with hash 334812651, now seen corresponding path program 40 times [2018-10-03 09:08:54,467 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:54,467 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:54,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:54,468 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:54,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:54,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:55,206 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 1640 trivial. 0 not checked. [2018-10-03 09:08:55,206 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:55,206 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 [2018-10-03 09:08:55,214 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:08:55,282 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:08:55,283 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:55,286 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:55,484 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 1640 trivial. 0 not checked. [2018-10-03 09:08:55,504 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:55,504 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-10-03 09:08:55,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-03 09:08:55,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-03 09:08:55,505 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:55,505 INFO L87 Difference]: Start difference. First operand 167 states and 168 transitions. Second operand 43 states. [2018-10-03 09:08:55,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:55,854 INFO L93 Difference]: Finished difference Result 255 states and 258 transitions. [2018-10-03 09:08:55,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-03 09:08:55,854 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 166 [2018-10-03 09:08:55,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:55,855 INFO L225 Difference]: With dead ends: 255 [2018-10-03 09:08:55,855 INFO L226 Difference]: Without dead ends: 171 [2018-10-03 09:08:55,855 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.5s impTime 41 [2018-10-03 09:08:55,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-10-03 09:08:55,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-10-03 09:08:55,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-10-03 09:08:55,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 172 transitions. [2018-10-03 09:08:55,859 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 172 transitions. Word has length 166 [2018-10-03 09:08:55,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:55,860 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 172 transitions. [2018-10-03 09:08:55,860 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-03 09:08:55,860 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 172 transitions. [2018-10-03 09:08:55,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-03 09:08:55,860 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:55,861 INFO L375 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 1, 1, 1, 1] [2018-10-03 09:08:55,861 INFO L423 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:55,861 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:55,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1537430623, now seen corresponding path program 41 times [2018-10-03 09:08:55,861 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:55,861 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:55,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:55,862 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:55,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:55,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:56,815 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 1722 trivial. 0 not checked. [2018-10-03 09:08:56,815 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:56,815 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 [2018-10-03 09:08:56,827 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:08:57,609 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2018-10-03 09:08:57,610 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:57,616 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:58,042 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 1722 trivial. 0 not checked. [2018-10-03 09:08:58,065 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:58,065 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-10-03 09:08:58,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-03 09:08:58,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-03 09:08:58,066 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:58,066 INFO L87 Difference]: Start difference. First operand 171 states and 172 transitions. Second operand 44 states. [2018-10-03 09:08:58,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:58,287 INFO L93 Difference]: Finished difference Result 261 states and 264 transitions. [2018-10-03 09:08:58,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-03 09:08:58,287 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 170 [2018-10-03 09:08:58,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:58,289 INFO L225 Difference]: With dead ends: 261 [2018-10-03 09:08:58,289 INFO L226 Difference]: Without dead ends: 175 [2018-10-03 09:08:58,290 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.7s impTime 42 [2018-10-03 09:08:58,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-10-03 09:08:58,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-10-03 09:08:58,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-10-03 09:08:58,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 176 transitions. [2018-10-03 09:08:58,295 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 176 transitions. Word has length 170 [2018-10-03 09:08:58,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:58,295 INFO L480 AbstractCegarLoop]: Abstraction has 175 states and 176 transitions. [2018-10-03 09:08:58,295 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-03 09:08:58,296 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 176 transitions. [2018-10-03 09:08:58,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-10-03 09:08:58,296 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:58,297 INFO L375 BasicCegarLoop]: trace histogram [43, 43, 42, 42, 1, 1, 1, 1] [2018-10-03 09:08:58,297 INFO L423 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:58,297 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:58,297 INFO L82 PathProgramCache]: Analyzing trace with hash -903276333, now seen corresponding path program 42 times [2018-10-03 09:08:58,297 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:58,297 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:58,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:58,298 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:58,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:58,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:59,042 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 1806 trivial. 0 not checked. [2018-10-03 09:08:59,042 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:59,042 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 [2018-10-03 09:08:59,057 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:08:59,516 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-10-03 09:08:59,516 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:59,522 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:59,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 1806 trivial. 0 not checked. [2018-10-03 09:08:59,717 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:59,718 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-10-03 09:08:59,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-03 09:08:59,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-03 09:08:59,719 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:59,719 INFO L87 Difference]: Start difference. First operand 175 states and 176 transitions. Second operand 45 states. [2018-10-03 09:08:59,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:59,922 INFO L93 Difference]: Finished difference Result 267 states and 270 transitions. [2018-10-03 09:08:59,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-03 09:08:59,922 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 174 [2018-10-03 09:08:59,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:59,924 INFO L225 Difference]: With dead ends: 267 [2018-10-03 09:08:59,924 INFO L226 Difference]: Without dead ends: 179 [2018-10-03 09:08:59,924 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.5s impTime 43 [2018-10-03 09:08:59,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-10-03 09:08:59,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-10-03 09:08:59,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-10-03 09:08:59,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 180 transitions. [2018-10-03 09:08:59,927 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 180 transitions. Word has length 174 [2018-10-03 09:08:59,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:59,928 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 180 transitions. [2018-10-03 09:08:59,928 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-03 09:08:59,928 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 180 transitions. [2018-10-03 09:08:59,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-03 09:08:59,928 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:59,928 INFO L375 BasicCegarLoop]: trace histogram [44, 44, 43, 43, 1, 1, 1, 1] [2018-10-03 09:08:59,929 INFO L423 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:59,929 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:59,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1945427129, now seen corresponding path program 43 times [2018-10-03 09:08:59,929 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:59,929 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:59,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:59,930 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:59,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:59,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:00,667 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 1892 trivial. 0 not checked. [2018-10-03 09:09:00,668 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:00,668 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 [2018-10-03 09:09:00,676 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:09:00,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:00,755 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:01,061 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 1892 trivial. 0 not checked. [2018-10-03 09:09:01,081 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:01,082 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-10-03 09:09:01,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-03 09:09:01,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-03 09:09:01,083 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:01,083 INFO L87 Difference]: Start difference. First operand 179 states and 180 transitions. Second operand 46 states. [2018-10-03 09:09:01,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:01,300 INFO L93 Difference]: Finished difference Result 273 states and 276 transitions. [2018-10-03 09:09:01,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-03 09:09:01,301 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 178 [2018-10-03 09:09:01,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:01,303 INFO L225 Difference]: With dead ends: 273 [2018-10-03 09:09:01,303 INFO L226 Difference]: Without dead ends: 183 [2018-10-03 09:09:01,304 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.5s impTime 44 [2018-10-03 09:09:01,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-10-03 09:09:01,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-10-03 09:09:01,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-10-03 09:09:01,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 184 transitions. [2018-10-03 09:09:01,308 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 184 transitions. Word has length 178 [2018-10-03 09:09:01,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:01,308 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 184 transitions. [2018-10-03 09:09:01,308 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-03 09:09:01,308 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 184 transitions. [2018-10-03 09:09:01,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-10-03 09:09:01,309 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:01,309 INFO L375 BasicCegarLoop]: trace histogram [45, 45, 44, 44, 1, 1, 1, 1] [2018-10-03 09:09:01,309 INFO L423 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:01,309 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:01,310 INFO L82 PathProgramCache]: Analyzing trace with hash -45190213, now seen corresponding path program 44 times [2018-10-03 09:09:01,310 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:01,310 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:01,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:01,310 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:09:01,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:01,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:02,182 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 1980 trivial. 0 not checked. [2018-10-03 09:09:02,182 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:02,183 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 [2018-10-03 09:09:02,191 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:09:02,271 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:09:02,271 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:02,274 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:02,471 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 1980 trivial. 0 not checked. [2018-10-03 09:09:02,491 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:02,491 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-10-03 09:09:02,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-03 09:09:02,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-03 09:09:02,492 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:02,492 INFO L87 Difference]: Start difference. First operand 183 states and 184 transitions. Second operand 47 states. [2018-10-03 09:09:02,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:02,707 INFO L93 Difference]: Finished difference Result 279 states and 282 transitions. [2018-10-03 09:09:02,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-03 09:09:02,708 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 182 [2018-10-03 09:09:02,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:02,709 INFO L225 Difference]: With dead ends: 279 [2018-10-03 09:09:02,709 INFO L226 Difference]: Without dead ends: 187 [2018-10-03 09:09:02,709 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 45 [2018-10-03 09:09:02,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-10-03 09:09:02,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-10-03 09:09:02,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-10-03 09:09:02,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 188 transitions. [2018-10-03 09:09:02,713 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 188 transitions. Word has length 182 [2018-10-03 09:09:02,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:02,714 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 188 transitions. [2018-10-03 09:09:02,714 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-03 09:09:02,714 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 188 transitions. [2018-10-03 09:09:02,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-03 09:09:02,715 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:02,715 INFO L375 BasicCegarLoop]: trace histogram [46, 46, 45, 45, 1, 1, 1, 1] [2018-10-03 09:09:02,715 INFO L423 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:02,715 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:02,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1769474607, now seen corresponding path program 45 times [2018-10-03 09:09:02,716 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:02,716 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:02,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:02,717 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:02,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:02,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:03,447 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 2070 trivial. 0 not checked. [2018-10-03 09:09:03,448 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:03,448 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 [2018-10-03 09:09:03,456 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:09:04,371 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2018-10-03 09:09:04,371 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:04,377 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:04,684 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 2070 trivial. 0 not checked. [2018-10-03 09:09:04,706 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:04,706 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-10-03 09:09:04,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-03 09:09:04,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-03 09:09:04,707 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:04,707 INFO L87 Difference]: Start difference. First operand 187 states and 188 transitions. Second operand 48 states. [2018-10-03 09:09:04,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:04,916 INFO L93 Difference]: Finished difference Result 285 states and 288 transitions. [2018-10-03 09:09:04,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-03 09:09:04,916 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 186 [2018-10-03 09:09:04,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:04,921 INFO L225 Difference]: With dead ends: 285 [2018-10-03 09:09:04,921 INFO L226 Difference]: Without dead ends: 191 [2018-10-03 09:09:04,922 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.5s impTime 46 [2018-10-03 09:09:04,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-10-03 09:09:04,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-10-03 09:09:04,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-10-03 09:09:04,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 192 transitions. [2018-10-03 09:09:04,926 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 192 transitions. Word has length 186 [2018-10-03 09:09:04,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:04,927 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 192 transitions. [2018-10-03 09:09:04,927 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-03 09:09:04,927 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 192 transitions. [2018-10-03 09:09:04,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-10-03 09:09:04,928 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:04,928 INFO L375 BasicCegarLoop]: trace histogram [47, 47, 46, 46, 1, 1, 1, 1] [2018-10-03 09:09:04,928 INFO L423 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:04,928 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:04,929 INFO L82 PathProgramCache]: Analyzing trace with hash -879958365, now seen corresponding path program 46 times [2018-10-03 09:09:04,929 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:04,929 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:04,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:04,930 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:04,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:04,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:06,569 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 2162 trivial. 0 not checked. [2018-10-03 09:09:06,569 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:06,569 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 [2018-10-03 09:09:06,579 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:09:06,661 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:09:06,661 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:06,665 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:06,876 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 2162 trivial. 