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/20170319-ConjunctivePathPrograms/functions1.i_3.bplTransformedIcfg_BEv2_8.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-9f4048f-m [2018-10-04 14:23:46,478 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-04 14:23:46,480 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-04 14:23:46,492 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-04 14:23:46,492 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-04 14:23:46,493 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-04 14:23:46,495 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-04 14:23:46,496 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-04 14:23:46,498 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-04 14:23:46,499 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-04 14:23:46,500 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-04 14:23:46,500 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-04 14:23:46,501 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-04 14:23:46,502 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-04 14:23:46,503 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-04 14:23:46,504 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-04 14:23:46,505 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-04 14:23:46,507 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-04 14:23:46,509 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-04 14:23:46,510 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-04 14:23:46,512 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-04 14:23:46,515 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-04 14:23:46,517 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-04 14:23:46,518 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-04 14:23:46,518 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-04 14:23:46,519 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-04 14:23:46,524 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-04 14:23:46,525 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-04 14:23:46,526 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-04 14:23:46,529 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-04 14:23:46,529 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-04 14:23:46,530 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-04 14:23:46,530 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-04 14:23:46,530 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-04 14:23:46,533 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-04 14:23:46,533 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-04 14:23:46,534 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf [2018-10-04 14:23:46,564 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-04 14:23:46,565 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-04 14:23:46,566 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-04 14:23:46,566 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-04 14:23:46,566 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-04 14:23:46,567 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-04 14:23:46,567 INFO L133 SettingsManager]: * Use SBE=true [2018-10-04 14:23:46,567 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-04 14:23:46,567 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-04 14:23:46,567 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-04 14:23:46,568 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-04 14:23:46,569 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-04 14:23:46,569 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-04 14:23:46,569 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-04 14:23:46,569 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-04 14:23:46,569 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-04 14:23:46,570 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-04 14:23:46,570 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-04 14:23:46,570 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-04 14:23:46,570 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-04 14:23:46,570 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-04 14:23:46,570 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-04 14:23:46,571 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-04 14:23:46,572 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-04 14:23:46,572 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-04 14:23:46,572 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-04 14:23:46,572 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-04 14:23:46,573 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-04 14:23:46,573 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-04 14:23:46,573 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-04 14:23:46,573 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-04 14:23:46,640 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-04 14:23:46,654 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-04 14:23:46,661 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-04 14:23:46,663 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-04 14:23:46,663 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-04 14:23:46,664 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/functions1.i_3.bplTransformedIcfg_BEv2_8.bpl [2018-10-04 14:23:46,665 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/functions1.i_3.bplTransformedIcfg_BEv2_8.bpl' [2018-10-04 14:23:46,716 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-04 14:23:46,718 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-04 14:23:46,719 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-04 14:23:46,719 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-04 14:23:46,719 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-04 14:23:46,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "functions1.i_3.bplTransformedIcfg_BEv2_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:23:46" (1/1) ... [2018-10-04 14:23:46,751 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "functions1.i_3.bplTransformedIcfg_BEv2_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:23:46" (1/1) ... [2018-10-04 14:23:46,758 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-04 14:23:46,758 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-04 14:23:46,759 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-04 14:23:46,759 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-04 14:23:46,769 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "functions1.i_3.bplTransformedIcfg_BEv2_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:23:46" (1/1) ... [2018-10-04 14:23:46,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "functions1.i_3.bplTransformedIcfg_BEv2_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:23:46" (1/1) ... [2018-10-04 14:23:46,771 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "functions1.i_3.bplTransformedIcfg_BEv2_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:23:46" (1/1) ... [2018-10-04 14:23:46,771 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "functions1.i_3.bplTransformedIcfg_BEv2_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:23:46" (1/1) ... [2018-10-04 14:23:46,776 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "functions1.i_3.bplTransformedIcfg_BEv2_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:23:46" (1/1) ... [2018-10-04 14:23:46,779 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "functions1.i_3.bplTransformedIcfg_BEv2_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:23:46" (1/1) ... [2018-10-04 14:23:46,779 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "functions1.i_3.bplTransformedIcfg_BEv2_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:23:46" (1/1) ... [2018-10-04 14:23:46,781 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-04 14:23:46,782 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-04 14:23:46,782 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-04 14:23:46,782 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-04 14:23:46,783 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "functions1.i_3.bplTransformedIcfg_BEv2_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:23:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-04 14:23:46,849 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-04 14:23:46,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-04 14:23:46,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-04 14:23:47,064 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-04 14:23:47,065 INFO L202 PluginConnector]: Adding new model functions1.i_3.bplTransformedIcfg_BEv2_8.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 02:23:47 BoogieIcfgContainer [2018-10-04 14:23:47,065 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-04 14:23:47,066 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-04 14:23:47,066 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-04 14:23:47,070 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-04 14:23:47,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "functions1.i_3.bplTransformedIcfg_BEv2_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:23:46" (1/2) ... [2018-10-04 14:23:47,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e70b7b0 and model type functions1.i_3.bplTransformedIcfg_BEv2_8.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 02:23:47, skipping insertion in model container [2018-10-04 14:23:47,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "functions1.i_3.bplTransformedIcfg_BEv2_8.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 02:23:47" (2/2) ... [2018-10-04 14:23:47,074 INFO L112 eAbstractionObserver]: Analyzing ICFG functions1.i_3.bplTransformedIcfg_BEv2_8.bpl [2018-10-04 14:23:47,084 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-04 14:23:47,096 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-04 14:23:47,147 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-04 14:23:47,148 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-04 14:23:47,148 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-04 14:23:47,148 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-04 14:23:47,148 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-04 14:23:47,149 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-04 14:23:47,149 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-04 14:23:47,149 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-04 14:23:47,149 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-04 14:23:47,165 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-10-04 14:23:47,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-10-04 14:23:47,174 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:23:47,175 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-10-04 14:23:47,176 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:23:47,189 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:23:47,190 INFO L82 PathProgramCache]: Analyzing trace with hash 29955, now seen corresponding path program 1 times [2018-10-04 14:23:47,192 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:23:47,193 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:23:47,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:23:47,252 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:23:47,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:23:47,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:23:47,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:23:47,367 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-04 14:23:47,367 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-04 14:23:47,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-04 14:23:47,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-04 14:23:47,386 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:23:47,389 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-10-04 14:23:47,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:23:47,418 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2018-10-04 14:23:47,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-04 14:23:47,420 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-10-04 14:23:47,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:23:47,430 INFO L225 Difference]: With dead ends: 9 [2018-10-04 14:23:47,431 INFO L226 Difference]: Without dead ends: 5 [2018-10-04 14:23:47,434 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 1 [2018-10-04 14:23:47,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-10-04 14:23:47,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-10-04 14:23:47,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-10-04 14:23:47,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-10-04 14:23:47,462 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-10-04 14:23:47,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:23:47,463 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-10-04 14:23:47,463 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-04 14:23:47,463 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-10-04 14:23:47,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-10-04 14:23:47,463 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:23:47,463 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-10-04 14:23:47,464 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:23:47,464 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:23:47,464 INFO L82 PathProgramCache]: Analyzing trace with hash 930412, now seen corresponding path program 1 times [2018-10-04 14:23:47,464 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:23:47,464 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:23:47,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:23:47,466 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:23:47,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:23:47,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:23:47,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:23:47,611 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:23:47,611 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:23:47,628 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:23:47,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:23:47,660 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:23:47,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:23:47,813 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:23:47,813 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-10-04 14:23:47,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-04 14:23:47,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-04 14:23:47,815 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:23:47,815 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2018-10-04 14:23:47,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:23:47,897 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2018-10-04 14:23:47,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-04 14:23:47,898 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-10-04 14:23:47,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:23:47,900 INFO L225 Difference]: With dead ends: 8 [2018-10-04 14:23:47,900 INFO L226 Difference]: Without dead ends: 6 [2018-10-04 14:23:47,901 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 2 [2018-10-04 14:23:47,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-10-04 14:23:47,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-10-04 14:23:47,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-10-04 14:23:47,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-10-04 14:23:47,905 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2018-10-04 14:23:47,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:23:47,905 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-10-04 14:23:47,906 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-04 14:23:47,906 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-10-04 14:23:47,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-10-04 14:23:47,906 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:23:47,906 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-10-04 14:23:47,912 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:23:47,912 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:23:47,912 INFO L82 PathProgramCache]: Analyzing trace with hash 28844579, now seen corresponding path program 2 times [2018-10-04 14:23:47,913 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:23:47,913 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:23:47,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:23:47,914 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:23:47,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:23:47,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:23:48,014 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:23:48,014 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:23:48,015 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:23:48,030 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:23:48,065 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:23:48,065 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:23:48,069 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:23:48,125 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:23:48,145 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:23:48,145 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-04 14:23:48,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-04 14:23:48,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-04 14:23:48,146 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:23:48,147 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 5 states. [2018-10-04 14:23:48,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:23:48,198 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-10-04 14:23:48,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-04 14:23:48,198 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2018-10-04 14:23:48,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:23:48,199 INFO L225 Difference]: With dead ends: 9 [2018-10-04 14:23:48,199 INFO L226 Difference]: Without dead ends: 7 [2018-10-04 14:23:48,200 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 3 [2018-10-04 14:23:48,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-10-04 14:23:48,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-10-04 14:23:48,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-10-04 14:23:48,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-10-04 14:23:48,202 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2018-10-04 14:23:48,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:23:48,203 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-10-04 14:23:48,203 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-04 14:23:48,203 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-10-04 14:23:48,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-04 14:23:48,203 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:23:48,204 INFO L375 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2018-10-04 14:23:48,204 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:23:48,204 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:23:48,204 INFO L82 PathProgramCache]: Analyzing trace with hash 894183756, now seen corresponding path program 3 times [2018-10-04 14:23:48,205 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:23:48,205 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:23:48,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:23:48,206 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:23:48,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:23:48,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:23:48,306 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:23:48,307 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:23:48,307 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:23:48,320 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:23:48,353 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-10-04 14:23:48,354 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:23:48,355 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:23:48,409 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:23:48,429 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:23:48,429 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-04 14:23:48,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-04 14:23:48,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-04 14:23:48,430 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:23:48,430 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2018-10-04 14:23:48,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:23:48,509 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2018-10-04 14:23:48,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-04 14:23:48,509 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2018-10-04 14:23:48,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:23:48,510 INFO L225 Difference]: With dead ends: 10 [2018-10-04 14:23:48,510 INFO L226 Difference]: Without dead ends: 8 [2018-10-04 14:23:48,511 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 4 [2018-10-04 14:23:48,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-10-04 14:23:48,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-10-04 14:23:48,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-10-04 14:23:48,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-10-04 14:23:48,514 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2018-10-04 14:23:48,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:23:48,514 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-10-04 14:23:48,514 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-04 14:23:48,514 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-10-04 14:23:48,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-04 14:23:48,515 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:23:48,515 INFO L375 BasicCegarLoop]: trace histogram [4, 1, 1, 1] [2018-10-04 14:23:48,515 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:23:48,515 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:23:48,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1949894467, now seen corresponding path program 4 times [2018-10-04 14:23:48,516 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:23:48,516 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:23:48,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:23:48,517 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:23:48,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:23:48,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:23:48,666 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:23:48,666 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:23:48,666 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:23:48,674 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:23:48,704 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:23:48,704 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:23:48,706 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:23:48,902 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:23:48,927 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:23:48,928 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-04 14:23:48,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-04 14:23:48,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-04 14:23:48,929 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:23:48,929 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 7 states. [2018-10-04 14:23:48,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:23:48,957 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-10-04 14:23:48,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-04 14:23:48,958 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2018-10-04 14:23:48,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:23:48,958 INFO L225 Difference]: With dead ends: 11 [2018-10-04 14:23:48,958 INFO L226 Difference]: Without dead ends: 9 [2018-10-04 14:23:48,959 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 5 [2018-10-04 14:23:48,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-10-04 14:23:48,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-10-04 14:23:48,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-04 14:23:48,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-10-04 14:23:48,962 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-10-04 14:23:48,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:23:48,962 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-10-04 14:23:48,962 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-04 14:23:48,962 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-10-04 14:23:48,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-04 14:23:48,963 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:23:48,963 INFO L375 BasicCegarLoop]: trace histogram [5, 1, 1, 1] [2018-10-04 14:23:48,963 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:23:48,963 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:23:48,964 INFO L82 PathProgramCache]: Analyzing trace with hash 317188140, now seen corresponding path program 5 times [2018-10-04 14:23:48,964 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:23:48,964 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:23:48,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:23:48,965 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:23:48,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:23:48,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:23:49,158 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:23:49,159 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:23:49,159 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:23:49,168 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:23:49,235 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-10-04 14:23:49,235 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:23:49,237 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:23:49,341 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:23:49,362 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:23:49,363 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-04 14:23:49,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-04 14:23:49,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-04 14:23:49,363 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:23:49,364 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 8 states. [2018-10-04 14:23:49,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:23:49,393 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-10-04 14:23:49,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-04 14:23:49,394 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-10-04 14:23:49,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:23:49,395 INFO L225 Difference]: With dead ends: 12 [2018-10-04 14:23:49,395 INFO L226 Difference]: Without dead ends: 10 [2018-10-04 14:23:49,395 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 6 [2018-10-04 14:23:49,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-10-04 14:23:49,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-10-04 14:23:49,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-10-04 14:23:49,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-10-04 14:23:49,399 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-10-04 14:23:49,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:23:49,399 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-10-04 14:23:49,399 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-04 14:23:49,400 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-10-04 14:23:49,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-04 14:23:49,400 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:23:49,400 INFO L375 BasicCegarLoop]: trace histogram [6, 1, 1, 1] [2018-10-04 14:23:49,401 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:23:49,401 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:23:49,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1242899555, now seen corresponding path program 6 times [2018-10-04 14:23:49,401 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:23:49,401 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:23:49,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:23:49,402 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:23:49,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:23:49,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:23:49,570 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:23:49,570 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:23:49,570 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:23:49,585 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:23:49,604 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2018-10-04 14:23:49,604 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:23:49,608 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:23:49,705 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:23:49,732 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:23:49,732 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-04 14:23:49,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-04 14:23:49,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-04 14:23:49,733 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:23:49,733 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 9 states. [2018-10-04 14:23:49,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:23:49,900 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-10-04 14:23:49,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-04 14:23:49,901 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2018-10-04 14:23:49,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:23:49,902 INFO L225 Difference]: With dead ends: 13 [2018-10-04 14:23:49,902 INFO L226 Difference]: Without dead ends: 11 [2018-10-04 14:23:49,903 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 7 [2018-10-04 14:23:49,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-04 14:23:49,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-04 14:23:49,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-04 14:23:49,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-10-04 14:23:49,907 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-10-04 14:23:49,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:23:49,913 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-10-04 14:23:49,914 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-04 14:23:49,914 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-10-04 14:23:49,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-04 14:23:49,915 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:23:49,915 INFO L375 BasicCegarLoop]: trace histogram [7, 1, 1, 1] [2018-10-04 14:23:49,915 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:23:49,916 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:23:49,916 INFO L82 PathProgramCache]: Analyzing trace with hash -124817652, now seen corresponding path program 7 times [2018-10-04 14:23:49,916 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:23:49,916 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:23:49,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:23:49,919 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:23:49,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:23:49,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:23:50,275 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:23:50,276 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:23:50,276 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:23:50,283 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:23:50,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:23:50,303 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:23:50,398 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:23:50,419 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:23:50,419 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-04 14:23:50,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-04 14:23:50,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-04 14:23:50,420 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:23:50,420 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-10-04 14:23:50,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:23:50,450 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-10-04 14:23:50,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-04 14:23:50,451 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2018-10-04 14:23:50,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:23:50,451 INFO L225 Difference]: With dead ends: 14 [2018-10-04 14:23:50,452 INFO L226 Difference]: Without dead ends: 12 [2018-10-04 14:23:50,452 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 8 [2018-10-04 14:23:50,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-10-04 14:23:50,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-10-04 14:23:50,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-04 14:23:50,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-10-04 14:23:50,455 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-10-04 14:23:50,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:23:50,456 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-10-04 14:23:50,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-04 14:23:50,457 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-10-04 14:23:50,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-04 14:23:50,457 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:23:50,457 INFO L375 BasicCegarLoop]: trace histogram [8, 1, 1, 1] [2018-10-04 14:23:50,457 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:23:50,458 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:23:50,458 INFO L82 PathProgramCache]: Analyzing trace with hash 425621891, now seen corresponding path program 8 times [2018-10-04 14:23:50,458 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:23:50,458 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:23:50,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:23:50,459 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:23:50,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:23:50,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:23:50,786 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:23:50,786 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:23:50,786 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:23:50,798 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:23:50,826 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:23:50,827 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:23:50,830 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:23:50,939 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:23:50,966 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:23:50,966 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-04 14:23:50,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-04 14:23:50,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-04 14:23:50,967 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:23:50,967 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 11 states. [2018-10-04 14:23:51,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:23:51,012 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-10-04 14:23:51,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-04 14:23:51,017 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2018-10-04 14:23:51,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:23:51,017 INFO L225 Difference]: With dead ends: 15 [2018-10-04 14:23:51,017 INFO L226 Difference]: Without dead ends: 13 [2018-10-04 14:23:51,018 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 9 [2018-10-04 14:23:51,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-04 14:23:51,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-04 14:23:51,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-04 14:23:51,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-10-04 14:23:51,020 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-10-04 14:23:51,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:23:51,020 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-10-04 14:23:51,021 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-04 14:23:51,021 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-10-04 14:23:51,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-04 14:23:51,021 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:23:51,021 INFO L375 BasicCegarLoop]: trace histogram [9, 1, 1, 1] [2018-10-04 14:23:51,022 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:23:51,022 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:23:51,022 INFO L82 PathProgramCache]: Analyzing trace with hash 309378540, now seen corresponding path program 9 times [2018-10-04 14:23:51,022 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:23:51,022 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:23:51,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:23:51,023 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:23:51,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:23:51,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:23:51,244 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:23:51,245 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:23:51,245 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:23:51,253 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:23:51,282 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-10-04 14:23:51,282 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:23:51,285 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:23:51,394 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:23:51,417 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:23:51,418 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-10-04 14:23:51,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-04 14:23:51,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-04 14:23:51,419 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:23:51,419 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 12 states. [2018-10-04 14:23:51,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:23:51,498 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-10-04 14:23:51,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-04 14:23:51,499 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 12 [2018-10-04 14:23:51,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:23:51,499 INFO L225 Difference]: With dead ends: 16 [2018-10-04 14:23:51,500 INFO L226 Difference]: Without dead ends: 14 [2018-10-04 14:23:51,500 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 10 [2018-10-04 14:23:51,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-04 14:23:51,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-04 14:23:51,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-04 14:23:51,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-10-04 14:23:51,503 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-10-04 14:23:51,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:23:51,503 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-10-04 14:23:51,503 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-04 14:23:51,504 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-10-04 14:23:51,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-04 14:23:51,504 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:23:51,504 INFO L375 BasicCegarLoop]: trace histogram [10, 1, 1, 1] [2018-10-04 14:23:51,505 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:23:51,505 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:23:51,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1000801955, now seen corresponding path program 10 times [2018-10-04 14:23:51,505 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:23:51,505 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:23:51,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:23:51,506 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:23:51,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:23:51,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:23:51,716 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:23:51,716 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:23:51,717 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:23:51,726 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:23:51,747 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:23:51,747 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:23:51,749 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:23:51,815 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:23:51,835 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:23:51,836 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-10-04 14:23:51,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-04 14:23:51,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-04 14:23:51,836 