0 not checked. [2018-10-03 09:09:06,896 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:06,896 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-10-03 09:09:06,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-03 09:09:06,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-03 09:09:06,897 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:06,897 INFO L87 Difference]: Start difference. First operand 191 states and 192 transitions. Second operand 49 states. [2018-10-03 09:09:07,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:07,123 INFO L93 Difference]: Finished difference Result 291 states and 294 transitions. [2018-10-03 09:09:07,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-03 09:09:07,123 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 190 [2018-10-03 09:09:07,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:07,124 INFO L225 Difference]: With dead ends: 291 [2018-10-03 09:09:07,124 INFO L226 Difference]: Without dead ends: 195 [2018-10-03 09:09:07,125 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.2s impTime 47 [2018-10-03 09:09:07,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-10-03 09:09:07,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-10-03 09:09:07,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-10-03 09:09:07,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 196 transitions. [2018-10-03 09:09:07,129 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 196 transitions. Word has length 190 [2018-10-03 09:09:07,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:07,129 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 196 transitions. [2018-10-03 09:09:07,130 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-03 09:09:07,130 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 196 transitions. [2018-10-03 09:09:07,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-10-03 09:09:07,131 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:07,131 INFO L375 BasicCegarLoop]: trace histogram [48, 48, 47, 47, 1, 1, 1, 1] [2018-10-03 09:09:07,131 INFO L423 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:07,131 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:07,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1911420649, now seen corresponding path program 47 times [2018-10-03 09:09:07,131 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:07,132 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:07,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:07,132 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:07,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:07,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:08,438 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 2256 trivial. 0 not checked. [2018-10-03 09:09:08,439 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:08,439 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 [2018-10-03 09:09:08,447 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:09:09,539 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2018-10-03 09:09:09,539 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:09,546 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:09,803 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 2256 trivial. 0 not checked. [2018-10-03 09:09:09,825 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:09,826 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-10-03 09:09:09,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-03 09:09:09,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-03 09:09:09,826 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:09,827 INFO L87 Difference]: Start difference. First operand 195 states and 196 transitions. Second operand 50 states. [2018-10-03 09:09:10,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:10,103 INFO L93 Difference]: Finished difference Result 297 states and 300 transitions. [2018-10-03 09:09:10,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-03 09:09:10,104 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 194 [2018-10-03 09:09:10,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:10,105 INFO L225 Difference]: With dead ends: 297 [2018-10-03 09:09:10,105 INFO L226 Difference]: Without dead ends: 199 [2018-10-03 09:09:10,106 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.0s impTime 48 [2018-10-03 09:09:10,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-10-03 09:09:10,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-10-03 09:09:10,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-10-03 09:09:10,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 200 transitions. [2018-10-03 09:09:10,110 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 200 transitions. Word has length 194 [2018-10-03 09:09:10,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:10,111 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 200 transitions. [2018-10-03 09:09:10,111 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-03 09:09:10,111 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 200 transitions. [2018-10-03 09:09:10,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-03 09:09:10,112 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:10,112 INFO L375 BasicCegarLoop]: trace histogram [49, 49, 48, 48, 1, 1, 1, 1] [2018-10-03 09:09:10,112 INFO L423 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:10,112 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:10,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1259106699, now seen corresponding path program 48 times [2018-10-03 09:09:10,112 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:10,113 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:10,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:10,113 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:10,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:10,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:11,564 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 2352 trivial. 0 not checked. [2018-10-03 09:09:11,564 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:11,565 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 [2018-10-03 09:09:11,572 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:09:12,326 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-10-03 09:09:12,326 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:12,336 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:12,527 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 2352 trivial. 0 not checked. [2018-10-03 09:09:12,551 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:12,551 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-10-03 09:09:12,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-03 09:09:12,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-03 09:09:12,552 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:12,552 INFO L87 Difference]: Start difference. First operand 199 states and 200 transitions. Second operand 51 states. [2018-10-03 09:09:12,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:12,822 INFO L93 Difference]: Finished difference Result 303 states and 306 transitions. [2018-10-03 09:09:12,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-03 09:09:12,822 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 198 [2018-10-03 09:09:12,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:12,823 INFO L225 Difference]: With dead ends: 303 [2018-10-03 09:09:12,824 INFO L226 Difference]: Without dead ends: 203 [2018-10-03 09:09:12,825 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.2s impTime 49 [2018-10-03 09:09:12,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-10-03 09:09:12,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-10-03 09:09:12,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-10-03 09:09:12,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 204 transitions. [2018-10-03 09:09:12,831 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 204 transitions. Word has length 198 [2018-10-03 09:09:12,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:12,831 INFO L480 AbstractCegarLoop]: Abstraction has 203 states and 204 transitions. [2018-10-03 09:09:12,831 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-03 09:09:12,831 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 204 transitions. [2018-10-03 09:09:12,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-10-03 09:09:12,832 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:12,832 INFO L375 BasicCegarLoop]: trace histogram [50, 50, 49, 49, 1, 1, 1, 1] [2018-10-03 09:09:12,833 INFO L423 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:12,833 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:12,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1946083329, now seen corresponding path program 49 times [2018-10-03 09:09:12,833 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:12,833 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:12,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:12,834 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:12,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:12,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:13,717 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2018-10-03 09:09:13,717 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:13,717 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 [2018-10-03 09:09:13,726 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:09:13,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:13,813 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:13,993 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2018-10-03 09:09:14,013 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:14,013 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-10-03 09:09:14,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-03 09:09:14,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-03 09:09:14,014 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:14,014 INFO L87 Difference]: Start difference. First operand 203 states and 204 transitions. Second operand 52 states. [2018-10-03 09:09:14,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:14,287 INFO L93 Difference]: Finished difference Result 309 states and 312 transitions. [2018-10-03 09:09:14,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-03 09:09:14,287 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 202 [2018-10-03 09:09:14,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:14,289 INFO L225 Difference]: With dead ends: 309 [2018-10-03 09:09:14,289 INFO L226 Difference]: Without dead ends: 207 [2018-10-03 09:09:14,289 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.6s impTime 50 [2018-10-03 09:09:14,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-10-03 09:09:14,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-10-03 09:09:14,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-10-03 09:09:14,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 208 transitions. [2018-10-03 09:09:14,294 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 208 transitions. Word has length 202 [2018-10-03 09:09:14,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:14,294 INFO L480 AbstractCegarLoop]: Abstraction has 207 states and 208 transitions. [2018-10-03 09:09:14,294 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-03 09:09:14,294 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 208 transitions. [2018-10-03 09:09:14,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-10-03 09:09:14,295 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:14,296 INFO L375 BasicCegarLoop]: trace histogram [51, 51, 50, 50, 1, 1, 1, 1] [2018-10-03 09:09:14,296 INFO L423 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:14,296 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:14,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1980427149, now seen corresponding path program 50 times [2018-10-03 09:09:14,296 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:14,296 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:14,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:14,297 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:09:14,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:14,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:15,221 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 2550 trivial. 0 not checked. [2018-10-03 09:09:15,221 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:15,221 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 [2018-10-03 09:09:15,229 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:09:15,307 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:09:15,308 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:15,311 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:15,502 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 2550 trivial. 0 not checked. [2018-10-03 09:09:15,522 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:15,522 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-10-03 09:09:15,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-03 09:09:15,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-03 09:09:15,523 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:15,523 INFO L87 Difference]: Start difference. First operand 207 states and 208 transitions. Second operand 53 states. [2018-10-03 09:09:16,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:16,398 INFO L93 Difference]: Finished difference Result 315 states and 318 transitions. [2018-10-03 09:09:16,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-03 09:09:16,398 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 206 [2018-10-03 09:09:16,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:16,399 INFO L225 Difference]: With dead ends: 315 [2018-10-03 09:09:16,400 INFO L226 Difference]: Without dead ends: 211 [2018-10-03 09:09:16,400 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.7s impTime 51 [2018-10-03 09:09:16,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-10-03 09:09:16,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-10-03 09:09:16,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-10-03 09:09:16,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 212 transitions. [2018-10-03 09:09:16,406 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 212 transitions. Word has length 206 [2018-10-03 09:09:16,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:16,406 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 212 transitions. [2018-10-03 09:09:16,406 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-03 09:09:16,406 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 212 transitions. [2018-10-03 09:09:16,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-10-03 09:09:16,409 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:16,409 INFO L375 BasicCegarLoop]: trace histogram [52, 52, 51, 51, 1, 1, 1, 1] [2018-10-03 09:09:16,410 INFO L423 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:16,410 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:16,410 INFO L82 PathProgramCache]: Analyzing trace with hash -311603481, now seen corresponding path program 51 times [2018-10-03 09:09:16,410 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:16,410 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:16,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:16,411 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:16,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:16,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:17,256 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 2652 trivial. 0 not checked. [2018-10-03 09:09:17,257 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:17,257 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 [2018-10-03 09:09:17,265 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:09:18,427 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2018-10-03 09:09:18,427 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:18,433 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:19,624 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 2652 trivial. 0 not checked. [2018-10-03 09:09:19,662 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:19,662 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-10-03 09:09:19,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-03 09:09:19,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-03 09:09:19,663 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:19,663 INFO L87 Difference]: Start difference. First operand 211 states and 212 transitions. Second operand 54 states. [2018-10-03 09:09:20,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:20,017 INFO L93 Difference]: Finished difference Result 321 states and 324 transitions. [2018-10-03 09:09:20,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-03 09:09:20,017 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 210 [2018-10-03 09:09:20,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:20,019 INFO L225 Difference]: With dead ends: 321 [2018-10-03 09:09:20,019 INFO L226 Difference]: Without dead ends: 215 [2018-10-03 09:09:20,020 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 0.6s impTime 52 [2018-10-03 09:09:20,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-10-03 09:09:20,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-10-03 09:09:20,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-10-03 09:09:20,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 216 transitions. [2018-10-03 09:09:20,025 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 216 transitions. Word has length 210 [2018-10-03 09:09:20,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:20,025 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 216 transitions. [2018-10-03 09:09:20,025 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-03 09:09:20,025 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 216 transitions. [2018-10-03 09:09:20,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-10-03 09:09:20,027 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:20,027 INFO L375 BasicCegarLoop]: trace histogram [53, 53, 52, 52, 1, 1, 1, 1] [2018-10-03 09:09:20,027 INFO L423 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:20,027 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:20,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1905340581, now seen corresponding path program 52 times [2018-10-03 09:09:20,027 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:20,028 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:20,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:20,028 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:20,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:20,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:21,240 INFO L134 CoverageAnalysis]: Checked inductivity of 5512 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 2756 trivial. 0 not checked. [2018-10-03 09:09:21,241 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:21,241 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 [2018-10-03 09:09:21,248 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:09:21,329 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:09:21,330 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:21,333 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:21,705 INFO L134 CoverageAnalysis]: Checked inductivity of 5512 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 2756 trivial. 0 not checked. [2018-10-03 09:09:21,726 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:21,726 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-10-03 09:09:21,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-03 09:09:21,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-03 09:09:21,727 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:21,727 INFO L87 Difference]: Start difference. First operand 215 states and 216 transitions. Second operand 55 states. [2018-10-03 09:09:22,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:22,063 INFO L93 Difference]: Finished difference Result 327 states and 330 transitions. [2018-10-03 09:09:22,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-03 09:09:22,064 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 214 [2018-10-03 09:09:22,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:22,065 INFO L225 Difference]: With dead ends: 327 [2018-10-03 09:09:22,066 INFO L226 Difference]: Without dead ends: 219 [2018-10-03 09:09:22,066 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.0s impTime 53 [2018-10-03 09:09:22,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-10-03 09:09:22,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-10-03 09:09:22,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-10-03 09:09:22,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 220 transitions. [2018-10-03 09:09:22,071 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 220 transitions. Word has length 214 [2018-10-03 09:09:22,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:22,071 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 220 transitions. [2018-10-03 09:09:22,071 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-03 09:09:22,071 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 220 transitions. [2018-10-03 09:09:22,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-10-03 09:09:22,072 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:22,072 INFO L375 BasicCegarLoop]: trace histogram [54, 54, 53, 53, 1, 1, 1, 1] [2018-10-03 09:09:22,072 INFO L423 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:22,072 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:22,073 INFO L82 PathProgramCache]: Analyzing trace with hash 880711119, now seen corresponding path program 53 times [2018-10-03 09:09:22,073 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:22,073 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:22,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:22,073 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:22,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:22,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:23,546 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 2862 trivial. 