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:23:51,837 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 13 states. [2018-10-04 14:23:51,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:23:51,872 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-10-04 14:23:51,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-04 14:23:51,878 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2018-10-04 14:23:51,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:23:51,879 INFO L225 Difference]: With dead ends: 17 [2018-10-04 14:23:51,879 INFO L226 Difference]: Without dead ends: 15 [2018-10-04 14:23:51,879 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 11 [2018-10-04 14:23:51,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-04 14:23:51,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-10-04 14:23:51,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-04 14:23:51,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-10-04 14:23:51,882 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2018-10-04 14:23:51,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:23:51,883 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-10-04 14:23:51,883 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-04 14:23:51,883 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-10-04 14:23:51,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-04 14:23:51,883 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:23:51,883 INFO L375 BasicCegarLoop]: trace histogram [11, 1, 1, 1] [2018-10-04 14:23:51,884 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:23:51,884 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:23:51,884 INFO L82 PathProgramCache]: Analyzing trace with hash 960091340, now seen corresponding path program 11 times [2018-10-04 14:23:51,884 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:23:51,884 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:23:51,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:23:51,885 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:23:51,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:23:51,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:23:52,143 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:23:52,143 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:23:52,144 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:23:52,153 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:23:52,180 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-10-04 14:23:52,181 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:23:52,183 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:23:52,400 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:23:52,435 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:23:52,435 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-10-04 14:23:52,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-04 14:23:52,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-04 14:23:52,436 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:23:52,437 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 14 states. [2018-10-04 14:23:52,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:23:52,525 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-10-04 14:23:52,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-04 14:23:52,526 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 14 [2018-10-04 14:23:52,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:23:52,527 INFO L225 Difference]: With dead ends: 18 [2018-10-04 14:23:52,527 INFO L226 Difference]: Without dead ends: 16 [2018-10-04 14:23:52,527 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.1s impTime 12 [2018-10-04 14:23:52,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-10-04 14:23:52,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-10-04 14:23:52,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-10-04 14:23:52,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-10-04 14:23:52,530 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2018-10-04 14:23:52,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:23:52,530 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-10-04 14:23:52,530 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-04 14:23:52,530 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-10-04 14:23:52,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-04 14:23:52,531 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:23:52,531 INFO L375 BasicCegarLoop]: trace histogram [12, 1, 1, 1] [2018-10-04 14:23:52,531 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:23:52,531 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:23:52,532 INFO L82 PathProgramCache]: Analyzing trace with hash -301937725, now seen corresponding path program 12 times [2018-10-04 14:23:52,532 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:23:52,532 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:23:52,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:23:52,533 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:23:52,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:23:52,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:23:52,728 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:23:52,728 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:23:52,728 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:23:52,736 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:23:52,848 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-04 14:23:52,849 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:23:52,852 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:23:53,051 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:23:53,075 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:23:53,076 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-10-04 14:23:53,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-04 14:23:53,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-04 14:23:53,076 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:23:53,077 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 15 states. [2018-10-04 14:23:53,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:23:53,139 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-10-04 14:23:53,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-04 14:23:53,139 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 15 [2018-10-04 14:23:53,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:23:53,140 INFO L225 Difference]: With dead ends: 19 [2018-10-04 14:23:53,140 INFO L226 Difference]: Without dead ends: 17 [2018-10-04 14:23:53,141 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 13 [2018-10-04 14:23:53,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-10-04 14:23:53,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-10-04 14:23:53,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-04 14:23:53,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-10-04 14:23:53,145 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2018-10-04 14:23:53,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:23:53,146 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-10-04 14:23:53,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-04 14:23:53,146 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-10-04 14:23:53,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-04 14:23:53,147 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:23:53,147 INFO L375 BasicCegarLoop]: trace histogram [13, 1, 1, 1] [2018-10-04 14:23:53,147 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:23:53,147 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:23:53,147 INFO L82 PathProgramCache]: Analyzing trace with hash -770133076, now seen corresponding path program 13 times [2018-10-04 14:23:53,147 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:23:53,148 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:23:53,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:23:53,148 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:23:53,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:23:53,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:23:53,345 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:23:53,346 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:23:53,346 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:23:53,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:23:53,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:23:53,380 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:23:53,468 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:23:53,492 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:23:53,492 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-10-04 14:23:53,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-04 14:23:53,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-04 14:23:53,493 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:23:53,493 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 16 states. [2018-10-04 14:23:53,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:23:53,695 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-10-04 14:23:53,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-04 14:23:53,695 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 16 [2018-10-04 14:23:53,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:23:53,696 INFO L225 Difference]: With dead ends: 20 [2018-10-04 14:23:53,697 INFO L226 Difference]: Without dead ends: 18 [2018-10-04 14:23:53,697 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 14 [2018-10-04 14:23:53,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-10-04 14:23:53,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-10-04 14:23:53,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-04 14:23:53,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-10-04 14:23:53,700 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2018-10-04 14:23:53,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:23:53,701 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-10-04 14:23:53,701 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-04 14:23:53,701 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-10-04 14:23:53,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-04 14:23:53,701 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:23:53,702 INFO L375 BasicCegarLoop]: trace histogram [14, 1, 1, 1] [2018-10-04 14:23:53,702 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:23:53,702 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:23:53,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1895680227, now seen corresponding path program 14 times [2018-10-04 14:23:53,702 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:23:53,702 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:23:53,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:23:53,703 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:23:53,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:23:53,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:23:54,035 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:23:54,035 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:23:54,035 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:23:54,044 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:23:54,068 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:23:54,068 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:23:54,070 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:23:54,185 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:23:54,207 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:23:54,207 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-10-04 14:23:54,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-04 14:23:54,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-04 14:23:54,208 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:23:54,208 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 17 states. [2018-10-04 14:23:54,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:23:54,257 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-10-04 14:23:54,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-04 14:23:54,257 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 17 [2018-10-04 14:23:54,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:23:54,258 INFO L225 Difference]: With dead ends: 21 [2018-10-04 14:23:54,258 INFO L226 Difference]: Without dead ends: 19 [2018-10-04 14:23:54,258 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 15 [2018-10-04 14:23:54,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-04 14:23:54,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-04 14:23:54,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-04 14:23:54,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-10-04 14:23:54,262 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2018-10-04 14:23:54,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:23:54,262 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-10-04 14:23:54,262 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-04 14:23:54,262 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-10-04 14:23:54,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-04 14:23:54,263 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:23:54,263 INFO L375 BasicCegarLoop]: trace histogram [15, 1, 1, 1] [2018-10-04 14:23:54,263 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:23:54,264 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:23:54,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1363453300, now seen corresponding path program 15 times [2018-10-04 14:23:54,264 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:23:54,264 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:23:54,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:23:54,265 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:23:54,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:23:54,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:23:54,827 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:23:54,828 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:23:54,828 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:23:54,836 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:23:54,879 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-10-04 14:23:54,880 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:23:54,882 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:23:55,277 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:23:55,301 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:23:55,301 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-10-04 14:23:55,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-04 14:23:55,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-04 14:23:55,302 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:23:55,302 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 18 states. [2018-10-04 14:23:55,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:23:55,340 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-10-04 14:23:55,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-04 14:23:55,340 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 18 [2018-10-04 14:23:55,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:23:55,341 INFO L225 Difference]: With dead ends: 22 [2018-10-04 14:23:55,342 INFO L226 Difference]: Without dead ends: 20 [2018-10-04 14:23:55,342 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.3s impTime 16 [2018-10-04 14:23:55,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-10-04 14:23:55,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-10-04 14:23:55,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-04 14:23:55,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-10-04 14:23:55,345 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2018-10-04 14:23:55,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:23:55,346 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-10-04 14:23:55,346 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-04 14:23:55,346 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-10-04 14:23:55,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-04 14:23:55,346 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:23:55,346 INFO L375 BasicCegarLoop]: trace histogram [16, 1, 1, 1] [2018-10-04 14:23:55,347 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:23:55,347 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:23:55,347 INFO L82 PathProgramCache]: Analyzing trace with hash 682622467, now seen corresponding path program 16 times [2018-10-04 14:23:55,347 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:23:55,347 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:23:55,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:23:55,348 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:23:55,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:23:55,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:23:55,778 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:23:55,778 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:23:55,779 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:23:55,786 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:23:55,809 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:23:55,809 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:23:55,811 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:23:55,884 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:23:55,905 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:23:55,905 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-10-04 14:23:55,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-04 14:23:55,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-04 14:23:55,906 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:23:55,906 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 19 states. [2018-10-04 14:23:55,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:23:55,984 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-10-04 14:23:55,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-04 14:23:55,986 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 19 [2018-10-04 14:23:55,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:23:55,986 INFO L225 Difference]: With dead ends: 23 [2018-10-04 14:23:55,986 INFO L226 Difference]: Without dead ends: 21 [2018-10-04 14:23:55,987 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.3s impTime 17 [2018-10-04 14:23:55,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-04 14:23:55,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-04 14:23:55,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-04 14:23:55,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-10-04 14:23:55,991 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 19 [2018-10-04 14:23:55,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:23:55,991 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-10-04 14:23:55,991 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-04 14:23:55,991 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-10-04 14:23:55,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-04 14:23:55,992 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:23:55,992 INFO L375 BasicCegarLoop]: trace histogram [17, 1, 1, 1] [2018-10-04 14:23:55,992 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:23:55,992 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:23:55,993 INFO L82 PathProgramCache]: Analyzing trace with hash -313538196, now seen corresponding path program 17 times [2018-10-04 14:23:55,993 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:23:55,993 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:23:55,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:23:55,994 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:23:55,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:23:56,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:23:56,537 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:23:56,538 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:23:56,538 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:23:56,548 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:23:56,613 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2018-10-04 14:23:56,613 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:23:56,617 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:23:56,709 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:23:56,730 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:23:56,731 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-10-04 14:23:56,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-04 14:23:56,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-04 14:23:56,731 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:23:56,731 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 20 states. [2018-10-04 14:23:56,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:23:56,800 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-10-04 14:23:56,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-04 14:23:56,801 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 20 [2018-10-04 14:23:56,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:23:56,801 INFO L225 Difference]: With dead ends: 24 [2018-10-04 14:23:56,802 INFO L226 Difference]: Without dead ends: 22 [2018-10-04 14:23:56,802 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 18 [2018-10-04 14:23:56,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-10-04 14:23:56,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-10-04 14:23:56,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-04 14:23:56,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-10-04 14:23:56,807 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 20 [2018-10-04 14:23:56,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:23:56,807 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-10-04 14:23:56,807 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-04 14:23:56,807 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-10-04 14:23:56,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-04 14:23:56,808 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:23:56,808 INFO L375 BasicCegarLoop]: trace histogram [18, 1, 1, 1] [2018-10-04 14:23:56,808 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:23:56,808 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:23:56,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1129747677, now seen corresponding path program 18 times [2018-10-04 14:23:56,809 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:23:56,809 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:23:56,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:23:56,810 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:23:56,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:23:56,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:23:57,147 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:23:57,148 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:23:57,148 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:23:57,158 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:23:57,213 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2018-10-04 14:23:57,213 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:23:57,216 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:23:57,463 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:23:57,498 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:23:57,499 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-10-04 14:23:57,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-04 14:23:57,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-04 14:23:57,500 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:23:57,500 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 21 states. [2018-10-04 14:23:57,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:23:57,829 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-10-04 14:23:57,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-04 14:23:57,830 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 21 [2018-10-04 14:23:57,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:23:57,830 INFO L225 Difference]: With dead ends: 25 [2018-10-04 14:23:57,831 INFO L226 Difference]: Without dead ends: 23 [2018-10-04 14:23:57,831 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.2s impTime 19 [2018-10-04 14:23:57,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-04 14:23:57,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-04 14:23:57,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-04 14:23:57,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-10-04 14:23:57,835 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 21 [2018-10-04 14:23:57,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:23:57,835 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-10-04 14:23:57,835 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-04 14:23:57,836 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-10-04 14:23:57,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-04 14:23:57,836 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:23:57,836 INFO L375 BasicCegarLoop]: trace histogram [19, 1, 1, 1] [2018-10-04 14:23:57,837 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:23:57,837 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:23:57,837 INFO L82 PathProgramCache]: Analyzing trace with hash -662437812, now seen corresponding path program 19 times [2018-10-04 14:23:57,837 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:23:57,837 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:23:57,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:23:57,838 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:23:57,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:23:57,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:23:59,076 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:23:59,077 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:23:59,077 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:23:59,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:23:59,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:23:59,119 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:23:59,287 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:23:59,324 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:23:59,324 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-10-04 14:23:59,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-04 14:23:59,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-04 14:23:59,325 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:23:59,325 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 22 states. [2018-10-04 14:23:59,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:23:59,527 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-10-04 14:23:59,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-04 14:23:59,528 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 22 [2018-10-04 14:23:59,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:23:59,529 INFO L225 Difference]: With dead ends: 26 [2018-10-04 14:23:59,529 INFO L226 Difference]: Without dead ends: 24 [2018-10-04 14:23:59,530 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.9s impTime 20 [2018-10-04 14:23:59,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-10-04 14:23:59,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-10-04 14:23:59,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-04 14:23:59,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-10-04 14:23:59,533 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 22 [2018-10-04 14:23:59,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:23:59,533 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-10-04 14:23:59,533 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-04 14:23:59,533 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-10-04 14:23:59,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-04 14:23:59,534 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:23:59,534 INFO L375 BasicCegarLoop]: trace histogram [20, 1, 1, 1] [2018-10-04 14:23:59,534 INFO L423 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:23:59,535 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:23:59,535 INFO L82 PathProgramCache]: Analyzing trace with hash 939266115, now seen corresponding path program 20 times [2018-10-04 14:23:59,535 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:23:59,535 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:23:59,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:23:59,536 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:23:59,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:23:59,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:23:59,934 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:23:59,934 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:23:59,934 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:23:59,943 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:23:59,971 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:23:59,971 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:23:59,974 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:00,077 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:00,103 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:24:00,103 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-10-04 14:24:00,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-04 14:24:00,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-04 14:24:00,104 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:00,104 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 23 states. [2018-10-04 14:24:00,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:00,150 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-10-04 14:24:00,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-04 14:24:00,151 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 23 [2018-10-04 14:24:00,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:00,152 INFO L225 Difference]: With dead ends: 27 [2018-10-04 14:24:00,152 INFO L226 Difference]: Without dead ends: 25 [2018-10-04 14:24:00,152 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 21 [2018-10-04 14:24:00,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-04 14:24:00,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-10-04 14:24:00,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-04 14:24:00,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-10-04 14:24:00,155 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 23 [2018-10-04 14:24:00,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:00,155 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-10-04 14:24:00,155 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-04 14:24:00,156 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-10-04 14:24:00,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-04 14:24:00,156 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:00,156 INFO L375 BasicCegarLoop]: trace histogram [21, 1, 1, 1] [2018-10-04 14:24:00,157 INFO L423 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:00,157 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:00,157 INFO L82 PathProgramCache]: Analyzing trace with hash -947519700, now seen corresponding path program 21 times [2018-10-04 14:24:00,157 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:00,157 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:00,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:00,158 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:00,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:00,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:00,591 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:00,592 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:24:00,592 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:24:00,600 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:24:00,639 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2018-10-04 14:24:00,640 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:00,642 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:00,764 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:00,784 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:24:00,784 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-10-04 14:24:00,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-04 14:24:00,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-04 14:24:00,785 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:00,785 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 24 states. [2018-10-04 14:24:00,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:00,837 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-10-04 14:24:00,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-04 14:24:00,840 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 24 [2018-10-04 14:24:00,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:00,840 INFO L225 Difference]: With dead ends: 28 [2018-10-04 14:24:00,840 INFO L226 Difference]: Without dead ends: 26 [2018-10-04 14:24:00,840 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.2s impTime 22 [2018-10-04 14:24:00,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-10-04 14:24:00,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-10-04 14:24:00,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-04 14:24:00,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-10-04 14:24:00,844 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 24 [2018-10-04 14:24:00,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:00,844 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-10-04 14:24:00,844 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-04 14:24:00,844 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-10-04 14:24:00,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-04 14:24:00,845 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:00,845 INFO L375 BasicCegarLoop]: trace histogram [22, 1, 1, 1] [2018-10-04 14:24:00,845 INFO L423 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:00,845 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:00,845 INFO L82 PathProgramCache]: Analyzing trace with hash 691662179, now seen corresponding path program 22 times [2018-10-04 14:24:00,845 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:00,846 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:00,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:00,846 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:00,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:00,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:01,111 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:01,112 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:24:01,112 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:24:01,122 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:24:01,158 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:24:01,158 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:01,161 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:01,456 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:01,498 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:24:01,498 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-10-04 14:24:01,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-04 14:24:01,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-04 14:24:01,499 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:01,499 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 25 states. [2018-10-04 14:24:01,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:01,987 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-10-04 14:24:01,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-04 14:24:01,988 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 25 [2018-10-04 14:24:01,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:01,988 INFO L225 Difference]: With dead ends: 29 [2018-10-04 14:24:01,988 INFO L226 Difference]: Without dead ends: 27 [2018-10-04 14:24:01,989 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.1s impTime 23 [2018-10-04 14:24:01,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-04 14:24:01,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-10-04 14:24:01,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-10-04 14:24:01,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-10-04 14:24:01,995 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 25 [2018-10-04 14:24:01,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:01,995 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-10-04 14:24:01,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-04 14:24:01,996 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-10-04 14:24:01,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-04 14:24:01,996 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:01,996 INFO L375 BasicCegarLoop]: trace histogram [23, 1, 1, 1] [2018-10-04 14:24:02,001 INFO L423 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:02,001 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:02,001 INFO L82 PathProgramCache]: Analyzing trace with hash -33307124, now seen corresponding path program 23 times [2018-10-04 14:24:02,002 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:02,002 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:02,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:02,003 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:02,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:02,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:02,661 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:02,662 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:24:02,662 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:24:02,672 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:24:02,714 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2018-10-04 14:24:02,714 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:02,717 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:02,823 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:02,844 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:24:02,844 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-10-04 14:24:02,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-04 14:24:02,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-04 14:24:02,845 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:02,845 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 26 states. [2018-10-04 14:24:02,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:02,879 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2018-10-04 14:24:02,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-04 14:24:02,880 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 26 [2018-10-04 14:24:02,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:02,881 INFO L225 Difference]: With dead ends: 30 [2018-10-04 14:24:02,881 INFO L226 Difference]: Without dead ends: 28 [2018-10-04 14:24:02,882 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.3s impTime 24 [2018-10-04 14:24:02,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-10-04 14:24:02,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-10-04 14:24:02,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-04 14:24:02,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-10-04 14:24:02,887 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 26 [2018-10-04 14:24:02,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:02,888 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-10-04 14:24:02,890 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-04 14:24:02,891 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-10-04 14:24:02,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-04 14:24:02,891 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:02,891 INFO L375 BasicCegarLoop]: trace histogram [24, 1, 1, 1] [2018-10-04 14:24:02,892 INFO L423 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:02,893 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:02,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1032519037, now seen corresponding path program 24 times [2018-10-04 14:24:02,894 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:02,894 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:02,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:02,895 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:02,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:02,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:03,202 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:03,202 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:24:03,202 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:24:03,210 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:24:03,252 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-10-04 14:24:03,252 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:03,255 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:03,344 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:03,365 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:24:03,365 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-10-04 14:24:03,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-04 14:24:03,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-04 14:24:03,366 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:03,366 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 27 states. [2018-10-04 14:24:03,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:03,481 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-10-04 14:24:03,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-04 14:24:03,483 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 27 [2018-10-04 14:24:03,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:03,483 INFO L225 Difference]: With dead ends: 31 [2018-10-04 14:24:03,483 INFO L226 Difference]: Without dead ends: 29 [2018-10-04 14:24:03,484 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 25 [2018-10-04 14:24:03,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-04 14:24:03,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-10-04 14:24:03,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-10-04 14:24:03,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-10-04 14:24:03,487 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 27 [2018-10-04 14:24:03,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:03,487 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-10-04 14:24:03,488 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-04 14:24:03,488 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-10-04 14:24:03,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-04 14:24:03,488 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:03,488 INFO L375 BasicCegarLoop]: trace histogram [25, 1, 1, 1] [2018-10-04 14:24:03,489 INFO L423 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:03,489 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:03,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1943317268, now seen corresponding path program 25 times [2018-10-04 14:24:03,489 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:03,489 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:03,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:03,490 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:03,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:03,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:03,926 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:03,927 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:24:03,927 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:24:03,934 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:24:03,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:03,973 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:04,055 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:04,076 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:24:04,077 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-10-04 14:24:04,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-04 14:24:04,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-04 14:24:04,077 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:04,077 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 28 states. [2018-10-04 14:24:04,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:04,160 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2018-10-04 14:24:04,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-04 14:24:04,161 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 28 [2018-10-04 14:24:04,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:04,161 INFO L225 Difference]: With dead ends: 32 [2018-10-04 14:24:04,161 INFO L226 Difference]: Without dead ends: 30 [2018-10-04 14:24:04,162 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.3s impTime 26 [2018-10-04 14:24:04,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-10-04 14:24:04,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-10-04 14:24:04,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-04 14:24:04,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-10-04 14:24:04,164 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 28 [2018-10-04 14:24:04,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:04,165 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-10-04 14:24:04,165 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-04 14:24:04,165 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-10-04 14:24:04,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-04 14:24:04,166 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:04,166 INFO L375 BasicCegarLoop]: trace histogram [26, 1, 1, 1] [2018-10-04 14:24:04,166 INFO L423 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:04,166 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:04,166 INFO L82 PathProgramCache]: Analyzing trace with hash -113291357, now seen corresponding path program 26 times [2018-10-04 14:24:04,166 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:04,166 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:04,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:04,167 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:24:04,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:04,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:04,776 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:04,776 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:24:04,776 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:24:04,784 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:24:04,829 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:24:04,829 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:04,833 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:04,955 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:04,976 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:24:04,976 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-10-04 14:24:04,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-04 14:24:04,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-04 14:24:04,977 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:04,977 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 29 states. [2018-10-04 14:24:05,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:05,086 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-10-04 14:24:05,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-04 14:24:05,087 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 29 [2018-10-04 14:24:05,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:05,088 INFO L225 Difference]: With dead ends: 33 [2018-10-04 14:24:05,088 INFO L226 Difference]: Without dead ends: 31 [2018-10-04 14:24:05,089 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.4s impTime 27 [2018-10-04 14:24:05,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-04 14:24:05,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-04 14:24:05,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-04 14:24:05,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-10-04 14:24:05,092 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 29 [2018-10-04 14:24:05,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:05,092 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-10-04 14:24:05,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-04 14:24:05,092 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-10-04 14:24:05,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-04 14:24:05,093 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:05,093 INFO L375 BasicCegarLoop]: trace histogram [27, 1, 1, 1] [2018-10-04 14:24:05,093 INFO L423 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:05,093 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:05,094 INFO L82 PathProgramCache]: Analyzing trace with hash 782937036, now seen corresponding path program 27 times [2018-10-04 14:24:05,094 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:05,094 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:05,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:05,095 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:05,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:05,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:05,611 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:05,612 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:24:05,612 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:24:05,620 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:24:05,693 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2018-10-04 14:24:05,694 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:05,697 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:05,771 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:05,792 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:24:05,792 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-10-04 14:24:05,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-04 14:24:05,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-04 14:24:05,793 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:05,793 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 30 states. [2018-10-04 14:24:05,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:05,842 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-10-04 14:24:05,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-04 14:24:05,843 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 30 [2018-10-04 14:24:05,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:05,843 INFO L225 Difference]: With dead ends: 34 [2018-10-04 14:24:05,843 INFO L226 Difference]: Without dead ends: 32 [2018-10-04 14:24:05,844 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.4s impTime 28 [2018-10-04 14:24:05,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-10-04 14:24:05,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-10-04 14:24:05,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-04 14:24:05,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-10-04 14:24:05,847 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 30 [2018-10-04 14:24:05,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:05,848 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-10-04 14:24:05,848 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-04 14:24:05,848 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-10-04 14:24:05,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-04 14:24:05,848 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:05,849 INFO L375 BasicCegarLoop]: trace histogram [28, 1, 1, 1] [2018-10-04 14:24:05,849 INFO L423 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:05,849 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:05,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1498753853, now seen corresponding path program 28 times [2018-10-04 14:24:05,849 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:05,849 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:05,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:05,850 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:05,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:05,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:06,305 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:06,305 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:24:06,305 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:24:06,317 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:24:06,359 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:24:06,359 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:06,362 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:06,532 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:06,553 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:24:06,553 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-10-04 14:24:06,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-04 14:24:06,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-04 14:24:06,554 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:06,554 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 31 states. [2018-10-04 14:24:06,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:06,603 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-10-04 14:24:06,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-04 14:24:06,603 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 31 [2018-10-04 14:24:06,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:06,604 INFO L225 Difference]: With dead ends: 35 [2018-10-04 14:24:06,604 INFO L226 Difference]: Without dead ends: 33 [2018-10-04 14:24:06,604 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.2s impTime 29 [2018-10-04 14:24:06,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-04 14:24:06,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-10-04 14:24:06,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-04 14:24:06,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-10-04 14:24:06,608 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 31 [2018-10-04 14:24:06,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:06,608 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-10-04 14:24:06,609 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-04 14:24:06,609 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-10-04 14:24:06,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-04 14:24:06,609 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:06,609 INFO L375 BasicCegarLoop]: trace histogram [29, 1, 1, 1] [2018-10-04 14:24:06,610 INFO L423 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:06,610 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:06,610 INFO L82 PathProgramCache]: Analyzing trace with hash 783272620, now seen corresponding path program 29 times [2018-10-04 14:24:06,610 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:06,610 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:06,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:06,611 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:06,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:06,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:07,187 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:07,188 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:24:07,188 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:24:07,195 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:24:07,258 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2018-10-04 14:24:07,259 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:07,263 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:07,351 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:07,371 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:24:07,372 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-10-04 14:24:07,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-04 14:24:07,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-04 14:24:07,372 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:07,373 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 32 states. [2018-10-04 14:24:07,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:07,437 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2018-10-04 14:24:07,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-04 14:24:07,438 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 32 [2018-10-04 14:24:07,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:07,438 INFO L225 Difference]: With dead ends: 36 [2018-10-04 14:24:07,438 INFO L226 Difference]: Without dead ends: 34 [2018-10-04 14:24:07,438 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.4s impTime 30 [2018-10-04 14:24:07,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-10-04 14:24:07,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-10-04 14:24:07,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-04 14:24:07,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-10-04 14:24:07,441 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 32 [2018-10-04 14:24:07,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:07,442 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2018-10-04 14:24:07,442 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-04 14:24:07,442 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-10-04 14:24:07,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-04 14:24:07,443 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:07,443 INFO L375 BasicCegarLoop]: trace histogram [30, 1, 1, 1] [2018-10-04 14:24:07,443 INFO L423 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:07,443 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:07,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1488350749, now seen corresponding path program 30 times [2018-10-04 14:24:07,443 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:07,443 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:07,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:07,444 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:07,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:07,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:07,952 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:07,953 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:24:07,953 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:24:07,963 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:24:08,048 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2018-10-04 14:24:08,048 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:08,052 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:08,139 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:08,160 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:24:08,161 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-10-04 14:24:08,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-04 14:24:08,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-04 14:24:08,161 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:08,161 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 33 states. [2018-10-04 14:24:08,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:08,298 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-10-04 14:24:08,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-04 14:24:08,298 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 33 [2018-10-04 14:24:08,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:08,299 INFO L225 Difference]: With dead ends: 37 [2018-10-04 14:24:08,299 INFO L226 Difference]: Without dead ends: 35 [2018-10-04 14:24:08,299 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 31 [2018-10-04 14:24:08,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-04 14:24:08,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-10-04 14:24:08,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-04 14:24:08,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-10-04 14:24:08,302 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 33 [2018-10-04 14:24:08,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:08,302 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-10-04 14:24:08,302 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-04 14:24:08,302 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-10-04 14:24:08,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-04 14:24:08,303 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:08,303 INFO L375 BasicCegarLoop]: trace histogram [31, 1, 1, 1] [2018-10-04 14:24:08,303 INFO L423 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:08,303 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:08,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1105768844, now seen corresponding path program 31 times [2018-10-04 14:24:08,303 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:08,303 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:08,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:08,305 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:08,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:08,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:08,734 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:08,735 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:24:08,735 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:24:08,742 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:24:08,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:08,793 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:08,893 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:08,913 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:24:08,913 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-10-04 14:24:08,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-04 14:24:08,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-04 14:24:08,914 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:08,914 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 34 states. [2018-10-04 14:24:08,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:08,976 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-10-04 14:24:08,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-04 14:24:08,976 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 34 [2018-10-04 14:24:08,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:08,977 INFO L225 Difference]: With dead ends: 38 [2018-10-04 14:24:08,977 INFO L226 Difference]: Without dead ends: 36 [2018-10-04 14:24:08,978 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 32 [2018-10-04 14:24:08,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-10-04 14:24:08,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-10-04 14:24:08,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-10-04 14:24:08,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-10-04 14:24:08,982 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 34 [2018-10-04 14:24:08,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:08,982 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-10-04 14:24:08,982 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-04 14:24:08,982 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-10-04 14:24:08,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-04 14:24:08,983 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:08,983 INFO L375 BasicCegarLoop]: trace histogram [32, 1, 1, 1] [2018-10-04 14:24:08,983 INFO L423 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:08,983 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:08,983 INFO L82 PathProgramCache]: Analyzing trace with hash -80902397, now seen corresponding path program 32 times [2018-10-04 14:24:08,983 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:08,983 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:08,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:08,984 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:24:08,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:08,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:10,089 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:10,089 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:24:10,089 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:24:10,096 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:24:10,143 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:24:10,143 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:10,146 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:10,448 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:10,471 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:24:10,471 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-10-04 14:24:10,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-04 14:24:10,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-04 14:24:10,472 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:10,472 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 35 states. [2018-10-04 14:24:10,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:10,534 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-10-04 14:24:10,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-04 14:24:10,535 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 35 [2018-10-04 14:24:10,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:10,536 INFO L225 Difference]: With dead ends: 39 [2018-10-04 14:24:10,536 INFO L226 Difference]: Without dead ends: 37 [2018-10-04 14:24:10,536 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.8s impTime 33 [2018-10-04 14:24:10,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-04 14:24:10,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-10-04 14:24:10,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-04 14:24:10,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-10-04 14:24:10,539 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 35 [2018-10-04 14:24:10,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:10,540 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-10-04 14:24:10,540 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-04 14:24:10,540 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-10-04 14:24:10,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-04 14:24:10,540 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:10,540 INFO L375 BasicCegarLoop]: trace histogram [33, 1, 1, 1] [2018-10-04 14:24:10,541 INFO L423 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:10,541 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:10,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1786994796, now seen corresponding path program 33 times [2018-10-04 14:24:10,541 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:10,541 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:10,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:10,542 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:10,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:11,130 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:11,130 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:24:11,130 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:24:11,137 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:24:11,197 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2018-10-04 14:24:11,197 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:11,201 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:11,336 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:11,357 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:24:11,357 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-10-04 14:24:11,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-04 14:24:11,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-04 14:24:11,358 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:11,358 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 36 states. [2018-10-04 14:24:11,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:11,402 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2018-10-04 14:24:11,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-04 14:24:11,402 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 36 [2018-10-04 14:24:11,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:11,403 INFO L225 Difference]: With dead ends: 40 [2018-10-04 14:24:11,403 INFO L226 Difference]: Without dead ends: 38 [2018-10-04 14:24:11,403 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.4s impTime 34 [2018-10-04 14:24:11,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-10-04 14:24:11,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-10-04 14:24:11,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-10-04 14:24:11,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2018-10-04 14:24:11,406 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 36 [2018-10-04 14:24:11,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:11,407 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2018-10-04 14:24:11,407 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-04 14:24:11,407 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2018-10-04 14:24:11,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-04 14:24:11,407 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:11,407 INFO L375 BasicCegarLoop]: trace histogram [34, 1, 1, 1] [2018-10-04 14:24:11,407 INFO L423 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:11,408 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:11,408 INFO L82 PathProgramCache]: Analyzing trace with hash -437734365, now seen corresponding path program 34 times [2018-10-04 14:24:11,408 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:11,408 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:11,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:11,408 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:11,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:11,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:12,140 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:12,141 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:24:12,141 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:24:12,150 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:24:12,200 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:24:12,200 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:12,203 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:12,504 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:12,524 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:24:12,524 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-10-04 14:24:12,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-04 14:24:12,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-04 14:24:12,525 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:12,525 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 37 states. [2018-10-04 14:24:12,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:12,589 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-10-04 14:24:12,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-04 14:24:12,590 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 37 [2018-10-04 14:24:12,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:12,590 INFO L225 Difference]: With dead ends: 41 [2018-10-04 14:24:12,590 INFO L226 Difference]: Without dead ends: 39 [2018-10-04 14:24:12,591 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.5s impTime 35 [2018-10-04 14:24:12,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-04 14:24:12,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-10-04 14:24:12,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-04 14:24:12,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-10-04 14:24:12,594 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 37 [2018-10-04 14:24:12,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:12,595 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-10-04 14:24:12,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-04 14:24:12,595 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-10-04 14:24:12,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-04 14:24:12,595 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:12,595 INFO L375 BasicCegarLoop]: trace histogram [35, 1, 1, 1] [2018-10-04 14:24:12,596 INFO L423 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:12,596 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:12,596 INFO L82 PathProgramCache]: Analyzing trace with hash -684861620, now seen corresponding path program 35 times [2018-10-04 14:24:12,596 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:12,596 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:12,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:12,597 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:12,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:12,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:13,525 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:13,526 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:24:13,526 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:24:13,534 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:24:13,608 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2018-10-04 14:24:13,608 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:13,612 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:13,785 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:13,806 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:24:13,806 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-10-04 14:24:13,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-04 14:24:13,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-04 14:24:13,807 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:13,807 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 38 states. [2018-10-04 14:24:13,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:13,896 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2018-10-04 14:24:13,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-04 14:24:13,896 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 38 [2018-10-04 14:24:13,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:13,897 INFO L225 Difference]: With dead ends: 42 [2018-10-04 14:24:13,897 INFO L226 Difference]: Without dead ends: 40 [2018-10-04 14:24:13,897 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.7s impTime 36 [2018-10-04 14:24:13,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-10-04 14:24:13,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-10-04 14:24:13,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-10-04 14:24:13,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2018-10-04 14:24:13,901 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 38 [2018-10-04 14:24:13,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:13,901 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2018-10-04 14:24:13,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-04 14:24:13,901 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2018-10-04 14:24:13,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-04 14:24:13,901 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:13,901 INFO L375 BasicCegarLoop]: trace histogram [36, 1, 1, 1] [2018-10-04 14:24:13,901 INFO L423 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:13,902 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:13,902 INFO L82 PathProgramCache]: Analyzing trace with hash 244128067, now seen corresponding path program 36 times [2018-10-04 14:24:13,902 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:13,902 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:13,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:13,903 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:13,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:13,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:14,992 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:14,992 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:24:14,992 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:24:15,000 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:24:15,083 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-10-04 14:24:15,083 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:15,088 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:15,270 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:15,291 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:24:15,292 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-10-04 14:24:15,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-04 14:24:15,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-04 14:24:15,292 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:15,292 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 39 states. [2018-10-04 14:24:15,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:15,362 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-10-04 14:24:15,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-04 14:24:15,362 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 39 [2018-10-04 14:24:15,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:15,363 INFO L225 Difference]: With dead ends: 43 [2018-10-04 14:24:15,363 INFO L226 Difference]: Without dead ends: 41 [2018-10-04 14:24:15,363 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.8s impTime 37 [2018-10-04 14:24:15,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-04 14:24:15,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-10-04 14:24:15,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-04 14:24:15,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-10-04 14:24:15,365 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 39 [2018-10-04 14:24:15,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:15,365 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-10-04 14:24:15,366 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-04 14:24:15,366 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-10-04 14:24:15,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-04 14:24:15,366 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:15,366 INFO L375 BasicCegarLoop]: trace histogram [37, 1, 1, 1] [2018-10-04 14:24:15,366 INFO L423 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:15,367 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:15,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1021962708, now seen corresponding path program 37 times [2018-10-04 14:24:15,367 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:15,367 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:15,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:15,368 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:15,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:15,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:16,363 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:16,364 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:24:16,364 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:24:16,371 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:24:16,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:16,426 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:16,536 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:16,556 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:24:16,556 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-10-04 14:24:16,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-04 14:24:16,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-04 14:24:16,557 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:16,557 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 40 states. [2018-10-04 14:24:16,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:16,681 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2018-10-04 14:24:16,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-04 14:24:16,682 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 40 [2018-10-04 14:24:16,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:16,683 INFO L225 Difference]: With dead ends: 44 [2018-10-04 14:24:16,683 INFO L226 Difference]: Without dead ends: 42 [2018-10-04 14:24:16,683 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.8s impTime 38 [2018-10-04 14:24:16,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-10-04 14:24:16,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-10-04 14:24:16,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-10-04 14:24:16,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2018-10-04 14:24:16,685 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 40 [2018-10-04 14:24:16,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:16,685 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2018-10-04 14:24:16,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-04 14:24:16,685 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2018-10-04 14:24:16,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-04 14:24:16,686 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:16,686 INFO L375 BasicCegarLoop]: trace histogram [38, 1, 1, 1] [2018-10-04 14:24:16,686 INFO L423 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:16,686 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:16,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1616071069, now seen corresponding path program 38 times [2018-10-04 14:24:16,686 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:16,686 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:16,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:16,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:24:16,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:16,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:17,433 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:17,433 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:24:17,433 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:24:17,440 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:24:17,493 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:24:17,494 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:17,499 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:17,920 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:17,940 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:24:17,941 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-10-04 14:24:17,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-04 14:24:17,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-04 14:24:17,941 