0 not checked. [2018-10-03 09:09:23,546 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:23,546 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 [2018-10-03 09:09:23,555 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:09:25,361 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2018-10-03 09:09:25,361 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:25,368 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:25,608 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 2862 trivial. 0 not checked. [2018-10-03 09:09:25,633 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:25,633 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-10-03 09:09:25,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-03 09:09:25,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-03 09:09:25,634 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:25,634 INFO L87 Difference]: Start difference. First operand 219 states and 220 transitions. Second operand 56 states. [2018-10-03 09:09:25,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:25,963 INFO L93 Difference]: Finished difference Result 333 states and 336 transitions. [2018-10-03 09:09:25,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-03 09:09:25,963 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 218 [2018-10-03 09:09:25,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:25,964 INFO L225 Difference]: With dead ends: 333 [2018-10-03 09:09:25,965 INFO L226 Difference]: Without dead ends: 223 [2018-10-03 09:09:25,965 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.2s impTime 54 [2018-10-03 09:09:25,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-10-03 09:09:25,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-10-03 09:09:25,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-10-03 09:09:25,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 224 transitions. [2018-10-03 09:09:25,969 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 224 transitions. Word has length 218 [2018-10-03 09:09:25,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:25,970 INFO L480 AbstractCegarLoop]: Abstraction has 223 states and 224 transitions. [2018-10-03 09:09:25,970 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-03 09:09:25,970 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 224 transitions. [2018-10-03 09:09:25,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-10-03 09:09:25,970 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:25,971 INFO L375 BasicCegarLoop]: trace histogram [55, 55, 54, 54, 1, 1, 1, 1] [2018-10-03 09:09:25,971 INFO L423 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:25,971 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:25,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1453433411, now seen corresponding path program 54 times [2018-10-03 09:09:25,971 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:25,971 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:25,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:25,972 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:25,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:25,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:27,111 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 2970 trivial. 0 not checked. [2018-10-03 09:09:27,112 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:27,112 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:09:27,119 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:09:28,011 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2018-10-03 09:09:28,012 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:28,018 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:28,261 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 2970 trivial. 0 not checked. [2018-10-03 09:09:28,284 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:28,284 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2018-10-03 09:09:28,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-03 09:09:28,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-03 09:09:28,285 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:28,285 INFO L87 Difference]: Start difference. First operand 223 states and 224 transitions. Second operand 57 states. [2018-10-03 09:09:28,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:28,682 INFO L93 Difference]: Finished difference Result 339 states and 342 transitions. [2018-10-03 09:09:28,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-03 09:09:28,682 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 222 [2018-10-03 09:09:28,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:28,683 INFO L225 Difference]: With dead ends: 339 [2018-10-03 09:09:28,683 INFO L226 Difference]: Without dead ends: 227 [2018-10-03 09:09:28,684 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.9s impTime 55 [2018-10-03 09:09:28,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-10-03 09:09:28,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-10-03 09:09:28,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-10-03 09:09:28,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 228 transitions. [2018-10-03 09:09:28,692 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 228 transitions. Word has length 222 [2018-10-03 09:09:28,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:28,693 INFO L480 AbstractCegarLoop]: Abstraction has 227 states and 228 transitions. [2018-10-03 09:09:28,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-03 09:09:28,693 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 228 transitions. [2018-10-03 09:09:28,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-10-03 09:09:28,694 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:28,694 INFO L375 BasicCegarLoop]: trace histogram [56, 56, 55, 55, 1, 1, 1, 1] [2018-10-03 09:09:28,695 INFO L423 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:28,695 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:28,695 INFO L82 PathProgramCache]: Analyzing trace with hash -614665033, now seen corresponding path program 55 times [2018-10-03 09:09:28,695 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:28,695 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:28,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:28,696 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:28,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:28,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:29,855 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 3080 trivial. 0 not checked. [2018-10-03 09:09:29,856 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:29,856 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 [2018-10-03 09:09:29,864 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:09:29,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:29,955 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:30,207 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 3080 trivial. 0 not checked. [2018-10-03 09:09:30,227 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:30,227 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-10-03 09:09:30,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-03 09:09:30,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-03 09:09:30,228 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:30,228 INFO L87 Difference]: Start difference. First operand 227 states and 228 transitions. Second operand 58 states. [2018-10-03 09:09:30,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:30,568 INFO L93 Difference]: Finished difference Result 345 states and 348 transitions. [2018-10-03 09:09:30,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-03 09:09:30,568 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 226 [2018-10-03 09:09:30,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:30,570 INFO L225 Difference]: With dead ends: 345 [2018-10-03 09:09:30,570 INFO L226 Difference]: Without dead ends: 231 [2018-10-03 09:09:30,570 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.9s impTime 56 [2018-10-03 09:09:30,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-10-03 09:09:30,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2018-10-03 09:09:30,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-10-03 09:09:30,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 232 transitions. [2018-10-03 09:09:30,576 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 232 transitions. Word has length 226 [2018-10-03 09:09:30,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:30,576 INFO L480 AbstractCegarLoop]: Abstraction has 231 states and 232 transitions. [2018-10-03 09:09:30,576 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-03 09:09:30,576 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 232 transitions. [2018-10-03 09:09:30,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-10-03 09:09:30,577 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:30,578 INFO L375 BasicCegarLoop]: trace histogram [57, 57, 56, 56, 1, 1, 1, 1] [2018-10-03 09:09:30,578 INFO L423 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:30,578 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:30,578 INFO L82 PathProgramCache]: Analyzing trace with hash -659190485, now seen corresponding path program 56 times [2018-10-03 09:09:30,578 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:30,578 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:30,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:30,579 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:09:30,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:30,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:32,084 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 3192 trivial. 0 not checked. [2018-10-03 09:09:32,084 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:32,084 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 [2018-10-03 09:09:32,091 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:09:32,194 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:09:32,194 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:32,198 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:32,562 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 3192 trivial. 0 not checked. [2018-10-03 09:09:32,584 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:32,584 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-10-03 09:09:32,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-03 09:09:32,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-03 09:09:32,585 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:32,585 INFO L87 Difference]: Start difference. First operand 231 states and 232 transitions. Second operand 59 states. [2018-10-03 09:09:32,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:32,980 INFO L93 Difference]: Finished difference Result 351 states and 354 transitions. [2018-10-03 09:09:32,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-03 09:09:32,980 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 230 [2018-10-03 09:09:32,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:32,982 INFO L225 Difference]: With dead ends: 351 [2018-10-03 09:09:32,982 INFO L226 Difference]: Without dead ends: 235 [2018-10-03 09:09:32,982 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.2s impTime 57 [2018-10-03 09:09:32,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-10-03 09:09:32,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-10-03 09:09:32,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-10-03 09:09:32,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 236 transitions. [2018-10-03 09:09:32,986 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 236 transitions. Word has length 230 [2018-10-03 09:09:32,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:32,987 INFO L480 AbstractCegarLoop]: Abstraction has 235 states and 236 transitions. [2018-10-03 09:09:32,987 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-03 09:09:32,987 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 236 transitions. [2018-10-03 09:09:32,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-10-03 09:09:32,988 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:32,988 INFO L375 BasicCegarLoop]: trace histogram [58, 58, 57, 57, 1, 1, 1, 1] [2018-10-03 09:09:32,988 INFO L423 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:32,988 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:32,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1412459423, now seen corresponding path program 57 times [2018-10-03 09:09:32,988 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:32,988 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:32,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:32,989 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:32,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:33,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:34,339 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 3306 trivial. 0 not checked. [2018-10-03 09:09:34,339 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:34,339 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:09:34,349 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:09:36,112 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2018-10-03 09:09:36,112 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:36,118 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:36,350 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 3306 trivial. 0 not checked. [2018-10-03 09:09:36,373 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:36,374 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-10-03 09:09:36,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-03 09:09:36,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-03 09:09:36,375 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:36,375 INFO L87 Difference]: Start difference. First operand 235 states and 236 transitions. Second operand 60 states. [2018-10-03 09:09:36,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:36,865 INFO L93 Difference]: Finished difference Result 357 states and 360 transitions. [2018-10-03 09:09:36,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-03 09:09:36,866 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 234 [2018-10-03 09:09:36,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:36,867 INFO L225 Difference]: With dead ends: 357 [2018-10-03 09:09:36,867 INFO L226 Difference]: Without dead ends: 239 [2018-10-03 09:09:36,867 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.1s impTime 58 [2018-10-03 09:09:36,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-10-03 09:09:36,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2018-10-03 09:09:36,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-10-03 09:09:36,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 240 transitions. [2018-10-03 09:09:36,871 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 240 transitions. Word has length 234 [2018-10-03 09:09:36,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:36,872 INFO L480 AbstractCegarLoop]: Abstraction has 239 states and 240 transitions. [2018-10-03 09:09:36,872 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-03 09:09:36,872 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 240 transitions. [2018-10-03 09:09:36,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-10-03 09:09:36,872 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:36,873 INFO L375 BasicCegarLoop]: trace histogram [59, 59, 58, 58, 1, 1, 1, 1] [2018-10-03 09:09:36,873 INFO L423 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:36,873 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:36,873 INFO L82 PathProgramCache]: Analyzing trace with hash 47353875, now seen corresponding path program 58 times [2018-10-03 09:09:36,873 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:36,873 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:36,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:36,874 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:36,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:36,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:37,665 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 3422 trivial. 0 not checked. [2018-10-03 09:09:37,666 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:37,666 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 [2018-10-03 09:09:37,676 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:09:37,772 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:09:37,773 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:37,776 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:38,012 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 3422 trivial. 0 not checked. [2018-10-03 09:09:38,033 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:38,033 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-10-03 09:09:38,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-10-03 09:09:38,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-10-03 09:09:38,034 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:38,034 INFO L87 Difference]: Start difference. First operand 239 states and 240 transitions. Second operand 61 states. [2018-10-03 09:09:38,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:38,446 INFO L93 Difference]: Finished difference Result 363 states and 366 transitions. [2018-10-03 09:09:38,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-03 09:09:38,447 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 238 [2018-10-03 09:09:38,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:38,448 INFO L225 Difference]: With dead ends: 363 [2018-10-03 09:09:38,449 INFO L226 Difference]: Without dead ends: 243 [2018-10-03 09:09:38,449 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.5s impTime 59 [2018-10-03 09:09:38,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-10-03 09:09:38,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2018-10-03 09:09:38,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-10-03 09:09:38,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 244 transitions. [2018-10-03 09:09:38,453 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 244 transitions. Word has length 238 [2018-10-03 09:09:38,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:38,453 INFO L480 AbstractCegarLoop]: Abstraction has 243 states and 244 transitions. [2018-10-03 09:09:38,453 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-10-03 09:09:38,453 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 244 transitions. [2018-10-03 09:09:38,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-10-03 09:09:38,454 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:38,455 INFO L375 BasicCegarLoop]: trace histogram [60, 60, 59, 59, 1, 1, 1, 1] [2018-10-03 09:09:38,455 INFO L423 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:38,455 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:38,455 INFO L82 PathProgramCache]: Analyzing trace with hash 153156231, now seen corresponding path program 59 times [2018-10-03 09:09:38,455 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:38,456 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:38,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:38,456 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:38,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:38,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:39,268 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 3540 trivial. 0 not checked. [2018-10-03 09:09:39,268 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:39,268 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:09:39,276 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:09:41,995 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2018-10-03 09:09:41,995 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:42,003 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:42,340 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 3540 trivial. 