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:17,941 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 41 states. [2018-10-04 14:24:18,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:18,012 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-10-04 14:24:18,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-04 14:24:18,013 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 41 [2018-10-04 14:24:18,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:18,013 INFO L225 Difference]: With dead ends: 45 [2018-10-04 14:24:18,014 INFO L226 Difference]: Without dead ends: 43 [2018-10-04 14:24:18,014 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.5s impTime 39 [2018-10-04 14:24:18,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-04 14:24:18,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-10-04 14:24:18,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-04 14:24:18,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-10-04 14:24:18,017 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 41 [2018-10-04 14:24:18,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:18,018 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-10-04 14:24:18,018 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-04 14:24:18,018 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-10-04 14:24:18,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-04 14:24:18,018 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:18,018 INFO L375 BasicCegarLoop]: trace histogram [39, 1, 1, 1] [2018-10-04 14:24:18,019 INFO L423 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:18,019 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:18,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1441406220, now seen corresponding path program 39 times [2018-10-04 14:24:18,019 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:18,019 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:18,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:18,020 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:18,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:18,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:19,402 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:19,403 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:24:19,403 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:24:19,411 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:24:19,500 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2018-10-04 14:24:19,500 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:19,505 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:19,759 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:19,779 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:24:19,780 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-10-04 14:24:19,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-04 14:24:19,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-04 14:24:19,780 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:19,780 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 42 states. [2018-10-04 14:24:19,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:19,918 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2018-10-04 14:24:19,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-04 14:24:19,918 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 42 [2018-10-04 14:24:19,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:19,919 INFO L225 Difference]: With dead ends: 46 [2018-10-04 14:24:19,919 INFO L226 Difference]: Without dead ends: 44 [2018-10-04 14:24:19,919 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.0s impTime 40 [2018-10-04 14:24:19,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-10-04 14:24:19,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-10-04 14:24:19,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-10-04 14:24:19,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2018-10-04 14:24:19,921 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 42 [2018-10-04 14:24:19,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:19,921 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2018-10-04 14:24:19,921 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-04 14:24:19,921 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2018-10-04 14:24:19,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-04 14:24:19,921 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:19,921 INFO L375 BasicCegarLoop]: trace histogram [40, 1, 1, 1] [2018-10-04 14:24:19,922 INFO L423 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:19,922 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:19,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1733921667, now seen corresponding path program 40 times [2018-10-04 14:24:19,922 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:19,922 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:19,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:19,923 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:19,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:19,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:21,473 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:21,473 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:24:21,473 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:24:21,482 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:24:21,538 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:24:21,539 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:21,543 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:21,758 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:21,778 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:24:21,778 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-10-04 14:24:21,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-04 14:24:21,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-04 14:24:21,779 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:21,779 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 43 states. [2018-10-04 14:24:21,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:21,892 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-10-04 14:24:21,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-04 14:24:21,892 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 43 [2018-10-04 14:24:21,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:21,893 INFO L225 Difference]: With dead ends: 47 [2018-10-04 14:24:21,893 INFO L226 Difference]: Without dead ends: 45 [2018-10-04 14:24:21,893 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.2s impTime 41 [2018-10-04 14:24:21,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-04 14:24:21,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-10-04 14:24:21,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-04 14:24:21,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-10-04 14:24:21,895 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 43 [2018-10-04 14:24:21,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:21,895 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-10-04 14:24:21,896 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-04 14:24:21,896 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-10-04 14:24:21,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-04 14:24:21,896 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:21,896 INFO L375 BasicCegarLoop]: trace histogram [41, 1, 1, 1] [2018-10-04 14:24:21,896 INFO L423 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:21,897 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:21,897 INFO L82 PathProgramCache]: Analyzing trace with hash -2083001364, now seen corresponding path program 41 times [2018-10-04 14:24:21,897 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:21,897 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:21,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:21,898 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:21,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:21,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:22,901 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:22,901 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:24:22,901 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:24:22,909 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:24:22,991 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2018-10-04 14:24:22,991 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:22,996 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:23,104 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:23,130 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:24:23,130 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-10-04 14:24:23,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-04 14:24:23,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-04 14:24:23,131 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:23,131 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 44 states. [2018-10-04 14:24:23,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:23,458 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2018-10-04 14:24:23,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-04 14:24:23,459 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 44 [2018-10-04 14:24:23,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:23,459 INFO L225 Difference]: With dead ends: 48 [2018-10-04 14:24:23,460 INFO L226 Difference]: Without dead ends: 46 [2018-10-04 14:24:23,460 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.8s impTime 42 [2018-10-04 14:24:23,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-10-04 14:24:23,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-10-04 14:24:23,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-10-04 14:24:23,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2018-10-04 14:24:23,462 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 44 [2018-10-04 14:24:23,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:23,462 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2018-10-04 14:24:23,462 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-04 14:24:23,462 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2018-10-04 14:24:23,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-04 14:24:23,463 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:23,463 INFO L375 BasicCegarLoop]: trace histogram [42, 1, 1, 1] [2018-10-04 14:24:23,463 INFO L423 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:23,463 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:23,463 INFO L82 PathProgramCache]: Analyzing trace with hash -148531037, now seen corresponding path program 42 times [2018-10-04 14:24:23,463 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:23,463 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:23,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:23,464 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:23,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:23,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:24,479 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:24,479 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:24:24,479 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:24:24,486 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:24:24,565 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2018-10-04 14:24:24,566 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:24,570 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:25,018 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:25,040 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:24:25,040 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-10-04 14:24:25,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-04 14:24:25,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-04 14:24:25,041 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:25,041 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 45 states. [2018-10-04 14:24:25,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:25,121 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-10-04 14:24:25,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-04 14:24:25,122 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 45 [2018-10-04 14:24:25,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:25,122 INFO L225 Difference]: With dead ends: 49 [2018-10-04 14:24:25,122 INFO L226 Difference]: Without dead ends: 47 [2018-10-04 14:24:25,123 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.8s impTime 43 [2018-10-04 14:24:25,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-04 14:24:25,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-04 14:24:25,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-04 14:24:25,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-10-04 14:24:25,125 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 45 [2018-10-04 14:24:25,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:25,125 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-10-04 14:24:25,125 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-04 14:24:25,125 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-10-04 14:24:25,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-04 14:24:25,126 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:25,126 INFO L375 BasicCegarLoop]: trace histogram [43, 1, 1, 1] [2018-10-04 14:24:25,126 INFO L423 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:25,126 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:25,127 INFO L82 PathProgramCache]: Analyzing trace with hash -309493044, now seen corresponding path program 43 times [2018-10-04 14:24:25,127 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:25,127 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:25,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:25,127 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:25,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:25,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:26,260 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:26,260 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:24:26,260 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:24:26,269 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:24:26,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:26,338 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:26,461 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:26,481 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:24:26,482 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-10-04 14:24:26,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-04 14:24:26,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-04 14:24:26,482 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:26,483 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 46 states. [2018-10-04 14:24:26,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:26,642 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2018-10-04 14:24:26,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-04 14:24:26,642 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 46 [2018-10-04 14:24:26,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:26,643 INFO L225 Difference]: With dead ends: 50 [2018-10-04 14:24:26,643 INFO L226 Difference]: Without dead ends: 48 [2018-10-04 14:24:26,643 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.9s impTime 44 [2018-10-04 14:24:26,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-10-04 14:24:26,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-10-04 14:24:26,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-10-04 14:24:26,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2018-10-04 14:24:26,645 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 46 [2018-10-04 14:24:26,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:26,645 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2018-10-04 14:24:26,645 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-04 14:24:26,645 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2018-10-04 14:24:26,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-04 14:24:26,645 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:26,645 INFO L375 BasicCegarLoop]: trace histogram [44, 1, 1, 1] [2018-10-04 14:24:26,647 INFO L423 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:26,647 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:26,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1004347965, now seen corresponding path program 44 times [2018-10-04 14:24:26,647 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:26,647 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:26,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:26,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:24:26,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:26,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:27,812 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:27,813 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:24:27,813 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:24:27,837 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:24:27,899 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:24:27,899 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:27,903 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:28,012 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:28,033 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:24:28,033 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-10-04 14:24:28,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-04 14:24:28,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-04 14:24:28,034 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:28,034 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 47 states. [2018-10-04 14:24:28,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:28,112 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-10-04 14:24:28,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-04 14:24:28,113 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 47 [2018-10-04 14:24:28,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:28,113 INFO L225 Difference]: With dead ends: 51 [2018-10-04 14:24:28,113 INFO L226 Difference]: Without dead ends: 49 [2018-10-04 14:24:28,114 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.9s impTime 45 [2018-10-04 14:24:28,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-04 14:24:28,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-10-04 14:24:28,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-04 14:24:28,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-10-04 14:24:28,115 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 47 [2018-10-04 14:24:28,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:28,115 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-10-04 14:24:28,115 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-04 14:24:28,116 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-10-04 14:24:28,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-04 14:24:28,116 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:28,116 INFO L375 BasicCegarLoop]: trace histogram [45, 1, 1, 1] [2018-10-04 14:24:28,116 INFO L423 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:28,116 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:28,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1070014036, now seen corresponding path program 45 times [2018-10-04 14:24:28,117 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:28,117 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:28,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:28,118 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:28,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:28,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:29,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:29,091 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:24:29,091 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:24:29,099 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:24:29,184 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2018-10-04 14:24:29,184 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:29,189 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:29,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:29,403 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:24:29,403 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-10-04 14:24:29,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-04 14:24:29,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-04 14:24:29,404 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:29,404 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 48 states. [2018-10-04 14:24:29,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:29,854 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2018-10-04 14:24:29,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-04 14:24:29,854 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 48 [2018-10-04 14:24:29,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:29,855 INFO L225 Difference]: With dead ends: 52 [2018-10-04 14:24:29,855 INFO L226 Difference]: Without dead ends: 50 [2018-10-04 14:24:29,855 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.7s impTime 46 [2018-10-04 14:24:29,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-10-04 14:24:29,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-10-04 14:24:29,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-10-04 14:24:29,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2018-10-04 14:24:29,858 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 48 [2018-10-04 14:24:29,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:29,858 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2018-10-04 14:24:29,858 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-04 14:24:29,858 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2018-10-04 14:24:29,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-04 14:24:29,859 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:29,859 INFO L375 BasicCegarLoop]: trace histogram [46, 1, 1, 1] [2018-10-04 14:24:29,859 INFO L423 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:29,859 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:29,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1189305059, now seen corresponding path program 46 times [2018-10-04 14:24:29,859 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:29,859 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:29,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:29,860 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:29,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:29,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:31,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:31,254 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:24:31,254 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:24:31,263 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:24:31,334 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:24:31,334 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:31,338 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:31,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:31,501 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:24:31,501 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-10-04 14:24:31,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-04 14:24:31,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-04 14:24:31,502 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:31,502 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 49 states. [2018-10-04 14:24:31,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:31,622 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-10-04 14:24:31,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-04 14:24:31,622 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 49 [2018-10-04 14:24:31,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:31,623 INFO L225 Difference]: With dead ends: 53 [2018-10-04 14:24:31,623 INFO L226 Difference]: Without dead ends: 51 [2018-10-04 14:24:31,623 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.1s impTime 47 [2018-10-04 14:24:31,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-04 14:24:31,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-04 14:24:31,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-04 14:24:31,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-10-04 14:24:31,625 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 49 [2018-10-04 14:24:31,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:31,625 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-10-04 14:24:31,625 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-04 14:24:31,625 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-10-04 14:24:31,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-04 14:24:31,625 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:31,625 INFO L375 BasicCegarLoop]: trace histogram [47, 1, 1, 1] [2018-10-04 14:24:31,626 INFO L423 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:31,626 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:31,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1786247028, now seen corresponding path program 47 times [2018-10-04 14:24:31,626 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:31,626 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:31,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:31,626 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:31,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:31,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:32,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:32,481 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:24:32,481 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:24:32,488 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:24:32,588 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2018-10-04 14:24:32,588 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:32,595 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:32,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:32,748 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:24:32,748 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-10-04 14:24:32,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-04 14:24:32,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-04 14:24:32,749 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:32,749 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 50 states. [2018-10-04 14:24:32,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:32,854 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2018-10-04 14:24:32,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-04 14:24:32,854 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 50 [2018-10-04 14:24:32,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:32,855 INFO L225 Difference]: With dead ends: 54 [2018-10-04 14:24:32,855 INFO L226 Difference]: Without dead ends: 52 [2018-10-04 14:24:32,855 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.6s impTime 48 [2018-10-04 14:24:32,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-10-04 14:24:32,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-10-04 14:24:32,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-10-04 14:24:32,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2018-10-04 14:24:32,858 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 50 [2018-10-04 14:24:32,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:32,858 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2018-10-04 14:24:32,858 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-04 14:24:32,858 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2018-10-04 14:24:32,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-10-04 14:24:32,859 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:32,859 INFO L375 BasicCegarLoop]: trace histogram [48, 1, 1, 1] [2018-10-04 14:24:32,859 INFO L423 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:32,859 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:32,859 INFO L82 PathProgramCache]: Analyzing trace with hash 460918787, now seen corresponding path program 48 times [2018-10-04 14:24:32,859 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:32,859 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:32,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:32,860 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:32,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:32,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:33,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:33,635 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:24:33,635 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:24:33,643 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:24:33,732 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-10-04 14:24:33,732 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:33,738 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:33,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:33,892 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:24:33,892 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-10-04 14:24:33,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-04 14:24:33,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-04 14:24:33,893 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:33,893 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 51 states. [2018-10-04 14:24:33,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:33,977 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-10-04 14:24:33,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-04 14:24:33,977 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 51 [2018-10-04 14:24:33,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:33,978 INFO L225 Difference]: With dead ends: 55 [2018-10-04 14:24:33,978 INFO L226 Difference]: Without dead ends: 53 [2018-10-04 14:24:33,978 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.6s impTime 49 [2018-10-04 14:24:33,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-04 14:24:33,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-10-04 14:24:33,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-10-04 14:24:33,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-10-04 14:24:33,981 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 51 [2018-10-04 14:24:33,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:33,981 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-10-04 14:24:33,982 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-04 14:24:33,982 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-10-04 14:24:33,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-04 14:24:33,982 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:33,982 INFO L375 BasicCegarLoop]: trace histogram [49, 1, 1, 1] [2018-10-04 14:24:33,982 INFO L423 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:33,983 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:33,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1403582316, now seen corresponding path program 49 times [2018-10-04 14:24:33,983 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:33,983 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:33,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:33,984 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:33,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:34,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:35,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:35,866 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:24:35,866 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:24:35,873 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:24:35,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:35,950 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:36,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:36,115 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:24:36,116 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-10-04 14:24:36,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-04 14:24:36,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-04 14:24:36,116 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:36,116 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 52 states. [2018-10-04 14:24:36,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:36,210 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2018-10-04 14:24:36,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-04 14:24:36,210 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 52 [2018-10-04 14:24:36,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:36,211 INFO L225 Difference]: With dead ends: 56 [2018-10-04 14:24:36,211 INFO L226 Difference]: Without dead ends: 54 [2018-10-04 14:24:36,211 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.4s impTime 50 [2018-10-04 14:24:36,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-10-04 14:24:36,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-10-04 14:24:36,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-10-04 14:24:36,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2018-10-04 14:24:36,213 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 52 [2018-10-04 14:24:36,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:36,213 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2018-10-04 14:24:36,213 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-04 14:24:36,213 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2018-10-04 14:24:36,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-04 14:24:36,214 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:36,214 INFO L375 BasicCegarLoop]: trace histogram [50, 1, 1, 1] [2018-10-04 14:24:36,214 INFO L423 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:36,214 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:36,215 INFO L82 PathProgramCache]: Analyzing trace with hash 561380643, now seen corresponding path program 50 times [2018-10-04 14:24:36,215 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:36,215 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:36,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:36,215 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:24:36,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:36,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:37,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:37,061 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:24:37,061 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:24:37,071 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:24:37,140 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:24:37,140 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:37,145 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:37,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:37,300 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:24:37,300 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-10-04 14:24:37,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-04 14:24:37,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-04 14:24:37,301 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:37,301 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 53 states. [2018-10-04 14:24:37,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:37,387 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-10-04 14:24:37,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-04 14:24:37,388 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 53 [2018-10-04 14:24:37,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:37,389 INFO L225 Difference]: With dead ends: 57 [2018-10-04 14:24:37,389 INFO L226 Difference]: Without dead ends: 55 [2018-10-04 14:24:37,390 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.6s impTime 51 [2018-10-04 14:24:37,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-04 14:24:37,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-10-04 14:24:37,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-04 14:24:37,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-10-04 14:24:37,393 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 53 [2018-10-04 14:24:37,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:37,393 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-10-04 14:24:37,393 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-04 14:24:37,393 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-10-04 14:24:37,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-04 14:24:37,393 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:37,394 INFO L375 BasicCegarLoop]: trace histogram [51, 1, 1, 1] [2018-10-04 14:24:37,394 INFO L423 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:37,394 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:37,394 INFO L82 PathProgramCache]: Analyzing trace with hash 222932556, now seen corresponding path program 51 times [2018-10-04 14:24:37,394 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:37,394 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:37,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:37,395 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:37,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:37,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:39,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:39,554 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:24:39,554 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:24:39,561 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:24:39,701 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2018-10-04 14:24:39,701 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:39,707 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:39,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:39,897 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:24:39,897 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-10-04 14:24:39,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-04 14:24:39,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-04 14:24:39,898 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:39,898 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 54 states. [2018-10-04 14:24:40,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:40,036 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2018-10-04 14:24:40,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-04 14:24:40,036 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 54 [2018-10-04 14:24:40,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:40,037 INFO L225 Difference]: With dead ends: 58 [2018-10-04 14:24:40,037 INFO L226 Difference]: Without dead ends: 56 [2018-10-04 14:24:40,037 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.7s impTime 52 [2018-10-04 14:24:40,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-10-04 14:24:40,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-10-04 14:24:40,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-10-04 14:24:40,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2018-10-04 14:24:40,039 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 54 [2018-10-04 14:24:40,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:40,039 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2018-10-04 14:24:40,039 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-04 14:24:40,039 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2018-10-04 14:24:40,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-10-04 14:24:40,040 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:40,040 INFO L375 BasicCegarLoop]: trace histogram [52, 1, 1, 1] [2018-10-04 14:24:40,040 INFO L423 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:40,040 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:40,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1679023549, now seen corresponding path program 52 times [2018-10-04 14:24:40,041 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:40,041 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:40,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:40,041 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:40,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:40,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:41,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:41,194 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:24:41,194 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:24:41,202 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:24:41,276 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:24:41,277 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:41,283 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:41,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:41,508 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:24:41,508 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-10-04 14:24:41,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-04 14:24:41,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-04 14:24:41,509 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:41,509 