0 not checked. [2018-10-03 09:09:42,365 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:42,365 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-10-03 09:09:42,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-03 09:09:42,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-03 09:09:42,366 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:42,366 INFO L87 Difference]: Start difference. First operand 243 states and 244 transitions. Second operand 62 states. [2018-10-03 09:09:42,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:42,784 INFO L93 Difference]: Finished difference Result 369 states and 372 transitions. [2018-10-03 09:09:42,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-03 09:09:42,784 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 242 [2018-10-03 09:09:42,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:42,785 INFO L225 Difference]: With dead ends: 369 [2018-10-03 09:09:42,785 INFO L226 Difference]: Without dead ends: 247 [2018-10-03 09:09:42,786 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.5s impTime 60 [2018-10-03 09:09:42,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-10-03 09:09:42,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2018-10-03 09:09:42,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-10-03 09:09:42,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 248 transitions. [2018-10-03 09:09:42,791 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 248 transitions. Word has length 242 [2018-10-03 09:09:42,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:42,791 INFO L480 AbstractCegarLoop]: Abstraction has 247 states and 248 transitions. [2018-10-03 09:09:42,791 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-03 09:09:42,792 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 248 transitions. [2018-10-03 09:09:42,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-10-03 09:09:42,793 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:42,793 INFO L375 BasicCegarLoop]: trace histogram [61, 61, 60, 60, 1, 1, 1, 1] [2018-10-03 09:09:42,793 INFO L423 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:42,793 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:42,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1155486981, now seen corresponding path program 60 times [2018-10-03 09:09:42,794 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:42,794 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:42,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:42,794 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:42,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:42,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:43,482 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 3660 trivial. 0 not checked. [2018-10-03 09:09:43,482 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:43,482 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 [2018-10-03 09:09:43,490 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:09:45,021 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2018-10-03 09:09:45,022 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:45,032 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:45,359 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 3660 trivial. 0 not checked. [2018-10-03 09:09:45,383 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:45,384 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2018-10-03 09:09:45,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-03 09:09:45,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-03 09:09:45,385 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:45,385 INFO L87 Difference]: Start difference. First operand 247 states and 248 transitions. Second operand 63 states. [2018-10-03 09:09:45,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:45,761 INFO L93 Difference]: Finished difference Result 375 states and 378 transitions. [2018-10-03 09:09:45,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-03 09:09:45,761 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 246 [2018-10-03 09:09:45,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:45,763 INFO L225 Difference]: With dead ends: 375 [2018-10-03 09:09:45,763 INFO L226 Difference]: Without dead ends: 251 [2018-10-03 09:09:45,764 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.4s impTime 61 [2018-10-03 09:09:45,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-10-03 09:09:45,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2018-10-03 09:09:45,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-10-03 09:09:45,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 252 transitions. [2018-10-03 09:09:45,768 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 252 transitions. Word has length 246 [2018-10-03 09:09:45,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:45,768 INFO L480 AbstractCegarLoop]: Abstraction has 251 states and 252 transitions. [2018-10-03 09:09:45,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-03 09:09:45,768 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 252 transitions. [2018-10-03 09:09:45,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-10-03 09:09:45,769 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:45,769 INFO L375 BasicCegarLoop]: trace histogram [62, 62, 61, 61, 1, 1, 1, 1] [2018-10-03 09:09:45,770 INFO L423 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:45,770 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:45,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1549181295, now seen corresponding path program 61 times [2018-10-03 09:09:45,770 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:45,770 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:45,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:45,771 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:45,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:45,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:46,904 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 3782 trivial. 0 not checked. [2018-10-03 09:09:46,904 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:46,904 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:09:46,912 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:09:47,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:47,018 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:47,402 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 3782 trivial. 0 not checked. [2018-10-03 09:09:47,422 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:47,423 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-10-03 09:09:47,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-03 09:09:47,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-03 09:09:47,424 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:47,424 INFO L87 Difference]: Start difference. First operand 251 states and 252 transitions. Second operand 64 states. [2018-10-03 09:09:47,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:47,998 INFO L93 Difference]: Finished difference Result 381 states and 384 transitions. [2018-10-03 09:09:47,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-03 09:09:47,998 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 250 [2018-10-03 09:09:47,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:48,000 INFO L225 Difference]: With dead ends: 381 [2018-10-03 09:09:48,000 INFO L226 Difference]: Without dead ends: 255 [2018-10-03 09:09:48,000 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.8s impTime 62 [2018-10-03 09:09:48,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-10-03 09:09:48,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2018-10-03 09:09:48,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-10-03 09:09:48,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 256 transitions. [2018-10-03 09:09:48,005 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 256 transitions. Word has length 250 [2018-10-03 09:09:48,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:48,005 INFO L480 AbstractCegarLoop]: Abstraction has 255 states and 256 transitions. [2018-10-03 09:09:48,005 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-03 09:09:48,005 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 256 transitions. [2018-10-03 09:09:48,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-10-03 09:09:48,006 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:48,006 INFO L375 BasicCegarLoop]: trace histogram [63, 63, 62, 62, 1, 1, 1, 1] [2018-10-03 09:09:48,006 INFO L423 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:48,006 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:48,006 INFO L82 PathProgramCache]: Analyzing trace with hash -540549661, now seen corresponding path program 62 times [2018-10-03 09:09:48,006 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:48,007 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:48,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:48,007 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:09:48,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:48,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:48,698 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 3906 trivial. 0 not checked. [2018-10-03 09:09:48,698 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:48,698 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:09:48,706 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:09:48,808 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:09:48,808 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:48,812 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:49,079 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 3906 trivial. 0 not checked. [2018-10-03 09:09:49,099 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:49,099 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-10-03 09:09:49,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-03 09:09:49,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-03 09:09:49,100 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:49,100 INFO L87 Difference]: Start difference. First operand 255 states and 256 transitions. Second operand 65 states. [2018-10-03 09:09:49,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:49,510 INFO L93 Difference]: Finished difference Result 387 states and 390 transitions. [2018-10-03 09:09:49,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-03 09:09:49,510 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 254 [2018-10-03 09:09:49,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:49,512 INFO L225 Difference]: With dead ends: 387 [2018-10-03 09:09:49,512 INFO L226 Difference]: Without dead ends: 259 [2018-10-03 09:09:49,512 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.4s impTime 63 [2018-10-03 09:09:49,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-10-03 09:09:49,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2018-10-03 09:09:49,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-10-03 09:09:49,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 260 transitions. [2018-10-03 09:09:49,516 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 260 transitions. Word has length 254 [2018-10-03 09:09:49,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:49,516 INFO L480 AbstractCegarLoop]: Abstraction has 259 states and 260 transitions. [2018-10-03 09:09:49,516 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-03 09:09:49,516 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 260 transitions. [2018-10-03 09:09:49,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-10-03 09:09:49,517 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:49,517 INFO L375 BasicCegarLoop]: trace histogram [64, 64, 63, 63, 1, 1, 1, 1] [2018-10-03 09:09:49,517 INFO L423 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:49,518 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:49,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1476829097, now seen corresponding path program 63 times [2018-10-03 09:09:49,518 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:49,518 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:49,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:49,519 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:49,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:49,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:50,217 INFO L134 CoverageAnalysis]: Checked inductivity of 8064 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 4032 trivial. 0 not checked. [2018-10-03 09:09:50,218 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:50,218 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 [2018-10-03 09:09:50,227 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:09:52,673 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2018-10-03 09:09:52,674 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:52,679 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:52,921 INFO L134 CoverageAnalysis]: Checked inductivity of 8064 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 4032 trivial. 0 not checked. [2018-10-03 09:09:52,944 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:52,944 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-10-03 09:09:52,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-03 09:09:52,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-03 09:09:52,946 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:52,946 INFO L87 Difference]: Start difference. First operand 259 states and 260 transitions. Second operand 66 states. [2018-10-03 09:09:53,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:53,400 INFO L93 Difference]: Finished difference Result 393 states and 396 transitions. [2018-10-03 09:09:53,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-03 09:09:53,400 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 258 [2018-10-03 09:09:53,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:53,402 INFO L225 Difference]: With dead ends: 393 [2018-10-03 09:09:53,402 INFO L226 Difference]: Without dead ends: 263 [2018-10-03 09:09:53,403 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.4s impTime 64 [2018-10-03 09:09:53,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-10-03 09:09:53,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2018-10-03 09:09:53,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2018-10-03 09:09:53,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 264 transitions. [2018-10-03 09:09:53,409 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 264 transitions. Word has length 258 [2018-10-03 09:09:53,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:53,409 INFO L480 AbstractCegarLoop]: Abstraction has 263 states and 264 transitions. [2018-10-03 09:09:53,409 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-03 09:09:53,410 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 264 transitions. [2018-10-03 09:09:53,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-10-03 09:09:53,411 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:53,411 INFO L375 BasicCegarLoop]: trace histogram [65, 65, 64, 64, 1, 1, 1, 1] [2018-10-03 09:09:53,411 INFO L423 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:53,411 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:53,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1190144203, now seen corresponding path program 64 times [2018-10-03 09:09:53,412 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:53,412 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:53,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:53,413 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:53,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:53,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:54,449 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 4160 trivial. 0 not checked. [2018-10-03 09:09:54,449 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:54,449 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 [2018-10-03 09:09:54,459 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:09:54,561 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:09:54,561 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:54,589 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:54,836 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 4160 trivial. 0 not checked. [2018-10-03 09:09:54,856 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:54,856 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-10-03 09:09:54,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-03 09:09:54,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-03 09:09:54,857 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:54,857 INFO L87 Difference]: Start difference. First operand 263 states and 264 transitions. Second operand 67 states. [2018-10-03 09:09:55,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:55,417 INFO L93 Difference]: Finished difference Result 399 states and 402 transitions. [2018-10-03 09:09:55,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-03 09:09:55,418 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 262 [2018-10-03 09:09:55,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:55,419 INFO L225 Difference]: With dead ends: 399 [2018-10-03 09:09:55,419 INFO L226 Difference]: Without dead ends: 267 [2018-10-03 09:09:55,419 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.8s impTime 65 [2018-10-03 09:09:55,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-10-03 09:09:55,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2018-10-03 09:09:55,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2018-10-03 09:09:55,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 268 transitions. [2018-10-03 09:09:55,424 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 268 transitions. Word has length 262 [2018-10-03 09:09:55,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:55,425 INFO L480 AbstractCegarLoop]: Abstraction has 267 states and 268 transitions. [2018-10-03 09:09:55,425 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-03 09:09:55,425 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 268 transitions. [2018-10-03 09:09:55,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-10-03 09:09:55,426 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:55,426 INFO L375 BasicCegarLoop]: trace histogram [66, 66, 65, 65, 1, 1, 1, 1] [2018-10-03 09:09:55,427 INFO L423 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:55,427 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:55,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1043412799, now seen corresponding path program 65 times [2018-10-03 09:09:55,427 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:55,427 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:55,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:55,428 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:55,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:55,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:56,571 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 4290 trivial. 0 not checked. [2018-10-03 09:09:56,571 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:56,571 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 [2018-10-03 09:09:56,579 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:10:00,005 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2018-10-03 09:10:00,005 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:00,013 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:00,308 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 4290 trivial. 0 not checked. [2018-10-03 09:10:00,335 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:00,335 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-10-03 09:10:00,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-03 09:10:00,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-03 09:10:00,336 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:00,336 INFO L87 Difference]: Start difference. First operand 267 states and 268 transitions. Second operand 68 states. [2018-10-03 09:10:00,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:00,990 INFO L93 Difference]: Finished difference Result 405 states and 408 transitions. [2018-10-03 09:10:00,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-03 09:10:00,991 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 266 [2018-10-03 09:10:00,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:00,992 INFO L225 Difference]: With dead ends: 405 [2018-10-03 09:10:00,993 INFO L226 Difference]: Without dead ends: 271 [2018-10-03 09:10:00,993 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.8s impTime 66 [2018-10-03 09:10:00,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2018-10-03 09:10:00,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2018-10-03 09:10:00,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-10-03 09:10:00,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 272 transitions. [2018-10-03 09:10:00,998 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 272 transitions. Word has length 266 [2018-10-03 09:10:00,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:00,998 INFO L480 AbstractCegarLoop]: Abstraction has 271 states and 272 transitions. [2018-10-03 09:10:00,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-03 09:10:00,999 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 272 transitions. [2018-10-03 09:10:01,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-10-03 09:10:01,000 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:01,000 INFO L375 BasicCegarLoop]: trace histogram [67, 67, 66, 66, 1, 1, 1, 1] [2018-10-03 09:10:01,000 INFO L423 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:01,000 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:01,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1094612045, now seen corresponding path program 66 times [2018-10-03 09:10:01,001 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:01,001 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:01,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:01,002 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:01,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:01,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:02,142 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 4422 trivial. 