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 55 states. [2018-10-04 14:24:41,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:41,622 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-10-04 14:24:41,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-04 14:24:41,623 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 55 [2018-10-04 14:24:41,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:41,623 INFO L225 Difference]: With dead ends: 59 [2018-10-04 14:24:41,623 INFO L226 Difference]: Without dead ends: 57 [2018-10-04 14:24:41,624 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.9s impTime 53 [2018-10-04 14:24:41,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-04 14:24:41,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-10-04 14:24:41,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-04 14:24:41,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-10-04 14:24:41,627 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 55 [2018-10-04 14:24:41,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:41,627 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-10-04 14:24:41,627 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-04 14:24:41,627 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-10-04 14:24:41,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-04 14:24:41,628 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:41,628 INFO L375 BasicCegarLoop]: trace histogram [53, 1, 1, 1] [2018-10-04 14:24:41,628 INFO L423 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:41,628 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:41,628 INFO L82 PathProgramCache]: Analyzing trace with hash -510120660, now seen corresponding path program 53 times [2018-10-04 14:24:41,629 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:41,629 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:41,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:41,629 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:41,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:41,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:43,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:43,134 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:24:43,134 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:24:43,142 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:24:43,259 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2018-10-04 14:24:43,259 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:43,266 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:43,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:43,417 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:24:43,417 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-10-04 14:24:43,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-04 14:24:43,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-04 14:24:43,418 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:43,418 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 56 states. [2018-10-04 14:24:43,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:43,526 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2018-10-04 14:24:43,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-04 14:24:43,527 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 56 [2018-10-04 14:24:43,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:43,527 INFO L225 Difference]: With dead ends: 60 [2018-10-04 14:24:43,527 INFO L226 Difference]: Without dead ends: 58 [2018-10-04 14:24:43,528 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.3s impTime 54 [2018-10-04 14:24:43,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-10-04 14:24:43,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-10-04 14:24:43,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-10-04 14:24:43,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2018-10-04 14:24:43,529 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 56 [2018-10-04 14:24:43,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:43,530 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2018-10-04 14:24:43,530 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-04 14:24:43,530 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2018-10-04 14:24:43,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-10-04 14:24:43,530 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:43,530 INFO L375 BasicCegarLoop]: trace histogram [54, 1, 1, 1] [2018-10-04 14:24:43,530 INFO L423 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:43,530 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:43,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1366130531, now seen corresponding path program 54 times [2018-10-04 14:24:43,531 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:43,531 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:43,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:43,531 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:43,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:43,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:44,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:44,675 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:24:44,675 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:24:44,682 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:24:44,790 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2018-10-04 14:24:44,790 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:44,796 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:44,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:44,993 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:24:44,993 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2018-10-04 14:24:44,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-04 14:24:44,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-04 14:24:44,994 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:44,994 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 57 states. [2018-10-04 14:24:45,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:45,089 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-10-04 14:24:45,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-04 14:24:45,090 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 57 [2018-10-04 14:24:45,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:45,091 INFO L225 Difference]: With dead ends: 61 [2018-10-04 14:24:45,091 INFO L226 Difference]: Without dead ends: 59 [2018-10-04 14:24:45,091 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.9s impTime 55 [2018-10-04 14:24:45,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-04 14:24:45,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-10-04 14:24:45,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-04 14:24:45,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-10-04 14:24:45,094 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 57 [2018-10-04 14:24:45,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:45,094 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-10-04 14:24:45,094 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-04 14:24:45,094 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-10-04 14:24:45,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-04 14:24:45,095 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:45,095 INFO L375 BasicCegarLoop]: trace histogram [55, 1, 1, 1] [2018-10-04 14:24:45,095 INFO L423 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:45,095 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:45,095 INFO L82 PathProgramCache]: Analyzing trace with hash -599624692, now seen corresponding path program 55 times [2018-10-04 14:24:45,095 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:45,095 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:45,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:45,096 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:45,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:45,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:46,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:46,411 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:24:46,411 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:24:46,420 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:24:46,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:46,507 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:46,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:46,667 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:24:46,667 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-10-04 14:24:46,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-04 14:24:46,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-04 14:24:46,668 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:46,668 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 58 states. [2018-10-04 14:24:46,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:46,825 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2018-10-04 14:24:46,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-04 14:24:46,825 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 58 [2018-10-04 14:24:46,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:46,826 INFO L225 Difference]: With dead ends: 62 [2018-10-04 14:24:46,826 INFO L226 Difference]: Without dead ends: 60 [2018-10-04 14:24:46,826 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 1.1s impTime 56 [2018-10-04 14:24:46,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-10-04 14:24:46,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-10-04 14:24:46,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-10-04 14:24:46,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2018-10-04 14:24:46,828 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 58 [2018-10-04 14:24:46,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:46,829 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2018-10-04 14:24:46,829 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-04 14:24:46,829 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2018-10-04 14:24:46,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-04 14:24:46,829 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:46,829 INFO L375 BasicCegarLoop]: trace histogram [56, 1, 1, 1] [2018-10-04 14:24:46,829 INFO L423 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:46,829 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:46,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1408494461, now seen corresponding path program 56 times [2018-10-04 14:24:46,830 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:46,830 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:46,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:46,830 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:24:46,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:46,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:48,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:48,022 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:24:48,022 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:24:48,030 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:24:48,114 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:24:48,115 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:48,121 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:48,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:48,277 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:24:48,277 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-10-04 14:24:48,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-04 14:24:48,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-04 14:24:48,277 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:48,278 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 59 states. [2018-10-04 14:24:48,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:48,382 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-10-04 14:24:48,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-04 14:24:48,383 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 59 [2018-10-04 14:24:48,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:48,384 INFO L225 Difference]: With dead ends: 63 [2018-10-04 14:24:48,384 INFO L226 Difference]: Without dead ends: 61 [2018-10-04 14:24:48,384 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 1.0s impTime 57 [2018-10-04 14:24:48,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-10-04 14:24:48,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-10-04 14:24:48,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-10-04 14:24:48,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-10-04 14:24:48,387 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 59 [2018-10-04 14:24:48,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:48,388 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-10-04 14:24:48,388 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-04 14:24:48,388 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-10-04 14:24:48,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-10-04 14:24:48,388 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:48,388 INFO L375 BasicCegarLoop]: trace histogram [57, 1, 1, 1] [2018-10-04 14:24:48,388 INFO L423 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:48,388 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:48,388 INFO L82 PathProgramCache]: Analyzing trace with hash -713653524, now seen corresponding path program 57 times [2018-10-04 14:24:48,389 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:48,389 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:48,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:48,389 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:48,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:48,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:50,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:50,097 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:24:50,097 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:24:50,104 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:24:50,237 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2018-10-04 14:24:50,237 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:50,243 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:50,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:50,560 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:24:50,561 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-10-04 14:24:50,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-04 14:24:50,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-04 14:24:50,561 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:50,561 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 60 states. [2018-10-04 14:24:50,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:50,721 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2018-10-04 14:24:50,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-04 14:24:50,721 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 60 [2018-10-04 14:24:50,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:50,722 INFO L225 Difference]: With dead ends: 64 [2018-10-04 14:24:50,722 INFO L226 Difference]: Without dead ends: 62 [2018-10-04 14:24:50,722 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.5s impTime 58 [2018-10-04 14:24:50,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-10-04 14:24:50,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-10-04 14:24:50,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-10-04 14:24:50,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2018-10-04 14:24:50,724 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 60 [2018-10-04 14:24:50,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:50,725 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2018-10-04 14:24:50,725 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-04 14:24:50,725 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2018-10-04 14:24:50,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-10-04 14:24:50,725 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:50,725 INFO L375 BasicCegarLoop]: trace histogram [58, 1, 1, 1] [2018-10-04 14:24:50,726 INFO L423 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:50,726 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:50,726 INFO L82 PathProgramCache]: Analyzing trace with hash -648420957, now seen corresponding path program 58 times [2018-10-04 14:24:50,726 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:50,726 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:50,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:50,727 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:50,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:50,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:52,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:52,388 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:24:52,388 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:24:52,396 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:24:52,482 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:24:52,482 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:52,488 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:52,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:52,655 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:24:52,655 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-10-04 14:24:52,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-10-04 14:24:52,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-10-04 14:24:52,656 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:52,656 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 61 states. [2018-10-04 14:24:52,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:52,806 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-10-04 14:24:52,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-04 14:24:52,806 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 61 [2018-10-04 14:24:52,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:52,807 INFO L225 Difference]: With dead ends: 65 [2018-10-04 14:24:52,807 INFO L226 Difference]: Without dead ends: 63 [2018-10-04 14:24:52,807 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.3s impTime 59 [2018-10-04 14:24:52,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-10-04 14:24:52,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-10-04 14:24:52,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-10-04 14:24:52,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-10-04 14:24:52,810 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 61 [2018-10-04 14:24:52,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:52,810 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-10-04 14:24:52,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-10-04 14:24:52,810 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-10-04 14:24:52,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-04 14:24:52,811 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:52,811 INFO L375 BasicCegarLoop]: trace histogram [59, 1, 1, 1] [2018-10-04 14:24:52,811 INFO L423 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:52,811 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:52,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1373788620, now seen corresponding path program 59 times [2018-10-04 14:24:52,811 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:52,811 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:52,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:52,812 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:52,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:52,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:54,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:54,582 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:24:54,582 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:24:54,591 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:24:54,738 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2018-10-04 14:24:54,738 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:54,746 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:54,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:54,996 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:24:54,997 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-10-04 14:24:54,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-04 14:24:54,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-04 14:24:54,998 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:54,998 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 62 states. [2018-10-04 14:24:55,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:55,120 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2018-10-04 14:24:55,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-04 14:24:55,120 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 62 [2018-10-04 14:24:55,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:55,121 INFO L225 Difference]: With dead ends: 66 [2018-10-04 14:24:55,121 INFO L226 Difference]: Without dead ends: 64 [2018-10-04 14:24:55,121 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.6s impTime 60 [2018-10-04 14:24:55,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-10-04 14:24:55,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-10-04 14:24:55,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-10-04 14:24:55,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2018-10-04 14:24:55,123 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 62 [2018-10-04 14:24:55,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:55,123 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2018-10-04 14:24:55,123 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-04 14:24:55,123 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2018-10-04 14:24:55,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-10-04 14:24:55,123 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:55,123 INFO L375 BasicCegarLoop]: trace histogram [60, 1, 1, 1] [2018-10-04 14:24:55,124 INFO L423 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:55,124 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:55,124 INFO L82 PathProgramCache]: Analyzing trace with hash -362223933, now seen corresponding path program 60 times [2018-10-04 14:24:55,124 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:55,124 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:55,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:55,125 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:55,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:55,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:56,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:56,528 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:24:56,528 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:24:56,537 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:24:56,670 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-10-04 14:24:56,670 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:56,677 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:56,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:56,859 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:24:56,859 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2018-10-04 14:24:56,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-04 14:24:56,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-04 14:24:56,860 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:56,860 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 63 states. [2018-10-04 14:24:56,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:56,972 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-10-04 14:24:56,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-04 14:24:56,972 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 63 [2018-10-04 14:24:56,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:56,973 INFO L225 Difference]: With dead ends: 67 [2018-10-04 14:24:56,973 INFO L226 Difference]: Without dead ends: 65 [2018-10-04 14:24:56,973 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.1s impTime 61 [2018-10-04 14:24:56,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-10-04 14:24:56,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-10-04 14:24:56,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-10-04 14:24:56,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-10-04 14:24:56,975 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 63 [2018-10-04 14:24:56,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:56,976 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-10-04 14:24:56,976 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-04 14:24:56,976 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-10-04 14:24:56,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-10-04 14:24:56,976 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:56,976 INFO L375 BasicCegarLoop]: trace histogram [61, 1, 1, 1] [2018-10-04 14:24:56,977 INFO L423 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:56,977 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:56,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1655961772, now seen corresponding path program 61 times [2018-10-04 14:24:56,977 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:56,977 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:56,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:56,977 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:24:56,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:56,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:58,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:58,041 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:24:58,041 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:24:58,049 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:24:58,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:58,143 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:24:58,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:58,411 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:24:58,411 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-10-04 14:24:58,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-04 14:24:58,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-04 14:24:58,412 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:24:58,412 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 64 states. [2018-10-04 14:24:58,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:24:58,513 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2018-10-04 14:24:58,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-04 14:24:58,513 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 64 [2018-10-04 14:24:58,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:24:58,514 INFO L225 Difference]: With dead ends: 68 [2018-10-04 14:24:58,514 INFO L226 Difference]: Without dead ends: 66 [2018-10-04 14:24:58,514 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.9s impTime 62 [2018-10-04 14:24:58,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-10-04 14:24:58,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-10-04 14:24:58,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-10-04 14:24:58,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2018-10-04 14:24:58,516 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 64 [2018-10-04 14:24:58,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:24:58,516 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2018-10-04 14:24:58,516 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-04 14:24:58,516 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2018-10-04 14:24:58,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-10-04 14:24:58,517 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:24:58,517 INFO L375 BasicCegarLoop]: trace histogram [62, 1, 1, 1] [2018-10-04 14:24:58,517 INFO L423 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:24:58,517 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:24:58,517 INFO L82 PathProgramCache]: Analyzing trace with hash -204790813, now seen corresponding path program 62 times [2018-10-04 14:24:58,517 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:24:58,517 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:24:58,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:58,518 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:24:58,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:24:58,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:24:59,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:24:59,654 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:24:59,654 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:24:59,663 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:24:59,752 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:24:59,753 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:24:59,760 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:00,041 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:00,073 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:00,073 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-10-04 14:25:00,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-04 14:25:00,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-04 14:25:00,074 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:00,074 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 65 states. [2018-10-04 14:25:00,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:00,278 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-10-04 14:25:00,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-04 14:25:00,278 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 65 [2018-10-04 14:25:00,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:00,279 INFO L225 Difference]: With dead ends: 69 [2018-10-04 14:25:00,279 INFO L226 Difference]: Without dead ends: 67 [2018-10-04 14:25:00,279 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.9s impTime 63 [2018-10-04 14:25:00,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-10-04 14:25:00,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-10-04 14:25:00,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-10-04 14:25:00,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-10-04 14:25:00,281 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 65 [2018-10-04 14:25:00,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:00,282 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-10-04 14:25:00,282 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-04 14:25:00,282 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-10-04 14:25:00,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-04 14:25:00,282 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:00,283 INFO L375 BasicCegarLoop]: trace histogram [63, 1, 1, 1] [2018-10-04 14:25:00,283 INFO L423 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:00,283 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:00,283 INFO L82 PathProgramCache]: Analyzing trace with hash -2053546100, now seen corresponding path program 63 times [2018-10-04 14:25:00,283 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:00,283 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:00,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:00,284 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:00,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:00,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:02,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:02,304 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:02,304 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:25:02,314 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:25:02,527 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2018-10-04 14:25:02,527 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:02,534 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:02,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:02,881 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:02,881 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-10-04 14:25:02,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-04 14:25:02,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-04 14:25:02,882 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:02,882 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 66 states. [2018-10-04 14:25:03,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:03,122 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2018-10-04 14:25:03,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-04 14:25:03,123 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 66 [2018-10-04 14:25:03,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:03,124 INFO L225 Difference]: With dead ends: 70 [2018-10-04 14:25:03,124 INFO L226 Difference]: Without dead ends: 68 [2018-10-04 14:25:03,124 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.7s impTime 64 [2018-10-04 14:25:03,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-10-04 14:25:03,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-10-04 14:25:03,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-10-04 14:25:03,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2018-10-04 14:25:03,126 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 66 [2018-10-04 14:25:03,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:03,126 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2018-10-04 14:25:03,127 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-04 14:25:03,127 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2018-10-04 14:25:03,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-10-04 14:25:03,127 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:03,127 INFO L375 BasicCegarLoop]: trace histogram [64, 1, 1, 1] [2018-10-04 14:25:03,127 INFO L423 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:03,128 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:03,128 INFO L82 PathProgramCache]: Analyzing trace with hash 764582147, now seen corresponding path program 64 times [2018-10-04 14:25:03,128 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:03,128 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:03,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:03,129 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:03,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:03,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:05,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:05,273 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:05,273 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:25:05,284 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:25:05,381 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:25:05,382 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:05,389 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:05,541 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:05,561 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:05,561 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-10-04 14:25:05,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-04 14:25:05,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-04 14:25:05,562 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:05,562 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 67 states. [2018-10-04 14:25:05,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:05,768 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-10-04 14:25:05,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-04 14:25:05,768 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 67 [2018-10-04 14:25:05,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:05,769 INFO L225 Difference]: With dead ends: 71 [2018-10-04 14:25:05,769 INFO L226 Difference]: Without dead ends: 69 [2018-10-04 14:25:05,769 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.8s impTime 65 [2018-10-04 14:25:05,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-10-04 14:25:05,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-10-04 14:25:05,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-10-04 14:25:05,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-10-04 14:25:05,771 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 67 [2018-10-04 14:25:05,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:05,772 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-10-04 14:25:05,772 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-04 14:25:05,772 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-10-04 14:25:05,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-04 14:25:05,773 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:05,773 INFO L375 BasicCegarLoop]: trace histogram [65, 1, 1, 1] [2018-10-04 14:25:05,773 INFO L423 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:05,773 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:05,773 INFO L82 PathProgramCache]: Analyzing trace with hash -2067755412, now seen corresponding path program 65 times [2018-10-04 14:25:05,773 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:05,773 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:05,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:05,774 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:05,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:05,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:07,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:07,546 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:07,546 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:25:07,553 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:25:07,704 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2018-10-04 14:25:07,704 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:07,715 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:07,875 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:07,896 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:07,896 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-10-04 14:25:07,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-04 14:25:07,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-04 14:25:07,897 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:07,897 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 68 states. [2018-10-04 14:25:08,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:08,033 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2018-10-04 14:25:08,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-04 14:25:08,033 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 68 [2018-10-04 14:25:08,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:08,034 INFO L225 Difference]: With dead ends: 72 [2018-10-04 14:25:08,034 INFO L226 Difference]: Without dead ends: 70 [2018-10-04 14:25:08,035 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.5s impTime 66 [2018-10-04 14:25:08,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-10-04 14:25:08,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-10-04 14:25:08,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-10-04 14:25:08,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2018-10-04 14:25:08,037 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 68 [2018-10-04 14:25:08,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:08,037 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2018-10-04 14:25:08,037 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-04 14:25:08,038 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2018-10-04 14:25:08,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-10-04 14:25:08,038 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:08,038 INFO L375 BasicCegarLoop]: trace histogram [66, 1, 1, 1] [2018-10-04 14:25:08,038 INFO L423 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:08,038 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:08,038 INFO L82 PathProgramCache]: Analyzing trace with hash 324093475, now seen corresponding path program 66 times [2018-10-04 14:25:08,038 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:08,038 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:08,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:08,039 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:08,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:08,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:09,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:09,427 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:09,427 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:25:09,443 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:25:09,630 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2018-10-04 14:25:09,630 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:09,638 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:11,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:11,744 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:11,744 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 68 [2018-10-04 14:25:11,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-10-04 14:25:11,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-10-04 