0 not checked. [2018-10-03 09:10:02,142 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:02,142 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 [2018-10-03 09:10:02,150 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:10:03,968 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2018-10-03 09:10:03,968 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:03,977 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:04,231 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 4422 trivial. 0 not checked. [2018-10-03 09:10:04,254 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:04,255 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 68 [2018-10-03 09:10:04,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-10-03 09:10:04,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-10-03 09:10:04,256 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:04,256 INFO L87 Difference]: Start difference. First operand 271 states and 272 transitions. Second operand 69 states. [2018-10-03 09:10:04,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:04,854 INFO L93 Difference]: Finished difference Result 411 states and 414 transitions. [2018-10-03 09:10:04,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-03 09:10:04,854 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 270 [2018-10-03 09:10:04,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:04,856 INFO L225 Difference]: With dead ends: 411 [2018-10-03 09:10:04,856 INFO L226 Difference]: Without dead ends: 275 [2018-10-03 09:10:04,856 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.8s impTime 67 [2018-10-03 09:10:04,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2018-10-03 09:10:04,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2018-10-03 09:10:04,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2018-10-03 09:10:04,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 276 transitions. [2018-10-03 09:10:04,862 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 276 transitions. Word has length 270 [2018-10-03 09:10:04,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:04,862 INFO L480 AbstractCegarLoop]: Abstraction has 275 states and 276 transitions. [2018-10-03 09:10:04,862 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-10-03 09:10:04,862 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 276 transitions. [2018-10-03 09:10:04,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-10-03 09:10:04,864 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:04,864 INFO L375 BasicCegarLoop]: trace histogram [68, 68, 67, 67, 1, 1, 1, 1] [2018-10-03 09:10:04,864 INFO L423 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:04,864 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:04,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1764107815, now seen corresponding path program 67 times [2018-10-03 09:10:04,865 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:04,865 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:04,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:04,865 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:04,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:04,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:05,938 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 4556 trivial. 0 not checked. [2018-10-03 09:10:05,938 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:05,938 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 [2018-10-03 09:10:05,946 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:10:06,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:06,059 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:06,354 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 4556 trivial. 0 not checked. [2018-10-03 09:10:06,376 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:06,376 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-10-03 09:10:06,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-03 09:10:06,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-03 09:10:06,377 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:06,377 INFO L87 Difference]: Start difference. First operand 275 states and 276 transitions. Second operand 70 states. [2018-10-03 09:10:07,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:07,082 INFO L93 Difference]: Finished difference Result 417 states and 420 transitions. [2018-10-03 09:10:07,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-03 09:10:07,082 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 274 [2018-10-03 09:10:07,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:07,083 INFO L225 Difference]: With dead ends: 417 [2018-10-03 09:10:07,083 INFO L226 Difference]: Without dead ends: 279 [2018-10-03 09:10:07,083 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.8s impTime 68 [2018-10-03 09:10:07,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2018-10-03 09:10:07,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2018-10-03 09:10:07,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2018-10-03 09:10:07,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 280 transitions. [2018-10-03 09:10:07,089 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 280 transitions. Word has length 274 [2018-10-03 09:10:07,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:07,089 INFO L480 AbstractCegarLoop]: Abstraction has 279 states and 280 transitions. [2018-10-03 09:10:07,089 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-03 09:10:07,089 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 280 transitions. [2018-10-03 09:10:07,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-10-03 09:10:07,091 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:07,091 INFO L375 BasicCegarLoop]: trace histogram [69, 69, 68, 68, 1, 1, 1, 1] [2018-10-03 09:10:07,091 INFO L423 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:07,091 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:07,091 INFO L82 PathProgramCache]: Analyzing trace with hash 224659099, now seen corresponding path program 68 times [2018-10-03 09:10:07,092 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:07,092 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:07,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:07,092 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:10:07,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:07,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:08,520 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 4692 trivial. 0 not checked. [2018-10-03 09:10:08,520 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:08,520 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 [2018-10-03 09:10:08,528 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:10:08,636 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:10:08,636 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:08,640 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:08,912 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 4692 trivial. 0 not checked. [2018-10-03 09:10:08,933 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:08,933 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-10-03 09:10:08,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-03 09:10:08,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-03 09:10:08,934 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:08,934 INFO L87 Difference]: Start difference. First operand 279 states and 280 transitions. Second operand 71 states. [2018-10-03 09:10:09,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:09,665 INFO L93 Difference]: Finished difference Result 423 states and 426 transitions. [2018-10-03 09:10:09,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-03 09:10:09,666 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 278 [2018-10-03 09:10:09,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:09,668 INFO L225 Difference]: With dead ends: 423 [2018-10-03 09:10:09,668 INFO L226 Difference]: Without dead ends: 283 [2018-10-03 09:10:09,668 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.1s impTime 69 [2018-10-03 09:10:09,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-10-03 09:10:09,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2018-10-03 09:10:09,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2018-10-03 09:10:09,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 284 transitions. [2018-10-03 09:10:09,673 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 284 transitions. Word has length 278 [2018-10-03 09:10:09,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:09,673 INFO L480 AbstractCegarLoop]: Abstraction has 283 states and 284 transitions. [2018-10-03 09:10:09,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-03 09:10:09,673 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 284 transitions. [2018-10-03 09:10:09,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-10-03 09:10:09,674 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:09,674 INFO L375 BasicCegarLoop]: trace histogram [70, 70, 69, 69, 1, 1, 1, 1] [2018-10-03 09:10:09,674 INFO L423 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:09,674 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:09,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1795173647, now seen corresponding path program 69 times [2018-10-03 09:10:09,674 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:09,675 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:09,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:09,675 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:09,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:09,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:10,433 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 4830 trivial. 0 not checked. [2018-10-03 09:10:10,433 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:10,433 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 [2018-10-03 09:10:10,441 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:10:13,788 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2018-10-03 09:10:13,788 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:13,794 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:14,066 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 4830 trivial. 0 not checked. [2018-10-03 09:10:14,090 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:14,090 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2018-10-03 09:10:14,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-03 09:10:14,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-03 09:10:14,091 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:14,091 INFO L87 Difference]: Start difference. First operand 283 states and 284 transitions. Second operand 72 states. [2018-10-03 09:10:14,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:14,599 INFO L93 Difference]: Finished difference Result 429 states and 432 transitions. [2018-10-03 09:10:14,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-03 09:10:14,600 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 282 [2018-10-03 09:10:14,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:14,601 INFO L225 Difference]: With dead ends: 429 [2018-10-03 09:10:14,601 INFO L226 Difference]: Without dead ends: 287 [2018-10-03 09:10:14,602 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.5s impTime 70 [2018-10-03 09:10:14,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2018-10-03 09:10:14,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2018-10-03 09:10:14,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2018-10-03 09:10:14,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 288 transitions. [2018-10-03 09:10:14,606 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 288 transitions. Word has length 282 [2018-10-03 09:10:14,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:14,606 INFO L480 AbstractCegarLoop]: Abstraction has 287 states and 288 transitions. [2018-10-03 09:10:14,606 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-03 09:10:14,606 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 288 transitions. [2018-10-03 09:10:14,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-10-03 09:10:14,607 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:14,607 INFO L375 BasicCegarLoop]: trace histogram [71, 71, 70, 70, 1, 1, 1, 1] [2018-10-03 09:10:14,608 INFO L423 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:14,608 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:14,608 INFO L82 PathProgramCache]: Analyzing trace with hash -251684477, now seen corresponding path program 70 times [2018-10-03 09:10:14,608 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:14,608 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:14,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:14,609 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:14,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:14,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:15,497 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 4970 trivial. 0 not checked. [2018-10-03 09:10:15,498 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:15,498 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 [2018-10-03 09:10:15,505 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:10:15,614 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:10:15,614 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:15,618 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:15,884 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 4970 trivial. 0 not checked. [2018-10-03 09:10:15,905 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:15,905 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2018-10-03 09:10:15,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-03 09:10:15,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-03 09:10:15,906 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:15,907 INFO L87 Difference]: Start difference. First operand 287 states and 288 transitions. Second operand 73 states. [2018-10-03 09:10:16,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:16,525 INFO L93 Difference]: Finished difference Result 435 states and 438 transitions. [2018-10-03 09:10:16,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-03 09:10:16,526 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 286 [2018-10-03 09:10:16,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:16,527 INFO L225 Difference]: With dead ends: 435 [2018-10-03 09:10:16,527 INFO L226 Difference]: Without dead ends: 291 [2018-10-03 09:10:16,528 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.6s impTime 71 [2018-10-03 09:10:16,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2018-10-03 09:10:16,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2018-10-03 09:10:16,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2018-10-03 09:10:16,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 292 transitions. [2018-10-03 09:10:16,532 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 292 transitions. Word has length 286 [2018-10-03 09:10:16,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:16,532 INFO L480 AbstractCegarLoop]: Abstraction has 291 states and 292 transitions. [2018-10-03 09:10:16,532 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-03 09:10:16,532 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 292 transitions. [2018-10-03 09:10:16,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-10-03 09:10:16,533 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:16,534 INFO L375 BasicCegarLoop]: trace histogram [72, 72, 71, 71, 1, 1, 1, 1] [2018-10-03 09:10:16,534 INFO L423 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:16,534 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:16,534 INFO L82 PathProgramCache]: Analyzing trace with hash 2112310263, now seen corresponding path program 71 times [2018-10-03 09:10:16,534 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:16,535 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:16,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:16,535 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:16,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:16,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:18,176 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 5112 trivial. 0 not checked. [2018-10-03 09:10:18,176 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:18,176 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 [2018-10-03 09:10:18,184 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:10:23,410 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 72 check-sat command(s) [2018-10-03 09:10:23,410 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:23,421 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:23,975 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 5112 trivial. 0 not checked. [2018-10-03 09:10:24,006 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:24,007 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2018-10-03 09:10:24,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-03 09:10:24,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-03 09:10:24,008 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:24,008 INFO L87 Difference]: Start difference. First operand 291 states and 292 transitions. Second operand 74 states. [2018-10-03 09:10:24,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:24,898 INFO L93 Difference]: Finished difference Result 441 states and 444 transitions. [2018-10-03 09:10:24,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-03 09:10:24,899 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 290 [2018-10-03 09:10:24,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:24,901 INFO L225 Difference]: With dead ends: 441 [2018-10-03 09:10:24,901 INFO L226 Difference]: Without dead ends: 295 [2018-10-03 09:10:24,902 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.3s impTime 72 [2018-10-03 09:10:24,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2018-10-03 09:10:24,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2018-10-03 09:10:24,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2018-10-03 09:10:24,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 296 transitions. [2018-10-03 09:10:24,907 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 296 transitions. Word has length 290 [2018-10-03 09:10:24,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:24,907 INFO L480 AbstractCegarLoop]: Abstraction has 295 states and 296 transitions. [2018-10-03 09:10:24,907 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-03 09:10:24,907 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 296 transitions. [2018-10-03 09:10:24,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-10-03 09:10:24,909 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:24,909 INFO L375 BasicCegarLoop]: trace histogram [73, 73, 72, 72, 1, 1, 1, 1] [2018-10-03 09:10:24,909 INFO L423 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:24,909 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:24,909 INFO L82 PathProgramCache]: Analyzing trace with hash 532431979, now seen corresponding path program 72 times [2018-10-03 09:10:24,910 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:24,910 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:24,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:24,910 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:24,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:24,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:25,761 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 5256 trivial. 0 not checked. [2018-10-03 09:10:25,761 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:25,761 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:10:25,769 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:10:28,564 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2018-10-03 09:10:28,564 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:28,578 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:28,915 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 5256 trivial. 0 not checked. [2018-10-03 09:10:28,941 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:28,941 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 74 [2018-10-03 09:10:28,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-10-03 09:10:28,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-10-03 09:10:28,942 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:28,942 INFO L87 Difference]: Start difference. First operand 295 states and 296 transitions. Second operand 75 states. [2018-10-03 09:10:29,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:29,520 INFO L93 Difference]: Finished difference Result 447 states and 450 transitions. [2018-10-03 09:10:29,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-03 09:10:29,520 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 294 [2018-10-03 09:10:29,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:29,522 INFO L225 Difference]: With dead ends: 447 [2018-10-03 09:10:29,522 INFO L226 Difference]: Without dead ends: 299 [2018-10-03 09:10:29,523 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.5s impTime 73 [2018-10-03 09:10:29,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2018-10-03 09:10:29,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2018-10-03 09:10:29,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-10-03 09:10:29,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 300 transitions. [2018-10-03 09:10:29,528 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 300 transitions. Word has length 294 [2018-10-03 09:10:29,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:29,528 INFO L480 AbstractCegarLoop]: Abstraction has 299 states and 300 transitions. [2018-10-03 09:10:29,528 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-10-03 09:10:29,529 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 300 transitions. [2018-10-03 09:10:29,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-10-03 09:10:29,530 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:29,530 INFO L375 BasicCegarLoop]: trace histogram [74, 74, 73, 73, 1, 1, 1, 1] [2018-10-03 09:10:29,530 INFO L423 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:29,531 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:29,531 INFO L82 PathProgramCache]: Analyzing trace with hash -737967393, now seen corresponding path program 73 times [2018-10-03 09:10:29,531 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:29,531 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:29,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:29,532 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:29,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:29,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:30,379 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 5402 trivial. 0 not checked. [2018-10-03 09:10:30,380 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:30,380 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:10:30,388 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:10:30,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:30,510 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:30,817 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 5402 trivial. 0 not checked. [2018-10-03 09:10:30,838 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:30,838 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2018-10-03 09:10:30,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-03 09:10:30,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-03 09:10:30,839 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:30,839 INFO L87 Difference]: Start difference. First operand 299 states and 300 transitions. Second operand 76 states. [2018-10-03 09:10:31,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:31,488 INFO L93 Difference]: Finished difference Result 453 states and 456 transitions. [2018-10-03 09:10:31,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-03 09:10:31,489 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 298 [2018-10-03 09:10:31,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:31,491 INFO L225 Difference]: With dead ends: 453 [2018-10-03 09:10:31,491 INFO L226 Difference]: Without dead ends: 303 [2018-10-03 09:10:31,491 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.6s impTime 74 [2018-10-03 09:10:31,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2018-10-03 09:10:31,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2018-10-03 09:10:31,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2018-10-03 09:10:31,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 304 transitions. [2018-10-03 09:10:31,497 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 304 transitions. Word has length 298 [2018-10-03 09:10:31,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:31,497 INFO L480 AbstractCegarLoop]: Abstraction has 303 states and 304 transitions. [2018-10-03 09:10:31,497 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-03 09:10:31,497 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 304 transitions. [2018-10-03 09:10:31,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-10-03 09:10:31,498 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:31,498 INFO L375 BasicCegarLoop]: trace histogram [75, 75, 74, 74, 1, 1, 1, 1] [2018-10-03 09:10:31,498 INFO L423 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:31,498 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:31,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1203898195, now seen corresponding path program 74 times [2018-10-03 09:10:31,499 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:31,499 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:31,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:31,499 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:10:31,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:31,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:32,545 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 5550 trivial. 0 not checked. [2018-10-03 09:10:32,545 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:32,546 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 [2018-10-03 09:10:32,553 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:10:32,676 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:10:32,676 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:32,681 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:33,002 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 5550 trivial. 0 not checked. [2018-10-03 09:10:33,023 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:33,023 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2018-10-03 09:10:33,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-10-03 09:10:33,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-10-03 09:10:33,025 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:33,025 INFO L87 Difference]: Start difference. First operand 303 states and 304 transitions. Second operand 77 states. [2018-10-03 09:10:33,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:33,844 INFO L93 Difference]: Finished difference Result 459 states and 462 transitions. [2018-10-03 09:10:33,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-03 09:10:33,845 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 302 [2018-10-03 09:10:33,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:33,846 INFO L225 Difference]: With dead ends: 459 [2018-10-03 09:10:33,846 INFO L226 Difference]: Without dead ends: 307 [2018-10-03 09:10:33,847 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.8s impTime 75 [2018-10-03 09:10:33,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2018-10-03 09:10:33,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2018-10-03 09:10:33,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2018-10-03 09:10:33,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 308 transitions. [2018-10-03 09:10:33,851 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 308 transitions. Word has length 302 [2018-10-03 09:10:33,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:33,851 INFO L480 AbstractCegarLoop]: Abstraction has 307 states and 308 transitions. [2018-10-03 09:10:33,852 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-10-03 09:10:33,852 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 308 transitions. [2018-10-03 09:10:33,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-10-03 09:10:33,853 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:33,853 INFO L375 BasicCegarLoop]: trace histogram [76, 76, 75, 75, 1, 1, 1, 1] [2018-10-03 09:10:33,853 INFO L423 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:33,854 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:33,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1753427513, now seen corresponding path program 75 times [2018-10-03 09:10:33,854 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:33,854 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:33,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:33,855 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:33,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:33,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:35,185 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 5700 trivial. 0 not checked. [2018-10-03 09:10:35,186 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:35,186 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 [2018-10-03 09:10:35,193 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:10:39,941 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 76 check-sat command(s) [2018-10-03 09:10:39,941 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:39,949 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:40,232 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 5700 trivial. 0 not checked. [2018-10-03 09:10:40,257 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:40,257 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2018-10-03 09:10:40,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-10-03 09:10:40,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-10-03 09:10:40,258 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:40,258 INFO L87 Difference]: Start difference. First operand 307 states and 308 transitions. Second operand 78 states. [2018-10-03 09:10:41,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:41,209 INFO L93 Difference]: Finished difference Result 465 states and 468 transitions. [2018-10-03 09:10:41,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-10-03 09:10:41,209 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 306 [2018-10-03 09:10:41,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:41,211 INFO L225 Difference]: With dead ends: 465 [2018-10-03 09:10:41,211 INFO L226 Difference]: Without dead ends: 311 [2018-10-03 09:10:41,211 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.0s impTime 76 [2018-10-03 09:10:41,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-10-03 09:10:41,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2018-10-03 09:10:41,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2018-10-03 09:10:41,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 312 transitions. [2018-10-03 09:10:41,216 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 312 transitions. Word has length 306 [2018-10-03 09:10:41,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:41,217 INFO L480 AbstractCegarLoop]: Abstraction has 311 states and 312 transitions. [2018-10-03 09:10:41,217 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-10-03 09:10:41,217 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 312 transitions. [2018-10-03 09:10:41,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-10-03 09:10:41,218 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:41,219 INFO L375 BasicCegarLoop]: trace histogram [77, 77, 76, 76, 1, 1, 1, 1] [2018-10-03 09:10:41,219 INFO L423 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:41,219 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:41,219 INFO L82 PathProgramCache]: Analyzing trace with hash 255386171, now seen corresponding path program 76 times [2018-10-03 09:10:41,219 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:41,219 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:41,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:41,220 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:41,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:41,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:42,674 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 5852 trivial. 0 not checked. [2018-10-03 09:10:42,675 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:42,675 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 [2018-10-03 09:10:42,682 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:10:42,804 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:10:42,804 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:42,808 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:43,101 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 5852 trivial. 0 not checked. [2018-10-03 09:10:43,121 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:43,122 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2018-10-03 09:10:43,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-10-03 09:10:43,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-10-03 09:10:43,123 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:43,123 INFO L87 Difference]: Start difference. First operand 311 states and 312 transitions. Second operand 79 states. [2018-10-03 09:10:44,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:44,002 INFO L93 Difference]: Finished difference Result 471 states and 474 transitions. [2018-10-03 09:10:44,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-10-03 09:10:44,002 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 310 [2018-10-03 09:10:44,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:44,004 INFO L225 Difference]: With dead ends: 471 [2018-10-03 09:10:44,004 INFO L226 Difference]: Without dead ends: 315 [2018-10-03 09:10:44,004 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.1s impTime 77 [2018-10-03 09:10:44,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2018-10-03 09:10:44,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2018-10-03 09:10:44,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2018-10-03 09:10:44,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 316 transitions. [2018-10-03 09:10:44,009 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 316 transitions. Word has length 310 [2018-10-03 09:10:44,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:44,009 INFO L480 AbstractCegarLoop]: Abstraction has 315 states and 316 transitions. [2018-10-03 09:10:44,009 INFO L481 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-10-03 09:10:44,009 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 316 transitions. [2018-10-03 09:10:44,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-10-03 09:10:44,010 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:44,011 INFO L375 BasicCegarLoop]: trace histogram [78, 78, 77, 77, 1, 1, 1, 1] [2018-10-03 09:10:44,011 INFO L423 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:44,011 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:44,011 INFO L82 PathProgramCache]: Analyzing trace with hash -361023313, now seen corresponding path program 77 times [2018-10-03 09:10:44,011 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:44,011 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:44,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:44,012 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:44,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:44,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:45,495 INFO L134 CoverageAnalysis]: Checked inductivity of 12012 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 6006 trivial. 0 not checked. [2018-10-03 09:10:45,495 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:45,495 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 [2018-10-03 09:10:45,504 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:10:54,764 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 78 check-sat command(s) [2018-10-03 09:10:54,764 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:54,775 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:55,078 INFO L134 CoverageAnalysis]: Checked inductivity of 12012 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 6006 trivial. 0 not checked. [2018-10-03 09:10:55,109 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:55,110 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2018-10-03 09:10:55,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-03 09:10:55,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-03 09:10:55,111 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:55,111 INFO L87 Difference]: Start difference. First operand 315 states and 316 transitions. Second operand 80 states. [2018-10-03 09:10:56,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:56,083 INFO L93 Difference]: Finished difference Result 477 states and 480 transitions. [2018-10-03 09:10:56,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-10-03 09:10:56,083 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 314 [2018-10-03 09:10:56,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:56,085 INFO L225 Difference]: With dead ends: 477 [2018-10-03 09:10:56,085 INFO L226 Difference]: Without dead ends: 319 [2018-10-03 09:10:56,086 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.1s impTime 78 [2018-10-03 09:10:56,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-10-03 09:10:56,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2018-10-03 09:10:56,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-10-03 09:10:56,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 320 transitions. [2018-10-03 09:10:56,090 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 320 transitions. Word has length 314 [2018-10-03 09:10:56,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:56,090 INFO L480 AbstractCegarLoop]: Abstraction has 319 states and 320 transitions. [2018-10-03 09:10:56,090 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-03 09:10:56,090 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 320 transitions. [2018-10-03 09:10:56,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-10-03 09:10:56,091 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:56,091 INFO L375 BasicCegarLoop]: trace histogram [79, 79, 78, 78, 1, 1, 1, 1] [2018-10-03 09:10:56,092 INFO L423 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:56,092 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:56,092 INFO L82 PathProgramCache]: Analyzing trace with hash 340317475, now seen corresponding path program 78 times [2018-10-03 09:10:56,092 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:56,092 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:56,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:56,093 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:56,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:56,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:57,096 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 6162 trivial. 0 not checked. [2018-10-03 09:10:57,096 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:57,097 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:10:57,104 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:11:00,488 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2018-10-03 09:11:00,488 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:11:00,499 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:11:00,798 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 6162 trivial. 0 not checked. [2018-10-03 09:11:00,824 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:11:00,824 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 80 [2018-10-03 09:11:00,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-10-03 09:11:00,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-10-03 09:11:00,825 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:11:00,826 INFO L87 Difference]: Start difference. First operand 319 states and 320 transitions. Second operand 81 states. [2018-10-03 09:11:01,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:11:01,539 INFO L93 Difference]: Finished difference Result 483 states and 486 transitions. [2018-10-03 09:11:01,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-03 09:11:01,539 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 318 [2018-10-03 09:11:01,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:11:01,541 INFO L225 Difference]: With dead ends: 483 [2018-10-03 09:11:01,541 INFO L226 Difference]: Without dead ends: 323 [2018-10-03 09:11:01,541 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.7s impTime 79 [2018-10-03 09:11:01,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2018-10-03 09:11:01,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2018-10-03 09:11:01,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2018-10-03 09:11:01,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 324 transitions. [2018-10-03 09:11:01,546 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 324 transitions. Word has length 318 [2018-10-03 09:11:01,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:11:01,546 INFO L480 AbstractCegarLoop]: Abstraction has 323 states and 324 transitions. [2018-10-03 09:11:01,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-10-03 09:11:01,546 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 324 transitions. [2018-10-03 09:11:01,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-10-03 09:11:01,547 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:11:01,548 INFO L375 BasicCegarLoop]: trace histogram [80, 80, 79, 79, 1, 1, 1, 1] [2018-10-03 09:11:01,548 INFO L423 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:11:01,548 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:11:01,548 INFO L82 PathProgramCache]: Analyzing trace with hash -416893033, now seen corresponding path program 79 times [2018-10-03 09:11:01,548 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:11:01,548 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:11:01,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:01,549 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:11:01,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:01,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:02,884 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 6320 trivial. 