14:25:11,745 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:11,745 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 69 states. [2018-10-04 14:25:11,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:11,836 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-10-04 14:25:11,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-04 14:25:11,837 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 69 [2018-10-04 14:25:11,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:11,838 INFO L225 Difference]: With dead ends: 73 [2018-10-04 14:25:11,838 INFO L226 Difference]: Without dead ends: 71 [2018-10-04 14:25:11,838 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s Time 1.2s impTime 67 [2018-10-04 14:25:11,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-04 14:25:11,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-10-04 14:25:11,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-10-04 14:25:11,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-10-04 14:25:11,841 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 69 [2018-10-04 14:25:11,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:11,841 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-10-04 14:25:11,842 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-10-04 14:25:11,842 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-10-04 14:25:11,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-04 14:25:11,842 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:11,842 INFO L375 BasicCegarLoop]: trace histogram [67, 1, 1, 1] [2018-10-04 14:25:11,842 INFO L423 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:11,843 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:11,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1456964940, now seen corresponding path program 67 times [2018-10-04 14:25:11,843 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:11,843 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:11,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:11,843 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:11,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:11,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:13,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:13,998 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:13,998 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:25:14,004 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:25:14,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:14,105 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:14,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:14,276 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:14,276 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-10-04 14:25:14,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-04 14:25:14,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-04 14:25:14,277 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:14,277 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 70 states. [2018-10-04 14:25:14,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:14,423 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2018-10-04 14:25:14,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-04 14:25:14,423 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 70 [2018-10-04 14:25:14,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:14,424 INFO L225 Difference]: With dead ends: 74 [2018-10-04 14:25:14,424 INFO L226 Difference]: Without dead ends: 72 [2018-10-04 14:25:14,424 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.9s impTime 68 [2018-10-04 14:25:14,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-10-04 14:25:14,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-10-04 14:25:14,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-10-04 14:25:14,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2018-10-04 14:25:14,426 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 70 [2018-10-04 14:25:14,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:14,426 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2018-10-04 14:25:14,426 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-04 14:25:14,426 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2018-10-04 14:25:14,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-10-04 14:25:14,426 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:14,427 INFO L375 BasicCegarLoop]: trace histogram [68, 1, 1, 1] [2018-10-04 14:25:14,427 INFO L423 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:14,427 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:14,427 INFO L82 PathProgramCache]: Analyzing trace with hash -2078725309, now seen corresponding path program 68 times [2018-10-04 14:25:14,427 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:14,427 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:14,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:14,428 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:25:14,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:14,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:16,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:16,784 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:16,784 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:25:16,791 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:25:16,887 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:25:16,888 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:16,895 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:17,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:17,297 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:17,297 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-10-04 14:25:17,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-04 14:25:17,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-04 14:25:17,298 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:17,298 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 71 states. [2018-10-04 14:25:17,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:17,473 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-10-04 14:25:17,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-04 14:25:17,473 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 71 [2018-10-04 14:25:17,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:17,474 INFO L225 Difference]: With dead ends: 75 [2018-10-04 14:25:17,474 INFO L226 Difference]: Without dead ends: 73 [2018-10-04 14:25:17,474 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.1s impTime 69 [2018-10-04 14:25:17,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-10-04 14:25:17,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-10-04 14:25:17,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-10-04 14:25:17,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-10-04 14:25:17,477 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 71 [2018-10-04 14:25:17,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:17,477 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-10-04 14:25:17,477 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-04 14:25:17,477 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-10-04 14:25:17,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-10-04 14:25:17,478 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:17,478 INFO L375 BasicCegarLoop]: trace histogram [69, 1, 1, 1] [2018-10-04 14:25:17,478 INFO L423 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:17,478 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:17,478 INFO L82 PathProgramCache]: Analyzing trace with hash -15973332, now seen corresponding path program 69 times [2018-10-04 14:25:17,478 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:17,478 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:17,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:17,479 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:17,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:17,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:19,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:19,787 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:19,787 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:25:19,795 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:25:19,986 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2018-10-04 14:25:19,987 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:19,994 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:20,264 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:20,284 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:20,284 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2018-10-04 14:25:20,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-04 14:25:20,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-04 14:25:20,285 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:20,285 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 72 states. [2018-10-04 14:25:20,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:20,454 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2018-10-04 14:25:20,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-04 14:25:20,454 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 72 [2018-10-04 14:25:20,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:20,455 INFO L225 Difference]: With dead ends: 76 [2018-10-04 14:25:20,455 INFO L226 Difference]: Without dead ends: 74 [2018-10-04 14:25:20,455 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 2.1s impTime 70 [2018-10-04 14:25:20,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-10-04 14:25:20,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2018-10-04 14:25:20,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-10-04 14:25:20,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2018-10-04 14:25:20,458 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 72 [2018-10-04 14:25:20,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:20,458 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2018-10-04 14:25:20,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-04 14:25:20,458 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2018-10-04 14:25:20,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-10-04 14:25:20,459 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:20,459 INFO L375 BasicCegarLoop]: trace histogram [70, 1, 1, 1] [2018-10-04 14:25:20,459 INFO L423 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:20,459 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:20,459 INFO L82 PathProgramCache]: Analyzing trace with hash -495171485, now seen corresponding path program 70 times [2018-10-04 14:25:20,459 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:20,460 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:20,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:20,460 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:20,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:20,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:22,339 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:22,339 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:22,339 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:25:22,347 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:25:22,452 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:25:22,452 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:22,459 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:22,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:22,645 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:22,645 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2018-10-04 14:25:22,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-04 14:25:22,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-04 14:25:22,646 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:22,647 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand 73 states. [2018-10-04 14:25:22,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:22,861 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-10-04 14:25:22,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-04 14:25:22,861 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 73 [2018-10-04 14:25:22,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:22,862 INFO L225 Difference]: With dead ends: 77 [2018-10-04 14:25:22,862 INFO L226 Difference]: Without dead ends: 75 [2018-10-04 14:25:22,862 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.5s impTime 71 [2018-10-04 14:25:22,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-10-04 14:25:22,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-10-04 14:25:22,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-04 14:25:22,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-10-04 14:25:22,865 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 73 [2018-10-04 14:25:22,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:22,865 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-10-04 14:25:22,865 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-04 14:25:22,865 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-10-04 14:25:22,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-04 14:25:22,866 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:22,866 INFO L375 BasicCegarLoop]: trace histogram [71, 1, 1, 1] [2018-10-04 14:25:22,866 INFO L423 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:22,866 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:22,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1829554956, now seen corresponding path program 71 times [2018-10-04 14:25:22,867 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:22,867 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:22,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:22,867 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:22,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:22,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:25,182 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:25,182 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:25,182 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:25:25,190 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:25:25,355 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2018-10-04 14:25:25,355 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:25,364 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:25,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:25,678 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:25,679 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2018-10-04 14:25:25,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-04 14:25:25,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-04 14:25:25,680 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:25,680 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 74 states. [2018-10-04 14:25:25,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:25,842 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2018-10-04 14:25:25,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-04 14:25:25,842 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 74 [2018-10-04 14:25:25,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:25,843 INFO L225 Difference]: With dead ends: 78 [2018-10-04 14:25:25,843 INFO L226 Difference]: Without dead ends: 76 [2018-10-04 14:25:25,844 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 1.9s impTime 72 [2018-10-04 14:25:25,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-10-04 14:25:25,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-10-04 14:25:25,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-10-04 14:25:25,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2018-10-04 14:25:25,846 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 74 [2018-10-04 14:25:25,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:25,847 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2018-10-04 14:25:25,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-04 14:25:25,847 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2018-10-04 14:25:25,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-10-04 14:25:25,847 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:25,847 INFO L375 BasicCegarLoop]: trace histogram [72, 1, 1, 1] [2018-10-04 14:25:25,848 INFO L423 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:25,848 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:25,848 INFO L82 PathProgramCache]: Analyzing trace with hash 881630595, now seen corresponding path program 72 times [2018-10-04 14:25:25,848 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:25,848 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:25,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:25,849 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:25,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:25,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:28,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:28,542 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:28,542 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:25:28,550 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:25:28,716 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-10-04 14:25:28,716 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:28,723 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:28,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:28,934 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:28,935 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 74 [2018-10-04 14:25:28,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-10-04 14:25:28,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-10-04 14:25:28,936 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:28,936 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 75 states. [2018-10-04 14:25:29,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:29,114 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-10-04 14:25:29,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-04 14:25:29,114 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 75 [2018-10-04 14:25:29,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:29,115 INFO L225 Difference]: With dead ends: 79 [2018-10-04 14:25:29,115 INFO L226 Difference]: Without dead ends: 77 [2018-10-04 14:25:29,115 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.3s impTime 73 [2018-10-04 14:25:29,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-10-04 14:25:29,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-10-04 14:25:29,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-10-04 14:25:29,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-10-04 14:25:29,117 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 75 [2018-10-04 14:25:29,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:29,118 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-10-04 14:25:29,118 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-10-04 14:25:29,118 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-10-04 14:25:29,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-10-04 14:25:29,118 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:29,119 INFO L375 BasicCegarLoop]: trace histogram [73, 1, 1, 1] [2018-10-04 14:25:29,119 INFO L423 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:29,119 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:29,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1560746476, now seen corresponding path program 73 times [2018-10-04 14:25:29,119 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:29,119 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:29,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:29,120 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:29,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:29,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:32,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:32,148 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:32,148 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:25:32,156 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:25:32,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:32,267 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:32,799 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:32,819 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:32,819 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2018-10-04 14:25:32,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-04 14:25:32,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-04 14:25:32,820 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:32,821 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 76 states. [2018-10-04 14:25:32,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:32,986 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2018-10-04 14:25:32,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-04 14:25:32,987 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 76 [2018-10-04 14:25:32,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:32,987 INFO L225 Difference]: With dead ends: 80 [2018-10-04 14:25:32,987 INFO L226 Difference]: Without dead ends: 78 [2018-10-04 14:25:32,988 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4s Time 2.6s impTime 74 [2018-10-04 14:25:32,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-10-04 14:25:32,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2018-10-04 14:25:32,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-10-04 14:25:32,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2018-10-04 14:25:32,990 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 76 [2018-10-04 14:25:32,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:32,990 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2018-10-04 14:25:32,990 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-04 14:25:32,991 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2018-10-04 14:25:32,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-10-04 14:25:32,991 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:32,991 INFO L375 BasicCegarLoop]: trace histogram [74, 1, 1, 1] [2018-10-04 14:25:32,991 INFO L423 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:32,991 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:32,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1138502307, now seen corresponding path program 74 times [2018-10-04 14:25:32,992 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:32,992 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:32,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:32,992 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:25:32,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:33,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:35,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:35,397 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:35,398 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:25:35,404 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:25:35,503 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:25:35,503 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:35,509 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:35,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:35,705 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:35,706 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2018-10-04 14:25:35,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-10-04 14:25:35,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-10-04 14:25:35,706 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:35,706 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand 77 states. [2018-10-04 14:25:35,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:35,879 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-10-04 14:25:35,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-04 14:25:35,879 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 77 [2018-10-04 14:25:35,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:35,880 INFO L225 Difference]: With dead ends: 81 [2018-10-04 14:25:35,880 INFO L226 Difference]: Without dead ends: 79 [2018-10-04 14:25:35,880 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 2.2s impTime 75 [2018-10-04 14:25:35,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-10-04 14:25:35,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-10-04 14:25:35,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-10-04 14:25:35,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-10-04 14:25:35,883 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 77 [2018-10-04 14:25:35,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:35,883 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-10-04 14:25:35,883 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-10-04 14:25:35,884 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-10-04 14:25:35,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-04 14:25:35,884 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:35,884 INFO L375 BasicCegarLoop]: trace histogram [75, 1, 1, 1] [2018-10-04 14:25:35,885 INFO L423 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:35,885 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:35,885 INFO L82 PathProgramCache]: Analyzing trace with hash 933834956, now seen corresponding path program 75 times [2018-10-04 14:25:35,885 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:35,885 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:35,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:35,886 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:35,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:35,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:38,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:38,815 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:38,815 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:25:38,822 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:25:39,006 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2018-10-04 14:25:39,006 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:39,012 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:39,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:39,233 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:39,233 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2018-10-04 14:25:39,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-10-04 14:25:39,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-10-04 14:25:39,234 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:39,234 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 78 states. [2018-10-04 14:25:40,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:40,009 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2018-10-04 14:25:40,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-10-04 14:25:40,010 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 78 [2018-10-04 14:25:40,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:40,010 INFO L225 Difference]: With dead ends: 82 [2018-10-04 14:25:40,010 INFO L226 Difference]: Without dead ends: 80 [2018-10-04 14:25:40,010 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.6s impTime 76 [2018-10-04 14:25:40,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-10-04 14:25:40,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2018-10-04 14:25:40,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-10-04 14:25:40,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2018-10-04 14:25:40,012 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 78 [2018-10-04 14:25:40,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:40,012 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2018-10-04 14:25:40,013 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-10-04 14:25:40,013 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2018-10-04 14:25:40,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-10-04 14:25:40,013 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:40,013 INFO L375 BasicCegarLoop]: trace histogram [76, 1, 1, 1] [2018-10-04 14:25:40,013 INFO L423 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:40,013 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:40,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1115885629, now seen corresponding path program 76 times [2018-10-04 14:25:40,014 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:40,014 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:40,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:40,014 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:40,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:40,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:42,969 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:42,970 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:42,970 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:25:42,976 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:25:43,079 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:25:43,080 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:43,086 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:43,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:43,278 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:43,278 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2018-10-04 14:25:43,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-10-04 14:25:43,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-10-04 14:25:43,279 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:43,279 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 79 states. [2018-10-04 14:25:43,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:43,914 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-10-04 14:25:43,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-10-04 14:25:43,915 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 79 [2018-10-04 14:25:43,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:43,915 INFO L225 Difference]: With dead ends: 83 [2018-10-04 14:25:43,915 INFO L226 Difference]: Without dead ends: 81 [2018-10-04 14:25:43,915 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.7s impTime 77 [2018-10-04 14:25:43,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-10-04 14:25:43,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-10-04 14:25:43,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-10-04 14:25:43,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-10-04 14:25:43,917 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 79 [2018-10-04 14:25:43,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:43,917 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-10-04 14:25:43,917 INFO L481 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-10-04 14:25:43,918 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-10-04 14:25:43,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-10-04 14:25:43,918 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:43,918 INFO L375 BasicCegarLoop]: trace histogram [77, 1, 1, 1] [2018-10-04 14:25:43,918 INFO L423 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:43,919 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:43,919 INFO L82 PathProgramCache]: Analyzing trace with hash -232714324, now seen corresponding path program 77 times [2018-10-04 14:25:43,919 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:43,919 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:43,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:43,920 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:43,920 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:43,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:46,311 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:46,311 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:46,311 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:25:46,319 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:25:46,505 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2018-10-04 14:25:46,505 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:46,514 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:47,179 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:47,200 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:47,200 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2018-10-04 14:25:47,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-04 14:25:47,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-04 14:25:47,201 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:47,201 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 80 states. [2018-10-04 14:25:47,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:47,366 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2018-10-04 14:25:47,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-10-04 14:25:47,366 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 80 [2018-10-04 14:25:47,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:47,366 INFO L225 Difference]: With dead ends: 84 [2018-10-04 14:25:47,366 INFO L226 Difference]: Without dead ends: 82 [2018-10-04 14:25:47,367 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.1s impTime 78 [2018-10-04 14:25:47,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-10-04 14:25:47,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2018-10-04 14:25:47,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-10-04 14:25:47,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2018-10-04 14:25:47,368 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 80 [2018-10-04 14:25:47,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:47,371 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2018-10-04 14:25:47,371 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-04 14:25:47,371 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2018-10-04 14:25:47,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-10-04 14:25:47,372 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:47,372 INFO L375 BasicCegarLoop]: trace histogram [78, 1, 1, 1] [2018-10-04 14:25:47,372 INFO L423 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:47,372 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:47,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1375792355, now seen corresponding path program 78 times [2018-10-04 14:25:47,372 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:47,373 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:47,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:47,373 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:47,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:47,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:49,316 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:49,316 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:49,317 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:25:49,323 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:25:49,501 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2018-10-04 14:25:49,501 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:49,508 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:49,684 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:49,704 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:49,705 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 80 [2018-10-04 14:25:49,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-10-04 14:25:49,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-10-04 14:25:49,706 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:49,706 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand 81 states. [2018-10-04 14:25:49,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:49,833 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-10-04 14:25:49,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-04 14:25:49,833 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 81 [2018-10-04 14:25:49,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:49,834 INFO L225 Difference]: With dead ends: 85 [2018-10-04 14:25:49,834 INFO L226 Difference]: Without dead ends: 83 [2018-10-04 14:25:49,834 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.7s impTime 79 [2018-10-04 14:25:49,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-10-04 14:25:49,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-10-04 14:25:49,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-10-04 14:25:49,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-10-04 14:25:49,836 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 81 [2018-10-04 14:25:49,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:49,836 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-10-04 14:25:49,836 INFO L481 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-10-04 14:25:49,837 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-10-04 14:25:49,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-04 14:25:49,837 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:49,837 INFO L375 BasicCegarLoop]: trace histogram [79, 1, 1, 1] [2018-10-04 14:25:49,837 INFO L423 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:49,837 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:49,838 INFO L82 PathProgramCache]: Analyzing trace with hash -300108148, now seen corresponding path program 79 times [2018-10-04 14:25:49,838 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:49,838 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:49,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:49,838 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:49,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:49,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:52,139 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:52,140 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:52,140 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:25:52,163 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:25:52,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:52,284 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:52,474 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:52,494 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:52,495 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2018-10-04 14:25:52,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-10-04 14:25:52,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-10-04 14:25:52,496 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:52,496 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 82 states. [2018-10-04 14:25:52,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:52,689 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2018-10-04 14:25:52,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-10-04 14:25:52,689 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 82 [2018-10-04 14:25:52,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:52,690 INFO L225 Difference]: With dead ends: 86 [2018-10-04 14:25:52,690 INFO L226 Difference]: Without dead ends: 84 [2018-10-04 14:25:52,690 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 2.0s impTime 80 [2018-10-04 14:25:52,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-10-04 14:25:52,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2018-10-04 14:25:52,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-10-04 14:25:52,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2018-10-04 14:25:52,693 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 82 [2018-10-04 14:25:52,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:52,693 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2018-10-04 14:25:52,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-10-04 14:25:52,693 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2018-10-04 14:25:52,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-10-04 14:25:52,694 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:52,694 INFO L375 BasicCegarLoop]: trace histogram [80, 1, 1, 1] [2018-10-04 14:25:52,694 INFO L423 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:52,694 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:52,694 INFO L82 PathProgramCache]: Analyzing trace with hash -713416189, now seen corresponding path program 80 times [2018-10-04 14:25:52,694 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:52,694 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:52,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:52,695 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:25:52,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:52,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:55,304 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:55,305 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:55,305 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:25:55,312 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:25:55,426 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:25:55,426 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:55,435 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:56,085 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:56,105 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:56,105 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 82 [2018-10-04 14:25:56,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-10-04 14:25:56,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-10-04 14:25:56,106 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:56,106 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand 83 states. [2018-10-04 14:25:56,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:56,322 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-10-04 14:25:56,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-10-04 14:25:56,322 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 83 [2018-10-04 14:25:56,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:56,322 INFO L225 Difference]: With dead ends: 87 [2018-10-04 14:25:56,323 INFO L226 Difference]: Without dead ends: 85 [2018-10-04 14:25:56,323 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time 2.3s impTime 81 [2018-10-04 14:25:56,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-10-04 14:25:56,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-10-04 14:25:56,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-10-04 14:25:56,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2018-10-04 14:25:56,325 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 83 [2018-10-04 14:25:56,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:56,325 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2018-10-04 14:25:56,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-10-04 14:25:56,325 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2018-10-04 14:25:56,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-10-04 14:25:56,325 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:56,325 INFO L375 BasicCegarLoop]: trace histogram [81, 1, 1, 1] [2018-10-04 14:25:56,326 INFO L423 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:56,326 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:56,326 INFO L82 PathProgramCache]: Analyzing trace with hash -641063572, now seen corresponding path program 81 times [2018-10-04 14:25:56,326 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:56,326 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:56,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:56,327 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:56,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:56,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:25:58,470 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:58,471 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:25:58,471 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:25:58,477 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:25:58,684 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2018-10-04 14:25:58,685 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:25:58,691 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:25:58,885 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:25:58,905 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:25:58,906 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2018-10-04 14:25:58,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-10-04 14:25:58,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-10-04 14:25:58,907 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:25:58,907 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 84 states. [2018-10-04 14:25:59,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:25:59,076 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2018-10-04 14:25:59,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-10-04 14:25:59,076 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 84 [2018-10-04 14:25:59,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:25:59,077 INFO L225 Difference]: With dead ends: 88 [2018-10-04 14:25:59,077 INFO L226 Difference]: Without dead ends: 86 [2018-10-04 14:25:59,077 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.8s impTime 82 [2018-10-04 14:25:59,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-10-04 14:25:59,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-10-04 14:25:59,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-10-04 14:25:59,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2018-10-04 14:25:59,079 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 84 [2018-10-04 14:25:59,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:25:59,080 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2018-10-04 14:25:59,080 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-10-04 14:25:59,080 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2018-10-04 14:25:59,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-10-04 14:25:59,080 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:25:59,080 INFO L375 BasicCegarLoop]: trace histogram [82, 1, 1, 1] [2018-10-04 14:25:59,080 INFO L423 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:25:59,080 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:25:59,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1601867555, now seen corresponding path program 82 times [2018-10-04 14:25:59,081 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:25:59,081 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:25:59,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:59,081 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:25:59,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:25:59,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:26:01,788 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:01,788 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:26:01,788 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:26:01,797 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:26:01,914 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:26:01,914 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:26:01,922 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:26:02,255 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:02,277 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:26:02,277 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 84 [2018-10-04 14:26:02,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-10-04 14:26:02,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-10-04 14:26:02,278 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:26:02,278 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 85 states. [2018-10-04 14:26:02,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:26:02,780 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-10-04 14:26:02,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-10-04 14:26:02,780 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 85 [2018-10-04 14:26:02,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:26:02,781 INFO L225 Difference]: With dead ends: 89 [2018-10-04 14:26:02,781 INFO L226 Difference]: Without dead ends: 87 [2018-10-04 14:26:02,781 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.4s impTime 83 [2018-10-04 14:26:02,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-10-04 14:26:02,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-10-04 14:26:02,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-10-04 14:26:02,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-10-04 14:26:02,783 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 85 [2018-10-04 14:26:02,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:26:02,784 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-10-04 14:26:02,784 INFO L481 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-10-04 14:26:02,784 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-10-04 14:26:02,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-04 14:26:02,784 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:26:02,785 INFO L375 BasicCegarLoop]: trace histogram [83, 1, 1, 1] [2018-10-04 14:26:02,785 INFO L423 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:26:02,785 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:26:02,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1881711540, now seen corresponding path program 83 times [2018-10-04 14:26:02,785 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:26:02,785 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:26:02,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:02,786 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:26:02,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:02,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:26:05,963 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:05,963 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:26:05,963 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:26:05,971 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:26:06,182 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2018-10-04 14:26:06,183 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:26:06,193 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:26:06,381 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:06,402 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:26:06,402 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2018-10-04 14:26:06,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-10-04 14:26:06,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-10-04 14:26:06,403 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:26:06,404 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 86 states. [2018-10-04 14:26:06,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:26:06,627 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2018-10-04 14:26:06,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-10-04 14:26:06,627 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 86 [2018-10-04 14:26:06,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:26:06,628 INFO L225 Difference]: With dead ends: 90 [2018-10-04 14:26:06,628 INFO L226 Difference]: Without dead ends: 88 [2018-10-04 14:26:06,628 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s Time 2.9s impTime 84 [2018-10-04 14:26:06,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-10-04 14:26:06,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2018-10-04 14:26:06,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-10-04 14:26:06,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2018-10-04 14:26:06,630 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 86 [2018-10-04 14:26:06,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:26:06,630 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2018-10-04 14:26:06,630 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-10-04 14:26:06,630 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2018-10-04 14:26:06,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-10-04 14:26:06,631 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:26:06,631 INFO L375 BasicCegarLoop]: trace histogram [84, 1, 1, 1] [2018-10-04 14:26:06,631 INFO L423 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:26:06,631 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:26:06,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1796486211, now seen corresponding path program 84 times [2018-10-04 14:26:06,631 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:26:06,632 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:26:06,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:06,632 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:26:06,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:06,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:26:08,718 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:08,719 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:26:08,719 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:26:08,729 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:26:08,951 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-10-04 14:26:08,951 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:26:08,960 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:26:09,161 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:09,182 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:26:09,182 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 86 [2018-10-04 14:26:09,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-10-04 14:26:09,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-10-04 14:26:09,183 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:26:09,184 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand 87 states. [2018-10-04 14:26:09,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:26:09,358 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-10-04 14:26:09,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-10-04 14:26:09,358 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 87 [2018-10-04 14:26:09,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:26:09,359 INFO L225 Difference]: With dead ends: 91 [2018-10-04 14:26:09,359 INFO L226 Difference]: Without dead ends: 89 [2018-10-04 14:26:09,359 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.8s impTime 85 [2018-10-04 14:26:09,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-10-04 14:26:09,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-10-04 14:26:09,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-10-04 14:26:09,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-10-04 14:26:09,362 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 87 [2018-10-04 14:26:09,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:26:09,362 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-10-04 14:26:09,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-10-04 14:26:09,362 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-10-04 14:26:09,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-04 14:26:09,363 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:26:09,363 INFO L375 BasicCegarLoop]: trace histogram [85, 1, 1, 1] [2018-10-04 14:26:09,363 INFO L423 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:26:09,363 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:26:09,364 INFO L82 PathProgramCache]: Analyzing trace with hash -143500500, now seen corresponding path program 85 times [2018-10-04 14:26:09,364 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:26:09,364 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:26:09,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:09,364 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:26:09,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:09,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:26:11,455 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:11,455 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:26:11,455 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:26:11,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:26:11,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:26:11,585 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:26:12,434 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:12,454 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:26:12,454 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2018-10-04 14:26:12,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-04 14:26:12,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-04 14:26:12,456 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:26:12,456 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 88 states. [2018-10-04 14:26:12,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:26:12,632 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2018-10-04 14:26:12,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-10-04 14:26:12,632 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 88 [2018-10-04 14:26:12,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:26:12,633 INFO L225 Difference]: With dead ends: 92 [2018-10-04 14:26:12,633 INFO L226 Difference]: Without dead ends: 90 [2018-10-04 14:26:12,633 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 1.8s impTime 86 [2018-10-04 14:26:12,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-10-04 14:26:12,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2018-10-04 14:26:12,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-10-04 14:26:12,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2018-10-04 14:26:12,635 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 88 [2018-10-04 14:26:12,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:26:12,636 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2018-10-04 14:26:12,636 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-10-04 14:26:12,636 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2018-10-04 14:26:12,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-10-04 14:26:12,636 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:26:12,636 INFO L375 BasicCegarLoop]: trace histogram [86, 1, 1, 1] [2018-10-04 14:26:12,637 INFO L423 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:26:12,637 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:26:12,637 INFO L82 PathProgramCache]: Analyzing trace with hash -153546397, now seen corresponding path program 86 times [2018-10-04 14:26:12,637 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:26:12,637 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:26:12,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:12,637 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:26:12,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:12,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:26:15,018 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:15,019 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:26:15,019 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:26:15,025 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:26:15,142 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:26:15,142 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:26:15,151 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:26:15,346 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:15,367 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:26:15,367 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 88 [2018-10-04 14:26:15,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-10-04 14:26:15,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-10-04 14:26:15,368 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:26:15,368 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand 89 states. [2018-10-04 14:26:15,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:26:15,545 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-10-04 14:26:15,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-04 14:26:15,545 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 89 [2018-10-04 14:26:15,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:26:15,546 INFO L225 Difference]: With dead ends: 93 [2018-10-04 14:26:15,546 INFO L226 Difference]: Without dead ends: 91 [2018-10-04 14:26:15,546 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 2.1s impTime 87 [2018-10-04 14:26:15,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-04 14:26:15,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-10-04 14:26:15,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-10-04 14:26:15,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-10-04 14:26:15,548 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 89 [2018-10-04 14:26:15,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:26:15,548 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-10-04 14:26:15,548 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-10-04 14:26:15,548 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-10-04 14:26:15,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-04 14:26:15,549 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:26:15,549 INFO L375 BasicCegarLoop]: trace histogram [87, 1, 1, 1] [2018-10-04 14:26:15,549 INFO L423 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:26:15,549 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:26:15,549 INFO L82 PathProgramCache]: Analyzing trace with hash -464969204, now seen corresponding path program 87 times [2018-10-04 14:26:15,549 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:26:15,549 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:26:15,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:15,550 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:26:15,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:15,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:26:18,465 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:18,465 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:26:18,465 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:26:18,474 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:26:18,703 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 45 check-sat command(s) [2018-10-04 14:26:18,703 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:26:18,710 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:26:18,906 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:18,927 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:26:18,927 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2018-10-04 14:26:18,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-10-04 14:26:18,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-10-04 14:26:18,928 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:26:18,928 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 90 states. [2018-10-04 14:26:19,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:26:19,111 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2018-10-04 14:26:19,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-10-04 14:26:19,112 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 90 [2018-10-04 14:26:19,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:26:19,112 INFO L225 Difference]: With dead ends: 94 [2018-10-04 14:26:19,112 INFO L226 Difference]: Without dead ends: 92 [2018-10-04 14:26:19,113 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.6s impTime 88 [2018-10-04 14:26:19,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-10-04 14:26:19,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2018-10-04 14:26:19,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-10-04 14:26:19,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2018-10-04 14:26:19,115 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 90 [2018-10-04 14:26:19,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:26:19,115 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2018-10-04 14:26:19,115 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-10-04 14:26:19,116 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2018-10-04 14:26:19,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-10-04 14:26:19,116 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:26:19,116 INFO L375 BasicCegarLoop]: trace histogram [88, 1, 1, 1] [2018-10-04 14:26:19,117 INFO L423 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:26:19,117 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:26:19,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1529141629, now seen corresponding path program 88 times [2018-10-04 14:26:19,117 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:26:19,117 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:26:19,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:19,117 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:26:19,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:19,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:26:21,552 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:21,553 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:26:21,553 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:26:21,561 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:26:21,678 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:26:21,678 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:26:21,687 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:26:21,889 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:21,909 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:26:21,909 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 90 [2018-10-04 14:26:21,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-10-04 14:26:21,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-10-04 14:26:21,910 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:26:21,910 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand 91 states. [2018-10-04 14:26:22,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:26:22,078 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-10-04 14:26:22,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-10-04 14:26:22,078 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 91 [2018-10-04 14:26:22,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:26:22,079 INFO L225 Difference]: With dead ends: 95 [2018-10-04 14:26:22,079 INFO L226 Difference]: Without dead ends: 93 [2018-10-04 14:26:22,079 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 2.1s impTime 89 [2018-10-04 14:26:22,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-10-04 14:26:22,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-10-04 14:26:22,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-10-04 14:26:22,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-10-04 14:26:22,081 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 91 [2018-10-04 14:26:22,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:26:22,081 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-10-04 14:26:22,081 INFO L481 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-10-04 14:26:22,081 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-10-04 14:26:22,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-04 14:26:22,082 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:26:22,082 INFO L375 BasicCegarLoop]: trace histogram [89, 1, 1, 1] [2018-10-04 14:26:22,082 INFO L423 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:26:22,082 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:26:22,082 INFO L82 PathProgramCache]: Analyzing trace with hash -158748436, now seen corresponding path program 89 times [2018-10-04 14:26:22,082 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:26:22,082 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:26:22,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:22,083 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:26:22,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:22,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:26:24,589 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:24,590 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:26:24,590 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:26:24,596 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:26:24,837 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2018-10-04 14:26:24,837 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:26:24,849 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:26:25,064 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:25,085 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:26:25,085 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2018-10-04 14:26:25,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-10-04 14:26:25,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-10-04 14:26:25,086 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:26:25,086 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 92 states. [2018-10-04 14:26:25,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:26:25,269 INFO L93 Difference]: Finished difference Result 96 states and 96 transitions. [2018-10-04 14:26:25,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-10-04 14:26:25,269 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 92 [2018-10-04 14:26:25,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:26:25,270 INFO L225 Difference]: With dead ends: 96 [2018-10-04 14:26:25,270 INFO L226 Difference]: Without dead ends: 94 [2018-10-04 14:26:25,270 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.2s impTime 90 [2018-10-04 14:26:25,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-10-04 14:26:25,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2018-10-04 14:26:25,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-10-04 14:26:25,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2018-10-04 14:26:25,272 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 92 [2018-10-04 14:26:25,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:26:25,273 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2018-10-04 14:26:25,273 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-10-04 14:26:25,273 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2018-10-04 14:26:25,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-04 14:26:25,273 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:26:25,274 INFO L375 BasicCegarLoop]: trace histogram [90, 1, 1, 1] [2018-10-04 14:26:25,274 INFO L423 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:26:25,274 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:26:25,274 INFO L82 PathProgramCache]: Analyzing trace with hash -626232413, now seen corresponding path program 90 times [2018-10-04 14:26:25,274 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:26:25,274 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:26:25,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:25,275 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:26:25,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:25,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:26:27,342 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:27,342 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:26:27,342 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:26:27,349 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:26:27,592 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 46 check-sat command(s) [2018-10-04 14:26:27,592 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:26:27,603 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:26:27,932 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:27,954 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:26:27,954 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 92 [2018-10-04 14:26:27,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-10-04 14:26:27,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-10-04 14:26:27,955 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:26:27,955 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand 93 states. [2018-10-04 14:26:28,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:26:28,150 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-10-04 14:26:28,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-10-04 14:26:28,150 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 93 [2018-10-04 14:26:28,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:26:28,151 INFO L225 Difference]: With dead ends: 97 [2018-10-04 14:26:28,151 INFO L226 Difference]: Without dead ends: 95 [2018-10-04 14:26:28,151 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.7s impTime 91 [2018-10-04 14:26:28,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-10-04 14:26:28,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-10-04 14:26:28,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-10-04 14:26:28,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-10-04 14:26:28,154 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 93 [2018-10-04 14:26:28,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:26:28,154 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-10-04 14:26:28,154 INFO L481 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-10-04 14:26:28,154 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-10-04 14:26:28,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-10-04 14:26:28,155 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:26:28,155 INFO L375 BasicCegarLoop]: trace histogram [91, 1, 1, 1] [2018-10-04 14:26:28,155 INFO L423 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:26:28,155 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:26:28,155 INFO L82 PathProgramCache]: Analyzing trace with hash 2061633484, now seen corresponding path program 91 times [2018-10-04 14:26:28,156 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:26:28,156 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:26:28,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:28,156 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:26:28,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:28,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:26:31,877 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:31,878 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:26:31,878 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:26:31,886 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:26:32,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:26:32,019 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:26:32,225 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:32,245 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:26:32,246 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2018-10-04 14:26:32,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-10-04 14:26:32,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-10-04 14:26:32,247 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:26:32,247 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 94 states. [2018-10-04 14:26:32,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:26:32,510 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2018-10-04 14:26:32,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-04 14:26:32,511 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 94 [2018-10-04 14:26:32,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:26:32,511 INFO L225 Difference]: With dead ends: 98 [2018-10-04 14:26:32,511 INFO L226 Difference]: Without dead ends: 96 [2018-10-04 14:26:32,511 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7s Time 3.4s impTime 92 [2018-10-04 14:26:32,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-10-04 14:26:32,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-10-04 14:26:32,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-10-04 14:26:32,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2018-10-04 14:26:32,513 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 94 [2018-10-04 14:26:32,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:26:32,514 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2018-10-04 14:26:32,514 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-10-04 14:26:32,514 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2018-10-04 14:26:32,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-04 14:26:32,514 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:26:32,514 INFO L375 BasicCegarLoop]: trace histogram [92, 1, 1, 1] [2018-10-04 14:26:32,514 INFO L423 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:26:32,514 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:26:32,515 INFO L82 PathProgramCache]: Analyzing trace with hash -513869629, now seen corresponding path program 92 times [2018-10-04 14:26:32,515 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:26:32,515 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:26:32,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:32,516 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:26:32,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:32,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:26:35,568 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:35,568 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:26:35,568 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:26:35,575 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:26:35,709 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:26:35,709 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:26:35,718 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:26:35,940 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:35,960 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:26:35,961 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 94 [2018-10-04 14:26:35,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-10-04 14:26:35,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-10-04 14:26:35,962 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:26:35,962 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 95 states. [2018-10-04 14:26:36,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:26:36,167 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-10-04 14:26:36,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-10-04 14:26:36,168 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 95 [2018-10-04 14:26:36,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:26:36,168 INFO L225 Difference]: With dead ends: 99 [2018-10-04 14:26:36,168 INFO L226 Difference]: Without dead ends: 97 [2018-10-04 14:26:36,168 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time 2.7s impTime 93 [2018-10-04 14:26:36,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-10-04 14:26:36,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-10-04 14:26:36,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-10-04 14:26:36,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-10-04 14:26:36,170 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 95 [2018-10-04 14:26:36,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:26:36,171 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-10-04 14:26:36,171 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-10-04 14:26:36,171 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-10-04 14:26:36,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-04 14:26:36,171 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:26:36,171 INFO L375 BasicCegarLoop]: trace histogram [93, 1, 1, 1] [2018-10-04 14:26:36,171 INFO L423 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:26:36,171 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:26:36,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1249912492, now seen corresponding path program 93 times [2018-10-04 14:26:36,172 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:26:36,172 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:26:36,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:36,172 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:26:36,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:36,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:26:38,910 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:38,910 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:26:38,910 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:26:38,918 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:26:39,169 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2018-10-04 14:26:39,169 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:26:39,176 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:26:39,379 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:39,399 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:26:39,400 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2018-10-04 14:26:39,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-10-04 14:26:39,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-10-04 14:26:39,401 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:26:39,401 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 96 states. [2018-10-04 14:26:39,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:26:39,613 INFO L93 Difference]: Finished difference Result 100 states and 100 transitions. [2018-10-04 14:26:39,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-10-04 14:26:39,614 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 96 [2018-10-04 14:26:39,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:26:39,614 INFO L225 Difference]: With dead ends: 100 [2018-10-04 14:26:39,614 INFO L226 Difference]: Without dead ends: 98 [2018-10-04 14:26:39,614 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.4s impTime 94 [2018-10-04 14:26:39,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-10-04 14:26:39,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2018-10-04 14:26:39,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-10-04 14:26:39,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2018-10-04 14:26:39,617 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 96 [2018-10-04 14:26:39,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:26:39,617 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2018-10-04 14:26:39,617 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-10-04 14:26:39,617 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2018-10-04 14:26:39,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-10-04 14:26:39,618 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:26:39,618 INFO L375 BasicCegarLoop]: trace histogram [94, 1, 1, 1] [2018-10-04 14:26:39,618 INFO L423 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:26:39,618 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:26:39,618 INFO L82 PathProgramCache]: Analyzing trace with hash 92583395, now seen