0 not checked. [2018-10-03 09:11:02,884 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:11:02,884 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 [2018-10-03 09:11:02,892 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:11:03,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:03,024 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:11:03,336 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 6320 trivial. 0 not checked. [2018-10-03 09:11:03,356 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:11:03,357 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2018-10-03 09:11:03,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-10-03 09:11:03,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-10-03 09:11:03,358 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:11:03,358 INFO L87 Difference]: Start difference. First operand 323 states and 324 transitions. Second operand 82 states. [2018-10-03 09:11:04,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:11:04,301 INFO L93 Difference]: Finished difference Result 489 states and 492 transitions. [2018-10-03 09:11:04,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-10-03 09:11:04,302 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 322 [2018-10-03 09:11:04,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:11:04,303 INFO L225 Difference]: With dead ends: 489 [2018-10-03 09:11:04,303 INFO L226 Difference]: Without dead ends: 327 [2018-10-03 09:11:04,303 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.0s impTime 80 [2018-10-03 09:11:04,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-10-03 09:11:04,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2018-10-03 09:11:04,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2018-10-03 09:11:04,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 328 transitions. [2018-10-03 09:11:04,308 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 328 transitions. Word has length 322 [2018-10-03 09:11:04,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:11:04,308 INFO L480 AbstractCegarLoop]: Abstraction has 327 states and 328 transitions. [2018-10-03 09:11:04,308 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-10-03 09:11:04,308 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 328 transitions. [2018-10-03 09:11:04,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-10-03 09:11:04,309 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:11:04,309 INFO L375 BasicCegarLoop]: trace histogram [81, 81, 80, 80, 1, 1, 1, 1] [2018-10-03 09:11:04,309 INFO L423 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:11:04,310 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:11:04,310 INFO L82 PathProgramCache]: Analyzing trace with hash -317071349, now seen corresponding path program 80 times [2018-10-03 09:11:04,310 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:11:04,310 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:11:04,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:04,311 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:11:04,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:04,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:05,591 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 6480 trivial. 0 not checked. [2018-10-03 09:11:05,591 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:11:05,592 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 [2018-10-03 09:11:05,599 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:11:05,728 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:11:05,728 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:11:05,733 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:11:06,050 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 6480 trivial. 0 not checked. [2018-10-03 09:11:06,070 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:11:06,070 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 82 [2018-10-03 09:11:06,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-10-03 09:11:06,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-10-03 09:11:06,071 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:11:06,072 INFO L87 Difference]: Start difference. First operand 327 states and 328 transitions. Second operand 83 states. [2018-10-03 09:11:07,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:11:07,106 INFO L93 Difference]: Finished difference Result 495 states and 498 transitions. [2018-10-03 09:11:07,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-10-03 09:11:07,106 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 326 [2018-10-03 09:11:07,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:11:07,107 INFO L225 Difference]: With dead ends: 495 [2018-10-03 09:11:07,108 INFO L226 Difference]: Without dead ends: 331 [2018-10-03 09:11:07,108 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 1.0s impTime 81 [2018-10-03 09:11:07,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2018-10-03 09:11:07,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2018-10-03 09:11:07,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-10-03 09:11:07,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 332 transitions. [2018-10-03 09:11:07,113 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 332 transitions. Word has length 326 [2018-10-03 09:11:07,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:11:07,113 INFO L480 AbstractCegarLoop]: Abstraction has 331 states and 332 transitions. [2018-10-03 09:11:07,113 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-10-03 09:11:07,113 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 332 transitions. [2018-10-03 09:11:07,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-10-03 09:11:07,115 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:11:07,115 INFO L375 BasicCegarLoop]: trace histogram [82, 82, 81, 81, 1, 1, 1, 1] [2018-10-03 09:11:07,115 INFO L423 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:11:07,115 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:11:07,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1616425345, now seen corresponding path program 81 times [2018-10-03 09:11:07,115 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:11:07,115 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:11:07,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:07,116 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:11:07,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:07,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:08,221 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 6642 trivial. 0 not checked. [2018-10-03 09:11:08,221 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:11:08,221 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 [2018-10-03 09:11:08,228 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:11:14,383 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 82 check-sat command(s) [2018-10-03 09:11:14,383 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:11:14,391 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:11:14,704 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 6642 trivial. 0 not checked. [2018-10-03 09:11:14,729 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:11:14,729 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2018-10-03 09:11:14,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-10-03 09:11:14,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-10-03 09:11:14,730 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:11:14,730 INFO L87 Difference]: Start difference. First operand 331 states and 332 transitions. Second operand 84 states. [2018-10-03 09:11:15,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:11:15,596 INFO L93 Difference]: Finished difference Result 501 states and 504 transitions. [2018-10-03 09:11:15,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-10-03 09:11:15,597 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 330 [2018-10-03 09:11:15,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:11:15,599 INFO L225 Difference]: With dead ends: 501 [2018-10-03 09:11:15,599 INFO L226 Difference]: Without dead ends: 335 [2018-10-03 09:11:15,599 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.8s impTime 82 [2018-10-03 09:11:15,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2018-10-03 09:11:15,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2018-10-03 09:11:15,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2018-10-03 09:11:15,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 336 transitions. [2018-10-03 09:11:15,604 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 336 transitions. Word has length 330 [2018-10-03 09:11:15,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:11:15,605 INFO L480 AbstractCegarLoop]: Abstraction has 335 states and 336 transitions. [2018-10-03 09:11:15,605 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-10-03 09:11:15,605 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 336 transitions. [2018-10-03 09:11:15,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-10-03 09:11:15,606 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:11:15,606 INFO L375 BasicCegarLoop]: trace histogram [83, 83, 82, 82, 1, 1, 1, 1] [2018-10-03 09:11:15,606 INFO L423 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:11:15,606 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:11:15,606 INFO L82 PathProgramCache]: Analyzing trace with hash 668205811, now seen corresponding path program 82 times [2018-10-03 09:11:15,607 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:11:15,607 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:11:15,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:15,607 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:11:15,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:15,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:17,124 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 6806 trivial. 0 not checked. [2018-10-03 09:11:17,124 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:11:17,124 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:11:17,134 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:11:17,263 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:11:17,264 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:11:17,268 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:11:17,586 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 6806 trivial. 0 not checked. [2018-10-03 09:11:17,607 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:11:17,607 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 84 [2018-10-03 09:11:17,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-10-03 09:11:17,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-10-03 09:11:17,608 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:11:17,608 INFO L87 Difference]: Start difference. First operand 335 states and 336 transitions. Second operand 85 states. [2018-10-03 09:11:18,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:11:18,771 INFO L93 Difference]: Finished difference Result 507 states and 510 transitions. [2018-10-03 09:11:18,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-10-03 09:11:18,772 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 334 [2018-10-03 09:11:18,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:11:18,774 INFO L225 Difference]: With dead ends: 507 [2018-10-03 09:11:18,774 INFO L226 Difference]: Without dead ends: 339 [2018-10-03 09:11:18,774 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.2s impTime 83 [2018-10-03 09:11:18,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2018-10-03 09:11:18,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 339. [2018-10-03 09:11:18,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2018-10-03 09:11:18,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 340 transitions. [2018-10-03 09:11:18,779 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 340 transitions. Word has length 334 [2018-10-03 09:11:18,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:11:18,780 INFO L480 AbstractCegarLoop]: Abstraction has 339 states and 340 transitions. [2018-10-03 09:11:18,780 INFO L481 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-10-03 09:11:18,780 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 340 transitions. [2018-10-03 09:11:18,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-10-03 09:11:18,781 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:11:18,781 INFO L375 BasicCegarLoop]: trace histogram [84, 84, 83, 83, 1, 1, 1, 1] [2018-10-03 09:11:18,781 INFO L423 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:11:18,781 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:11:18,781 INFO L82 PathProgramCache]: Analyzing trace with hash 505740647, now seen corresponding path program 83 times [2018-10-03 09:11:18,782 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:11:18,782 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:11:18,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:18,782 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:11:18,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:18,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:20,685 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 6972 trivial. 0 not checked. [2018-10-03 09:11:20,685 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:11:20,685 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 [2018-10-03 09:11:20,694 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:11:29,629 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 84 check-sat command(s) [2018-10-03 09:11:29,630 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:11:29,641 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:11:30,012 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 6972 trivial. 0 not checked. [2018-10-03 09:11:30,044 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:11:30,044 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2018-10-03 09:11:30,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-10-03 09:11:30,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-10-03 09:11:30,045 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:11:30,045 INFO L87 Difference]: Start difference. First operand 339 states and 340 transitions. Second operand 86 states. [2018-10-03 09:11:31,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:11:31,183 INFO L93 Difference]: Finished difference Result 513 states and 516 transitions. [2018-10-03 09:11:31,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-10-03 09:11:31,184 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 338 [2018-10-03 09:11:31,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:11:31,185 INFO L225 Difference]: With dead ends: 513 [2018-10-03 09:11:31,185 INFO L226 Difference]: Without dead ends: 343 [2018-10-03 09:11:31,185 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.5s impTime 84 [2018-10-03 09:11:31,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2018-10-03 09:11:31,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2018-10-03 09:11:31,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2018-10-03 09:11:31,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 344 transitions. [2018-10-03 09:11:31,190 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 344 transitions. Word has length 338 [2018-10-03 09:11:31,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:11:31,190 INFO L480 AbstractCegarLoop]: Abstraction has 343 states and 344 transitions. [2018-10-03 09:11:31,190 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-10-03 09:11:31,190 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 344 transitions. [2018-10-03 09:11:31,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-10-03 09:11:31,191 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:11:31,191 INFO L375 BasicCegarLoop]: trace histogram [85, 85, 84, 84, 1, 1, 1, 1] [2018-10-03 09:11:31,192 INFO L423 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:11:31,192 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:11:31,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1251950043, now seen corresponding path program 84 times [2018-10-03 09:11:31,192 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:11:31,192 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:11:31,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:31,193 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:11:31,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:31,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:32,543 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 7140 trivial. 0 not checked. [2018-10-03 09:11:32,543 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:11:32,543 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 [2018-10-03 09:11:32,552 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:11:37,205 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 85 check-sat command(s) [2018-10-03 09:11:37,206 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:11:37,222 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:11:37,646 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 7140 trivial. 0 not checked. [2018-10-03 09:11:37,675 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:11:37,675 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 86 [2018-10-03 09:11:37,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-10-03 09:11:37,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-10-03 09:11:37,676 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:11:37,676 INFO L87 Difference]: Start difference. First operand 343 states and 344 transitions. Second operand 87 states. [2018-10-03 09:11:38,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:11:38,752 INFO L93 Difference]: Finished difference Result 519 states and 522 transitions. [2018-10-03 09:11:38,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-10-03 09:11:38,753 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 342 [2018-10-03 09:11:38,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:11:38,754 INFO L225 Difference]: With dead ends: 519 [2018-10-03 09:11:38,754 INFO L226 Difference]: Without dead ends: 347 [2018-10-03 09:11:38,754 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 85 [2018-10-03 09:11:38,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2018-10-03 09:11:38,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2018-10-03 09:11:38,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2018-10-03 09:11:38,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 348 transitions. [2018-10-03 09:11:38,760 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 348 transitions. Word has length 342 [2018-10-03 09:11:38,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:11:38,760 INFO L480 AbstractCegarLoop]: Abstraction has 347 states and 348 transitions. [2018-10-03 09:11:38,760 INFO L481 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-10-03 09:11:38,760 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 348 transitions. [2018-10-03 09:11:38,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-10-03 09:11:38,761 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:11:38,762 INFO L375 BasicCegarLoop]: trace histogram [86, 86, 85, 85, 1, 1, 1, 1] [2018-10-03 09:11:38,762 INFO L423 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:11:38,762 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:11:38,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1690813519, now seen corresponding path program 85 times [2018-10-03 09:11:38,762 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:11:38,762 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:11:38,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:38,763 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:11:38,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:38,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:40,755 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 7310 trivial. 