corresponding path program 94 times [2018-10-04 14:26:39,619 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:26:39,619 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:26:39,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:39,619 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:26:39,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:39,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:26:43,334 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:43,334 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:26:43,334 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:26:43,342 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:26:43,478 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:26:43,478 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:26:43,487 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:26:43,741 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:43,761 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:26:43,762 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 96 [2018-10-04 14:26:43,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-10-04 14:26:43,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-10-04 14:26:43,763 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:26:43,763 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand 97 states. [2018-10-04 14:26:43,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:26:43,984 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-10-04 14:26:43,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-10-04 14:26:43,984 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 97 [2018-10-04 14:26:43,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:26:43,985 INFO L225 Difference]: With dead ends: 101 [2018-10-04 14:26:43,985 INFO L226 Difference]: Without dead ends: 99 [2018-10-04 14:26:43,985 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8s Time 3.4s impTime 95 [2018-10-04 14:26:43,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-10-04 14:26:43,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-10-04 14:26:43,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-10-04 14:26:43,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-10-04 14:26:43,987 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 97 [2018-10-04 14:26:43,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:26:43,987 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-10-04 14:26:43,988 INFO L481 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-10-04 14:26:43,988 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-10-04 14:26:43,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-04 14:26:43,988 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:26:43,989 INFO L375 BasicCegarLoop]: trace histogram [95, 1, 1, 1] [2018-10-04 14:26:43,989 INFO L423 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:26:43,989 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:26:43,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1424880244, now seen corresponding path program 95 times [2018-10-04 14:26:43,989 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:26:43,989 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:26:43,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:43,990 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:26:43,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:44,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:26:47,174 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:47,175 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:26:47,175 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:26:47,183 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:26:47,437 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2018-10-04 14:26:47,437 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:26:47,450 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:26:47,672 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:47,693 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:26:47,693 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2018-10-04 14:26:47,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-10-04 14:26:47,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-10-04 14:26:47,694 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:26:47,694 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 98 states. [2018-10-04 14:26:47,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:26:47,945 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2018-10-04 14:26:47,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-10-04 14:26:47,945 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 98 [2018-10-04 14:26:47,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:26:47,946 INFO L225 Difference]: With dead ends: 102 [2018-10-04 14:26:47,946 INFO L226 Difference]: Without dead ends: 100 [2018-10-04 14:26:47,946 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s Time 2.8s impTime 96 [2018-10-04 14:26:47,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-10-04 14:26:47,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2018-10-04 14:26:47,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-10-04 14:26:47,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2018-10-04 14:26:47,948 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 98 [2018-10-04 14:26:47,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:26:47,948 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2018-10-04 14:26:47,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-10-04 14:26:47,948 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2018-10-04 14:26:47,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-10-04 14:26:47,949 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:26:47,949 INFO L375 BasicCegarLoop]: trace histogram [96, 1, 1, 1] [2018-10-04 14:26:47,949 INFO L423 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:26:47,949 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:26:47,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1221612797, now seen corresponding path program 96 times [2018-10-04 14:26:47,949 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:26:47,949 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:26:47,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:47,950 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:26:47,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:47,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:26:50,631 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:50,631 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:26:50,632 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:26:50,639 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:26:50,900 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-10-04 14:26:50,900 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:26:50,911 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:26:51,129 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:51,149 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:26:51,149 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 98 [2018-10-04 14:26:51,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-10-04 14:26:51,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-10-04 14:26:51,151 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:26:51,151 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand 99 states. [2018-10-04 14:26:51,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:26:51,343 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-10-04 14:26:51,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-10-04 14:26:51,343 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 99 [2018-10-04 14:26:51,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:26:51,343 INFO L225 Difference]: With dead ends: 103 [2018-10-04 14:26:51,343 INFO L226 Difference]: Without dead ends: 101 [2018-10-04 14:26:51,344 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.3s impTime 97 [2018-10-04 14:26:51,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-10-04 14:26:51,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-10-04 14:26:51,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-10-04 14:26:51,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2018-10-04 14:26:51,348 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 99 [2018-10-04 14:26:51,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:26:51,348 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2018-10-04 14:26:51,348 INFO L481 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-10-04 14:26:51,348 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2018-10-04 14:26:51,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-04 14:26:51,349 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:26:51,349 INFO L375 BasicCegarLoop]: trace histogram [97, 1, 1, 1] [2018-10-04 14:26:51,349 INFO L423 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:26:51,349 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:26:51,349 INFO L82 PathProgramCache]: Analyzing trace with hash 784710764, now seen corresponding path program 97 times [2018-10-04 14:26:51,349 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:26:51,349 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:26:51,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:51,350 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:26:51,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:51,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:26:55,141 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:55,141 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:26:55,141 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:26:55,148 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:26:55,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:26:55,291 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:26:55,514 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:26:55,535 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:26:55,535 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2018-10-04 14:26:55,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-10-04 14:26:55,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-10-04 14:26:55,537 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:26:55,537 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 100 states. [2018-10-04 14:26:55,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:26:55,755 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2018-10-04 14:26:55,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-10-04 14:26:55,755 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 100 [2018-10-04 14:26:55,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:26:55,756 INFO L225 Difference]: With dead ends: 104 [2018-10-04 14:26:55,756 INFO L226 Difference]: Without dead ends: 102 [2018-10-04 14:26:55,756 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8s Time 3.5s impTime 98 [2018-10-04 14:26:55,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-10-04 14:26:55,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2018-10-04 14:26:55,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-10-04 14:26:55,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2018-10-04 14:26:55,759 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 100 [2018-10-04 14:26:55,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:26:55,759 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2018-10-04 14:26:55,759 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-10-04 14:26:55,759 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2018-10-04 14:26:55,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-10-04 14:26:55,759 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:26:55,759 INFO L375 BasicCegarLoop]: trace histogram [98, 1, 1, 1] [2018-10-04 14:26:55,760 INFO L423 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:26:55,760 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:26:55,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1443768285, now seen corresponding path program 98 times [2018-10-04 14:26:55,760 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:26:55,760 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:26:55,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:55,760 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:26:55,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:26:55,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:27:00,416 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:27:00,416 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:27:00,416 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:27:00,423 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:27:00,579 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:27:00,579 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:27:00,588 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:27:00,811 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:27:00,831 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:27:00,831 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 100 [2018-10-04 14:27:00,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-10-04 14:27:00,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-10-04 14:27:00,832 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:27:00,833 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 101 states. [2018-10-04 14:27:01,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:27:01,129 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-10-04 14:27:01,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-10-04 14:27:01,129 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 101 [2018-10-04 14:27:01,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:27:01,130 INFO L225 Difference]: With dead ends: 105 [2018-10-04 14:27:01,130 INFO L226 Difference]: Without dead ends: 103 [2018-10-04 14:27:01,130 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7s Time 4.3s impTime 99 [2018-10-04 14:27:01,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-10-04 14:27:01,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-10-04 14:27:01,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-10-04 14:27:01,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-10-04 14:27:01,133 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 101 [2018-10-04 14:27:01,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:27:01,133 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-10-04 14:27:01,133 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-10-04 14:27:01,133 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-10-04 14:27:01,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-04 14:27:01,134 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:27:01,134 INFO L375 BasicCegarLoop]: trace histogram [99, 1, 1, 1] [2018-10-04 14:27:01,134 INFO L423 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:27:01,134 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:27:01,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1807142068, now seen corresponding path program 99 times [2018-10-04 14:27:01,134 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:27:01,134 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:27:01,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:27:01,135 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:27:01,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:27:01,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:27:05,878 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:27:05,879 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:27:05,879 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:27:05,887 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:27:06,182 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 51 check-sat command(s) [2018-10-04 14:27:06,183 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:27:06,191 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:27:06,434 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:27:06,455 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:27:06,455 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2018-10-04 14:27:06,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-10-04 14:27:06,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-10-04 14:27:06,456 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:27:06,457 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 102 states. [2018-10-04 14:27:06,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:27:06,786 INFO L93 Difference]: Finished difference Result 106 states and 106 transitions. [2018-10-04 14:27:06,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-10-04 14:27:06,787 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 102 [2018-10-04 14:27:06,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:27:06,787 INFO L225 Difference]: With dead ends: 106 [2018-10-04 14:27:06,787 INFO L226 Difference]: Without dead ends: 104 [2018-10-04 14:27:06,788 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7s Time 4.4s impTime 100 [2018-10-04 14:27:06,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-10-04 14:27:06,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2018-10-04 14:27:06,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-10-04 14:27:06,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2018-10-04 14:27:06,790 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 102 [2018-10-04 14:27:06,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:27:06,790 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2018-10-04 14:27:06,791 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-10-04 14:27:06,791 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2018-10-04 14:27:06,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-10-04 14:27:06,791 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:27:06,791 INFO L375 BasicCegarLoop]: trace histogram [100, 1, 1, 1] [2018-10-04 14:27:06,791 INFO L423 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:27:06,792 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:27:06,792 INFO L82 PathProgramCache]: Analyzing trace with hash -186827453, now seen corresponding path program 100 times [2018-10-04 14:27:06,792 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:27:06,792 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:27:06,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:27:06,793 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:27:06,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:27:06,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:27:11,509 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:27:11,509 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:27:11,509 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:27:11,516 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:27:11,654 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:27:11,654 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:27:11,663 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:27:11,892 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:27:11,913 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:27:11,913 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 102 [2018-10-04 14:27:11,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-10-04 14:27:11,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-10-04 14:27:11,915 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:27:11,915 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand 103 states. [2018-10-04 14:27:12,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:27:12,220 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-10-04 14:27:12,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-10-04 14:27:12,220 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 103 [2018-10-04 14:27:12,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:27:12,221 INFO L225 Difference]: With dead ends: 107 [2018-10-04 14:27:12,221 INFO L226 Difference]: Without dead ends: 105 [2018-10-04 14:27:12,221 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7s Time 4.4s impTime 101 [2018-10-04 14:27:12,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-10-04 14:27:12,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-10-04 14:27:12,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-10-04 14:27:12,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-10-04 14:27:12,224 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 103 [2018-10-04 14:27:12,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:27:12,225 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-10-04 14:27:12,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-10-04 14:27:12,225 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-10-04 14:27:12,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-04 14:27:12,225 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:27:12,226 INFO L375 BasicCegarLoop]: trace histogram [101, 1, 1, 1] [2018-10-04 14:27:12,226 INFO L423 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:27:12,226 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:27:12,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1496681940, now seen corresponding path program 101 times [2018-10-04 14:27:12,226 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:27:12,226 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:27:12,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:27:12,227 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:27:12,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:27:12,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:27:17,260 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:27:17,260 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:27:17,260 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:27:17,267 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:27:17,549 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 52 check-sat command(s) [2018-10-04 14:27:17,549 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:27:17,563 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:27:17,841 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:27:17,879 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:27:17,879 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 103 [2018-10-04 14:27:17,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-10-04 14:27:17,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-10-04 14:27:17,880 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:27:17,880 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 104 states. [2018-10-04 14:27:18,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:27:18,195 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2018-10-04 14:27:18,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-10-04 14:27:18,195 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 104 [2018-10-04 14:27:18,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:27:18,196 INFO L225 Difference]: With dead ends: 108 [2018-10-04 14:27:18,196 INFO L226 Difference]: Without dead ends: 106 [2018-10-04 14:27:18,196 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.1s Time 4.7s impTime 102 [2018-10-04 14:27:18,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-10-04 14:27:18,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-10-04 14:27:18,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-10-04 14:27:18,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2018-10-04 14:27:18,199 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 104 [2018-10-04 14:27:18,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:27:18,200 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2018-10-04 14:27:18,200 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-10-04 14:27:18,200 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2018-10-04 14:27:18,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-10-04 14:27:18,200 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:27:18,200 INFO L375 BasicCegarLoop]: trace histogram [102, 1, 1, 1] [2018-10-04 14:27:18,201 INFO L423 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:27:18,201 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:27:18,201 INFO L82 PathProgramCache]: Analyzing trace with hash 847501923, now seen corresponding path program 102 times [2018-10-04 14:27:18,201 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:27:18,201 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:27:18,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:27:18,202 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:27:18,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:27:18,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:27:23,050 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:27:23,050 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:27:23,050 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:27:23,057 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:27:23,352 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) [2018-10-04 14:27:23,352 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:27:23,364 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:27:23,657 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:27:23,678 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:27:23,679 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 104 [2018-10-04 14:27:23,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-10-04 14:27:23,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-10-04 14:27:23,680 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:27:23,680 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 105 states. [2018-10-04 14:27:24,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:27:24,060 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-10-04 14:27:24,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-10-04 14:27:24,061 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 105 [2018-10-04 14:27:24,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:27:24,061 INFO L225 Difference]: With dead ends: 109 [2018-10-04 14:27:24,061 INFO L226 Difference]: Without dead ends: 107 [2018-10-04 14:27:24,061 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9s Time 4.5s impTime 103 [2018-10-04 14:27:24,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-10-04 14:27:24,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-10-04 14:27:24,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-10-04 14:27:24,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-10-04 14:27:24,064 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 105 [2018-10-04 14:27:24,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:27:24,064 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-10-04 14:27:24,064 INFO L481 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-10-04 14:27:24,064 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-10-04 14:27:24,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-04 14:27:24,065 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:27:24,065 INFO L375 BasicCegarLoop]: trace histogram [103, 1, 1, 1] [2018-10-04 14:27:24,065 INFO L423 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:27:24,065 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:27:24,065 INFO L82 PathProgramCache]: Analyzing trace with hash 502757644, now seen corresponding path program 103 times [2018-10-04 14:27:24,066 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:27:24,066 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:27:24,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:27:24,066 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:27:24,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:27:24,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:27:27,066 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:27:27,066 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:27:27,066 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:27:27,073 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:27:27,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:27:27,229 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:27:27,654 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:27:27,675 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:27:27,675 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 105 [2018-10-04 14:27:27,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-10-04 14:27:27,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-10-04 14:27:27,676 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:27:27,676 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 106 states. [2018-10-04 14:27:27,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:27:27,889 INFO L93 Difference]: Finished difference Result 110 states and 110 transitions. [2018-10-04 14:27:27,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-10-04 14:27:27,890 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 106 [2018-10-04 14:27:27,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:27:27,890 INFO L225 Difference]: With dead ends: 110 [2018-10-04 14:27:27,890 INFO L226 Difference]: Without dead ends: 108 [2018-10-04 14:27:27,890 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time 2.6s impTime 104 [2018-10-04 14:27:27,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-10-04 14:27:27,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2018-10-04 14:27:27,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-10-04 14:27:27,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 108 transitions. [2018-10-04 14:27:27,893 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 108 transitions. Word has length 106 [2018-10-04 14:27:27,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:27:27,893 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 108 transitions. [2018-10-04 14:27:27,893 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-10-04 14:27:27,893 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 108 transitions. [2018-10-04 14:27:27,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-10-04 14:27:27,894 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:27:27,894 INFO L375 BasicCegarLoop]: trace histogram [104, 1, 1, 1] [2018-10-04 14:27:27,894 INFO L423 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:27:27,894 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:27:27,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1594380413, now seen corresponding path program 104 times [2018-10-04 14:27:27,895 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:27:27,895 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:27:27,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:27:27,895 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:27:27,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:27:27,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:27:30,678 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:27:30,679 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:27:30,679 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:27:30,686 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:27:30,835 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:27:30,835 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:27:30,844 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:27:31,101 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:27:31,121 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:27:31,122 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 106 [2018-10-04 14:27:31,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-10-04 14:27:31,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-10-04 14:27:31,123 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:27:31,123 INFO L87 Difference]: Start difference. First operand 108 states and 108 transitions. Second operand 107 states. [2018-10-04 14:27:31,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:27:31,357 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-10-04 14:27:31,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-10-04 14:27:31,357 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 107 [2018-10-04 14:27:31,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:27:31,358 INFO L225 Difference]: With dead ends: 111 [2018-10-04 14:27:31,358 INFO L226 Difference]: Without dead ends: 109 [2018-10-04 14:27:31,358 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 2.4s impTime 105 [2018-10-04 14:27:31,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-10-04 14:27:31,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-10-04 14:27:31,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-10-04 14:27:31,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-10-04 14:27:31,361 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 107 [2018-10-04 14:27:31,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:27:31,361 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-10-04 14:27:31,361 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-10-04 14:27:31,361 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-10-04 14:27:31,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-04 14:27:31,362 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:27:31,362 INFO L375 BasicCegarLoop]: trace histogram [105, 1, 1, 1] [2018-10-04 14:27:31,363 INFO L423 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:27:31,363 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:27:31,363 INFO L82 PathProgramCache]: Analyzing trace with hash 2113816556, now seen corresponding path program 105 times [2018-10-04 14:27:31,363 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:27:31,363 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:27:31,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:27:31,364 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:27:31,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:27:31,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:27:37,032 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:27:37,033 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:27:37,033 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:27:37,042 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:27:37,355 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2018-10-04 14:27:37,355 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:27:37,365 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:27:37,610 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:27:37,631 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:27:37,631 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 107 [2018-10-04 14:27:37,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-10-04 14:27:37,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-10-04 14:27:37,632 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:27:37,632 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 108 states. [2018-10-04 14:27:37,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:27:37,994 INFO L93 Difference]: Finished difference Result 112 states and 112 transitions. [2018-10-04 14:27:37,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-10-04 14:27:37,995 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 108 [2018-10-04 14:27:37,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:27:37,995 INFO L225 Difference]: With dead ends: 112 [2018-10-04 14:27:37,995 INFO L226 Difference]: Without dead ends: 110 [2018-10-04 14:27:37,995 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.7s Time 5.3s impTime 106 [2018-10-04 14:27:37,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-10-04 14:27:37,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2018-10-04 14:27:37,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-10-04 14:27:37,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions. [2018-10-04 14:27:37,998 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 108 [2018-10-04 14:27:37,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:27:37,998 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions. [2018-10-04 14:27:37,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-10-04 14:27:37,998 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions. [2018-10-04 14:27:37,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-10-04 14:27:37,999 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:27:37,999 INFO L375 BasicCegarLoop]: trace histogram [106, 1, 1, 1] [2018-10-04 14:27:37,999 INFO L423 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:27:37,999 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:27:38,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1103805603, now seen corresponding path program 106 times [2018-10-04 14:27:38,000 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:27:38,000 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:27:38,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:27:38,000 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:27:38,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:27:38,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:27:41,740 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 0 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:27:41,740 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:27:41,740 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:27:41,747 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Received shutdown request... [2018-10-04 14:27:41,910 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:27:41,910 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:27:41,919 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:27:41,924 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-04 14:27:42,125 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:27:42,126 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-04 14:27:42,131 WARN L205 ceAbstractionStarter]: Timeout [2018-10-04 14:27:42,132 INFO L202 PluginConnector]: Adding new model functions1.i_3.bplTransformedIcfg_BEv2_8.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.10 02:27:42 BoogieIcfgContainer [2018-10-04 14:27:42,132 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-04 14:27:42,133 INFO L168 Benchmark]: Toolchain (without parser) took 235415.68 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -93.8 MB). Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 96.4 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2018-10-04 14:27:42,134 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. [2018-10-04 14:27:42,135 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.32 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-04 14:27:42,135 INFO L168 Benchmark]: Boogie Preprocessor took 22.80 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-04 14:27:42,136 INFO L168 Benchmark]: RCFGBuilder took 283.24 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-04 14:27:42,137 INFO L168 Benchmark]: TraceAbstraction took 235066.16 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -93.8 MB). Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 75.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-04 14:27:42,140 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 39.32 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 22.80 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 283.24 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 235066.16 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -93.8 MB). Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 75.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 42]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 42). Cancelled while BasicCegarLoop was analyzing trace of length 110 with TraceHistMax 106, 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, 6 locations, 1 error locations. TIMEOUT Result, 234.9s OverallTime, 107 OverallIterations, 106 TraceHistogramMax, 17.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 318 SDtfs, 0 SDslu, 4075 SDs, 0 SdLazy, 9852 SolverSat, 152 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11552 GetRequests, 5881 SyntacticMatches, 0 SemanticMatches, 5671 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 186.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110occurred in iteration=106, 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: 0.2s AutomataMinimizationTime, 106 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.5s SsaConstructionTime, 11.4s SatisfiabilityAnalysisTime, 195.4s InterpolantComputationTime, 11763 NumberOfCodeBlocks, 11763 NumberOfCodeBlocksAsserted, 1659 NumberOfCheckSat, 11552 ConstructedInterpolants, 0 QuantifiedInterpolants, 2461418 SizeOfPredicates, 16800 NumberOfNonLiveVariables, 57330 ConjunctsInSsa, 22470 ConjunctsInUnsatCore, 211 InterpolantComputations, 1 PerfectInterpolantSequences, 0/396970 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/functions1.i_3.bplTransformedIcfg_BEv2_8.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-04_14-27-42-149.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/functions1.i_3.bplTransformedIcfg_BEv2_8.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-04_14-27-42-149.csv Completed graceful shutdown