0 not checked. [2018-10-03 09:11:40,755 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:11:40,756 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 [2018-10-03 09:11:40,764 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:11:40,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:40,911 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:11:41,266 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 7310 trivial. 0 not checked. [2018-10-03 09:11:41,287 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:11:41,287 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2018-10-03 09:11:41,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-03 09:11:41,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-03 09:11:41,288 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:11:41,288 INFO L87 Difference]: Start difference. First operand 347 states and 348 transitions. Second operand 88 states. [2018-10-03 09:11:42,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:11:42,462 INFO L93 Difference]: Finished difference Result 525 states and 528 transitions. [2018-10-03 09:11:42,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-10-03 09:11:42,463 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 346 [2018-10-03 09:11:42,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:11:42,465 INFO L225 Difference]: With dead ends: 525 [2018-10-03 09:11:42,465 INFO L226 Difference]: Without dead ends: 351 [2018-10-03 09:11:42,465 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.6s impTime 86 [2018-10-03 09:11:42,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2018-10-03 09:11:42,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2018-10-03 09:11:42,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2018-10-03 09:11:42,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 352 transitions. [2018-10-03 09:11:42,471 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 352 transitions. Word has length 346 [2018-10-03 09:11:42,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:11:42,471 INFO L480 AbstractCegarLoop]: Abstraction has 351 states and 352 transitions. [2018-10-03 09:11:42,471 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-10-03 09:11:42,471 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 352 transitions. [2018-10-03 09:11:42,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-10-03 09:11:42,472 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:11:42,473 INFO L375 BasicCegarLoop]: trace histogram [87, 87, 86, 86, 1, 1, 1, 1] [2018-10-03 09:11:42,473 INFO L423 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:11:42,473 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:11:42,473 INFO L82 PathProgramCache]: Analyzing trace with hash -744255293, now seen corresponding path program 86 times [2018-10-03 09:11:42,473 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:11:42,473 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:11:42,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:42,474 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:11:42,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:42,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:43,680 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 7482 trivial. 0 not checked. [2018-10-03 09:11:43,680 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:11:43,680 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 [2018-10-03 09:11:43,687 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:11:43,830 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:11:43,831 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:11:43,836 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:11:44,173 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 7482 trivial. 0 not checked. [2018-10-03 09:11:44,193 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:11:44,194 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 88 [2018-10-03 09:11:44,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-10-03 09:11:44,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-10-03 09:11:44,195 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:11:44,195 INFO L87 Difference]: Start difference. First operand 351 states and 352 transitions. Second operand 89 states. [2018-10-03 09:11:45,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:11:45,106 INFO L93 Difference]: Finished difference Result 531 states and 534 transitions. [2018-10-03 09:11:45,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-03 09:11:45,107 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 350 [2018-10-03 09:11:45,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:11:45,108 INFO L225 Difference]: With dead ends: 531 [2018-10-03 09:11:45,108 INFO L226 Difference]: Without dead ends: 355 [2018-10-03 09:11:45,109 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.8s impTime 87 [2018-10-03 09:11:45,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2018-10-03 09:11:45,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 355. [2018-10-03 09:11:45,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2018-10-03 09:11:45,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 356 transitions. [2018-10-03 09:11:45,113 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 356 transitions. Word has length 350 [2018-10-03 09:11:45,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:11:45,113 INFO L480 AbstractCegarLoop]: Abstraction has 355 states and 356 transitions. [2018-10-03 09:11:45,113 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-10-03 09:11:45,114 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 356 transitions. [2018-10-03 09:11:45,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-10-03 09:11:45,115 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:11:45,115 INFO L375 BasicCegarLoop]: trace histogram [88, 88, 87, 87, 1, 1, 1, 1] [2018-10-03 09:11:45,115 INFO L423 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:11:45,115 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:11:45,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1840751415, now seen corresponding path program 87 times [2018-10-03 09:11:45,115 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:11:45,115 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:11:45,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:45,116 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:11:45,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:45,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:46,500 INFO L134 CoverageAnalysis]: Checked inductivity of 15312 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 7656 trivial. 0 not checked. [2018-10-03 09:11:46,501 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:11:46,501 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 [2018-10-03 09:11:46,511 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:11:54,586 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 88 check-sat command(s) [2018-10-03 09:11:54,586 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:11:54,595 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:11:54,935 INFO L134 CoverageAnalysis]: Checked inductivity of 15312 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 7656 trivial. 0 not checked. [2018-10-03 09:11:54,960 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:11:54,961 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2018-10-03 09:11:54,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-10-03 09:11:54,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-10-03 09:11:54,962 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:11:54,962 INFO L87 Difference]: Start difference. First operand 355 states and 356 transitions. Second operand 90 states. [2018-10-03 09:11:56,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:11:56,045 INFO L93 Difference]: Finished difference Result 537 states and 540 transitions. [2018-10-03 09:11:56,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-10-03 09:11:56,046 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 354 [2018-10-03 09:11:56,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:11:56,048 INFO L225 Difference]: With dead ends: 537 [2018-10-03 09:11:56,048 INFO L226 Difference]: Without dead ends: 359 [2018-10-03 09:11:56,048 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.0s impTime 88 [2018-10-03 09:11:56,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2018-10-03 09:11:56,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2018-10-03 09:11:56,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2018-10-03 09:11:56,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 360 transitions. [2018-10-03 09:11:56,053 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 360 transitions. Word has length 354 [2018-10-03 09:11:56,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:11:56,053 INFO L480 AbstractCegarLoop]: Abstraction has 359 states and 360 transitions. [2018-10-03 09:11:56,053 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-10-03 09:11:56,053 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 360 transitions. [2018-10-03 09:11:56,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-10-03 09:11:56,055 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:11:56,055 INFO L375 BasicCegarLoop]: trace histogram [89, 89, 88, 88, 1, 1, 1, 1] [2018-10-03 09:11:56,055 INFO L423 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:11:56,055 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:11:56,055 INFO L82 PathProgramCache]: Analyzing trace with hash 956890027, now seen corresponding path program 88 times [2018-10-03 09:11:56,055 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:11:56,055 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:11:56,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:56,056 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:11:56,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:56,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:57,897 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 7832 trivial. 0 not checked. [2018-10-03 09:11:57,897 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:11:57,897 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 [2018-10-03 09:11:57,904 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:11:58,043 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:11:58,043 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:11:58,048 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:11:58,393 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 7832 trivial. 0 not checked. [2018-10-03 09:11:58,413 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:11:58,413 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 90 [2018-10-03 09:11:58,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-10-03 09:11:58,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-10-03 09:11:58,414 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:11:58,414 INFO L87 Difference]: Start difference. First operand 359 states and 360 transitions. Second operand 91 states. [2018-10-03 09:11:59,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:11:59,698 INFO L93 Difference]: Finished difference Result 543 states and 546 transitions. [2018-10-03 09:11:59,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-10-03 09:11:59,698 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 358 [2018-10-03 09:11:59,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:11:59,700 INFO L225 Difference]: With dead ends: 543 [2018-10-03 09:11:59,700 INFO L226 Difference]: Without dead ends: 363 [2018-10-03 09:11:59,700 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.5s impTime 89 [2018-10-03 09:11:59,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2018-10-03 09:11:59,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2018-10-03 09:11:59,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2018-10-03 09:11:59,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 364 transitions. [2018-10-03 09:11:59,706 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 364 transitions. Word has length 358 [2018-10-03 09:11:59,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:11:59,706 INFO L480 AbstractCegarLoop]: Abstraction has 363 states and 364 transitions. [2018-10-03 09:11:59,706 INFO L481 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-10-03 09:11:59,706 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 364 transitions. [2018-10-03 09:11:59,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-10-03 09:11:59,707 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:11:59,707 INFO L375 BasicCegarLoop]: trace histogram [90, 90, 89, 89, 1, 1, 1, 1] [2018-10-03 09:11:59,708 INFO L423 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:11:59,708 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:11:59,708 INFO L82 PathProgramCache]: Analyzing trace with hash 723294751, now seen corresponding path program 89 times [2018-10-03 09:11:59,708 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:11:59,708 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:11:59,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:59,709 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:11:59,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:59,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:12:01,567 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 8010 trivial. 0 not checked. [2018-10-03 09:12:01,568 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:12:01,568 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:12:01,577 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:12:12,742 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 90 check-sat command(s) [2018-10-03 09:12:12,742 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:12:12,753 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:12:13,103 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 8010 trivial. 0 not checked. [2018-10-03 09:12:13,133 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:12:13,133 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2018-10-03 09:12:13,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-10-03 09:12:13,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-10-03 09:12:13,134 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:12:13,134 INFO L87 Difference]: Start difference. First operand 363 states and 364 transitions. Second operand 92 states. [2018-10-03 09:12:14,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:12:14,370 INFO L93 Difference]: Finished difference Result 549 states and 552 transitions. [2018-10-03 09:12:14,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-10-03 09:12:14,371 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 362 [2018-10-03 09:12:14,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:12:14,373 INFO L225 Difference]: With dead ends: 549 [2018-10-03 09:12:14,373 INFO L226 Difference]: Without dead ends: 367 [2018-10-03 09:12:14,374 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.5s impTime 90 [2018-10-03 09:12:14,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2018-10-03 09:12:14,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 367. [2018-10-03 09:12:14,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2018-10-03 09:12:14,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 368 transitions. [2018-10-03 09:12:14,379 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 368 transitions. Word has length 362 [2018-10-03 09:12:14,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:12:14,379 INFO L480 AbstractCegarLoop]: Abstraction has 367 states and 368 transitions. [2018-10-03 09:12:14,379 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-10-03 09:12:14,379 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 368 transitions. [2018-10-03 09:12:14,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-10-03 09:12:14,380 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:12:14,380 INFO L375 BasicCegarLoop]: trace histogram [91, 91, 90, 90, 1, 1, 1, 1] [2018-10-03 09:12:14,381 INFO L423 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:12:14,381 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:12:14,381 INFO L82 PathProgramCache]: Analyzing trace with hash -386433389, now seen corresponding path program 90 times [2018-10-03 09:12:14,381 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:12:14,381 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:12:14,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:14,382 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:12:14,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:14,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:12:16,234 INFO L134 CoverageAnalysis]: Checked inductivity of 16380 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 8190 trivial. 0 not checked. [2018-10-03 09:12:16,234 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:12:16,234 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:12:16,242 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE Received shutdown request... [2018-10-03 09:12:21,869 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 91 check-sat command(s) [2018-10-03 09:12:21,869 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:12:21,885 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:12:21,891 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-03 09:12:22,092 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:12:22,093 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-03 09:12:22,098 WARN L205 ceAbstractionStarter]: Timeout [2018-10-03 09:12:22,098 INFO L202 PluginConnector]: Adding new model array3.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.10 09:12:22 BoogieIcfgContainer [2018-10-03 09:12:22,098 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-03 09:12:22,099 INFO L168 Benchmark]: Toolchain (without parser) took 251444.42 ms. Allocated memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: -24.6 MB). Free memory was 1.5 GB in the beginning and 928.6 MB in the end (delta: 525.0 MB). Peak memory consumption was 500.3 MB. Max. memory is 7.1 GB. [2018-10-03 09:12:22,101 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 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. [2018-10-03 09:12:22,101 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.57 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. [2018-10-03 09:12:22,101 INFO L168 Benchmark]: Boogie Preprocessor took 20.04 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. [2018-10-03 09:12:22,102 INFO L168 Benchmark]: RCFGBuilder took 280.10 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. [2018-10-03 09:12:22,102 INFO L168 Benchmark]: TraceAbstraction took 251098.01 ms. Allocated memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: -24.6 MB). Free memory was 1.4 GB in the beginning and 928.6 MB in the end (delta: 503.8 MB). Peak memory consumption was 479.2 MB. Max. memory is 7.1 GB. [2018-10-03 09:12:22,105 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 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 40.57 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 20.04 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 280.10 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 251098.01 ms. Allocated memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: -24.6 MB). Free memory was 1.4 GB in the beginning and 928.6 MB in the end (delta: 503.8 MB). Peak memory consumption was 479.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 56). Cancelled while BasicCegarLoop was analyzing trace of length 367 with TraceHistMax 91, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. TIMEOUT Result, 251.0s OverallTime, 91 OverallIterations, 91 TraceHistogramMax, 39.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 540 SDtfs, 7444 SDslu, 10249 SDs, 0 SdLazy, 10429 SolverSat, 7718 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 20.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20650 GetRequests, 16555 SyntacticMatches, 0 SemanticMatches, 4095 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 92.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=367occurred in iteration=90, 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, 90 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.6s SsaConstructionTime, 96.2s SatisfiabilityAnalysisTime, 99.3s InterpolantComputationTime, 33114 NumberOfCodeBlocks, 33114 NumberOfCodeBlocksAsserted, 2219 NumberOfCheckSat, 32935 ConstructedInterpolants, 0 QuantifiedInterpolants, 15910575 SizeOfPredicates, 0 NumberOfNonLiveVariables, 49573 ConjunctsInSsa, 4183 ConjunctsInUnsatCore, 179 InterpolantComputations, 1 PerfectInterpolantSequences, 485940/971880 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/array3.i_4.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-03_09-12-22-115.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/array3.i_4.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-03_09-12-22-115.csv Completed graceful shutdown